CN105761521A - Real-time traffic guidance roadside system and real-time traffic guidance method based on Internet of Vehicles - Google Patents
Real-time traffic guidance roadside system and real-time traffic guidance method based on Internet of Vehicles Download PDFInfo
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- CN105761521A CN105761521A CN201511013578.1A CN201511013578A CN105761521A CN 105761521 A CN105761521 A CN 105761521A CN 201511013578 A CN201511013578 A CN 201511013578A CN 105761521 A CN105761521 A CN 105761521A
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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
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
- G08G1/08—Controlling traffic signals according to detected number or speed of vehicles
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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
- G08G1/095—Traffic lights
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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
- G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
- G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
- G08G1/096783—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a roadside individual element
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Abstract
The invention discloses a real-time traffic guidance method based on Internet of Vehicles and a roadside system. The real-time traffic guidance roadside system of the invention comprises multiple roadside devices arranged at intervals along two sides of a road, intelligent traffic lamps arranged at an intersection, a vehicle-mounted terminal arranged on a vehicle, and a backstage control center, wherein each roadside device is in wireless communication connection with the backstage control center via a 3G/4G network; the roadside devices closed to the intelligent traffic lamps are in wireless communication connection with the intelligent traffic lamps; and the vehicle-mounted terminal of each vehicle driving in a coverage range of each roadside device is also in wireless communication connection with a corresponding roadside device via a wireless communication network. According to the roadside system of the invention, vehicle guidance and traffic lamp control can be realized, the display state of the traffic lamps can be adjusted according to factors such as a traffic flow and the environment in the Internet of Vehicles environment, the traffic jam phenomenon can be effectively lessened, the operational capacity of a trunk road is improved, and the operational capacity of the traffic system can be effectively improved.
Description
Technical field
The present invention relates to car networking technology, particularly relate to a kind of real-time traffic guidance guide passage side system based on car networking and real-time traffic abductive approach.
Background technology
Along with traffic problems are increasingly severe, only can not alleviate, with road improvement underlying hardware facility, the pressure that the motor vehicles sharply increased brings to road traffic system, traffic jam issue is more aobvious prominent, this brings immense pressure to road safety, road transport efficiency and urban sustainable development, not only cause economic loss, also induce vehicle accident simultaneously, cause other traffic problems such as increasing environmental pollution.And traffic system is as a considerably complicated system, list considers from vehicle aspect or road aspect, is all difficult to fundamentally solve this realistic problem.Therefore, based on how car networking combines the information on Che-Lu-backstage, it is achieved the synergism of each object in car networking, it is provided that Real-time Traffic Information, optimum driving path of making rational planning for, the intelligence degree improving city is contemporary science and technology Disciplinary Frontiers.
Summary of the invention
The technical problem to be solved is in that, a kind of real-time traffic guidance guide passage side system based on car networking and real-time traffic abductive approach are provided, it can provide optimum driving path for vehicle, thus real-time traffic guidance guide-car, and automatically control traffic lights, to strengthen the service ability of road traffic system.
In order to solve above-mentioned technical problem, the invention provides a kind of real-time traffic guidance guide passage side system based on car networking, comprising:
Multiple roadside devices, at least one intelligent traffic light, at least one is installed on the car-mounted terminal on vehicle, and background control center, wherein, multiple described roadside devices are disposed on the road both sides in each section, described intelligent traffic light is arranged on the crossing in each section, and each described roadside device is connected with described background control center each through cordless communication network, roadside device near described intelligent traffic light is connected with described intelligent traffic light radio communication, the car-mounted terminal sailing the vehicle in described roadside device coverage into is then connected with described roadside device radio communication by wireless communication network；Wherein,
Described car-mounted terminal is for gathering the vehicle data of corresponding vehicle, and is sent to corresponding described roadside device by wireless network；
Described roadside device is for gathering environmental data about, receive the car-mounted terminal that in its coverage, each vehicle is corresponding simultaneously and send the vehicle data of coming, and described vehicle data and described environmental data are sent to described background control center by wireless communication network；
Described background control center carries out comprehensive analysis processing for described vehicle data and the described environmental data that roadside device each described is sent respectively, and generate the guidance information of corresponding road section, again the described intelligent traffic light that described guidance information feeds back to correspondence by described roadside device is shown to control described intelligent traffic light, and feed back to each car-mounted terminal in described roadside device coverage to carry out vehicle guidance traveling.
Further, connected by radio communication between two adjacent roadside devices, and described roadside device is additionally operable to when it collects the vehicle data in its coverage and after environmental data about, judge whether there is specific event in described roadside device coverage according to the described vehicle data gathered and institute's environmental data analysis, if existing, then corresponding vehicle data and/or environmental data are carried out specific event labelling, and the vehicle data after labelling and/or environmental data are sent each car-mounted terminal to its coverage, background control center, and each adjacent roadside device.
Further, connected by radio communication between two adjacent roadside devices, and described roadside device is additionally operable to receive each adjacent roadside device and sends the vehicle data come and/or environmental data, and send the vehicle data analysis judgement come according to described adjacent roadside device by entering whether vehicle in described roadside device coverage has specific event from described adjacent roadside device institute coverage, if there being specific event, then corresponding vehicle data is carried out specific event labelling, and the described vehicle data after labelling is sent each car-mounted terminal to its coverage, background control center, and each adjacent roadside device.
Further, described roadside device includes CPU processing module, first communication module, data acquisition module, described data acquisition module is connected with described CPU processing module and described first communication module, and described CPU processing module is connected with described first communication module, wherein
Described data acquisition module is for gathering the environmental data around described roadside device, and is sent to described CPU processing module by described first communication module by described environmental data；
Vehicle data and described data acquisition module that described first communication module comes for receiving described car-mounted terminal to send send the environmental data of coming, and send to described CPU processing module；And receive the guidance information that described background control center is sent by cordless communication network, and described guidance information is sent to described CPU processing module；
Described CPU processing module sends next described vehicle data and environmental data for receiving described first communication module, and sent to described background control center by described first communication module after carrying out pretreatment, and reception processes described first communication module and sends described guidance information, and by described first communication module, described guidance information is forwarded to neighbouring described intelligent traffic light, each car-mounted terminal in described roadside device coverage, and each adjacent roadside device.
Further, described first communication module includes the serial interface being connected with described CPU processing module, 3G/4G interface, DSRC interface and blue tooth interface, described serial interface is also connected with described data detection module, described roadside device is connected with described background control center and described adjacent roadside device radio communication by described 3G/4G interface, is connected with described car-mounted terminal radio communication by described DSRC interface, is connected with described intelligent traffic light radio communication by described blue tooth interface.
Further, described intelligent traffic light includes data processing module, second communication module, LED display module, and described second communication module is all connected with described data processing module with described LED display module, wherein,
Described second communication module is connected with described first communication module radio communication, sends, by described first communication module, the guidance information of coming for receiving described roadside device；Described data processing module is analyzed processing for the described guidance information that described second communication module is received, and shows according to the described LED display module of analysis processing result control.
Based on the above-mentioned real-time traffic guidance guide passage side system based on car networking, present invention also offers a kind of real-time traffic abductive approach based on above-mentioned road side system, including step:
Roadside device gathers the vehicle data of all vehicles in its coverage and environmental data about, and is sent to background control center by cordless communication network；
Roadside device receives the guidance information that described background control center is fed back by cordless communication network, and described guidance information is sent the vehicle to its coverage to induce vehicle to travel by cordless communication network, described guidance information is sent to the described intelligent traffic light adjacent with described roadside device by cordless communication network simultaneously.
Further, described real-time traffic abductive approach further comprises the steps of:
While described roadside device is by the described vehicle data gathered and environmental data transmission extremely described background control center, the all vehicle datas gathered and environmental data are sent to the car-mounted terminal of each vehicle in its coverage by described roadside device by cordless communication network, and each adjacent roadside device；Receive each adjacent roadside device simultaneously and send the vehicle data come and/or environmental data.
Further, receive the next vehicle data of adjacent roadside device transmission and environmental data when described roadside device after, described real-time traffic abductive approach further comprises the steps of:
Send the vehicle data analysis come to judge according to described adjacent roadside device, it is about to whether the vehicle from described adjacent roadside device institute coverage enters in described roadside device coverage has specific event, if there being specific event, then carry out specific event labelling to described by entering the vehicle data that in described roadside device coverage, vehicle is corresponding, and by the car-mounted terminal of each vehicle in the vehicle data transmission after institute's labelling to described roadside device coverage, described background control center, and each adjacent roadside device.
Further, collecting the vehicle data in its overlay area when described roadside device and after environmental data, described real-time traffic abductive approach further comprises the steps of:
Judge according to the vehicle data gathered and/or environmental data analysis, whether specific event is had in described roadside device coverage, if there being specific event, then the vehicle data gathered and/or environmental data are carried out specific event labelling, and the described vehicle data after labelling and/or environmental data are delivered to the car-mounted terminal of each vehicle in its coverage, described background control center, and each adjacent roadside device.
Implement the embodiment of the present invention, have the advantages that
The present invention comes collection vehicle data and environmental data by roadside device, and send to background control center, the vehicle data and the environmental data that are gathered according to each roadside device by this background control center are comprehensively analyzed and make corresponding guidance information, and each vehicle and intelligent traffic light is fed back to by this roadside device, thus realizing the control of vehicle guidance and traffic lights, namely achieve under car networked environment according to vehicle flowrate, environment etc. are because usually adjusting traffic lights display state, achieve main stem vehicle number big time, the chance opening green light is just many, vehicle can pass through than relatively freely, can effectively slow down traffic jam phenomenon, improve the service ability of major trunk roads, also the service ability of traffic system can be effectively improved.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the functional block diagram of an embodiment of a kind of real-time traffic guidance guide passage side system based on car networking of the present invention；
Fig. 2 is the network architecture figure of a specific embodiment of the real-time traffic guidance guide passage side system of a kind of car networking of the present invention；
Fig. 3 is communication and the node deployment schematic diagram of the roadside device in response diagram 2 and intelligent traffic light；
Fig. 4 is the flow chart of an embodiment of a kind of real-time traffic abductive approach based on road side system of the present invention；
Fig. 5 is the flow chart of a concrete example of a kind of real-time traffic abductive approach based on road side system of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Definition according to car Networking industries Technological Innovation Strategy alliance, car networking is based on car Intranet, car border net and vehicle-mounted mobile the Internet, communication protocol and Data Exchange Standard according to agreement, at car-X(X: car, road, pedestrian and the Internet etc.) between, communicate wirelessly and the big grid of information exchange, it is that by the integrated network that intelligent traffic management, Intelligent Dynamic information service and Vehicular intelligentization control, is technology of Internet of things typical case's application in field of transportation system.nullWith the vehicle of the U.S.-infrastructure integration scheme (VehicleInfrastructureIntegration，VII) for example，This plan is devoted to utilize wireless communication technology to make the vehicle in traveling contact with the environment facies of surrounding more closely，Thus improving the safety of traffic system，Car-mounted terminal (OnBoardEquipment including intelligence，OBE)、Roadside device (RoadSideEquipment，And background information service centre etc. RSE)，Research is based on DSRC(DedicatedShortRangeCommunications，DSRC) truck traffic、Bus or train route communicates，Car and backstage based on 3G/4G、Road and backstage、Lu Yulu、The communication of car and people，Realize car、Road、Working in coordination with of backstage.Wherein, roadside device is the important component part in car networking, also it is the visual plant of the on-site data gathering of self-organizing network and data route in car networking, form a complete car networked system in conjunction with car-mounted terminal and background information service centre, be the indispensable part realizing car network savvy.
It addition, traffic lights is the important tool of management urban transportation, the time of overwhelming majority traffic lights all sets at present, no matter is wagon flow peak or low ebb, and the time of traffic lights all immobilizes；Also having some traffic lights can adjust the time according to the simple time period divided, but control to get up all to be not as flexible, this makes the adjustment of urban traffic can not reach optimum.Showing when major trunk roads vehicle is more after deliberation, major trunk roads vehicle average speed and flow under intelligent traffic light control are all higher than under the control of ordinary traffic lamp, and can reduce the meaningless waiting time of vehicle.In view of this, the invention provides a kind of when carrying out urban road transportation control and management, can according to the wagon flow situation of road, control traffic lights to show, and induce vehicle to travel, to strengthen system and the real-time traffic abductive approach of the service ability of road traffic system, below in conjunction with specific embodiments and the drawings, it is described in detail.
Embodiment one:
Referring to Fig. 1, for the present invention a kind of based on car networking can the functional block diagram of an embodiment of road side system of real-time traffic induction, by car-mounted terminal in the present embodiment, background control center, intelligent traffic light, roadside device etc. form a complete car networked system.Specifically, in the present embodiment, this road side system includes multiple roadside device 11, at least one intelligent traffic light 12, and a background control center 13, and multiple may be installed on vehicle, for the car-mounted terminal 14 of the vehicle data of Real-time Collection vehicle.Wherein, multiple roadside devices are disposed in each section road both sides, and intelligent traffic light 12 is then installed on crossroad or the intersection in each section.In the present embodiment, this roadside device 11 is for gathering environmental data about, and the car-mounted terminal 14 received in its coverage on each vehicle sends the vehicle data (Real-time Collection) of coming, and this vehicle data and environmental data are sent to background control center 13 by cordless communication network；This background control center 13 is comprehensively analyzed for vehicle data and the environmental data that the transmission of each roadside device is come, to generate the guidance information of corresponding road section (a certain specific road section that namely multiple roadside devices are completely covered), and shown to control described intelligent traffic light by the intelligent traffic light that this guidance information feeds back to correspondence by each roadside device, and feed back to each car-mounted terminal in this roadside device coverage to carry out inducing corresponding vehicle to travel.
In the present embodiment, this guidance information specifically includes the induction (as provided optimal path etc.) to vehicle traveling, the traffic light time control etc. to intelligent traffic light；And the vehicle data of this car-mounted terminal 14 Real-time Collection specifically can include license plate number, Vehicle Speed and positional information etc..
Referring to Fig. 2 and Fig. 3, in the present embodiment, this car-mounted terminal 14 is, by wireless network, the vehicle data of Real-time Collection sends the roadside device to its sailed into section, and receives the guidance information of roadside device feedback.Specifically, in the present embodiment, this car-mounted terminal 14 can adopt corresponding sensor to carry out the corresponding data of collection vehicle, as vehicle speed sensor gathers speed, and between this car-mounted terminal 14 and roadside device 11, adopt short-range wireless communication technologies, i.e. DSRC technology, carry out radio communication, namely it follows that this car-mounted terminal also includes DSRC module or DSRC interface, also can communicate either directly through this DSRC module or DSRC interface between certainly adjacent vehicle.
Referring to Fig. 1, in the present embodiment, this roadside device 11 includes CPU processing module, the first communication module being connected with this CPU processing module and data acquisition module, wherein,
This data acquisition module is for gathering the environmental data around this roadside device, and sends the environmental data gathered to CPU processing module；In the present embodiment, this environmental data specifically includes the wind speed around roadside device, wind direction, humiture and visibility etc., then correspondingly, this data review module can adopt corresponding sensor to realize, as air velocity transducer gathers air speed data, wind transducer gathers wind direction data, Temperature Humidity Sensor gathers humiture data, and visibility sensor gathers visibility data etc.；
This first communication module is then for being forwarded to this CPU processing module by the vehicle data that each car-mounted terminal transmission in this roadside device coverage comes, and receive the guidance information that background control center 13 is sent by cordless communication network, and under the control of CPU processing module, this guidance information is forwarded to each car-mounted terminal in intelligent traffic light and this roadside device coverage；Specifically, in the present embodiment, this first communication module specifically includes the serial interface being all connected with CPU processing module, DSRC interface, 3G/4G interface and blue tooth interface, this serial interface is also connected with data acquisition module, referring to Fig. 2 and Fig. 3, in the present embodiment, this CPU processing module carries out radio communication by this DSRC interface and car-mounted terminal 14, namely send, by each car-mounted terminal in this roadside device coverage of this DSRC interface, the vehicle data of coming, and by this DSRC interface the guidance information that background control center is fed back is transmitted to each car-mounted terminal in its coverage；Radio communication is carried out by 3G/4G interface and background control center 13, namely by this 3G/4G/ interface, the vehicle data removed after the pretreatment such as invalid data and noise reduction and environmental data are sent to background control center 13, and comprehensively analyzed the guidance information of generation by this 3G/4G/ interface background control center 13 according to vehicle data and environmental data；Carry out radio communication by blue tooth interface and intelligent traffic light 12, namely by this blue tooth interface, the guidance information that background control center 13 sends is transmitted to intelligent traffic light 12；In the present embodiment, it is contemplated that the restriction of DSRC communication distance, therefore when disposing roadside device, it is desirable to multiple roadside devices can be completely covered a certain specific road section, and each roadside device need to be deployed in the major trunk roads of this specific road section, crossroad, and keep at a certain distance away each other；
This CPU processing module sends the environmental data come carry out pretreatment for this first communication module sends the vehicle data come and data acquisition module, and sends pretreated vehicle data and environmental data to above-mentioned background control center；nullIn one embodiment，This CPU processing module specifically can adopt arm processor to realize，And it is provided with SQLite database in it，The vehicle data that its environmental data that can data acquisition module be gathered and first communication module receive carries out pretreatment，As removed invalid data，Noise reduction etc.，And by the 3G/4G interface of this first communication module, pretreated vehicle data and environmental data are sent to background control center，The vehicle data and the environmental data that are sent according to each roadside device by the 3G/4G interface background control center of first communication module are comprehensively analyzed simultaneously，The traffic guidance message obtained，And store，Then again through the blue tooth interface of first communication module, this traffic guidance message is transmitted to the intelligent traffic light of correspondence，And by the DSRC interface of first communication module, this guidance information is sent each car-mounted terminal to its coverage.Certainly, in the present embodiment, this CPU processing module also can to the various data gathered or receive and information, and data processed result carries out classified and stored, in order to background control center is called or the operation such as inquiry at any time.
Referring to Fig. 1, in the present embodiment, this intelligent traffic light 12 specifically includes data processing module, second communication module and LED display module, and this second communication module is connected with roadside device radio communication, and be also connected with data processing module, this data processing module is connected with LED display module, wherein
This second communication module sends, for the roadside device received near this intelligent traffic light, the guidance information of coming, and sends to data processing module；In one embodiment, this second communication module adopts bluetooth module, namely carries out radio communication by this bluetooth module with the blue tooth interface in above-mentioned first communication module；When being embodied as, it is contemplated that the restriction of Bluetooth communication distance, when disposing roadside device, in addition it is also necessary to consider to arrange that at least one roadside device is in the bluetooth communications range of this intelligent traffic light；
This data processing module is for being analyzed this guidance information processing, and shows according to the guidance information control LED display module after analyzing and processing；In one embodiment, this data processing module can adopt STM32 processor to realize, and this LED display module is then conventional LED, and its display state includes three kinds of states of red, yellow, and green.
Further, in each roadside device in this section, two adjacent roadside devices are by wireless, specifically, by the 3G/4G interface radio communication of first communication module between two adjacent roadside devices, thus realizing the route distribution of data, namely roadside device can pass through this first communication module 3G/4G interface and will receive, in its coverage, all car-mounted terminals send the vehicle data of each vehicle come, and/or the environmental data that this roadside device gathers is forwarded to adjacent roadside device, certainly send, also by this adjacent roadside device of 3G/4G interface, the corresponding guidance information of coming, and/or the environmental data that the vehicle data that in this adjacent roadside device coverage, all car-mounted terminals send and/or this adjacent roadside device gather.Certainly, may be used without optical fiber or other communication modes between two adjacent roadside devices.
Further, owing to ambient conditions is more severe, or there is accident such as vehicle accident, or emergency is the situation such as ambulance, police car such as, traffic all will be affected by these, therefore, in order to improve efficiency, also can being analyzed obtaining corresponding decision information according to corresponding vehicle data or environmental data, thus providing information reference for the vehicle in travelling, and making corresponding counter-measure.
In view of this, in the present embodiment, the vehicle data in its coverage is collected and after environmental data when roadside device, the CPU module of this roadside device is additionally operable to judge according to the vehicle data collected and/or environmental data analysis, whether specific event is there is in this roadside device coverage, such as adverse circumstances, accident and emergency, if existing, then corresponding vehicle data and/or environmental data are carried out labelling, and the vehicle data/environmental data after labelling is sent each car-mounted terminal to its coverage by first communication module, background control center, and each roadside device being adjacent.
nullIn like manner，Receive the next vehicle data of each adjacent roadside device transmission and/or environmental data when roadside device after，The CPU processing module of this roadside device is additionally operable to draw according to each vehicle data analysis that each adjacent roadside device sends and is about to enter the vehicle in this roadside device coverage in adjacent roadside device coverage，And determine whether whether this vehicle has been enter in this roadside device coverage，If being introduced into，Then directly judge whether this vehicle exists specific event according to this vehicle data analysis，Such as accident (such as vehicle accident)，Or emergency (such as police car or ambulance)，If there being specific event，Then corresponding vehicle data is carried out specific event labelling，Simultaneously，Vehicle data after labelling is sent each car-mounted terminal to this roadside device institute coverage by this DSRC interface，Sent to adjacent roadside device and background control center by 3G/4G interface，Otherwise it is labeled as other event types；If judging in the coverage that vehicle comes into this roadside device, then the DSRC interface either directly through the DSRC interface of first communication module car-mounted terminal corresponding to this vehicle communicates, obtain this car-mounted terminal and send the vehicle data of coming, and judge whether this vehicle exists specific event according to the vehicle data received, if existing, then carrying out labelling, otherwise this vehicle of labelling is other event types, and result is transmitted to background control center, proximate vehicle and each adjacent roadside device；If this vehicle has run out current roadside device network's coverage area, then disconnect the connection with this vehicle.
In the present embodiment, by being analyzed judging to by entering or having been enter into vehicle data corresponding to the vehicle in this roadside device scope, and labelling, then other modules are fed back to, thus can process accordingly according to the data of this labelling, such as, after the vehicle being about to the adjacent roadside device corresponding region of entrance in this roadside device corresponding region receives the vehicle data being labeled as accident, then can select a paths separately, or after background control center receives the data of labelling, a new induction information can be regenerated, and feed back to this vehicle to induce it to travel；Or after being labeled as emergency, other vehicles in this roadside device scope are actively that road etc. dodged by this vehicle.
In the present embodiment, owing to each roadside device is likely to the adjacent roadside device that should have two or more, therefore, when judging, can judge respectively, it is analyzed judging as first sent, according to current adjacent roadside device, the vehicle data come, then it is analyzed judging at the vehicle data that next adjacent roadside device is sent, can certainly directly according to the time order and function order receiving data, or directly after having received the vehicle data that the transmission of all adjacent roadside devices comes, it is uniformly carried out analysis and judges also to be appreciated that.
In another specific embodiment, this roadside device may also include power module, is connected with above-mentioned CPU processing module, is used for powering.
Embodiment two
Correspondingly, based on above-mentioned based on car networking can the road side system of real-time traffic induction, present invention also offers a kind of real-time guidance method based on road side system, with accompanying drawing, it be described in detail below in conjunction with specific embodiments.
Referring to Fig. 4, for the schematic flow sheet of an embodiment of a kind of real-time guidance method based on road side system of the present invention.This real-time traffic abductive approach of the present embodiment is based on the road side system in above-described embodiment, and its structure and position relationship repeat no more here, and specifically, this real-time traffic abductive approach includes step:
S11, roadside device gathers the vehicle data of all vehicles in its coverage and the environmental data around this roadside device, and is sent to background control center by cordless communication network.
In the present embodiment, roadside device communicates with adopting DSRC in corresponding scope between the car-mounted terminal of vehicle, and between each roadside device and background control center, and between adjacent two roadside devices, then adopt 3G/4G technical communication, then adopt Bluetooth technology communication between roadside device and its neighbouring intelligent traffic light.Due to the restriction of DSRC communication distance, therefore, the limited coverage area of each roadside device, the car-mounted terminal that namely roadside device is merely able to the vehicle sailed in its coverage carries out radio communication.
In the present embodiment, this vehicle data specifically includes license plate number, Vehicle Speed and positional information etc., and it is concurrently to be sent here by the car-mounted terminal collection being arranged on vehicle, specifically, corresponding sensor can be adopted to carry out collection vehicle data.
In the present embodiment, this environmental data specifically includes the wind speed around this roadside device, wind direction, humiture and visibility etc., then correspondingly, corresponding sensor can be adopted to realize data acquisition.
S13, roadside device receives the guidance information that background control center is fed back by cordless communication network, and guidance information is sent each car-mounted terminal to this roadside device coverage to induce vehicle to travel by cordless communication network, this guidance information is sent to adjacent intelligent traffic light by cordless communication network simultaneously.
nullIn the present embodiment，This background control center sends the vehicle data come and environmental data by receiving multiple roadside device，Due to the corresponding region of each roadside device，Therefore，After the vehicle data received and environmental data different，What namely receive is the overall vehicle data in whole section and overall environmental data，Then the vehicle data according to whole section and environmental data (i.e. the vehicle data of each roadside device transmission and environmental data) are carried out comprehensive analysis processing by background control center，Thus generating corresponding guidance information (this guidance information obtains) in combinations with existing various algorithms and strategy，This guidance information is fed back to each roadside device by cordless communication network (such as 3G/4G network) by this background control center again，After receiving this guidance information，Each roadside device then passes through cordless communication network (such as DSRC、Bluetooth、Radio frequency etc.) this guidance information is sent to its each all car-mounted terminals in coverage，Thus inducing each vehicle to travel，Certainly adjacent with intelligent traffic light roadside device also needs to this guidance information is sent to intelligent traffic light，To adjust display state or the display time etc. of intelligent traffic light.
In another embodiment, the vehicle data it gathered when roadside device and environmental data send to while background control center, also all vehicle datas of its collection and environmental data are sent to each car-mounted terminal in its coverage by cordless communication network (such as DSRC or 3G/4G), with adjacent roadside device, and receive adjacent roadside device send come vehicle data and environmental data.
In the present embodiment, limited coverage area due to each roadside device, therefore, in order to more fully understand the traffic conditions around this roadside device, this each roadside device also sends the vehicle data come and environmental data by receiving its adjacent roadside device, consequently facilitating obtain traffic conditions about according to the vehicle data in himself and adjacent area and environmental data, the ambient conditions of such as its adjacent roadside device overlay area and vehicle condition, and then for being about to enter adjacent roadside device overlay area from this roadside device overlay area, or it is about to enter the reference of vehicle one vehicle condition of offer of this roadside device overlay area and environment from adjacent roadside device overlay area.
Embodiment three
Owing to ambient conditions is more severe, or there is accident such as vehicle accident, or emergency is the situation such as ambulance, police car such as, traffic all will be affected by these, therefore, in order to improve efficiency, also can be analyzed obtaining corresponding situation according to corresponding vehicle data or environmental data thus providing information reference for the vehicle in travelling, and make corresponding counter-measure.Based on this, present invention also offers a kind of real-time traffic abductive approach, specifically, this real-time traffic abductive approach in the present embodiment includes each step in above-described embodiment two, the difference is that, in the present embodiment, collecting the vehicle data within the scope of it when roadside device and after environmental data, this real-time traffic abductive approach further comprises the steps of:
This roadside device judges according to the vehicle data collected in its coverage and/or environmental data analysis, whether specific event is there is in this roadside device coverage, such as adverse circumstances, accident and emergency, if existing, then corresponding vehicle data and/or environmental data are carried out labelling, and the vehicle data after labelling/environmental data is sent each car-mounted terminal to its coverage, background control center, and each roadside device being adjacent.
Further, receive the next vehicle data of adjacent roadside device transmission and environmental data when roadside device after, this traffic real-time guidance method further comprises the steps of:
nullRoadside device sends, according to each adjacent roadside device, the vehicle data that the vehicle data analysis come obtains being about to enter the vehicle in this roadside device coverage in each adjacent roadside device coverage，And judge whether this vehicle has been enter in this roadside device coverage，If being introduced into，The vehicle data analysis corresponding to this vehicle that then this roadside device comes according to the transmission of this adjacent roadside device judges，Whether there is specific event，If there being specific event，This vehicle data then carries out specific event labelling, and (as judged, this vehicle breaks down or vehicle accident，Then it is labeled as accident，As judged, this vehicle is police car or ambulance etc.，Then it is labeled as emergency)，And by the car-mounted terminal of each vehicle in the vehicle data transmission after labelling to its coverage，Background control center，And adjacent roadside device，Otherwise it is labeled as other event types；If judging, vehicle has been enter in this roadside device coverage, then directly communicate with the car-mounted terminal of this vehicle, and the car-mounted terminal receiving this vehicle sends the vehicle data of coming, judging whether specific event further according to this vehicle data analysis, if existing, then this vehicle data being carried out labelling, and the vehicle data after labelling is sent other each car-mounted terminals to roadside device coverage, background control center, and adjacent roadside device, be otherwise labeled as other event types.
In the present embodiment, by being analyzed judging to the vehicle data that the vehicle having been enter into or be about within the scope of entrance roadside device is corresponding, and labelling, then other modules are fed back to, thus can process accordingly according to the data of this labelling, such as, after the vehicle being about to the adjacent roadside device corresponding region of entrance in this roadside device corresponding region receives the vehicle data being labeled as accident, then can select a paths separately, or after background control center receives the data of labelling, a new induction information can be regenerated, and feed back to this vehicle to induce it to travel；Or after being labeled as emergency, other vehicles in this roadside device scope are actively that road etc. dodged by this vehicle.
In the present embodiment, owing to each roadside device is likely to the adjacent roadside device that should have two or more, therefore, when judging, can judge respectively, it is analyzed judging as first sent, according to current adjacent roadside device, the vehicle data come, then it is analyzed judging at the vehicle data that next adjacent roadside device is sent, can certainly directly according to the time order and function order receiving data, or directly after having received the vehicle data that the transmission of all adjacent roadside devices comes, it is uniformly carried out analysis and judges also to be appreciated that.
Below in conjunction with concrete example, this real-time traffic abductive approach of the present embodiment being described in detail, referring to Fig. 5, in the present embodiment, this real-time traffic abductive approach specifically includes step:
S51, gathers the environmental data around this roadside device, meanwhile, the vehicle data of all vehicles in Real-time Collection this roadside device coverage, perform step S52.
Due on the same day or the change of certain time environment weather etc. little, therefore, the interval of environmental data collecting during collection, can be pre-set.But, within a period of time, the vehicle flowrate in each roadside device coverage is continually changing, accordingly, it would be desirable to Real-time Collection enters the vehicle data in this regional extent.Specifically, the Real-time Collection of vehicle data is to carry out Real-time Collection by the car-mounted terminal being arranged on vehicle, and sends to corresponding roadside device.
S52, sends the vehicle data and environmental data that collect all vehicles to background control center, adjacent roadside device, and each vehicle in coverage；Receive adjacent roadside device simultaneously and send vehicle data and/or the environmental data that this adjacent roadside device gathers, perform step S53 and step S55.
S53, receives vehicle data that background control center sends according to each roadside device and the guidance information that environmental data analysis obtains, performs step S54.
S54, sends each vehicle to this roadside device coverage, intelligent traffic light, and adjacent roadside device by this guidance information, and terminates.
S55, when receiving each adjacent roadside device and sending the vehicle data come, send, according to each adjacent roadside device, the vehicle data come and judge in each adjacent roadside device coverage respectively, whether have and be about to enter the vehicle in this roadside device coverage, if having, then perform step S56, otherwise, perform step S57.
S56, it is judged that whether the vehicle that should be about to enter in this roadside device coverage comes in this roadside device coverage, if so, then performs step S58, otherwise, performs step S59.
S57, receives the vehicle data after each adjacent roadside device sends the renewal come, and performs step S55.
S58, directly communicates with the vehicle entered in this roadside device scope, obtains its vehicle data, perform step S59.
S59, judges whether specific event according to this vehicle data, if so, then performs step S510, otherwise, this vehicle data is labeled as other events.Here vehicle data includes two kinds, and one is that vehicle comes within the scope of this roadside device, then this vehicle data is that roadside device directly communicates with this vehicle acquired vehicle data；Another kind is that vehicle not yet enters within the scope of this roadside device, then this vehicle data is the adjacent roadside device transmission of its correspondence.
S510, carries out specific event labelling to this vehicle data, performs step S511.
S511, is sent to each vehicle in this roadside device coverage by the vehicle data after labelling, each adjacent roadside device, and background control center, terminates.Above disclosed it is only present pre-ferred embodiments, certainly the interest field of the present invention can not be limited with this, one of ordinary skill in the art will appreciate that all or part of flow process realizing above-described embodiment, and according to the equivalent variations that the claims in the present invention are made, still fall within the scope that invention is contained.
Claims (10)
1. the real-time traffic guidance guide passage side system based on car networking, it is characterized in that, including: multiple roadside devices, at least one intelligent traffic light, at least one is installed on the car-mounted terminal on vehicle, and background control center, wherein, multiple described roadside devices are disposed on the road both sides in each section, described intelligent traffic light is arranged on the crossing in each section, and each described roadside device is connected with described background control center each through cordless communication network, roadside device near described intelligent traffic light is connected with described intelligent traffic light radio communication, the car-mounted terminal sailing the vehicle in described roadside device coverage into is then connected with described roadside device radio communication by wireless communication network；Wherein,
Described car-mounted terminal is for gathering the vehicle data of corresponding vehicle, and is sent to corresponding described roadside device by wireless network；Described roadside device is for gathering environmental data about, receive the car-mounted terminal that in its coverage, each vehicle is corresponding simultaneously and send the vehicle data of coming, and each described vehicle data and described environmental data are sent to described background control center by wireless communication network；
Described background control center carries out comprehensive analysis processing for described vehicle data and the described environmental data that roadside device each described is sent respectively, and generate the guidance information of corresponding road section, described guidance information is fed back to by described roadside device the described intelligent traffic light of correspondence again, and feeds back to each car-mounted terminal in described roadside device coverage to carry out vehicle guidance traveling.
2. the real-time traffic guidance guide passage side system based on car networking as claimed in claim 1, it is characterised in that connected by radio communication between two adjacent roadside devices, and,
Described roadside device is additionally operable to when it collects the vehicle data in its coverage and after environmental data about, judge whether there is specific event in described roadside device coverage according to the described vehicle data gathered and institute's environmental data analysis, if existing, then corresponding vehicle data and/or environmental data are carried out specific event labelling, and the vehicle data after labelling and/or environmental data are sent to described background control center, each adjacent roadside device, and each car-mounted terminal in described roadside device coverage.
3. the real-time traffic guidance guide passage side system based on car networking as claimed in claim 1 or 2, it is characterised in that connected by 3G/4G multi-network wireless communications between two adjacent roadside devices, and,
Described roadside device is additionally operable to receive each adjacent roadside device and sends the vehicle data come and/or environmental data, and send, according to described adjacent roadside device, the vehicle data of coming, analyze and judge whether the vehicle being about to from described adjacent roadside device coverage enters in described roadside device coverage has specific event, if there being specific event, then corresponding vehicle data is carried out specific event labelling, and the described vehicle data after labelling is sent to described background control center, each adjacent roadside device, and each car-mounted terminal in described roadside device coverage.
4. the real-time traffic guidance guide passage side system based on car networking as claimed in claim 3, it is characterized in that, described roadside device includes CPU processing module, first communication module, data acquisition module, described data acquisition module is connected with described CPU processing module and described first communication module, and described CPU processing module is connected with described first communication module, wherein
Described data acquisition module is for gathering the environmental data around described roadside device, and is sent to described CPU processing module by described first communication module by described environmental data；
Vehicle data and described data acquisition module that described first communication module comes for receiving described car-mounted terminal to send send the environmental data of coming, and send to described CPU processing module；And receive the guidance information that described background control center is sent by cordless communication network, and described guidance information is sent to described CPU processing module；
Described CPU processing module sends next described vehicle data and environmental data for receiving described first communication module, and sent to described background control center by described first communication module after carrying out pretreatment, and reception processes described first communication module and sends described guidance information, and by described first communication module, described guidance information is forwarded to neighbouring described intelligent traffic light, each car-mounted terminal in described roadside device coverage, and each adjacent roadside device.
5. the real-time traffic guidance guide passage side system of car networking as claimed in claim 4, it is characterized in that, described first communication module includes the serial interface being connected with described CPU processing module, 3G/4G interface, DSRC interface and blue tooth interface, described serial interface is also connected with described data detection module, described roadside device is connected with described background control center and described adjacent roadside device radio communication by described 3G/4G interface, it is connected with described car-mounted terminal radio communication by described DSRC interface, it is connected with described intelligent traffic light radio communication by described blue tooth interface.
6. the real-time traffic guidance guide passage side system based on car networking as claimed in claim 4, it is characterized in that, described intelligent traffic light includes data processing module, second communication module, LED display module, described second communication module is all connected with described data processing module with described LED display module, wherein
Described second communication module is connected with described first communication module radio communication, sends, by described first communication module, the guidance information of coming for receiving described roadside device；Described data processing module is analyzed processing for the described guidance information that described second communication module is received, and shows according to the described LED display module of analysis processing result control.
7. the real-time traffic abductive approach based on road side system, it is characterised in that described road side system is the real-time traffic guidance guide passage side system based on car networking as described in any one in claim 1 to 6, then described real-time guidance method includes step:
Roadside device gathers the vehicle data of all vehicles in its coverage and environmental data about, and is sent to background control center by cordless communication network；
Roadside device receives the guidance information that described background control center is fed back by cordless communication network, and described guidance information is sent the vehicle to its coverage to induce vehicle to travel by cordless communication network, described guidance information is sent to the described intelligent traffic light adjacent with described roadside device by cordless communication network simultaneously.
8. a kind of real-time traffic abductive approach based on road side system as claimed in claim 7, it is characterised in that further comprise the steps of:
While described roadside device is by the described vehicle data gathered and environmental data transmission extremely described background control center, the all vehicle datas gathered and environmental data are sent to the car-mounted terminal of each vehicle in its coverage by described roadside device by cordless communication network, and each adjacent roadside device；Receive each adjacent roadside device simultaneously and send the vehicle data come and/or environmental data.
9. a kind of real-time traffic abductive approach based on road side system as claimed in claim 7, it is characterised in that when described roadside device receives after adjacent roadside device sends the vehicle data come and environmental data, further comprise the steps of:
Send, according to described adjacent roadside device, the vehicle data analysis come and judge whether the vehicle being about to enter in described roadside device coverage in described adjacent roadside device institute coverage has specific event, if there being specific event, then carry out specific event labelling to described by entering the vehicle data that in described roadside device coverage, vehicle is corresponding, and by the car-mounted terminal of each vehicle in the vehicle data transmission after institute's labelling to described roadside device coverage, described background control center, and each adjacent roadside device.
10. a kind of real-time traffic abductive approach based on road side system as claimed in claim 7, it is characterised in that collect the vehicle data in its overlay area when described roadside device and after environmental data, further comprise the steps of:
Judge according to the vehicle data gathered and/or environmental data analysis, whether specific event is had in described roadside device coverage, if there being specific event, then the vehicle data gathered and/or environmental data are carried out specific event labelling, and the described vehicle data after labelling and/or environmental data are sent the car-mounted terminal of each vehicle to its coverage, described background control center, and each adjacent roadside device.
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