CN107886728A - Truck vehicle video identification device and method - Google Patents
Truck vehicle video identification device and method Download PDFInfo
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- CN107886728A CN107886728A CN201711201103.4A CN201711201103A CN107886728A CN 107886728 A CN107886728 A CN 107886728A CN 201711201103 A CN201711201103 A CN 201711201103A CN 107886728 A CN107886728 A CN 107886728A
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- vehicular sideview
- induction coil
- ground induction
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000006698 induction Effects 0.000 claims abstract description 31
- 238000004364 calculation method Methods 0.000 claims abstract description 12
- 238000005303 weighing Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 7
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 238000005096 rolling process Methods 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 5
- 241000209094 Oryza Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000001815 facial effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000007557 optical granulometry Methods 0.000 description 1
- 230000003716 rejuvenation Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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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
- G08G1/015—Detecting movement of traffic to be counted or controlled with provision for distinguishing between two or more types of vehicles, e.g. between motor-cars and cycles
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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
- G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
-
- 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
- G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
Abstract
The present invention relates to express highway intelligent charging administration system vehicle cab recognition field, and in particular to a kind of truck vehicle video identification device and method.Truck vehicle video identification device and method, including ground induction coil A, ground induction coil B, car plate shoots camera, Built-in Image handles the embedded system of software, vehicular sideview shoots camera, count weight track and weight calculation weighing platform, it is characterized in that, vehicular sideview shoots camera in the vertical rod of weighing platform opposite side, vehicular sideview shooting camera uses wide-angle lens, vehicular sideview shooting camera alignedly feels loop A center, it is 18 22 meters that vehicular sideview, which shoots camera and the distance at ground induction coil A centers, the angle that vehicular sideview shoots camera and track direction of traffic is 45 degree -135 degree.The present invention is advantageous in that on-mechanical contact obtains vehicle vehicle information, no wheel rolls, measuring cell not damaged, and measuring cell service life length, usually measuring system need not be safeguarded.
Description
Technical field
The present invention relates to express highway intelligent charging administration system vehicle cab recognition field, and in particular to a kind of truck
Vehicle video identification device and method.
Background technology
Highway load-carrying vehicle weighs toll collection system, it is necessary to which the vehicle of accurate judgement load-carrying vehicle, it is heavy and total to obtain axle
Weight.The vehicle type recognition device of current most load-carrying vehicles is dependent on wheel and rolled, and judges vehicle according to wheel rolling layer.
It is a kind of impact-rolling process that vehicle, which rolls, is rolled device and is damaged because rolling layer is excessive, rolling device can not lasting work
Make, cause vehicle cab recognition mistake, have a strong impact on that carrier vehicle toll collection system long-time stable works.How rolling layer mistake is solved
More problems, the present inventor use for reference the types of facial makeup in Beijing operas software experience of recognition of face, propose no rolling technique scheme -- from load-carrying vehicle side
Pan photo, the analysis of distant view photograph image, obtains " types of facial makeup in Beijing operas "-car spectrum of load-carrying vehicle, writes car spectrum discrimination software.Meter
The embedded system of calculation machine or Built-in Image processing software, by car spectrum discrimination vehicle, abbreviation truck video vehicle cab recognition side
Method.The process of truck model recognizing method：First, to be captured from the side of tested load-carrying vehicle, obtain load-carrying vehicle side
Face distant view photograph；Then, software is composed using the car of load-carrying vehicle side distant view photograph, identifies load-carrying vehicle feature, the number of axle, Dan Shuan
Wheel, single shaft, two axle groups, three axle groups, vehicle commander, overall height, judge vehicle vehicle.Technical scheme path, according to field condition of weighing, choosing
Select the camera of different focal, shooting load-carrying vehicle side distant view photograph.Technological difficulties have two, one, and load-carrying vehicle length is very long, 20
More meters, how to shoot vehicular sideview distant view photograph；Two, vehicle car spectrum storehouse and vehicle cab recognition software are established, is sentenced with vehicle software
Disconnected vehicle.Because the vehicle species of load-carrying vehicle is various, truck has loading vehicle, also there is a birdyback, Vehicle length from
Several meters to 21 meters, height of car is also different, and truck can be divided into 2 axles by the number of axle -- 6 axles, totally 22 class vehicle.Technical side
Case：Two cameras, vehicle front camera shooting car plate, vehicle side camera shooting vehicle side distant view photograph.The characteristics of camera
It is that focal length camera can clap farther target, short focus camera can clap broader target.Common 135/120 camera, lens focus
It is 58/75 millimeter, belongs to middle burnt camera.Taken pictures 20 meters of long load-carrying vehicles with common 135/120 camera, shooting distance is remote.
Dreamboat, 50 meters of outer vehicular sideviews are vertically taken pictures, and measurement vehicle commander, vehicle commander whether there is interruption（Trailer）, overall height, the number of axle, axle group
（Mono-, di- joins or three shaft couplings）, vehicle is judged by parameter；Vertical vehicular sideview shooting, it is desirable to which measuring track lateral distance has 50 meters
Spacious section, area of space or does not allow；60 degree of angle, lateral distance becomes 40 meters；30 degree of angle, lateral distance becomes 25
Rice.Thus calculate, had any problem using general camera shooting.Using wide angle camera（The camera lens of camera uses wide-angle lens）,
Wide-angle lens focal length is 28 millimeters, selects 90/60/30 degree of angle, and shooting distance shortens to 20 meters/16 meters/10 meters, with after angle
Shooting distance can be closer to.Finally, vehicle side image software rejuvenation is captured, the line centered on vertical line among image, Che Tu
As both sides processing, an edge image scales up, and another side is scaled, returns to vertical angle shooting vehicular sideview, left
Right symmetrical picture effect.Car spectrum discrimination software is used again, and measurement vehicle commander, vehicle commander whether there is interruption（Trailer）, overall height, the number of axle, axle group
（Mono-, di- joins or three shaft couplings）, single two-wheel, vehicle is judged by parameter.
The content of the invention
According to the technical scheme of the present invention " wide angle camera is with the identification of angle shooting vehicular sideview distant view photograph image ", load-carrying
Automotive type video identification device and method, including ground induction coil A, ground induction coil B, car plate shooting camera, Built-in Image processing
Embedded system, vehicular sideview shooting camera, weight calculation track and the weight calculation weighing platform of software, it is characterized in that, ground induction coil A and ground are felt
Under the road surface in weight calculation tracks of the coil B in front of the weighing platform, ground induction coil A in preceding, ground induction coil B rear, ground induction coil A and
Spacing between ground induction coil B, select 4-6 meters；Car plate shoots camera in the vertical rod of weighing platform side, car plate shooting camera pair
Quasi- ground induction coil B；In weighing platform opposite side, Built-in Image is set to handle rack and the vehicular sideview shooting of the embedded system of software
Camera installs vertical rod, and vertical rod height is 3 meters, and vehicular sideview shooting camera is arranged in vertical rod, and vehicular sideview shooting camera is adopted
With wide-angle lens, vehicular sideview shooting camera alignedly feels loop A, and the distance of vehicular sideview shooting camera and ground induction coil A is
18--22 rice, the angle of vehicular sideview shooting camera and track direction of traffic is 45 degree -135 degree；Preferable vehicular sideview shooting
The angle of camera and track direction of traffic is including between 45 degree -80 degree, between 100 degree -135 degree.
Described truck vehicle video identification device and method, it is characterized in that, ground induction coil A ground induction coils B electricity
The embedded system of Built-in Image processing software is connected, in car plate shooting camera and vehicular sideview shooting camera are electrically connected with netting twine
Put the embedded system of image processing software, the embedded system serial ports electrical connection host computer of Built-in Image processing software.
Described truck vehicle video identification device and method, it is characterized in that, Built-in Image handles the insertion of software
Formula system receive car plate shooting camera license plate image information, obtain license board information after processing, be stored in using the license board information as
The memory cell of title；The embedded system of Built-in Image processing software receives the vehicle side image of vehicular sideview shooting camera
Afterwards, the line centered on the center vertical line of vehicle side, image left-right balance, left side amplification the right diminution or vice versa are carried out；With
Vehicle side image after left-right balance is this, and vehicle list two-wheel information is measured with image vehicle software；With wheel information, measurement
Vehicle axis information and axle group information；Measure Vehicle length；With above- mentioned information, the vehicle of vehicle is judged；The vehicle of the vehicle is believed
Memory cell of the breath write-in using the license board information as title；Using the license board information as title, host computer car plate car is uploaded to
Type information.
The operation principle explanation of truck vehicle video identification device and method：Circuit triggers：Truck drives into meter
Loaded vehicle road, truck are first pressed onto ground induction coil A, and car plate camera and vehicular sideview shooting camera enter shooting state；Load-carrying vapour
Car and then ground induction coil A and ground induction coil B are pressed onto simultaneously, car plate camera captures the car plate of truck for several times, uploads and built-in schemes
As the embedded system of processing software；The camera of vehicular sideview shooting simultaneously captures the side distant view photograph of truck for several times, on
Pass the embedded system of Built-in Image processing software.The embedded system of Built-in Image processing software receives car plate shooting camera
License plate image information, license board information is obtained after processing, store license board information by title of car plate；Built-in Image handles the embedding of software
After embedded system receives the vehicle side image of vehicular sideview shooting camera, the line centered on the center vertical line of vehicle side,
Carry out image left-right balance, left side amplification, the right diminution or vice versa；Using the vehicle side image after left-right balance as this, measurement
Vehicle list two-wheel information；With wheel information, vehicle axis information and axle group information, vehicle Vehicle length are measured, judges the car of vehicle
Type；The vehicle information of vehicle is write license board information memory cell, and the car plate vehicle information using license board information as title uploads
To host computer.
Truck vehicle video identification device and method of the present invention is beneficial in that, is contacted with on-mechanical and is obtained car
Vehicle information, no wheel roll device, and measuring cell has no mechanical damage, measuring cell service life length, usually measurement system
System need not be safeguarded.
Brief description of the drawings
Fig. 1 is each component distribution schematic diagram of in-site installation of truck vehicle video identification device and method
Fig. 2 is the circuit unit connection figure of truck vehicle video identification device and method
Wherein：1. truck, 2. ground induction coil A, 3. ground induction coil B, 4. car plates shooting camera, the processing of 5. Built-in Images
The embedded system of software, 6. vehicular sideviews shooting camera, 7. weight calculation tracks, 8. weight calculation weighing platforms, 9. host computers.
Embodiment
Truck vehicle video identification device of the specific embodiment with reference to Yuncheng north expressway weight calculation track entrance installation
And method, it is explained：
Shooting camera condition of work is preset：
Working power：12VDC（Maximum current 3A, quiescent current 0.1A）.
Operating temperature：-30℃-85℃.
Working relative humidity：30-90%（Relative humidity）.
Capture the time：It is most fast about 1-50 milliseconds.
The embedded system of Built-in Image processing software uses STM32F103VCT6, and default startup self-detection.
The course of work of truck vehicle video identification device and method：Truck drives into weight calculation track entrance, car
Ground induction coil A is pressed onto, and then is pressed onto ground induction coil A and ground induction coil B simultaneously, car plate camera captures the car of truck for several times
Board, upload the embedded system of Built-in Image processing software；The camera of vehicular sideview shooting simultaneously captures the side of truck for several times
Face distant view photograph, upload the embedded system of Built-in Image processing software.The embedded system of Built-in Image processing software receives
Car plate shoots the license plate image information of camera, and license board information is obtained after processing, stores license board information；Built-in Image processing software
After embedded system receives the vehicle side image of vehicular sideview shooting camera, centered on the center vertical line of vehicle side
Line, carry out image left-right balance, left side amplification the right diminution or vice versa；Using the vehicle side image after left-right balance as this, survey
Vehicle list two-wheel information is measured, with wheel information, vehicle axis information is measured, measures axle group information, vehicle Vehicle length, judge vehicle
Vehicle；The vehicle information of vehicle is write license board information memory cell, and the car plate vehicle information using license board information as title
It is uploaded to host computer.In actual test, when the angle for finding vehicular sideview shooting camera and track direction of traffic is 90 degree,
Vertical shooting photo analysis processing can not obtain single two-wheel information of vehicle, therefore specially avoid 80 degree near 90 degree -100 degree
Section；Therefore the angle of preferable vehicular sideview shooting camera and track direction of traffic includes 45 degree -80 degree, 100 degree -135 degree.
Truck vehicle video identification device and method of the present invention is beneficial in that, is contacted with on-mechanical and is obtained car
Vehicle information, no wheel roll device, and measuring cell has no mechanical damage, measuring cell service life length, usually measurement system
System need not be safeguarded.
Claims (3)
1. truck vehicle video identification device and method, including it is ground induction coil A, ground induction coil B, car plate shooting camera, interior
Embedded system, vehicular sideview shooting camera, weight calculation track and the weight calculation weighing platform of image processing software are put, it is characterized in that, ground sense
Under the road surface in the weight calculation track of loop A and ground induction coil B in front of weighing platform, ground induction coil A in preceding, ground induction coil B rear,
Spacing between ground induction coil A and ground induction coil B, select 4-6 meters；Car plate shoots camera in the vertical rod of weighing platform side, car plate
Shoot camera alignment ground induction coil B；In weighing platform opposite side, Built-in Image is set to handle the rack and car of the embedded system of software
Side shooting camera installation vertical rod, vertical rod height is 3 meters, and vehicular sideview shooting camera is arranged in vertical rod, vehicular sideview
Shooting camera uses wide-angle lens, and vehicular sideview shooting camera alignedly feels loop A, vehicular sideview shooting camera and ground sense line
Circle A distance is 18--22 rice, and the angle of vehicular sideview shooting camera and track direction of traffic is 45 degree -135 degree；Preferably
Vehicular sideview shoots the angle of camera and track direction of traffic including between 45 degree -80 degree, between 100 degree -135 degree.
2. truck vehicle video identification device and method as claimed in claim 1, it is characterized in that, ground induction coil A ground
Feel the embedded system of coil B electrical connection Built-in Image processing softwares, car plate shooting camera and vehicular sideview shooting camera net
The embedded system of line electrical connection Built-in Image processing software, the embedded system serial ports of Built-in Image processing software electrically connect
Bit machine.
3. truck vehicle video identification device and method as claimed in claim 1, it is characterized in that, Built-in Image processing is soft
The embedded system of part receives the license plate image information of car plate shooting camera, obtains license board information after processing, is stored in the car
Board information is the memory cell of title；The embedded system of Built-in Image processing software receives the vehicle of vehicular sideview shooting camera
After side image, the line centered on the center vertical line of vehicle side, carry out image left-right balance, the left side amplification the right reduce or
It is on the contrary；Using the vehicle side image after left-right balance as this, vehicle list two-wheel information is measured with image vehicle software；Believed with wheel
Breath, measurement vehicle axis information and axle group information；Measure Vehicle length；With above- mentioned information, the vehicle of vehicle is judged；The vehicle
Vehicle information writes the memory cell using the license board information as title；Using the license board information as title, host computer is uploaded to
Car plate vehicle information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711201103.4A CN107886728B (en) | 2017-11-27 | Video recognition device for truck model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711201103.4A CN107886728B (en) | 2017-11-27 | Video recognition device for truck model |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107886728A true CN107886728A (en) | 2018-04-06 |
| CN107886728B CN107886728B (en) | 2024-05-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109583394A (en) * | 2018-12-05 | 2019-04-05 | 陕西四维衡器科技有限公司 | The recognition methods of vehicle tyre number and special equipment in highway tolling system |
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| JPH0382493U (en) * | 1989-12-07 | 1991-08-22 | ||
| JPH08233525A (en) * | 1995-02-24 | 1996-09-13 | Hitachi Ltd | Vehicle-type discriminating apparatus |
| JPH0954891A (en) * | 1995-08-15 | 1997-02-25 | Babcock Hitachi Kk | Method for discriminating vehicle type by image processing and device therefor |
| US5809658A (en) * | 1993-09-29 | 1998-09-22 | Snap-On Technologies, Inc. | Method and apparatus for calibrating cameras used in the alignment of motor vehicle wheels |
| CN204632107U (en) * | 2015-05-21 | 2015-09-09 | 武汉万集信息技术有限公司 | A kind of combined model recognition system based on scanning type laser stadimeter |
| CN204808588U (en) * | 2015-07-29 | 2015-11-25 | 王云 | Vehicle type identification system |
| CN105719354A (en) * | 2016-01-15 | 2016-06-29 | 成都宜泊信息科技有限公司 | Trailer-type vehicle identification and parking charging system and method |
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0382493U (en) * | 1989-12-07 | 1991-08-22 | ||
| US5809658A (en) * | 1993-09-29 | 1998-09-22 | Snap-On Technologies, Inc. | Method and apparatus for calibrating cameras used in the alignment of motor vehicle wheels |
| JPH08233525A (en) * | 1995-02-24 | 1996-09-13 | Hitachi Ltd | Vehicle-type discriminating apparatus |
| JPH0954891A (en) * | 1995-08-15 | 1997-02-25 | Babcock Hitachi Kk | Method for discriminating vehicle type by image processing and device therefor |
| CN204632107U (en) * | 2015-05-21 | 2015-09-09 | 武汉万集信息技术有限公司 | A kind of combined model recognition system based on scanning type laser stadimeter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109583394A (en) * | 2018-12-05 | 2019-04-05 | 陕西四维衡器科技有限公司 | The recognition methods of vehicle tyre number and special equipment in highway tolling system |
| CN109583394B (en) * | 2018-12-05 | 2024-01-12 | 陕西四维衡器科技有限公司 | Method and special equipment for identifying number of vehicle tires in expressway toll collection system |
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