CN102589458A - Automobile chassis metal plate detecting system and method - Google Patents
Automobile chassis metal plate detecting system and method Download PDFInfo
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- CN102589458A CN102589458A CN2011104340530A CN201110434053A CN102589458A CN 102589458 A CN102589458 A CN 102589458A CN 2011104340530 A CN2011104340530 A CN 2011104340530A CN 201110434053 A CN201110434053 A CN 201110434053A CN 102589458 A CN102589458 A CN 102589458A
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Abstract
The invention discloses an automobile chassis metal plate detecting system and an automobile chassis metal plate detecting method. The detecting system comprises a reflection target, at least one camera and a photographing and measuring system. The reflection target comprises a lattice array mark and fixed contact points which are contacted with the surface of the chassis; the lattice array mark is arranged on the surface of the reflection target; and the camera is aligned with the lattice array mark of the reflection target. The method includes the following steps of: (1)measuring the chassis through the reflection target and the camera and building a three-dimensional coordinate system by taking the three coordinate points of the undeformed parts of the chassis as the zero benchmark of the plane; (2) measuring the deformed part of the chassis through the reflection target and the camera and comparing the deformation with the three-dimensional coordinate system and the zero benchmark of the plane to obtain the error; and (3) obtaining the coordinates of the deformed part and the error dimensions. According to the invention, data is collected and visual coordinate systems are built for comparison, so the difficulty in repairing the automobile chassis is reduced, the repairing quality is improved and the dimensions of the repaired automobile chassis are ensured to be consistent with the dimensions when the automobile chassis leaves the factory.
Description
Technical field
The present invention relates to the vehicle detection technical field, particularly a kind of automobile chassis panel beating detection system and method thereof.
Background technology
The development in recent years of domestic automobile reconditioning facility industry is very fast, has progressively formed the leading enterprise of some industries.Some knowledgeable people have invested the foreign market with the development eye of enterprise and industry; Mode through commission merchant or self-built representative office is developed overseas business; This trend meets the China status in world economy situation at present, is that following vapour is protected the fast-developing main growth pattern of equipment industry.Along with the development like a raging fire of Chinese automobile market, the prospect of Chinese automobile aftermarket also gets most of the attention.Wherein the maximum especially beneficiary in market is maintained in auto repair.And because family's car purchase proportion is increasingly high, and the car owner is more and more stronger to Motor Maintenance consciousness, domestic automobile detects, the demand of maintenance facility is also increasing.
But at present vapour is protected the technological domestic of equipment and is also lagged far behind the international competition adversary, and mainly is the foreign imitation technology, protects one of the major product four-wheel position finder of equipment as vapour, the huge market demand, and product technology difficulty height, added value is big.Along with pay attention to day by day and the management regulation of country to traffic safety, the market demand of four-wheel position finder equipment will expand rapidly under the guiding of national policy.
The detection mode of common in the market four-wheel position finder mainly contains: laser, PSD, CCD and 3D.Its characteristics are distinguished as follows:
One, laser:
Laser is a kind of new type light source, and it is that light source applications as measuring system is in four-wheel position finder, because laser all is with vertical straight line output; Therefore determined that the measurement range of laser product Shu Du is narrower; Uncompensated and need the manual calculation thrust line, its measuring accuracy is low, and detection speed is slow.There is personal error in relation because of luminous point and scale, and laser is easy to receive external interference, and it is unsatisfactory in four-wheel position finder therefore to do light source applications with laser.
As everyone knows, laser has certain injury to human eyesight, so safety certifications such as UL, CE are difficult to pass through, American-European Japan eliminates already, just in the also local existence of China and part country in Southeast Asia.
Two, PSD:
PSD claims photoelectrical position sensor again.We know; Does not use nearly all foreign four-wheel location, and the machine that has only Korea S is in a large amount of uses, and its principle of work is: when a certain position of the sensitive surface of PSD exists under the situation of illumination; Its output current has respective change; Thereby can obtain the illumination position, it is a kind of simulation (the DC/AC conversion has loss of data) device.Though through using some special technique can avoid these problems to a certain extent, it can only be measured single luminous point and can not change from the principle limit.PSD can only use in industrial environment, and the temperature drift of PSD is serious and receive the influence of ambient light in other words.Temperature variation can make the zero-bit of its output change tens millivolts, and the influence of light makes system's value unstable, and these two are superimposed, and just make PSD lose measuring accuracy and stabilization of equipment performance, the killer that this point is PSD (indeterminacy, poor repeatability).
Three, CCD:
CCD is a kind of semiconductor digital element device (claiming the photoelectric coupling device again), and it is divided into two kinds of line array CCD and area array CCDs.It is the novel semi-conductor integrated optoelectronic device that grows up early 1970s; It is integrated thousands of independently photosensitive separately units on a silicon face, when illumination is mapped on the photosurface, receives the photosensitive unit of light with the gathered light electronics; Mode through displacement; With light quantity output, produce the information of optical position and light intensity, so CCD have characteristics such as measuring accuracy height (in 0.05 degree), no temperature coefficient, long service life.
Use CCD that good adaptive capacity to environment is arranged.Other all technology all have the restriction in the various uses, and such as can not using, can not have strong-electromagnetic field, temperature that too big variation or the like can not be arranged in the complicated place of light, and these all be the typical environment in the common workshop that repairs.Those can not open the door, can not window, morning pleasantly cool data measured with noon the sky thermal measurement just different, the nigh requirement of big motor can not be arranged, for the four-wheel location, be to have a few too really.Therefore the four-wheel position finder of American-European countries's production all adopts the CCD technology, and like battlebus, Pepsi despot, god of war etc., this also is enough to explain the advantage of CCD product.
Four, 3D:
The 3D metering system is to adopt image recognition technology, is contained in the image information on the wheel reflector with the collection of CCD digital camera, and to measure the relative accuracy of wheel, the artificial wheel that promotes moves forward and backward, and by CCD camera collection information, obtains its coordinate and angle.This is a kind of quite advanced metering system, and is American-European at present commonly used.But he has strict mechanical precision requirement to lifting machine and rotation angle disk etc., and present domestic lifting machine and rotation angle disk can't match, and influence detects effect, moreover the demarcation mode is loaded down with trivial details, costs an arm and a leg, and detection speed is unhappy, and after-sales service is slower, is not domestic main flow.
Meanwhile, 3-D scanning be light harvesting, mechanical, electrical and computer technology in the new and high technology of one, be mainly used in object space profile and structure and color scanned, to obtain the volume coordinate of body surface.Its significance is can the steric information of material object be converted into calculates the digital signal that function is directly handled, for digitizing in kind provides quite conveniently means.
The 3-D scanning technology can realize non-cpntact measurement, and has fast, the advantage of high precision of speed.And the direct and various software interface of its measurement result ability, this makes it be popular in today that technical application such as CAD, CAM, CIMS are popularized day by day.In the manufacturing industry of developed country, spatial digitizer is as a kind of equipment of measurement in space fast, and is fast because of its measuring speed, precision is high, noncontact, advantage such as easy to use and obtain increasing application.With spatial digitizer to palm; Sample, model scan; Can obtain its three-dimensional size data; Direct and the CAD/CAM software interface of these data abilities can be adjusted data in CAD system, repairs, deliver on machining center or the rapid forming equipment again and make, and can shorten the product manufacturing cycle greatly.
World's Technical conditions of equipment, it is in the majority to use XY shaft mechanical coordinatometer to measure, and perhaps senior measures with dynamic laser, uses the three-dimensional coordinate arm in addition, and with the upper type complex steps, cost is very high, the current situation that the incompatibility automobile is popularized in a large number.
In view of this, those skilled in the art provide a kind of automobile chassis panel beating detection system and method thereof to the problems referred to above.
Summary of the invention
The invention provides a kind of automobile chassis panel beating detection system and method thereof; Overcome the difficulty of prior art; Through collecting data, set up intuitively that coordinate system compares, reduced the difficulty that automobile chassis is repaired; Improved remediation efficiency and repairing quality, the size that has guaranteed to repair the back automobile chassis is consistent when dispatching from the factory.
The present invention adopts following technical scheme:
The invention provides a kind of automobile chassis panel beating detection system, comprise reflecting target, at least one camera and Digital Photogrammetric System; The location contact point that said reflecting target comprises the lattice array mark and contacts with chassis surface; Said lattice array mark is arranged on the target surface of said reflecting target; The lattice array mark of the said reflecting target of said camera alignment; Said camera connects said Digital Photogrammetric System, and said Digital Photogrammetric System is set up the three-dimensional system of coordinate on chassis according to the view data of said camera.
Preferably, said camera is arranged on the front portion on chassis.
Preferably, also comprise display, connect said Digital Photogrammetric System.
The present invention also provides a kind of automobile chassis panel beating detection method, is used to detect the chassis after the impaired distortion, adopts above-mentioned automobile chassis panel beating detection system, may further comprise the steps:
(1) measure the chassis and set up three-dimensional system of coordinate through reflecting target and camera, getting in the chassis not, three of deformation place coordinate points are plane 0 benchmark;
(2) through reflecting target and camera point-to-point measurement chassis variant part, to carry out error ratio right with three-dimensional system of coordinate and plane 0 benchmark thereof;
(3) obtain the coordinate of deformation place and the size of error.
Preferably, said step (1) also comprises the automobile chassis through reflecting target and camera measurement standard before, sets up standard three-dimensional coordinate point data, and said step (2) comprises that also that chassis variant part and standard three-dimensional coordinate point data are carried out error ratio is right.
Owing to adopted above-mentioned technology; Compared with prior art; Automobile chassis panel beating detection system of the present invention and method thereof be through collecting data, sets up intuitively that coordinate system compares, and reduced the difficulty that automobile chassis is repaired; Improved remediation efficiency and repairing quality, the size that has guaranteed to repair the back automobile chassis is consistent when dispatching from the factory.
Further specify the present invention below in conjunction with accompanying drawing and embodiment.
Description of drawings
Fig. 1 is the synoptic diagram of the reflecting target in the automobile chassis panel beating detection system among the embodiment;
Fig. 2 is the side view of the reflecting target in the automobile chassis panel beating detection system among the embodiment;
Fig. 3 detects the synoptic diagram of the chassis size of just having dispatched from the factory for the automobile chassis panel beating detection system among the embodiment;
Fig. 4 is the synoptic diagram that the automobile chassis panel beating detection system among the embodiment detects current chassis size;
Fig. 5 is the process flow diagram of the automobile chassis panel beating detection method among the embodiment.
Reference numeral
1 is reflecting target;
2 is the lattice array mark;
3 are the location contact point;
4 is camera;
5 is the chassis;
6 is the chassis variant part;
7 is display;
8 is not variant part of chassis.
Embodiment
Introduce a kind of embodiment of the present invention through Fig. 1 to 5 below.
Shown in Fig. 1 to 4, a kind of automobile chassis panel beating detection system of the present invention comprises reflecting target 1, at least one camera 4 and Digital Photogrammetric System; The location contact point 3 that said reflecting target 1 comprises lattice array mark 2 and contacts with chassis surface; Said lattice array mark 2 is arranged on the target surface of said reflecting target 1; Said camera 4 is aimed at the lattice array mark 2 of said reflecting target 1; Said camera 4 connects said Digital Photogrammetric System, and said Digital Photogrammetric System is set up the three-dimensional system of coordinate on chassis according to the view data of said camera 4.Said camera 4 is arranged on the front portion on chassis.Also comprise display 7, connect said Digital Photogrammetric System.
Shown in Fig. 3 to 5, wherein 5 is the chassis, and 6 is the chassis variant part, and 8 is not variant part of chassis, and above-mentioned automobile chassis panel beating detection system is adopted on the chassis that is used to detect after the impaired distortion of the present invention, may further comprise the steps:
(1) measure the chassis and set up three-dimensional system of coordinate through reflecting target and camera, getting in the chassis not, three of deformation place coordinate points are plane 0 benchmark;
(2) through reflecting target and camera point-to-point measurement chassis variant part, to carry out error ratio right with three-dimensional system of coordinate and plane 0 benchmark thereof;
(3) obtain the coordinate of deformation place and the size of error.
Said step (1) also comprises the automobile chassis through reflecting target and camera measurement standard before, sets up standard three-dimensional coordinate point data, and said step (2) comprises that also that chassis variant part and standard three-dimensional coordinate point data are carried out error ratio is right.
Automobile chassis panel beating detection system of the present invention and method thereof are utilized camera and image target principle; Accident deformation place to the accident vehicle chassis carries out three-dimensional measurement; And set up the three-dimensional coordinate point system, and get in the chassis not that three of deformation place coordinate points are plane 0 benchmark, to carry out error ratio right with deformation place; And the automobile chassis three-dimensional coordinate point data of normative reference, cooperate the panel beating instrument that deformation place is precisely repaired.
The present invention adopts technology: dimensional visual measurement software and technology, and three-dimensional model software, kind of automobile chassis three-dimensional artificial software surplus in the of ten thousand, kind of automobile chassis database is gathered and foundation surplus in the of ten thousand, computer technology, vehicle body recovery technique.
To sum up can know; Owing to adopted above-mentioned technology; Automobile chassis panel beating detection system of the present invention and method thereof be through collecting data, sets up intuitively that coordinate system compares, and reduced the difficulty that automobile chassis is repaired; Improved remediation efficiency and repairing quality, the size that has guaranteed to repair the back automobile chassis is consistent when dispatching from the factory.
Above-described embodiment only is used to explain technological thought of the present invention and characteristics; Its purpose is to make those skilled in the art can understand content of the present invention and implements according to this; Can not only limit claim of the present invention with present embodiment; Be all equal variation or modifications of doing according to disclosed spirit, still drop in the claim of the present invention.
Claims (5)
1. an automobile chassis panel beating detection system is characterized in that: comprise reflecting target (1), at least one camera (4) and Digital Photogrammetric System;
The location contact point (3) that said reflecting target (1) comprises lattice array mark (2) and contacts with chassis surface; Said lattice array mark (2) is arranged on the target surface of said reflecting target (1); Said camera (4) is aimed at the lattice array mark (2) of said reflecting target (1); Said camera (4) connects said Digital Photogrammetric System, and said Digital Photogrammetric System is set up the three-dimensional system of coordinate on chassis according to the view data of said camera (4).
2. automobile chassis panel beating detection system as claimed in claim 1 is characterized in that: said camera (4) is arranged on the front portion on chassis.
3. automobile chassis panel beating detection system as claimed in claim 1 is characterized in that: also comprise display (7), connect said Digital Photogrammetric System.
4. automobile chassis panel beating detection method is used to detect the chassis after the impaired distortion, adopts automobile chassis panel beating detection system as claimed in claim 1, it is characterized in that, may further comprise the steps:
(1) measure the chassis and set up three-dimensional system of coordinate through reflecting target and camera, getting in the chassis not, three of deformation place coordinate points are plane 0 benchmark;
(2) through reflecting target and camera point-to-point measurement chassis variant part, to carry out error ratio right with three-dimensional system of coordinate and plane 0 benchmark thereof;
(3) obtain the coordinate of deformation place and the size of error.
5. automobile chassis panel beating detection method as claimed in claim 4; It is characterized in that: said step (1) also comprises the automobile chassis through reflecting target and camera measurement standard before; Set up standard three-dimensional coordinate point data, said step (2) comprises that also that chassis variant part and standard three-dimensional coordinate point data are carried out error ratio is right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104340530A CN102589458A (en) | 2011-12-22 | 2011-12-22 | Automobile chassis metal plate detecting system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104340530A CN102589458A (en) | 2011-12-22 | 2011-12-22 | Automobile chassis metal plate detecting system and method |
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| CN102589458A true CN102589458A (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011104340530A Pending CN102589458A (en) | 2011-12-22 | 2011-12-22 | Automobile chassis metal plate detecting system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016107478A1 (en) * | 2014-12-30 | 2016-07-07 | 清华大学 | Vehicle chassis inspection method and system |
| CN110285756A (en) * | 2019-07-15 | 2019-09-27 | 烟台恩科智能装备有限公司 | Photo-electric automobile chassis measuring instrument |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1163952A (en) * | 1997-08-21 | 1999-03-05 | Nippon Steel Corp | Three-dimensional shape measuring target and method for measuring inclination of collimation face |
| CN101561251A (en) * | 2009-04-03 | 2009-10-21 | 四川大学 | Phase target-based optical three-coordinate measuring method |
| CN201983935U (en) * | 2010-12-21 | 2011-09-21 | 上海一成汽车检测设备科技有限公司 | Pillar four-wheel positioning instrument |
-
2011
- 2011-12-22 CN CN2011104340530A patent/CN102589458A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1163952A (en) * | 1997-08-21 | 1999-03-05 | Nippon Steel Corp | Three-dimensional shape measuring target and method for measuring inclination of collimation face |
| CN101561251A (en) * | 2009-04-03 | 2009-10-21 | 四川大学 | Phase target-based optical three-coordinate measuring method |
| CN201983935U (en) * | 2010-12-21 | 2011-09-21 | 上海一成汽车检测设备科技有限公司 | Pillar four-wheel positioning instrument |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016107478A1 (en) * | 2014-12-30 | 2016-07-07 | 清华大学 | Vehicle chassis inspection method and system |
| CN110285756A (en) * | 2019-07-15 | 2019-09-27 | 烟台恩科智能装备有限公司 | Photo-electric automobile chassis measuring instrument |
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Address after: 201821, 2399, Xin Xin Bei Road, Shanghai, Jiading District Applicant after: Shanghai Yicheng Auto-Inspection Device Science & Technology Co., Ltd. Address before: 201821, 2399, Xin Xin Bei Road, Shanghai, Jiading District Applicant before: Shanghai Yicheng Auto Inspection Device Science & Technology Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: SHANGHAI YICHENG AUTO-INSPECTION DEVICE SCIENCE + TECHNOLOGY CO., LTD. TO: SHANGHAI YICHENG AUTO-INSPECTION DEVICE SCIENCE + TECHNOLOGY CO., LTD. |
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Owner name: SHANGHAI YECENG SCIENCE + TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHANGHAI YICHENG AUTO-INSPECTION DEVICE SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20150311 |
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Effective date of registration: 20150311 Address after: 201821, Jiading District, Shanghai Xin Sheng North Road, No. 3, 2399, 2, A District Applicant after: One one-tenth, Shanghai auto technology company limited Address before: 201821, 2399, Xin Xin Bei Road, Shanghai, Jiading District Applicant before: Shanghai Yicheng Auto-Inspection Device Science & Technology Co., Ltd. |
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Application publication date: 20120718 |