Congestion detection means and method based on DSRC
Technical field
The present invention relates to intelligent transportation system and car networking field, in particular it relates to which a kind of be based on DSRC
The congestion detection means and method of (DSRC, Dedicated Short Range Communications).
Background technology
With the rapid development of China's communication, vehicle guaranteeding organic quantity increases sharply, and China's road congestion conditions are particularly big
The road congestion conditions getting worse in city, pressure is more and more big to caused by urban traffic control.Congestion in road problem into
To restrict economic development, one of horizontal factor of people's lives happiness is reduced.
The method of traffic congestion detection at present mainly has:1. Coil Detector method, 2. Floating Car detection method, 3. video monitoring examine
Survey method.Coil detecting system needs to destroy pavement construction when installing, if carrying out, large-scale application cost is higher, and service life has
Limit, maintenance is carried out in high speed and replaces inconvenience.Floating car data is to be distributed in the dynamic vehicle position of city everywhere by obtaining
Information back is to data processing centre, then the heart carries out going deep into working process acquisition in data handling.Shortcoming is on city
The vehicle GPS passback dynamic location information of the taxi of ten thousand is too big to the cost of processing center, and the GPS of each car is believed
The accuracy requirement of the return data of breath is very high, operation inconvenience.It is right due to the raising of video resolution for video detection method
The requirement of image procossing is increased, and very big pressure is caused to processing system.In addition under the scene of highway, camera can
Detection is limited in scope, therefore in order to which effective detection congestion or other traffic accidents, the quantity of camera arrangement can become very more,
So as to cause the rising of testing cost.
It is CN104680819A through retrieval, such as China Patent Publication No., a kind of anti-congestion method of road of the invention and its is
System, including:Establish connection;Platform preset the first pickup area scope, the second pickup area scope, speed data collection time segment value,
The first boundary value of the gentle slow train speed of vehicle numerical value, unimpeded speed and slowly the second boundary value of speed and congestion speed;Detection
Judge speed and positional information, and speed and positional information are uploaded to platform;Detection of platform analyzes speed data collection time segment value
It is interior, the first car-mounted terminal numerical value through the first pickup area, the second car-mounted terminal numerical value through the second pickup area, and according to point
Result generation instruction is analysed, and judges road congestion conditions, and will be instructed and judged result is sent to and traffic lights end and vehicle-mounted end
End;Terminal shows road congestion conditions;Traffic lights end adjusts current direction according to the instruction.But will respectively it adopted in the patent
In collection region the information that gathers pass back platform cost it is too big, and the accuracy of the return data to the positional information of each car
It is it is required that very high.If the positional information passed back has error, platform generation error will be caused to instruct, aggravate congestion in road phenomenon.
In China, DSRC technology is commonly used in electric non-stop toll (ETC) system, but is not yet based at present
DSRC congestion ahead detecting system.
The content of the invention
For in the prior art the defects of, it is an object of the invention to provide a kind of congestion ahead based on DSRC
Detection means and method, congestion information can be accurately obtained, meets the needs of traffic monitoring, the technology development for meeting bus or train route collaboration becomes
Gesture.
According to an aspect of the present invention, there is provided a kind of congestion ahead detection means based on DSRC, including
Board units on vehicle, the board units include the first data processing module, the first DSRC transceiver communication modules,
First GPS module, from car information acquisition module and HMI module;Wherein:
First GPS module, for obtaining the information such as car's location and travel direction, and it is transferred to the first data processing mould
Block;
From car information acquisition module, for being derived from the running condition information of car, and the first data processing module is transferred to;
First data processing module, receive the first GPS module and from the collection of car information acquisition module from car information, and connect
Other information of vehicles transmitted by the first DSRC transceiver communication modules, by the comprehensive analysis to congestion information, information is issued
First DSRC transceiver communication modules make its broadcast, and trigger the prompting function of HMI template;
First DSRC transceiver communication modules, for receiving the running condition information and traffic information of vehicle, it is transferred to first
Data processing template, and the running condition information for the vehicle that the first data processing module is sent is broadcasted with traffic information;
HMI module, receive the congestion information that the first data processing module transmits and shown, while reminded.
According to the second aspect of the invention, there is provided another congestion detection means based on DSRC, including peace
Roadside unit mounted in intersection, the roadside unit include the second data processing module, the 2nd DSRC transceiver communication modules, and
Two GPS modules and communication module;Wherein:
Second GPS module, for obtaining the positional information of the roadside unit, it is transferred to the second data processing template;
Second data processing module, receive the congestion information that the 2nd DSRC transceiver communication modules transmit, carry out data processing
After be sent to communication module, or receive the congestion information that communication module is sent, the 2nd DSRC communications issued after carrying out data processing
Transceiver module is broadcasted;
2nd DSRC transceiver communication modules, for obtaining the running condition information and traffic information of vehicle, it is transferred to second
Data processing template, and the running condition information for the vehicle that the second data processing module is sent is broadcasted with traffic information;
Communication module, the congestion information for the second data processing module to be passed to is sent to traffic control center, or is connect
The congestion information detected issued by traffic control center is received, and issues the second data processing module.
According to the third aspect of the invention we, there is provided another congestion detection means based on DSRC, including it is upper
The board units being arranged on vehicle stated, and the above-mentioned roadside unit installed in intersection, the two units pass through that
This DSRC transceiver communications module carries out information exchange, i.e.,:2nd DSRC transceiver communication modules, for receiving in board units
The running condition information and traffic information for the vehicle that one DSRC transceiver communication modules transmit, are transferred to the second data processing template,
And the running condition information for the vehicle for sending the second data processing module is broadcasted with traffic information.
According to a fourth aspect of the present invention, based on said apparatus, there is provided a kind of congestion detection side based on DSRC
Method, including:
Remote car is transmitted to the first data processing in the process of moving, from being gathered from car information acquisition module from the current speed of car
Module judges congestion level, and the first data processing mould is passed to again from the first GPS module collection current vehicle location, travel direction
Block, congestion level, vehicle location, travel direction vehicle ID information are packed in the first data processing module, pass to the first DSRC
Transceiver communication module is broadcasted;
In the process of moving, the first DSRC transceiver communication modules receive to be believed repeater car from remote car on congestion level
Breath, the first data processing module, the position of the first GPS module collection repeater car and transmits information are transmitted to, is transmitted to the first number
According to processing module;If judgement receives information and come to remote car, the first data processing module judge car speed whether be
Go slowly or congestion, if the car speed received to go slowly or congestion, record go slowly or the original position of congestion team leader and
Stop position, and how many is recorded and gone slowly or congestion queuing vehicle, if the queuing vehicle number of record reach road go slowly or
The vehicle number of congestion, then the first data processing module congestion terminal position and congestion level are packaged into congestion information, send
Broadcasted to the first DSRC transceiver communication modules, then by the first DSRC transceiver communication modules;The of main car in the same direction with remote car
One DSRC transceiver communication modules receive the congestion information from repeater car broadcast, pass to the first data processing module, trigger
Congestion ahead prompting function, HMI module is passed to, show congestion information on a display screen, and carry out corresponding voice reminder.
According to a fifth aspect of the present invention, based on said apparatus, there is provided a kind of congestion detection side based on DSRC
Method:The communication module of the roadside unit receive traffic control center transmit near section congestion information, be transferred to
Two data processing modules carry out processing packing, then are transmitted to the 2nd DSRC transceiver communication modules and are broadcasted.
According to a sixth aspect of the present invention, based on said apparatus, there is provided a kind of congestion detection side based on DSRC
Method, including:
2nd DSRC transceiver communication modules of the roadside unit receive the first DSRC communications from remote car board units
The congestion level information of transceiver module broadcast, is transmitted to the second data processing module, the second data processing module carries out judgement vehicle
Whether speed is to go slowly or congestion, if the car speed received to go slowly or congestion, is recorded and gone slowly or congestion team leader
Original position and stop position, and how many is recorded and gone slowly or congestion queuing vehicle, if the queuing vehicle number of record reaches
Road is gone slowly or the vehicle number of congestion, then congestion terminal position and congestion level are packaged into congestion by the second data processing module
Information, the 2nd DSRC transceiver communications module and communication module are sent to, then are broadcasted by the 2nd DSRC transceiver communication modules, by
Communication module is sent to traffic control center.
Compared with prior art, the present invention has following beneficial effect:
The present invention is used for intelligent transportation field, using DSRC technology, realizes mutual between vehicle, between vehicle and road
Join intercommunication.Compared with prior art other communication modes, the DSRC communication technology used times are shorter, and cost is lower, and transmission information is more
Accurately, and the installation of infrastructure device is more convenient.By the information exchange of board units and roadside unit, a variety of traffic are can detect
Stream, can realize the detection of congestion ahead, accident information is reported into Traffic Administration Bureau rapidly, and carrying out congestion to rear driver carries
Wake up, so as to avoid more massive traffic congestion.Relative to prior art, present invention detection is accurately and reliably, easy for installation, can subtract
The destruction of few road pavement, detection range expand, and cost reduces.
Brief description of the drawings
The detailed description made by reading with reference to the following drawings to non-limiting example, further feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the schematic diagram of a scenario that board units detect congestion ahead in one embodiment of the invention;
Fig. 2 is the structured flowchart of congestion detection means board units in one embodiment of the invention;
Fig. 3 is the schematic diagram of a scenario that roadside unit detects congestion ahead in one embodiment of the invention;
Fig. 4 is the structured flowchart of congestion detection means roadside unit in one embodiment of the invention;
Fig. 5 is board units and roadside unit overall structure block diagram in one embodiment of the invention;
Label declaration in figure:
100 be board units, and 110 be data processing module, and 120 be DSRC transceiver communication modules, and 130 be GPS module,
140 be that 150 be HMI module, and 200 be roadside unit, and 210 data processing modules, 220 lead to for DSRC from car information acquisition module
Believe transceiver module, 230 be GPS module, and 240 be communication module.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection domain.
Embodiment 1
Scene is as shown in figure 1, a kind of board units 100 of congestion ahead detection means, as shown in Fig. 2 the vehicle-mounted list
Member 100 includes:First data processing module 110, the first DSRC transceiver communications module 120, the first GPS module 130, from car information
Acquisition module 140 and HMI module 150.
First GPS module 130, it is connected with the first data processing module 110, for obtaining car's location and travel direction
Etc. information, and it is transferred to the first data processing module;
From car information acquisition module 140, it is connected with the first data processing module 110, for being derived from the transport condition of car
Information, including the information such as travel speed, acceleration, and it is transferred to the first data processing module;
First data processing module 110, is connected with other modules, receives the first GPS module and from car information acquisition module
Collection from car information, and receive other information of vehicles that the first DSRC transceiver communication modules transmit, by congestion information
Comprehensive analysis, information is issued into the first DSRC transceiver communication modules and makes its broadcast, and trigger the prompting function of HMI template;May be used also
For the processing and computing of data, the original position of congestion is can record, calculates the information such as how many tailback.
First DSRC transceiver communications module 120, it is connected with the first data processing module 110, for receiving the traveling of vehicle
Status information and traffic information, it is transferred to the first data processing template, and the row for the vehicle that the first data processing module is sent
Status information is sailed to be broadcasted with traffic information;
HMI module 150, it is connected with the first data processing module 110, receives the congestion letter that the first data processing module transmits
Breath is shown, while carries out voice reminder.
Based on said system, a kind of method that board units carry out congestion ahead detection is also provided.
Before the method for detection congestion is introduced, the standard that the present invention is used to judge congestion is first introduced.Because the present invention has in mind
Point is to detect localized road congestion, is not related to and detects macroscopical congestion, therefore judge to gather around only with the speed according to vehicle
Stifled degree.As shown in the table 2 of table 1, for the road of different stage, when the average Travel vehicle for the vehicle for exceeding certain amount on road
When speed is below a certain speed, congestion in road state is judged.
Table 1
Table 2
It is the step of board units application congestion ahead detection method in embodiment 1:
Step 1.1:Remote car (Remote Vehicle, RmV) is equipped with the board units 100 of congestion ahead detection means,
It is gathered from the current travel speed of car from from car information acquisition module 140 in the process of moving.
Step 1.2:Remote car passes to data processing mould again from the first GPS module 130 collection current vehicle location, travel direction
Block 110.
Step 1.3:The Vehicle Speed that remote car will collect, is transmitted to the first data processing module 110, data processing mould
Block 110 judges the road conditions congestion level of the car residing road at present to be unimpeded according to the velocity interval on different roads in table 1,
Go slowly or congestion.
Step 1.4:Remote the first data processing module of car 110 is by congestion level, vehicle location, travel direction and vehicle ID etc.
Information package.
Step 1.5:Above-mentioned package information is passed to the first DSRC transceiver communication modules by the first data processing module of remote car 110
120 are broadcasted.
Step 2.1:With remote car to repeater car (Relay Vehicle, RlV) be equipped with congestion ahead detection means
Board units 100, in the process of moving, the first DSRC transceiver communications module 120 receive the information such as the congestion level from remote car.
Step 2.2:The DSRC transceiver communications module 120 of repeater car the first is transmitted to the first data processing module 110.
Step 2.3:The first GPS module of repeater car 130 gathers the information such as position and the travel direction of repeater car, is transmitted to first
Data processing module 110.
Step 2.4:Come from if the first data processing module of repeater car 110 judges to receive information to remote car, first
Data processing module 110 is judged according to table 1.If the congestion level received to go slowly or congestion, record go slowly or
The original position and stop position of congestion team leader, and how many is recorded and gone slowly or congestion queuing vehicle,
Step 2.5:The first data processing module of repeater car 110 is judged according to table 2, if the queuing vehicle number of record
Reach this kind of road to go slowly or the vehicle number of congestion, then it is assumed that get congestion, the first data processing module 110 is by congestion terminal
Position and congestion level are packaged into congestion information.
Step 2.6:The first data processing module of repeater car 110 is sent to the first DSRC transceiver communications module 120.
Step 2.7:Repeater car DSRC transceiver communications module 120 is broadcasted.
Step 3.1:Main car (Host Vehicle, HV) in the same direction is equipped with the vehicle-mounted of congestion ahead detection means with remote car
Unit 100, its DSRC transceiver communications module 120 receive the congestion information from repeater car broadcast.
Step 3.2:Main car DSRC transceiver communications module 120 passes to the first data processing module 110.
Step 3.3:Main the first data processing module of car 110 receives congestion information, triggers congestion ahead prompting function.
Step 3.4:Main the first data processing module of car 110 passes to HMI module 150, shows that congestion is believed on a display screen
Breath, and carry out corresponding voice reminder.
Embodiment 2
Scene is as shown in Figure 3.
The present embodiment provides a kind of roadside unit 200 of congestion ahead detection means, as shown in figure 4, the roadside unit
200 include:Second data processing module 210, the 2nd DSRC transceiver communications module 220, the second GPS module 230 and general communication
Module 240.
Second data processing module 210, is connected with all modules, processing and calculation function for data, recordable to gather around
Stifled original position, calculate the information such as how many tailback.
2nd DSRC transceiver communications module 220, it is connected with the second data processing module 210, for receiving and launching vehicle
With traffic information.
Second GPS module 230, it is connected with the second data processing module 210, the position for obtaining the roadside unit is believed
Breath.
Communication module 240, it is connected with the second data processing module 210,3G, 4G communication or fiber optic communication can be used, be used for
The congestion information detected is sent to traffic control center or receives the congestion detected the letter issued by traffic control center
Breath.
The present embodiment also provides the method that roadside unit carries out congestion ahead detection.
In another way, roadside unit can also realize that congestion ahead detects using following steps in embodiment 2:
Step 1:The conventional communication module 240 of roadside unit 200 receive traffic control center transmit near section
Congestion information, it is transferred to data processing centre 210 and carries out processing packing.
Step 2:Packed congestion information is transmitted to the 2nd DSRC communications by the data processing centre 210 of roadside unit 200
Transceiver module 220.
Step 3:The congestion information of the 2nd DSRC transceiver communications module 220 broadcast related roads of roadside unit 200.
Embodiment 3
As shown in figure 5, a kind of congestion detection means based on DSRC, including the peace described in above-described embodiment 1
Board units on vehicle, and the roadside unit installed in intersection described in embodiment 2, the two units pass through that
This DSRC transceiver communications module carries out information exchange, i.e.,:2nd DSRC transceiver communication modules, for receiving in board units
The running condition information and traffic information for the vehicle that one DSRC transceiver communication modules transmit, are transferred to the second data processing template,
And the running condition information for the vehicle for sending the second data processing module is broadcasted with traffic information.
Congestion ahead detection is carried out using the device of embodiment 3, step is:
Step 1:2nd DSRC transceiver communications module 220 of roadside unit 200 receives first from remote car board units
The information such as the congestion level that DSRC transceiver communications module 120 is broadcasted, are transmitted to the second data processing module 210.
Step 2:Second data processing module 210 of roadside unit 200 is judged according to table 1, if the vehicle received
Speed is then recorded and gone slowly or the original position and stop position of congestion team leader, and it is slow how many is recorded to go slowly or congestion
Row or congestion queuing vehicle.Judged again according to table 2, if the queuing vehicle number of record reaches this kind of road and gone slowly or congestion
Vehicle number, then be judged as that road occurs going slowly or congestion, the second data processing module 210 is by congestion terminal position and congestion
Degree is packaged into congestion information.
Step 3:Second data processing module 210 of roadside unit 200 is sent to the He of the 2nd DSRC transceiver communications module 220
Conventional communication module 240.
Step 4:The DSRC transceiver communications module 220 of roadside unit 200 broadcasts related congestion information.
Step 5:The conventional communication module 240 of roadside unit 200 sends related congestion information to traffic control center.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring the substantive content of the present invention.