CN107677208A - Vehicle dimension measuring method based on raster scanning - Google Patents
Vehicle dimension measuring method based on raster scanning Download PDFInfo
- Publication number
- CN107677208A CN107677208A CN201710967885.6A CN201710967885A CN107677208A CN 107677208 A CN107677208 A CN 107677208A CN 201710967885 A CN201710967885 A CN 201710967885A CN 107677208 A CN107677208 A CN 107677208A
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- vehicle
- grating
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- serial
- light curtain
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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
- G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
Abstract
The present invention devises a kind of raster scanning system for being measured to vehicle dimension, including longitudinal scanning grating turns TCP/IP serial servers, vehicle dimension computational algorithm to, transversal scanning grating to, Multi-serial port.Longitudinal scanning grating is to being disposed vertically for a pair to penetrating grating pair, for measuring the height of vehicle diverse location；Transversal scanning grating is to being horizontal positioned to penetrating grating pair a pair, for measuring car speed and Vehicle length；Multi-serial port turns the Ethernet data that TCP/IP serial servers are used to being converted to two-way RS485 serial datas into ICP/IP protocol, vehicle dimension computational algorithm can calculate the length and height of corresponding vehicle headstock, vehicle body, the tailstock according to the data that serial ports is sent, the equipment and algorithm operate steadily, are safe and reliable, it is contactless, without parking under conditions of have higher measurement accuracy.
Description
Technical field
The present invention relates to a kind of vehicle dimension measuring method based on raster scanning, the structure realizes a kind of in three dimensions
Function adjustable on degree, that measurement is scanned to large scale steel plate.The data meter that the algorithm can be sent according to measurement grating
The length and height of corresponding vehicle headstock, vehicle body, the tailstock are calculated, the equipment and algorithm operate steadily, are safe and reliable, are connect in nothing
Touch, without there is higher measurement accuracy under conditions of parking.
Background technology
With Digital Image Processing and the rise of machine vision and development, intelligent three-dimensional garage knows advanced intellective IC card
The video image storage of other technology and high speed is relatively combined, and by the image procossing and automatic identification of computer, vehicle is entered
Go out the charge in parking lot, security personnel, parking stall guiding etc. and carry out omnibearing management.Intelligent three-dimensional garage management system is using contactless
Voucher of the intellective IC card as vehicle discrepancy parking lot, monitors out admission vehicle, with super in real time with advanced image comparison function
Big LED display guiding car owner finds its allocated garage stall, every with stable communication and powerful data base administration
One car and parking space information, with the multidate information of the real-time monitoring site storing cycle of advanced electronic map；Completely solve existing
There is security hidden trouble existing for parking lot.
For parking stall guiding and the distribution of parking stall, in order to improve the efficiency of parking, vehicle is reduced in docking process
Damage, and accomplish that parking stall is distributed automatically, it is necessary to vehicle dimension is measured, to distribute suitable size, proper height
Parking stall, improve garage utilization rate.
The content of the invention
The invention aims to develop the non-contact type vehicle dimension automatic measurement system in a set of vehicular motion
System, therefore, the technical solution adopted by the present invention：
Vehicle dimension measuring method based on raster scanning, including longitudinal scanning grating to, transversal scanning grating to, more strings
Mouth turns TCP/IP serial servers, vehicle dimension computational algorithm；It is characterized in that：
The longitudinal scanning grating includes a pair of correlation light curtains to (101), and light curtain is by a photophore and a light
Device forms, optical axis interval 20mm, and light beam spot quantity is 92, detection range 1820mm, is 3m to penetrating distance, mono- using RS485
The work way of output.The grating is disposed vertically in vehicle at, and when vehicle passes through the longitudinal scanning grating, grating can pass through
Serial ports sends the block information to penetrating laser beam of current light curtain, and the car at the moment can be obtained by vehicle dimension computational algorithm
Height, while longitudinal scanning grating coordinates vehicle lateral speed data and time of vehicle operation to calculate to obtain vehicle body difference position
The height put；
The transversal scanning grating includes a pair of correlation light curtains to (102), and light curtain is by a photophore and a light
Device forms, optical axis interval 20mm, and light beam spot quantity is 92, detection range 1820mm, is 3m to penetrating distance, mono- using RS485
The work way of output.The longitudinal scanning grating is placed horizontally in front of transversal scanning grating, and when vehicle passes through, grating can pass through
Serial ports sends the block information to penetrating laser beam of current light curtain, by vehicle dimension computational algorithm can calculate vehicle length
And the speed of vehicle；
The Multi-serial port turns what TCP/IP serial servers (201) sent longitudinal scanning grating and transversal scanning grating
RS485 serial datas change into TCP/IP Ethernets, and are communicated using Socket with computer, and serial server can realize four strings
Mouth turns TCP/IP and avoids the problems such as response speed that PC is directly connected to occur during Multi-serial port is slow, frame synchronization is difficult；
The vehicle dimension computational algorithm includes gathered data pretreatment, the decoding of data and calculating, vehicle dimension information
Display is drawn with vehicle shape.Gathered data pretreatment include carrying out the two paths of data received respectively CRC16 verifications,
Remove individually exceptional value, the data syn-chronization of multichannel data, and Data Matching of portraitlandscape raster etc. among light curtain；
Data decode mainly calculates the corresponding data of vehicle with calculating with the data of blocking for crossing the light beam spot that light curtain is sent, wherein wrapping
Include and calculate height of car information and vehicle speed information, the calculating of elevation information is found in light curtain is not blocked most by automobile
Low spot, present level is may know that by the way that distance is corresponding, and because horizontal positioned light curtain length is 2m in speed calculating, and it is big
Most Vehicle lengths occur in vehicle travels from right to left and blocked on the right side of light curtain, all blocked, left side screening more than 2m
Three kinds of feelings are kept off, because horizontal light curtain has whole circumstance of occlusion, it is necessary to handle the data of horizontal light curtain, pass through interpolation
Method estimates car speed, and Vehicle length is calculated with this, and corresponding with height of car；Vehicle dimension presentation of information and vehicle shape
Shape, which is drawn, includes the software at a set of PC ends, and the software can realize the drafting of vehicle shape, headstock, vehicle body, the tailstock division with
And the calculating of length height.
The present invention has the following technical effect that：
1. can it is contactless, without parking in the case of vehicle dimension is measured, save time of measuring；
2. car speed and Vehicle length are measured to penetrating grating using horizontal；
3. height of car is measured to penetrating grating using longitudinal direction, and it is corresponding with length；
4. measuring speed is fast, measurement process is easy, only needs the measured grating of vehicle to complete to measure, without waiting for i.e.
It can obtain measurement result；
5. there is higher expansibility, can be by increasing grating quantity, increase to irradiating light beam quantity, to reach more smart
True measurement result.
Brief description of the drawings
Fig. 1：Measuring system schematic diagram of the present invention；
Fig. 2：Measurement process schematic diagram of the present invention；
Fig. 3：Measuring light screen structural representation；
Fig. 4：Measurement result schematic diagram.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings：
As shown in figure 1, the longitudinal scanning grating includes a pair of correlation light curtains to (101), light curtain is by a photophore
Formed with a light-receiving device, optical axis interval 20mm, light beam spot quantity is 92, detection range 1820mm, is 3m to penetrating distance, adopts
With the RS485 either simplex way of outputs.The grating is disposed vertically in vehicle at, when vehicle passes through the longitudinal scanning grating, light
Grid can send the block information to penetrating laser beam of current light curtain by serial ports, can be obtained by vehicle dimension computational algorithm
The height of car at the moment, while longitudinal scanning grating coordinates vehicle lateral speed data and time of vehicle operation to calculate
The height of vehicle body diverse location；
The transversal scanning grating includes a pair of correlation light curtains to (102), and light curtain is by a photophore and a light
Device forms, optical axis interval 20mm, and light beam spot quantity is 92, detection range 1820mm, is 3m to penetrating distance, mono- using RS485
The work way of output.The longitudinal scanning grating is placed horizontally in front of transversal scanning grating, and when vehicle passes through, grating can pass through
Serial ports sends the block information to penetrating laser beam of current light curtain, by vehicle dimension computational algorithm can calculate vehicle length
And the speed of vehicle；
The Multi-serial port turns what TCP/IP serial servers (201) sent longitudinal scanning grating and transversal scanning grating
RS485 serial datas change into TCP/IP Ethernets, and are communicated using Socket with computer, and serial server can realize four strings
Mouth turns TCP/IP and avoids the problems such as response speed that PC is directly connected to occur during Multi-serial port is slow, frame synchronization is difficult；
The vehicle dimension computational algorithm includes gathered data pretreatment, the decoding of data and calculating, vehicle dimension information
Display is drawn with vehicle shape.Gathered data pretreatment include carrying out the two paths of data received respectively CRC16 verifications,
Remove individually exceptional value, the data syn-chronization of multichannel data, and Data Matching of portraitlandscape raster etc. among light curtain；
Data decode mainly calculates the corresponding data of vehicle with calculating with the data of blocking for crossing the light beam spot that light curtain is sent, wherein wrapping
Include and calculate height of car information and vehicle speed information, the calculating of elevation information is found in light curtain is not blocked most by automobile
Low spot, present level is may know that by the way that distance is corresponding, and because horizontal positioned light curtain length is 2m in speed calculating, and it is big
Most Vehicle lengths occur in vehicle travels from right to left and blocked on the right side of light curtain, all blocked, left side screening more than 2m
Three kinds of feelings are kept off, because horizontal light curtain has whole circumstance of occlusion, it is necessary to handle the data of horizontal light curtain, pass through interpolation
Method estimates car speed, and Vehicle length is calculated with this, and corresponding with height of car；Vehicle dimension presentation of information and vehicle shape
Shape, which is drawn, includes the software at a set of PC ends, and the software can realize the drafting of vehicle shape, headstock, vehicle body, the tailstock division with
And the calculating of length height.
The harvester includes camera connector (205) and light source coupler (401).The camera connector is fixed on
On mechanical arm 3 (203), height can be adjusted with the up and down motion of mechanical arm 3 (203), can moving left and right with mechanical arm 2 (202)
Adjust left and right view field.The light source coupler (401) is installed on the low side of mechanical arm 2 (202), adjustable angle, light source installation
Thereon.
Measurement process is as shown in figure 1, when starting working, and tested vehicle drives into measured zone, by longitudinal light curtain, with laggard
Enter horizontal light curtain, until the tailstock rolls horizontal light curtain away from, during being somebody's turn to do, blocked if light curtain is present, that is, the vehicle height value parsed
It is not zero, vehicle dimension can be calculated, and height of car information and velocity information are preserved, by verifies, decoding synchronization
Vehicle dimension is calculated etc. step and is shown.
Because vehicle shape is varied, therefore when vehicle dimension calculates generation exception or can not calculated, system can carry
Show and remeasure.
The main feature of the present invention：Can it is contactless, without parking in the case of vehicle dimension is measured.Measurement
Speed is fast, and measurement process is easy, only needs the measured grating of vehicle to complete to measure, and is tied without waiting for can obtain measurement
Fruit., can be by increasing grating quantity, increase to irradiating light beam quantity, to reach more accurate survey with higher expansibility
Measure result.
The description to embodiment the invention is not restricted to more than, those skilled in the art according to disclosure of the present invention,
The creative work improvement and modification that be carried out need not be passed through on the basis of the present invention, all should protection scope of the present invention it
It is interior.
Claims (5)
1. the vehicle dimension measuring method based on raster scanning, it is characterised in that comprise the following steps：
(1) longitudinal scannings grating pair；
(2) transversal scanning grating pair；
(3) Multi-serial ports turn TCP/IP serial servers；
(4) vehicle dimensions computational algorithm.
2. the vehicle dimension measuring method according to claim 1 based on raster scanning, it is characterised in that in step (1),
Longitudinal scanning grating includes a pair of correlation light curtains to (101), and light curtain is made up of a photophore and a light-receiving device, between optical axis
Every 20mm, light beam spot quantity is 92, detection range 1820mm, is 3m to penetrating distance, using the RS485 either simplex way of outputs.Should
Grating is disposed vertically in vehicle at, and when vehicle passes through the longitudinal scanning grating, grating can be sent current by serial ports
The block information to penetrating laser beam of light curtain, the height of car at the moment can be obtained by vehicle dimension computational algorithm, simultaneously
Longitudinal scanning grating coordinate vehicle lateral speed data and time of vehicle operation to calculate vehicle body diverse location height.
3. the vehicle dimension measuring method according to claim 1 based on raster scanning, it is characterised in that in step (2),
Transversal scanning grating includes a pair of correlation light curtains to (102), and light curtain is made up of a photophore and a light-receiving device, between optical axis
Every 20mm, light beam spot quantity is 92, detection range 1820mm, is 3m to penetrating distance, using the RS485 either simplex way of outputs.Should
Longitudinal scanning grating is placed horizontally in front of transversal scanning grating, and when vehicle passes through, grating can be sent current by serial ports
The block information to penetrating laser beam of light curtain, the length of vehicle and the speed of vehicle can be calculated to obtain by vehicle dimension computational algorithm
Degree.
4. the vehicle dimension measuring method according to claim 1 based on raster scanning, it is characterised in that in step (3),
Multi-serial port turns the RS485 serial datas that TCP/IP serial servers (201) send longitudinal scanning grating and transversal scanning grating
TCP/IP Ethernets are changed into, and are communicated using Socket with computer, serial server can realize that four serial ports turn TCP/IP and kept away
The problems such as response speed that PC is directly connected to occur during Multi-serial port is slow, frame synchronization is difficult is exempted from.
5. the vehicle dimension measuring method according to claim 1 based on raster scanning, it is characterised in that in step (4),
Vehicle dimension computational algorithm includes gathered data pretreatment, the decoding of data and calculating, vehicle dimension presentation of information and vehicle shape
Shape is drawn.The gathered data pretreatment includes carrying out the two paths of data received respectively CRC16 verifications, removed among light curtain
Single exceptional value, the data syn-chronization of multichannel data, and Data Matching of portraitlandscape raster etc.；Data decode and meter
Calculate mainly with the corresponding data for blocking data and calculating vehicle for crossing the light beam spot that light curtain is sent, it is high including vehicle is calculated
Spend information and vehicle speed information, the minimum point do not blocked in light curtain by automobile is found in the calculating of elevation information, by away from
Present level is may know that from corresponding, and because horizontal positioned light curtain length is 2m in speed calculating, and most of vehicles are grown
Degree occurs that light curtain right side is blocked, whole is blocked, three kinds of feelings are blocked in left side more than 2m in vehicle travels from right to left,
Because horizontal light curtain has whole circumstance of occlusion, it is necessary to handle the data of horizontal light curtain, estimated by the method for interpolation
Go out car speed, Vehicle length is calculated with this, and it is corresponding with height of car；Vehicle dimension presentation of information is drawn with vehicle shape and wrapped
The software at a set of PC ends is included, the software can realize the drafting of vehicle shape, and headstock, vehicle body, the division of the tailstock and length are high
The calculating of degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710967885.6A CN107677208A (en) | 2017-10-17 | 2017-10-17 | Vehicle dimension measuring method based on raster scanning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710967885.6A CN107677208A (en) | 2017-10-17 | 2017-10-17 | Vehicle dimension measuring method based on raster scanning |
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| Publication Number | Publication Date |
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| CN107677208A true CN107677208A (en) | 2018-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710967885.6A Pending CN107677208A (en) | 2017-10-17 | 2017-10-17 | Vehicle dimension measuring method based on raster scanning |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112325818A (en) * | 2020-11-09 | 2021-02-05 | 东风汽车集团有限公司 | Quality analysis early warning method for body-in-white size |
| CN112461138A (en) * | 2020-11-18 | 2021-03-09 | 苏州迈之升电子科技有限公司 | Cross scanning measurement method, measurement grating and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112325818A (en) * | 2020-11-09 | 2021-02-05 | 东风汽车集团有限公司 | Quality analysis early warning method for body-in-white size |
| CN112461138A (en) * | 2020-11-18 | 2021-03-09 | 苏州迈之升电子科技有限公司 | Cross scanning measurement method, measurement grating and application thereof |
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Application publication date: 20180209 |