WO2015185009A1 - 交通信息控制、获取方法，交通信息控制、接收装置以及交通信息指示系统 - Google Patents

交通信息控制、获取方法，交通信息控制、接收装置以及交通信息指示系统 Download PDF

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Publication number
WO2015185009A1
WO2015185009A1 PCT/CN2015/080829 CN2015080829W WO2015185009A1 WO 2015185009 A1 WO2015185009 A1 WO 2015185009A1 CN 2015080829 W CN2015080829 W CN 2015080829W WO 2015185009 A1 WO2015185009 A1 WO 2015185009A1
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Prior art keywords
traffic information
information
traffic
intersection
specific
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PCT/CN2015/080829
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English (en)
French (fr)
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郝明学
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郝明学
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits

Definitions

  • Embodiments of the present invention relate to an intelligent transportation system, and further, to a system and method for simultaneously displaying the status of a traffic light at a front intersection.
  • Smog is a general term for fog and sputum.
  • the three components of sulphur dioxide, nitrogen oxides and respirable particulate matter are the main components of smog.
  • the first two are gaseous pollutants.
  • the last granule is the culprits of aggravating smog weather pollution.
  • the culprit are combined with fog to make the sky instantly gray.
  • the pollutant particles having a diameter of 2.5 ⁇ m or less are both a pollutant and a carrier of toxic substances such as heavy metals and polycyclic aromatic hydrocarbons. After being inhaled into the alveoli, it either stays in the alveoli or enters the blood system, which is a huge hazard. This is also the cause of cancer caused by air pollution.
  • strontium is mainly the result of the interaction of a large number of particles suspended in the air and meteorological conditions.
  • the increase of static wind phenomenon is not conducive to the diffusion and dilution of aerosols in the atmosphere, and it is easy to accumulate in the urban and suburban areas; the second is the inversion in the vertical direction.
  • the inversion layer is like a pot cover covering the city. This high temperature is higher than the low air temperature. The vertical movement of the air in the low atmosphere is limited.
  • the suspended particles in the air are difficult to float to the sky and are blocked. Low altitude and near the ground.
  • the third is the increase in suspended particulate matter in the air. With the growth of urban population and industrial development, motor vehicles remarkablyd, resulting in a large increase in pollutant emissions and suspended solids, directly leading to reduced visibility.
  • the embodiment of the invention is directed to the first direction.
  • SCATS is an intelligent traffic control system developed by the Australian New South Wales Road Traffic Agency (RTA) and is one of the few advanced urban signal traffic control systems in the world. Some cities in China have adopted the system, such as Shanghai, Hong Kong, Shenyang, Suzhou and Hangzhou. Whether it is the existing intelligent traffic control system or the existing single-channel signal control system, there are two shortcomings: First, the driver can not obtain the status information of the traffic light at the front intersection in real time, and use this information to assist the driving decision; Drivers waiting for the red light can't prepare in time to start the vehicle at the same time, quickly pass the intersection, and effectively use the green light time to improve the traffic efficiency.
  • RTA Australian New South Wales Road Traffic Agency
  • One of the objectives of the embodiments of the present invention is to overcome the deficiencies of the prior art and provide a system for simultaneously displaying the state of traffic lights at the front intersections, so that the driver can understand and utilize the state information of the traffic lights at the front intersections to assist the driving decision and improve the whole.
  • the traffic efficiency of the urban road network improves the average traffic speed of urban motor vehicles and achieves the goal of reducing pollutant emissions.
  • a second object of the embodiments of the present invention is to provide a method for simultaneously displaying the status of a traffic light at a front intersection.
  • the vehicle locates and orients itself through the satellite positioning navigation module, and retrieves the code of the front intersection.
  • the vehicle terminal system sends a request to the intelligent traffic signal system or the system server at the front intersection to obtain the time setting information and the current state information of the traffic signal at the front intersection.
  • the vehicle terminal system decodes the received traffic signal information, displays the state of the traffic signal in the driving direction of the vehicle on the screen, and reminds the driver to predict the state of the traffic light at the front intersection in advance by means of numbers, characters, graphics or sounds. Help the driver make driving decisions.
  • the vehicle terminal system reminds all drivers to start the vehicle at the same time and reduce the waiting time of the vehicle at the intersection. Thereby improving the traffic efficiency of the entire urban road network, increasing the average traffic speed of urban motor vehicles, and achieving the goal of reducing pollutant emissions.
  • a traffic information control method is provided, the method being applied to And the traffic information control device is connected to the at least one traffic information receiving device via the network; the control method comprises: receiving the request of the traffic information receiving device for the real-time traffic information; and transmitting the real-time traffic information to the receiving device according to the request.
  • the request includes: specific geographic location information corresponding to the real-time traffic information
  • the step of transmitting the real-time traffic information to the receiving device according to the request includes: determining real-time traffic information requested by the traffic information receiving device according to the specific geographic location information; acquiring the requested The real-time traffic information corresponding to the specific geographical location information; the real-time traffic information is sent to the traffic information receiving device.
  • the specific geographic location information includes: information of a specific intersection node and information of a specific traffic indication device in the specific intersection node; before the step of determining the traffic information requested by the traffic information receiving device according to the specific geographic location information, the method further includes: Receiving a joining node request of the traffic information receiving device, the joining node request includes specific intersection node information; acquiring a specific intersection node set requested by the traffic information receiving device according to the joining node request; adding the traffic information receiving device to the specific intersection node set.
  • the method before receiving the joining node request of the traffic information receiving device, before the step of including the specific intersection node information in the joining node request, the method further includes: determining, according to the specific geographic location information, a predetermined intersection node that the traffic information receiving device may join; The node transmits to the traffic information receiving device.
  • the method further includes: acquiring at least one of quantity, location, or direction information of the traffic information receiving device in the set of specific intersection nodes; and performing traffic control on the specific intersection node according to the at least one information.
  • the step of determining the real-time traffic information requested by the traffic information receiving device according to the specific geographic location information includes: determining whether the traffic information receiving device is added to the specific intersection node set; and determining that the traffic information receiving device has joined the specific intersection node set
  • the requested real-time traffic information is determined based on the specific intersection node information and the information of the specific traffic indication device in the particular intersection node.
  • the method further includes: receiving an exit node request of the traffic information receiving device to exit the specific intersection node set; and removing the traffic information receiving device from the specific intersection node set according to the exit node request.
  • the traffic information control device is connected to a plurality of traffic information sub-control units, each of which communicates
  • the information control unit corresponds to a traffic intersection node;
  • the specific geographical location information includes: specific intersection node information and information of a specific traffic indication device in the specific intersection node; wherein, according to the specific geographical location information, determining the real-time requested by the traffic information receiving device
  • the traffic information step includes: sending, according to the specific intersection node information, a traffic information sub-control unit corresponding to the specific intersection node to instruct the return to the real-time traffic information corresponding to the specific intersection; and receiving the corresponding information sent by the traffic information sub-control unit
  • the intersection traffic information of the specific intersection node; the intersection traffic information is forwarded to the traffic information receiving device, wherein the intersection traffic information includes: current time setting information and status information of the specific traffic indication device in the current traffic intersection node.
  • the traffic information control device includes a plurality of traffic information sub-control units, each traffic information sub-control unit corresponding to a traffic intersection node; the request includes: specific traffic intersection node information corresponding to the real-time traffic information, wherein the real-time traffic is requested according to the request.
  • the transmitting of the information to the receiving device comprises: synchronously transmitting the real-time traffic information of the specific intersection node to the traffic information sub-control unit and the traffic information receiving device according to the request.
  • a method for acquiring traffic information is provided, the method being applied to a traffic information receiving device, wherein the traffic information receiving device is connected to the traffic information control device via a network; and the control method comprises: transmitting the real-time information to the traffic information control device The request for traffic information; displaying the real-time traffic information returned by the traffic information control device.
  • the step of transmitting a request for acquiring real-time traffic information to the traffic information control device includes: acquiring first location information and first direction information of the first location information; determining the first location information and the first location information according to the first location information and the first direction information Specific geographical location information corresponding to one direction information; the specific geographical location information is transmitted to the traffic information control device.
  • the specific geographic location information includes: information of the specific intersection node; the method further includes: sending a joining node request to the traffic control device according to the specific geographic location information, to apply to join the specific intersection node set corresponding to the specific geographic location; or According to the joining intersection indication of the traffic information control device, applying to join the specific intersection node set corresponding to the joining intersection indication; when receiving the instruction that the traffic control device accepts the joining to the specific intersection node, adding to the specific intersection node set.
  • the method further includes: saving the first location information of the traffic information receiving device corresponding to the real-time traffic information returned by the traffic information control device; acquiring the current second location information and the second direction information again; determining the second location Whether the information is the same as the previous first location information; when not different, sending an exit node request to the traffic information control device to apply for withdrawal from the specific intersection A set of specific traffic intersection nodes corresponding to the access node.
  • the traffic information control device is connected to a plurality of traffic information sub-control units, each traffic information sub-control unit corresponding to a traffic intersection node;
  • the specific geographic location information includes: specific intersection node information and a specific traffic indication device in the specific intersection node
  • a traffic information control apparatus being connected to at least one traffic information receiving apparatus via a network; the control apparatus comprising: a receiving unit configured to receive the traffic information receiving apparatus in real time a request for traffic information; a transmitting unit configured to transmit real-time traffic information to the receiving device according to the request.
  • the request includes: specific geographic location information corresponding to the real-time traffic information
  • the sending unit includes: a traffic information determining unit configured to determine real-time traffic information requested by the traffic information receiving device according to the specific geographic location information; and the traffic information acquiring unit, Configuring real-time traffic information for acquiring the requested specific geographic location information; the traffic information sending unit is configured to transmit the real-time traffic information to the traffic information receiving device.
  • the traffic information control device is connected to a plurality of traffic information sub-control units, each traffic information sub-control unit corresponding to a traffic intersection node;
  • the specific geographic location information includes: specific intersection node information and a specific traffic indication device in the specific intersection node
  • the traffic information determining unit includes: a return traffic information command sending unit configured to send an instruction to the traffic information sub-control unit corresponding to the specific intersection node according to the specific intersection node information to indicate that it returns to the intersection corresponding to the intersection Real-time traffic information; a traffic information receiving unit configured to receive intersection traffic information corresponding to a specific intersection node sent back by the traffic information sub-control unit; the traffic information forwarding unit configured to forward the intersection traffic information to the traffic information reception The device, wherein the intersection traffic information comprises: current time setting information and status information of a specific traffic indication device in the current traffic intersection node.
  • a traffic information receiving apparatus is provided.
  • the traffic information receiving apparatus is connected to a traffic information control apparatus via a network, and the receiving apparatus includes: a request sending unit, A request for transmitting real-time traffic information to the traffic information control device is provided; the display unit is configured to display the real-time traffic information returned by the traffic information control device.
  • the request sending unit includes: a first location direction acquiring unit configured to acquire first location information and first direction information of the first location information; and a specific geographic location information determining unit configured to use the first location information and the first The direction information determines specific geographic location information corresponding to the first location information and the first direction information; the specific geographic location information transmitting unit is configured to transmit the specific geographical location information to the traffic information control device.
  • a traffic information indicating system including: a traffic information control device and a traffic information receiving device is provided.
  • a system for simultaneously displaying the status of a traffic light at a front intersection including:
  • the intelligent traffic signal system (1) the intelligent traffic signal system (1) is installed at each intersection, and sends the “time setting information and current state information” of the traffic light of the intersection to the “system server” or receives Command from the "system server”.
  • the application for receiving the vehicle traveling to the intersection adds the intelligent vehicle terminal system carried by the vehicle to the intersection node, and sends the “time setting information and current state information” of the intersection traffic signal to the forward intersection. Vehicles.
  • the application for receiving the vehicle far from the intersection stops the transmission of the "time setting information and current status information" of the traffic signal, and at the same time removes the intelligent vehicle terminal system carried by the vehicle from the intersection node.
  • the intelligent vehicle terminal system (2) locates and orients the vehicle itself through a satellite positioning system or a satellite positioning navigation module, and retrieves the "code of the front intersection” and the "code of the corresponding traffic light group at the road ahead".
  • the application is sent to the intelligent traffic signal system (1) or "system server” of the front intersection.
  • Decoding the received information according to the retrieved "code of the corresponding traffic light group at the road ahead of the road being traveled", running the traffic light subroutine to display the status of "the corresponding traffic light at the front intersection" on the screen.
  • the driver is reminded by numbers, graphics or sounds to predict the state of the traffic lights at the intersection ahead of time, and assist the driver in making driving decisions.
  • the intelligent traffic signal system (1) or the "system server” is applied to stop the "time setting information and current status information" of the traffic light passing through the intersection.
  • Intelligent traffic signal system The communication mode between the system (1) and the intelligent vehicle terminal system (2) is one of wireless local area network communication, cellular mobile communication network communication, and a dedicated network.
  • a method for simultaneously displaying the status of a traffic light at a front intersection comprising:
  • Step 1 Encode all the intersections of a city road network; code each road that is concentrated at each intersection, and associate the codes of the roads with the corresponding traffic signal groups in front of each road.
  • Step 2 The intelligent traffic signal system at each intersection communicates with the system server. Or an intelligent traffic signal system at an intersection uploads "time setting information and current status information" to the system server. Or the system server transmits the "time setting information and current status information" of an intersection to the intelligent traffic signal system of the intersection.
  • Step 3 The intelligent vehicle-mounted terminal system on each motor vehicle retrieves the “code of the front intersection” and the “code of the traffic light group corresponding to the road at the front intersection” according to its own positioning and orientation information.
  • Step 4 Upload the retrieved "code of the front intersection” to the system server, and request the "time setting information and current status information" of the front intersection.
  • Step 5 After receiving the “time setting information and the current state information” of the front intersection returned by the system server, the operation is performed according to the “code of the traffic light group corresponding to the road being driven at the front intersection” retrieved in step 3
  • the traffic light subroutine displays the status of “the corresponding traffic light group at the intersection ahead” in a digital or graphical manner, or audibly reminds the driver to predict in advance that “the traffic light is at the traffic light at the intersection ahead” status.
  • Step 6 Repeat step 3 to retrieve the "code of the front intersection” and the "code of the corresponding traffic light group at the intersection ahead".
  • the retrieved "code of the front intersection” is compared with the "code of the front intersection” that was retrieved last time. If the same, the step 6 is repeated. If it is different, the information that has left the intersection is reported to the system server and step 4 is executed.
  • the system server 3 is further included, and the function of the "system server 3" is set to manage each intersection in the city as one node.
  • the smart vehicle terminal system 2 carried by the vehicle heading for a certain intersection is added to the intersection node. Forwarding "time setting information and current state information" sent by the intelligent traffic signal system 1 installed at the intersection to the driver in real time
  • the vehicle to the intersection is either processed and forwarded to the vehicle heading for the intersection.
  • the smart vehicle terminal system 2 carried by the vehicle leaving the intersection is removed from the intersection node, and the transmission of the time setting information and current sent by the intelligent traffic light system 1 installed at the intersection is stopped.
  • Status information A command is sent to the intelligent traffic light system 1 of each intersection.
  • the reminder information is transmitted to the smart vehicle terminal system 2 carried by the related vehicle.
  • the "system server 3" can control the intelligent traffic signal system 1 and the intelligent in-vehicle terminal system 2 to synchronously display the same information.
  • the communication mode between the "system server 3" and the intelligent traffic signal system 1 is fixed telephone network communication, cable television network communication, point-to-point optical network communication, TCP/IP network communication, wireless local area network communication, cellular mobile Communication network communication, and one of the private networks.
  • the communication mode between the "system server 3" and the intelligent in-vehicle terminal system 2 is one of wireless local area network communication, cellular mobile communication network communication, and a dedicated network.
  • the intelligent traffic signal system 1 includes a prior art traffic signal, a traffic light set that is electromechanically coupled to the traffic signal. Also included is a mobile phone (ie, a mobile phone) that is connected to a prior art traffic signal by wire or wireless. Or the mobile phone and the traffic signal are integrated on the PCB board level. Or fully integrating the mobile phone with the traffic signal, and replacing the main control chip of the traffic signal with the main control chip of the mobile phone. Or fully integrate the mobile phone with the traffic signal, and properly cut the hardware and software to ensure improved reliability and reduced cost.
  • a mobile phone ie, a mobile phone
  • the traffic signal are integrated on the PCB board level.
  • fully integrate the mobile phone with the traffic signal and properly cut the hardware and software to ensure improved reliability and reduced cost.
  • the intelligent traffic signal system 1 includes a prior art traffic signal, a traffic light group electrically connected to the traffic signal, and further includes a sensor, the sensor including at least one of the following: Sensor, piezoelectric sensor, infrared sensor, gravity sensor, gravity sensing sensor, magnetic sensitive sensor, laser range finder, camera, radar, ultrasonic sensor, stereo camera, infrared camera, said sensor and said traffic signal electromechanical Connect or electrically connect to a dedicated processor.
  • the smart vehicle terminal system 2 is a smart phone, and the smart phone has dedicated software installed therein.
  • the smart in-vehicle terminal system 2 is a dedicated device in which dedicated software is installed.
  • the encoding of the intersection uses "mobile number encoding” or "encoding of letters and numbers", the letters being Unicode characters.
  • the naming rules for each road that converge at each intersection are: the direction direction of the map is from north to south, and left to right.
  • the reference direction direction establishes a coordinate system in the horizontal plane of the whole city.
  • the positive direction of the X axis points to the east
  • the positive direction of the Y axis points to the north
  • an auxiliary coordinate system is established at any intersection, which is the positive direction of the X axis.
  • the positive direction of the Y-axis points to the north, counting from the positive direction of the X-axis in a counterclockwise direction.
  • the road that coincides with the positive of the X-axis or the smallest angle is the road 1, and the rest are the road 2, the road 3, the ..., the road n.
  • Each of the roads converging at each intersection has a positive direction, and the positive direction of each road is the traveling direction of the motor vehicle traveling toward the intersection on the road.
  • Each of the roads converge at each intersection includes at least two lanes, and the lanes whose positive directions point to the same intersection are sequentially coded in Arabic numerals.
  • the embodiment of the invention has the following advantages: (1) With the system and method of the embodiment of the invention, the motor vehicle can save 5% fuel, improve the traffic efficiency by 10%, and reduce pollutant emissions by 15%. (2) When the vehicle with the same driving direction has the same red light, the intelligent vehicle terminal system reminds all drivers to start the vehicle at the same time, which reduces the waiting time of the vehicle at the intersection, improves the traffic efficiency of the entire urban road network, and improves the urban machine. The average traffic speed of the motor train greatly reduces pollutant emissions when the average traffic speed reaches 40-60km/h.
  • the vehicle using the device of the embodiment of the present invention displays the state of the traffic signal in the driving direction of the vehicle on the screen, and reminds the driver in advance of the state of the traffic light at the front intersection in a digital, graphical or sound manner to assist the driver.
  • Make driving decisions That is, is it a red light passing through the front intersection at a faster speed or after traveling at a constant speed to the intersection? In short, you can safely drive to avoid sudden braking.
  • the red-green blind patient can also take the driver's license and drive the vehicle calmly, because the device of the embodiment of the present invention can use the text, graphics or sound to remind the driver to predict the state of the traffic light at the front intersection in advance, and only the driver needs normal hearing.
  • Crossroad junction technology can be used to improve the efficiency of intersections.
  • the system and method of the embodiment of the present invention can improve the traffic efficiency of the intersection by using the "green light relay technology" for the 3-5 consecutive intersections that meet the requirements.
  • the "system server” can accurately evaluate the "congestion situation” of each intersection, and can assist the driver in route selection.
  • the "system server” can comprehensively consider the traffic capacity of the next intersection to determine the number of traffic of the previous intersection and optimize the traffic of one area.
  • the "system server” can intelligently solve the congestion;
  • the bus adopts the system and method of the embodiment of the present invention, and the pedestrian can know in advance the nearest to the station The location of the bus and the estimated time of the bus to the station.
  • Bus Using the system and method of the embodiment of the present invention, a city traffic manager can accurately understand the needs of pedestrians, and meet the needs of pedestrians by forming a "motorized bus fleet” and temporarily determining routes and stations.
  • the haze weather highway can still be opened normally.
  • the traffic signal of a certain intersection is broken, and the vehicle can still pass normally under the command of the intelligent vehicle terminal system.
  • the intelligent vehicle terminal system has the function of information feedback. When the traffic signal of a certain intersection is broken, the street lamp management department can immediately determine the location of the fault intersection and repair it in time. (18)
  • the intelligent vehicle terminal system can sense the driver's fatigue driving or lack of concentration, and send relevant information to the system server, and the system server will notify the nearby traffic police to notify or notify the traffic manager in real time.
  • the intelligent transportation system will provide an assisted driving decision for the driving route, the traveling speed, and the like.
  • the intelligent transportation system established by the system and method of the embodiment of the present invention will greatly promote the development and application of the automobile unmanned driving technology.
  • Figure 1 is a schematic view of the intersection form.
  • FIG. 2 is a schematic diagram of road coding for intersections and convergence at intersections according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a pedestrian detection area at an intersection according to an embodiment of the present invention.
  • 4a and 4b are flowcharts showing the operation of the application software in the intelligent vehicle terminal system according to the first embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a pedestrian detection area at an intersection according to an embodiment of the present invention.
  • FIG. 6 is a flow chart of application software in an intelligent traffic signal system according to Embodiment 1 of the present invention.
  • FIG. 7a and 7b are flowcharts showing the operation of the application software in the intelligent vehicle-mounted terminal system according to the second embodiment of the present invention.
  • FIG. 8 is a flow chart of application software in an intelligent traffic signal system according to Embodiment 2 of the present invention.
  • FIG. 9 is a schematic diagram of information exchange between systems according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of information exchange between systems according to Embodiment 1 and Embodiment 2 of the present invention.
  • FIG. 11 is a schematic diagram of information exchange between systems according to Embodiment 3 of the present invention.
  • 12a and 12b are flowcharts of a program of an intelligent vehicle-mounted terminal system according to a third embodiment of the present invention.
  • FIG. 13 is a flowchart of a program of application software in a system server according to Embodiment 3 of the present invention.
  • FIG. 14 is a flowchart of a program of application software in an intelligent traffic signal system according to Embodiment 3 of the present invention.
  • FIG. 15 is a schematic diagram of information exchange direction of a technical solution in Embodiment 3 of the embodiment of the present invention.
  • FIG. 16 is a schematic diagram of information exchange direction of a technical solution in Embodiment 4 of the embodiment of the present invention.
  • FIG. 17 is a schematic diagram of a bus location query according to Embodiment 5 of the present invention.
  • Embodiment 18 is a regional map of a city showing pedestrian travel demand according to Embodiment 6 of the present invention.
  • FIG. 19 is a schematic diagram showing the number of vehicles in a red light at a certain intersection according to Embodiment 7 of the present invention.
  • FIG. 20 is a schematic diagram showing the number of vehicles in a red light at a certain intersection according to Embodiment 8 of the present invention.
  • Figure 21 is a schematic view showing the working mode of the pedestrian transfer vehicle at the intersection of the intersection at the intersection of the ninth embodiment of the present invention.
  • FIG. 22 is a schematic diagram of information exchange direction of each system according to Embodiment 15 of the present invention.
  • Figure 23 is a circuit diagram showing the connection of the DIP switch and the control unit according to Embodiment 20 of the present invention.
  • the reference numerals are summarized as: 1-road 1; 2-road 2; 3-road 3; 4-road 4; 5-way 5; 31-zone; 51-zone; 52-sensor installation location; 192-zebra crossing; 193-motor vehicle; 211-roadway pedestrian transfer vehicle; 212-driving route; 213-driver rest area.
  • DownRoad A motorized vehicle leaves the urban road system and stops at a certain parking space, called the “downline network”.
  • Road network occupation time The time difference between a motor vehicle from the “on the road network” to the “down road network”. Only one intersection can pass through at least one intersection to generate a record in the system server.
  • Road network mileage The number of road mileage that a motor vehicle has exercised from the “on-road network” to the “down-net network”. Only one intersection can pass through at least one intersection to generate a record in the system server.
  • Total number of road network vehicles The sum of vehicles entering the urban road system at a certain moment, that is, the sum of the vehicles that have not been “down the road network” after “on the road network”.
  • the total number of road network vehicles per day the sum of the “on-road network” and “down-net” vehicles within 24 hours of a certain day. Assume that only N vehicles are driving within 24 hours in a city's road network, but the system server's final statistics "the total number of road network vehicles per day" must be ⁇ N.
  • Total vehicle road network occupancy time The sum of the respective “road network occupancy time” of the “on-road network” and “down-road network” vehicles within 24 hours of a certain day. Ttotal can be accurately calculated by definition, or it can be predicted in real time through the Big Data model when all vehicles are using navigation.
  • Mtotal of all vehicle road networks the sum of the respective “road network occupancy miles” of the “on-road network” and “down-net” vehicles within 24 hours of a certain day.
  • Road network traffic speed (V): All vehicle road network mileage (Mtotal) / all vehicle road network occupancy time (Ttotal).
  • V Road network traffic speed
  • Mtotal All vehicle road network mileage
  • Ttotal vehicle road network occupancy time
  • Intersection speed The speed at which the motor vehicle in the same direction of travel passes through the middle point of the intersection. When the red light is in the first place, the first car is called the first car.
  • the first car "road speed" can indicate the smoothness and traffic capacity of the intersection.
  • the intersection traffic speed is uploaded to the system server by the intelligent vehicle terminal system.
  • Pedestrian minimum transit time The time required for a pedestrian to pass a certain intersection at a normal speed is called the “Pedestrian minimum transit time” at the intersection.
  • the detection area the area surrounded by the largest boundary of the zebra crossing at a certain intersection is called the detection area. "Field”, when there is no pedestrian in the "detection area”, the intersection is called a temporary pedestrian crossing.
  • the "detection area” in the narrow sense is the area 31 within the dotted line in Fig. 3, and the “detection area” in a broad sense. It is the area 51 within the dotted line in FIG.
  • No pedestrian crossing A junction that is prohibited from passing by pedestrians.
  • Intersection level The bottleneck of urban traffic is at the intersection.
  • the “junction level” of each intersection is different.
  • the total number of vehicles passing through a certain intersection within 24 hours a day can represent the “junction level” of the intersection, which can be used to
  • Each intersection is divided into a first-level intersection, a secondary intersection, a third-level intersection, etc., and the “junction level” can be obtained through accurate statistics of Big Data.
  • the traffic information control device may be, for example, an intelligent traffic signal system or a system server in the embodiment of the present invention or a combination of the two.
  • the traffic information receiving device may be, for example, an intelligent in-vehicle terminal system in the embodiment of the present invention.
  • the traffic information sub-control unit may be, for example, an intelligent traffic signal system in an embodiment of the present invention.
  • the specific geographical location information may be, for example, a certain geographic location on the electronic map, a certain traffic intersection or a certain road, and the like in the embodiment of the present invention.
  • the specific intersection node may be, for example, a certain intersection in the embodiment of the present invention.
  • the specific traffic indication device may be, for example, a traffic light group at a certain intersection in the embodiment of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a system for simultaneously displaying the status of a traffic light at a front intersection includes:
  • the intelligent traffic signal system 1 the intelligent traffic signal system 1 is installed at each intersection, receives an application for the vehicle traveling to the intersection, and transmits the status information of the intersection traffic signal to the vehicle traveling toward the intersection, and receives the far away.
  • the application of the vehicle at the intersection stops sending status information of the traffic signal.
  • the intelligent vehicle terminal system 2 is installed or placed in a motor vehicle and positions and orients the vehicle itself through a satellite positioning system or a satellite positioning navigation module.
  • the code of the front intersection is retrieved, and the application is sent to the intelligent traffic signal system 1 at the front intersection.
  • Receiving status information of the traffic signal sent by the intelligent traffic signal system 1 at the front intersection, decoding the received information, and displaying the status of the traffic signal in the driving direction of the vehicle on the screen, by digital, graphic or sound The way to remind the driver to predict the state of the traffic lights at the intersection ahead of time, to assist the driver in making driving decisions.
  • an application is sent to the intelligent traffic signal system 1 to stop sending the status information of the traffic light passing through the intersection.
  • An intelligent traffic signal system 1 includes a prior art traffic signal And a traffic light group electrically connected to the traffic signal, wherein the mobile phone (ie, a mobile phone) is connected to the traffic signal by wire or wireless. Or merging the mobile phone with the traffic signal, and replacing the main control chip of the traffic signal with the main control chip of the mobile phone.
  • the mobile phone ie, a mobile phone
  • the mobile phone adopts a smart phone and is connected to the converter by using a standard data line.
  • the traffic signal is connected to the converter through a serial port (or other interface provided).
  • the converter has a power source to power the smartphone.
  • the smart phone is directly connected to the corresponding interface of the traffic signal by using a standard data line, thereby achieving mutual communication between the two, and realizing the corresponding interface using the traffic signal as described.
  • the smart phone and the traffic signal use wireless communication, but need to supply power to the smart phone using a standard data line.
  • the function of the converter is to achieve signal conversion between the two.
  • the smart phone only runs a dedicated application software that implements the functions of the embodiments of the present invention, and the used number is uniformly provided by the cellular mobile communication company and the number is externally shielded.
  • the converter can be cancelled, and the traffic signal can be modified or redesigned to have a USB interface or an RS232 interface, so that the smart phone can be directly connected with a standard data line.
  • the traffic signal is provided with a Wi-Fi module to communicate with the smart phone.
  • the traffic signal device is provided with other wireless communication modules such as a Bluetooth module to communicate with the smart phone.
  • a standard data cable is required to power the smartphone.
  • the smart phone is integrated with the traffic signal PCB board, and the smart phone and the respective signals, electronic components, sensors, etc. of the traffic signal are soldered together.
  • the electrical connection of the communication interface is realized by the corresponding circuit design.
  • the PCB board fusion not only solves the communication problem between the smart phone and the traffic signal, but also solves the power supply problem of the smart phone.
  • the benefits of convergence are: proper cutting of hardware and software while satisfying functions can improve reliability and reduce costs, such as the battery, display and casing of the prior art smartphone.
  • another feasible technical solution is to completely integrate the smart phone with the traffic signal, and replace the main body of the traffic signal with the main control chip of the smart phone.
  • Control chip namely: make.
  • the function of the traffic signal is implemented by the smartphone.
  • the smart phone and the traffic signal machine fully integrated with the device should be electromagnetically compatible, and the antenna of the smart phone can be placed on the road.
  • the traffic light is controlled by a higher position on the outside of the box.
  • the embodiment of the present invention needs to encode all the intersections of a city, and there are various methods for encoding.
  • the simplest coding method is “natural number coding”, which means that the intersections are named as follows: intersection 1, intersection 2, ..., Intersection n.
  • This kind of coding method is not easy for traffic managers to recognize, but it is the same for computers.
  • the name is just an identifier.
  • the programming language naming rules for identifiers has two points: (1) identifiers include letters, numbers, and underscores; (2) the first digit of the identifier must be a letter or an underscore, not a number.
  • the embodiment of the present invention adopts a combination of letters and numbers: there are always many main roads in a city, and the whole city is divided into several areas, each of which is divided into several areas.
  • the letter part of the area naming uses the same naming method as the horizontal field of the EXCEL form, such as A, B, C, ..., Z, AA, AB, AC....
  • A1, A2, ..., An, and so on In each cell, such as the intersections in Area A are named: A1, A2, ..., An, and so on.
  • there are many ways to name all intersections in a city such as the naming method of Chinese characters: People's Street and Freedom Road intersection, People's Street and satellite road junctions, and so on.
  • the coding and location information of all intersections are stored in the database, and the association of the encoded data is established according to the adjacent positional relationship of the actual intersection.
  • the database storing the intersection code and the location information is installed only in the smart vehicle terminal system 2 described above.
  • a database containing intersection code and location information is also installed in the system server or in the intelligent traffic light system 1.
  • the code of each intersection also adopts the SIM card number of the smart phone built in the intelligent traffic signal system 1 installed at each intersection.
  • “Mobile number coding" is shared with "encoding of letters and numbers”. It should be noted that the letters are Unicode characters.
  • the database storing the intersection code and the location information can also be loaded into the prior art electronic map, and an encoding retrieval subroutine is designed.
  • intersections As shown in Figure 1a, the vast majority of intersections in cities are intersections. The characteristic is: four roads gathered at a certain intersection, the adjacent two roads are perpendicular to each other, and the two roads separated by each other are collinear.
  • Figure 1b shows the "T-junction", a special case of the intersection.
  • Figures 1c and 1d show a variation of the intersection, characterized in that road 1 and road 3 are collinear, and at least one of road 2 and road 4 has an acute angle with road 1 or road 3.
  • Figure 1e shows a star-shaped intersection, which is characterized by the fact that any two of the three roads that are converging are not collinear.
  • Figure 1f is the roundabout intersection, which is characterized by the number of roads ⁇ 5, and there is a circular road connecting all the roads.
  • the naming rule for each road that is concentrated at a certain intersection is as follows: the direction direction of the map is north to south, and left to right.
  • the reference direction direction establishes a coordinate system in the horizontal plane of the entire city, with the positive direction of the X axis pointing to the east and the positive direction of the Y axis pointing to the north.
  • An auxiliary coordinate system is established at both places, the positive direction of the X axis points to the east, the positive direction of the Y axis points to the north, and the counterclockwise direction is counted from the positive X axis.
  • each road is named according to this rule.
  • the roads in Fig. 1 are only marked as 1, 2, 3..., n.
  • each road that is concentrated at a certain intersection has a positive direction
  • the positive direction of each road is the traveling direction of the motor vehicle traveling toward the intersection on the road.
  • One way of expressing the positive direction is: at the intersection, the road is at an angle to the X-axis in a clockwise direction. As shown in Fig.
  • the angle between the road 1 and the X axis is 0 degrees
  • the angle between the road 2 and the X axis is 90 degrees
  • the angle between the road 3 and the X axis is 180 degrees
  • the same "road” in Fig. 2 is divided into two parts according to the traveling direction of the motor vehicle, and is called road 3 with respect to the intersection A2, and the positive direction is P1. It is called road 1 with respect to intersection A1, and P2 is positive direction.
  • the road 3 with respect to the intersection A2 in Fig. 2 is multi-lane, in the case of two lanes, the naming rules are 31, 32, and the lane closest to the inner side is 31.
  • the naming rules are 31, 32, and 33, and the lane closest to the inner side is 31.
  • the road 1, the road 2, the road 3, and the road 4 that are concentrated at the intersection A2 are all three lanes. Named as: 11, 12, 13, 21, 22, 23, 31, 32, 33, 41, 42, 43, to improve retrieval speed for easy retrieval, the above sequence is named using Arabic numerals: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 11 correspond to 1, 12 corresponds to 2, 13 corresponds to 3, 21 corresponds to 4, ....
  • each road is a two-way lane
  • the four roads are named in a counterclockwise order: 1, 2, 3, 4.
  • Each road is a two-way lane.
  • the four roads are named in the counterclockwise order: 1, 2, 3, 4 (the same “road” in Figure 2 is divided according to the direction of travel of the motor vehicle. For the two parts, each part is named when it is named.
  • the lane is further named).
  • the purpose of naming the various roads that converge at the intersection is to associate each road with the traffic light group in front of the road.
  • an electronic map is needed.
  • the electronic map of the prior art has stored related information of a city road, and the car navigation device calculates according to the received GPS signal or the Beidou signal according to a prescribed rule.
  • the ground position coordinates of the vehicle itself can be determined, and then the position of the vehicle itself on a certain road in the electronic map can be determined by a certain algorithm (this is Positioning). After determining at least two positions, the direction of travel (this is the orientation) can be determined.
  • the embodiment of the present invention needs to load the coding and location information of all intersections of a city onto an electronic map.
  • the function of a subroutine is to return the electronic map to the code of the front intersection and the code of the traffic light group corresponding to the driving road (or the code of the traffic light corresponding to the driving lane) according to the positioning and orientation information provided by the car navigation system or the positioning navigation module, or When passing a certain intersection, the "already passed information" that has passed the intersection is returned.
  • the smart in-vehicle terminal system 2 of the present embodiment is implemented by using a smart phone and installing a dedicated application software that can implement the functions required by the embodiments of the present invention.
  • the application software implements a flowchart of the functions of the embodiments of the present invention.
  • the precondition is: First, the coding and location information of all intersections of a city are loaded onto the electronic map, and the intersection code in this embodiment is encoded as a mobile phone number (code combined with "letter and number"). Sharing, the former is used by computer software, the latter is used by traffic managers. The meaning of letters includes Chinese characters.). Obviously, this information is stored in the intelligent vehicle terminal system 2.
  • the second is to associate a traffic light group of each city at each intersection with the intersection of the road itself and the positive direction of the X-axis in the clockwise direction, or associated with the road, and according to the set message format. Edited into a message waiting to be sent to the motor vehicle joining the intersection node, obviously this information is stored in the intelligent traffic signal system 1.
  • the application software workflow in the smart vehicle terminal system 2 is:
  • the main control program calls the subroutine 1, and the subroutine 1 returns the positioning and orientation information of the motor vehicle itself provided by the car navigation system or the positioning navigation module.
  • the positioning information is a coordinate value
  • the orientation information is an angle value.
  • the main control program calls the subroutine 2, and the subroutine 2 is the code retrieval subroutine, uses the electronic map information, inputs the positioning and orientation information of the vehicle, returns the code of the front intersection and the code of the traffic light group corresponding to the road, and the code of the front intersection. That is, the mobile phone number of the smart phone in the intelligent traffic signal system 1 at the front intersection.
  • the main control program calls the subroutine 3, and the subroutine 3 is a communication subroutine.
  • the information of the request to join the intersection node is sent to the front intersection through the in-vehicle smartphone.
  • the smartphone of the intelligent traffic signal system 1 at the front intersection adds the requested vehicle to the intersection node, and sends the status information of the traffic signal of the intersection to the intersection at a certain time interval (for example, 1 second).
  • the requesting vehicle for example, 1 second.
  • the main control program After receiving the traffic signal status information of the front intersection, the main control program calls the subroutine 4, and the subroutine 4 is a display subroutine, and according to the own orientation information or the code of the traffic light group corresponding to the obtained traveling road, the traffic light of the forward direction is set.
  • the status is shown on the display and broadcast via voice.
  • voice broadcast start time by motor vehicle and front The distance of the intersection is determined and can be set by the driver.
  • the subroutine 2 returns the code of the front intersection, compares this code with the code obtained the previous time, and if it is the same, proceeds to step 5; if it is different, it executes step 6.
  • the main control program of the intelligent vehicle terminal system 2 described above calls the subroutine 3, and the subroutine 3 is a communication subroutine, and sends a request message to the front intersection through the in-vehicle smartphone according to the set message format, requesting to stop the transmission of the signal state. information.
  • the smart phone of the intelligent traffic signal system 1 at the front intersection removes the requested vehicle from the intersection node and stops transmitting the status information of the traffic signal of the intersection.
  • Execute step 3 which indicates that the car has passed an intersection and is heading for the next intersection, and will get the status information of the traffic lights at the next intersection.
  • the “positioning and orientation information of the input vehicle” in step 2 may also be expressed as two positioning information of the input vehicle.
  • the application software workflow in the intelligent traffic signal system 1 is:
  • the main control program calls subroutine 1, and sends the status information of the traffic signal of the intersection node to each car that joins the intersection node at a certain time interval (for example, 1 second).
  • the main control program After receiving the request sent by the vehicle traveling to the intersection, it is determined whether the vehicle requests to join the intersection node. If the request is to join the intersection node, the main control program calls the subroutine A, and the smart vehicle terminal system of the vehicle is added to the intersection node. If it is not requested to join the intersection node, the main control program calls the subroutine C to remove the smart vehicle terminal system of the vehicle from the intersection node.
  • the communication between the intelligent traffic signal system 1, the intelligent vehicle terminal system 2 and the system server uses a short message service SMS (Short Message Service) provided by the mobile communication network.
  • SMS Short Message Service
  • the short message service provided by the mobile communication network belongs to the prior art and will not be described herein.
  • the smart vehicle terminal system 2 in each vehicle will synchronously display the red light state of the forward direction of the front intersection.
  • the voice broadcast 50 seconds for red light, 40 seconds for red light, 5 seconds for red light, and ready to get started with the set voice prompt.
  • the intelligent vehicle terminal system 2 reminds all drivers to start the vehicle at the same time and quickly pass through the intersection, avoiding the waste of 3 seconds when the green light starts.
  • the waiting time of the vehicle at the intersection is reduced, the "road crossing speed" is improved, the traffic efficiency of the entire city road network is improved, and the average traffic speed of the city motor vehicle is also improved.
  • the driver can rest freely while waiting for the red light.
  • the taxi driver can ignore his or her own expectations and predict when he will start the vehicle by observing the green light flashing in other directions to maximize his profit time.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the technical solution of the first embodiment occupies a lot of system resources, because every second, the intelligent traffic signal system 1 of a certain intersection will send the status information of the traffic lights of the intersection once, which also increases the user (driver or traffic). Manager's communication fee.
  • This embodiment is an improvement of the first embodiment.
  • the intelligent traffic signal system 1 at the front intersection adds the requested vehicle to the intersection node, and the traffic signal of the intersection is The status information is sent to the vehicle requesting to join, and is sent only once.
  • the application software workflow in the intelligent vehicle terminal system 2 is shown in Figs. 7a and 7b, and the application software workflow in the intelligent traffic signal system 1 is as shown in Fig. 8.
  • the main program of the intelligent vehicle terminal system 2 will call the subroutine 5, and the subroutine 5 is a traffic light subroutine (the program flow chart and software implementation of the traffic light subroutine belong to the prior art, and will not be described here).
  • the traffic light group information related to the forward direction of the vehicle is extracted from the state information, and it is assumed that there are three lights in the forward direction of the vehicle, namely red light, green light and yellow light.
  • the time setting sent is: red light for 30 seconds, green light for 27 seconds, and yellow light for 3 seconds.
  • the green light is now displayed. It has been displayed for 18 seconds.
  • the time that is currently being displayed is subtracted by 0.2 seconds until it is reduced to zero, then the yellow light is displayed, and after 3 seconds, it is reduced to 0. Then, the red light is displayed again, and at a certain time (such as 0.2 seconds), the time that is currently being displayed is subtracted by 0.2 seconds until it is reduced to zero, so that it is repeated.
  • the "every certain time” set in this embodiment is 0.2 seconds, and can be freely set according to actual needs.
  • the integer second start time (such as 17 seconds, 16 seconds). as the time triggering the main control program jumps to the fifth step:
  • the main control program receives the "status information of the front intersection" sent by the self-lighting green subroutine, and then calls the subroutine 4, and the subroutine 4 displays the subroutine, and according to its own orientation information, the traffic light state of the forward direction is forwarded according to its own orientation information. Displayed on the display and voice broadcast, such as: red light 50 seconds, red light 40 seconds, .... The start of the voice announcement is determined by the distance of the motor vehicle from the front intersection and can be set by the driver.
  • the intelligent traffic signal system 1 transmits the "time setting information and current state information" of the intersection only once, which greatly saves system resources. However, this may affect the intelligent vehicle terminal system 2
  • One solution to the synchronization accuracy with the intelligent traffic signal system 1 is to calibrate by adding a status signal transmission of the traffic light.
  • the delay of the mobile communication network Another factor affecting the synchronization accuracy is the delay of the mobile communication network.
  • the mobile communication network has a fast response speed and good stability, and can be used as a real-time measurement and control network, but sometimes it still has a delay.
  • the technical solution to be solved is to make the intelligent traffic signal system 1 and the intelligent vehicle terminal system 2 achieve time synchronization by using the automatic time synchronization function of the mobile communication network, and include the transmission time information in the message, and the intelligent vehicle-mounted terminal system 2 receives the front intersection. After the status information of the traffic signal, the signal delay generated by the mobile communication network in the data transmission is corrected by time comparison.
  • the state of the traffic light in the forward direction of the vehicle displayed by the intelligent vehicle terminal system 2 necessarily has an error, and the user has a certain tolerance to the error, generally speaking, there is no problem in one second.
  • this embodiment is designed to remind the driver to start the vehicle three seconds ahead of time, and that the passenger car or truck with a higher quality is designed to remind the driver to start the vehicle five seconds in advance. The reminder time is set by the user.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the system server is added, and the status information of the traffic signal is transmitted according to a certain time interval.
  • a system for simultaneously displaying the status of a traffic light at a front intersection comprising an intelligent traffic signal system 1 and an intelligent vehicle terminal system 2.
  • the system server is further configured to: each of the intersections in the city is managed as a node, and the smart vehicle terminal system carried by the vehicle heading to the intersection 2 Joining the intersection node, the status information sent by the intelligent traffic light system 1 installed at the intersection is forwarded to the vehicle heading to the intersection in real time, or processed and then forwarded to the vehicle heading to the intersection.
  • the smart vehicle terminal system 2 carried by the vehicle leaving the intersection is removed from the intersection node, and the transmission of the status information transmitted by the intelligent traffic signal system 1 installed at the intersection is stopped.
  • a command is sent to the intelligent traffic light system 1 of each intersection.
  • the reminder information is transmitted to the smart vehicle terminal system 2 carried by the related vehicle. Evaluate the traffic or congestion at each intersection and send the evaluation results to the relevant vehicle.
  • the "system server” can control the intelligent traffic signal system 1 and the intelligent in-vehicle terminal system 2 to synchronously display the same information.
  • the embodiment includes three systems: an intelligent traffic signal system 1, an intelligent vehicle terminal system 2, and a system server (as shown in FIG. 9), and information exchange can be performed between any two systems according to actual needs, the arrow in FIG. The direction indicates the direction in which the information is sent.
  • the information exchange between the intelligent traffic signal system 1 and the intelligent vehicle terminal system 2 is shown, which is the technical solution described in the first embodiment and the second embodiment.
  • This embodiment The technical solution described is as shown in FIG. 11.
  • the intelligent traffic signal system 1 and the intelligent vehicle terminal system 2 respectively have information exchange with the system server, but there is no information exchange between the intelligent traffic signal system 1 and the intelligent vehicle terminal system 2, obviously
  • the system server has a mobile communication interface and a mobile communication module.
  • the main control program calls the subroutine 1, and the subroutine 1 returns the positioning and orientation information of the motor vehicle itself provided by the car navigation system or the positioning navigation module; the positioning information is a coordinate value, and the orientation information is an angle value.
  • the main control program calls the subroutine 2, and the subroutine 2 is a code retrieval subroutine, uses the electronic map information, inputs the positioning and orientation information of the vehicle, and returns the code of the front intersection and the code of the traffic signal group in the direction of the front intersection.
  • the main control program calls the subroutine 3, and the subroutine 3 is a communication subroutine, and sends information requesting to join the intersection node to the system server through the in-vehicle smart phone or the dedicated device according to the set message format.
  • the system server adds the requested vehicle to the intersection node, and sends the status information of the traffic signal of the intersection to the vehicle joining the node at a certain time interval (for example, 1 second).
  • the main control program After receiving the traffic signal status information of the front intersection sent by the system server, the main control program calls the subroutine 4, and the subroutine 4 is a display subroutine, and advances the direction according to the own orientation information or the code of the signal light group in the direction of the vehicle line.
  • the status of the traffic light is displayed on the display and voice broadcast, such as: red light 50 seconds, red light 40 seconds, ....
  • the start of the voice announcement is determined by the distance of the motor vehicle from the front intersection and can be set by the driver.
  • subroutine 2 returns the code of the front intersection and the code of the signal group in the direction of the front intersection, and compares the code of the front intersection with the code obtained the previous time. If they are the same, continue 5; If it is different, go to step 6.
  • the master program of the intelligent vehicle terminal system 2 described above calls the subroutine 3, and the subroutine 3 is a communication subroutine, and sends a request message to the system server through the in-vehicle smartphone or the dedicated device according to the set message format, requesting to stop.
  • Send traffic light status information The system server removes the local node from the vehicle that sent the request, and stops sending the status information of the traffic light at the intersection.
  • Execute step 3 which indicates that the car has passed an intersection and is heading for the next intersection, and will get the status information of the traffic lights at the next intersection.
  • the “positioning and orientation information of the input vehicle” in step 2 may also be expressed as two positioning information of the input vehicle.
  • the main control program calls subroutine 1, and transmits the status information of the traffic lights of each intersection node to each car that joins the intersection node at a certain time interval (for example, 1 second).
  • Call subroutine D associate state information sent by an intelligent traffic signal system with the intersection node.
  • FIG. 14 it is a program flow chart of application software in the intelligent traffic signal system, and the workflow is as follows:
  • the main control program calls subroutine 1, and sends the status information of the traffic signal of the intersection node to the system server at a certain time interval (for example, 1 second).
  • the main control program calls the subroutine 1, and sends the status information of the traffic signal of the intersection node to the system server at a certain time interval (for example, 1 second).
  • This embodiment adds a system server as compared with the first embodiment and the second embodiment.
  • the system server can uniformly manage all the intelligent traffic signal systems 1 in all the intersections of a city and all the intelligent vehicle terminal systems 2 in the road network of a city. If a car is ready to complete a task of the driver, from the "on the road network" to the "downline network", the intelligent vehicle terminal system 2 will obtain the status information of the traffic signal at the front intersection through the system server, after decoding The status of the traffic signal in the direction of the direction is displayed on the display, and the status of the "in-vehicle traffic light" assists the driver in making driving decisions.
  • the intelligent vehicle terminal system 2 When the red light is on, the intelligent vehicle terminal system 2 will remind all drivers to start the vehicle at the same time and quickly pass through the intersection, avoiding the waste of 3 seconds when the green light starts, reducing the waiting time of the vehicle at the intersection and improving the "road crossing speed”. , improve the efficiency of the entire city road network.
  • the voice broadcast function of the "traffic lights in the car” enables the red-green blind patients to drive the vehicle freely.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the intelligent traffic signal system 1 of each intersection sends the status information of its traffic signal to the system server. Every After a certain period of time (such as one second), the system server will send the status information of the traffic lights of each intersection node to each car that joins the intersection node. This mode takes up a lot of system resources and increases the communication costs of users (drivers or traffic managers).
  • the information exchange direction of the technical solution in the third embodiment is as shown in FIG.
  • the information exchange between the intelligent traffic signal system 1 and the system server is one-way, and the information exchange between the system server and the intelligent vehicle terminal system 2 is two-way.
  • This embodiment is an improvement of the third embodiment.
  • the information exchange direction in the technical solution is as shown in FIG. 16.
  • the prior art intelligent transportation system (ITS) or the single intersection traffic signal, the traffic light program (or the traffic light subroutine) are all operated in the traffic signal installed at the intersection, and the program flow chart and software implementation of the traffic light subroutine are well known. technology.
  • the functions of the intelligent traffic signal system 1 and the intelligent vehicle terminal system 2 are the same, except that the intelligent traffic signal system 1 controls the state of the traffic light at the intersection, and
  • the smart vehicle terminal system 2 displays the traffic light status of the front intersection on the display screen of the smart phone, or displays the traffic light status of the front intersection on the display screen of the instrument panel, or displays the "in-vehicle traffic light” provided by the embodiment of the present invention.
  • a car just passes through the A1 intersection and goes to the A2 intersection.
  • the intelligent vehicle terminal system 2 sends a message requesting to join the A2 intersection node to the system server through the in-vehicle smart phone.
  • the system server sends the "time setting information and current status information" of the traffic light of the A2 intersection.
  • the traffic light time setting in the forward direction of the vehicle is: red light 30 seconds, green light 27 seconds, yellow light 3 seconds , now the green light is displayed, it has been displayed for 18 seconds.
  • the intelligent vehicle terminal system 2 calls the traffic light subroutine, and at a certain time (for example, 1 second), subtracts the time currently being displayed by 1 second until it is reduced to zero, and then displays a yellow light, and after 3 seconds, it is reduced to 0, and then A red light is displayed, and at regular intervals (such as 1 second), the time that is currently being displayed is subtracted by 1 second until it is reduced to zero, so that it is repeated.
  • a certain time for example, 1 second
  • the "every certain time” set in this embodiment is 1 second, and can be freely set according to actual needs.
  • the main program will call the subroutine 4, and the subroutine 4 will display the subroutine to display the status of the traffic light in the forward direction of the vehicle.
  • the subroutine 4 will display the subroutine to display the status of the traffic light in the forward direction of the vehicle.
  • voice such as: red light 50 seconds, red light 40 seconds, ....
  • the start of the voice announcement is determined by the distance of the motor vehicle from the front intersection and can be set by the driver.
  • the same procedure is run in the intelligent traffic light system 1 at the intersection of A2, and the traffic lights installed at the intersections show the same state.
  • the intelligent traffic signal system 1 at the A2 intersection will run the last control parameter step by step, and the parameters include time setting. Information and real-time status information at a certain time.
  • the intelligent traffic signal system 1 needs to perform security confirmation before execution.
  • the message with the transmitted time information is compared with its own time system (the three systems in Figure 16 should achieve time synchronization through time calibration). The difference should be less than the set value ⁇ ( ⁇ according to the actual setting) set).
  • each intersection has several preset signal control modes, and the time setting information sent by the system server should be one of them.
  • the technical solution of the embodiment provides a flexible solution for optimizing the control signal of the traffic signal of each intersection.
  • the present embodiment fully utilizes the computing power of the intelligent traffic signal system 1 and the intelligent vehicle terminal system 2 in the process of realizing the 20 functions listed in the "the embodiment of the present invention has the following advantages" in the present specification, thereby saving the system server. Computing resources, while increasing the stability and security of the system, and can minimize the driver's communication costs.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • Embodiments 1 to 4 illustrate "a system and method for simultaneously displaying the status of a traffic light at a front intersection".
  • the first embodiment and the second embodiment adopt two systems: an intelligent traffic signal system 1, and an intelligent vehicle terminal system 2.
  • the third embodiment and the fourth embodiment adopt three systems: an intelligent traffic signal system 1, an intelligent vehicle terminal system 2, and a system server.
  • the architecture of the third embodiment and the fourth embodiment is an intelligent transportation system (ITS), and many functions can be realized through different software and hardware designs.
  • ITS intelligent transportation system
  • the bus location query is implemented.
  • the driving route of city buses is fixed. There are some principles for bus companies to determine the driving route. One of them is the travel demand of the citizens. It is not only simple to carry from the beginning to the destination, but also to meet the travel needs of the citizens. The bus is required to travel faster and have a higher density. However, because urban traffic is becoming more and more congested, under normal circumstances, there is no special road for buses. It is difficult to realize the bus to arrive at the station. It is a very high job requirement to be able to start the on-time station and the terminal station on time.
  • 152 bus (hereinafter referred to as 152 cars) travels according to the prescribed route and the prescribed time, it always passes through the intersection on the line.
  • the intelligent vehicle-mounted terminal system 2 carried by each of the intersections 152 will send a request to the system server to obtain the status information of the traffic lights at the front intersection sent back by the system server, and the information required by the 152 vehicles can realize the "in-vehicle traffic lights".
  • the 152 car will again send a request to the system server to stop sending the status information of the traffic light just passing through the intersection.
  • the 152 car leaves a record in the system server: which time has passed which direction the road has gone, and each intersection is a node on the driving line. If passerby A is going to take 152 cars at Shanghai Road Station, he uses the special search software APP in the mobile phone and enters “152 cars”.
  • the system server After displaying all the 152 roads, select “Shanghai Road Station”, then select the nearest car to the station. After clicking Confirm, the system server will return the information.
  • the information shows that there is a 152 car that has just passed Beijing Road and the direction of travel is the end. There is a 152 car just passing through Shenzhen Road, the driving direction is the starting point.
  • the system server will also give the number of kilometers from the station, or calculate the time to arrive at the station through big data mining. In fact, if passerby A often rides on the 152 bus, he can judge the location of the 152 bus that he is going to take, based on the information of the 152 bus stop and the return information, and can also determine the approximate time of the arrival of the car. .
  • the dedicated search software APP can also retrieve other information related to the bus line, such as the time of departure, the time of pick-up, and the time at which a station on the line arrives at the station.
  • location information other than the intersection on the bus line is not processed.
  • the embodiment provided by the present invention is actually an intelligent transportation system (ITS), and many functions can be realized through different software and hardware designs.
  • ITS intelligent transportation system
  • This embodiment is based on the above system, accurately obtaining the travel demand of pedestrians, and meeting this demand by establishing a "motorized bus fleet”.
  • This embodiment needs to develop a dedicated mobile phone application, that is, a dedicated search software APP.
  • a dedicated mobile phone application After preparing to take the bus to a certain station, open the mobile phone application, input the starting point station, the terminal station, and also need to input which bus to prepare for the bus, press the confirmation, and wait.
  • the system server of the embodiment of the present invention runs a subroutine to accurately count the number of people and the location distribution of a bus (such as the 152 road car) that is ready to take a bus in real time. If the system server calculates that there is a bus that cannot meet the demand, it can The "mobile bus fleet" is deployed through the bus management system to meet this demand.
  • the LED screen on the front of the bus installed in the "Motorized Bus Team" will display 152 channels.
  • the system server will also send the information of the added bus to the pedestrian who is going to take the 152 bus by SMS. After the mission is completed, the added bus will return to the designated location for standby. This shows that the “motorized bus fleet” is usually in various locations in the city when it is on standby.
  • the system server can sometimes command a "motorized bus fleet” to deal with some special circumstances. As shown in Figure 18, it is a regional map of a city. As described above, when the passenger is ready to take the bus to a certain station, open the mobile phone application, input the starting station, the terminal station, and input the bus to be confirmed to press, the system server will run a subroutine to draw The traveler demand map, in which various symbols are used to indicate "traveler start point mark" and "traveler end point mark”. Through this picture, urban traffic managers can plan new bus routes and direct the “motorized bus fleet” to accomplish this task.
  • the system server notifies all the people who use the mobile phone application by SMS, and informs the newly planned route, site and departure time, so that the traveler can prepare in advance.
  • Accurate, economical, real-time is the function of the Intelligent Transportation System (ITS) provided by the embodiments of the present invention.
  • ITS Intelligent Transportation System
  • the embodiment provided by the present invention is actually an intelligent transportation system (ITS), and many functions can be realized through different software and hardware designs.
  • This embodiment controls the green time of the traffic light according to the actual number of actual vehicles in each direction of each intersection.
  • the prior art Intelligent Transportation System (ITS) or the one-way traffic light control system provides a fixed traffic light control signal or provides several control schemes to select according to timing. For example, daylight is a solution that has a longer green time for both directions of the intersection (can guarantee "minimum pass time for pedestrians"), allowing more cars to pass through the intersection quickly. Evening is another option. For the two directions of the intersection, the green time is shorter (the “passenger minimum pass time” can be guaranteed) to accommodate the situation where there are fewer people at night.
  • SCATS Australian Intelligent Traffic Control System
  • SCATS Australian Intelligent Traffic Control System
  • the intelligent transportation system can accurately and accurately count the total number of vehicles of any intersection that have not passed the intersection in real time.
  • the intelligent traffic signal system 1 in the first embodiment and the second embodiment can count the total number of vehicles at the intersection that have not passed the intersection (this is mode one).
  • the system server in the third embodiment and the fourth embodiment can count the total number of vehicles that have not passed the intersection at any intersection (this is mode 2).
  • the principle of statistics is: taking mode 1 as an example, as shown in Fig. 2 and Fig. 19, when the smart vehicle terminal system 2 carried by a motor vehicle obtains the code of the front intersection, it is A1, and will follow the set message format to the front.
  • the intersection sends a request to join the information of the intersection node.
  • the intelligent traffic signal system 1 is statistically measurable for the total number of vehicles that have joined the intersection node and have not yet applied for removal from the intersection node, and can be statistically accurate. As shown in Fig. 19, the intelligent traffic signal system 1 at the A1 intersection can accurately count the total number of vehicles traveling in the north direction is M; the total number of vehicles traveling in the south direction is N; the total number of vehicles traveling in the west is Q vehicles; the total number of vehicles heading for the east is P. According to a certain algorithm, running a subroutine can reasonably arrange the green time in all directions (need to ensure "passenger minimum transit time") to maximize the efficiency of traffic.
  • the statistical principle of Mode 2 is the same as that of Mode 1.
  • the method provided in the seventh embodiment can greatly improve the traffic efficiency of the intersection to a certain extent, but must ensure the "passenger minimum transit time".
  • the intersection can detect that there is no pedestrian, changing the traffic light in the direction of the vehicle to a green light will also improve the traffic efficiency of the road network.
  • An intelligent traffic signal system includes a traffic signal device of the prior art, a traffic light group electrically connected to the traffic signal, and further includes a sensor.
  • the sensor includes at least one of the following: a photoelectric sensor, a piezoelectric sensor, an infrared sensor, a gravity sensor, a gravity sensing sensor, a magnetic sensitive sensor, a laser range finder, a camera, a radar, an ultrasonic sensor, a stereo camera, and an infrared ray.
  • the camera is electrically connected to the traffic signal or to a dedicated processor.
  • the pedestrian detection area includes only the zebra crossing portion, and the area 31 surrounded by the broken line in FIG.
  • the pedestrian detection area includes a range large enough to be the area 51 surrounded by a broken line.
  • the photoelectric sensor is arranged at four positions where 52 is located in FIG. 5.
  • the intelligent traffic signal system of the intersection defines the intersection as “temporarily no pedestrian crossing”.
  • the information is sent to the system server (one of the information/message formats is used to communicate the intersection status).
  • the system server runs a subroutine according to a certain algorithm according to the total number of vehicles in each direction of the intersection, and controls the state of the traffic signal to quickly pass the vehicles in all directions.
  • intersection reduces waiting time and improves the efficiency of intersections. If a pedestrian enters the detection area of the intersection at a certain moment, the intelligent traffic signal system will restore the intersection to a normal intersection state, that is, "have a pedestrian intersection", and send the status of the intersection to the system server, the system server The control method of the traffic lights at this intersection will guarantee the "minimum pass time of pedestrians".
  • a technical solution is to make the pedestrian detection area large enough, so that the system server has sufficient reaction time to ensure the safety of pedestrians, and to shorten the waiting time of the vehicle by controlling the state of the traffic signal, thereby improving the passage of the road network. effectiveness.
  • Another technical solution is to share a variety of sensors, to expand the pedestrian detection area, the sensor is installed at a lot of intersections, such as pedestrian signal light poles, traffic light poles, high-definition camera mounting posts, etc., can also determine the appropriate installation location . For example, installing two high-definition cameras for pedestrian detection at appropriate locations on the existing intersections can be called a multi-functional stereo camera (SMPC), or a stereo camera, which can acquire stereoscopic objects and pedestrians in the road.
  • SMPC multi-functional stereo camera
  • the placement of the sensor at the intersection is not only to detect pedestrians, but also to detect other moving targets, such as cyclists, motorcyclists, other vehicles, and the like. Considering the cost, the sensor for detecting pedestrians can only be installed at some key intersections, and it is only used for a certain period of time according to big data analysis.
  • the technical solution provided in the seventh embodiment is to ensure the waiting time of the vehicle by controlling the state of the traffic signal according to the actual number and direction of the vehicle in the case of ensuring the "minimum pedestrian transit time" at the intersection, thereby improving the traffic efficiency of the road network. .
  • This method is implemented in the case where the intersection state is "having a pedestrian crossing”.
  • the technical solution provided in the eighth embodiment is implemented in the case where the intersection state is “temporarily no pedestrian crossing”, because the vehicle passing efficiency of the intersection is more efficient because there is no need to guarantee “the minimum passing time of the pedestrian”.
  • Every medium-sized city in China (a city with a population of more than 1 million people) has several main roads.
  • the intersection formed by the intersection of main roads is called a big intersection. It is characterized by wide roads, many lanes, and large traffic volume.
  • the transportation hub of the city Because pedestrians take a long time from one end to the other, the traffic signal cycle is long, and the vehicle needs to wait for more than two red light signals to pass, so the driver is subject to certain psychological pressure through the intersection.
  • the city's traffic management department has practiced many methods.
  • people and vehicles are diverted. Because the speed of the pedestrian and the speed of the vehicle do not match, the result of the mixed flow is the intersection of the vehicle.
  • the speed of traffic is reduced, which is also the source of congestion at major intersections.
  • the intersection is the transportation hub of the city, pedestrians pass during the daytime, especially in the morning and evening peak hours. Intersection, so mixed flow is inevitable, and congestion is inevitable.
  • One method used in the existing shunting of people and vehicles is to build underground tunnels. One difficulty of this method is that it cannot be constructed because of underground facilities. Another method is to build a crossover bridge. One difficulty of this method is that the investment is huge, and the bridge is also affected after the bridge is repaired. And the above two methods have a common deficiency: some pedestrians refuse to use, or walk the ground sidewalk.
  • the method provided in this embodiment is to provide an "intersection pedestrian transfer vehicle" at the intersection, so that the pedestrian who is going to pass the intersection can sit on the "crossing pedestrian transfer vehicle”.
  • This method turns the intersection into a “no pedestrian crossing”, and the system server controls the traffic lights at the intersection according to the tested traffic light signal cycle.
  • the intelligent traffic signal system provided by the embodiment of the present invention is installed at the intersection, and the driver uses the intelligent vehicle terminal system, when the traffic light in the direction of the vehicle turns into a green light, the vehicle waiting for the red light is smart.
  • the vehicle terminal system will be prepared under the reminder of the vehicle. When the green light signal appears, the red light vehicle will pass through the intersection as fast as the road train. As shown in Figure 21, it is a large intersection with four lanes in both directions.
  • the intersection is numbered H1.
  • eight pedestrian transfer stations are set up at the intersection, numbered a-h.
  • the driving route of the two "road crossing pedestrian transfer vehicles" 211 set in the figure is a ring, and the driving route is: a ⁇ b ⁇ c ⁇ d ⁇ e ⁇ f ⁇ g ⁇ h ⁇ a.
  • the two transfer vehicles arranged are equally spaced and travel along the route 212 counterclockwise.
  • route 212 is drawn as a single line and should actually be a double line.
  • the transfer vehicle 211 travels between the two lines, and the vehicle waiting for the red light should stop outside the double line, because the vehicles outside the double line are waiting for the red light when the transfer vehicle 211 crosses the road.
  • Another travel route of the transfer vehicle 211 is a rectangle.
  • the travel route of one transport vehicle 211 is: a ⁇ d ⁇ e ⁇ h ⁇ a; and the travel route of the other transport vehicle 211 is: b ⁇ c ⁇ f ⁇ g ⁇ b.
  • the pedestrian indicator at the intersection is shown as a red light that prohibits pedestrians from passing.
  • the number of transfer vehicles 211 should be determined according to actual conditions.
  • the operation of the transfer vehicle 211 should be determined according to the actual situation, such as the use of a transfer vehicle during peak hours in the morning and evening, and may not be used during off-peak hours.
  • Driving a transfer vehicle is a high-strength work, and if conditions permit, a driver's rest can be set up nearby, such as the driver's rest area 213 set up in FIG.
  • the transfer vehicle can use electric vehicles. If an electric vehicle is used, it is possible to arrange a plurality of vehicles at the intersection, for example, 4 vehicles. Two of them are in operation and the other two are charging. At this time, the vehicle charging area and the driver's rest area are arranged together, and the arrangement of multiple vehicles is also backed up.
  • the “Pedestrian Pedestrian Transfer Car” can be designed to be more unique in shape, bright in color, and convenient for passengers to get on and off. From the perspective of technological development, when the technology of driverless vehicles is mature, the “road crossing pedestrian transfer vehicle” can adopt driverless cars.
  • the traffic separation of the front and rear traffic lights provided by the embodiment of the present invention is also used. Law, the traffic efficiency at the intersection is at least doubled, reducing the waiting time of vehicles to achieve energy saving and emission reduction.
  • the expressway is a special road. In order to achieve high-speed, the expressway is designed as a motor vehicle-only road without pedestrians and traffic lights. Congestion on the expressway From the surface, China's road network size can not meet such a large traffic volume. From a deeper perspective, the intelligent transportation system and the traffic condition information platform cannot meet the needs of highway managers to manage traffic.
  • This embodiment provides a virtual traffic light function for performing flow adjustment on a vehicle entering a highway.
  • three systems are required, and this embodiment requires only two systems: an intelligent in-vehicle terminal system and a system server carried by the driver, and the intelligent traffic signal system is virtual (ie, a virtual traffic light).
  • the theoretical "virtual traffic lights" setting is arbitrary, such as setting one every 20 kilometers on the highway, or setting one every 30 kilometers, or Set a few and so on near the road where congestion often occurs.
  • the Chang (Changchun City) Ji (Jilin City) expressway is 100 kilometers long, and the plan is to set up 6 “virtual traffic lights” for each section of 20 kilometers, numbered 1-6.
  • One entrance is set up at both ends, and the number from Changchun City to Jilin City is gradually increasing.
  • the entrance of the expressway Changchun City is “virtual traffic light 1”, and the “virtual traffic light 2” is 20 kilometers away from the entrance.
  • the highway is a “virtual traffic light 6”.
  • the workflow of the system server is shown in FIG. 13 , and the system server can accurately and accurately calculate the real-time traffic through the “virtual traffic light 1” to the direction of Jilin City and has not passed the “virtual traffic light 2”. How many cars are there.
  • the system server can accurately count in real time how many vehicles in any direction to the direction of Jilin City; how many vehicles in any direction to the direction of Changchun City; system server can accurately count in real time through any one Traffic at the virtual traffic light.
  • These real-time data will help managers master real-time dynamic data and effectively control it. For example, if there is congestion at a certain section of Chang (Changchun City) Ji (Jilin City) Expressway, the administrator can use the broadcast function of the intelligent transportation system to issue traffic information warning to the motor vehicles in the selected road section, and can also control
  • the virtual traffic light "display" is a red light to stop the vehicle driving here "waiting for a red light” (the red light will be displayed on the smart vehicle terminal system carried by the driver).
  • the real-time traffic data of the expressway and the data compared with the historical data can be released through the traffic information platform to facilitate the traveler to carry out line planning.
  • the system and method provided by the embodiments of the present invention establish a "virtual traffic light" on the expressway, so that the manager can accurately grasp the dynamic traffic data in real time, and can take measures to the traffic flow in a targeted manner.
  • the amount of control can be specifically directed to a certain vehicle, which avoids the deficiencies of the prior art. If the ground-sensing coil is used to measure the inaccurate traffic flow, the closed-circuit television system collects the drawbacks that the qualitative data is not convenient for real-time use.
  • the method provided in this embodiment is to set up some traffic nodes ("virtual traffic lights") on the roads that need to be managed, and perform accurate real-time management of the entire roads by counting traffic flow data at nodes or between nodes. This embodiment requires the driver to use the intelligent vehicle terminal system and also needs to update the software as required.
  • This embodiment uses the system and method provided by the embodiments of the present invention to prevent the highway from being closed in foggy weather or haze weather. Because it is not rain or snow, the physical properties such as the friction coefficient of the road are not changed, but the visibility is reduced, or the visibility is reduced to zero. However, by using the intelligent transportation system (ITS) provided by the embodiment of the present invention, the highway can be continuously unblocked. None.
  • ITS intelligent transportation system
  • three systems are required, and this embodiment requires only two systems: an intelligent in-vehicle terminal system and a system server carried by the driver.
  • the driver turns on the intelligent vehicle terminal system and enters the highway system according to the normal process.
  • the distance between the front and the rear is 150-200 meters, and the speed is running at a constant speed (such as 80 km/h). All the vehicles are driving.
  • some virtual traffic lights need to be set up, and the establishment and use of virtual traffic lights is as described in the tenth embodiment.
  • the intelligent vehicle-mounted terminal system displays an electronic map showing the driving route of the vehicle, displaying red and yellow lights, and also showing the distance from the preceding vehicle.
  • the system server will provide real-time accurate statistics, which can control certain vehicles or specific vehicles, broadcast road conditions and driving precautions, and can respond to unexpected events at any time. For example, if a car suddenly breaks down, the first safety measure of the system server is to issue parking information to the N cars behind the car (N is determined after the system test of the embodiment of the present invention), and to the N The car notified the emergency. At the same time, the second safety measure is to activate the virtual traffic light.
  • the intelligent vehicle terminal system By illuminating the red light, the intelligent vehicle terminal system in a certain range of vehicles behind the anchored vehicle lights up red, and the vehicles are notified of the sudden In the event situation, the red light is illuminated by the circumstances of the emergency.
  • the next step is accident handling.
  • the system server will notify the highway manager to intervene manually.
  • the highway manager will contact the nearest rescue vehicle or contact the nearest vehicle behind the anchored vehicle to the anchored vehicle and drag the vehicle to the nearest expressway. Export.
  • the administrator After manually intervening in the incident and processing it, the administrator will enter a command to the system server, which will The virtual traffic lights on the expressway turn green and report the incident handling. In fact, during the incident processing, the system server continuously reports the progress of the incident processing.
  • the Beidou positioning navigation system is required to provide high-precision positioning superior to the meter level.
  • the driver should ensure that the vehicle condition is good and the driving is regulated according to the requirements of the foggy weather.
  • the system and method of the embodiments of the present invention can implement the 20 functions described in the embodiment of the present invention in "the embodiments of the present invention have the following advantages.” Some of these functions have been discussed in some embodiments, and the other three are described in this embodiment.
  • intersection fusion means that the time setting information of the intelligent traffic signal system of the two adjacent intersections is the same, and the traffic signals of the same direction on the same road synchronously display the same signal.
  • the distance between two adjacent intersections is less than 30 meters, it can be set as “road junction fusion”, so that the signal lights are simultaneously on and off.
  • These two intersections are like an intersection in a certain direction, which can greatly improve the "road crossing speed", avoiding that when one intersection is green, the other intersection with the same direction is still red, and the signal lights are not synchronized, which will greatly reduce the two. Traffic efficiency at intersections.
  • the reminding function of the in-vehicle traffic light system avoids the waste of 3 seconds when the green light is on, which is enough to compensate for the time required to drive the distance of 30-50 meters, so the distance is relatively close.
  • the intersection of two adjacent intersections can use "road junction fusion", and the intelligent transportation system (ITS) provided by the embodiment of the present invention can precisely control the implementation of the function.
  • the “Green Light Relay” achieves the function that each road will intersect with several roads to form intersections, and traffic lights will be set at each intersection. When a vehicle runs at a faster speed along this road, whenever When the next intersection is approached, the intersection turns into a green light. This function is called “green light relay”.
  • the "green light relay” technology enables the vehicle to travel at a constant speed at several consecutive intersections, and the vehicle does not need to stop, which improves the traffic speed of the intersection and improves the traffic efficiency of the road network.
  • the shortcoming of the "green light relay” technology is that the efficiency of the opposite direction of the same road is reduced when the efficiency of one direction is increased.
  • the rational application of the "green light relay” technology is to accurately measure the traffic flow of the road through the intelligent transportation system (ITS) provided by the embodiment of the present invention, and this technology can be adopted when the traffic flow of a road has a periodic law.
  • ITS intelligent transportation system
  • the “green light relay” will be implemented from the suburbs to the central area of the city.
  • the “green light relay” is implemented from the central area of the city to the suburbs. The number of intersections that implement the "green light relay” should not be excessive.
  • a road is turned into a one-way line in the morning and evening peak hours.
  • a road is turned into a one-way line from the suburb to the central area of the city.
  • the road becomes a one-way line from the central area of the city to the suburbs.
  • the one-way line is temporarily set, as long as the corresponding settings in the server are changed, it will have no effect on the driver.
  • the above functions can be easily implemented by using the Intelligent Transportation System (ITS) provided by the embodiment of the present invention.
  • ITS Intelligent Transportation System
  • the present invention provides a system for simultaneously displaying the status of a traffic light at a front intersection, including an intelligent traffic signal system 1, an intelligent vehicle terminal system 2, and a system server.
  • the intelligent vehicle terminal system 2 communicates with the system server once, the "time setting information and current state information" of the intelligent traffic signal system 1 at the front intersection is obtained, and the intelligent vehicle terminal system in the vehicle is operated by running the traffic light subroutine.
  • the display on the 2 display simultaneously shows the status of the traffic lights at the front intersection, and the driver can use this information to assist in driving decisions.
  • the intelligent in-vehicle terminal system 2 is clear by its continuous positioning and orientation for its "position and direction", and the electronic map in the intelligent in-vehicle terminal system 2 is clear to the real-time distance from the front intersection.
  • the state of the corresponding traffic light group at the intersection is clear, and the intelligent vehicle-mounted terminal system 2 obtains the real-time speed information of the vehicle by communicating with the vehicle network system.
  • the intelligent vehicle-mounted terminal system 2 includes voice. There are many ways to remind the driver: (at the current speed) can pass the road ahead; the speed will reach 50km/h and will pass the road ahead; if you can't pass the road ahead, please slow down; please start the vehicle through the intersection.
  • the above information is assisted driving information, and the driver needs to determine his driving behavior according to the actual road conditions.
  • the intelligent transportation system provided by the invention will also greatly promote the development and application of automobile unmanned driving technology, and the automobile unmanned driving technology will promote the development and progress of artificial intelligence.
  • the functions of the intelligent vehicle terminal system 2 can be integrated into the vehicle network system.
  • Embodiment 14 is a diagrammatic representation of Embodiment 14:
  • the intelligent transportation system (ITS) provided by the embodiments of the present invention can provide traffic priority for 120 special vehicles such as ambulances, police cars, and fire trucks.
  • SCATS Australian Intelligent Traffic Control System
  • SCATS can also provide priority for special vehicles such as 120 ambulances, police cars, fire trucks, etc., by requesting a special vehicle (such as a fire truck) on the road, by region
  • the control server plans the route according to the start position and the end position input in the request and notifies the requesting special vehicle.
  • the regional control server controls the traffic light of the intersection to turn green. So that the special vehicle waits for at most one red light, and the rest will be all the way to the destination.
  • the system server will provide the “unobstructed evaluation information” of the required intersection.
  • the intelligent vehicle terminal system When there is a congested intersection, the intelligent vehicle terminal system will re-plan the route until the selected intersection All are smooth intersections.
  • the system server is authorized to have a green light according to the priority level of the vehicle that is applying for the priority.
  • the intelligent in-vehicle terminal system carried by all vehicles is capable of performing line planning, and the above steps 1 to 3 are completed, which is an advantage of the embodiment of the present invention.
  • only special vehicles with high priority determined by the system can apply for priority and obtain priority.
  • Ordinary vehicles can also gain priority on special days, such as wedding teams.
  • the system and method of the embodiment of the present invention provides a priority to the wedding convoy: the bride and groom submit an application to the traffic management department, and the wedding team that meets the application requirements will be authorized to have a green light. That is, within a predetermined period of time, priority is granted to a predetermined number of vehicles within a predetermined number of vehicles. Two mobile phones will be authorized for the smart car terminal system, and the two mobile phones will be backed up each other. When the line plan of one mobile phone is executed, the pass priority of the other mobile phone under certain conditions is cancelled. The priority of the wedding team is less than the priority of the special vehicle.
  • the traffic signal system of a city in the prior art is relatively large in scale, and each road intersection needs to set a traffic signal machine. Each road that meets the intersection needs to install a set of traffic lights, and it is necessary for important intersections. Install the countdown card. Because these components are all electronic components, they are exposed to the outdoors for a long time, and they are exposed to the sun and rain every day, so the probability of failure is large.
  • the current problem is that when the traffic signal system at a certain intersection fails, it takes a long time for the maintenance personnel to arrive at the site for maintenance. The reason is that the traffic lights are not displayed. The drivers and pedestrians who first found the car, but there are very few people who are willing to call the traffic manager to report the situation, so the repair time is very long.
  • the intelligent transportation system provided by the embodiment of the invention can solve the problem of delay in discovery and maintenance after the failure of the traffic signal system.
  • the intelligent transportation system comprises three parts: an intelligent traffic signal system, an intelligent vehicle terminal system and a system server.
  • the information exchange between the intelligent traffic signal system and the system server is two-way, and the information exchange between the intelligent vehicle terminal system and the system server is also bidirectional.
  • the intelligent traffic signal system will send back the execution result and other necessary information to the system server after receiving the instruction. If the system server does not receive feedback, it will submit a fault report to the traffic manager so that you can quickly know where the fault is. And send people to repair at the first time.
  • the intelligent traffic signal system feeds back information to the system server on time, but the traffic signal is broken and the system server cannot submit the fault report.
  • the solution is: there is a fault complaint icon on the display of the intelligent vehicle terminal system.
  • the traffic signal of a certain intersection is broken, it is discovered by the driver at the first time. The driver only needs to click the “fault complaint icon”, the intelligent vehicle terminal.
  • the system will submit a fault report to the system server. Because there are many drivers submitting fault reports, based on the number of fault reports, the system server will report the fault report to the traffic manager, so that you can quickly know the fault and send someone to repair at the first time.
  • the intelligent transportation system provided by the embodiment of the invention can solve the problem of information collection and information release, and can realize the targeted release, that is, a specific traffic information is sent to the driver who needs the information.
  • the solution is: an information publishing subroutine will be run in the system server. Most of the collected information is based on geographic location information. When the system server confirms that a car is driving to the road segment, the system server will send the car to the car. Directly post this information. For example, there are 15 dangerous traffic accidents in the front. In the past three years, there have been 15 traffic accidents; the front Kangping Street is the limited road section. Today, the number of vehicles with a trailing number of 0 is forbidden; the front Peony Street is a one-way line from east to west; tomorrow is a car-free day. , please pay attention to the restricted area information; and so on. Because it is a real-time targeted release, it is targeted and efficient. In particular, if a road is under construction, a traffic light that travels or turns toward that road will be displayed as a red light while the prohibited sign is placed at the intersection.
  • the intelligent transportation system provided by the embodiment of the invention can evaluate the smooth condition of each intersection, and the information will be used for the driver's route planning.
  • the evaluation parameters include the following:
  • Vehicles passing through the unit at the intersection of time Num: Vehicles with intelligent vehicle terminal system pass through After the intersection, an application is sent to the system server to stop sending the status information of the traffic signal at the intersection, and the system server will calculate the "number of vehicles passing through the unit time intersection" based on the information.
  • Intersection speed Vn After passing through a junction, the vehicle with the intelligent vehicle terminal system will send an application to the system server, and the application information will also upload the “junction speed” when the vehicle passes the intersection.
  • the system server For example, if the road vehicle density ⁇ is less than 50%, and the unit time intersection vehicle passing quantity Num is close to the number counted from the big data, and the intersection traffic speed Vn is also large, then based on the three numbers, the system server The “unsatisfactory evaluation” of the intersection is excellent.
  • the worst case of the "clear condition evaluation” is that the road vehicle density ⁇ is greater than 100%, and the vehicle passing quantity Num per unit time intersection is smaller than the number counted from the big data, and the value of the intersection traffic speed Vn is small. According to certain standards, the “clear condition evaluation” of each intersection of a city is made.
  • the smart vehicle terminal system of a certain vehicle After the smart vehicle terminal system of a certain vehicle makes the route planning, it will send an application with the road junction to the system server, and the system server will Send the “clear condition evaluation” of the passing intersection to the intelligent vehicle terminal system.
  • the intelligent vehicle-mounted terminal system From the driver's point of view, the intelligent vehicle-mounted terminal system communicates with the system server a plurality of times, and finally determines a suitable line.
  • the line determined by the intelligent vehicle-mounted terminal system avoids the congestion intersection. From the perspective of the traffic manager, the system provided by the embodiment of the present invention can avoid congestion, because once the system server marks the "clear condition evaluation" of some intersections as poor, the vehicle will automatically bypass, reducing the vehicle entering the congestion. The area also avoids congestion.
  • the smooth condition evaluation is automatically completed by the system server according to the evaluation parameters, and will change according to the dynamic changes of the urban traffic flow, describing the real-time status of the urban traffic flow. This evaluation result will be immediately fed back to the driver, which will induce the driver to select the line. The result of the interaction is to achieve active flow regulation and avoid congestion.
  • the peripheral intersection of the forbidden zone is set as the “forbidden intersection” in the system server. Under the ideal state, the driver will actively evade.
  • the peripheral intersection entering the area is set as a “toll intersection”.
  • Hyundai Motor generally adopts an automotive network system represented by a controller area network, an in-vehicle network system, which connects all the electronic components in the vehicle and senses the state of each mechanical and electronic component in real time, centralized control and management.
  • the intelligent in-vehicle terminal system provided by the embodiment of the present invention adopts at least two modes: a mode in which a mobile phone and a dedicated client software are to be used in the initial stage.
  • the disadvantage of using a mobile phone is that the prior art smart phones are relatively power-hungry. Once the driver is not powered, the driver cannot be used, and sometimes the mobile phone is not opened because of forgetting.
  • the final mode of the intelligent vehicle terminal system provided by the embodiment of the present invention still needs a separate device instead of the mobile phone and the APP.
  • a special device is used to open the door and enter the car. When the engine is ignited, the dedicated device is activated. It can be voiced: the vehicle has started, please enter the destination. After the driver enters the departure and destination, the system will plan the route and finally choose a more appropriate route.
  • the intelligent in-vehicle terminal system provided by the embodiment of the present invention sometimes needs to exchange information with the in-vehicle network system in the above two modes.
  • One method is to embed an intelligent vehicle terminal system into an in-vehicle network system and become part of the in-vehicle network system.
  • Another method is to make the intelligent vehicle terminal system and the vehicle network system seamlessly connected, such as SmartDeviceLink developed by Ford, Mirrorlink of CCC of the car networking alliance, CarPlay of Apple's iOS car system, and so on.
  • SmartDeviceLink developed by Ford, Mirrorlink of CCC of the car networking alliance
  • CarPlay of Apple's iOS car system and so on.
  • Google and other automakers and chipmaker Nvidia have formed the Open Automotive Alliance, which will provide a similar system.
  • One of the purposes of information exchange between the intelligent in-vehicle terminal system and the in-vehicle network system in the embodiment of the present invention is to acquire state information of the vehicle, such as driving speed information, red light information such as parking, left turn right steering information, and the like, which are used for Upload the system server.
  • Another purpose of information exchange is to assess driver status and ensure the safety of drivers and others. By accurately capturing the driver's driving action, by comparing with the acquired outside information (for example, the smart vehicle terminal system senses that the driver is waiting for a red light), the Beidou system determines its position. When the green light is on, if the driver moves slowly and is not normal driving behavior, the intelligent vehicle terminal system will upload this information to the system server.
  • the system server will generate a safety report to notify the traffic manager, and the manager will notify the nearest traffic police. deal with.
  • the system server or the intelligent vehicle-mounted terminal system can sense and evaluate the driving behavior of the driver, and reduce or avoid drunk driving and fatigue driving.
  • the system provided by the embodiment of the invention can save a large amount of traffic information based on geographical location and time, and effectively utilizes the information for traffic simulation and optimization through big data analysis, and performs traffic flow adjustment and signal cycle setting of the traffic signal. Saved traffic information can also be output in a format for offline simulation and optimization.
  • the existing intelligent traffic control system can easily reconstruct the intelligent transportation system provided by the embodiment of the invention.
  • Embodiment 20 is a diagrammatic representation of Embodiment 20.
  • This embodiment discusses the security settings of the system provided by the embodiment of the present invention.
  • the system provided by the embodiment of the present invention has the advantages described in the "the embodiment of the present invention has the following advantages" of the present specification.
  • an intelligent transportation system involves three systems: intelligent traffic signal system, intelligent vehicle terminal system and system server. If one of the first two systems fails, the result is partial, and the system server fails. The result is Globally, the loss of a city's transportation system for a minute is huge. In order to ensure the safety of the transportation system, the system provided by the embodiment of the present invention performs security setting.
  • the first security setting the top-level system server.
  • the system provided by the embodiment of the present invention sets a top-level system server as a backup of the system server. If the system server itself fails or is compromised by a network attack, the system server's functionality is transferred to the top-level system server.
  • the top-level system server has the highest privilege, it has backed up some information about the system server, and can implement some or all of the functions of the system server.
  • the second security setting security settings at the intelligent traffic signal system level.
  • the intelligent traffic signal system feeds back the execution result and other necessary information to the system server, and the system server determines whether an intelligent traffic signal system occurs. It is a malfunction.
  • the intelligent traffic signal system will judge whether it is an executable instruction according to the set rules. If the rule is not met, the instruction will not be executed and the device is preset. Send a fault report.
  • the driver will directly feel that the vehicle's intelligent vehicle terminal system and intelligent traffic signal system are out of sync, and will also send a fault report.
  • the traffic manager decides whether to activate the top-level system server based on the number and nature of the fault reports received from the above two channels. Before starting the top-level system server, the intelligent traffic signal system at each intersection will be pre-set according to The mode is running.
  • FIG. 23 shows a circuit diagram of a four-position DIP switch connected to the control unit of the intelligent traffic signal system: pins 1-4 of the DIP switch S1 are respectively connected to the I/O interface of the control unit IC, and are pulled up. One ends of the resistors R1 - R4 are respectively connected to the I/O interface of the control unit IC, and the other ends are connected together and connected to the +5V power supply.
  • Pins 5-8 of DIP switch S1 are connected together and connected to the negative pole of the power supply.
  • the four-digit DIP switches have a total of 16 binary states, each of which can select a program or select a subroutine to run. In some cases, dial the DIP switch to select a program to run, such as the program No. 1111, which is the No. 15 program.
  • the shortcomings are: on the one hand, according to the information of the vehicles in the road network, the decision is made to control the traffic signal state of each intersection to improve the traffic efficiency. the goal of. On the other hand, the driver is completely excluded from the decision of the intelligent traffic control system, so that the driver passively drives according to the decision result (traffic signal state). The information gap between the existing intelligent traffic control system and the driver limits the further improvement of the road network efficiency.
  • the intelligent transportation system provided by the embodiment of the invention comprises three parts: an intelligent traffic signal system, an intelligent vehicle terminal system and a system server. As shown in FIG. 20, the information exchange between the intelligent traffic signal system and the system server is two-way, and the information exchange between the intelligent vehicle-mounted terminal system and the system server is also two-way.
  • the system server has information about all the vehicles in the road network, and it is reasonable for the system server to treat any intersection as a node. Because it is meaningful for a specific motor vehicle to pass the front intersection with the shortest time and the fastest speed.
  • the basic function realized by the intelligent transportation system provided by the embodiment of the present invention is: making a decision on the state of the traffic signal of the intersection according to the vehicle information traveling to a certain intersection and the vehicle information of the relevant intersection, and the decision result (traffic signal light)
  • the status information is sent to the vehicle that is driving to the intersection.
  • the driver of the vehicle traveling to the intersection will make an assisted driving decision based on this information and decide at what speed to drive.
  • the number of system servers should be increased to handle the huge flow of information.
  • the intelligent transportation system provided by the embodiment of the invention needs the support of the communication system, especially the cellular shift Support for mobile communication systems.
  • the number used by the intelligent traffic signal system is uniformly provided by the mobile communication company and the number is externally shielded. If the smart vehicle terminal system uses a dedicated device and requires a large number of SIM cards, it is necessary to study whether or not to use the existing SIM card, and whether the communication company needs to develop a vehicle-specific SIM card.
  • the use of the SIM card for the vehicle has obvious advantages and obvious disadvantages, and the speciality is good and the versatility is poor.
  • the system provided by the embodiment of the present invention is close to the real-time measurement and control system, and the communication system is required to provide communication resources.
  • the 4G network can provide faster.
  • the speed can provide real-time measurement and control services.
  • the communication company can implement hierarchical management for users without affecting ordinary users, and provide high-level services for users with higher real-time requirements.
  • Serving in-vehicle network systems and in-vehicle communication equipment is the next business growth point for mobile communication companies.
  • the hour before work and the hour after work are the time period when the cellular mobile communication network utilization rate is relatively low.
  • pedestrians and vehicles are in the road network - either go to the company or go home. This time period is when the intelligent transportation system provided by the embodiment of the present invention occupies the most communication resources, which just balances the load of the communication network.
  • the intelligent transportation system provided by the embodiment of the invention requires the Beidou navigation satellite to provide a high-precision navigation and positioning service. According to the plan, China will launch a new generation of Beidou navigation satellites by 2015, and the accuracy will be doubled, from the current 10 meters to 2.5 meters. The accuracy is better than 2.5 meters, which is a very attractive technical prospect.
  • the intelligent vehicle-mounted terminal system of the embodiment of the present invention needs to continuously “position” and “orientate” itself. Most of the prior art mobile phones adopt a GPS navigation system, and the positioning speed is relatively slow, and the positioning accuracy is relatively poor, which affects the system of the embodiment of the present invention. Accuracy and efficiency.
  • the system server can more accurately control the traffic lights of the intersections.
  • the application of the Beidou navigation system in the system including the embodiment of the present invention will promote the development of the Beidou navigation system itself, promote the Beidou navigation system to play a greater role in economic development and social life, and also serve the Beidou satellite navigation system around 2020. Achieve a global application and lay a solid foundation for application.
  • the intelligent transportation system provided by the embodiment of the present invention needs an electronic map, which includes coding information of each intersection of the city, direction information of each road concentrated at the intersection, and coding information of the traffic light group corresponding to the road at the front intersection.
  • the electronic map can be re-developed, or an existing electronic map, such as Baidu map, Gaode map, Tencent map, etc., can be used.
  • the information required by the embodiment of the present invention needs to be loaded into the existing electronic map as a module. .
  • the intelligent transportation system provided by the embodiment of the invention can save fuel 5%, improve traffic efficiency by 10%, and reduce pollutant discharge by 15% while improving road network traffic efficiency.
  • the system and method employed in embodiments of the present invention can reduce pollutants from entering the atmosphere in a technical route to treat urban polluted air.
  • the embodiment of the invention adopts the existing technical achievements and improves the "road network traffic speed", thereby achieving the above objectives.
  • the intelligent transportation system provided by the embodiment of the invention can manage a specific vehicle.
  • the intelligent transportation system provided by the embodiment of the invention provides traffic managers with new tools and means for managing traffic.
  • a central control hall can be established, and the information collected at each intersection can be displayed on the large screen in real time, and different information can be displayed by using different symbols and colors. For example, if a road junction is congested, the number of vehicles that have not yet passed through the intersection can be displayed. If the road vehicle density ⁇ of a certain road is greater than 80%, the road will be red.
  • Governing smog, managing urban traffic congestion, energy conservation, and environmental protection are a systematic project that requires a national chess game and a whole nation. It is also necessary to regulate the behavior of drivers and pedestrians from the legislative point of view. For example, for vehicles that wait for a red light, under the warning of “traffic lights in the car”, they can be prepared in advance to start the vehicle at the same time, and the green light starts to pass through the intersection quickly. The yellow light starts to stop quickly and creates a condition for the vehicle in the other direction to quickly pass through the intersection. Pedestrians don't want to smash red lights. Don't cross the road with the zebra crossing. When crossing the big intersection, gather more people to quickly cross the intersection at the beginning of the green light. Of course, when the speed of the vehicle passes through the intersection, the pedestrian red light will be reduced.
  • the intelligent transportation system provided by the embodiment of the invention saves a large amount of traffic information based on geographical location and time, and can effectively optimize and continuously improve the traffic of a city by effectively utilizing the information, and the final result is to establish an efficient intelligence. Traffic network.
  • the system and method provided by the embodiments of the present invention are easy to implement from a technical point of view, and the technical effects have great economic and social benefits only from the perspective of energy saving and emission reduction.
  • the intelligent vehicle-mounted terminal system in the intelligent transportation system provided by the embodiment of the present invention does not affect the operation and display of other softwares during work, because voice broadcasts and reminders are used in most cases.
  • the intelligent transportation system provided by the embodiment of the invention is a dynamic system, and is a living system, which can be used in large cities and small and medium-sized cities, has no civil construction, is convenient to implement, and has high cost performance.
  • the communication modes of any two parts of the intelligent traffic signal system 1, the intelligent vehicle terminal system 2 and the system server 3 include, but are not limited to, several modes provided in the present specification, and others that are not mentioned in the future
  • the manner in which communication occurs can be applied to the systems and methods provided by the present invention.
  • the Start/Stop system automatically detects that the engine is idling and There is no gear; the wheel speed sensor of the anti-locking system shows zero; the electronic battery sensor shows enough energy for the next start.
  • the engine automatically stops rotating.
  • the driver depresses the clutch and can then start the "start stop” and start the engine quickly.
  • the driver is geared, the throttle is stepped on, and the vehicle starts up quickly.
  • the start-stop system works well at lower temperatures and can be activated with a short warm-up process. In general, the technology of the engine start-stop system is mature, but the driver needs to make a judgment to determine whether the engine is turned off at a certain intersection.
  • the intelligent transportation system can provide accurate red light waiting time for the engine management system. If the red light needs to be turned off for 60 seconds, the engine management system will automatically shut down the engine when the condition is met. The engine is automatically started in the first 3 seconds of the arrival of the green light, so that the engine start-stop system will become fully automatic under the support of the intelligent transportation system of the present invention. This avoids requiring the driver to stop and turn off the fire while waiting for the red light at the intersection, which will cause more congestion. Moreover, with the support of the intelligent transportation system of the present invention, the modification of the existing vehicle by the engine start-stop system is simplified.
  • the intelligent transportation system of the invention paves the way for the large-scale application of the engine management system and the vehicle network system developed by some manufacturers.
  • the specification and drawings are to be regarded as illustrative and not restrictive. The scope of the invention is defined by the appended claims.

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Abstract

一种交通信息控制方法、交通信息获取方法、交通信息控制装置、交通信息接收装置以及交通信息指示系统，交通信息控制装置通过网络与至少一个交通信息接收装置连接；控制方法包括：接收交通信息接收装置对实时交通信息的请求；根据请求将实时交通信息发送给接收装置。

Description

交通信息控制、获取方法，交通信息控制、接收装置以及交通信息指示系统 技术领域
本发明实施例涉及一种智能交通系统，进一步，涉及一种同步显示前方路口交通信号灯状态的系统及方法。
背景技术
目前，大气污染是一个全球性的问题。国际卫生组织发表报告称：大气污染致癌，更严重的是：如何治理大气污染是摆在人类面前的一个难题。
各个国家和地区污染空气包含的有害物质成分是不尽相同的。中国不少地区空气质量恶化是雾霾危害加重，雾霾天气现象出现增多。雾霾，是雾和霾的统称，二氧化硫、氮氧化物和可吸入颗粒物这三项是雾霾的主要组成，前两者为气态污染物，最后一项颗粒物才是加重雾霾天气污染的罪魁祸首。它们与雾气结合在一起，让天空瞬间变得灰蒙蒙的。特别是直径小于等于2.5微米的污染物颗粒本身既是一种污染物，又是重金属、多环芳烃等有毒物质的载体。被人吸入肺泡后要么停留在肺泡内，要么进入血液系统，危害巨大，这也是污染空气致癌的原因。
霾的形成主要是空气中悬浮的大量微粒和气象条件共同作用的结果，其成因有三：一是水平方向静风现象增多。城市里大楼越建越高，阻挡和摩擦作用使风流经城区时明显减弱。静风现象增多，不利于大气中悬浮微粒的扩散稀释，容易在城区和近郊区周边积累；二是垂直方向上出现逆温。逆温层好比一个锅盖覆盖在城市上空，这种高空的气温比低空气温更高的逆温现象，使得大气层低空的空气垂直运动受到限制，空气中悬浮微粒难以向高空飘散而被阻滞在低空和近地面。三是空气中悬浮颗粒物的增加。随着城市人口的增长和工业发展、机动车辆猛增，导致污染物排放和悬浮物大量增加，直接导致了能见度降低。
对于污染空气的治理有两个方向：一是减少污染物进入大气，二是使现有大气中的污染物减少。本发明实施例针对的是第一个方向。
近年来我国机动车数量急剧增长，机动车污染日益严重，机动车尾气排放成为我国大中城市空气污染的主要来源，给城市和区域空气质量带来了巨 大压力。有研究报告指出：在实际行驶条件下，机动车在冷启动工况和怠速工况尾气排放VOCs和苯系物浓度要远远高于正常行驶时排放浓度，当行驶速度在40-60km/h时，尾气中VOCs组分和苯系物含量相对较低。中国科学院大气物理所的地区大气重霾污染的形成机理和源解析初步结果显示：北京在2013年1月和2014年2月的雾霾污染事件中，PM2.5在重污染时段的主要来源为机动车、燃煤、工业和扬尘，分别约占42％、28％、13％和12％；而在清洁时段，燃煤占45％，机动车仅占13％。上述数据说明：在现有路网条件下，提高城市机动车的平均通行速度，可以减少污染物排放，进而减少机动车在重污染时段的污染贡献率。
SCATS是一种智能交通控制系统，由澳大利亚新南威尔士州道路交通局(RTA)研究开发，是目前世界上少有的几个先进的城市信号交通控制系统之一。中国的一些城市采用了该系统，如上海、香港、沈阳、苏州和杭州等城市。无论是现有的智能交通控制系统还是现有的单路口信号控制系统，都存在两点不足：一是驾驶者不能实时获得前方路口交通信号灯的状态信息，并利用这些信息辅助驾驶决策；二是一起等红灯的驾驶者不能提前做好准备适时同时启动车辆，快速通过路口，有效利用绿灯时间提高通行效率。
发明内容
本发明实施例的目的之一是克服现有技术的不足，提供一种同步显示前方路口交通信号灯状态的系统，使驾驶者随时了解并利用前方路口的交通信号灯的状态信息辅助驾驶决策，提高整个城市路网的通行效率，提高城市机动车的平均通行速度，达到减少污染物排放的目的。
本发明实施例的目的之二在于提供一种同步显示前方路口交通信号灯状态的方法。车辆通过卫星定位导航模块对自身进行定位和定向，检索到前方路口的编码。车载终端系统向前方路口的智能交通信号灯系统或者系统服务器发送请求，索取前方路口的交通信号灯的时间设定信息和当前的状态信息。车载终端系统对接收到的交通信号灯信息进行解码，将本车行驶方向的交通信号灯的状态显示在屏幕上，以数字、文字、图形或者声音的方式提醒驾驶者提前预知前方路口交通信号灯的状态，辅助驾驶者进行驾驶决策。行驶方向相同的车辆一同等红灯时，车载终端系统提醒所有驾驶者适时同时启动车辆，减少车辆在路口的等待时间。从而提高整个城市路网的通行效率，提高城市机动车的平均通行速度，达到了减少污染物排放的目的。
根据本发明的一个方面，提供了一种交通信息控制方法，方法应用于交 通信息控制装置，交通信息控制装置通过网络与至少一个交通信息接收装置连接；控制方法包括：接收交通信息接收装置对实时交通信息的请求；根据请求将实时交通信息发送给接收装置。
例如，请求包括：实时交通信息对应的特定地理位置信息，根据请求将实时交通信息发送给接收装置的步骤包括：根据特定地理位置信息，确定交通信息接收装置所请求的实时交通信息；获取所请求的对应特定地理位置信息的实时交通信息；将实时交通信息发送给交通信息接收装置。
例如，特定地理位置信息包括：特定路口节点的信息以及该特定路口节点中特定交通指示设备的信息；根据特定地理位置信息，确定交通信息接收装置所请求的交通信息的步骤之前，方法还包括：接收交通信息接收装置的加入节点请求，加入节点请求中包括特定路口节点信息；根据加入节点请求获取交通信息接收装置请求加入的特定路口节点集合；将交通信息接收装置加入到特定路口节点集合中。
例如，接收交通信息接收装置的加入节点请求，加入节点请求中包括特定路口节点信息的步骤之前，方法还包括：根据特定地理位置信息，确定交通信息接收装置可能加入的预定路口节点；将预定路口节点发送给交通信息接收装置。
例如，方法还包括：获取特定路口节点集合中交通信息接收装置的数量、位置或方向信息中的至少一个；根据至少一个信息，对特定路口节点进行交通控制。
例如，根据特定地理位置信息，确定交通信息接收装置所请求的实时交通信息的步骤包括：判断交通信息接收装置是否加入到特定路口节点集合中；当确定交通信息接收装置已经加入到特定路口节点集合时，根据特定路口节点信息以及该特定路口节点中特定交通指示设备的信息确定所请求的实时交通信息。
例如，方法还包括：接收交通信息接收装置的退出特定路口节点集合的退出节点请求；根据退出节点请求，将交通信息接收装置从特定路口节点集合中移除。
例如，交通信息控制装置与多个交通信息子控制单元连接，每个交通信 息子控制单元与一个交通路口节点对应；特定地理位置信息包括：特定路口节点信息以及该特定路口节点中特定交通指示设备的信息；其中，根据特定地理位置信息，确定交通信息接收装置所请求的实时交通信息的步骤包括：根据特定路口节点信息，向特定路口节点对应的交通信息子控制单元发送指令，以指示其返回对应该特定路口的实时交通信息；接收交通信息子控制单元发回的对应该特定路口节点的路口交通信息；将路口交通信息转发给交通信息接收装置，其中，路口交通信息包括：当前时间设定信息以及当前交通路口节点中特定交通指示设备的状态信息。
例如，交通信息控制装置包括多个交通信息子控制单元，每个交通信息子控制单元与一个交通路口节点对应；请求包括：实时交通信息对应的特定交通路口节点信息，其中，根据请求将实时交通信息发送给接收装置的步骤包括：根据请求将特定路口节点的实时交通信息同步发送给交通信息子控制单元以及交通信息接收装置。
根据本发明的另一个方面，提供了一种交通信息获取方法，方法应用于交通信息接收装置，交通信息接收装置通过网络与交通信息控制装置连接；控制方法包括：向交通信息控制装置发送获取实时交通信息的请求；对交通信息控制装置返回的实时交通信息进行显示。
例如，向交通信息控制装置发送获取实时交通信息的请求的步骤包括：获取自身的第一位置信息和第一方向信息；根据第一位置信息以及第一方向信息确定与该第一位置信息以及第一方向信息对应的特定地理位置信息；将特定地理位置信息发送给交通信息控制装置。
例如，特定地理位置信息包括：特定路口节点的信息；方法还包括：根据特定地理位置信息，向交通控制装置发送加入节点请求，以申请加入与该特定地理位置对应的特定路口节点集合；或者，根据交通信息控制装置的加入路口指示，申请加入与加入路口指示对应的特定路口节点集合；当接收到交通控制装置接受其加入特定路口节点的指令时，加入到特定路口节点集合。
例如，方法还包括：将交通信息控制装置返回的实时交通信息所对应的交通信息接收装置的第一位置信息进行保存；再次获取自身当前的第二位置信息和第二方向信息；判断第二位置信息与之前的第一位置信息是否相同；当不同时，向交通信息控制装置发送退出节点请求，以申请退出与该特定交 通路口节点对应的特定交通路口节点集合。
例如，交通信息控制装置与多个交通信息子控制单元连接，每个交通信息子控制单元与一个交通路口节点对应；特定地理位置信息包括：特定路口节点信息以及该特定路口节点中特定交通指示设备的信息；其中，向交通信息控制装置发送获取实时交通信息的请求的步骤包括：向交通信息子控制单元发送请求；对交通信息控制装置返回的实时交通信息进行显示的步骤包括：对从交通信息子控制单元返回的实时交通信息进行显示，其中，实时交通信息包括：当前时间设定信息以及当前交通路口节点中特定交通指示设备的状态信息。
根据本发明的再一个方面，提供了一种交通信息控制装置，交通信息控制装置通过网络与至少一个交通信息接收装置连接；控制装置包括：接收单元，配置来用于接收交通信息接收装置对实时交通信息的请求；发送单元，配置用于根据请求将实时交通信息发送给接收装置。
例如，请求包括：实时交通信息对应的特定地理位置信息，发送单元包括：交通信息确定单元，配置用于根据特定地理位置信息，确定交通信息接收装置所请求的实时交通信息；交通信息获取单元，配置用于获取所请求的对应特定地理位置信息的实时交通信息；交通信息发送单元，配置用于将实时交通信息发送给交通信息接收装置。
例如，交通信息控制装置与多个交通信息子控制单元连接，每个交通信息子控制单元与一个交通路口节点对应；特定地理位置信息包括：特定路口节点信息以及该特定路口节点中特定交通指示设备的信息；其中，交通信息确定单元包括：返回交通信息指令发送单元，配置来用于根据特定路口节点信息，向特定路口节点对应的交通信息子控制单元发送指令，以指示其返回该路口对应的实时交通信息；交通信息接收单元，配置来用于接收交通信息子控制单元发回的对应该特定路口节点的路口交通信息；交通信息转发单元，配置来用于将路口交通信息转发给交通信息接收装置，其中，路口交通信息包括：当前时间设定信息以及当前交通路口节点中特定交通指示设备的状态信息。
根据本发明又一个方面，提供了一种交通信息接收装置，交通信息接收装置通过网络与交通信息控制装置连接，接收装置包括：请求发送单元，配 置来用于向交通信息控制装置发送获取实时交通信息的请求；显示单元，配置来用于对交通信息控制装置返回的实时交通信息进行显示。
例如，请求发送单元包括：第一位置方向获取单元，配置来用于获取自身的第一位置信息和第一方向信息；特定地理位置信息确定单元，配置来用于根据第一位置信息以及第一方向信息确定与该第一位置信息以及第一方向信息对应的特定地理位置信息；特定地理位置信息发送单元，配置来用于将特定地理位置信息发送给交通信息控制装置。
根据本发明的另一个方面，提供了一种交通信息指示系统，包括：交通信息控制装置以及交通信息接收装置。
根据本发明的一个方面，提供了一种同步显示前方路口交通信号灯状态的系统，包括：
智能交通信号灯系统(1)，所述的智能交通信号灯系统(1)安装于每个路口，将本路口交通信号灯的“时间设定信息和当前的状态信息”发送给“系统服务器”，或者接收来自“系统服务器”的命令。接收向本路口行驶的车辆的申请将这辆车所携带的智能车载终端系统加入本路口节点，同时将本路口交通信号灯的“时间设定信息和当前的状态信息”发送给正向本路口行驶的车辆。接收远离本路口的车辆的申请停止发送交通信号灯的“时间设定信息和当前的状态信息”，同时将这辆车所携带的智能车载终端系统从本路口节点移除。
智能车载终端系统(2)，通过卫星定位系统或者卫星定位导航模块对车辆自身进行定位和定向，检索到“前方路口的编码”和“所行驶道路在前方路口处对应的红绿灯组的编码”。向前方路口的所述的智能交通信号灯系统(1)或者“系统服务器”发送申请。接收前方路口的所述的智能交通信号灯系统(1)或者系统服务器发来的交通信号灯的“时间设定信息和当前的状态信息”。对接收到的信息进行解码，根据检索到的“所行驶道路在前方路口处对应的红绿灯组的编码”，运行红绿灯子程序将“所行驶道路在前方路口处对应的红绿灯组”的状态显示在屏幕上。以数字、图形或者声音的方式提醒驾驶者提前预知前方路口交通信号灯的状态，辅助驾驶者进行驾驶决策。当本车远离路口时向所述的智能交通信号灯系统(1)或者“系统服务器”申请停止发送所通过路口交通信号灯的“时间设定信息和当前的状态信息”。所述的智能交通信号灯系 统(1)与所述的智能车载终端系统(2)之间的通讯方式为无线局域网通讯、蜂窝移动通讯网通讯、以及专用网络中的一个。
为达到目的二，根据本发明的另一个方面，提供了一种同步显示前方路口交通信号灯状态的方法，该方法包括：
步骤1：对一个城市路网的全部路口进行编码；对汇聚于每一个路口的各条道路进行编码，将各条道路的编码与各条道路前方对应的交通信号灯组关联到一起。
步骤2：每一个路口的智能交通信号灯系统与系统服务器进行通信。或者一个路口的智能交通信号灯系统将“时间设定信息和当前的状态信息”上传给系统服务器。或者系统服务器将一个路口的“时间设定信息和当前的状态信息”下传给该路口的智能交通信号灯系统。
步骤3：每一辆机动车上的智能车载终端系统根据自身的定位和定向信息，检索出“前方路口的编码”和“所行驶道路在前方路口处对应的红绿灯组的编码”。
步骤4：向系统服务器上传检索到的“前方路口的编码”，索取前方路口的“时间设定信息和当前的状态信息”。
步骤5：接收到系统服务器传回的前方路口的“时间设定信息和当前的状态信息”后，根据步骤3中检索到的“所行驶道路在前方路口处对应的红绿灯组的编码”，运行红绿灯子程序并以数字、图形的方式显示“所行驶道路在前方路口处对应的红绿灯组”的状态，或者以声音的方式提醒驾驶者提前预知“所行驶道路在前方路口处对应的红绿灯组”的状态。
步骤6：重复步骤3，再次检索出“前方路口的编码”和“所行驶道路在前方路口处对应的红绿灯组的编码”。将检索出的“前方路口的编码”与上一次检索出的“前方路口的编码”进行比较，如果相同则重复步骤6，如果不同则向系统服务器报告已经离开该路口的信息并执行步骤4。
例如，还包括系统服务器3，所述的“系统服务器3”的功能设定为：将城市中的每一个路口都作为一个节点来管理。将驶向某一个路口的车辆携带的所述的智能车载终端系统2加入该路口节点。将安装于该路口的所述的智能交通信号灯系统1发送来的“时间设定信息和当前的状态信息”实时转发给驶 向该路口的车辆，或者经过处理后再转发给驶向该路口的车辆。将驶离该路口的车辆携带的所述的智能车载终端系统2从该路口节点移除，并停止发送安装于该路口的所述的智能交通信号灯系统1发送来的“时间设定信息和当前的状态信息”。向每一个路口的所述的智能交通信号灯系统1发送命令。向相关车辆携带的所述的智能车载终端系统2发送提醒信息。评估每一个路口的通行或者拥堵情况，并将评价结果发送给相关车辆。所述的“系统服务器3”可以控制所述的智能交通信号灯系统1和所述的智能车载终端系统2同步显示相同的信息。所述的“系统服务器3”与所述的智能交通信号灯系统1之间的通讯方式为固定电话网通讯、有线电视网通讯、点对点光纤网通讯、TCP/IP网络通讯、无线局域网通讯、蜂窝移动通讯网通讯、以及专用网络中的一个。所述的“系统服务器3”与所述的智能车载终端系统2之间的通讯方式为无线局域网通讯、蜂窝移动通讯网通讯、以及专用网络中的一个。
例如，所述的智能交通信号灯系统1包括现有技术的交通信号机、与所述的交通信号机电连接的红绿灯组。其中，还包括手机(即移动电话)，所述的手机通过有线或者无线与现有技术的交通信号机连接。或者将所述的手机与所述的交通信号机在PCB板层面融合到一起。或者将所述的手机与所述的交通信号机完全融合到一起，利用所述的手机的主控芯片代替所述的交通信号机的主控芯片。或者将所述的手机与所述的交通信号机完全融合到一起，并对软硬件进行适当裁剪，以保证提高可靠性和降低成本。
例如，所述的智能交通信号灯系统1包括现有技术的交通信号机、与所述的交通信号机电连接的红绿灯组，其中，还包括传感器，所述的传感器至少包括下述之一种：光电传感器、压电传感器、红外传感器、重力传感器、重力感应传感器、磁敏式传感器、激光测距仪、摄像头、雷达、超声波传感器、立体摄像头、红外线摄像头，所述的传感器与所述的交通信号机电连接或者与专用的处理器电连接。
例如，所述的智能车载终端系统2为智能手机，所述的智能手机中安装有专用的软件。
例如，所述的智能车载终端系统2为专用装置，所述的专用装置中安装有专用的软件。
例如，所述的路口的编码使用“手机号码编码”或者使用“字母和数字相结合的编码”，所述的字母为Unicode字符。
例如，所述的对汇聚于每一个路口的各条道路命名规则是：地图的方向标方向是上北下南，左西右东。参考方向标方向在整个城市的水平面建立一个坐标系，X轴的正向指向东方，Y轴的正向指向北方，在任意一个路口处都建立一个辅助坐标系，都是X轴的正向指向东方，Y轴的正向指向北方，从X轴正向开始按照逆时针方向计数。与X轴的正向重合的或者夹角最小的为道路1，其余依次为道路2、道路3、…、道路n。所述的汇聚于每一个路口的各条道路是有正方向的，各条道路的正方向即为在本道路上向该路口行驶的机动车的行驶方向。所述的汇聚于每一个路口的每条道路至少包含有两个车道，所述的正方向指向同一个路口的车道采用阿拉伯数字顺序编码。
本发明实施例具有如下优点：(1)采用本发明实施例的系统和方法，机动车可以节省燃油5％，提高通行效率10％，减少污染物排放15％。(2)行驶方向相同的车辆一同等红灯时，智能车载终端系统提醒所有驾驶者适时同时启动车辆，减少了车辆在路口的等待时间，提高了整个城市路网的通行效率，提高了城市机动车的平均通行速度，当平均通行速度达到40-60km/h时，大大减少了污染物排放。(3)采用本发明实施例装置的车辆，将本车行驶方向的交通信号灯的状态显示在屏幕上，以数字、图形或者声音的方式提醒驾驶者提前预知前方路口交通信号灯的状态，辅助驾驶者进行驾驶决策。即，是以较快的速度通过前方路口，还是匀速行驶到路口后等红灯？总之可以从容驾驶避免急刹车。(4)红绿色盲患者也可以考驾照并从容驾驶车辆了，因为本发明实施例装置可以采用文字、图形或者声音的方式提醒驾驶者提前预知前方路口交通信号灯的状态，只需要驾驶者听力正常或者能正常识别“红、绿、黄”三个文字即可。(5)驾驶者在等红灯时可以自由的休息，因为本发明实施例所述的智能车载终端系统会提醒驾驶者何时启动车辆，特别是出租车司机不用左顾右盼通过观察其他方向的绿灯闪动情况预测自己何时启动车辆才能最大化自己的盈利时间。(6)目前在一些重要的路口安装红绿灯倒计时牌受到司机和行人的欢迎，但是投资巨大，管理困难，采用本发明实施例的系统和方法，可以代替红绿灯倒计时牌，将节约很多城市的交通信号灯系统的投资。(7)采用本发明实施例的系统和方法，可以在某些路口设置“虚拟红绿灯”。(8)采用本发明实施例的系统和方法，对于较近的小于50米的两个 路口使用“路口融合技术”可以提高路口的通行效率。(9)采用本发明实施例的系统和方法，对于符合要求的3-5个连续路口使用“绿灯接力技术”可以提高路口的通行效率。(10)采用本发明实施例的系统和方法，所述的“系统服务器”可以精确评估每一个路口的“拥堵情况”，可以辅助驾驶者进行路线选择。(11)采用本发明实施例的系统和方法，所述的“系统服务器”能够综合考虑下一个路口的通行能力来确定前一个路口的通车数量，并对一个区域的交通进行优化。(12)采用本发明实施例的系统和方法，所述的“系统服务器”可以智能地解决拥堵；(13)公共汽车采用本发明实施例的系统和方法，行人可以预先了解距离本站最近的公共汽车的位置和公共汽车到站的预估时间。(14)公共汽车采用本发明实施例的系统和方法，一个城市的交通管理者能够精确了解行人的需求，通过组建“机动公交车队”并临时确定路线和站点来满足行人的需求。(15)采用本发明实施例的系统和方法，雾霾天气高速公路仍然可以正常开放。(16)采用本发明实施例的系统和方法，某个路口的交通信号灯坏了，车辆仍可以在智能车载终端系统的指挥下正常通行。(17)智能车载终端系统具有信息反馈功能，某个路口的交通信号灯坏了，路灯管理部门可以立即确定故障路口位置并及时修复。(18)智能车载终端系统可以感知驾驶者的疲劳驾驶或者精力不集中状态，并将相关信息发送给系统服务器，系统服务器会实时通知附近的交警处理或者通知交通管理者。(19)采用本发明实施例的系统和方法，一辆机动车确定目的地并进入路网后，智能交通系统将对行驶路线和行驶速度等提供辅助驾驶决策。(20)采用本发明实施例的系统和方法建立起来的智能交通系统，将极大地促进汽车无人驾驶技术的发展和应用。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为路口形式示意图。
图2为本发明实施例的对路口和汇聚于路口的道路编码示意图。
图3为本发明实施例的路口处行人检测区域示意图。
图4a、4b为本发明实施例一的智能车载终端系统中的应用软件工作流程图。
图5为本发明实施例的路口处行人检测区域示意图。
图6本发明实施例一的智能交通信号灯系统中的应用软件工作流程图。
图7a、7b为本发明实施例二的智能车载终端系统中的应用软件工作流程图。
图8为本发明实施例二的智能交通信号灯系统中的应用软件工作流程图。
图9为本发明实施例的各系统间信息交换示意图。
图10为本发明实施例一、实施例二的系统间信息交换示意图。
图11为本发明实施例三的各系统间信息交换示意图。
图12a、12b为本发明实施例三的智能车载终端系统的程序流程图。
图13为本发明实施例三的系统服务器中的应用软件的程序流程图。
图14为本发明实施例三的智能交通信号灯系统中的应用软件的程序流程图。
图15为本发明实施例的实施例三中技术方案的信息交换方向示意图。
图16为本发明实施例的实施例四中技术方案的信息交换方向示意图。
图17为本发明实施例五的公交车位置查询示意图。
图18为本发明实施例六的表示行人出行需求的某个城市的一个区域地图。
图19为本发明实施例七的某路口等红灯时车辆数量统计示意图。
图20为本发明实施例八的某路口等红灯时车辆数量统计示意图。
图21为本发明实施例九的大路口处路口行人转运车工作方式示意图。
图22为本发明实施例十五的各系统信息交换方向示意图。
图23为本发明实施例二十的拨码开关与控制单元连接的电路图。
附图标记汇总表示为：1-道路1；2-道路2；3-道路3；4-道路4；5-道路5；31-区域；51-区域；52-传感器安装位置；191-道路；192-斑马线；193-机动车；211-路口行人转运车；212-行车路线；213-司机休息区。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
下面结合附图详细说明本发明实施例的具体实施方案。
为了系统地说明本发明提供的实施例，下面对本发明实施例中使用的一些概念进行解释：
上路网(UpRoad)：机动车启动后驶离停车位，驶入城市道路系统叫“上路网”。
下路网(DownRoad)：机动车驶离城市道路系统并停到某个车位上，叫“下路网”。
路网占用时间：一辆机动车从“上路网”到“下路网”之间的时间差。其间只有经过至少一个路口才能在系统服务器中产生一条记录。
路网占用里程：一辆机动车从“上路网”开始到“下路网”截止所行使过的道路里程数。其间只有经过至少一个路口才能在系统服务器中产生一条记录。
路网车辆总数：某个时刻驶入城市道路系统的车辆的总和，即“上路网”后还没有“下路网”的机动车的总和。
每天路网车辆总数：某一天24小时内“上路网”后又“下路网”的机动车的总和。假设在一个城市的路网中24小时内只有N辆车在行驶，但是系统服务器最终统计的“每天路网车辆总数”一定≥N。
全部车辆路网占用时间(Ttotal)：某一天24小时内“上路网”后又“下路网”的机动车的各自的“路网占用时间”之和。Ttotal可以按照定义精确计算后得到，也可以在所有车辆都使用导航的理想状态下通过大数据(Big Data)模型实时预测出来。
全部车辆路网占用里程(Mtotal)：某一天24小时内“上路网”后又“下路网”的机动车的各自的“路网占用里程”之和。
路网通行速度(V)：全部车辆路网占用里程(Mtotal)/全部车辆路网占用时间(Ttotal)。通过系统服务器中的大数据(Big Data)可以统计某个区域的“路网通行速度”，或者统计某条道路的“路网通行速度”，或者统计某段时间内某个区域或者某条道路的“路网通行速度”。
路口通行速度：行驶方向相同的机动车通过路口中间点时的速度。等红灯时排在第一位的机动车称为首车，首车“路口通行速度”能够表征该路口的顺畅程度和通行能力。路口通行速度由智能车载终端系统上传给系统服务器。
行人最小通过时间：行人以正常速度通过某一个路口所需要的时间，叫做该路口的“行人最小通过时间”。
暂时无行人路口:某一个路口的斑马线的最大边界包围的区域叫“检测区 域”，当“检测区域”内没有行人时，该路口称为暂时无行人路口。如图3所示，狭义上“检测区域”是图3中虚线内的区域31，广义上“检测区域”为图5中虚线内的区域51。
无行人路口：禁止行人通过的路口。
路口级别：城市交通的瓶颈在路口，各个路口的“路口级别”是不一样的，一天24小时内通过某个路口的车辆总数可以表征该路口的“路口级别”，可以据此将一个城市的各个路口分为一级路口、二级路口、三级路口等等，“路口级别”可以通过大数据(Big Data)精确统计获得。
交通信息控制装置，例如可以是本发明实施例中的智能交通信号灯系统或系统服务器或上述二者的组合。
交通信息接收装置，例如可以是本发明实施例中的智能车载终端系统。
交通信息子控制单元，例如可以是本发明实施例中的智能交通信号灯系统。
特定地理位置信息，例如可以是本发明实施例中的电子地图上的某个地理位置、某个交通路口或某个道路等等。
特定路口节点，例如可以是本发明实施例中的某个路口。
特定交通指示设备，例如可以是本发明实施例中某个路口的红绿灯组。
以上是本发明实施例中使用的一些概念，下面是实施例。
实施例一：
一种同步显示前方路口交通信号灯状态的系统，其中，该系统包括：
智能交通信号灯系统1，所述的智能交通信号灯系统1安装于每个路口，接收向本路口行驶的车辆的申请，将本路口交通信号灯的状态信息发送给正向本路口行驶的车辆，接收远离本路口的车辆的申请停止发送交通信号灯的状态信息。
智能车载终端系统2，安装于或者放置在机动车内，通过卫星定位系统或者卫星定位导航模块对车辆自身进行定位和定向。检索到前方路口的编码，向前方路口的所述的智能交通信号灯系统1发送申请。接收前方路口的所述的智能交通信号灯系统1发来的交通信号灯的状态信息，对接收到的信息进行解码，将本车行驶方向的交通信号灯的状态显示在屏幕上，以数字、图形或者声音的方式提醒驾驶者提前预知前方路口交通信号灯的状态，辅助驾驶者进行驾驶决策。当本车远离路口时向所述的智能交通信号灯系统1发送申请，请求停止发送所通过路口交通信号灯的状态信息。
本实施例提供的一种智能交通信号灯系统1，包括现有技术的交通信号 机、与所述的交通信号机电连接的红绿灯组，其中，还包括手机(即移动电话)，所述的手机通过有线或者无线与交通信号机连接。或者将所述的手机与所述的交通信号机融合到一起，利用所述的手机的主控芯片代替所述的交通信号机的主控芯片。
在本实施例中，所述的手机采用智能手机，采用标准的数据线与转换器连接。所述的交通信号机通过串口(或者自带的其他接口)与所述的转换器连接。所述的转换器带有电源为所述的智能手机供电。或者所述的智能手机采用标准的数据线与所述的交通信号机的相应接口直接连接，既实现了两者的互相通信，也实现了使用所述的交通信号机的相应接口为所述的智能手机供电。或者所述的智能手机与所述的交通信号机使用无线通信，但是需要使用标准的数据线为所述的智能手机供电。当智能手机的接口与所述的交通信号机的接口不相同时，转换器的作用是实现了两者之间的信号转换。
从系统的稳定性和可靠性考虑，所述的智能手机仅运行一种实现本发明实施例功能的专用的应用软件，并且所用的号码由蜂窝移动通讯公司统一提供并将号码对外屏蔽。
在本实施例中，可以取消所述的转换器，对交通信号机进行改造或者重新设计，使之带有USB接口或者RS232接口，这样所述的智能手机采用标准的数据线可以与之直接连接。或者使所述的交通信号机带有Wi-Fi模块与所述的智能手机进行通讯。或者使所述的交通信号机带有蓝牙模块等其他无线通信模块与所述的智能手机进行通讯。当使用无线通信时，需要使用标准的数据线为所述的智能手机供电。
更进一步地，将所述的智能手机与所述的交通信号机PCB板融合到一起，将所述的智能手机与所述的交通信号机的各自的芯片、电子元器件、传感器等焊接到一块PCB板上，通过相应的电路设计实现通信接口的电连接。PCB板融合既解决了所述的智能手机与所述的交通信号机通信问题，也解决了所述的智能手机的供电问题。融合的好处是：在满足功能的前提下对软硬件进行适当裁剪，可以提高可靠性，可以降低成本，如现有技术的智能手机的电池、显示屏和外壳都不需要了。
对于本实施例，另一个可行的技术方案是：将所述的智能手机与所述的交通信号机完全融合到一起，利用所述的智能手机的主控芯片代替所述的交通信号机的主控芯片，即：使。所述的交通信号机的功能由所述的智能手机实现。考虑到本技术方案的可靠性，所述的智能手机与所述的交通信号机完全融合的装置应做好电磁兼容设计，可以将所述的智能手机的天线安放到路 口交通信号灯控制箱的外侧较高的位置。
本发明实施例需要对一个城市的所有路口进行编码，编码的方法有多种，最简单的一种编码方法是“自然数编码”，就是按照顺序将路口命名为：路口1，路口2，…，路口n。该种编码方法不便于交通管理者识别，但是对于计算机来说都是一样的，名字仅仅是一个标识符。编程语言对标识符的命名规则有如下两点：(1)标识符包括字母、数字和下划线；(2)标识符的第一位必须是字母或者下划线，不能是数字。在符合上述标识符命名规则的情况下，为方便程序设计，本发明实施例采用字母和数字相结合的方法：对于一个城市总会有很多主干道，将整个城市划分为若干个区域，每个区域命名的字母部分采用与EXCEL表格横向字段一样的命名方法，如A、B、C、…、Z、AA、AB、AC…。在每个小区内，如A区内的路口依次命名为：A1、A2、…、An等等。总之，对一个城市的所有路口命名方法有多种，如采用汉字的命名方法：人民大街与自由大路路口，人民大街与卫星路路口等等。完成路口的编码之后，将所有路口的编码和位置信息存入数据库中，并根据实际路口的相邻位置关系建立编码数据的关联。本实施例中，存有路口编码和位置信息的数据库仅安装于所述的智能车载终端系统2中。在其他实施例中，存有路口编码和位置信息的数据库也安装于系统服务器中或者所述的智能交通信号灯系统1中。本实施例中，每个路口的编码也采用安装于每个路口的所述的智能交通信号灯系统1内置的智能手机的SIM卡号。“手机号码编码”与“字母和数字相结合的编码”共用。需要注意的是所述的字母为Unicode字符。
本实施例中，存有路口编码和位置信息的数据库也可以加载到现有技术的电子地图中，并设计一个编码检索子程序。
本发明实施例所述的路口含义是指道路的交叉口。如图1a所示，城市的路口中绝大多数是十字交叉口。特点是：汇聚于某个路口的四条道路，相邻的两条道路互相垂直，相隔的两条道路共线。图1b所示为“丁字路口”，属于十字交叉口的一个特例。图1c和图1d所示为十字交叉口的一个变异，特点是：道路1和道路3共线，道路2和道路4中至少有一条道路与道路1或者道路3成锐角。图1e所示为星形路口，特点是汇聚的三条道路任意两条都不共线。图1f为环岛路口，特点是汇聚的道路数≥5，有环形路与所有道路连通。本发明实施例规定汇聚于某个路口的各条道路的命名规则是：地图的方向标方向是上北下南，左西右东。参考方向标方向在整个城市的水平面建立一个坐标系，X轴的正向指向东方，Y轴的正向指向北方。在任意一个路口 处都建立一个辅助坐标系，都是X轴的正向指向东方，Y轴的正向指向北方，从X轴正向开始按照逆时针方向计数。即，与X轴的正向重合的或者夹角最小的为道路1，其余依次为道路2、道路3、…、道路n。图1中所示的各种形式路口的示意中，各条道路就是按此规则进行命名的，为了方便在图1中各条道路仅仅标记为1，2，3…、n。本发明实施例规定汇聚于某个路口的各条道路是有正方向的，各条道路的正方向即为在本道路上向该路口行驶的机动车的行驶方向。正方向的一种表示方法是：在路口处该条道路按顺时针方向与X轴的夹角。如图1a所示，道路1与X轴的夹角为0度，道路2与X轴的夹角为90度，道路3与X轴的夹角为180度等等。按照这个规则，图2中的同一条“路”根据机动车行驶方向被分为两部分，相对于路口A2称为道路3，正方向为P1。相对于路口A1称为道路1，正方向为P2。更多的情况下，图2中相对于路口A2的道路3是多车道的，在两车道的情况下，命名规则为31、32，最靠近内侧的车道为31。当道路3为三车道的情况下，命名规则为31、32、33，最靠近内侧的车道为31。在图2中，假设汇聚于路口A2的道路1、道路2、道路3和道路4都是三车道的。命名为：11、12、13、21、22、23、31、32、33、41、42、43，为便于检索提高检索速度，上述顺序使用阿拉伯数字命名为：1、2、3、4、5、6、7、8、9、10、11、12，11对应1，12对应2，13对应3，21对应4，…。
根据上述的路口的编码方法和汇聚于路口的各条道路的命名规则，图2所示的含义是：路口A1有四条道路每条道路都是双向车道，四条道路按逆时针顺序依次命名为：1、2、3、4。同理，路口A2也有四条道路每条道路都是双向车道，四条道路按逆时针顺序依次命名为：1、2、3、4(图2中的同一条“路”根据机动车行驶方向被分为两部分，命名时是对每一部分进行了命名。车道是进行了更进一步地命名)。对汇聚于路口的各条道路命名的目的是将每条道路与该道路前方的红绿灯组关联到一起，一辆机动车在路网中行驶的过程中，通过定位和定向能够确定在哪条道路上行驶和向哪个路口行驶(更进一步地是确定了在哪个车道上行驶，这需要卫星定位系统提供高精度的定位)，还能够确定在前方路口处控制该道路的红绿灯组是哪个，或者确定该车道在前方路口处对应的红绿灯是哪一个。
本发明实施例的一些实施例中需要用到电子地图，现有技术的电子地图已经存储了一个城市的道路等相关信息，车载导航仪根据接收到的GPS信号或者北斗信号并按规定的规则计算可以确定车辆自身的地面位置坐标，再通过一定的算法就可以确定车辆自身在电子地图中某条道路上的位置(此即为 定位)。当确定至少两个位置后，就可以确定行驶方向(此即为定向)。本发明实施例需要将一个城市的所有路口的编码和位置信息加载到电子地图上。一个子程序的功能是根据车载导航仪或者定位导航模块提供的定位和定向信息，使电子地图返回前方路口的编码和行驶道路对应的红绿灯组的编码(或者行驶车道对应的红绿灯的编码)，或者通过某个路口时返回已经通过该路口的“已经通过信息”。
本实施例的智能车载终端系统2采用智能手机并安装专用的能实现本发明实施例所需要功能的应用软件来实现，所述的应用软件实现本发明实施例功能的一种流程图。如图4所示，前提条件是：一是将一个城市的所有路口的编码和位置信息加载到电子地图上，本实施例中的路口编码为手机号码(与“字母和数字相结合的编码”共用，前者为计算机软件使用，后者为交通管理者使用。字母的含义包括汉字。)。显然这些信息存储于智能车载终端系统2中。二是将一个城市的汇聚于每个路口的各条道路的红绿灯组与该道路本身按顺时针方向与X轴正向的夹角相关联或者与该道路相关联，并按照设定的消息格式编辑成一条消息，等待发送给加入该路口节点的机动车，显然这些信息存储于智能交通信号灯系统1中。
如图4a、4b所示，所述的智能车载终端系统2中的应用软件工作流程是：
①主控程序调用子程序1，子程序1返回车载导航仪或者定位导航模块提供的机动车自身的定位和定向信息。定位信息是坐标值，定向信息是角度值。
②主控程序调用子程序2，子程序2为编码检索子程序，使用电子地图信息，输入车辆的定位和定向信息，返回前方路口的编码和行驶道路对应的红绿灯组的编码，前方路口的编码即前方路口的智能交通信号灯系统1中智能手机的手机号。
③主控程序调用子程序3，子程序3为通信子程序，按照设定的消息格式，通过车载智能手机向前方路口发送请求加入该路口节点的信息。
④前方路口的所述的智能交通信号灯系统1的智能手机将发送请求的车辆加入本路口节点，并将本路口的交通信号灯的状态信息以一定的时间间隔(如1秒)发送给向本路口发出请求的车辆。
主控程序接收到前方路口的交通信号灯状态信息后调用子程序4，子程序4为显示子程序，根据自身的定向信息或者获得的行驶道路对应的红绿灯组的编码，将自己前进方向的交通信号灯状态显示在显示屏上，并通过语音播报。如：红灯50秒，红灯40秒，…；语音播报开始时刻由机动车与前方 路口的距离确定并可以由驾驶者设定。
⑤重复上述的步骤①和②。子程序2返回前方路口的编码，将这个编码与前一次获得的编码比较，如果相同则继续步骤⑤；如果不同则执行步骤⑥。
⑥所述的智能车载终端系统2的主控程序将调用子程序3，子程序3为通信子程序，按照设定的消息格式，通过车载智能手机向前方路口发送请求信息，请求停止发送信号灯状态信息。前方路口的所述的智能交通信号灯系统1的智能手机将发送请求的车辆移除本路口节点，停止发送本路口的交通信号灯的状态信息。执行步骤③，这表明本车已经通过了一个路口，正向下一个路口驶去，将获得下一个路口的交通信号灯的状态信息。需要说明的是步骤②中“输入车辆的定位和定向信息”，也可以表述为输入车辆的两个定位信息。
如图6所示，所述的智能交通信号灯系统1中的应用软件工作流程是：
①当定时触发后，主控程序调用子程序1，以一定的时间间隔(如1秒)将本路口节点的交通信号灯的状态信息发送给加入本路口节点的每一辆车。
②当接收到向本路口行驶的车辆发送的请求后，判断该车是否请求加入本路口节点。如果是请求加入本路口节点，则主控程序调用子程序A，将该车的智能车载终端系统加入本路口节点。如果不是请求加入本路口节点，则主控程序调用子程序C，将该车的智能车载终端系统从本路口节点中移除。
③等待或者运行其他子程序。
本实施例中和其他实施例中，所述的智能交通信号灯系统1、所述的智能车载终端系统2和系统服务器之间的通信采用移动通信网提供的短信息服务SMS(Short Message Service)。移动通信网提供的短信息服务属于现有技术在此不做赘述。
采用本实施例的系统和方法，在某一个路口，当有多辆机动车一起等红灯时，每辆车内所述的智能车载终端系统2将同步显示前方路口的前进方向的红灯状态，同时进行语音播报：红灯50秒，红灯40秒，…红灯5秒，并用设定的声音提示准备起车。智能车载终端系统2提醒所有驾驶者适时同时启动车辆，快速通过路口，避免了绿灯开始时浪费的3秒钟。减少了车辆在路口的等待时间，提高了“路口通行速度”，提高了整个城市路网的通行效率，也提高了城市机动车的平均通行速度。当平均通行速度达到40-60km/h时，大大减少了污染物排放。驾驶者在等红灯时可以自由的休息，特别是出租车司机可以不用左顾右盼，通过观察其他方向的绿灯闪动情况预测自己何时启动车辆，才能最大化自己的盈利时间。采用本实施例的系统，司机特别是出 租车司机能够获得必要的休息。白班司机按每天工作10小时计算，大约可以获得一小时的等红灯休息时间。如果一个十字路口的交通信号灯周期为90秒，那么24小时内一个通行方向的绿灯次数是960次(24X60X60÷90＝960次)。每次绿灯开始时浪费3秒钟，共浪费48分钟(3X960＝2880秒＝48分钟)。在早晚高峰时段充分利用绿灯开始时的3秒钟非常重要，可以减少或者避免拥堵。从驾驶者角度看，本实施例实现的是“车内红绿灯”。
实施例二：
实施例一的技术方案占用很多系统资源，因为每一秒钟，某一个路口的智能交通信号灯系统1都会将本路口的交通信号灯的状态信息群发一次，这样也增加了使用者(驾驶者或交通管理者)的通信费用。
本实施例是对实施例一的改进，当有车辆发来请求加入的信息后，前方路口的所述的智能交通信号灯系统1将发送请求的车辆加入本路口节点，并将本路口的交通信号灯的状态信息发送给请求加入的车辆，仅发送一次。
智能车载终端系统2中的应用软件工作流程如图7a、7b所示，智能交通信号灯系统1中的应用软件工作流程如图8所示。
智能车载终端系统2的主控程序将调用子程序5，子程序5为红绿灯子程序(红绿灯子程序的程序流程图和软件实现属于现有技术，在此不做赘述。)。从状态信息中提取出与本车前进方向有关的红绿灯组信息，假设本车的前进方向有三个灯，分别是红灯、绿灯和黄灯。发送来的时间设定是：红灯30秒，绿灯27秒，黄灯3秒。现在显示的是绿灯，已经显示到18秒，每隔一定的时间(如0.2秒)，将现在正在显示的时间减去0.2秒，直至减到零，再显示黄灯，3秒后减到0，再显示红灯，每隔一定的时间(如0.2秒)，将现在正在显示的时间减去0.2秒，直至减到零，如此周而复始。本实施例设定的“每隔一定的时间”是0.2秒，也可以根据实际需要自由设定。
红绿灯子程序运行的过程中，整数秒开始时刻(如17秒、16秒…)作为时间触发主控程序的流程跳转到第⑤步骤：
⑤主控程序接收到“自身红绿灯子程序发来的‘前方路口的状态信息’”后调用子程序4，子程序4为显示子程序，根据自身的定向信息，将自己前进方向的交通信号灯状态显示在显示屏上，并进行语音播报，如：红灯50秒，红灯40秒，…。语音播报开始时刻由机动车与前方路口的距离确定并可以由驾驶者设定。
智能交通信号灯系统1将路口的“时间设定信息和当前的状态信息”只发送一次，大大节约了系统资源。但是，这样可能会影响智能车载终端系统2 与智能交通信号灯系统1的同步精度，一种解决办法是通过增加一次交通信号灯的状态信息发送进行校准。
另外一种影响同步精度的因素是移动通信网的延迟，随着移动通信技术的进步现在的移动通信网响应速度快，稳定性好，可以作为实时测控网使用，但是有时仍会产生延迟。解决的技术方案是利用移动通信网的自动对时功能，使智能交通信号灯系统1和智能车载终端系统2达到时间同步，并在消息中包含发送时刻信息，智能车载终端系统2接收到前方路口的交通信号灯的状态信息后，通过时间比对来修正移动通信网在数据传输中产生的信号延迟。
从实际使用看，智能车载终端系统2显示的本车前进方向的红绿灯状态必然存在误差，而使用者对该误差有一定的容忍度，一般地说相差一秒没有问题。当然本实施例会设计成提前三秒提醒驾驶者启动车辆，对于质量较大的客车或者卡车设计成提前五秒提醒驾驶者启动车辆。提醒时间由使用者设定。
实施例三：
本实施例增加了系统服务器，按照一定的时间间隔发送交通信号灯的状态信息。
一种同步显示前方路口交通信号灯状态的系统，包括智能交通信号灯系统1、智能车载终端系统2。其中，还包括系统服务器，所述的“系统服务器”的功能设定为：将城市中的每一个路口都作为一个节点来管理，将驶向该路口的车辆携带的所述的智能车载终端系统2加入该路口节点，将安装于该路口的所述的智能交通信号灯系统1发送来的状态信息实时转发给驶向该路口的车辆，或者经过处理后再转发给驶向该路口的车辆。将驶离该路口的车辆携带的所述的智能车载终端系统2从该路口节点移除，并停止发送安装于该路口的所述的智能交通信号灯系统1发送来的状态信息。向每一个路口的所述的智能交通信号灯系统1发送命令。向相关车辆携带的所述的智能车载终端系统2发送提醒信息。评估每一个路口的通行或者拥堵情况，并将评价结果发送给相关车辆。所述的“系统服务器”可以控制所述的智能交通信号灯系统1和所述的智能车载终端系统2同步显示相同的信息。
本实施例包括三个系统：智能交通信号灯系统1、智能车载终端系统2和系统服务器(如图9所示)，根据实际需要任意两个系统之间都可以进行信息交换，图9中的箭头方向表示的是信息发送方向。
如图10所示，表示的是智能交通信号灯系统1和智能车载终端系统2之间进行的信息交换，这是实施例一、实施例二描述的技术方案。本实施例 描述的技术方案如图11所示，智能交通信号灯系统1和智能车载终端系统2都分别与系统服务器存在信息交换，但是智能交通信号灯系统1和智能车载终端系统2之间不存在信息交换，显然系统服务器带有移动通信接口和移动通信模块。
如图12a、12b所示，是智能车载终端系统2的程序流程图：
①主控程序调用子程序1，子程序1返回车载导航仪或者定位导航模块提供的机动车自身的定位和定向信息；定位信息是坐标值，定向信息是角度值。
②主控程序调用子程序2，子程序2为编码检索子程序，使用电子地图信息，输入车辆的定位和定向信息，返回前方路口的编码和在前方路口车行方向的交通信号灯组的编码。
③主控程序调用子程序3，子程序3为通信子程序，按照设定的消息格式，通过车载智能手机或者专用装置向系统服务器发送请求加入该路口节点的信息。
④系统服务器将发送请求的车辆加入本路口节点，并将本路口的交通信号灯的状态信息以一定的时间间隔(如1秒)发送给加入本路口节点的车辆。
主控程序接收到系统服务器发来的前方路口的交通信号灯状态信息后调用子程序4，子程序4为显示子程序，根据自身的定向信息或者车行方向的信号灯组的编码，将自己前进方向的交通信号灯状态显示在显示屏上，并进行语音播报，如：红灯50秒，红灯40秒，…。语音播报开始时刻由机动车与前方路口的距离确定并可以由驾驶者设定。
⑤重复上述的步骤①和②，子程序2返回前方路口的编码和在前方路口车行方向的信号灯组的编码，将前方路口的编码与前一次获得的编码比较，如果相同则继续⑤；如果不同则执行步骤⑥。
⑥所述的智能车载终端系统2的主控程序将调用子程序3，子程序3为通信子程序，按照设定的消息格式，通过车载智能手机或者专用装置向系统服务器发送请求信息，请求停止发送交通信号灯状态信息。系统服务器将发送请求的车辆移除本路口节点，停止发送本路口的交通信号灯的状态信息。执行步骤③，这表明本车已经通过了一个路口，正向下一个路口驶去，将获得下一个路口的交通信号灯的状态信息。需要说明的是步骤②中“输入车辆的定位和定向信息”，也可以表述为输入车辆的两个定位信息。
如图13所示，是系统服务器中的应用软件的程序流程图，其工作流程如下：
①(时间触发后)主控程序调用子程序1，以一定的时间间隔(如1秒)将每一个路口节点的交通信号灯的状态信息发送给加入本路口节点的每一辆车。
②等待或者运行其他子程序。
③(事件触发后)接收到信息后判断:是来自智能车载终端系统吗？如果是，跳转执行④，如果否(是来自智能交通信号灯系统)，跳转执行⑤。
④进一步判断：该智能车载终端系统是请求加入某一个路口节点吗？如果是，跳转执行⑥，如果否，跳转执行⑦。
⑤调用子程序D：将某个智能交通信号灯系统发来的状态信息与该路口节点关联。
⑥调用子程序A：将该车的智能车载终端系统加入请求加入的路口节点。
⑦调用子程序C：将该车的智能车载终端系统从某一个路口节点中移除。
如图14所示，是智能交通信号灯系统中的应用软件的程序流程图，其工作流程如下：
①(时间触发后)主控程序调用子程序1，以一定的时间间隔(如1秒)将本路口节点的交通信号灯的状态信息发送给系统服务器。
②等待或者运行其他子程序。
③(事件触发后)主控程序调用子程序1，以一定的时间间隔(如1秒)将本路口节点的交通信号灯的状态信息发送给系统服务器。
本实施例同实施例一和实施例二比较增加了系统服务器。系统服务器可以对一个城市的全部路口的智能交通信号灯系统1、一个城市的路网中的全部智能车载终端系统2进行统一管理。如果一辆车准备完成驾驶者的一个任务，从“上路网”到“下路网”这段时间内，智能车载终端系统2会通过系统服务器获得前方路口的交通信号灯的状态信息，通过解码后将行使方向的交通信号灯的状态显示在显示器上，“车内红绿灯”的状态将辅助驾驶者进行驾驶决策。等红灯时智能车载终端系统2会提醒所有驾驶者适时同时启动车辆，快速通过路口，避免了绿灯开始时浪费的3秒钟，减少了车辆在路口的等待时间，提高了“路口通行速度”，提高了整个城市路网的通行效率。“车内红绿灯”的语音播报功能使红绿色盲患者也可以自如地驾驶车辆。本实施例能够实现本说明书中“本发明实施例具有如下优点”中列举的20项功能。
实施例四：
实施例三的技术方案：每隔一定的时间(如一秒钟)，每一个路口的智能交通信号灯系统1都会将自身交通信号灯的状态信息发送给系统服务器。每 隔一定的时间(如一秒钟)，系统服务器都会将每一个路口节点的交通信号灯的状态信息发送给加入本路口节点的每一辆车。这种模式占用很多系统资源，也增加了使用者(驾驶者或交通管理者)的通信费用。
实际上，实施例三中技术方案的信息交换方向如图15所示。智能交通信号灯系统1与系统服务器之间的信息交换是单向的，系统服务器与智能车载终端系统2之间的信息交换是双向的。本实施例是对实施例三的改进，本技术方案中的信息交换方向如图16所示。
现有技术的智能交通系统(ITS)或者单路口交通信号机，红绿灯程序(或者红绿灯子程序)都运行在安装于路口的交通信号机内，并且红绿灯子程序的程序流程图和软件实现属于公知技术。本实施例中，一个城市的所有路口的红绿灯控制程序运行在系统服务器中，同步地在智能交通信号灯系统1和智能车载终端系统2中运行着各自的与系统服务器中相同的红绿灯控制程序。即：系统服务器中的任何一个路口的红绿灯的“时间设定信息(包括周期、绿信比、相位差等)和当前的状态信息”将同步发送到位于任何一个路口的智能交通信号灯系统1和申请加入该路口节点的任何一辆车的智能车载终端系统2中。本实施例描述到这里可以看出：从系统服务器的角度看，智能交通信号灯系统1和智能车载终端系统2的功能是一样的，只不过智能交通信号灯系统1控制着所在路口的红绿灯状态，而智能车载终端系统2或者在智能手机的显示屏上显示前方路口的红绿灯状态，或者在仪表板的显示屏上显示前方路口的红绿灯状态，或者在本发明实施例提供的“车内红绿灯”上显示前方路口的红绿灯状态。
例如：如图2所示，一辆车刚经过A1路口正向A2路口驶去，智能车载终端系统2通过车载智能手机向系统服务器发送请求加入A2路口节点的信息。系统服务器发送来了A2路口的交通信号灯的“时间设定信息和当前的状态信息”，经过解码，本车前进方向的红绿灯时间设定是：红灯30秒，绿灯27秒，黄灯3秒，现在显示的是绿灯，已经显示到18秒。智能车载终端系统2调用红绿灯子程序，每隔一定的时间(如1秒)，将现在正在显示的时间减去1秒，直至减到零，再显示黄灯，3秒后减到0，再显示红灯，每隔一定的时间(如1秒)，将现在正在显示的时间减去1秒，直至减到零，如此周而复始。本实施例设定的“每隔一定的时间”是1秒，也可以根据实际需要自由设定。红绿灯子程序运行的过程中，到了整秒时刻(如17秒、16秒等)，主控程序会调用子程序4，子程序4为显示子程序，将本车前进方向的交通信号灯状态显示在显示屏上，并通过语音播报，如：红灯50秒，红灯40秒，…。 语音播报开始时刻由机动车与前方路口的距离确定并可以由驾驶者设定。
显然，位于A2路口的智能交通信号灯系统1中运行着同样的程序，并控制着安装于路口的红绿灯显示着同样的状态。对于A2路口，只要系统服务器没有发来最新的“时间设定信息和当前的状态信息”，A2路口的智能交通信号灯系统1将按部就班地、周而复始的运行着上一次的控制参数，参数包括时间设定信息和某一时刻的实时状态信息。
为确保稳定性和安全性，当系统服务器发来“时间设定信息和当前的状态信息”后，智能交通信号灯系统1在执行前需要进行安全确认。一是消息中带有发送的时刻信息，通过与自身的时间系统对比(图16中的三个系统，通过时间校准应达到时间同步。)，差值应小于设定值ε(ε根据实际设定)。二是每个路口都有几种预先设定的信号灯控制模式，系统服务器发来的时间设定信息应是其中的一种。这两种安全确认能够保证所述路口的智能交通信号灯系统1的安全性。
本实施例的技术方案，为优化每一个路口的交通信号灯的控制信号提供了柔性化的解决方案。本实施例在实现本说明书中“本发明实施例具有如下优点”中列举的20项功能的过程中，充分利用了智能交通信号灯系统1和智能车载终端系统2的运算能力，节约了系统服务器的运算资源，同时增加了系统的稳定性和安全性，并且能够最小化驾驶者的通讯费用。
实施例五：
实施例一至四说明的是“一种同步显示前方路口交通信号灯状态的系统及方法”。实施例一和实施例二采用的是两个系统：智能交通信号灯系统1、智能车载终端系统2。而实施例三和实施例四采用的是三个系统：智能交通信号灯系统1、智能车载终端系统2和系统服务器。实际上，实施例三和实施例四的体系结构是一种智能交通系统(ITS)，通过不同的软硬件设计，可以实现很多功能。
本实施例是在上述系统的基础上，实现公交车位置查询。
城市公交车的行驶路线是固定的，公交汽车公司确定行驶路线时有一些原则，其中之一就是市民的出行需求，在满足市民的出行需求方面不仅仅是从始点载运到终点这么简单，他们还要求公交车的行驶速度更快一些，发车密度更大一些。但是，因为现在城市交通越来越拥堵，一般情况下公交车没有专用道路，公交车正点到站很难实现，能够实现始发站和终点站准时发车已经是很高的工作要求了。
目前一些城市的一些线路的公交车上安装了GPS或者北斗导航系统，可 以实时地将公交车的位置信息发送到服务器端，供市民查询，能够确定距离自己最近的公交车在哪里。本发明实施例提供的系统也可以实现公交车位置查询。以实施例三和实施例四提供的系统为基础，如图17所示，当152路公交车(下称152车)按照规定的线路和规定的时间行驶时，总会经过线路上的路口。每经过一个路口152车携带的智能车载终端系统2都会向系统服务器发送请求，以获得系统服务器发回的前方路口的交通信号灯的状态信息，152车利用需要的信息可以实现“车内红绿灯”。当通过这个路口后，152车会再次向系统服务器发送请求，请求停止发送刚通过路口的交通信号灯的状态信息。在这个过程中152车在系统服务器中就留下一条记录：什么时间通过了哪个路口向哪个方向驶去了，每个路口都是行驶线路上的一个节点。如果路人甲准备在上海路站乘坐152车，他使用手机中的专用搜索软件APP，输入“152车”。显示152路所有站点后，选择“上海路站”，后选择距离本站最近的车，点击确认后系统服务器会返回信息。信息中显示：有一辆152车刚经过北京路，行驶方向是终点。有一辆152车刚经过深圳路，行驶方向是始点。系统服务器也会给出距离本站的公里数，或者通过大数据挖掘计算出到达本站的时间。实际上，如果路人甲经常乘坐152路车，他可以根据152路车站牌和返回的信息，会判断出自己要乘坐的152路车现在大约的位置，也可以判断出该车到站的大约时间。专用搜索软件APP也可以检索与公交车线路有关的其他信息，如发车、收车时间，线路上的某一站公交车到站的时刻等信息。
本实施例，为了节约系统服务器的资源，不对公交车线路上的路口以外的位置信息进行处理。
显然，任何一辆机动车从“上路网”开始到“下路网”截止所经过路口的信息都存储在系统服务器中，为保护隐私这些信息只用于大数据分析，不会对外公开。
实施例六：
本发明实施例提供的实际上是一种智能交通系统(ITS)，通过不同的软硬件设计，可以实现很多功能。
本实施例是在上述系统的基础上，精确获得行人的出行需求，并通过建立“机动公交车队”来满足这种需求。
每个城市都开通了很多条公交车线路，每条线路上都分配了很多辆公交车。城市公交车的行驶路线是固定的，公交汽车公司确定行驶路线时有一些原则，其中之一就是市民的出行需求。但是受技术条件限制，现有技术的城 市交通管理系统无法精确实时地获得行人的出行需求，也就不能定量地满足行人的出行需求。事实上，行人流是动态随机变化的，现有技术是无法把握的。
本实施例需要开发专用的手机应用，即专用搜索软件APP。准备乘坐公交车者走到某一站后，打开该手机应用，输入始点站，终点站，还需要输入准备乘坐哪路公交车，按确认后，等待。本发明实施例的系统服务器运行某个子程序，精确地实时地统计出准备乘坐某路公交车(如152路车)的人数和位置分布，如果系统服务器计算出现有公交车无法满足需求，就可以通过公交车管理系统调配“机动公交车队”来满足这种需求。安装在“机动公交车队”的公交车前部的LED屏幕将显示152路。一般地，系统服务器也会将增加公交车的信息通过短信发给准备乘坐152路车的行人。任务完成后，增加的公交车将返回到指定位置待命。这说明“机动公交车队”平时待命时是分布在城市的各个地点的。
系统服务器有时能够指挥“机动公交车队”应对一些特殊情况。如图18所示，是某个城市的一个区域地图。如上所述，当准备乘坐公交车者走到某一站后，打开该手机应用，输入始点站、终点站，并且输入准备乘坐哪路公交车按确认后，系统服务器会运行某个子程序画出出行者需求图，图中用各种符号表示出“出行者始点标记”和“出行者终点标记”。通过这张图，城市交通的管理者可以规划出新的公交车线路，并指挥“机动公交车队”来完成这个任务。同时系统服务器通过短信通知所有使用这款手机应用的人，告知新规划的线路、站点和发车时刻等信息，让出行者提前做好准备。精确、经济、实时是本发明实施例提供的智能交通系统(ITS)的功能。
实施例七：
本发明实施例提供的实际上是一种智能交通系统(ITS)，通过不同的软硬件设计，可以实现很多功能。本实施例根据每个路口的每个方向的实际车辆总数控制红绿灯的绿灯时间。
现有技术的智能交通系统(ITS)或者单路口红绿灯控制系统，所提供的红绿灯控制信号是固定的，或者提供几种控制方案，根据定时进行选择。例如：白天是一种方案，对于十字路口的两个方向的绿灯时间都长一些(能够保证“行人最小通过时间”)，让更多的车快速通过该路口。晚上是另一种方案，对于十字路口的两个方向绿灯时间都短一些(能够保证“行人最小通过时间”)，以适应夜晚人车较少的情况。SCATS(澳大利亚的智能交通控制系统)虽然可以实时测量任一个路口的车流量，但是测量结果不准确。
本发明实施例提供的智能交通系统可以实时精确统计任意一个路口的尚未通过该路口的车辆总数。在实施例一、实施例二中的智能交通信号灯系统1可以统计所在路口的尚未通过本路口的车辆总数(此为模式一)。在实施例三、实施例四中的系统服务器可以统计任意一个路口的尚未通过该路口的车辆总数(此为模式二)。统计的原理是：以模式一为例，如图2、图19所示，当一辆机动车携带的智能车载终端系统2获得前方路口的编码是A1后，会按照设定的消息格式向前方路口发送请求加入该路口节点的信息。智能交通信号灯系统1对于已经加入该路口节点并且尚未申请从该路口节点移除的车辆总数是可以统计的，而且可以统计得十分精确。如图19所示，A1路口的智能交通信号灯系统1可以精确统计向正北方向行驶的车辆总数是M辆；向正南方向行驶的车辆总数是N辆；向正西方向行驶的车辆总数是Q辆；向正东方向行驶的车辆总数是P辆。根据一定的算法，运行某一个子程序，就可以合理安排各个方向的绿灯时间(需要保证“行人最小通过时间”)，使通行效率最大化。模式二的统计原理与模式一相同。
实施例八：
实施例七提供的方法在一定程度上可以大大提高路口的通行效率，但是必须保证“行人最小通过时间”。然而在一些情况下如图20所示，在等红灯时南北方向有车而东西方向是没有车的。或者还有一个极限情况，某个时刻一个十字路口只有一辆车。这时如果该十字路口能够检测出没有行人，那么将车行方向的信号灯改变为绿灯也会提高路网的通行效率。
本实施例提供的一种智能交通信号灯系统，包括现有技术的交通信号机、与所述的交通信号机电连接的红绿灯组，其中，还包括传感器。所述的传感器至少包括下述之一种：光电传感器、压电传感器、红外传感器、重力传感器、重力感应传感器、磁敏式传感器、激光测距仪、摄像头、雷达、超声波传感器、立体摄像头、红外线摄像头，所述的传感器与所述的交通信号机电连接或者与专用的处理器电连接。
如图3所示，行人检测区域只包括斑马线部分，图3中虚线包围的区域31。在图5中行人检测区域包括的范围足够大，是虚线包围的区域51。本实施例采用光电传感器布置在图5中的52所在的四个位置，当没有行人进入区域51时，本路口的所述的智能交通信号灯系统会将本路口定义为“暂时无行人路口”，并将信息发送给系统服务器(在信息/消息格式中有一项用于传送路口状态)。系统服务器根据该路口各个方向的车辆总数，按照一定的算法，运行某一个子程序，通过控制交通信号灯的状态使各个方向的车辆快速通过 该路口，减少等待时间，提高了路口的通行效率。如果某一时刻有行人进入该路口的检测区域了，所述的智能交通信号灯系统会将本路口恢复为常规路口状态，即“有行人路口”，并将本路口状态发送给系统服务器，系统服务器对本路口的交通信号灯的控制方式将保证“行人最小通过时间”。
为保证安全，一个技术方案是应使行人检测区域足够大，使系统服务器具有足够的反应时间，既保证行人的安全，又能够通过控制交通信号灯的状态缩短车辆的等待时间，提高路网的通行效率。另一个技术方案是多种传感器共用，扩大行人检测区域，传感器在路口的安装位置是很多的，如行人信号灯灯柱，交通信号灯灯柱，高清摄像头安装柱等，也可以单独确定合适的安装位置。例如：在现有路口合适的位置安装两部用于行人检测功能的高清摄像头，可以称之为多功能立体摄像头(SMPC),简称立体摄像头，能够获取立体的横在路中的物体和行人，并计算其行进路线。借助两只摄像头可以了解一个路口50米X50米区域内的三维状况，并在总体上了解立体摄像头前方500米以内的环境。需要说明的是在路口布置传感器不仅仅是检测行人，也检测其他移动目标，如骑自行车的人、骑摩托车的人、其他车辆等等。考虑到成本，只能在一些关键路口安装检测行人的传感器，并且根据大数据分析只在一定的时间段内使用。
实施例九：
实施例七提供的技术方案是在路口保证“行人最小通过时间”的情况下，按照系统服务器实际统计的车辆数量和方向，通过控制交通信号灯的状态缩短车辆的等待时间，提高路网的通行效率。这种方式是在路口状态为“有行人路口”情形下实现的。实施例八提供的技术方案是在路口状态为“暂时无行人路口”情形下实现的，因为无需保证“行人最小通过时间”，所以路口的车辆通行效率更高。
中国的每一个中等以上城市(城市人口大于100万的城市)都有几条主干道路，主干道路交汇形成的路口称为大路口，其特点是路面宽阔，车道多，车流量大，是城市的交通枢纽。因为行人从一端走到另一端需要很长时间，所以交通信号灯周期长，车辆需要等待两个以上红灯信号才能通过，所以通过大路口对驾驶者产生一定的心理压力。
为了保证大路口的畅通，城市的交通管理部门实践了很多方法，总的来说根据交通的原则是人车分流，因为人行的速度和车行的速度不匹配，混流的结果是车辆的“路口通行速度”降低，这也是造成大路口拥堵的根源。还因为大路口是城市的交通枢纽，在白天时段特别是早晚高峰时段都有行人通过 路口，所以混流不可避免，拥堵不可避免。现有的人车分流采用的一种方法是修建地下隧道，这种方法的一个难点是因为有地下设施而无法施工。另一种方法是修建过街天桥，这种方法的一个难点是投资巨大，天桥修好后也影响城市的景观。并且上述两种方法有一个共同的不足：有的行人拒绝使用，还是走地面的人行道。
本实施例提供的方法是在大路口处，提供“路口行人转运车”，让准备通过该路口的行人坐到“路口行人转运车”上。这种方法将大路口变成了“无行人路口”，系统服务器按照经过测试过的红绿灯信号周期控制大路口的红绿灯。如果大路口安装了本发明实施例提供的智能交通信号灯系统，并且驾驶者都使用了智能车载终端系统，那么当车行方向的交通信号灯变为绿灯的前几秒，等红灯的车辆在智能车载终端系统的提醒下都会做好准备，当绿灯信号出现的瞬间等红灯的车辆就像公路列车一样快速的通过该大路口。如图21所示，为一个大路口，两个方向都是四车道，该路口的编号为H1。如图21所示在该路口设立8个行人转运站，编号为a-h。图中设定的两辆“路口行人转运车”211的行车路线为环形，行驶路线为：a→b→c→d→e→f→g→h→a。为减少行人的等待时间，安排的两辆转运车等间距发车，沿路线212逆时针方向行驶。在图21中路线212画的是单线，实际上应为双线。转运车211在双线之间行驶，等红灯的车辆应停在双线之外，因为转运车211横穿马路时双线之外的车辆都在等红灯。转运车211的另外一种行驶路线为矩形。如一辆转运车211的行驶路线为：a→d→e→h→a；而另一辆转运车211行驶路线为：b→c→f→g→b。在转运车211运行的过程中，该大路口的行人指示灯显示为禁止行人通过的红灯。转运车211的数量应根据实际情况确定。转运车211的运行应根据实际情况确定，如早晚高峰时段使用转运车，非高峰时段可以不使用。驾驶转运车是一个高体力强度的工作，如果条件允许可以在附近设立驾驶者休息的场所，如图21中设立的司机休息区213。从减排的角度看，转运车可以使用电动车。如果使用电动车，可以在该大路口布置多辆，例如布置4辆。其中的两辆处于运行时，另外的两辆在充电。这时将车辆充电区和司机休息区布置到一起，布置多辆车也是做了备份。为吸引行人乘坐和保证安全，“路口行人转运车”可以设计得造型别致一些，颜色艳丽一些，并方便乘客上下车。从技术发展角度看，当无人驾驶汽车技术成熟时，“路口行人转运车”可以采用无人驾驶汽车。
因为在大路口使用了“路口行人转运车”，实现了人车分流，如果同时也使用了本发明实施例提供的同步显示前方路口交通信号灯状态的系统及方 法，大路口的通行效率至少提高一倍，减少了车辆的等待时间实现了节能减排。
实施例十：
随着城市机动车保有量的增加，很多城市都出现了交通拥堵，甚至在节假日高速公路都出现了堵车现象，而城际高速公路非节假日也可能出现拥堵。
高速公路是比较特殊的道路，为达到高速的目的，将高速公路设计成没有行人、没有红绿灯的机动车专用道路。高速公路出现拥堵从表面看是中国的路网规模还不能满足如此大的车流量。从深层次看是智能交通系统和交通路况信息平台还不能满足高速公路管理者管理交通的需要。
本实施例提供了虚拟红绿灯功能对进入高速公路的车辆进行流量调节。在其他实施例中都需要三个系统，而本实施例仅需要两个系统：由驾驶者携带的智能车载终端系统和系统服务器，智能交通信号灯系统是虚拟的(即虚拟红绿灯)。由高速公路管理者根据需要在某些位置设定，理论上“虚拟红绿灯”的设定是任意的，如在高速公路上每隔20公里设定一个，或者每隔30公里设定一个，或者在经常出现拥堵的路段附近设定若干个等等。例如长(长春市)吉(吉林市)高速公路长100千米，规划为5段每段20千米共设立6个“虚拟红绿灯”，编号为1-6。两端入口处各设立一个，从长春市到吉林市编号逐渐增大。例如：高速公路长春市入口处为“虚拟红绿灯1”，距离入口处20千米处为“虚拟红绿灯2”，…。高速公路吉林市入口处为“虚拟红绿灯6”。智能车载终端系统的工作流程参考图12a、12b所示，系统服务器的工作流程参考图13所示，系统服务器能够实时精确统计通过“虚拟红绿灯1”驶向吉林市方向尚未通过“虚拟红绿灯2”的机动车有多少辆。同理，系统服务器能够实时精确统计出任意一段内驶向吉林市方向的机动车有多少辆；任意一段内驶向长春市方向的机动车有多少辆；系统服务器能够实时精确统计通过任意一个“虚拟红绿灯”处的车流量。这些实时数据将有助于管理者掌握实时动态数据，并进行有效控制。例如：如果长(长春市)吉(吉林市)高速公路某一处出现了拥堵，管理者可以使用本智能交通系统的播报功能，向选定路段内的机动车发布交通信息预警，还可以控制虚拟红绿灯“显示”为红灯使行驶到此处的车辆停车“等红灯”(驾驶者携带的智能车载终端系统上将显示为红灯)。高速公路的实时车流量数据和与历史数据对比的数据可以通过交通路况信息平台发布以利出行者进行线路规划。
使用本发明实施例提供的系统和方法在高速公路上设立“虚拟红绿灯”，可以使管理者实时精确掌握动态交通数据，可以有针对性地采取措施对车流 量进行控制，可以具体指挥到某一辆车，这就避免了现有技术的不足。如采用地感线圈测量车流量不准确，采用闭路电视系统采集的是定性数据不便于实时使用等弊端。实际上，本实施例提供的方法就是在需要管理的道路上设立一些交通节点(“虚拟红绿灯”)，通过统计节点处或者节点间的车流量数据对整个道路进行精确实时管理。本实施例要求驾驶者使用智能车载终端系统也需要按要求更新软件。
实施例十一：
伴随着我国高速公路路网规模、路网范围的不断扩大和延伸，尤其是城市规模的扩展和交通出行量的持续快速增长，高速公路所拥有的高速、高效、安全和大容量的特征正在逐步显现。人们也更多地选择驾驶汽车出行，但是如果返程时遇到雨雪、或者大雾天气高速公路关闭了将是一件非常扫兴的事。
本实施例使用本发明实施例提供的系统和方法，在大雾天气或者雾霾天气使高速公路不关闭。因为不是雨雪天气，道路的摩擦系数等物理性能没有改变，只是能见度降低了，或者能见度降为零了，但是通过采用本发明实施例提供的智能交通系统(ITS)，可以继续保证高速公路畅通无阻。
在本发明实施例的一些实施例中都需要三个系统，而本实施例仅需要两个系统：由驾驶者携带的智能车载终端系统和系统服务器。在雾霾天气，驾驶者打开智能车载终端系统，按照正常的流程进入高速公路系统，前后两车距离150-200米，以一定的速度匀速行驶(如80千米/小时)，全部车辆都行驶在高速公路的中间车道上。为了在雾霾天气高效管理交通，需要设立一些虚拟红绿灯，关于虚拟红绿灯的设立和使用如实施例十所述。所述的智能车载终端系统上显示着电子地图，显示着本车的行驶线路，显示着红黄绿灯，也显示着与前车的距离。系统服务器将提供实时精确地统计数据，可以对某些车或者具体的某一辆车进行控制，可以播报路况和行车注意事项，可以随时应付突发事件。例如：某辆车突然抛锚了，系统服务器的第一项安全措施是向该辆车后面的N辆车发布停车信息(N在本发明实施例的系统测试后确定)，并向所述的N辆车通报突发事件情况。与此同时做的第二项安全措施是启动虚拟红绿灯，通过亮起红灯，使抛锚车辆后面的一定范围内的车辆内的智能车载终端系统都亮起红灯，并向这些车辆通报突发事件情况，红灯亮起时间由突发事故处理情况而定。下一步是事故处理，系统服务器会通知高速公路管理者人工干预，高速公路管理者会联系最近的救援车辆或者联系抛锚车辆后面最近的车辆行驶到抛锚车辆处，将该车拖至最近的高速公路出口。经过人工干预突发事件并处理完毕后，管理员会向系统服务器输入命令，将 高速公路的虚拟红绿灯转为绿灯，并播报突发事件处理情况。实际上，在突发事件处理的过程中，系统服务器会不断地通报突发事件处理进展。
本实施例需要北斗定位导航系统提供优于米级的高精度定位，为了减少突发事故的发生，驾驶者应保证车况良好并按大雾天气要求规范驾驶。
实施例十二：
采用本发明实施例的系统和方法，可以实现本发明实施例在“本发明实施例具有如下优点”中描述的20项功能。其中的一些功能在一些实施例中已经论述了，本实施例介绍其他的三种。
所谓的路口融合是指使距离较近的相邻的两个路口的智能交通信号灯系统的时间设定信息相同，并使同一条道路上的相同方向的红绿灯组同步显示相同的信号。例如：当相邻的两个路口距离小于30米时，可以设定为“路口融合”，做到信号灯同时亮同时灭。这两个路口在某一方向就像一个路口，可以大大提高“路口通行速度”，避免了当一个路口为绿灯时，方向相同的另一个路口还是红灯，信号灯不同步，将大大降低这两个路口的通行效率。当首车的路口通行速度为30千米/小时，通过30米距离需要的时间为：30米÷30000米/小时＝3.6秒。当采用本发明实施例的系统和方法时，车内红绿灯系统的提醒功能避免了绿灯亮时浪费的3秒钟，足以补偿驶过30-50米距离所需要的时间，所以“距离较近的相邻的两个路口”可以使用“路口融合”，并且本发明实施例提供的智能交通系统(ITS)可以精确控制实现该功能。
“绿灯接力”实现的是这样的功能：每一条道路都会同几条道路交汇形成路口，每个路口处会设立红绿灯，当一辆车沿这条道路以较快的速度匀速行驶时，每当接近下一个路口时该路口就变成绿灯，这样的功能就叫“绿灯接力”。“绿灯接力”技术使车辆在连续的几个路口快速匀速行驶，车辆不用停车，提高了路口的通行速度，提高了路网的通行效率。但是，“绿灯接力”技术的缺点是：同一条道路当一个方向通行效率提高时相反的方向通行效率降低。所以，“绿灯接力”技术的合理应用是通过本发明实施例提供的智能交通系统(ITS)精确测算道路的车流量，当一条道路的车流量有周期性规律时，可以采用此技术。例如：早高峰时段，某一条道路上由郊区驶向城市中心区的车辆多，则由郊区向城市中心区方向实行“绿灯接力”。晚高峰时段，该条道路由城市中心区驶向郊区的车辆多，则由城市中心区向郊区方向实行“绿灯接力”。实现“绿灯接力”的路口的数量应该适度不应该过多。
为了更快的引导车流减少“路网占用时间”，在早晚高峰时段将一条道路变成单行线，如早高峰时段将一条道路变成由郊区驶向城市中心区的单行线， 晚高峰时段，将该条道路变成由城市中心区驶向郊区的单行线。即使单行线是临时设定的，只要改变了服务器中的相应设置，对驾驶者就不会产生影响。采用本发明实施例提供的智能交通系统(ITS)可以很容易地实现上述功能。
实施例十三
如图11所示，本发明提供的一种同步显示前方路口交通信号灯状态的系统，包括智能交通信号灯系统1、智能车载终端系统2和系统服务器。智能车载终端系统2与系统服务器进行一次通信之后，将获得前方路口的智能交通信号灯系统1的“时间设定信息和当前的状态信息”，通过运行红绿灯子程序，在车内的智能车载终端系统2的显示屏上同步显示前方路口的红绿灯状态，驾驶者利用这些信息可以辅助驾驶决策。事实上，智能车载终端系统2通过不断地定位和定向对于自身的“位置和方向”是清楚的，通过智能车载终端系统2中的电子地图对于距离前方路口的实时距离是清楚的，对于“所行驶道路在前方路口处对应的红绿灯组”的状态是清楚的，智能车载终端系统2通过与车载网络系统进行通信将获得本车实时速度信息，基于上述信息智能车载终端系统2会用包括语音在内的多种方式提醒驾驶者：(以当前车速)可以通过前方路口；速度达到50km/h将能够通过前方路口；不能通过前方路口请减速行驶；请启动车辆通过路口。上述信息是辅助驾驶信息，驾驶者需要根据实际路况确定自己的驾驶行为。本发明提供的智能交通系统也将极大地促进汽车无人驾驶技术的发展和应用，汽车无人驾驶技术将促进人工智能的发展和进步。智能车载终端系统2的功能可以集成到车载网络系统中。
实施例十四：
本发明实施例提供的智能交通系统(ITS)可以为120救护车、警车、救火车等特种车辆提供通行优先权。
SCATS(澳大利亚的智能交通控制系统)也可以为120救护车、警车、救火车等特种车辆提供通行优先权，方法是由在路上行驶的特种车辆(如某一辆救火车)提出请求，由区域控制服务器根据请求中输入的开始位置、终止位置规划好路线并通知给提出请求的特种车辆，根据特种车辆提供的位置信息，当接近某个路口时，区域控制服务器控制该路口的红绿灯变为绿灯，这样特种车辆最多等一个红灯，其余将是一路绿灯到达目的地。
本发明实施例提供的系统为特种车辆提供通行优先权的方法和流程为：
①由车内携带的智能车载终端系统规划好线路。
②系统服务器会提供所需要经过路口的“畅通评价信息”。
③当有拥堵路口时智能车载终端系统会重新规划线路，直至选择的路口 全部为畅通的路口。
④提出通行优先权申请。
⑤系统服务器根据提出申请的车辆的优先级别，符合优先级别的车辆被授权一路绿灯。
⑥当特种车辆通过后，在系统服务器控制下，所经过路口的智能交通信号灯系统恢复正常，与相邻路口的关联恢复正常。
如上所述：一般说来，所有车辆携带的智能车载终端系统都能够进行线路规划，完成上述的步骤①～③，这是本发明实施例的优点。但是，只有系统确定的优先级别高的特种车辆才能够申请通行优先权并获得通行优先权。
普通车辆在特殊的日子也可以获得通行优先权，例如婚礼车队。本发明实施例的系统和方法向婚礼车队提供通行优先权的流程为：由新郎新娘向交通管理部门提出申请，符合申请要求的婚礼车队将被授权一路绿灯。即，在规定的时间段内，在规定的线路上，在规定的车辆数量内，被授予通行优先权。将有两部手机被授权用于智能车载终端系统，两部手机互为备份，当一部手机的线路规划被执行后，另一部手机被授予的一定条件下的通行优先权被取消。婚礼车队获得的通行优先权小于特种车辆的通行优先权。
实施例十五：
现有技术的一个城市的交通信号灯系统规模都比较大，每一个路口都需要设定一套交通信号机，汇合于该路口的各条道路都需要安装一套红绿灯组，对于重要的路口还需要安装倒计时牌。因为这些部件都是电子部件，长期暴露于室外，天天承受日晒风吹雨淋，所以发生故障的几率较大。目前的问题是当某一个路口的交通信号灯系统出现故障的时候，需要很长时间维修人员才能到达现场进行维修。原因是红绿灯不显示了，最早发现的是开车的司机和行人，但是愿意给交通管理者打电话反馈情况的人很少，所以修复的时间很长。本发明实施例提供的智能交通系统可以解决交通信号灯系统发生故障后发现和维修延迟的问题。
本发明实施例提供的智能交通系统(ITS)包括三部分：智能交通信号灯系统、智能车载终端系统和系统服务器。如图22所示，智能交通信号灯系统与系统服务器之间的信息交换是双向的，智能车载终端系统与系统服务器之间的信息交换也是双向的。为了安全和实现故障检测，当系统服务器向智能交通信号灯系统发布指令后，智能交通信号灯系统接收到指令后，会将执行结果和其他必要的信息反馈给系统服务器。如果系统服务器没有接收到反馈信息，就会向交通管理者提交故障报告，这样就可以快速的知道故障所在 并第一时间派人前去维修。
还有一种情况是智能交通信号灯系统向系统服务器按时反馈了信息，但是交通信号灯坏了，系统服务器是不能提交故障报告的。解决方法是：智能车载终端系统的显示器上有一个故障投诉图标，当某一个路口的交通信号灯坏了，第一时间被驾驶者发现了，驾驶者只要点击一下“故障投诉图标”，智能车载终端系统就会向系统服务器提交一个故障报告。因为会有很多驾驶者提交故障报告，所以根据故障报告数量，系统服务器就会向交通管理者提交故障报告，这样就可以快速的知道故障所在并第一时间派人前去维修。
只要系统服务器工作正常，在极限情况下一个城市的所有交通信号灯都坏了或者停电了，也不会影响机动车的正常行驶，因为在某一种模式下系统服务器控制着所有的交通信号灯，并同步将每一个路口的交通信号灯的状态发送给正向该路口驶来的机动车。在这种极限情况下甚至行人通过没有交通信号灯的路口都没有问题，因为机动车的行驶或者停止就表明了红绿灯的状态。
实施例十六：
随着机动车的增加，城市越来越拥堵。目前的解决办法是增加单行线，减少左转向。有时前方在修路，有时某个路口发生了交通堵塞，有时某个位置发生了交通事故，或者单双号限行等，现有技术情况下这些信息不能及时地通知到所有在路网中行驶的车辆。本发明实施例提供的智能交通系统可以解决信息收集和信息发布的问题，而且可以实现定向发布，即某一个具体的交通信息都发给需要这个信息的驾驶者。
解决办法是：系统服务器中将运行一个信息发布子程序，收集的信息中绝大部分都是基于地理位置的信息，当系统服务器确认某辆车行驶到该路段时，系统服务器将向这辆车定向发布该信息。如：前方是危险路段，近三年已经发生15起交通事故；前方康平街是限号路段，今天尾数是0的车辆禁止驶入；前方牡丹街自东向西为单行线；明天是无车日，请注意限行区域信息；等等。因为是实时定向发布，具有针对性、高效性。特别是，如果某一条道路正在施工，在路口处放置禁行标志的同时，往该条道路行驶或者转向的交通信号灯将显示为红灯。
实施例十七：
本发明实施例提供的智能交通系统可以对每一个路口进行畅通情况评价，这些信息将用于驾驶者的线路规划。评价参数包括以下几个：
单位时间路口车辆通过数量Num：带有智能车载终端系统的车辆通过一 个路口后，会向系统服务器发送一个申请，请求停止发送该路口的交通信号灯的状态信息，系统服务器根据这些信息会统计出“单位时间路口车辆通过数量”。
路口通行速度Vn：带有智能车载终端系统的车辆通过一个路口后，会向系统服务器发送一个申请，申请的信息中也将上传本车通过该路口时的“路口通行速度”。
道路车辆密度Р：如图2所示，A1路口和A2路口之间的距离L是已知的，车辆以一定的速度行驶的过程中占用的道路长度大约为10米，那么道路3的最大容车数量N是确定的(N＝L÷10)，系统服务器可以精确统计出已经通过了A1路口还没有通过A2路口的车辆数M，那么Р＝M÷N。
例如：如果道路车辆密度Р小于50％，而单位时间路口车辆通过数量Num接近从大数据中统计的数字，而路口通行速度Vn的数值也很大，那么基于这三个数字，系统服务器对该路口的“畅通情况评价”是优。“畅通情况评价”最差的情况是道路车辆密度Р大于100％，而单位时间路口车辆通过数量Num小于从大数据中统计的数字，而路口通行速度Vn的数值很小。根据一定的标准做出一个城市的每个路口的“畅通情况评价”，某一辆车的智能车载终端系统做出线路规划后，会向系统服务器发出带有所经过路口的申请，系统服务器会将所经过路口的“畅通情况评价”发给智能车载终端系统。从驾驶者角度看，智能车载终端系统经过多次与系统服务器通信，最终会确定一条比较合适的线路，采用本发明实施例提供的系统，智能车载终端系统确定的线路会避开拥堵路口。从交通管理者角度看，采用本发明实施例提供的系统，可以避免拥堵，因为系统服务器一旦将某些路口的“畅通情况评价”标记为差，那么车辆会自动绕行，减少了车辆进入拥堵区域，也就避免了拥堵。
需要说明的是：畅通情况评价是系统服务器根据评价参数自动完成的，会根据城市交通流的动态变化而变化，描述的是城市交通流的真实实时状态。这种评价结果会立刻反馈给驾驶者，会诱导驾驶者选择线路，相互作用的结果是实现了主动调流，避免了拥堵。
畅通情况评价有两个特殊的应用。一是将禁行区域的外围路口在系统服务器中设定为“禁行路口”，在理想状态下，驾驶者就会主动规避了。二是设定拥堵收费区域后，将进入该区域的外围路口设定为“收费路口”，在完成相关立法后，本发明实施例提供的系统可以实现自动提醒和自动电子收费。
实施例十八：
自2000年以来，随着电子技术的迅猛发展和在汽车上的广泛应用，汽 车电子化程度越来越高。从发动机控制到传动系统控制，从行驶、制动、转向控制到安全保障系统及仪表报警系统，从电源管理到为提高舒适性而做的各种努力，使汽车电子系统形成了一个复杂的大系统。为实现汽车内部各个电子控制系统之间的数据共享和快速传输，在显著降低线束用量的同时，有效提高汽车电子系统的安全性和可靠性。现代汽车普遍采用了以控制器局域网为代表的汽车网络系统——车载网络系统，该系统将车内的所有电子部件连接在一起，实时感知各个机械电子部件的状态，集中控制和管理。
本发明实施例提供的智能车载终端系统至少采用两种模式：在开始阶段将使用手机和专用客户端软件的模式。使用手机的不足是现有技术的智能手机都比较费电，一旦没电驾驶者就不能使用了，而有时也会因为遗忘而不打开手机。本发明实施例提供的智能车载终端系统最终模式还是需要一个单独的装置，代替手机和APP。采用专用的装置，打开车门进入车内，发动机一点火则专用的装置就启动了，可以语音通报：车辆已经启动，请输入目的地。驾驶者输入出发地和目的地后，系统将规划线路，最终选择一条比较合适的路线。
本发明实施例提供的智能车载终端系统在上述两种模式下，有时需要与车载网络系统进行信息交换。一种方法是将智能车载终端系统嵌入到车载网络系统中，成为车载网络系统的一部分。另一种方法是使智能车载终端系统与车载网络系统实现无缝连接，如福特开发的SmartDeviceLink，车联网联盟CCC的Mirrorlink，苹果公司的iOS车载系统CarPlay等等。而谷歌与其他汽车制造商及芯片制造商Nvidia共同组建了“开放汽车联盟”(Open Automotive Alliance)，也将提供类似的系统。
本发明实施例的智能车载终端系统与车载网络系统进行信息交换的目的之一是获取车辆的状态信息，如行驶速度信息、停车等红灯信息、左转向右转向信息等等，这些信息用于上传系统服务器。信息交换的另一个目的是评估驾驶者状态，保证驾驶者和他人的安全。通过精确捕捉驾驶者的驾驶动作，通过与获取的外界信息进行比较(例如，智能车载终端系统感知到驾驶者在等红灯)，通过北斗系统确定自身的位置。当绿灯亮的时候如果驾驶者动作缓慢，不是正常的驾驶行为，智能车载终端系统会将此信息上传系统服务器，系统服务器将产生一个安全报告向交通管理者通报，管理者将通知最近的交通警察处理。
采用本发明实施例提供的系统，系统服务器或者智能车载终端系统可以感知并评估驾驶者的驾驶行为，减少或者避免醉驾和疲劳驾驶。
实施例十九：
无论是现有的智能交通控制系统还是现有的单路口信号控制系统，都不能将每天产生的大量的基于地理位置和时间的交通信息保存起来，并很好的利用已有的交通信息进行交通管理或者改善交通管理。
本发明实施例提供的系统，可以保存大量的基于地理位置和时间的交通信息，并通过大数据分析有效地利用这些信息进行交通模拟和优化，进行车流量调节和交通信号灯的信号周期设定。也可以将保存的交通信息以一定的格式输出，用于离线仿真和优化。
为了实现车内红绿灯的功能，减少驾驶者的心理焦虑，现有的智能交通控制系统可以很方便地改造成本发明实施例提供的智能交通系统。
实施例二十：
本实施例论述的是本发明实施例所提供系统的安全设定。本发明实施例所提供系统具有本说明书的“本发明实施例具有如下优点”中所述及的优点。作为一种智能交通系统涉及三个系统：智能交通信号灯系统、智能车载终端系统和系统服务器，如果前两个系统中的某个设备发生故障其结果是局部的，而系统服务器发生故障其结果是全局的，一个城市的交通系统瘫痪一分钟其损失都是巨大的。为保证交通系统安全，本发明实施例提供的系统进行了安全设定。
第一种安全设定：顶级系统服务器。本发明实施例所提供系统设置了顶级系统服务器，作为系统服务器的备份。如果系统服务器自身发生故障，或者因受到网络攻击而瘫痪了，那么系统服务器的功能将转换到顶级系统服务器上。顶级系统服务器具有最高权限，其上已经备份有系统服务器的一些信息，并能够实现系统服务器的部分或者全部功能。
第二种安全设定：智能交通信号灯系统层面的安全设定。为了安全和实现故障检测，当系统服务器向智能交通信号灯系统发布指令后，智能交通信号灯系统会将执行结果和其他必要的信息反馈给系统服务器，系统服务器据此判断某个智能交通信号灯系统是否发生故障了。事实上，当接收到系统服务器发送的指令后，智能交通信号灯系统会按照设定的规则进行判断是否是可以执行的指令，如果不符合规则该指令将不予执行，并向预先设定的设备发送故障报告。与此同时，驾驶者会直接的感受到本车的智能车载终端系统和智能交通信号灯系统不同步了，也会发送故障报告。交通管理者根据从上述两个渠道接收到的故障报告的数量和性质，决定是否启动顶级系统服务器。在启动顶级系统服务器之前，各个路口的智能交通信号灯系统将根据预先设 定的模式运行。
第三种安全设定：当系统服务器和顶级系统服务器都瘫痪之后，当智能交通信号灯系统也不能按照预先设定的模式运行之后，各个路口的智能交通信号灯系统都设定有手动开关，通过人工拨动手动开关，使之按照现有的单路口信号控制系统运行。如图23所示为一个四位的拨码开关与智能交通信号灯系统的控制单元连接的电路图：拨码开关S1的管脚1-4分别与控制单元IC的I/O接口对应连接，上拉电阻R1-R4的一端分别与控制单元IC的I/O接口对应连接，另一端连接到一起并连接+5V电源。拨码开关S1的管脚5-8连接到一起并连接电源的负极。四位的拨码开关共有16种二进制状态，每一种状态都可以选择一个程序或者选择一个子程序的运行。在某种情况下拨动拨码开关选择一个程序运行即可，如选择1111号程序，这是第15号程序。
实施例二十一：
本实施例是对本发明实施例所提供技术方案的综述。
无论是现有的智能交通控制系统还是现有的单路口信号控制系统，都存在的缺点是：一方面根据路网中车辆的信息进行决策对各个路口的交通信号灯状态进行调控，达到提高通行效率的目的。另一方面又将驾驶者完全排除在智能交通控制系统的决策之外，使驾驶者被动地按照决策结果(交通信号灯状态)去开车。现有的智能交通控制系统和驾驶者之间的信息鸿沟限制了路网通行效率的进一步提高。
本发明实施例提供的智能交通系统(ITS)包括三部分：智能交通信号灯系统、智能车载终端系统和系统服务器。如图20所示，智能交通信号灯系统与系统服务器之间的信息交换是双向的，智能车载终端系统与系统服务器之间的信息交换也是双向的。系统服务器拥有路网中所有车辆的信息，系统服务器将任意一个路口都作为一个节点来处理是合理的。因为对于具体的一辆机动车来说用最短的时间最快的速度通过前方路口才是有意义的。本发明实施例提供的智能交通系统实现的基本功能是：根据向某一个路口行驶的车辆信息和相关路口的车辆信息进行决策对该路口的交通信号灯的状态进行控制，并将决策结果(交通信号灯的状态信息)发送给向该路口行驶的车辆。向该路口行驶的车辆的驾驶者将根据这些信息进行辅助驾驶决策，决定以何种速度驾驶。对于一起等红灯的车辆，可以提前做好准备适时同时启动车辆，快速通过路口，有效利用绿灯时间提高通行效率。对于拥有百万辆以上机动车的大城市，应该增加系统服务器的数量以处理庞大的信息流。
本发明实施例提供的智能交通系统需要通信系统的支持，特别是蜂窝移 动通信系统的支持。智能交通信号灯系统所用的号码由移动通讯公司统一提供并将号码对外屏蔽。如果智能车载终端系统采用专用的设备，更需要大量的SIM卡，这时需要研究是否不采用现有的SIM卡，是否需要通信公司开发车辆专用的SIM卡。采用车辆专用的SIM卡有明显的优点也有明显的缺点，专用性好而通用性差。本发明实施例所提供的系统接近实时测控系统，需要通信系统提供通信资源，从移动通信技术的发展看，现在已经开始了第四代移动通信技术(4G)的推广，4G网络可以提供更快的速度可以提供实时测控服务。在不影响普通用户的情况下通信公司可以对用户实施分级管理，对实时要求比较高的用户提供高级别的服务。为车载网络系统和车载通信设备提供服务是移动通信公司的下一个业务增长点。一般情况下，一天中上班的前一小时和下班的后一小时是蜂窝移动通信网利用率比较低的时间段，这时候行人和车辆都在路网中——要么去公司要么回家。这个时间段是本发明实施例提供的智能交通系统占用通信资源最多的时候，正好平衡通讯网的负荷。
本发明实施例提供的智能交通系统需要北斗导航卫星提供高精度导航定位服务。根据规划，我国将于2015年前发射新一代北斗导航卫星，精度再提高2倍，即由目前的10米提升至2.5米。精度优于2.5米，这是一个非常诱人的技术前景。本发明实施例的智能车载终端系统需要不断地对自身进行“定位”和“定向”，现有技术手机多数采用GPS导航系统，定位速度比较慢，定位精度比较差，影响了本发明实施例系统的精度和效率。如果本发明实施例的智能车载终端系统采用导航定位精度比较高的北斗系统，将使系统服务器对各个路口交通信号灯的调控变得更加精确。包括本发明实施例在内的系统都应用北斗导航系统将促进北斗导航系统自身的发展，促进北斗导航系统在经济发展和社会生活中发挥更大的作用，也为北斗卫星导航系统在2020年前后实现全球覆盖打下坚实的应用基础。
本发明实施例提供的智能交通系统需要电子地图，该电子地图包括一个城市的各个路口的编码信息、汇聚于该路口的各条道路的方向信息和前方路口处行驶道路对应的红绿灯组的编码信息。该电子地图可以重新开发，也可以采用现有的电子地图，如百度地图、高德地图、腾讯地图等，这时需要将本发明实施例需要的信息作为一个模块加载到现有的电子地图上。
本发明实施例提供的智能交通系统，在提高路网通行效率的同时，机动车可以节省燃油5％，提高通行效率10％，减少污染物排放15％。
对于污染空气的治理有两个方向：一是减少污染物进入大气，二是使现 有大气中的污染物减少。在治理城市污染空气的技术路线上，本发明实施例采用的系统和方法能够减少污染物进入大气。本发明实施例采用现有的技术成果，提高了“路网通行速度”，也就实现了上述目标。本发明实施例提供的智能交通系统可以管理到具体的某一辆车。
本发明实施例提供的智能交通系统，为交通管理者提供了管理交通的新的工具和手段。使用本发明实施例提供的智能交通系统的城市，可以建立一个中央控制大厅，将各个路口采集的信息实时显示在大屏幕上，使用不同的符号和颜色显现不同的信息。例如：一个路口拥堵了，可以将向本路口驶来尚未通过该路口的车辆数显示出来，某一条道路的“道路车辆密度Р”大于80％了，那么该条道路就显示为红色。通过上述的实时信息显示，交通管理者将能够直观地实时了解一个城市的交通状态，预测未来发展趋势，提前制定解决方案。
治理雾霾、治理城市交通拥堵、节能、环保是一个系统工程，需要全国上下一盘棋、全民上下一条心。也需要从立法角度规范驾驶者和行人的行为，例如：对于一起等红灯的车辆，在“车内红绿灯”的提醒下可以提前做好准备适时同时启动车辆，绿灯开始时刻快速通过路口，在黄灯开始时刻快速的停车为另一个方向的车辆快速通过路口创造条件。行人不要闯红灯，要走斑马线不要横穿道路，过大路口时多聚集一些人在绿灯开始时刻快速通过路口。当然，当车辆通过路口的速度提高以后，将减少行人闯红灯。
本发明实施例提供的智能交通系统保存了大量的基于地理位置和时间的交通信息，通过有效地利用这些信息可以对一个城市的交通不断地进行优化和持续改进，最终结果是建立一个高效的智能交通网。
本发明实施例提供的系统和方法从技术角度看很容易实现，而技术效果仅仅从节能减排角度考虑都具有较大的经济效益和社会效益。
本发明实施例提供的智能交通系统中的智能车载终端系统在工作时不影响其他软件的运行和显示，因为在绝大多数情况下使用的都是语音播报和提醒。
本发明实施例提供的智能交通系统，是一个动态的系统，是一个活的系统，大城市和中小城市都可以使用，没有土建施工，实施方便、性价比较高。
在此说明书中，本发明已经通过特定的实施例做了描述。但是，在不背离本发明的精神和范畴的情况下还可以做出各种修改和变换。例如：智能交通信号灯系统1、智能车载终端系统2和系统服务器3中的任何两部分的通讯方式，包括但不限于本说明书提供的几种方式，其他未述及的还有将来新 出现的通讯方式都有可能应用于本发明提供的系统和方法中。再例如：有研究报告显示30％的雾霾是汽车等红灯时产生的。所以有的厂家开发了发动机启停系统，其工作原理是，当车辆在路口处等红灯时，驾驶员踩下制动踏板，停车摘挡，这时候Start/Stop系统自动检测：发动机空转且没有挂挡；防锁定系统的车轮转速传感器显示为零；电子电池传感器显示有足够的能量进行下一次启动。满足这三个条件后，发动机自动停止转动。而当信号灯变绿后，驾驶员踩下离合器，随即就可以启动“启动停止器”，并快速地启动发动机。驾驶员挂挡，踩油门，车辆快速启动。在高效的蓄电池技术和相应的发动机管理系统的支持下，启停系统在较低的温度下也能正常工作，只需短暂的预热过程便可激活。总体来说发动机启停系统的技术是成熟的，但是需要驾驶者做出判断在某个路口是否关闭发动机，因为驾驶者不清楚还需要等多长时间，所以要求驾驶者做出判断和操作存在困难。本发明提供的智能交通系统，可以为发动机管理系统提供精确的红灯等待时间，如果法规要求等红灯60秒必须关闭发动机，在满足这个条件的情况下，发动机管理系统会自动关闭发动机，在绿灯到来时刻的前3秒再自动启动发动机，所以说在本发明所述智能交通系统的支撑下，发动机启停系统将变成全自动的。这就避免了在路口等待红灯时要求驾驶者停车熄火，会造成更大拥堵情况的出现。而且在本发明所述智能交通系统的支持下简化了发动机启停系统对现有车辆的改造。本发明所述智能交通系统为一些厂家开发的发动机管理系统和车载网络系统的大规模应用铺平了道路。从以上几点可以看出，说明书和附图应被认为是说明性的而非限制性的。本发明的保护范围由所附的权利要求确定。

Claims (20)

  1. 一种交通信息控制方法，所述方法应用于交通信息控制装置，所述交通信息控制装置通过网络与至少一个交通信息接收装置连接；所述控制方法包括：
    接收所述交通信息接收装置对实时交通信息的请求；
    根据所述请求将所述实时交通信息发送给所述接收装置。
  2. 根据权利要求1所述的交通信息控制方法，其中，所述请求包括：所述实时交通信息对应的特定地理位置信息，所述根据所述请求将所述实时交通信息发送给所述接收装置的步骤包括：
    根据所述特定地理位置信息，确定所述交通信息接收装置所请求的实时交通信息；
    获取所请求的对应特定地理位置信息的所述实时交通信息；
    将所述实时交通信息发送给所述交通信息接收装置。
  3. 根据权利要求2所述的交通信息控制方法，其中，
    所述特定地理位置信息包括：特定路口节点的信息以及该特定路口节点中特定交通指示设备的信息；
    所述根据所述特定地理位置信息，确定所述交通信息接收装置所请求的交通信息的步骤之前，所述方法还包括：
    接收所述交通信息接收装置的加入节点请求，所述加入节点请求中包括所述特定路口节点信息；
    根据所述加入节点请求获取所述交通信息接收装置请求加入的特定路口节点集合；
    将所述交通信息接收装置加入到所述特定路口节点集合中。
  4. 根据权利要求3所述的交通信息控制方法，其中，
    所述接收所述交通信息接收装置的加入节点请求，所述加入节点请求中包括所述特定路口节点信息的步骤之前，所述方法还包括：
    根据所述特定地理位置信息，确定所述交通信息接收装置可能加入的预定路口节点；
    将所述预定路口节点发送给所述交通信息接收装置。
  5. 根据权利要求3所述的交通信息控制方法，所述方法还包括：
    获取所述特定路口节点集合中所述交通信息接收装置的数量、位置或方向信息中的至少一个；
    根据所述至少一个信息，对所述特定路口节点进行交通控制。
  6. 根据权利要求3所述的交通信息控制方法，其中，所述根据所述特定地理位置信息，确定所述交通信息接收装置所请求的实时交通信息的步骤包括：
    判断所述交通信息接收装置是否加入到所述特定路口节点集合中；
    当确定所述交通信息接收装置已经加入到所述特定路口节点集合时，根据所述特定路口节点信息以及该特定路口节点中特定交通指示设备的信息确定所请求的实时交通信息。
  7. 根据权利要求3所述的交通信息控制方法，其中，所述方法还包括：
    接收所述交通信息接收装置的退出所述特定路口节点集合的退出节点请求；
    根据所述退出节点请求，将所述交通信息接收装置从所述特定路口节点集合中移除。
  8. 根据权利要求2-7任一所述的交通信息控制方法，其中，所述交通信息控制装置与多个交通信息子控制单元连接，每个所述交通信息子控制单元与一个交通路口节点对应；所述特定地理位置信息包括：特定路口节点信息以及该特定路口节点中特定交通指示设备的信息；其中，
    所述根据所述特定地理位置信息，确定所述交通信息接收装置所请求的实时交通信息的步骤包括：
    根据所述特定路口节点信息，向所述特定路口节点对应的交通信息子控 制单元发送指令，以指示其返回对应该特定路口的实时交通信息；
    接收所述交通信息子控制单元发回的对应该特定路口节点的路口交通信息；
    将所述路口交通信息转发给所述交通信息接收装置，其中，所述路口交通信息包括：当前时间设定信息以及当前交通路口节点中所述特定交通指示设备的状态信息。
  9. 根据权利要求1-7中任一所述的交通信息控制方法，其中，所述交通信息控制装置包括多个交通信息子控制单元，每个所述交通信息子控制单元与一个交通路口节点对应；所述请求包括：所述实时交通信息对应的特定交通路口节点信息，其中，
    所述根据所述请求将所述实时交通信息发送给所述接收装置的步骤包括：
    根据所述请求将所述特定路口节点的实时交通信息同步发送给所述交通信息子控制单元以及所述交通信息接收装置。
  10. 一种交通信息获取方法，所述方法应用于交通信息接收装置，所述交通信息接收装置通过网络与交通信息控制装置连接；所述控制方法包括：
    向所述交通信息控制装置发送获取实时交通信息的请求；
    对所述交通信息控制装置返回的所述实时交通信息进行显示。
  11. 根据权利要求10所述的获取方法，其中，向所述交通信息控制装置发送获取实时交通信息的请求的步骤包括：
    获取自身的第一位置信息和第一方向信息；
    根据所述第一位置信息以及第一方向信息确定与该第一位置信息以及第一方向信息对应的特定地理位置信息；
    将所述特定地理位置信息发送给所述交通信息控制装置。
  12. 根据权利要求11所述的获取方法，其中，所述特定地理位置信息包括：特定路口节点的信息；所述方法还包括：
    根据所述特定地理位置信息，向所述交通控制装置发送加入节点请求，以申请加入与该特定地理位置对应的特定路口节点集合；
    或者，
    根据所述交通信息控制装置的加入路口指示，申请加入与所述加入路口指示对应的特定路口节点集合；
    当接收到所述交通控制装置接受其加入所述特定路口节点的指令时，加入到所述特定路口节点集合。
  13. 根据权利要求11所述的获取方法，其中，所述方法还包括：
    将所述交通信息控制装置返回的实时交通信息所对应的所述交通信息接收装置的所述第一位置信息进行保存；
    再次获取自身当前的第二位置信息和第二方向信息；
    判断所述第二位置信息与之前的第一位置信息是否相同；
    当不同时，向所述交通信息控制装置发送退出节点请求，以申请退出与该特定交通路口节点对应的特定交通路口节点集合。
  14. 根据权利要求10-13任一所述的交通信息获取方法，其中，所述交通信息控制装置与多个交通信息子控制单元连接，每个所述交通信息子控制单元与一个交通路口节点对应；所述特定地理位置信息包括：特定路口节点信息以及该特定路口节点中特定交通指示设备的信息；其中，
    所述向所述交通信息控制装置发送获取实时交通信息的请求的步骤包括：
    向所述交通信息子控制单元发送所述请求；
    所述对所述交通信息控制装置返回的所述实时交通信息进行显示的步骤包括：
    对从所述交通信息子控制单元返回的所述实时交通信息进行显示，其中，所述实时交通信息包括：当前时间设定信息以及当前交通路口节点中特定交通指示设备的状态信息。
  15. 一种交通信息控制装置，所述交通信息控制装置通过网络与至少一 个交通信息接收装置连接；所述控制装置包括：
    接收单元，配置来用于接收所述交通信息接收装置对实时交通信息的请求；
    发送单元，配置用于根据所述请求将所述实时交通信息发送给所述接收装置。
  16. 根据权利要求15所述的交通信息控制装置，其中，所述请求包括：所述实时交通信息对应的特定地理位置信息，所述发送单元包括：
    交通信息确定单元，配置用于根据所述特定地理位置信息，确定所述交通信息接收装置所请求的实时交通信息；
    交通信息获取单元，配置用于获取所请求的对应特定地理位置信息的所述实时交通信息；
    交通信息发送单元，配置用于将所述实时交通信息发送给所述交通信息接收装置。
  17. 根据权利要求16所述的交通信息控制装置，其中，所述交通信息控制装置与多个交通信息子控制单元连接，每个所述交通信息子控制单元与一个交通路口节点对应；所述特定地理位置信息包括：特定路口节点信息以及该特定路口节点中特定交通指示设备的信息；其中，
    所述交通信息确定单元包括：
    返回交通信息指令发送单元，配置来用于根据所述特定路口节点信息，向所述特定路口节点对应的交通信息子控制单元发送指令，以指示其返回该路口对应的实时交通信息；
    交通信息接收单元，配置来用于接收所述交通信息子控制单元发回的对应该特定路口节点的路口交通信息；
    交通信息转发单元，配置来用于将所述路口交通信息转发给所述交通信息接收装置，其中，所述路口交通信息包括：当前时间设定信息以及当前交通路口节点中所述特定交通指示设备的状态信息。
  18. 一种交通信息接收装置，所述交通信息接收装置通过网络与交通信 息控制装置连接，所述接收装置包括：
    请求发送单元，配置来用于向所述交通信息控制装置发送获取实时交通信息的请求；
    显示单元，配置来用于对所述交通信息控制装置返回的所述实时交通信息进行显示。
  19. 根据权利要求17所述的接收装置，其中，所述请求发送单元包括：
    第一位置方向获取单元，配置来用于获取自身的第一位置信息和第一方向信息；
    特定地理位置信息确定单元，配置来用于根据所述第一位置信息以及第一方向信息确定与该第一位置信息以及第一方向信息对应的特定地理位置信息；
    特定地理位置信息发送单元，配置来用于将所述特定地理位置信息发送给所述交通信息控制装置。
  20. 一种交通信息指示系统，包括：权利要求15-17任一所述的交通信息控制装置以及权利要求18-19任一所述的交通信息接收装置。
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