CN109448398A - Array laser vehicle flow detection system - Google Patents
Array laser vehicle flow detection system Download PDFInfo
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- CN109448398A CN109448398A CN201811331105.XA CN201811331105A CN109448398A CN 109448398 A CN109448398 A CN 109448398A CN 201811331105 A CN201811331105 A CN 201811331105A CN 109448398 A CN109448398 A CN 109448398A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
- G08G1/054—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed photographing overspeeding vehicles
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The invention belongs to road safeties to monitor field, be a kind of technical solution and system for being related to detecting road running vehicle.The invention proposes one kind by several laser constitution arrays, the technical solution and system of monitoring road traffic and vehicle other behaviors formed with control unit and data processing unit.The distance signal that the system is detected according to the array laser vertical with road surface accurately and timely acquires data, type of vehicle and the vehicle condition information of road traffic.By statistics to detection data, analysis processing, realize to road real-time traffic flow amount accurate measurements incessantly；Road running vehicle type can also be analyzed and determined, anticipation and early warning are carried out to Vehicle Speed, to vehicle illegal road occupation, ridden line traveling and superelevation ultra-wide illegal activities are detected and judged, provide effective decision support for road management.The accuracy that the present invention detects road traffic uses that reaction speed is fast, high sensitivity as wagon detector up to 99.9%.
Description
Technical field
The invention belongs to road safeties to monitor field, be a kind of technical side for being related to detecting road running vehicle flow
Case and system
Background technique
With the development of national economy, the continuous extension of road network, the safe and smooth development to national economy of road
It is played a crucial role with the happiness of the people.It is accurate to control running state of the vehicle and real-time dynamic data on road, be
Build the Information base of safe city and smart city.Researching and developing system of monitoring road traffic is the important of Current traffic management
It works and urgently solves the problems, such as, the monitoring of the monitoring for road vehicle condition, especially vehicle flow is then important
One of task.
Currently, having ground induction coil, video monitor and detection, microwave detection or microwave to the method for road traffic condition monitoring
The methods of+video combine detection, or password card quantity and the inspection of the lane in which the drivers should pay fees monitor are provided by expressway entrance and exit
Survey the vehicle flowrate number that road is calculated by vehicle fleet size.But video and microwave are affected by environment larger, when monitoring, deposits
Trolley is blocked in cart, vehicle congestion queuing occurs and is difficult to count, and accuracy is difficult to guarantee, and can not show that every road exists
The frequency and corresponding vehicle statistics that vehicle passes through in real time in some period, can not show that traffic jam occurs in some section
Frequency and temporal regularity etc..And ground induction coil installation maintenance need to interrupt road traffic, roll damage vulnerable to loaded vehicle, the service life is inclined
It is short.
This system is devised a kind of using array laser structure by the analysis and research to existing road vehicle monitoring technology
The technical solution and system for the monitoring road vehicle traffic status built, the system pass through the accurate road vehicle of acquisition in real time
Outline data and information can be realized and carry out real-time, uninterrupted accurate measurements to road traffic, judges the type by vehicle
And frequency；Real-time release the coast is clear situation is analyzed by data, provides road information service for driver and traffic administration person.
Driver can adjust travel route according to information in real time, and then reach traffic flow dynamic equilibrium；Traffic administration person is according to having grasped
Information of vehicle flowrate, can make rapidly targetedly processing and optimization control scheme, traffic accident, emergency situations etc. can be done
Fast reaction out excludes rapidly accident root, takes corresponding emergency measure, provide rescue service；Establish road traffic number
According to library, to support road operation conditions to evaluate, data support is provided for the decision of road improvement operation and traffic administration.
This system realizes intelligent real-time monitoring and management to road vehicle condition, is improving traffic environment,
Guarantee that road especially expressway traffic safety and the coast is clear, promotion service quality and operation level etc. will play weight
The effect wanted.And it is handled by statistics, the analysis etc. to monitoring data, provides effective decision branch for road management work
It holds.
Summary of the invention
The present invention provides technical solutions and system that a kind of pair of road vehicle flow and vehicle condition monitor.It can be real
Now to the detection of road traffic and early warning, to type of vehicle, car speed, vehicle illegal road occupation, line traveling is ridden and superelevation is super
Wide illegal activities are detected and are judged.
System of the invention is constituted: three array laser, control unit and data processing unit parts.
Present system layout forms array using several laser elements in monitoring section, is respectively perpendicular and is installed on
On road side's portal frame, and it is in 90 degree of landscape layouts by the center spacing of 20 ~ 120cm and trend of road, sees Fig. 1.
Array laser works in a pulsed fashion, generates continuous pulse signal, when passing through according to vehicle in monitoring section, swashs
Light pulse returns to the distance signal H from object, carries out counting and processing to it by control unit and data processing unit.Work as monitoring
When area passes through without vehicle, laser pulse return signal H is distance H from the ground0, when monitoring section has vehicle to pass through, laser arteries and veins
Rushing return signal H is and vehicle body distance Hn.According to HnAnd HnThe frequency of appearance can calculate a hour vehicle flowrate.
Array laser lateral vertical arrangement on the gantry, the pulse signal distance value H received according to array laser0
Or Hn, determine whether monitoring section has vehicle to pass through by data processing unit, the distance H returned with laser pulse signalnAnd counting
Number C(Fig. 2) judge and calculate the car speed passed through.When same model vehicle passes through, laser pulse signal recycle time C
Numerical value it is smaller, then can determine that it is faster by the car speed of detection zone, it is on the contrary then slower.It is returned according to laser pulse signal
Distance HnWith the laser detector number n analytical calculation that is triggered simultaneously can determine whether by type of vehicle.
The present invention has the advantage that and effect outstanding compared with prior art.
The present invention detects driving vehicle on road using array laser, and records vehicle by Data Management Analysis
The quantity passed through, calculates the hour vehicle flowrate of road, judges type of vehicle, road occupying state, vehicle super-high ultra-wide state, and can
It is used as wagon detector, provides effective decision support for road management work.This system detects road traffic
Accuracy is up to 99.9%, much higher than existing video detection, the accuracy of microwave detection.
Detailed description of the invention
Fig. 1 is system layout figure of the invention
Fig. 2 is laser pulse wave schematic diagram
Specific embodiment
In order to illustrate more clearly of technical solution of the present invention and its advantage, below by embodiment to technology of the invention
Scheme is specifically described, it is necessary to be pointed out that embodiment is served only for further explanation of the invention, should not be understood as pair
The limitation of the scope of the present invention, the those skilled in the art are obtained under the premise of not making inventive improvements
Other embodiments belong in the scope of the present invention.
1 vehicle Flow Detection of embodiment
Array laser works in a pulsed fashion, generates continuous pulse signal, according to array laser in system monitoring region
Pulse signal distance value H can determine whether that vehicle passes through and counted, to judge the smoothness of road.When monitoring section does not have vehicle
By when, the signal H that detects is distance H from the ground0；When monitoring section has vehicle to pass through, the signal H that detects be from
The distance H of vehicle bodyn, according to HnAnd H0The frequency of appearance can calculate a hour vehicle flowrate.Meanwhile entering detection zone to leaving from vehicle
Detection zone, can be to the pulse signal H in Fig. 2nCounting how many times C.It, can be pre- according to laser pulse wave number C for same model
Sentence the speed of car speed, the small then speed of laser pulse wave number C value is fast, on the contrary then slow.
The judgement of 2 vehicle of embodiment
On standard 3.75m road be laid out 9 lasers, when according to vehicle passing detection area, array laser detect from
The distance H of vehicle bodyn, be consecutively detected vehicle body laser pulse wave number C in vehicle body signal laser number n and Fig. 2 and calculated
Analysis processing, can determine that vehicle and establishes database.It is consecutively detected vehicle body signal laser number n and vehicle width relationship such as
Under:
It when being consecutively detected vehicle body signal laser number n=3, and is continuous, vehicle width range < 1550mm；
It when being consecutively detected vehicle body signal laser number n=4, and is continuous, vehicle width range 1250-1950mm；
It when being consecutively detected vehicle body signal laser number n=5, and is continuous, vehicle width range 1650-2350mm；
It when being consecutively detected vehicle body signal laser number n=6, and is continuous, vehicle width range 2050-2750mm；
It when being consecutively detected vehicle body signal laser number n=7, and is continuous, vehicle width range > 2450mm.
3 road occupying of embodiment traveling judgement
On standard 2+1 super expressway, when there are 7 or more lasers to detect that vehicle passes through on fast traffic lane, it is determined as cart
Occupy fast traffic lane；2 or more lasers have detected that vehicle passes through on emergency road, can determine that vehicle occupies Emergency Vehicle Lane, and
Trigger extraneous capturing system.
Embodiment 4 rides line traveling judgement
On standard road, when laser (above line containing the driveway partition) inspection for having continuous adjacent on two neighboring lane simultaneously
It has measured vehicle to pass through, can determine that there is vehicle to ride line traveling.
5 overspeed warning of embodiment
When according to vehicle passing detection area, array laser detect from vehicle body distance Hn, detect what vehicle passed through
The number C of laser pulse wave in laser number n and Fig. 2 can be counted roughly by data base querying, system setting and self study
Vehicle Speed is calculated as the instruction of traffic administration and plays forewarning function.
6 ultra-wide superelevation early warning of embodiment
When according to vehicle passing detection area, array laser detect from vehicle body distance Hn, detected vehicle by swashing
The number C of laser pulse wave in light device number n and Fig. 2 provides violation vehicle by data base querying, system setting and self study
Early warning.Such as heavy goods vehicle:
Work as H0-Hn> 4.0m issues superelevation early warning；
It when having detected vehicle by laser number n=8, and is continuous, sending ultra-wide early warning.
Embodiment 7 is used as vehicle detection trigger
Array laser continuously issues laser pulse signal wave, when there is vehicle to pass through, vehicle body return laser pulse signal by
It can rapidly and accurately be that other equipment provide trigger signal by control unit after receiver receives.
Claims (8)
1. array laser vehicle flow detection system.
2. it is characterized in that system is made of three array laser, control unit and data processing unit parts.
3. the monitoring and early warning to road vehicle flow can be realized, vehicle vehicle, vehicle illegal road occupation are ridden line traveling behavior and are surpassed
The detection and judgement of high ultra-wide illegal activities.
4. array laser vehicle flow detection system described in right 1, which is characterized in that the detection mode of system is used in monitoring section
Several laser constitution arrays are respectively perpendicular road surface and are installed on above road on portal frame, and by between the center of 20 ~ 120cm
Away from trend of road be in 90 degree of landscape layouts.
5. the vehicle flowrate of array laser vehicle flow detection system described in right 1 calculates, which is characterized in that data processing unit passes through
To in system monitoring region continuously to the distance value H of the laser pulse signal returned by ground0The laser pulse returned with vehicle body
The distance value H of signalnFrequency carry out counting processing after, calculate road on driving vehicle hour vehicle flowrate.
6. the vehicle of array laser vehicle flow detection system described in right 1 judges, which is characterized in that data processing unit foundation
When vehicle passes through monitoring section, array laser detect from vehicle body distance Hn, return to vehicle body signal laser number n and vehicle
The laser pulse wave number C that body returns carries out calculating analysis processing and builds library, prejudges vehicle.
7. array laser vehicle flow detection system described in right 1, which is characterized in that data processing unit passes through to array laser
The pulse signal of return is continuously returned from vehicle body distance HnLaser the distance from the ground that detects of number n, laser
H0With from vehicle body distance HnAnalysis processing, can determine whether vehicle illegal road occupation, ride line traveling and superelevation ultra-wide illegal activities.
8. array laser vehicle flow detection system described in right 1, which is characterized in that according to right 4 as a result, control unit passes through
System setting and self study can calculate Vehicle Speed and prejudge the speed of speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811331105.XA CN109448398A (en) | 2018-11-09 | 2018-11-09 | Array laser vehicle flow detection system |
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| CN201811331105.XA CN109448398A (en) | 2018-11-09 | 2018-11-09 | Array laser vehicle flow detection system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110796897A (en) * | 2019-10-21 | 2020-02-14 | 西安中星测控有限公司 | Intelligent overpass (tunnel) height-limiting width-limiting anti-collision early warning system and early warning method |
| CN112198522A (en) * | 2019-06-21 | 2021-01-08 | 北醒（北京）光子科技有限公司 | Vehicle overload control system based on laser radar |
| CN112396838A (en) * | 2020-11-17 | 2021-02-23 | 淮阴工学院 | Road traffic jam early warning system and method |
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| US5515042A (en) * | 1993-08-23 | 1996-05-07 | Nelson; Lorry | Traffic enforcement device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20190308 |