CN207473842U - A kind of road vehicle detection and evidence-obtaining system - Google Patents
A kind of road vehicle detection and evidence-obtaining system Download PDFInfo
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- CN207473842U CN207473842U CN201721427358.8U CN201721427358U CN207473842U CN 207473842 U CN207473842 U CN 207473842U CN 201721427358 U CN201721427358 U CN 201721427358U CN 207473842 U CN207473842 U CN 207473842U
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Abstract
The utility model discloses a kind of detection of road vehicle and evidence-obtaining systems, including the back gantry set gradually along track direction of traffic interval one end distance, preceding portal frame, further include switch board, image acquisition device, the first laser scanning means being arranged on back gantry, second laser scanning means before being arranged on portal frame, the image acquisition device includes the tail shooting camera being arranged on back gantry, preceding shooting camera before being arranged on portal frame, the switch board communicably connects the tail shooting camera respectively, first laser scanning means, second laser scanning means and preceding shooting camera, and the tail shooting camera is controlled according to the detection information that laser scanning device transmits, preceding shooting camera acts the acquisition of vehicle execution information.Above-mentioned road vehicle detection and evidence-obtaining system realize vehicle detection twice in succession and evidence obtaining of taking pictures, have the characteristics that reliability is high, equipment amount is few, laying is simple.
Description
Technical field
The utility model belongs to technical field of intelligent traffic, and in particular to a kind of detection of vehicle and apparatus for obtaining evidence.
Background technology
With China's expanding economy, the highway in China is constantly built, and the popularity rate of automobile is also increasingly
Height causes the traffic administration burden of highway, hence it is imperative that carrying out intelligence to the vehicle travelled in highway
The problem of detection of change ground and evidence obtaining, this compares concern as current freeway traffic regulation department.
Road vehicle triggers and what velocity measuring was more commonly used mainly has the modes such as video, ground induction coil, laser.Wherein,
Laser detection mode launches the extremely narrow light beam of certain frequency using infrared semiconductor laser diode and takes accurate aim target,
Object back reflection is reached with the light velocity and is received unit reception back, by measuring infrared light-wave in laser detection equipment and mesh
Delivery time between mark determines the distance with object, and then the distance by continuously measuring obtains being averaged in certain time
Speed, because this time of measuring is extremely short, therefore this average speed is regarded as instantaneous velocity, that is, realizes testing the speed for laser.
Compared to the mode of video and ground induction coil, the mode of laser detection is with detection mode is high, measurement range is big, on-mechanical contact
Measure avoid damage to sensor, can all weather operations the features such as, application prospect is more extensive.Chinese patent application
CN1605033A discloses a kind of method and apparatus measured for vehicle set shape and speed determines, only by a laser
Scanner can be to carrying out determining for geometric shape measurement and speed on highway in the vehicle of longitudinal movement.But as how swashed
Based on light detection result, site intelligent accurately and in time is carried out to violation road vehicle and is collected evidence, convenient for the live with after of personnel
Phase enforces the law, and still lacks effective technological means.
Utility model content
The utility model for it is existing the technical issues of make improvements, i.e., the technical problem to be solved is that carry for utility model
For a kind of detection of road vehicle and evidence-obtaining system, it is provided simultaneously with the function of road vehicle detection and evidence obtaining.
For above-mentioned technical problem, technical solution provided by the utility model is：
A kind of road vehicle detection and evidence-obtaining system, after being set gradually along track direction of traffic interval one end distance
Portal frame, preceding portal frame, further include switch board, image acquisition device, the first laser scanning means being arranged on back gantry,
Second laser scanning means before being arranged on portal frame, the first laser scanning means, the second laser scanning means
Its plane of scanning motion be approximately perpendicular to ground and with track vehicle heading α in a certain angle, the image acquisition device includes
The tail shooting camera being arranged on back gantry, the preceding shooting camera being arranged on preceding portal frame, the switch board are communicably distinguished
The tail shooting camera, first laser scanning means, second laser scanning means and preceding shooting camera are connected, and is filled according to laser scanning
The detection information for putting transmission controls the tail shooting camera, preceding shooting camera to act the acquisition of vehicle execution information.
Further, the detection of above-mentioned road vehicle and evidence-obtaining system further include to intersect and embedded be deployed on track, can communicate
The weighing-appliance that ground is connect with the switch board.
Further, the weighing-appliance is two rows of piezoelectric type weighing-appliances close to arrangement, and first row piezoelectric type is weighed
Equipment is arranged in first laser radar scanning plane and on the intersection of track plane, second row piezoelectric type weighing-appliance is deployed in
The front of first row piezoelectric type weighing-appliance.
Alternatively, the weighing-appliance is two rows of piezoelectric type weighing-appliances close to arrangement, first row piezoelectric type, which is weighed, to be set
It is standby to be arranged in second laser radar scanning plane and on the intersection of track plane, second row piezoelectric type weighing-appliance is deployed in the
The front of one row pressure electric-type weighing-appliance.
Further, at a distance of 20~30 meters between the front and rear portal frame, and each portal frame height is 6 meters, and the tail is clapped
Camera tilts down 15 °~25 ° in face of preceding gantry direction, and the preceding shooting camera tilts down 15 ° towards back gantry direction
~25 °.
Further, the angle α is set as 30 °~60 °.
Based on the detection of above-mentioned road vehicle and evidence-obtaining system, first laser radar on back gantry on preceding portal frame
Preceding shooting camera coordinates, and the second laser radar on preceding portal frame coordinates with the tail shooting camera on back gantry, realizes two trains
Detection and evidence obtaining, avoid the generation of single measurement error or mistake, improve the reliability of measurement and evidence obtaining.The opposing party
Face, piezoelectric type weighing-appliance coordinate with laser radar, can carry out correct amount to vehicle, avoid the mistake during following vehicle is weighed
Accidentally occur.In addition, whole system equipment amount is few, lays simply, implement convenient for engineering.
Description of the drawings
Fig. 1 is road vehicle detection provided by the utility model and evidence-obtaining system stereoscopic schematic diagram.
Fig. 2 is the vertical view signal that vehicle head has just enter into first laser radar scanning plane in the utility model embodiment
Figure.
Fig. 3 is the vertical view signal that vehicle tail has just left second laser radar scanning plane in the utility model embodiment
Figure.
Specific embodiment
It is described below to disclose the utility model so that those skilled in the art can realize the utility model.It retouches below
Preferred embodiment in stating is only used as illustrating, it may occur to persons skilled in the art that other obvious modifications.
In order to describe conveniently, vehicle is set to longitudinal direction along the direction that track is normally advanced here, in vehicle movement plane
The direction being transversely to the machine direction is known as laterally, referred to as vertical perpendicular to the direction of plane of movement.Vehicle is along the normal direction of advance in track
Before (non-reverse driving) is, it is opposite to that be reversed after.
Road vehicle detection provided in this embodiment and evidence-obtaining system, as shown in Figure 1 to Figure 3, including driving a vehicle along track
Back gantry 11, the preceding portal frame 12 that direction interval one end distance is set gradually.The two portal frames, about 6 meters of each height,
At a distance of about 20~30 meters between two portal frames.The road vehicle overrun testing and evidence-obtaining system further include switch board 4, image collection
Device, laser scanning device and the piezoelectric type weighing-appliance 5 pre-installed in track.
Before image acquisition device includes the tail shooting camera 21 being separately positioned on back gantry and is arranged on portal frame
Preceding shooting camera 22.Tail shooting camera 21 faces preceding 12 direction of portal frame, tilts down 15 °~25 ° or so.Preceding shooting camera 22 is towards rear
11 direction of portal frame tilts down 15 °~25 ° or so.Preceding shooting camera 22, tail shooting camera 21 shooting angle should be able to capture
Whole information of vehicles is preferred, and specific angle can be adjusted according to installation concrete condition.
Laser scanning device includes the first laser radar 31 being loaded on back gantry, swashs loaded on second on preceding portal frame
Optical radar 32.For every laser radar by way of pushing up and filling, the plane of scanning motion is approximately perpendicular to ground, scans track downwards.
Laser radar scanning plane sets certain angle α with track cross section (plane vertical with vehicle heading) and (referred to as scans
Deviation angle), angle can freely be set.The range suggestion of scanning shift angle α is set as between 30 °~60 °, too small or excessive angle
Degree may result in error increase.Laser radar scanning plane is not strictly required perpendicular to the ground, can have certain second inclined
Move angle beta.But to avoid, the precision caused by scanning distance is excessive reduces and error increases, it is proposed that the second offset angle control
System only needs to be roughly perpendicularly to ground in -15 °~15 ° ranges, Practical Project when installing.Due to the plane of scanning motion and vehicle
By vertical plane (track cross section) between there are a scanning shift angle α, so laser radar scanning vehicle obtains
Inclined cutting scan data.
Any laser radar based on above-mentioned tilting installation, the measurement data provided can carry out vehicle speed measurement and vehicle
The measurement of size, while vehicle is approximately considered at the uniform velocity by laser radar scanning plane.Specific measuring method is the prior art,
Which is not described herein again.Such as Chinese patent application CN1605033A, it discloses in a kind of be directed on vehicle heading significantly
Lengthwise position method that the speed of vehicle is calculated in the position change of certain time.
Piezoelectric type equipment 5 is intersected for front two rows and between row close to the piezoelectric type weighing-appliance of configuration, embedded portion
It affixes one's name on track, below rear middle portal frame.When wheel presses through weighing-appliance surface, it will generate corresponding pressure letter
Number, by the overall weight that can calculate the processing of pressure signal vehicle.Here, heel row piezoelectric type equipment is arranged in first and swashs
On the optical radar plane of scanning motion and the intersection of track plane, i.e. the length direction of heel row piezoelectric type equipment and track direction track is transversal
Face (plane vertical with vehicle heading) is a certain included angle α.The so deployment of the weighing-appliance of heel row the reason is as follows that：Caravan
At the time of weighing-appliance be T2 in Chinese herbaceous peony wheel load for T1 at the time of head triggering laser scanning, the upper weighing-appliance of back wheels of vehicle pressure when
It carves as T3, is T4 at the time of laser scanning terminates.Since wheel is after headstock, therefore during laser radar scanning headstock, Chinese herbaceous peony wheel
There are no reach weighing-appliance.Similarly, when back wheels of vehicle presses through weighing-appliance, the tailstock leaves laser scanning plane not yet.Therefore
It understands：T1<T2<T3<T4.It is with the advantage that this is disposed：When vehicle from weighing-appliance by after, weighing-appliance generation it is a series of
Weighing data.Carry out data centralized processing when, central processing module can very easily according to the start-stop of laser radar when
Between determine a vehicle range.Corresponding vehicle weighing number is matched so as to very easily be searched from a large amount of weighing datas
According to.Avoid in data processing the mistake because caused by following distance is too small.Certainly, piezoelectric type equipment can also use similar
Before mode is deployed in below portal frame.
Switch board 4 respectively with image acquisition device, laser scanning device and piezoelectric type weighing-appliance 5 by LAN or
RS485 modes communicate to connect, and receive the number that image acquisition device, laser scanning device and piezoelectric type weighing-appliance 5 communicate to connect
It is believed that it ceases and controls its action.
Above system working process and principle are as follows：As shown in Fig. 2, when vehicle traveling is reached near back gantry 11, lead to
When crossing first laser 31 plane of scanning motion of radar, laser radar confirms vehicle arrival moment, and vehicle driving speed is obtained by calculating
And size attribute.Meanwhile in driving conditions, switch board 4 drives into the laser scanning plane according to vehicle head, forward portal frame 12
On preceding shooting camera 22 send signal, before triggering shooting camera 22 to front part of vehicle carry out Image Acquisition, detection while, complete
Scene evidence taking.As shown in figure 3, near portal frame 12, pass through the plane of scanning motion of second laser radar 32 before vehicle traveling reaches
When, laser radar confirms vehicle arrival moment, the relative position in track where record vehicle, by that can obtain vehicle by calculating
Road speed and size attribute.Meanwhile in driving conditions, laser scanning plane is sailed out of according to vehicle tail, to back gantry 11
On tail shooting camera 21 send signal, triggering tail shooting camera 21 carries out Image Acquisition to vehicle tail, while detection, completes
Scene evidence taking.
Each equipment connection mode that vehicle photo is captured is as follows：When vehicle drives to 11 lower section of back gantry, first swashs
Optical radar 31 enters scanning discovery new vehicle.Scanning result is reported central processing module (switch board 4 by first laser radar 31
It is interior), after being analyzed by central processing module, shooting camera 22 sends grab signal forward for selection (RS485 modes communicate).When vehicle is sailed
During from preceding 12 lower section of portal frame, scanning discovery vehicle is left scanning area by second laser radar 32.Second laser radar 32 will
After scanning result reports central processing module to analyze, select to send grab signal to tail shooting camera 21 (RS485 modes communicate).Tool
The communication protocol of body, and difference different according to the type of bayonet camera, which is not described herein again.
Based on the detection of above-mentioned road vehicle and evidence-obtaining system, first laser radar 31 and preceding portal frame on back gantry 11
Preceding shooting camera 22 on 12 coordinates, and the second laser radar 32 on preceding portal frame 12 is matched with the tail shooting camera 21 on back gantry 11
It closes, realizes vehicle detection twice and evidence obtaining, avoid the generation of single measurement error or mistake, improve measurement and evidence obtaining
Reliability.On the other hand, piezoelectric type weighing-appliance and laser radar coordinate, and can carry out correct amount to vehicle, avoid with
Occur with the mistake in vehicle weighing.In addition, whole system equipment amount is few, lays simply, implement convenient for engineering.
The technology contents of the not detailed description of the utility model are known technology.
The advantages of basic principle, main feature and the utility model of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only the utility model principle, on the premise of not departing from the spirit and scope of the utility model the utility model also have respectively
Kind changes and improvements, these changes and improvements are both fallen in claimed the scope of the utility model.The guarantor of the utility model
Shield range is defined by appended claims and its equivalent.
Claims (6)
1. a kind of detection of road vehicle and evidence-obtaining system, which is characterized in that including along track direction of traffic interval one end distance according to
The back gantry of secondary setting, preceding portal frame, further include switch board, image acquisition device, be arranged on back gantry first swash
Light scanning apparatus, the second laser scanning means being arranged on preceding portal frame, the first laser scanning means, described second swash
Its plane of scanning motion of light scanning apparatus be approximately perpendicular to ground and with track vehicle heading α in a certain angle, the image adopts
Acquisition means include the tail shooting camera being arranged on back gantry, the preceding shooting camera being arranged on preceding portal frame, and the switch board can
Communicatedly connect the tail shooting camera, first laser scanning means, second laser scanning means and preceding shooting camera respectively, and according to
The detection information of laser scanning device transmission controls the tail shooting camera, preceding shooting camera to act the acquisition of vehicle execution information.
2. road vehicle detection according to claim 1 and evidence-obtaining system, which is characterized in that further include and intersect embedded portion
Affix one's name to the weighing-appliance on track, communicably being connect with the switch board.
3. road vehicle detection according to claim 2 and evidence-obtaining system, which is characterized in that the weighing-appliance is two rows
Close to the piezoelectric type weighing-appliance of arrangement, first row piezoelectric type weighing-appliance is arranged in first laser radar scanning plane and vehicle
On the intersection of road plane, second row piezoelectric type weighing-appliance is deployed in the front of first row piezoelectric type weighing-appliance.
4. road vehicle detection according to claim 2 and evidence-obtaining system, which is characterized in that the weighing-appliance is two rows
Close to the piezoelectric type weighing-appliance of arrangement, first row piezoelectric type weighing-appliance is arranged in second laser radar scanning plane and vehicle
On the intersection of road plane, second row piezoelectric type weighing-appliance is deployed in the front of first row piezoelectric type weighing-appliance.
5. road vehicle detection according to claim 1 or 2 and evidence-obtaining system, which is characterized in that the front and rear portal frame
Between at a distance of 20~30 meters, and each portal frame height is 6 meters, and the tail shooting camera is tilted down in face of preceding gantry direction
15 °~25 °, the preceding shooting camera tilts down 15 °~25 ° towards back gantry direction.
6. road vehicle detection according to claim 1 or 2 and evidence-obtaining system, which is characterized in that the angle α is set as
30 °~60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721427358.8U CN207473842U (en) | 2017-10-31 | 2017-10-31 | A kind of road vehicle detection and evidence-obtaining system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721427358.8U CN207473842U (en) | 2017-10-31 | 2017-10-31 | A kind of road vehicle detection and evidence-obtaining system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207473842U true CN207473842U (en) | 2018-06-08 |
Family
ID=62265906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721427358.8U Expired - Fee Related CN207473842U (en) | 2017-10-31 | 2017-10-31 | A kind of road vehicle detection and evidence-obtaining system |
Country Status (1)
| Country | Link |
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| CN (1) | CN207473842U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111882884A (en) * | 2020-07-23 | 2020-11-03 | 吉林省易威科技有限公司 | Intelligent traffic monitoring system |
| CN114624726A (en) * | 2022-03-17 | 2022-06-14 | 南通探维光电科技有限公司 | Wheel axle identification system and wheel axle identification method |
| CN115880914A (en) * | 2022-10-20 | 2023-03-31 | 西安航天三沃机电设备有限责任公司 | Vehicle separation device and method for ultra-off-site law enforcement system |
-
2017
- 2017-10-31 CN CN201721427358.8U patent/CN207473842U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111882884A (en) * | 2020-07-23 | 2020-11-03 | 吉林省易威科技有限公司 | Intelligent traffic monitoring system |
| CN114624726A (en) * | 2022-03-17 | 2022-06-14 | 南通探维光电科技有限公司 | Wheel axle identification system and wheel axle identification method |
| CN115880914A (en) * | 2022-10-20 | 2023-03-31 | 西安航天三沃机电设备有限责任公司 | Vehicle separation device and method for ultra-off-site law enforcement system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180608 Termination date: 20181031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |