CN106918287A - A kind of vehicle height-finding system and method - Google Patents
A kind of vehicle height-finding system and method Download PDFInfo
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- CN106918287A CN106918287A CN201510991936.XA CN201510991936A CN106918287A CN 106918287 A CN106918287 A CN 106918287A CN 201510991936 A CN201510991936 A CN 201510991936A CN 106918287 A CN106918287 A CN 106918287A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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Abstract
The invention discloses a kind of vehicle height-finding system and method, comprising portal frame (4), the vehicle height-finding system is included：Laser light curtain (3), diffusing reflection target (5), component of taking pictures (6) and information process unit；The laser light curtain (3) and diffusing reflection target (5) are respectively arranged on the montant of the left and right sides of the portal frame (4), the laser light curtain (3) forms a row laser facula for surveying one row laser beam of diffusing reflection target (5) transmitting high to described on the diffusing reflection target (5)；It is described take pictures component for record to have vehicle pass through portal frame or without vehicle pass through portal frame two states under diffusing reflection target (5) on laser facula；The processing unit, calculates by the height of vehicle for laser facula data when passing through portal frame without vehicle based on storage with laser facula data when having vehicle to pass through.
Description
Technical field
The present invention relates to a kind of height of car dimension measuring device, and in particular to a kind of vehicle height-finding system and method.
Background technology
In recent years, vehicle overload overload has a strong impact onCountryProperty and people's life safety, jeopardize social economic order, it has also become a prominent social concern.At present, it is often to be carried out in manual measurement mode during the size of detection vehicle, its problem for existing is：1st, the degree of accuracy and violation operation of measurement is difficult to control to.2nd, automaticity is low, it is impossible to meet the growth requirement that motor vehicle management department is managed motorized vehicles implementation informationization.
The publication No. of patent application for CN102620662 document in give " based on light curtain vehicle dimension automatic measurement system and its measuring method ", the patent be based on light curtain vehicle dimension automatic measurement system, use LED light curtain exist response speed it is slow the shortcomings of.
The content of the invention
In view of above-mentioned analysis, the present invention is intended to provide the online elevation carrection light curtain of a kind of large scale, high accuracy vehicle and measuring method, specifically provide a kind of vehicle height-finding system and method.
To achieve these goals, the present invention provides a kind of vehicle height-finding system, and comprising portal frame 4, the vehicle height-finding system is included：Laser light curtain 3, diffusing reflection target 5, take pictures component 6 and information process unit；The laser light curtain 3 and diffusing reflection target 5 are respectively arranged on the montant of the left and right sides of the portal frame 4, and the laser light curtain 3 is used to launch a row laser beam to the survey diffusing reflection target 5 high, and then a row laser facula is formed on the diffusing reflection target 5；It is described take pictures component for record to have vehicle pass through portal frame or without vehicle pass through portal frame two states under diffusing reflection target 5 on laser facula；The processing unit, calculates by the height of vehicle for laser facula data when passing through portal frame without vehicle based on storage with laser facula data when having vehicle to pass through.
Optionally, above-mentioned laser light curtain 3 is further included：Several lasers 8, universal adjustment bulb 9, laser fixed base row 10, clamp nut 11 and drive circuit board 12.
Described several lasers 8 equidistantly form a line, and the laser that sends of each laser need to form a line when getting on diffusing reflection target 5 laser, laser spots transversal displacement≤10mm.
The construction of the laser light curtain 3：Laser 8 is put into universal adjustment bulb 9, and laser fixed base row 10 is put into together, and clamp nut 11 is screwed into laser fixed base row 10, fixed universal adjustment bulb 9.Drive circuit board 12 is fixed on laser fixed base row 10 again, the structural housing 13 of laser light curtain 3 is put into together, make to be screwed, load onto the structure side plate 15 of cover plate 14 and laser light curtain 3.
The height Z3=4m of above-mentioned diffusing reflection target 5, and width is not less than 300mm；The diffusing reflection target 5 is using surface spray matt and the metallic plate or non-metal board of white molding powder.
Above-mentioned component of taking pictures further is included：First CCD camera, the second CCD camera, two camera lenses, two optical filters and structure mounting brackets；It is screwed into camera lens, optical filter successively respectively in front of the first CCD camera and the second CCD camera, then the first CCD camera and the second CCD camera is put into phase machine protective cover, finally phase machine protective cover is fixed on structure mounting bracket；The optical filter is used to filter visible ray.
Above-mentioned processing unit is further included：
Coordinate is set and memory module, when passing through without vehicle for defining on diffusing reflection target 5 each luminous point coordinate, and each luminous point corresponds to unique coordinate (xn, hn), using the data of all coordinate points composition as template data.
Second memory module, for recording the dot pattern picture being imaged on diffusing reflection target 5 after laser light curtain 3 is blocked when there is vehicle to pass through, and the coordinate of each luminous point on the laser light curtain 3 not being blocked is calculated according to the dot pattern picture being imaged on now diffusing reflection target 5, find out the smallest spot not being blocked, i.e. edge-light point coordinates.
First processing module, the template data that the coordinate data for the second memory module to be stored is set with coordinate and memory module is stored is matched, and then finds out the coordinate h not being blockednMinimum luminous point.
Second processing module, for being calculated by the height value H of vehicle according to equation below：
H=H0+p(hn-h0)
Wherein, H0It is the nethermost laser spot of laser light curtain 3 apart from the height value on ground, h0It is the coordinate of the bottom laser spot of laser light curtain 3.
Additionally, surveying method high present invention also offers a kind of vehicle, methods described is included：
Step 101) laser light curtain to diffusing reflection target 5 launch a row laser beam；Step 102) the first CCD camera recording laser light curtain diffusing reflection target 5 imaging；Step 103) coordinate value of the luminous point of imaging of the laser light curtain 3 on diffusing reflection target 5 when passing through without vehicle is set, and now all coordinate values will store as matching template；Step 104) when vehicle passes through, laser light curtain 3 is blocked in the part luminous point of the imaging of diffusing reflection target 5, records the coordinate of luminous point on now diffusing reflection target 5；Step 105) by step 103) template and the step 104 that obtain) the light point coordinates that obtains is matched, and then obtain the coordinate value of the top edge luminous point of diffusing reflection target 5 when vehicle passes through；Step 106) calculated by the height of vehicle according to the coordinate value of the edge luminous point for obtaining.
Optionally, step 105) edge for laser light curtain bottom luminous point coordinate value hn。
Above-mentioned steps 106) using the height of equation below calculating vehicle：
H=H0+p(hn-h0)
Wherein, H0It is the nethermost laser spot of laser light curtain apart from the height value on ground, h0It is the coordinate of laser light curtain bottom laser spot.
The advantage of the invention is that：
The online elevation carrection of present apparatus vehicle is imaged using laser light curtain, the mode that the collection of industrial CCD camera is received.CCD camera matches somebody with somebody travel(l)ing rest, is easy to the full visual field to receive light screen imaging luminous point.
In vehicle travel process, the acquisition rate of CCD camera is 10ms, and according to the length and travel speed of car, system meeting automatic data collection hundreds of to thousands of pictures is matched per pictures with template, draws hn, the h of all picturesnIt is compared, takes maximum, the as height coordinate of tested vehicle.
The design spacing of laser is that actual size in 10mm, but production between two luminous points can deviation in light curtain, it is possible to use a scaling board for Serial regulation height is demarcated with the height of each 5cm, finely tunes p and H0Allow all of laser point coordinates to keep the same linearity, reduce error.
Except the above method, camera frame frequency is fast, picking rate 10ms, and elevation carrection response is fast, will not miss size narrower on car, can guarantee that the certainty of measurement of height of car 1%, and certainty of measurement is high.
By the way of clamp nut and universal adjustment bulb fixed laser, clamp nut and the rigidly larger material of universal adjustment bulb material selection are easy to the fixation of laser to light curtain.
Compared with prior art, it is of the invention it is a technical advantage that：
Launch with common one end, the scan-type light curtain that one end receives is compared, the laser light curtain imaging that the present invention is used, the mode that the collection of industrial CCD camera is received, camera frame frequency is fast, picking rate 10ms, elevation carrection response is fast, will not miss the narrower sizes such as similar storehouse grating boxcar fence, and the test coverage of height is wider, the certainty of measurement of height of car 1% is can guarantee that, certainty of measurement is high.
Brief description of the drawings
Figure 1It is that elevation carrection of the present invention is illustratedFigure；
Figure 2It is the flow of the survey method high that the present invention is providedFigure；
Figure 3It is that the present invention surveys laser light curtain internal structure signal highFigure。
It is attached FigureMark：
1st, triggering transmitter unit 2, triggering receiving unit 3, survey laser light curtain high
4th, portal frame 5, survey diffusing reflection target plate 6 high, survey photomoduel high
7th, measurement host
Specific embodiment
In conjunction withAccompanying drawingThe invention will be further described.
The present invention provides a kind of vehicle height-finding system, and comprising portal frame 4, the vehicle height-finding system is included：Laser light curtain 3, diffusing reflection target 5, take pictures component 6 and information process unit；The laser light curtain 3 and diffusing reflection target 5 are respectively arranged on the montant of the left and right sides of the portal frame 4, and the laser light curtain 3 is used to launch a row laser beam to the survey diffusing reflection target 5 high, and then a row laser facula is formed on the diffusing reflection target 5；It is described take pictures component for record to have vehicle pass through portal frame or without vehicle pass through portal frame two states under diffusing reflection target 5 on laser facula；The processing unit, calculates by the height of vehicle for laser facula data when passing through portal frame without vehicle based on storage with laser facula data when having vehicle to pass through.
Optionally, above-mentioned laser light curtain 3 is further included：Several lasers 8, universal adjustment bulb 9, laser fixed base row 10, clamp nut 11 and drive circuit board 12.
Described several lasers 8 equidistantly form a line, and the laser that sends of each laser need to form a line when getting on diffusing reflection target 5 laser, laser spots transversal displacement≤10mm.
The construction of the laser light curtain 3：Laser 8 is put into universal adjustment bulb 9, and laser fixed base row 10 is put into together, and clamp nut 11 is screwed into laser fixed base row 10, fixed universal adjustment bulb 9.Drive circuit board 12 is fixed on laser fixed base row 10 again, the structural housing 13 of laser light curtain 3 is put into together, make to be screwed, load onto the structure side plate 15 of cover plate 14 and laser light curtain 3.
The height Z3=4m of above-mentioned diffusing reflection target 5, and width is not less than 300mm；The diffusing reflection target 5 is using surface spray matt and the metallic plate or non-metal board of white molding powder.
Above-mentioned component of taking pictures further is included：First CCD camera, the second CCD camera, two camera lenses, two optical filters and structure mounting brackets；It is screwed into camera lens, optical filter successively respectively in front of the first CCD camera and the second CCD camera, then the first CCD camera and the second CCD camera is put into phase machine protective cover, finally phase machine protective cover is fixed on structure mounting bracket；The optical filter is used to filter visible ray.
Above-mentioned processing unit is further included：
Coordinate is set and memory module, when passing through without vehicle for defining on diffusing reflection target 5 each luminous point coordinate, and each luminous point corresponds to unique coordinate (xn, hn), using the data of all coordinate points composition as template data.
Second memory module, for recording the dot pattern picture being imaged on diffusing reflection target 5 after laser light curtain 3 is blocked when there is vehicle to pass through, and the coordinate of each luminous point on the laser light curtain 3 not being blocked is calculated according to the dot pattern picture being imaged on now diffusing reflection target 5, find out the smallest spot not being blocked, i.e. edge-light point coordinates.
First processing module, the template data that the coordinate data for the second memory module to be stored is set with coordinate and memory module is stored is matched, and then finds out the coordinate h not being blockednMinimum luminous point.
Second processing module, for being calculated by the height value H of vehicle according to equation below：
H=H0+p(hn-h0)
Wherein, H0It is the nethermost laser spot of laser light curtain 3 apart from the height value on ground, h0It is the coordinate of the bottom laser spot of laser light curtain 3.
Additionally, surveying method high present invention also offers a kind of vehicle, methods described is included：
Step 101) laser light curtain to diffusing reflection target 5 launch a row laser beam；Step 102) the first CCD camera cameras record laser light curtain diffusing reflection target 5 imaging；Step 103) coordinate value of the luminous point of imaging of the laser light curtain 3 on diffusing reflection target 5 when passing through without vehicle is set, and now all coordinate values will store as matching template；Step 104) when vehicle passes through, laser light curtain 3 is blocked in the part luminous point of the imaging of diffusing reflection target 5, records the coordinate of luminous point on now diffusing reflection target 5；Step 105) by step 103) template and the step 104 that obtain) the light point coordinates that obtains is matched, and then obtain the coordinate value of the top edge luminous point of diffusing reflection target 5 when vehicle passes through；Step 106) calculated by the height of vehicle according to the coordinate value of the edge luminous point for obtaining.
Optionally, step 105) edge for laser light curtain bottom luminous point coordinate value hn。
Above-mentioned steps 106) using the height of equation below calculating vehicle：
H=H0+p(hn-h0)
Wherein, H0It is the nethermost laser spot of laser light curtain apart from the height value on ground, h0It is the coordinate of laser light curtain bottom laser spot.
The advantage of the invention is that：
The online elevation carrection of present apparatus vehicle is imaged using laser light curtain, the mode that the collection of industrial CCD camera is received.CCD camera matches somebody with somebody travel(l)ing rest, is easy to the full visual field to receive light screen imaging luminous point.
In vehicle travel process, the acquisition rate of CCD camera is 10ms, and according to the length and travel speed of car, system meeting automatic data collection hundreds of to thousands of pictures is matched per pictures with template, draws hn, the h of all picturesnIt is compared, takes maximum, the as height of tested vehicle.
The design spacing of laser is that actual size in 10mm, but production between two luminous points can deviation in light curtain, it is possible to use a scaling board for Serial regulation height is demarcated with the height of each 5cm, finely tunes p and H0Allow all of laser point coordinates to keep the same linearity, reduce error.
Except the above method, camera frame frequency is fast, picking rate 10ms, and elevation carrection response is fast, will not miss size narrower on car, can guarantee that the certainty of measurement of height of car 1%, and certainty of measurement is high.
By the way of clamp nut and universal adjustment bulb fixed laser, clamp nut and the rigidly larger material of universal adjustment bulb material selection are easy to the fixation of laser to light curtain.
Embodiment
Such as Figure 1It is shown, the system of the embodiment of the present invention is made up of measurement host 7, triggering start unit 1 and 2, survey laser light curtain 3 high, survey diffusing reflection target plate 5 high, survey photomoduel 6 high, the part of portal frame 4 six, and described triggering start unit is made up of measurement triggering transmitter unit 1 with receiving unit 2 is triggered.The survey unit high of vehicle is constituted by surveying laser light curtain 3 high, survey diffusing reflection target plate 5 high and survey photomoduel 6 high.
Laser light curtain 3 and survey diffusing reflection target plate 5 high are separately mounted to the both sides of portal frame 4, and both are at a distance of Y1=5m.Away from ground Z2=1m, laser wavelength used is 780nm to laser light curtain 3, and band logical narrow band pass filter is added before CCD camera camera lens, is only capable of receiving the light of laser, it is to avoid the interference of visible ray.The height Z3=4m of diffusing reflection target plate high 5 is surveyed, width is not less than 300mm, using surface spray matt, the metallic plate or non-metal board of white molding powder, be easy to luminous point to be more easy to clearly be recognized by CCD camera.Photomoduel high 6 is surveyed apart from target plate apart from X1=3~4m, 2 CCD cameras are placed up and down, and Z4=2m, Z5=3m are respectively apart from ground.Triggering start unit 1 and 2 is not less than 1m apart from portal frame X2.
Survey laser light curtain high 3 and launch a row laser beam to diffusing reflection target 5 high is surveyed, a row laser facula, and spot diameter 6-8 millimeters for being formed, 10 millimeters of hot spot spacing are formed on diffusing reflection target 5.
Such as Figure 2It is shown, before test, calibrate the coordinate of each luminous point on laser light curtain 3.Every time after start, before measurements, system automatically extracts all luminous points, and all luminous points that will be gathered are used as template data.
Measurement starts, and vehicle passes through, and triggering start unit 1 and 2 receives object signal, starts detection.The laser for surveying the transmitting of laser light curtain 3 high can be blocked when vehicle is sailed into portal frame 4, now surveying photomoduel high 6 can photograph the shielded image of traveling occlusion short transverse laser spots on diffusing reflection target 5 with real-time capture, data are transmitted to by measurement host 7 by Ethernet, template data with storage is matched, edge (i.e. bottom) light point coordinates is identified, so as to draw vehicle profile height according to following specific method.
First, the actual physical size p between pixel is calibrated.
When passing through without vehicle, all luminous points are not blocked, and software stores all luminous point photos automatically, and used as template, the method increased by region extracts the coordinate of each laser spots in light curtain template, and each luminous point calibrates unique coordinate (x in templaten, hn).Size between luminous point is calculated by pixel physical size.
Hypometric formula：
H=H0+p(hn-h0)
H0It is the height value on laser light curtain bottom spot distance ground.h0It is the coordinate of laser light curtain bottom luminous point.
When vehicle passes through, part luminous point is blocked, and dot pattern picture is matched with template after CCD camera collection is blocked, and finds out the coordinate h not being blockednMinimum luminous point, height of car is calculated by formula.
In vehicle travel process, the acquisition rate of CCD camera is 10ms, and according to the length and travel speed of car, system meeting automatic data collection hundreds of to thousands of pictures is matched per pictures with template, draws hn, the h of all picturesnIt is compared, takes maximum, the as height of tested vehicle.
The design spacing of laser is that actual size in 10mm, but production between two luminous points can deviation in light curtain, it is possible to use a scaling board for Serial regulation height is demarcated with the height of each 5cm, finely tunes p and H0Allow all of laser point coordinates to keep the same linearity, reduce error.
Except the above method, camera frame frequency is fast, picking rate 10ms, and elevation carrection response is fast, will not miss size narrower on car, can guarantee that the certainty of measurement of height of car 1%, and certainty of measurement is high.
Such as Figure 3Shown, described survey laser light curtain 3 high is the laser of equidistantly arrangement, and laser is irradiated to imaging target and forms equidistant array of light spots during work.
Laser 8 is placed in universal adjustment bulb 9, and universal adjustment bulb 9 is put into laser fixed base row 10, is powered to laser 8, rotate universal adjustment bulb 9, the laser for sending is set to be irradiated to imaging target relevant position coordinate, clamp nut 11, you can realize the fixation of laser 8.Clamp nut 11 and universal adjustment bulb 9 prevent the stagnant phenomenon for causing to relax, laser spots offset after the elasticity due to material using the larger material of rigidity.Laser containment vessel multi-directional ball hair style is designed, and is locked after being easy to laser alignment, efficiency high.
, it is necessary to be powered to each laser 8 when laser 8 is debugged, in order to improve efficiency, drive circuit board 12 is minimized, after being mechanically fixed with laser fixed base row 10, be together put into laser debugging tool, carry out the installation and regulation of laser.Laser fixed base row 10 assembles with the unitary design of laser driving circuit plate 12, integral type.Realize efficient.
The elevation carrection flow of the embodiment of the present inventionFigure,As schemed 2It is shown.Specifically surveying process high is：
It is vertically-mounted on the column of portal frame 4 to have laser light curtain 3, positioned at vehicle side to be measured.The length of laser light curtain 3 is 4m, is uniformly distributed 400 light beams, projects the column opposite side of portal frame 4, forms equidistant hot spot.Hot spot spacing 10mm, spot diameter 8mm.When vehicle is sailed into portal frame 4, the laser for surveying the transmitting of laser light curtain 3 high can be blocked, surveying photomoduel 6 high can photograph the shielded image of traveling occlusion short transverse laser spots on diffusing reflection target 5 with real-time capture.The position coordinates that each hot spot is photographed to cameras capture is demarcated, the position coordinates of the hot spot that is blocked by detection, and then draws the height of vehicle to be measured.
The laser light curtain 3 of the embodiment of the present inventionSuch as Figure 3It is shown.It is made up of laser 8, universal adjustment bulb 9, laser fixed base row 10, clamp nut 11, drive circuit board 12 etc. inside laser light curtain 3, the laser equidistantly forms a line, and the laser that sends of laser gets to 5 meters and is imaged target outward, form a line laser, laser spots transversal displacement≤10mm.
The present invention realizes the accurate measurement to large scale vehicle profile height size.
It should be noted last that, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although being described in detail to the present invention with reference to embodiment, it will be understood by those within the art that, technical scheme is modified or equivalent, without departure from the spirit and scope of technical solution of the present invention, it all should cover in the middle of scope of the presently claimed invention.
Claims (8)
1. a kind of vehicle height-finding system, comprising portal frame (4), it is characterised in that the vehicle height-finding system is included：
Laser light curtain (3), diffusing reflection target (5), component of taking pictures (6) and information process unit；
The laser light curtain (3) and diffusing reflection target (5) are respectively arranged in the left and right sides of the portal frame (4)
On montant, the laser light curtain (3) for launching a row laser beam to the diffusing reflection target (5) high, and then in institute
State and a row laser facula is formed on diffusing reflection target (5)；
It is described take pictures component for record to have vehicle pass through portal frame or without vehicle pass through portal frame two states under
Diffusing reflection target (5) on laser facula；
The processing unit, for based on storage without vehicle pass through portal frame when laser facula data with have vehicle
By when laser facula data calculate by the height of vehicle.
2. vehicle height-finding system according to claim 1, it is characterised in that the laser light curtain (3) is entered
One step is included：Several lasers (8), universal adjustment bulb (9), laser fixed base row (10), compression spiral shell
Female (11) and drive circuit board (12)；
Described several lasers (8) equidistantly form a line, and the laser that each laser sends gets to diffusing reflection
Need to form a line laser when on target (5), laser spots transversal displacement≤10mm；
The construction of the laser light curtain (3)：Laser (8) is put into universal adjustment bulb (9), is put into together
Laser fixed base arranges (10), and clamp nut (11) is screwed into laser fixed base row (10), the universal tune of fixation
Section bulb (9)；
Drive circuit board (12) is fixed in laser fixed base row (10) again, laser light curtain (3) is put into together
Structural housing (13), make to be screwed, load onto the structure side of cover plate (14) and laser light curtain (3)
Plate (15).
3. vehicle height-finding system according to claim 1, it is characterised in that the diffusing reflection target (5)
Height Z3=4m, and width is not less than 300mm；
The diffusing reflection target (5) is using surface spray matt and the metallic plate or non-metal board of white molding powder.
4. vehicle height-finding system according to claim 1, it is characterised in that the component of taking pictures further is wrapped
Contain：First CCD camera, the second CCD camera, two camera lenses, two optical filters and structure mounting brackets；
It is screwed into camera lens, optical filter successively respectively in front of the first CCD camera and the second CCD camera, then by first
CCD camera and the second CCD camera are put into phase machine protective cover, and phase machine protective cover finally is fixed on into structure mounting bracket
On；
The optical filter is used to filter visible ray.
5. vehicle height-finding system according to claim 1, it is characterised in that the processing unit is further wrapped
Contain：
Coordinate set and memory module, when passing through without vehicle for defining on diffusing reflection target (5) each luminous point coordinate,
And each luminous point corresponds to unique coordinate (xn, hn), using the data of all coordinate points composition as template data；
Second memory module, for recording after laser light curtain (3) is blocked when there is vehicle to pass through in diffusing reflection target (5)
The dot pattern picture of upper imaging, and calculate that what is be not blocked swashs according to the dot pattern picture being imaged on now diffusing reflection target (5)
The coordinate of each luminous point in light light curtain (3), finds out the smallest spot not being blocked, i.e. edge-light point coordinates；
First processing module, coordinate data and coordinate for the second memory module to be stored set and memory module is deposited
The template data of storage is matched, and then finds out the coordinate h not being blockednMinimum luminous point；
Second processing module, for being calculated by the height value H of vehicle according to equation below：
H=H0+p(hn-h0)
Wherein, H0It is laser light curtain (3) nethermost laser spot apart from the height value on ground, h0It is laser light
The coordinate of curtain (3) bottom laser spot.
6. the vehicle of the vehicle height-finding system that any one claim is recorded surveys high in a kind of 1-5 based on claim
Method, methods described is included：
Step 101) laser light curtain to diffusing reflection target (5) launch a row laser beam；
Step 102) the first CCD camera and the second CCD camera recording laser light curtain diffusing reflection target (5) into
Picture；
Step 103) set the luminous point of imaging of the laser light curtain (3) on diffusing reflection target (5) when passing through without vehicle
Coordinate value, and now all coordinate values will store as matching template；
Step 104) when vehicle passes through, part luminous point quilt of the laser light curtain (3) in the imaging of diffusing reflection target (5)
Block, record the coordinate of luminous point on now diffusing reflection target (5)；
Step 105) by step 103) template and the step 104 that obtain) the light point coordinates that obtains matched, entered
And obtain the coordinate value of diffusing reflection target (5) top edge luminous point when vehicle passes through；
Step 106) calculated by the height of vehicle according to the coordinate value of the edge luminous point for obtaining.
7. vehicle according to claim 6 surveys method high, it is characterised in that step 105) edge is
The luminous point coordinate value h of laser light curtain bottomn。
8. vehicle according to claim 6 surveys method high, it is characterised in that the step 106) using such as
Lower formula calculates the height of vehicle：
H=H0+p(hn-h0)
Wherein, H0It is the nethermost laser spot of laser light curtain apart from the height value on ground, h0For laser light curtain most under
The coordinate of face laser spot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510991936.XA CN106918287A (en) | 2015-12-24 | 2015-12-24 | A kind of vehicle height-finding system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510991936.XA CN106918287A (en) | 2015-12-24 | 2015-12-24 | A kind of vehicle height-finding system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106918287A true CN106918287A (en) | 2017-07-04 |
Family
ID=59459897
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510991936.XA Pending CN106918287A (en) | 2015-12-24 | 2015-12-24 | A kind of vehicle height-finding system and method |
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| Country | Link |
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| CN (1) | CN106918287A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071085A (en) * | 2020-09-11 | 2020-12-11 | 哈尔滨市科佳通用机电股份有限公司 | Road vehicle customs lock shooting system and identification method realized by adopting same |
-
2015
- 2015-12-24 CN CN201510991936.XA patent/CN106918287A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112071085A (en) * | 2020-09-11 | 2020-12-11 | 哈尔滨市科佳通用机电股份有限公司 | Road vehicle customs lock shooting system and identification method realized by adopting same |
| CN112071085B (en) * | 2020-09-11 | 2021-08-06 | 哈尔滨市科佳通用机电股份有限公司 | Road vehicle customs lock shooting system and identification method realized by adopting same |
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