CN105654749A - Vehicle-mounted signal lamp receiving device - Google Patents
Vehicle-mounted signal lamp receiving device Download PDFInfo
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- CN105654749A CN105654749A CN201410652386.4A CN201410652386A CN105654749A CN 105654749 A CN105654749 A CN 105654749A CN 201410652386 A CN201410652386 A CN 201410652386A CN 105654749 A CN105654749 A CN 105654749A
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Abstract
The invention provides a vehicle-mounted signal lamp receiving device comprising a wireless transceiver unit, a processing unit and an output unit. The wireless transceiver unit connected to an internet network by a wireless network receives a signal lamp information issuing interface message, sends the message to a processing unit, and sends a signal lamp state query message according to an instruction of the processing unit. According to current position coordinate, vehicle speed, and direction information, measured by the GPS unit, the processing unit obtains a position coordinate of an intersection in front of a driving vehicle and road name information by combining an electronic map, packages the signal lamp state query message, and sends the message to the wireless transceiver unit for sending; and the signal lamp information issuing interface message is parsed to obtain state information and position information of the signal lamp of the intersection in front of the vehicle, and then the information is sent to the output unit. The output unit outputs the state information of the signal lamp of the intersection in front of the vehicle in an image, sound, or electronic interface mode or in a combined mode. With the device, the driver can get information of a signal lamp state of an intersection in front of a vehicle and a changing trend timely, so that the vehicle can be driven by using an optimal operation way.
Description
Technical field
The present invention relates to traffic signals control field, relate in particular to integrated application wireless communication technology,The intelligent transportation control field of computer technology and traffic signals control technology.
Background technology
Growing along with vehicle guaranteeding organic quantity in the continuous expansion of city size and city, cityCity's road traffic pressure is increasing. In order to ensure road safety, to improve traffic efficiency, cityThe each grade crossing in city generally adopts traffic lights command the current of all directions traffic or stopOnly. Specifically, by cycle, split and the phase difference of crossroad traffic signal lamp are set,Traffic flow to all directions on time distributes right-of-way. Traffic lights are from initial each crossingThe single-point pattern of managing independently, develops into " the line of multiple crossings linkage management on major trunk roadsControl " pattern, and " face control " mould of the linkage management between multiple crossings in plane domainFormula. Also multiple comprehensive utilization computer technology, the communication technology and reason traffic control have been released in the industryTechnology and the intelligent traffic control system designed and developed extensively should obtain in urban traffic control fieldWith. These Intelligent traffic management systems are mostly according to crossing control, Region control and center-control threeLevel is disposed. At crossing deployment signal lamp, wagon detector and intersection annunciator, for gathering, locatingReason, transmission transport information and control belisha beacon; Intersection annunciator and Regional Control Center pass throughCommunication system connects, and completes uploading of crossing traffic information and assigning of traffic control signal; RegionControl centre monitors the work shape of local each crossing traffic situation and semaphore and signal lamp in real timeState, coordinates to control to each crossing traffic, carries out manual intervention if desired by manmachine command;CCC gathers the information of an each Regional Control Center in city, carry out statistical analysis andCoordinate to control.
Although the urban transportation particularly intelligent management of belisha beacon has obtained many progress,But still there are in actual applications some weak points. For example, at the larger crossing of the magnitude of traffic flow,When vehicle pass-through, common speed per hour is not high, spacing is less, if now there is public transport big bus, large-scale in frontThe oversize vehicles such as lorry, the sight line of dilly following closely can seriously be blocked, and usually cannotObserve the situation of change of signal lamp, often just find to have rushed red light following after front truck sails crossing into.For another example,, when driver is current on a road, cannot predict traffic and the signal lamp at next crossingSituation, often causes unnecessary acceleration repeatedly, brake operation, has not only reduced fuel efficiency,And indirectly cause more environmental pollution.
The present invention, for above-mentioned weak point, utilizes wireless communication technology by belisha beacon informationShow from the sighting distance at crossing the operation bench that extends to motor vehicle, greatly facilitated driver to front roadThe anticipation of mouth traffic status, to adopt optimum manipulation scheme steering vehicle.
Summary of the invention
The present invention proposes a kind of cab signal lamp receiving system, comprises wireless transmit/receive units, processes listUnit and output unit, wherein,
Wireless transmit/receive units is responsible for entering the Internet by wireless network, receives signal information and issuesInterface message is also delivered processing unit, simultaneously according to the status poll of processing unit instruction transmitted signal lampMessage;
Processing unit is as the master controller of this device, be responsible for according to the current position coordinates of vehicle,The speed of a motor vehicle, directional information, and built-in electronic chart in advance, obtain vehicle and exercise junction ahead positionPut coordinate and road name information, and encapsulated signal lamp STATUS ENQUIRY message is delivered wireless transmit/receive units accordinglySend; Be responsible for resolving the signal information issuing interface message that wireless transmit/receive units is delivered simultaneously, obtainGet junction ahead signal lamp status information and positional information, and deliver output unit;
Output unit will in the mode of image, sound, electrical interface or above-mentioned any several combinationsThe output of junction ahead signal lamp status information;
GPS unit, is responsible for position coordinates, the speed of a motor vehicle, the direction of real-time measuring vehicle, and will records letterBreath reports processing unit.
Above-mentioned output unit is exported the real-time status of garage's junction ahead signal lamp in electrical interface modeInformation, refers to according to predetermined automobile control bus interface protocol, by after output information encapsulationSend to other electronic control device for vehicle ECU in car.
The real-time status of above-mentioned signal lamp comprises the current direction in the track of signal lamp control and respective partyCurrent state upwards and state switch information between countdown, wherein the current directional information bag in trackDraw together craspedodrome, the information of turning left, turn right, turn around. The positional information of signal lamp comprises the geography of signal lampThe road directional information of position coordinates and signal management.
Above-mentioned signal information issuing interface message comprises following field information: sender's mark,The signal lamp number comprising in recipient's mark, transmitting time label, type of message, this message bagAmount, each signal lamp position coordinates, the current direction of each signal lamp control, each signal lamp current state,Each signal lamp is apart from next state variation time, each signal lamp control parameter.
Above-mentioned transmitting time label, refers to time when signal information issuing interface message sends,Processing unit, will be according to transmitting time with when local in the time of analytic signal lamp information issuing interface messageBetween between time difference, to the signal lamp state in obtained junction ahead signal lamp status informationThe switching countdown time is revised, and after compensation propagation delay time, result is delivered to output unit, and at thisGround continues signal lamp state to switch the self-clocking of countdown time.
Above-mentioned local zone time is by NTP NTP and network standard time synchronized.
Above-mentioned wireless network refers to any communication network that internet access service is provided with wireless modeNetwork, comprises WiFi network, WiMAX network, GPRS network, EDGE network, CDMA2000lxNetwork, CDMA2000EVDO network, WCDMA network, TD-SCDMA network, 4G network, LTENetwork and the evolvement network based on above-mentioned wireless network.
By implementing the present invention, can effectively existing signal lamp be introduced to each driving cabin, convenientDriver understands junction ahead signal lamp state and variation tendency in time, and takes accordingly best manipulationMode steering vehicle. Further, the present invention and the combination of Car Electronic Control system can be helped to carRealize Function for Automatic Pilot.
Read by reference to the accompanying drawings after the detailed description of embodiment of the present invention, other features of the present invention andIt is clearer that advantage will become.
Brief description of the drawings
Fig. 1 is the existing traffic controller functional block diagram in market;
Fig. 2 is one embodiment of the invention system block diagram;
Fig. 3 is the functional block diagram of novel signal lamp controller in one embodiment of the invention;
Fig. 4 is the functional block diagram of cab signal lamp receiving system in one embodiment of the invention;
Fig. 5 is that in one embodiment of the invention, cab signal lamp receiving system adopts image mode outputSignal lamp status information schematic diagram;
Fig. 6 is that in one embodiment of the invention, cab signal lamp receiving system extracts driving junction aheadThe flow chart of signal lamp status information;
Fig. 7 is the system block diagram of another embodiment of the present invention;
Fig. 8 is intelligent traffic administration system server and Novel signal light control in another embodiment of the present inventionThe synchronous flow process of inhibit signal lamp status information between device processed.
Detailed description of the invention
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
Fig. 1 be existing market use belisha beacon controller function block diagram, its operation principle asUnder:
The external crossing pedestrian of interface unit, vehicle detection apparatus, the crossing that these devices are detectedThe information such as pedestrian's street crossing induction information, vehicle pass-through density, traffic volume send master control list to through busUnit; Interface unit also comprises beacon signal drive circuit, is responsible for the control providing according to main control unitSignal driver belisha beacon work processed; Interface unit also comprises a RCI, forConnect remote control center, report field data or receive control centre's teleinstruction;
Main control unit is according to the crossing pedestrian of Site Detection, vehicle pass-through information, and default roadMouth signal controlling parameter, produces (or adjustment) signal lamp control signal, and input interface unit is also logicalThe control of overdrive circuit settling signal lamp; Main control unit is also responsible for resolving and executive's interface unit is receivedRemote control center instruction, according to predetermined interface protocol packing reporting information;
Saved system software and configuration information in memory cell;
Clock and monitoring unit be completion system self-inspection in the time that system starts, and enters normal work in systemSystem timing function is provided after state, monitoring system duty simultaneously, once find fault, verticalThe signal lamp that produces fault-signal closed interface unit drives mouth, then produces yellow flash signalDrive signal lamp.
In addition, belisha beacon controller also possesses on-site manual control function, normally by connecingA keyboard of mouth unit is realized with demonstration subelement.
Fig. 2 is the system functional block diagram of one embodiment of the invention, wherein novel signal lamp controllerComplete outside the general utility functions such as site traffic information gathering, signal lamp driving control, also by trafficControl signal state and signal lamp positional information be by being wirelessly sent to cab signal lamp receiving system,Export junction ahead traffic lights current state information by the latter to driver.
Fig. 3 has provided the functional block diagram of novel signal lamp controller in the embodiment of the present invention. As figure canSee, it is on existing traffic controller basis, to increase a wireless transmit/receive units to form. ?When completing existing traffic controller all functions, by the signal condition of current belisha beaconAfter encoding with signal lamp positional information, send by wireless transmit/receive units. The signal shape of signal lampState comprises that current state and the state in the current direction in track and respective direction switches the countdown timeEtc. information, wherein the current directional information in track comprise craspedodrome, the information such as turn left, turn right, turn around,It is current or forbidden this side up that current state in respective direction refers to current, and another is heavyWanting information is exactly state switching time once on the signal distance in the current direction in each track, as worked asBefore be the current state (green light) of keeping straight on, the distance time that state switches is next time 20 seconds, 20After second, signal lamp will be by green reddening (through amber light transition). Signal lamp positional information comprises signal lampGeographical position coordinates and the road direction of signal management, direction as current in south orientation north. OnState belisha beacon signal condition and positional information according to predefined signal information issuing interfaceMessage format is encoded, is encapsulated, and then sends out with broadcast mode by the wireless transmit/receive units in Fig. 3See off.
Fig. 4 has provided the functional block diagram of cab signal lamp receiving system in the embodiment of the present invention. ItsMiddle wireless transmit/receive units is responsible for receiving signal condition information and the signal that novel signal lamp controller sendsLamp positional information, delivers the further analyzing and processing of processing unit, simultaneously also according to the finger of processing unitOrder is by information reportings such as the position of this car, the speed of a motor vehicle, enforcement directions; Processing unit is as this deviceMaster controller, is responsible for resolving belisha beacon signal condition information and the position that wireless transmit/receive units is deliveredPut information, and in conjunction with the current position coordinates of the machine, the speed of a motor vehicle, directional information, and built-in in advanceLocal electronic chart, select vehicle and exercise the signal lamp status information of junction ahead, deliver outputUnit; Output unit is in the mode of image, sound, electrical interface or above-mentioned any several combinationsBy the output of junction ahead signal lamp status information, so that driver and vehicle control system are understood in timeJunction ahead communications status. The current position coordinates of above-mentioned the machine, the speed of a motor vehicle, directional information are by GPSUnit is measured acquisition in real time.
A kind of junction ahead signal lamp status information with image mode output as shown in Figure 5, withSubfield or unsteady window mode show the signal of garage's junction ahead on common navigator display interfaceLamp state, comprises crossing road name information (National Road, Ru Huangxing road), crossroads traffic light current state(now current for keeping straight on as seen in figure, to turn left forbidden), and each signal in secondsThe lamp countdown time (will become craspedodrome in figure after visible 15 seconds forbidden, and turn left current). Certainly,The countdown time is dynamic change, as long as before cab signal lamp receiving system successfully receives onceSide's belisha beacon status information and positional information, just can switch to fall to count according to signal lamp whereinTime the time count voluntarily demonstration in this locality. The existing smart mobile phone in market has possessed navigation merit mostlyCan, they have built-in GPS, wireless current function and powerful computing capability, as long as navigation is installedApplication software and electronic chart built-in or that networking is obtained just can be realized self-navigation. Obviously,As long as increase belisha beacon state and positional information reception, parsing, defeated on navigation application softwareGo out module, can realize cab signal lamp receiving system related in the above embodiment of the present invention.Equally, be also easy to realize above-mentioned cab signal lamp receiving system based on the existing automatic navigator in market,As long as depending on the wireless current Elementary Function of concrete condition expansion or increase automatic navigator, simultaneously at itOn software, increase belisha beacon state and positional information reception, parsing, output module.
Certainly, on the navigation interface of smart mobile phone navigation software interface and automatic navigator with imageWhen mode is exported junction ahead signal lamp status information, the output of cab signal lamp receiving systemSignal lamp status information can also be reported by voice mode in unit, as " so-and-so crossing, front, straightRow green light, left-hand bend red light. " in addition, same information can also be passed through predetermined interfaceAgreement, is connected with vehicle control system in electrical interface mode. For example, can be by cab signal lampReceiving system is as an electronic control device for vehicle ECU, by automobile control bus (as controllerLAN, i.e. CAN bus) be connected with other ECU of automobile. Like this, Auto Electronic Controlled SystemJust can grasp in time the real-time status of junction ahead signal lamp, can design accordingly best energy consumption certainlyThe moving function of driving. For the realization of complete automatic driving vehicle, by implementing the present invention with electronics sideIt is also extremely valuable that formula is obtained junction ahead signal lamp state.
In the above-described embodiments, novel signal lamp controller by wireless mode by the crossing of its controlSignal lamp state and positional information are sent to cab signal lamp receiving system. In view of the spy of radio communicationPoint, cab signal lamp receiving system may can not only receive junction ahead signal lamp state and positionInformation also may receive that some come from the irrelevant letter of other crossing novel signal lamp controller simultaneouslyBreath. Fig. 6 further illustrates cab signal lamp receiving system and how from reception information, to extract frontThe signal lamp status information of the relevant current direction in crossing. First, according to this car current position coordinates andDirection of traffic, in conjunction with built-in in advance electronic chart, determines junction ahead position coordinates; Then certificateWhether the information that this judgement receives belongs to the signal lamp at correct crossing, if not abandoning this letterBreath, further makes a decision if belong to the signal lamp at correct crossing; Finally according to reception informationIn the road directional information of signal management, in conjunction with this car direction of traffic, judge whether thisSignal lamp in car direction of advance, abandons the signal information in opposite direction, retains in direction of advanceSignal lamp status information.
Fig. 7 has provided the system block diagram of another embodiment of the present invention, in this embodiment, and cityThe novel signal lamp controller at each crossing, city is built by internet and municipal intelligent traffic management serverVertical current connection, belisha beacon current state and the signal lamp positional information controlled are separately reportedGive the latter; Municipal intelligent traffic management server by wireless network to cab signal lamp receiving systemIssue belisha beacon current state and positional information that these gather. Signal lamp current state and positionPut reporting and issue based on predefined signal information and reporting and issuing interface message lattice of informationFormula. Report and in interface message, at least comprise following field information: sender's mark, recipient's mark,The signal lamp quantity, the each signal lamp position that in time tag, type of message, this message bag, compriseUnder the current direction of coordinate, each signal lamp control, each signal lamp current state, each signal lamp distanceNext state transformation period, each signal lamp control parameter. Wherein time tag refers to that transmit leg is sendingLocal zone time when this message, carries out in the time that processing signals lamp switches countdown parameter for recipientThe compensation of network transfer delay. Message type field can make this interface protocol possess autgmentability,As municipal intelligent traffic management server need to carry out the duty of belisha beacon controller ownWhen supervision, can report interface message to realize by defining a new duty. Due to onePlatform belisha beacon controller may controlled multiple signals lamp, now reports in interface message and first usesThe signal lamp quantity comprising in this message bag indicates the current state that has subsequently how many signal lampsReport with positional information, then provide successively the position coordinates of these signal lamps, the current side of controlTo controls such as, current state, distance lower next state switching time and cycle, split and phase differencesParameter processed.
What in the specific implementation, municipal intelligent traffic management server can be by as shown in Figure 8 is sameStep flow process keeps the state synchronized with belisha beacon. First, belisha beacon controller is startingAnd send a signal lamp state reporting message after normal work, make municipal intelligent traffic management clothesBusiness device can obtain all signal lamps that this traffic controller controls shape in the information reporting momentState value; Then according to the control parameter of each signal lamp, transmitting time label and signal lamp apart from next timeThe revised signal lamp state of state variation Time Calculation switches the countdown time, and accordingly in this localityThe automatic switchover of timing settling signal lamp state; After this under normal condition, belisha beacon controlDevice only need regularly report No. one time signal lamp status message, and municipal intelligent traffic management server passes through phaseSame handling process can keep both sides' signal lamp state synchronized; If belisha beacon controllerDuty change, find fault etc. as power-off restarting, self-inspection, will report interrupt cycleFlow process and enter alarm report pattern, the duty situation of change of real-time report the machine, management clothesBusiness device is placed in fault warning by the state of this traffic controller subordinate signal lamp as the case may beTheir state of pattern or re-synchronization.
Municipal intelligent traffic management server is obtaining and the synchronous real-time status of each belisha beaconAfter, just have the traffic lights network of a number letter, how by digitized traffic signalsIt is exactly another of management server that lamp information is distributed to cab signal lamp receiving system timely and accuratelyMajor function. By following flow process, signal lamp status information is distributed to vehicle-mounted letter by management serverSignal lamp receiving system: cab signal lamp receiving system enters the Internet by wireless network, Jin ErheManagement server establishes a communications link; As previously mentioned, cab signal lamp receiving system is mono-according to GPSThe information such as first current position coordinates recording in real time, garage's direction, the speed of a motor vehicle, in conjunction with built-in in advanceUrban transportation electronic chart, can obtain position coordinates and the road name information at the next crossing of garage direction;Cab signal lamp receiving system sends target belisha beacon STATUS ENQUIRY message to management server,Comprising necessary informations such as crossing position coordinates, roadside information, the current directions of this car; Management clothesBusiness device is found out belisha beacon status information and the positional information of coupling accordingly, according to signal informationAfter the encapsulation of issuing interface message format coding, send to cab signal lamp receiving system; The latter with image,Sound or electrical interface mode are exported junction ahead signal lamp status information.
Above-mentioned wireless network refers to any communication network that internet access service is provided with wireless modeNetwork, comprises WiFi network, WiMAX network, GPRS network, EDGE network, CDMA2000lxNetwork, CDMA2000EVDO network, WCDMA network, TD-SCDMA network and based on above-mentioned nothingThe evolvement network of line communication network, as LTE, 4G network etc.
In the above-described embodiments, belisha beacon controller, municipal intelligent traffic management server andCab signal lamp receiving system has all accessed internet in the time of work, can pass through NTPNTP (NetworkTimeProtocol) first obtains time synchronized from network N TP server,Therefore they in the time of mutual transmitted signal lamp information interface message, what recipient can be by transmit legTime tag carrys out compensating network induced delay, makes signal lamp status information obtaining synchronously both sides.
Description of the invention provides for example, is not exhaustively or by the present invention to limitIn disclosed form. Selecting and describing embodiment is for better explanation principle of the present invention and realityBorder application, thus and make those of ordinary skill in the art can understand the present invention's design to be suitable for spyDetermine the various embodiment with various amendments of purposes. Scope of the present invention is by appended claimsDetermine.
Claims (8)
1. a cab signal lamp receiving system, comprises wireless transmit/receive units, processing unit and output unit,Wherein,
A) wireless transmit/receive units is responsible for entering the Internet by wireless network, receives signal lamp letterBreath issuing interface message is also delivered processing unit, sends out according to processing unit instruction simultaneouslyThe signal lamp STATUS ENQUIRY message of delivering letters;
B) processing unit, as the master controller of this device, is responsible for the position current according to vehicleCoordinate, the speed of a motor vehicle, directional information, and built-in electronic chart in advance, obtain carExercise junction ahead position coordinates and road name information, and encapsulated signal lamp shape accordinglyState query messages is delivered wireless transmit/receive units and is sent; Be responsible for resolving wireless receiving and dispatching simultaneouslyThe signal information issuing interface message that unit is delivered, obtains junction ahead signal lampStatus information and positional information, and deliver output unit;
C) output unit is with image, sound, electrical interface or above-mentioned any several combinationsMode is exported junction ahead signal lamp status information;
D) GPS unit, position coordinates, the speed of a motor vehicle, the direction of responsible real-time measuring vehicle, andTo record information reporting processing unit.
2. device according to claim 1, is characterized in that, described electrical interface mode is exported carThe real-time status information of row junction ahead signal lamp, refers to according to predetermined automobile control busInterface protocol, will send to other electronic control device for vehicle ECU in car after output information encapsulation.
3. according to the device described in claim 1-2 any one, it is characterized in that the real-time shape of signal lampState comprises that current state and the state in the current direction in the track of signal lamp control and respective direction cutChange countdown temporal information, wherein the current directional information in track comprises craspedodrome, turns left, turns right, fallsHeader.
4. according to the device described in claim 1-3 any one, it is characterized in that the position of described signal lampThe information of putting comprises the geographical position coordinates of signal lamp and the road directional information of signal management.
5. according to the device described in claim 1-4 any one, it is characterized in that described signal informationIssuing interface message comprises following field information: when sender's mark, recipient's mark, transmissionBetween the signal lamp quantity, the each signal lamp position that comprise in label, type of message, this message bag sitMark, the current direction of each signal lamp control, each signal lamp current state, each signal lamp are apart from next timeState variation time, each signal lamp control parameter.
6. according to the device described in claim 1-5 any one, it is characterized in that described transmitting time markSign, refer to time when signal information issuing interface message sends, processing unit is in analytic signalWhen lamp information issuing interface message, by according to the time difference between transmitting time and local zone time, rightThe signal lamp state switching countdown time in the junction ahead signal lamp status information of obtaining repaiiesJust, after compensation propagation delay time, result is delivered to output unit, and continue signal lamp state in this localitySwitch the self-clocking of countdown time.
7. according to the device described in claim 1-6 any one, it is characterized in that, described local zone time is logicalCross NTP NTP and network standard time synchronized.
8. according to the device described in claim 1-7 any one, it is characterized in that, described wireless network isRefer to any communication network that internet access service is provided with wireless mode, comprise WiFi network,WiMAX network, GPRS network, EDGE network, CDMA20001x network, CDMA2000EVDONetwork, WCDMA network, TD-SCDMA network, 4G network, LTE network and based on above-mentioned nothingThe evolvement network of spider lines.
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| CN106097739A (en) * | 2016-07-11 | 2016-11-09 | 浙江交通职业技术学院 | Traffic safety system for prompting based on smart mobile phone |
| CN106371310A (en) * | 2016-12-05 | 2017-02-01 | 山东大学 | Beidou based unified time-service system device of traffic signal lamps and working method of device |
| CN106453560A (en) * | 2016-10-14 | 2017-02-22 | 北京小米移动软件有限公司 | Time acquisition method and apparatus |
| CN108335511A (en) * | 2017-12-28 | 2018-07-27 | 路玲 | Intelligent traffic signal assists prior-warning device |
| CN108986506A (en) * | 2018-08-30 | 2018-12-11 | 武汉中科通达高新技术股份有限公司 | A kind of urban traffic intersection system for traffic guiding |
| CN109035832A (en) * | 2018-09-12 | 2018-12-18 | 清华大学苏州汽车研究院（吴江） | Signal lamp intersection intelligence traffic system based on V2X communication |
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Application publication date: 20160608 |