CN106705844A - Method for measuring size and contour of vehicle - Google Patents
Method for measuring size and contour of vehicle Download PDFInfo
- Publication number
- CN106705844A CN106705844A CN201611268176.0A CN201611268176A CN106705844A CN 106705844 A CN106705844 A CN 106705844A CN 201611268176 A CN201611268176 A CN 201611268176A CN 106705844 A CN106705844 A CN 106705844A
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- measured
- range finder
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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
-
- 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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/06—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring contours or curvatures
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The present invention discloses a method for measuring the size and the contour of a vehicle. A distance measurement unit, a calculation unit, a measurement area, a ground and a vehicle to be measured are provided in the invention. The distance measurement unit is installed around a measurement area and is connected with the calculation unit, a vehicle to be measured enters the measurement area, and the distance measurement unit measures the space distances of the left side, the right side, the top and the front of the vehicle to be measured and sends the space distances to the calculation unit to calculate the size and the contour of the vehicle to be measured. The method for measuring size and contour of the vehicle is simple in construction, low in cost and rapid and accurate, and has good popularization values.
Description
Technical field
The present invention relates to physical dimension fields of measurement, more particularly to a kind of measuring vehicle size and profile method.
Background technology
As economic society sustainable development, car ownership present a rapidly rising trend, intelligent car washing installation is promoted to occur big
Amount the market demand, in order to improve intelligent car washing installation efficiency, it is necessary to one kind quickly and easily measure vehicle dimension to be washed and
The apparatus of profile；Existing measuring vehicle size, the method for profile have visual pattern mode, laser scanning methodses etc., such as
Patent Office of the People's Republic of China's issued patents number：The technological invention of CN201510096541.3 and CN201310396183.9.
The know-why of China Patent No. CN201510096541.3 is, using computer to the vision figure of vehicle in track
As carrying out conversion treatment, vehicle image to be measured is obtained, the pixel to image border is calculated vehicle dimension and outline data.
The know-why of China Patent No. CN201310396183.9 is that send out device with array laser irradiates to target vehicle
Multiple laser, influences respective sensor to receive laser light barrier using vehicle, and using CCD camera to being incident upon vehicle
The number of spots statistics of appearance, obtains the size and profile numerical value of vehicle.
All there are system constructing complexity, computer operation image data in above-mentioned visual pattern mode and laser scanning methodses
The shortcomings of big, the with high costs, precision of amount is limited by pixel and number of spots, makes such technology be dfficult to apply to car washing installation.
The content of the invention
The present invention is to solve the above problems, there is provided a kind of new solution that is simple and quick, meeting required precision, its
It is characterised by：It is made up of range cells, computing unit, measured zone, ground and vehicle to be measured；Range cells are arranged on measurement zone
Around domain, range cells are connected to computing unit, and vehicle traveling to be measured enters measured zone, and range cells measure vehicle to be measured
The space length in left side, right side, top and front, is sent to size and profile that computing unit calculates vehicle to be measured.
The beneficial effects of the invention are as follows using the range finder module of low cost, to travelling its week of vehicle into measured zone
Confining space measurement distance, calculates the length sized data of vehicle；Continuously record every section of forward travel away from
From measured sized data, it can be deduced that the change curve of surface of vehicle, further the specific of vehicle is obtained through graphic operation
Profile；The present invention have simple structure, it is with low cost, quick and precisely the characteristics of, thus with good promotional value.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute the part of specification, with following tool
Body implementation method is used to explain the present invention together, but is not construed as limiting the invention, in the accompanying drawings：
Fig. 1 is the measuring principle block diagram of the method for a kind of measuring vehicle size of the invention and profile；
Fig. 2 is the measuring vehicle width of the embodiment of the method for a kind of measuring vehicle size of the invention and profile and highly schematic
Figure；
Fig. 3 is the measuring vehicle length schematic diagram of the embodiment of the method for a kind of measuring vehicle size of the invention and profile；
Fig. 4 is the measuring vehicle outline drawing of the embodiment of the method for a kind of measuring vehicle size of the invention and profile；
Fig. 5 is the schematic diagram of the increase range finder module of the embodiment of the method for a kind of measuring vehicle size of the invention and profile；
In the accompanying drawings, 1. left range finder module, 2. right range finder module, 3. goes up range finder module, 4. before range finder module, 5. range cells,
6. computing unit, 7. measured zone, 8. ground, 9 vehicles to be measured；In Figure 5,10. in distance measuring sensor.
Specific embodiment
In order that those skilled in the art more fully understand technical solution of the present invention, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is described；In the description of the invention, term " on ", D score,
"left", "right", "front", "rear", " inner ", " outward ", " level ", the direction word of " vertical " are gone only for the direction with accompanying drawing
Description, it is impossible to be interpreted as the limitation to application direction.
As depicted in figs. 1 and 2, the composition of the embodiment of the present invention is included：Range cells（5）, computing unit（6）, measurement
Region（7）, ground（8）With vehicle to be measured（9）.
As shown in Fig. 2 described range cells（5）It is made up of multiple independent range finder modules, preferably 4 surveys of the present embodiment
Away from module, include：
Left range finder module（1）, installed in measured zone（7）The left side, for measuring vehicle to be measured（9）Left side space length；
Right range finder module（2）, installed in measured zone（7）The right side, for measuring vehicle to be measured（9）The right space length；
Upper range finder module（3）, installed in measured zone（7）Above, for measuring vehicle to be measured（9）Headroom distance；
Preceding range finder module（4）, installed in measured zone（7）The inside, for measuring vehicle to be measured（9）Front space distance.
Described range finder module can be ultrasonic distance measuring module, or laser ranging module, or ultrasound
The range finder module of ripple range finder module and laser ranging block combiner.
Described ultrasonic distance measuring module its operation principle is, ultrasonic transmission device to objective emission ultrasonic signal,
Target obstacle back reflection portion of ultrasonic sound wave signal tieback receiving apparatus are run into, ultrasonic signal is calculated from being issued to by processor
The flight time for returning is received, distance is calculated according to distance=speed * time/2.
Described its operation principle of laser ranging module is that laser beam emitting device runs into mesh to objective emission laser pulse
Mark barrier back reflection fraction of laser light pulse tieback receiving apparatus, after special chip is to signal amplification and phase bit comparison, by
Reason device calculates the flight time of laser pulse, and distance is calculated according to distance=speed * time/2；
Above-mentioned ultrasonic distance measuring module and laser ranging module can directly be bought in the product for having maturation on the market.
In embodiments of the present invention, described range finder module also includes：
Left range finder module（1）With right range finder module（2）Apart from ground（8）Height is 0.2-1.8m, left range finder module（1）It is preferred
Height is 0.3m, right range finder module（2）Preferred height be 0.4m；
Preceding range finder module（4）Apart from ground（8）Height is 0.1-2.8m, and preferably height is 0.5m；
Upper range finder module（3）Apart from ground（8）Height is 1.5-4m, and preferably height is 2.8m；
Left range finder module（1）With right range finder module（2）Vertical range be 1.8-5.0m, preferably 3.0m；
Upper range finder module（3）With preceding range finder module（4）Vertical range be 3.0-8.0m, preferably 6.0m；
Left range finder module（1）, right range finder module（2）With preceding range finder module（4）Measurement point to be horizontally oriented；
Upper range finder module（3）Measurement point to be vertically oriented.
Left range finder module（1）, right range finder module（2）With upper range finder module（3）One is constituted on same cross section
Doorframe shape, left range finder module（1）With right range finder module（2）There are 0.1m level height gaps, measurement signal is avoided for staggering
Generation is interfered, and each range finder module constitutes an elongated cube measurement space.
Measure vehicle to be measured（9）Profile when need set a configuration sampling value, configuration sampling value can be 1-50cm,
The preferred configuration sampling value of the present embodiment is 10cm.
Measured zone described in this implementation row（7）It can be a space, or with steel, aluminium or glass
The space that glass is built, the space can accommodate down vehicle to be measured（9）And the space length of 0.2-2m is reserved with around.
Described computing unit（6）Can be MCU microcontrollers, or DSP digital processing units, or CPU
Microprocessor or industrial computer.
Measure and calculate vehicle to be measured（9）The procedure of size and profile is as follows.
The width method for measuring and calculating vehicle to be measured is, as shown in Fig. 2 setting left range finder module（1）With right range finder module
（2）Distance=W1, vehicle to be measured（9）Traveling enters measured zone（7）By left range finder module（1）With right range finder module（2）'s
Measurement range, left range finder module（1）Measurement is obtained and vehicle to be measured（9）Distance be set to WL, right range finder module（2）Measurement is obtained
With vehicle to be measured（9）Distance be set to WR, computing unit（6）Press：Vehicle to be measured（9）Width=W1-WL-WR try to achieve.
Measure and calculate vehicle to be measured（9）Height method be, as shown in Fig. 2 setting range finder module（3）Apart from ground
（8）Highly=H1, vehicle to be measured（9）Traveling enters upper range finder module（3）Measurement range, measurement obtain range finder module（3）With
Vehicle to be measured（9）Distance from top be set to=H2, computing unit（6）Press：Vehicle to be measured（9）Height=H1-H2 try to achieve.
Measure and calculate vehicle to be measured（9）Length method be, as shown in figure 3, vehicle to be measured（9）Traveling enters measurement zone
Domain（7）Range finder module in arrival（3）Measurement range when, record preceding range finder module（4）Measured value be L1, vehicle to be measured
（9）Continue to move forward until leaving upper range finder module（3）Measurement range when, record preceding range finder module（4）Measured value
It is L2, computing unit（6）Press：Vehicle to be measured（9）Length=L1-L2 is tried to achieve, above-mentioned upper range finder module（3）, or with left
Range finder module（1）Or right range finder module（2）Instead of.
Measure and calculate vehicle to be measured（9）The method of profile is：It is made up of 3 parts, includes measurement vehicle to be measured（9）
Top profile, measure vehicle to be measured（9）Left side profile and measurement vehicle to be measured（9）Right side profile；Measure vehicle to be measured
（9）The method of top profile be：As shown in figure 4, vehicle to be measured（9）Drive to range finder module（3）Measurement range when, note
Range finder module before record is lower（4）The corresponding upper range finder module of measured value（3）Measured value is simultaneously labeled as T1；Vehicle to be measured（9）Continue to
Before drive to when meeting △ configuration sampling value 10cm, record preceding range finder module（4）The corresponding upper range finder module of measured value（3）Survey
Value is simultaneously labeled as T2, repeats the above steps, until vehicle to be measured（9）Move forward and leave range finder module（3）Measurement model
Terminate when enclosing, the numerical value that measurement is obtained is respectively that T1, T2, T3, TN.... are sent to computing unit（6）, computing unit（6）By number
Value removes upper range finder module（3）Height, obtain vehicle to be measured（9）Corresponding height number, computing unit（6）Transported by figure
Calculation obtains vehicle to be measured（9）Top profile；Measure vehicle to be measured（9）The method of left side profile and right side profile and above-mentioned survey
Amount top profile is identical, and the technical staff to this professional domain can be to understand and can implement, so description is not repeated.
It is above-mentioned every measurement process and step separate independent description be for ease of understanding principle of the invention and method,
In actual applications, vehicle to be measured（9）Traveling enters measured zone（7）, from the upper range finder module of arrival（3）Measurement range start
To leaving upper range finder module（3）Measurement range terminate, measured value is continuously sent to computing unit by each range finder module
（6）, including vehicle to be measured（9）Width, height, length and outline data；Computing unit in measurement（6）According to preceding range finder module
（4）The distance change of measurement and valid data preferably wherein, wrong measurement data is contained to eliminate；Such as vehicle to be measured（9）To
It is possible that stopping, moveing backward or correct the factors such as travel direction during preceding traveling, and produce the measurement number of partial error
Value, can combine preceding range finder module（4）Measured value logarithm it is judged that and preferably correcting mistake.
In the present invention, preceding range finder module（4）Highly be set to 10cm, measurement orientation angle is adjusted up 5 °, at this moment before
Spacing module（4）Vehicle to be measured is not interfered with（9）Drive through measured zone（7）, certainty of measurement can combine trigonometric function meter
Calculate amendment.
In the present invention, range finder module can be increased to improve certainty of measurement and dimension, as shown in figure 5, in left range finding mould
Block（1）Range finder module in increasing at the 2-5m distances of the right（10）, by relatively more left range finder module（1）With middle range finder module（10）'s
Difference, can calculate vehicle to be measured（9）Put drift angle, further can calculate and correct due to be measured by trigonometric function
Vehicle（9）Put the error just not produced；The present invention can also be in measured zone（7）Top, the left side, the right or front increase
Range finder module quantity further improves certainty of measurement.
In the present invention, vehicle to be measured（9）Traveling enters measured zone（7）During, left range finder module（1）With right range finding
Module（2）Measurement target further comprises automobile tire, be able to detect that tire and vehicle body using the range finder module of laser technology
Between the distance change that causes of gap, it is possible thereby to reference to preceding range finder module（4）Measured value calculate the standard of vehicle tyre
True position, this has very great help for intelligent carwash application.
In the present invention, vehicle to be measured（9）Before measured zone is entered, left range finder module（1）With right range finder module（2）Survey
The distance values measured are equal to W1, upper range finder module（3）The height number for measuring be equal to H1, preceding range finder module measure away from
It is more than L1 from numerical value；Thus can be used to determine whether vehicle to be measured（9）Into measured zone（7）.
It is apparent that described embodiment is only a part of embodiment of the invention, without of the invention in limiting
Protection domain, all within spirit of the invention and principle, any modification, equivalent substitution and improvements done etc. should be included in this
Within the protection domain of invention.
Claims (10)
1. a kind of method of measuring vehicle size and profile, it is characterised in that by range cells, computing unit, measured zone,
Face and vehicle to be measured are constituted；Range cells are arranged on around measured zone, and range cells are connected to computing unit, vehicle row to be measured
Drive into measured zone, range cells measure the space length in left side, right side, top and the front of vehicle to be measured, are sent to meter
Calculate size and profile that unit calculates vehicle to be measured.
2. method according to claim 1, it is characterised in that described range cells are by multiple independent range finder module groups
Into preferably 4 range finder modules include：
Left range finder module, installed in the measured zone left side, the left side space length for measuring vehicle to be measured；
Right range finder module, installed in the measured zone right side, the right space length for measuring vehicle to be measured；
Upper range finder module, above measured zone, the headroom distance for measuring vehicle to be measured；
Preceding range finder module, installed in measured zone the inside, the front space distance for measuring vehicle to be measured.
3. method according to claim 2, it is characterised in that described range finder module can be ultrasonic distance measuring module,
It can also be the range finder module of laser ranging module, or ultrasonic distance measuring module and laser ranging block combiner.
4. method according to claim 2, it is characterised in that described range finder module also includes：
Left range finder module and right range finder module are 0.2-1.8m apart from ground level, and the preferred height of left range finder module is 0.3m,
The preferred height of right range finder module is 0.4m；
Preceding range finder module is 0.1-2.8m apart from ground level, and preferably height is 0.5m；
Upper range finder module is 1.5-4m apart from ground level, and preferably height is 2.8m；
Left range finder module is 1.8-5.0m with the vertical range of right range finder module, preferably 3.0m；
Upper range finder module is 3.0-8.0m with the vertical range of preceding range finder module, preferably 6.0m；
The measurement of left range finder module, right range finder module and preceding range finder module is pointed to and is horizontally oriented；
The measurement of upper range finder module is pointed to and is vertically oriented.
5. method according to claim 1, it is characterised in that described measured zone can be a space,
Can be the space built with steel, aluminium or glass, the space can accommodate down vehicle to be measured.
6. method according to claim 1, it is characterised in that described computing unit can be MCU microcontrollers, also may be used
Being DSP digital processing units, or CPU microprocessor or industrial computer.
7. method according to claim 1, it is characterised in that the width method for measuring and calculating vehicle to be measured is, if left
Distance=the W1 of range finder module and right range finder module, vehicle traveling to be measured enters measured zone by left range finder module and right range finding
The measurement range of module, left range finder module measurement obtains being set to WL with the distance of vehicle to be measured, right range finder module measurement obtain with
The distance of vehicle to be measured is set to WR, and the width=W1-WL-WR of vehicle to be measured is tried to achieve.
8. method according to claim 1, it is characterised in that the height method for measuring and calculating vehicle to be measured is, if on
Range finder module enters the measurement range of upper range finder module apart from ground level=H1, vehicle traveling to be measured, and measurement obtains range finding mould
Block is set to=H2 with the distance from top of vehicle to be measured, and the height=H1-H2 of vehicle to be measured is tried to achieve.
9. method according to claim 1, it is characterised in that the length method for measuring and calculating vehicle to be measured is, to be measured
When vehicle traveling enters the measurement range of measured zone arrival upper range finder module, the measured value of preceding range finder module is recorded for L1,
Vehicle to be measured continues to move forward when the measurement range for leaving upper range finder module, and the measured value for recording preceding range finder module is
L2, Vehicle length=L1-L2 to be measured is tried to achieve, above-mentioned upper range finder module, or with left range finder module or right range finder module generation
Replace.
10. method according to claim 1, it is characterised in that the method for measuring and calculating vehicle's contour to be measured is, including
The method for having the top profile for measuring vehicle to be measured is：When vehicle to be measured drives to the measurement range of range finder module, record
The corresponding upper range finder module measured value of preceding range finder module measured value is simultaneously labeled as T1；Vehicle to be measured continues to move forward to meeting △
During configuration sampling value, the corresponding upper range finder module measured value of preceding range finder module measured value is recorded and labeled as T2, repeat above-mentioned
Step, terminates when forward travel to be measured leaves the measurement range of upper range finder module, and the numerical value that measurement is obtained is respectively
T1, T2, T3, TN.... are sent to computing unit, and numerical value is removed the height of upper range finder module, vehicle to be measured is obtained for computing unit
Corresponding height number, computing unit obtains the top profile of vehicle to be measured by graphic operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611268176.0A CN106705844A (en) | 2016-12-31 | 2016-12-31 | Method for measuring size and contour of vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611268176.0A CN106705844A (en) | 2016-12-31 | 2016-12-31 | Method for measuring size and contour of vehicle |
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| CN106705844A true CN106705844A (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611268176.0A Pending CN106705844A (en) | 2016-12-31 | 2016-12-31 | Method for measuring size and contour of vehicle |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107323431A (en) * | 2017-06-30 | 2017-11-07 | 成都科立达科技有限公司 | Method for building up for the car model of carwash |
| CN107945327A (en) * | 2017-11-20 | 2018-04-20 | 成都市康睿运动科技有限公司 | A kind of unattended gymnasium access control system |
| CN107990831A (en) * | 2017-12-27 | 2018-05-04 | 同方威视技术股份有限公司 | Vehicle length measuring device and vehicle outer contour measuring system |
| CN108253896A (en) * | 2018-03-06 | 2018-07-06 | 大连理工大学 | A kind of car dimension measuring device based on laser sensor |
| CN108597194A (en) * | 2018-04-16 | 2018-09-28 | Oppo广东移动通信有限公司 | alarm method, device, terminal device and storage medium |
| CN108981627A (en) * | 2018-08-13 | 2018-12-11 | 广东天骄智能制造要素配置有限公司 | Vehicle's contour measuring device and measuring method |
| CN109668523A (en) * | 2019-02-14 | 2019-04-23 | 宁波中令清洁技术有限公司 | A kind of detection device and its detection method of vehicle outer profile |
| CN109916305A (en) * | 2019-04-18 | 2019-06-21 | 郑永康 | Vehicle dimension measuring system and method based on optoelectronic induction and TOF technology |
| CN111964608A (en) * | 2020-10-20 | 2020-11-20 | 天津美腾科技股份有限公司 | Automobile outline dimension detection method and automobile outline dimension detection device |
| CN112611574A (en) * | 2020-11-30 | 2021-04-06 | 重庆长安汽车股份有限公司 | Vehicle wheel base measuring method |
| CN114152216A (en) * | 2021-12-07 | 2022-03-08 | 合肥市极点科技有限公司 | Contour measuring equipment based on machine vision |
| CN114370824A (en) * | 2021-12-30 | 2022-04-19 | 北京无线电计量测试研究所 | Wheel diameter measuring device and measuring method |
| CN114370824B (en) * | 2021-12-30 | 2024-06-04 | 北京无线电计量测试研究所 | Wheel diameter measuring device and measuring method |
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2016
- 2016-12-31 CN CN201611268176.0A patent/CN106705844A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107323431A (en) * | 2017-06-30 | 2017-11-07 | 成都科立达科技有限公司 | Method for building up for the car model of carwash |
| CN107945327A (en) * | 2017-11-20 | 2018-04-20 | 成都市康睿运动科技有限公司 | A kind of unattended gymnasium access control system |
| CN107990831A (en) * | 2017-12-27 | 2018-05-04 | 同方威视技术股份有限公司 | Vehicle length measuring device and vehicle outer contour measuring system |
| CN107990831B (en) * | 2017-12-27 | 2024-05-28 | 同方威视技术股份有限公司 | Vehicle length measuring device and vehicle outline measuring system |
| CN108253896A (en) * | 2018-03-06 | 2018-07-06 | 大连理工大学 | A kind of car dimension measuring device based on laser sensor |
| CN108597194A (en) * | 2018-04-16 | 2018-09-28 | Oppo广东移动通信有限公司 | alarm method, device, terminal device and storage medium |
| CN108981627A (en) * | 2018-08-13 | 2018-12-11 | 广东天骄智能制造要素配置有限公司 | Vehicle's contour measuring device and measuring method |
| CN109668523B (en) * | 2019-02-14 | 2022-06-03 | 宁波中令清洁技术有限公司 | Detection apparatus for vehicle outline |
| CN109668523A (en) * | 2019-02-14 | 2019-04-23 | 宁波中令清洁技术有限公司 | A kind of detection device and its detection method of vehicle outer profile |
| CN109916305A (en) * | 2019-04-18 | 2019-06-21 | 郑永康 | Vehicle dimension measuring system and method based on optoelectronic induction and TOF technology |
| CN111964608A (en) * | 2020-10-20 | 2020-11-20 | 天津美腾科技股份有限公司 | Automobile outline dimension detection method and automobile outline dimension detection device |
| CN112611574A (en) * | 2020-11-30 | 2021-04-06 | 重庆长安汽车股份有限公司 | Vehicle wheel base measuring method |
| CN112611574B (en) * | 2020-11-30 | 2022-08-09 | 重庆长安汽车股份有限公司 | Vehicle wheel base measuring method |
| CN114152216A (en) * | 2021-12-07 | 2022-03-08 | 合肥市极点科技有限公司 | Contour measuring equipment based on machine vision |
| CN114370824A (en) * | 2021-12-30 | 2022-04-19 | 北京无线电计量测试研究所 | Wheel diameter measuring device and measuring method |
| CN114370824B (en) * | 2021-12-30 | 2024-06-04 | 北京无线电计量测试研究所 | Wheel diameter measuring device and measuring method |
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Application publication date: 20170524 |