CN103606270A - Vehicle-road cooperative communication method and system - Google Patents
Vehicle-road cooperative communication method and system Download PDFInfo
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- CN103606270A CN103606270A CN201310615799.0A CN201310615799A CN103606270A CN 103606270 A CN103606270 A CN 103606270A CN 201310615799 A CN201310615799 A CN 201310615799A CN 103606270 A CN103606270 A CN 103606270A
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Abstract
The invention discloses a vehicle-road cooperative communication method and system. The method comprises the steps that a vehicle-mounted device which has wireless communication capacity and can collect vehicle condition information is arranged in each vehicle; a road side system which has wireless and wire communication capacity and can collect road surface information is arranged on two sides of a road; a background system which processes messages comprising the vehicle condition information and the road surface information and sends corresponding processing results; by conducting wireless communication with the road side system, the vehicle-mounted device of each vehicle sends the vehicle condition information of the corresponding vehicle to the road side system and receives the processing results sent by the background system and forwarded by the road side system; by conducting wire communication with the background system, the road side system sends the collected road surface information and the received vehicle condition information to the background system and forwards the received corresponding processing results sent by the background system to the corresponding vehicle-mounted device. According to the vehicle-road cooperative communication method and system, operation and utilization efficiency of a transportation system is improved, and accidents and secondary accidents are prevented to a great degree.
Description
Technical field
The present invention relates to Traffic Systems, particularly a kind of bus or train route collaborative communication method and relevant communication system.
Background technology
Traffic Systems is as an important component part in national economy, for maintaining macroeconomic sound development, guaranteeing the people's quality of life and rationally control ecological environmental pollution all to play a part very important.
In recent years, along with China's fast economic growth and urbanization process are accelerated, urban population and vehicle constantly increase, and China's urban transportation is faced with more and more difficult task, and urban traffic blocking, traffic safety and problem of environmental pollution are subject to people's attention day by day.In order to realize, Traffic Systems is quick, safe, running efficiently, and development intelligent transportation system (Intelligent Transportation System, ITS) is the inevitable direction of Future in China.
With respect to abroad, the research of China's bus or train route coordination technique is started late, and since 2000, national ITS center started to pay close attention to the collaborative field of bus or train route, and corresponding also corresponding expansion of research work.Intelligent automobile safe driving, travel condition of vehicle identification, hi-Fix and navigation, highly reliable information fusion and the core technology such as mutual have substantially been grasped at present, for the research of intelligent bus or train route cooperative system is laid a good foundation.And at present China mainly by intelligent transport technology for electronic charging system without parking (Electronic Toll Collection, ETC), and not for the bus or train route cooperative system of solving urban traffic blocking, traffic safety and problem of environmental pollution.
Summary of the invention
The object of the present invention is to provide a kind of bus or train route collaborative communication method and system, can solve better the problem that intelligent transport technology is applied to bus or train route cooperative system.
According to an aspect of the present invention, provide a kind of bus or train route collaborative communication method, having comprised:
In each car, tool for mounting has wireless communication ability also can gather the car-mounted device of vehicle condition information;
Along road both sides tool for mounting, there is wireless and wire communication ability and can gather the trackside system of information of road surface;
Arrange comprising that the message of vehicle condition information and information of road surface processes and send the background system of respective handling result;
The car-mounted device of each car, by carrying out radio communication with trackside system, sends vehicle condition information separately to trackside system, and receives the result of being sent by background system of trackside system forwards;
Trackside system, by carrying out wire communication with background system, sends to background system by gathered information of road surface and the vehicle condition information receiving, and receives the respective handling result that background system sends, and is transmitted to corresponding car-mounted device.
Preferably, described trackside system comprises a plurality of trackside nodes that keep at a certain distance away along road both sides and settle, its each trackside node and described background system carry out wire communication, carry out wire communication with described car-mounted device, and at least comprise microwave read-write antenna, sensor and server.
Preferably, described car-mounted device at least comprises electronic tag, the double-mode integrated vehicle-mounted type subscriber computer of the Big Dipper/GPS, sensor, gyroscope, whether the real-time detection of trackside node has car to enter its wireless signal overlay area, if car having been detected enters in its wireless signal overlay area, utilize the electronic tag of its microwave read-write antenna and this car to carry out radio communication, thereby obtain the vehicle condition information that this car gathers.
Preferably, also comprise:
The car-mounted device of each car is by carrying out radio communication with trackside system, to trackside system, send vehicle solicited message separately, and receive trackside system forwards by background system, respond described vehicle solicited message and the vehicle response information sent, to make corresponding operation according to described vehicle response information.
Preferably, also comprise:
The car-mounted device of each car is by mutual connection setup car self-organization network, to mutually transmit information needed by car self-organization network.
According to a further aspect in the invention, provide a kind of bus or train route Turbo Detection for Cooperative Communication, having comprised:
That in each car, installs has wireless communication ability and can gather the car-mounted device of vehicle condition information;
Along having of road both sides installation is wireless, also can gather the trackside system of information of road surface with wire communication ability;
To comprising the message of vehicle condition information and information of road surface, process and send the background system of respective handling result;
Wherein, the car-mounted device of each car, by carrying out radio communication with trackside system, sends vehicle condition information separately to trackside system, and receives the result of being sent by background system of trackside system forwards;
Wherein, trackside system, by carrying out wire communication with background system, sends to background system by gathered information of road surface and the vehicle condition information receiving, and receives the respective handling result that background system sends, and is transmitted to corresponding car-mounted device.
Preferably, described trackside system comprises a plurality of trackside nodes that keep at a certain distance away along road both sides and settle, its each trackside node and described background system carry out wire communication, carry out radio communication with described car-mounted device, and at least comprise microwave read-write antenna, sensor and server.
Preferably, described car-mounted device at least comprises electronic tag, the double-mode integrated vehicle-mounted type subscriber computer of the Big Dipper/GPS, sensor, gyroscope, whether the real-time detection of each trackside node has car to enter its wireless signal overlay area, if car having been detected enters in its wireless signal overlay area, utilize the electronic tag of its microwave read-write antenna and this car to carry out radio communication, thereby obtain the vehicle condition information that this car gathers.
Preferably, also comprise:
The car-mounted device of each car is by carrying out radio communication with trackside system, to trackside system, send vehicle solicited message separately, and receive trackside system forwards by background system, respond described vehicle solicited message and the vehicle response information sent, to make corresponding operation according to described vehicle response information.
Preferably, the car-mounted device of each car is by mutual connection setup car self-organization network, to mutually transmit information needed by car self-organization network.
Compared with prior art, beneficial effect of the present invention is:
1, the present invention is by the unified regulation and control of background system, make vehicle learn near the ruuning situation of its vehicle and current condition of road surface, and initiatively send the requests such as lane change, thereby keep the rational speed of a motor vehicle and optimum road, thereby improve the whole speed of a motor vehicle of traffic system, reduce spacing, greatly very high operation and the utilization ratio of traffic system, and avoided to a great extent the generation of accident and second accident;
2, for the traffic administration in city, the management that the present invention is traffic provides a great convenience, and only needs the intelligent control of a background system, has not only saved manpower and materials, has optimized the utilization of road, and more people's life security provides guarantee.
Accompanying drawing explanation
Fig. 1 is the bus or train route collaborative communication method theory diagram that the embodiment of the present invention provides;
Fig. 2 is the bus or train route Turbo Detection for Cooperative Communication applied environment schematic diagram that the embodiment of the present invention provides;
Fig. 3 is the bus or train route communication for coordination process flow diagram that the embodiment of the present invention provides;
Fig. 4 is acquisition process and the transmission flow figure of the vehicle condition information that provides of the embodiment of the present invention;
Fig. 5 is that the roadside data that the embodiment of the present invention provides receives flow process;
Fig. 6 is that the reception collection of the roadside data that provides of the embodiment of the present invention stores and uploads flow process;
Fig. 7 is the reception transmission flow of the background system data that provide of the embodiment of the present invention;
Fig. 8 is the workflow of the background system that provides of the embodiment of the present invention;
Fig. 9 is the DSRC protocol stack model figure that the embodiment of the present invention provides.
Description of reference numerals: 1-trackside system; 2-RSU microwave read-write antenna; 3-server and data backup server; 4-power inverter and large-capacity battery; 5-multiple sensors; 6-background system; 7-communication network; 8-car-mounted device; 9-Windows panel computer; 10-OBU electronic tag; The 11-Big Dipper/gps antenna; The double-mode integrated vehicle-mounted type subscriber computer of the 12-Big Dipper/GPS; 13-power inverter; 14-gyroscope.
Embodiment
Below in conjunction with accompanying drawing, to a preferred embodiment of the present invention will be described in detail, should be appreciated that following illustrated preferred embodiment, only for description and interpretation the present invention, is not intended to limit the present invention.
Fig. 1 is the bus or train route collaborative communication method theory diagram that the embodiment of the present invention provides, and as shown in Figure 1, step comprises:
Step 101: tool for mounting has wireless communication ability also can gather and show the car-mounted device of vehicle condition information in each car; Along road both sides tool for mounting, there is wireless and wire communication ability and can gather the trackside system of information of road surface; Arrange comprising that the message of vehicle condition information and information of road surface processes and send the background system of respective handling result.
In described step 101, described car-mounted device at least comprises electronic tag (board units (On board Unit, OBU) electronic tag), the double-mode integrated vehicle-mounted type subscriber computer of the Big Dipper/GPS, sensor, gyroscope.Wherein, described OBU electronic tag is used for trackside system communication with transceiving data; The double-mode integrated vehicle-mounted type subscriber computer of the described Big Dipper/GPS is for detection of vehicle present speed, position and direction of motion; Described gyroscope is for speed, the acceleration of measuring vehicle, and other sensor is used for measuring other data of vehicle body.In addition, described car-mounted device also comprises power inverter, Windows panel computer etc., wherein, it is 220V the inversion of vehicle 12V battery that described power inverter is used for, be used for as car-mounted device power supply, described Windows panel computer for the treatment of and show vehicle itself and the data message receiving.Described vehicle condition information comprises vehicle present speed, position and the direction of motion that the double-mode integrated vehicle-mounted type subscriber computer of the described Big Dipper/GPS detects, the speed of the vehicle that described gyroscope survey arrives, acceleration, other data of vehicle body that described other sensor measurement arrives.
In described step 101, described trackside system comprises a plurality of trackside nodes that keep at a certain distance away along road both sides and settle, its each trackside node and described background system carry out wire communication, carry out radio communication with described car-mounted device, and at least comprise microwave read-write antenna (roadside unit (Road Side Unit, RSU) microwave read-write antenna), sensor, server and data backup server.Wherein, described RSU microwave read-write antenna for near vehicle communication with transceiving data, described multiple sensors, for detection of road condition, gathers information of road surface, described server and data backup server are used for storing Backup Data.In addition, each trackside node also comprises power inverter and large-capacity battery, is used to equipment power supply.
Step 102: the car-mounted device of each car, by carrying out radio communication with trackside system, sends vehicle condition information separately to trackside system, and receive the result of being sent by background system of trackside system forwards.
Step 103: trackside system, by carrying out wire communication with background system, sends to background system by gathered information of road surface and the vehicle condition information receiving, and receives the respective handling result that background system sends, and is transmitted to corresponding car-mounted device.In other words, described background system carries out wire communication by communication network and trackside system, the information of road surface that reception is transmitted by trackside system and vehicle condition information, and according to the operational application deal with data of traffic system, unification is carried out optimization allotment to vehicle, then, then by communication network, result is returned to trackside system, and by trackside system, useful information is sent to corresponding vehicle.
In described step 103, whether the real-time detection of trackside node has car to enter its wireless signal overlay area, if car having been detected enters in its wireless signal overlay area, utilize the electronic tag of its microwave read-write antenna and this car to carry out radio communication, thereby obtain the vehicle condition information that this car gathers, and described vehicle condition information is saved to described server and data backup server.In other words, after in vehicle enters into the region that the wireless signal of trackside node covers, RSU microwave read-write antenna in trackside node and the OBU electronic tag in car-mounted device are with Dedicated Short Range Communications, (Dedicated Short Range Communications, DSRC) agreement is set up communication network, the vehicle condition information gathering to receive car-mounted device, wherein, DSRC protocol stack model is with reference to figure 9.Trackside system can not only collection vehicle vehicle condition information (as the speed of vehicle, acceleration, position, direction of motion etc.), can also gather other external informations such as information of road surface and weather.Trackside system is transferred to the untreatment data collecting in server and backs up, and then transfers to cloud storage area, and sends to background system.Background system will send to trackside system by communication network after data processing, then sends to corresponding car-mounted device, and assisting vehicle travels.
After described step 101, the car-mounted device of each car can also be by carrying out radio communication with trackside system, to trackside system, send vehicle solicited message separately, and receive trackside system forwards by background system, respond described vehicle solicited message and the vehicle response information sent, to make corresponding operation according to described vehicle response information.
After described step 101, the car-mounted device of each car can also pass through mutual connection setup car self-organization network, to mutually transmit information needed by car self-organization network.
In the present embodiment, communication network between OBU and RSU is with DSRC protocol communication, trackside system is to be connected and to be formed by network equipments such as optical fiber, repeater, switches with the communication network between background system, described car self-organization network is vehicle self-organizing network (the Vehicular Ad-hoc Network under low speed turntable, VANET), it sets up by Ad-hoc under lower-speed state.The present embodiment is all brought the equipment of whole system in network, and relevant information is delivered to background system, and the result of background system (message or instruction) is delivered to accurately to the relevant device of system.
Above-mentioned trackside system is the important component part of bus or train route cooperative system, and it,, by carrying out information sharing, intelligent coordinated between the ，Shi Cheyu roads such as wireless communication technology, cognition technology, information fusion and treatment technology, has improved traffic efficiency and safety.
The present invention can gather vehicle condition information by car-mounted device automatically, and by DSRC agreement, realize the two-way communication of vehicle and road, by trackside system acquisition information of road surface, and pass to background system by crossing communication network about the information exchange of vehicle and road, by background system unified management result that analysis is obtained, feed back to vehicle, make vehicle make reasonable safe adjustment, thereby improve security and the operational efficiency of traffic system.
Fig. 2 is the bus or train route Turbo Detection for Cooperative Communication applied environment schematic diagram that the embodiment of the present invention provides, and as shown in Figure 2, comprising:
That in each car, installs has wireless communication ability and can gather and show the car-mounted device 8 of vehicle condition information;
Along having of road both sides installation is wireless, also can gather the trackside system 1 of information of road surface with wire communication ability;
To comprising the message of vehicle condition information and information of road surface, process and send the background system 6 of respective handling result;
Wherein, the car-mounted device 8 of each car, by carrying out radio communication with trackside system 1, to trackside system 1 transmission vehicle condition information separately, and receives the result of being sent by background system 6 that trackside system 1 forwards; Trackside system 1, by carrying out wire communication with background system 6, sends to background system 6 by gathered information of road surface and the vehicle condition information receiving, and receives the respective handling result that background system 6 sends, and is transmitted to corresponding car-mounted device 8.
Further, described car-mounted device 8 is comprised of hardware and software two large divisions.Wherein, hardware components comprises OBU electronic tag 10, the double-mode integrated vehicle-mounted type subscriber computer 12 of the Big Dipper/GPS, power inverter 13, gyroscope 14, Windows panel computer 9, sensor (not shown); Software section is the Socket communication software that utilizes VS2010 to write under windows platform, software is arranged on vehicle-mounted Windows panel computer, the acquisition process and transmission flow and the roadside data reception flow process that realize information of vehicles, idiographic flow illustrates respectively in Fig. 4 and Fig. 5.
Further, described trackside system 1 is comprised of hardware and software two large divisions.Wherein, hardware components is by a plurality of trackside nodes that keep at a certain distance away along road both sides and settle, its each trackside node and described background system carry out wire communication, carry out radio communication with described car-mounted device, and at least comprise that RSU microwave read-write antenna 2, power inverter and large-capacity battery 4, server and data backup server 3, multiple sensors 5 form; Software section comprises that the reception collection of roadside data stores the reception transmission flow of uploading flow process and background system 6 data, and idiographic flow illustrates respectively in Fig. 6 and Fig. 7.
Further, background system 6 comprises control module, storage module and display module, and it is processed in real time, stores according to traffic and shows the information being transmitted by trackside system 1, and the result that analysis is obtained is passed to trackside system 1 by communication network.
Further, whether the real-time detection of each trackside node has car to enter its wireless signal overlay area, if car having been detected enters in its wireless signal overlay area, utilize its RSU microwave read-write antenna 2 to carry out radio communication with the OBU electronic tag 10 of this car, thereby obtain the vehicle condition information that this car gathers.
Further, the car-mounted device 8 of each car is by carrying out radio communication with trackside system 1, the vehicle solicited message sending separately to trackside system 1, and receive the vehicle response information of being sent by the background system 6 described vehicle solicited messages of response that trackside system 1 forwards, to make corresponding operation according to described vehicle response information.
Further, the car-mounted device 8 of each car is by mutual connection setup car self-organization network, to mutually transmit information needed by car self-organization network.
The communication network using in the present embodiment comprises that the communication network between communication network, trackside system and the background system between car self-organization network, OBU and the RSU under lower-speed state forms, communication network is all brought into the equipment of whole system in network, relevant information is delivered to background system, and the information of background system and order is delivered to accurately to each equipment of system.
As shown in Figure 2, bus or train route Turbo Detection for Cooperative Communication comprises trackside system 1, car-mounted device 8, background system 6, communication network 7.In the time of in vehicle enters into the region that the wireless signal of trackside system 1 covers, RSU microwave read-write antenna 2 in its communication module carries out radio communication with the OBU electronic tag 10 in car-mounted device 8, and car-mounted device 8 sends to trackside system 1 by the vehicle condition information of collection with DSRC agreement by OBU electronic tag 10.Trackside system 1 receives road when getting on the bus vehicle condition information (as car speed, acceleration, vehicle body status etc.) itself, can also gather other external informations such as information of road surface and weather by multiple sensors 5.Trackside system 1 is transferred to the untreatment data collecting in server 3 and backs up, then by communication network 7 by data upload to cloud storage area and send to background system 6.Background system 6 carries out data analysis according to condition of road surface, for each car is recommended the most suitable speed of a motor vehicle, route, and the dangerous situation that alerting drivers may exist, and adjust in real time according to the real-time change of data.
Situation 1: when vehicle request is overtaken other vehicles or added fleet, car-mounted device 1 is by for overtaking other vehicles or adding the vehicle solicited message of fleet to be sent to background system 6 via trackside system 1, background system draws solution after calculating by program, and the vehicle response message that comprises described solution is sent to trackside system 1 by communication network, then trackside system 1 sends to corresponding car-mounted device 8 by RSU, driver sends for overtaking other vehicles or adding the solution that can provide according to background system 6 in time after the vehicle solicited message of fleet to make a response, can greatly reduce the generation of accident, guarantee that vehicle safety efficiently travels, improve the operational efficiency of traffic system.
Situation 2: while having an accident in road, the sensor of accident vehicle vehicle body obtains vehicle condition information, near and the RSU initiatively this information being sent to by OBU, RSU obtains sending to immediately background system 6 after this information, background system 6 is analyzed condition of road surface immediately, according to vehicle flowrate, the road is clear intelligence such as degree, recommend new optimum road and the maximum permissible train speed etc. for vehicle, and the result that analysis is obtained sends near trackside node accident, near all vehicles by trackside node, result being sent to.
When overspeed of vehicle, background system 6 is according to real-time road prediction accident, and with alerting driver, near avoiding, vehicle is failed to understand the place ahead situation and second accident is occurred.
Situation 3: when car is obstructed the view by lorry, driver cannot observe the situation of road ahead, once there is accident in road ahead, lorry emergency brake, car reaction is too late, very easily there is rear-end collision, if under lower-speed state, vehicle can directly connect with near vehicle by car self-organization network, between near vehicle, can exchange the information such as road ahead situation, the vehicle that is blocked like this sight line can be learnt the operation conditions of near vehicle and road in advance, judge in advance, and according to the prompting of system, select most suitable drive manner, make traffic system reach top efficiency and high degree of safety.
Fig. 3 is the bus or train route communication for coordination process flow diagram that the embodiment of the present invention provides, and as shown in Figure 3, step comprises:
Step S01: start.
Step S02: judgement vehicle be by OBU and RSU with DSRC protocol communication or set up slow-moving vehicle MANET, if by OBU and RSU with DSRC protocol communication, enter step S03 and step S04, if set up slow-moving vehicle MANET, enter step S19.
Step S03: vehicle enters in trackside system wireless signal coverage areas.
Step S04: the car-mounted device Real-Time Monitoring vehicle body state of vehicle, obtain vehicle condition information, or the vehicle solicited message sent of monitor vehicle.
Step S05: the RSU of the OBU of car-mounted device and trackside system communicates.
Step S06: the sensor Real-Time Monitoring pavement state of trackside system, obtains information of road surface.
Step S07: trackside system deposits the raw data that comprises information of road surface and vehicle condition information in server.
Step S08: trackside system is saved in data backup server by described raw data.
Step S09: raw data is uploaded to cloud storage area and background system.
Step S10: background system judges whether vehicle has an accident, if judgement does not have an accident, enters step S13, otherwise enters step S14.
Step S11: in execution step S10, judge whether vehicle has sent vehicle solicited message, if judgement vehicles failed sends vehicle solicited message, enter step S13, otherwise enter step S12.
Step S12: background system, according to described vehicle solicited message, draws the vehicle response information that comprises described solution.
Step S13: background system carries out routine data analysis.
Step S14: background system analysis obtains emergency condition solution.
Step S15: background system is presented at Various types of data result on background system, step display S12 analyzes the result obtaining to step S14.
Step S16: background system sends result to trackside system.
Step S17: the RSU of trackside system communicates by letter with the OBU of corresponding car-mounted device.
Step S18: car-mounted device receives the result being drawn by background system of trackside system forwards.
Step S19: under lower-speed state, vehicle is set up and is connected fast with near vehicle by Ad-hoc network.
Step S20: vehicle initiatively sends near the vehicle of information notification.
Step S21: car self-organization network connects disconnection.
Step S22: finish.
Fig. 4 is acquisition process and the transmission flow figure of the vehicle condition information that provides of the embodiment of the present invention, vehicle gathers vehicle condition information by the car-mounted device being arranged on vehicle body, and by described vehicle condition communication in the Windows panel computer of car-mounted device, corresponding software in Windows panel computer will be presented on screen after described vehicle condition information processing, near and the RSU microwave read-write antenna of the trackside system sending to DSRC agreement by OBU electronic tag, wherein, described vehicle condition information comprises the speed of the vehicle gathering by the double-mode integrated vehicle-mounted type subscriber computer of the Big Dipper/GPS, position and direction, the speed of the vehicle gathering by gyroscope and acceleration etc., the vehicle body status data gathering by other sensor, as shown in Figure 4, concrete steps comprise:
Step S101: start.
Step S102: speed, position and the direction of the double-mode integrated vehicle-mounted type subscriber computer of the Big Dipper/GPS collection vehicle of car-mounted device, the speed of gyroscope collection vehicle and acceleration etc., other sensor gathers vehicle body status data.
Step S103: car-mounted device by the data transmission gathering in Windows panel computer.
Corresponding software in step S104:Windows panel computer carries out data to be presented on screen after the processing such as analog to digital conversion.
Step S105: car-mounted device sends to the data after processing and vehicles identifications information by its OBU electronic tag near the RSU microwave read-write antenna of trackside system.
Step S106: finish.
Fig. 5 is that the roadside data that the embodiment of the present invention provides receives flow process, and trackside system sends to by RSU the result transmitting from background system the corresponding vehicle of request msg with DSRC agreement, and concrete steps comprise:
Step 201: start.
Step 202: background system sends useful information (being result) to corresponding trackside system.
Step 203: the RSU microwave read-write antenna of trackside system is by the OBU electronic tag radio communication with onboard system, sends to the vehicle of request msg by described useful information or needs the vehicle of early warning.
Step 204: the OBU of car-mounted device receives described useful information and is presented on the Windows panel computer of car-mounted device.
Step 205: finish.
Fig. 6 is that the reception collection of the roadside data that provides of the embodiment of the present invention stores and uploads flow process, the data (being vehicle condition information) that the OBU electronic tag of the RSU microwave read-write antenna reception car-mounted device of trackside system transmits, simultaneously, the sensor of trackside system gathers road data (being information of road surface), by these data storings in server and data backup server, and by communication network by data upload to cloud storage area and background system, as shown in Figure 6, concrete steps comprise:
Step 301: start.
Step 302: data and vehicles identifications information that the OBU electronic tag of the RSU microwave read-write antenna reception car-mounted device of trackside system transmits.
Step 303: in the time of execution step S302, the sensor of trackside system gathers road data.
Step 304: trackside system, by the data of road data and reception and vehicles identifications information, is stored in its server and data backup server.
Step 305: trackside system upload the data to cloud storage area and background system.
Step 306: finish.
Fig. 7 is the reception transmission flow of the background system data that provide of the embodiment of the present invention, and as shown in Figure 7, concrete steps comprise:
Step 401: start.
Step 402: background system sends to trackside system by the information of vehicle request or for warning the information of vehicle.
Step 403: trackside system receives described information.
Step 404: trackside system is carried out radio communication by the OBU electronic tag of its RSU microwave read-write antenna and car-mounted device, thus this information is sent to the corresponding vehicle of vehicle indication information.
Step 405: finish.
Fig. 8 is the workflow of the background system that provides of the embodiment of the present invention, and described background system comprises control module, storage module and display module, and as shown in Figure 8, concrete steps comprise:
Step 501: start.
Step 502: background system receives the data of trackside system and server transmission.
Step 503: background system is according to vehicle request and condition of road surface analyzing and processing data.
Step 504: the result that background system obtains analysis stores and is presented on screen.
Step 505: background system sends to trackside system by the result of vehicle request by communication network.
Step 506: finish.
In above-described embodiment, communication network of the present invention comprises communication network between VANET, OBU and RSU and the communication network between trackside system and background system, wherein, VANET is set up by Ad-hoc under lower-speed state, between OBU and RSU, with DSRC protocol communication, between trackside system and background system, by network equipments such as optical fiber, repeater, switches, couple together.Communication network is all brought the equipment of whole system in network, and relevant information is delivered to background system by communication network, and the information of background system and order is delivered to accurately to each equipment of system.
To sum up, by method and system of the present invention, except realizing communicating by letter between vehicle and vehicle, can also realize following functions:
1, blind spot warning
When driver attempts to change but blind spot place while having vehicle, background system can give driver warning.For example, the vehicle solicited message that car-mounted device is attempted vehicle driver to change is sent to background system by trackside system, background system is by analyzing the related datas such as current vehicle condition information and road information, obtaining blind spot place has the result of vehicle, and the vehicle response message that comprises described result is sent to car-mounted device demonstration via trackside system, with alerting driver.
2, frontly hit early warning
When vehicle parking or low running speed above and this car while not taking brake measure gives driver warning.For example, car-mounted device is sent to background system by the vehicle condition information that comprises car speed via trackside system, background system is according to current traffic circulation situation, learn that preceding vehicle has been stopped or during low running speed, in time the result that is used to indicate deceleration is sent to car-mounted device via trackside system, with alerting driver.
3, electronic urgent Brake lamp
When front vehicles brake hard for a certain reason, and front vehicle can give driver warning because not discovering when nothing is taked brake measure.For example, background system is received the vehicle condition information that comprises speed and acceleration of front vehicles, analysis draws described front vehicles brake hard, and according to the vehicle condition information that comprises speed and acceleration of the front vehicle of receiving, analysis draws when described front vehicle is not taked brake measure, in time the result that is used to indicate braking is sent to car-mounted device via trackside system, with alerting driver.
4, crossing is auxiliary drives
When entering crossing, vehicle gives driver when in the hole with warning, as barrier blocks pilot's line of vision and cannot see counter flow.For example, background system is received the vehicle condition information that comprises position and direction of motion of vehicle, analyzes and show that described vehicle enters crossing, now, the analysis result of crossing traffic is sent to car-mounted device via trackside system, with driver assistance, drives.
Similarly, vehicle condition information and trackside system acquisition information of road surface that background system of the present invention gathers by analyzing car-mounted device, can also realize following functions:
5, forbidden early warning
In the region of can passing through, attempt to change but subtend track while having Vehicle Driving Cycle, give driver warning.
6, violation signal or stop sign warning
Vehicle is in being about to make a dash across the red light or during stop line precarious position, driver can receive vision, sense of touch or the audible alert that car-mounted device is sent.
7, bend vehicle speed prewarning
When car speed is higher than bend preset vehicle speed, system can be pointed out driver to slow down or take hedging measure.
8, road traffic condition prompting
Driver can receive the up-to-date information of relevant road ahead, weather and traffic in real time, as road accident, road construction, the wet and slippery degree in road surface, detour travel, traffic congestion, weather, parking restriction and turn to restriction etc.
9, vehicle is as traffic data collection terminal
Car-mounted device transmission information is to trackside system, and this information pathway side system is processed, the data that become effectively, need.
10, designated lane management
By near using or parallel track can balanced traffic demand, also can use control strategy, as selected when the place ahead has an accident, commutate and travel;
Change ring road timing scheme;
Utilize information plate to release news, induction driver selects different paths.
11, traffic system condition predicting
Real-Time Monitoring traffic and transportation system operation conditions, effectively moves predicted data is provided for traffic system, comprises hourage, down time, delay time at stop etc.
Traffic related information is provided, comprises road control information, road roughness, rainfall prediction, visibility and air quality
Provide transport need information, as vehicle flowrate etc.
In sum, the present invention has following technique effect:
The present invention has overcome that only intelligent transport technology to be used in to ETC upper and not for the problem of bus or train route cooperative system, not only realized communicating by letter of vehicle and vehicle, more realized communicating by letter of vehicle and road, and by background system, vehicle is carried out to optimization allotment, efficiency and the security of people's trip have been improved, make whole transportation system safety, in order, efficiently operation, for intelligent management provides a great convenience; For the traffic administration in city, the management that the present invention is traffic provides a great convenience, and has not only saved manpower and materials, has optimized the utilization of road simultaneously, and more people's life security provides guarantee.
Although above the present invention is had been described in detail, the invention is not restricted to this, those skilled in the art of the present technique can carry out various modifications according to principle of the present invention.Therefore, all modifications of doing according to the principle of the invention, all should be understood to fall into protection scope of the present invention.
Claims (10)
1. a bus or train route collaborative communication method, is characterized in that, comprising:
In each car, tool for mounting has wireless communication ability also can gather the car-mounted device of vehicle condition information;
Along road both sides tool for mounting, there is wireless and wire communication ability and can gather the trackside system of information of road surface;
Arrange comprising that the message of vehicle condition information and information of road surface processes and send the background system of respective handling result;
The car-mounted device of each car, by carrying out radio communication with trackside system, sends vehicle condition information separately to trackside system, and receives the result of being sent by background system of trackside system forwards;
Trackside system, by carrying out wire communication with background system, sends to background system by gathered information of road surface and the vehicle condition information receiving, and receives the respective handling result that background system sends, and is transmitted to corresponding car-mounted device.
2. method according to claim 1, it is characterized in that, described trackside system comprises a plurality of trackside nodes that keep at a certain distance away along road both sides and settle, its each trackside node and described background system carry out wire communication, carry out radio communication with described car-mounted device, and at least comprise microwave read-write antenna, sensor and server.
3. method according to claim 2, it is characterized in that, described car-mounted device at least comprises electronic tag, the double-mode integrated vehicle-mounted type subscriber computer of the Big Dipper/GPS, sensor, gyroscope, whether the real-time detection of trackside node has car to enter its wireless signal overlay area, if car having been detected enters in its wireless signal overlay area, utilize the electronic tag of its microwave read-write antenna and this car to carry out radio communication, thereby obtain the vehicle condition information that this car gathers.
4. according to the method described in claim 1-3 any one, it is characterized in that, also comprise:
The car-mounted device of each car is by carrying out radio communication with trackside system, to trackside system, send vehicle solicited message separately, and receive trackside system forwards by background system, respond described vehicle solicited message and the vehicle response information sent, to make corresponding operation according to described vehicle response information.
5. method according to claim 4, is characterized in that, also comprises:
The car-mounted device of each car is by mutual connection setup car self-organization network, to mutually transmit information needed by car self-organization network.
6. a bus or train route Turbo Detection for Cooperative Communication, is characterized in that, comprising:
That in each car, installs has wireless communication ability and can gather the car-mounted device of vehicle condition information;
Along having of road both sides installation is wireless, also can gather the trackside system of information of road surface with wire communication ability;
To comprising the message of vehicle condition information and information of road surface, process and send the background system of respective handling result;
Wherein, the car-mounted device of each car, by carrying out radio communication with trackside system, sends vehicle condition information separately to trackside system, and receives the result of being sent by background system of trackside system forwards;
Wherein, trackside system, by carrying out wire communication with background system, sends to background system by gathered information of road surface and the vehicle condition information receiving, and receives the respective handling result that background system sends, and is transmitted to corresponding car-mounted device.
7. system according to claim 6, it is characterized in that, described trackside system comprises a plurality of trackside nodes that keep at a certain distance away along road both sides and settle, its each trackside node and described background system carry out wire communication, carry out radio communication with described car-mounted device, and at least comprise microwave read-write antenna, sensor and server.
8. system according to claim 7, it is characterized in that, described car-mounted device at least comprises electronic tag, the double-mode integrated vehicle-mounted type subscriber computer of the Big Dipper/GPS, sensor, gyroscope, whether the real-time detection of each trackside node has car to enter its wireless signal overlay area, if car having been detected enters in its wireless signal overlay area, utilize the electronic tag of its microwave read-write antenna and this car to carry out radio communication, thereby obtain the vehicle condition information that this car gathers.
9. according to the system described in claim 6-8 any one, it is characterized in that, also comprise:
The car-mounted device of each car is by carrying out radio communication with trackside system, to trackside system, send vehicle solicited message separately, and receive trackside system forwards by background system, respond described vehicle solicited message and the vehicle response information sent, to make corresponding operation according to described vehicle response information.
10. system according to claim 9, is characterized in that, the car-mounted device of each car is by mutual connection setup car self-organization network, to mutually transmit information needed by car self-organization network.
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