CN104900056A - Traffic situation sensing method and system of vehicle-road cooperation type - Google Patents
Traffic situation sensing method and system of vehicle-road cooperation type Download PDFInfo
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- CN104900056A CN104900056A CN201510246340.7A CN201510246340A CN104900056A CN 104900056 A CN104900056 A CN 104900056A CN 201510246340 A CN201510246340 A CN 201510246340A CN 104900056 A CN104900056 A CN 104900056A
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Abstract
The invention provides a traffic situation sensing method and system of a vehicle-road cooperation type, and the method comprises the steps: obtaining the position and speed information of the vehicle through the vehicle; obtaining the information of surrounding vehicles through near-field wireless communication and the vehicle, and transmitting the comprehensive vehicle information of the vehicle; arranging wireless hot spots on a road, enabling the wireless hot spots to be interconnected, enabling the vehicles passing by the hot spots to be connected with the hot spots and to achieve data interaction with a traffic management center, receiving the road condition information broadcasted by the hot spots, and transmitting the vehicle information to the hot spots; combining all vehicle information obtained by the vehicle to calculate a local traffic situation, combining all vehicle information obtained by the traffic management center in the whole range, and calculating the overall traffic situation through the traffic management center, thereby enabling the vehicle and the traffic management center to achieve the real-time sensing of the traffic situation.
Description
Technical field
The present invention relates to intelligent transportation field, be specifically related to the method and system of the traffic situation perception that a kind of bus or train route is worked in coordination with.
Background technology
Traffic situation perception is the important research content in intelligent transportation field, and its object comprises the real-time road traffic condition of acquisition, finds out the reason etc. that congestion in road occurs.When especially getting congestion, very first time perception jam situation and the occurrence cause blocked up, to traffic control department and other traffic participant all extremely important.
The perception realizing traffic situation is relatively easy, because the generation of any traffic congestion has traffic participant at the scene, but how by these information, fast and effeciently sending traffic control center to, and send the traffic participant at rear to, is then a difficult problem.Bus or train route coordination technique can realize the transmission of above-mentioned information, but because the reason of road fitting limit and cost, can not cover the optional position of road.
For the traffic participant fast and intelligently perception upcoming traffic situation making rear, for making the traffic control center very first time obtain traffic situation, the invention provides the method and system of the traffic situation perception that a kind of bus or train route is worked in coordination with.
Summary of the invention
The invention provides the method for the traffic situation perception that a kind of bus or train route is worked in coordination with, the traffic participant at rear and the traffic control center very first time can obtain traffic situation.
To achieve these goals, the invention provides the method for the traffic situation perception that a kind of bus or train route is worked in coordination with, described method comprises:
The information such as the position of vehicle acquisition self and the speed of a motor vehicle;
Vehicle obtains the information of vehicles of other vehicle around;
Vehicle periodically sends comprehensive vehicle information;
Road arranges hotspot and interconnected, the vehicle through heat spot connects focus;
Connect the traffic information of the vehicle receiver focus broadcast of focus, send information of vehicles to focus;
Vehicle calculates local traffic situation;
Traffic control center calculation overall situation traffic situation.
The information such as the position of described vehicle acquisition self and the speed of a motor vehicle, comprising:
Vehicle passes through vehicle carried pick device, the current location of Real-time Obtaining vehicle and time;
Vehicle, by the position that repeatedly obtains and time, estimates the speed of a motor vehicle of vehicle.
Described vehicle obtains the information of vehicles of other vehicle around, comprising:
Vehicle, by low coverage wireless communication technology, sets up interim wireless data link with surrounding vehicles;
Vehicle is by described interim wireless data link, and receive the comprehensive vehicle information that all vehicles around send, comprehensive vehicle packets of information is containing himself information of vehicles, and other information of vehicles that wherethrough was managed;
Described information of vehicles, comprises the information such as vehicles identifications, the speed of a motor vehicle, position, time, road conditions phrase;
Described vehicles identifications is the unique identification of vehicle, is the mark distinguishing vehicle.
Preferably, described road conditions phrase, can for representing the code of road conditions.
Described vehicle obtains the information of vehicles of other vehicle around, also comprises:
When vehicle is through the hotspot on road and after connecting with this focus, the traffic information of this focus broadcast will be received;
Described traffic information is the integrated information after traffic control center processing, comprises information of vehicles and other describes the information of road conditions.
Described vehicle periodically sends comprehensive vehicle information, comprising:
All information of vehicles received merge by vehicle;
Information of vehicles in oneself working direction is formed comprehensive vehicle information by vehicle, externally sends.
Described external transmission, comprising:
Vehicle is by described interim wireless data link, and timing outwards sends comprehensive vehicle information;
When vehicle is through the hotspot on wireless road and after connecting with this focus, send comprehensive vehicle information to this focus.
Preferably, the information of vehicles in oneself working direction is formed comprehensive vehicle information by described vehicle, comprising:
Only select and self distance information of vehicles within the specific limits;
Only select the information of vehicles identical with self direction;
Only select and current time information of vehicles within the specific limits.
Preferably, the information of vehicles in oneself working direction is formed comprehensive vehicle information by described vehicle, also comprises:
The length of comprehensive vehicle information will be controlled in certain limit;
Described scope all can be arranged.
Described road arranges hotspot and interconnected, the vehicle through heat spot connects focus, comprising:
Important site setting hotspot on road;
Be interconnected by existing manner between hotspot, form road network;
Traffic control center is connected into described road network by existing manner;
Through the vehicle of heat spot, initiatively connect focus, set up bus or train route wireless link;
Described focus is the access point connected for wireless network.
The traffic information of the vehicle receiver focus broadcast of described connection focus, sends information of vehicles to focus, comprising:
Set up the vehicle of bus or train route wireless link with road focus, receive the traffic information of focus broadcast; The comprehensive vehicle information of oneself is sent to focus;
Traffic control center receives the information of vehicles of the vehicle transmission being connected to focus from road network, by the traffic situation information that road network is relevant near the vehicle transmission focus at focus place.
Preferably, the traffic information of the vehicle receiver focus broadcast of described connection focus, sends information of vehicles to focus, also comprises:
Vehicle can optionally inquire front traffic information, and focus is replied;
Focus can optionally inquire associated vehicle information, and vehicle is replied;
Described focus response can be the response of traffic control centring system at focus place.
Described vehicle calculates local traffic situation, comprising:
All information of vehicles received merge by vehicle;
Vehicle forms the local traffic situation relevant to oneself.
Described traffic control center calculation overall situation traffic situation, comprising:
Traffic control center merges the rolling stock information received in global scope;
The travel speed of vehicle in global scope, average velocity, congested link etc. are formed centrally at interior overall traffic situation in traffic control.
For achieving the above object, the system of the traffic situation perception that the present invention also provides a kind of bus or train route to work in coordination with, described system comprises:
Vehicle on-board system, for determining, processing and receive and dispatch information of vehicles, user's input and display etc.;
Road network system, for the structure of road network and hotspot;
Traffic control centring system, for the process of traffic control centre data.
Described vehicle on-board system, comprising:
The position that vehicle Real-time Obtaining vehicle is current and time;
Vehicle by the position that repeatedly obtains and time, the speed of a motor vehicle of estimation vehicle;
Vehicle, by low coverage wireless communication technology, sets up interim wireless data link with surrounding vehicles;
Vehicle, by interim wireless data link, receives the information of vehicles of surrounding vehicles;
Vehicle accepts user's input, forms comprehensive vehicle data, by the vehicle transmission towards periphery of interim wireless data link;
Vehicle display traffic information.
Described road network system, comprising:
Hotspot is installed in vital point position on road;
Realize interconnected by existing network technology between hotspot, form road network;
Traffic control centring system access road network;
Vehicle in this hotspot range, connects with focus;
The vehicle connected with focus, sends vehicle comprehensive information to network, receives the traffic information of Web Publishing.
Described traffic control centring system, comprising:
Receive the vehicle comprehensive information issued through hotspot place vehicle;
Comprehensively all information of vehicles and traffic information, form the traffic in global scope and traffic information;
Vehicle to hotspot place generates the traffic information relevant with issuing this location.
The system of the traffic situation perception that a kind of bus or train route provided by the invention is worked in coordination with, by self vehicle position and speed perception, by data sharing and other information of vehicles of convergence perception, sends traffic control center to there being the place of hotspot; Traffic information also can be issued to vehicle in traffic control center; Overall traffic situation can be grasped in real time in traffic control center, and vehicle individual also can know the traffic situation of local, thus realizes the collaborative traffic situation perception of bus or train route.
Beneficial effect of the present invention comprises:
1, vehicle is by data sharing and convergence, can perception and obtain front local traffic information;
2, traffic control center is by hotspot, can obtain these local traffic information of vehicle, thus form overall traffic situation; And traffic control center by traffic information real-time informing to vehicle, can realize the traffic situation perception that bus or train route is collaborative.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the method for the traffic situation perception that a kind of bus or train route that the embodiment of the present invention one provides is worked in coordination with.
Fig. 2 is the schematic diagram of the system of the traffic situation perception that a kind of bus or train route that the embodiment of the present invention two provides is worked in coordination with.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, clear, complete description is carried out to technical scheme of the present invention, obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiments.
Embodiment one
Fig. 1 is the embodiment of the present invention one, the schematic diagram of the method for the traffic situation perception that a kind of bus or train route is worked in coordination with.As shown in Figure 1, the method comprises the following steps.
101, vehicle obtains the information such as the position of vehicle and the speed of a motor vehicle;
Use the satellite positioning tech such as GPS, the Big Dipper, can Real-time Obtaining oneself current location and time; Under normal circumstances, obtain frequency and can reach 1 time or faster per second;
Vehicle, by the position that repeatedly obtains and time, can estimate the average speed during this period of time; Concrete number of times can according to circumstances set, and as under normal circumstances, can go out automobile's instant velocity as self speed of a motor vehicle using the position of nearest 2 acquisitions and time estimation, the average speed of the automobile's instant velocity that also can calculate using nearest 5 times is as the current speed of a motor vehicle.
102, vehicle obtains the information of vehicles of other vehicle around;
Utilize existing low coverage wireless communication technology, as WIFI, bluetooth, ZigBee etc., wireless self-organization network can be built realize temporary wireless communication within the scope of hundreds of meters; Also other car networking technology can be utilized to realize low coverage temporary wireless communication;
Described temporary wireless communication can be point-to-point radio communication, can be the wireless communication having network management;
When the speed of a motor vehicle is very fast, above-mentioned Wi-Fi channel transmission quality may be affected, but can reduce impact by reducing the modes such as transmission frequency;
Vehicle utilizes above-mentioned interim wireless channel, can obtain the comprehensive vehicle information that other vehicle around sends, comprise himself information of vehicles, and other information of vehicles that wherethrough was managed;
Wherein information of vehicles, comprises the information such as vehicles identifications, the speed of a motor vehicle, position, time, road conditions phrase; Wherein vehicles identifications is the unique identification of vehicle; Road conditions phrase is that user provides, in order to describe the phrase of current traffic condition, or agreed code.
103, vehicle periodically sends comprehensive vehicle information;
Vehicle utilizes above-mentioned wireless communication link, and timing outwards sends comprehensive vehicle information.
Comprehensive vehicle information be vehicle through preferred information of vehicles, the vehicle of selection comprises:
10 ~ 50 kilometers, front and the vehicle within the scope of 500 meters, rear; This threshold value can be arranged voluntarily;
With oneself other vehicle equidirectional, usually there is no reference significance because reciprocal; But also can arrange;
Other vehicle in nearest 30 seconds, the information of vehicles of time-out is perhaps nonsensical; This threshold value can be arranged voluntarily.
The frequency of timed sending can according to circumstances set, and as under normal circumstances, can be set to 1 second 1 time;
According to self speed of a motor vehicle, by adjustment send the frequency, as self speed of a motor vehicle reach 30 kilometers per hour time, reduce transmission frequency be 5 seconds 1 time; As faster as per hour in reached 50 kilometers in the speed of a motor vehicle, stop sending; These numerical value all can be arranged.
104, road is arranged interconnected hotspot, the vehicle of process is connected with it;
Important site setting hotspot on road; To be only people be in so-called vital point position thinks important some position can not have the choice criteria of fixing;
Hotspot can be the WIFI standard focus meeting 802.11b/g/n/ac agreement, also can be the hotspot of other type;
, as 3G/4G wireless mode, or 100,000,000/gigabit Ethernet network mode realizes connecting, and forms road network between hotspot by existing manner; Traffic control center is connected into road network;
Through the vehicle of heat spot, initiatively connect focus, set up bus or train route wireless link with it;
Connect the vehicle of focus, receive the road information that focus is issued, send the comprehensive vehicle information of oneself to focus.
105, vehicle calculates local traffic situation;
Vehicle, can the traffic situation in real-time judge current point and front by the information of self speed of a motor vehicle obtained, neighbouring vehicle.
106, traffic control center calculation overall situation traffic situation;
Traffic control center is worked in coordination with by bus or train route, obtains the information of vehicles in global scope, thus can obtain the average speed in global scope, block up position and the information such as time of blocking up, and can know the traffic situation in global scope through process.
Embodiment two
Fig. 2 is the embodiment of the present invention two, the system schematic of the traffic situation perception that a kind of bus or train route is worked in coordination with.As shown in Figure 2, this system comprises following subsystem.
201, onboard subsystem, comprising:
Location and processing unit: use the satellite positioning device such as GPS, the Big Dipper, the current location of Real-time Obtaining vehicle and time; By the position that repeatedly obtains and time, the average speed during this period of time can be estimated, as can using the average speed of nearest 5 seconds as the current speed of a motor vehicle; All vehicle datas received are processed;
Radio network unit: utilize existing WIFI, bluetooth, ZigBee to build self-organization network, or use various car networking technology, realizes closely as the wireless data communications within the scope of hundred meter levels; Interim wireless data link is set up with surrounding vehicles; Receive the data of surrounding vehicles; Vehicle sends comprehensive vehicle data towards periphery;
User's input-output unit: accept user's input, display traffic information.
202, road network subsystem, comprising:
Access point unit: the WIFI hotspot as met the consensus standards such as 802.11b/g/n/ac is installed in the vital point position on road;
Network element: by existing network technology as 3G/4G wireless mode, or 100,000,000/gigabit Ethernet network mode, what realize between each hotspot is interconnected, forms road network, traffic control center access road network;
Information exchange unit: the vehicle in this hotspot range, initiatively realizes the wireless connections with focus; Vehicle, once connect with focus, sends vehicle comprehensive information to network at once; And receive the traffic information that road network is issued.
203, traffic control center subsystem, comprising:
Information exchange unit: access road network, receives the information that each focus place vehicle sends, and sends information to each hotspot vehicle;
Information process unit: each information received is carried out overall treatment;
Information issue unit: generate the traffic information that the vehicle to hotspot place is issued.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the bus or train route method of traffic situation perception of working in coordination with, is characterized in that, comprising:
The information such as the position of vehicle acquisition self and the speed of a motor vehicle;
Vehicle obtains the information of vehicles of other vehicles around;
Vehicle periodically sends comprehensive vehicle information;
Road arranges hotspot and interconnected, the vehicle through heat spot connects focus;
Connect the traffic information of the vehicle receiver focus broadcast of focus, send information of vehicles to focus;
Vehicle calculates local traffic situation, traffic control center calculation overall situation traffic situation.
2. the bus or train route according to claim 1 method of traffic situation perception of working in coordination with, is characterized in that, vehicle obtains the information such as self position and the speed of a motor vehicle, comprising:
Vehicle passes through vehicle carried pick device, the current location of Real-time Obtaining vehicle and time;
Vehicle, by the position that repeatedly obtains and time, estimates the speed of a motor vehicle of vehicle.
3. the bus or train route according to claim 1 method of traffic situation perception of working in coordination with, it is characterized in that, vehicle obtains the information of vehicles of other vehicles around, comprising:
Vehicle, by low coverage wireless communication technology, sets up interim wireless data link with surrounding vehicles;
Vehicle is by described interim wireless data link, and receive the comprehensive vehicle information that all vehicles around send, comprehensive vehicle packets of information is containing himself information of vehicles, and other information of vehicles that wherethrough was managed; Information of vehicles, comprises the information such as vehicles identifications, the speed of a motor vehicle, position, time, road conditions phrase; Vehicles identifications is the unique identification of vehicle, is the mark distinguishing vehicle; Road conditions phrase, can for representing the code of road conditions.
4. the bus or train route according to claim 1 method of traffic situation perception of working in coordination with, it is characterized in that, vehicle periodically sends comprehensive vehicle information, comprising:
All information of vehicles received merge by vehicle;
Information of vehicles in oneself working direction is formed comprehensive vehicle information by vehicle;
Vehicle is by interim wireless data link, and timing outwards sends comprehensive vehicle information;
When vehicle is through the hotspot on wireless road and after connecting with this focus, send comprehensive vehicle information to this focus;
Integrated information only includes and self distance information of vehicles within the specific limits;
Integrated information only includes the information of vehicles identical with self direction;
Integrated information only includes and current time information of vehicles within the specific limits;
The length of comprehensive vehicle information will be controlled in certain limit.
5. the bus or train route according to claim 1 method of traffic situation perception of working in coordination with, is characterized in that, road arranges hotspot and interconnected, and the vehicle through heat spot connects focus; Comprise:
Important site setting hotspot on road, hotspot is the access point connected for wireless network;
Be interconnected by existing manner between hotspot, form road network;
Traffic control center is connected into road network by existing manner;
Through the vehicle of heat spot, initiatively connect focus, set up bus or train route wireless link;
Set up the vehicle of bus or train route wireless link with road focus, receive the traffic information of focus broadcast; The comprehensive vehicle information of oneself is sent to focus;
The information of vehicles that the vehicle that traffic control receive centre is connected to focus place sends, the vehicle to focus place sends traffic situation information relevant near focus.
6. the bus or train route according to claim 1 method of traffic situation perception of working in coordination with, it is characterized in that, vehicle calculates local traffic situation, and traffic control center calculation overall situation traffic situation, comprising:
All information of vehicles received merge by vehicle;
Vehicle forms the local traffic situation relevant to oneself;
Traffic control center merges the rolling stock information received in global scope;
The travel speed of vehicle in global scope, average velocity, congested link etc. are formed centrally at interior overall traffic situation in traffic control.
7. the bus or train route system of traffic situation perception of working in coordination with, is characterized in that, comprising:
Vehicle on-board system, for determining, processing and receive and dispatch information of vehicles, user's input and display etc.;
Road network system, for the structure of road network and hotspot;
Traffic control centring system, for the process of traffic control centre data.
8. the bus or train route according to claim 7 system of traffic situation perception of working in coordination with, is characterized in that, vehicle on-board system, for determining, processing and receive and dispatch information of vehicles, user's input and display etc., comprising:
The position that vehicle Real-time Obtaining vehicle is current and time;
Vehicle by the position that repeatedly obtains and time, the speed of a motor vehicle of estimation vehicle;
Vehicle, by low coverage wireless communication technology, sets up interim wireless data link with surrounding vehicles;
Vehicle, by interim wireless data link, receives the information of vehicles of surrounding vehicles;
Vehicle accepts user's input, forms comprehensive vehicle data, by the vehicle transmission towards periphery of interim wireless data link;
Vehicle display traffic information.
9. the bus or train route according to claim 7 system of traffic situation perception of working in coordination with, is characterized in that, road network system, for the structure of road network and hotspot, comprising:
hotspot is installed in vital point position on road;
Realize interconnected by existing network technology between hotspot, form road network;
Traffic control centring system access road network;
Vehicle in this hotspot range, connects with focus;
The vehicle connected with focus, sends vehicle comprehensive information to network, receives the traffic information of Web Publishing.
10. the bus or train route according to claim 7 system of traffic situation perception of working in coordination with, is characterized in that, traffic control centring system, for the process of traffic control centre data, comprising:
Receive the vehicle comprehensive information issued through hotspot place vehicle;
Comprehensively all information of vehicles and traffic information, form the traffic in global scope and traffic information;
Vehicle to hotspot place generates the traffic information relevant with issuing this location.
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| CN115297143A (en) * | 2022-07-28 | 2022-11-04 | 东风汽车集团股份有限公司 | Internet of vehicles data situation sensing method and system based on network security |
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Application publication date: 20150909 |