CN201917461U - Small-size long-base-line-distance stereoscopic vision detecting system for automobile wheel alignment parameter - Google Patents
Small-size long-base-line-distance stereoscopic vision detecting system for automobile wheel alignment parameter Download PDFInfo
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- CN201917461U CN201917461U CN2011200144512U CN201120014451U CN201917461U CN 201917461 U CN201917461 U CN 201917461U CN 2011200144512 U CN2011200144512 U CN 2011200144512U CN 201120014451 U CN201120014451 U CN 201120014451U CN 201917461 U CN201917461 U CN 201917461U
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Abstract
The utility model discloses a small-size long-base-line-distance stereoscopic vision detecting system for an automobile wheel alignment parameter in the field of automobile industry, which aims to solve the problem that the machine vision detecting system for the automobile wheel alignment parameter can not realize small structural size and high-accuracy measurement. The system comprises a base (1), a right camera (2), a right front plane mirror assembly (3), a right rear plane mirror assembly (4), a top cover (5), a bulb (6), a left camera (7), a left rear plane mirror assembly (8), a left front plane mirror assembly (9), a mirror bracket base (10), a plane mirror (11), a mirror bracket top seat (12), an adjusting nut (13), a locating knob (14) and a stand column (15). The detecting system can accomplish non-contact automation detection on the automobile wheel alignment parameter.
Description
Technical field
The utility model relates to a kind of checkout equipment of auto industry field, and in particular, it relates to the automotive wheel positional parameter stereo vision detection system of the long baseline distance of a kind of small size.
Background technology
For guaranteeing the control stability of automobile, the installation between the wheel of automobile, steering knuckle and the axletree three has certain relative position, is called wheel alignment.Whether the automotive wheel parameter is accurate, and driving safety, control stability and the fuel economy of automobile had material impact.Wheel alignment meter is the important checkout equipment of check vehicle safety.The national at present only recoverable amount of wheel alignment meter just reaches more than 30000, and is increasing progressively with annual 30% speed.
Stereoscopic vision is measured wheel alignment parameter can realize non-contact detecting, and the distance in the measuring system between two video cameras is called the baseline distance, and the length of baseline distance has determined the measuring accuracy of vision system, and baseline is apart from long more, and accuracy of measurement system is high more.Existing wheel alignment parameter stereo vision detection system be because the system architecture size restrictions can't realize long baseline apart from measurement, thereby can cause because baseline makes system accuracy decline or physical dimension cross the ambassador system problem can't be installed etc. apart from too small.In sum, the automotive wheel positional parameter stereo vision detection system of the long baseline distance of small size is significant to the technical progress in automobile non-contact detecting field.
Summary of the invention
The utility model be at realizing that at present the applied for machines vision finishes the present situation of mini system physical dimension, high Precision Detection automotive wheel positional parameter, provide that a kind of volume is little, easy and simple to handle, dependable performance, highly versatile, be easy to install, low cost of manufacture, precision are high satisfies the automotive wheel positional parameter stereo vision detection system of the long baseline distance of small size that national metering, quality supervised department and manufacturer's non-contact detecting require.
Consult Fig. 1 to Figure 11, for solving the problems of the technologies described above, the utility model adopts following technical scheme to be achieved.The automotive wheel positional parameter stereo vision detection system of the long baseline distance of small size provided by the utility model includes base, right video camera, right front level crossing assembly, right back level crossing assembly, top cover, bulb, left video camera, left back level crossing assembly, left front level crossing assembly, mirror holder base, level crossing, mirror holder footstock, adjusts nut, positioning knob and column.
Base is placed on the smooth ground, and four through holes that four foot bolt that connect firmly on ground pass base end face from bottom to top use nut to fixedly connected with base respectively, and long limit, base trapezoid cross section one side is relative with wheel to be measured.
Identical right front level crossing assembly, right back level crossing assembly, left back level crossing assembly, the double-screw bolt of the column bottom of left front level crossing assembly passes base from top to bottom and grows eight through holes of limit one side and use nut to fixedly connected with base respectively in the trapezoid cross section of hollow two Room division surfaces up and down, the position of right front level crossing assembly and left back level crossing assembly is about vertical symmetrical plane symmetry of base, the position of right back level crossing assembly and left front level crossing assembly is about vertical symmetrical plane symmetry of base, two bolts pass from bottom to top base up and down two Room division surfaces at two through holes and identical right video camera of trapezoid cross section minor face one side, the threaded hole of video camera bottom, a left side is fixedly connected, the position of right video camera and left video camera is about vertical symmetrical plane symmetry of base, and the tapped through hole of two Room division surfaces is fixedlyed connected about the double-screw bolt of light bulb base and the base.
Four bolts pass four tapped through holes of top cover and base top surface from top to bottom successively, fixedly connected with whorl of base.
The screw thread of column below is fixedlyed connected with the tapped through hole screw thread of mirror holder base.Level crossing is a rectangular parallelepiped glass part, the V-type elongated slot line contact matching at the lower surface edge of level crossing and mirror holder base upper surface middle part.The U type elongated slot of mirror holder footstock bottom is inserted at the level crossing top, and have certain adjusting play between the lower surface of the U type elongated slot of mirror holder footstock and the upper surface of side and level crossing and the side, the manhole that column passes mirror holder footstock both sides is from bottom to top fixedlyed connected with the screw screw thread of adjusting nut.The fine thread through hole that positioning knob passes mirror holder footstock side respectively from outside to inside is connected with the fine thread through hole whorl of mirror holder footstock side, and positioning knob is threaded one section end and cooperates with the contacts side surfaces of level crossing.
Base described in the technical scheme is the hexahedron part of hollow two Room up and down that is divided into of a no end face and bottom surface, base and the cross section surface level parallel direction are isosceles trapezoid, the division surface of two Room of hollow up and down of base and side are the welding of standard steel plate, at two standard steel plate thin slices of the outside of the bottom surface of base isosceles trapezoid hypotenuse welding, end face isosceles trapezoid hypotenuse and minor face at base weld three standard steel plate thin slices to the inside, on the steel plate thin slice of welding outside the bottom surface of base, process four through holes about vertical symmetrical plane symmetry, on the division surface of two Room of hollow up and down of base about ten through holes of vertical symmetrical plane symmetry processing, and, on the steel plate thin slice that the inside top surface of base is welded, process four tapped through holes about vertical symmetrical plane symmetry at tapped through hole of its trapezoid cross section minor face one side processing.
Top cover described in the technical scheme is a trapezoidal part, adopts the cutting of standard steel plate to make, and four jiaos of top cover are processed with four through holes.
The rectangular parallelepiped part of mirror holder base described in the technical scheme for making after the standard steel plate cutting, in the both sides of mirror holder base about two tapped through holes of processing of its vertical symmetrical plane symmetry, the axis of tapped through hole is vertical with the lower surface of mirror holder base, and parallel plane processing V-type elongated slot that with two tapped through hole axis determine parallel with the bottom surface in the upper surface middle part of mirror holder base.
Column described in the technical scheme is the solid cylindrical part, is processed with screw thread at the two ends of column.
The rectangular parallelepiped part of mirror holder footstock described in the technical scheme for making after the standard steel plate cutting, at the upper surface of mirror holder footstock two manholes of processing about its vertical symmetrical plane symmetry, the axis of manhole is vertical with the upper surface of mirror holder footstock, in the side of mirror holder footstock about four fine thread through holes of processing of its vertical symmetrical plane and lateral symmetry plane symmetry, at U type elongated slot of lower surface middle part processing of mirror holder footstock.
Positioning knob described in the technical scheme is the cylindrical component that has ladder, and one section of minor diameter is processed with fine thread, and large diameter one section radially evenly is processed with U type groove.
The beneficial effects of the utility model are:
(1) structure of the utility model employing level crossing secondary reflection has strengthened the virtual baseline distance between two video cameras, has solved to improving measuring accuracy to strengthen system's baseline distance and then cause the excessive problem of system dimension.
(2) system is provided with lighting source, helps obtaining the second best in quality view data in testing process, has improved wheel positioning parameter measuring result's accuracy.
(3) position by the Machine Vision Detection wheel plane and then measure wheel alignment parameter, mini system physical dimension, high precision, non-contact measurement have been realized, in the time of wheel rim Plane Installation sensor, efficient and precision that wheel alignment parameter detects have been improved greatly when having reduced detection.
(4) critical part of the present utility model adopts the standard steel plate to process, and at first, standard steel plate output is big, and the machining operation is few, and production cost is lower; Secondly,, adopt the standard steel plate to have certain intensity as the important accessory of surveying instrument, can be indeformable in long-term the use, the precision that assurance is measured can satisfy the requirement of national standard to accuracy of detection; At last, critical part is the hollow-core construction that steel plate is formed, and greatly reduces the weight of checkout equipment, has improved equipment the dirigibility of adjusting operation is installed.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 be the long baseline distance of small size automotive wheel positional parameter stereo vision detection system see its axonometric projection graph in the other direction along Y-axis from facing the XOZ plane;
Fig. 2 be the automotive wheel positional parameter stereo vision detection system of the long baseline distance of small size do not comprise top cover 5 see its axonometric projection graph in the other direction along Y-axis from facing the XOZ plane;
Fig. 3 be the automotive wheel positional parameter stereo vision detection system of the long baseline distance of small size do not comprise top cover 5 see its perspective view in the other direction along the Z axle from facing XOY plane;
Fig. 4 be base 1 see its axonometric projection graph along the Y-axis positive dirction from facing the XOZ plane;
Fig. 5 be base 1 see its axonometric drawing of analysing and observe of crossing barycenter along the Y-axis positive dirction from facing the XOZ plane;
Fig. 6 be base 1 see its axonometric projection graph along Z axle positive dirction from facing XOY plane;
Fig. 7 be base 1 see its axonometric drawing of analysing and observe of crossing barycenter along the X-axis negative direction from facing the YOZ plane;
Fig. 8 be right front level crossing assembly 3 see its axonometric projection graph in the other direction along Y-axis from facing the XOZ plane;
Fig. 9 be right front level crossing assembly 3 see its dismounting figure in the other direction along Y-axis from facing the XOZ plane;
Figure 10 be right front level crossing assembly 3 see its cut-open view in the other direction along Y-axis from facing the XOZ plane;
Figure 11 is the using method of the automotive wheel positional parameter stereo vision detection system of the long baseline distance of small size;
Among the figure: 1. base, 2. right video camera, 3. right front level crossing assembly, 4. right back level crossing assembly, 5. top cover, 6. bulb, 7. left video camera, 8. left back level crossing assembly, 9. left front level crossing assembly, 10. mirror holder base, 11. level crossing, 12. mirror holder footstocks, 13. adjust nut, 14. positioning knob, 15. columns.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
The utility model provides that a kind of system architecture size is little, the automotive wheel positional parameter stereo vision detection system of simple installation, stable performance, testing result is accurate, precision the is high long baseline distance of small size.The utility model can be applicable to automobile production producer, automotive inspection equipment manufacturer, Automobile Detection center, vehicle maintenance and repair enterprise, colleges and universities, scientific research institutions and country's metering, quality supervised department.
The method of level crossing secondary reflection that adopts the utility model has strengthened the virtual baseline distance between two video cameras, has solved to improving measuring accuracy to strengthen system's baseline distance and then cause the excessive problem of system dimension.System is provided with lighting source, helps obtaining the second best in quality view data in testing process, has improved wheel positioning parameter measuring result's accuracy.Position and then measurement wheel alignment parameter by the Machine Vision Detection wheel plane, mini system physical dimension, high precision, non-contact measurement have been realized, in the time of wheel rim Plane Installation sensor, efficient and precision that wheel alignment parameter detects have been improved greatly when having reduced detection.Critical part of the present utility model adopts the standard steel plate to process, and at first, standard steel plate output is big, and the machining operation is few, and production cost is lower; Secondly,, adopt the standard steel plate to have certain intensity as the important accessory of surveying instrument, can be indeformable in long-term the use, the precision that assurance is measured can satisfy the requirement of national standard to accuracy of detection; At last, critical part is the hollow-core construction that steel plate is formed, and greatly reduces the weight of checkout equipment, has improved equipment the dirigibility of adjusting operation is installed.In sum, the utlity model has that volume is little, easy and simple to handle, dependable performance, highly versatile, be easy to installation, low cost of manufacture, precision advantages of higher, can satisfy needs the wheel parameter non-contact detecting.
Consult Fig. 1 to Figure 11, the automotive wheel positional parameter stereo vision detection system of the long baseline distance of small size includes base 1, right video camera 2, right front level crossing assembly 3, right back level crossing assembly 4, top cover 5, bulb 6, left video camera 7, left back level crossing assembly 8, left front level crossing assembly 9, mirror holder base 10, level crossing 11, mirror holder footstock 12, adjusts nut 13, positioning knob 14 and column 15.
Identical right front level crossing assembly 3, right back level crossing assembly 4, left back level crossing assembly 8, the double-screw bolt of column 15 bottoms of left front level crossing assembly 9 passes eight through holes of long limit, trapezoid cross section one side of base hollow two Room division surfaces about in the of 1 from top to bottom and also uses nut to fixedly connected with base 1 respectively, the position of right front level crossing assembly 3 and left back level crossing assembly 8 is about vertical symmetrical plane (crossing barycenter and the parallel plane plane of XOZ) symmetry of base 1, the position of right back level crossing assembly 4 and left front level crossing assembly 9 is about vertical symmetrical plane (crossing barycenter and the parallel plane plane of XOZ) symmetry of base 1, two bolts pass from bottom to top base about in the of 1 two Room division surfaces at two through holes and the right video camera 2 of identical DH-HW3102UC type of trapezoid cross section minor face one side, the threaded hole of video camera 7 bottoms, a left side is fixedly connected, the position of right video camera 2 and left video camera 7 is about vertical symmetrical plane (crossing barycenter and the parallel plane plane of XOZ) symmetry of base 1, and the double-screw bolt of bulb 6 bottoms is fixedlyed connected with the tapped through hole of base two Room division surfaces about in the of 1.
The rectangular parallelepiped part of mirror holder base 10 for making after the standard steel plate cutting, the manufacturing of employing standard steel plate can reduce machining amount, in the both sides of mirror holder base 10 about symmetrical two tapped through holes of processing of its vertical symmetrical plane (crossing barycenter and the parallel plane plane of YOZ), the axis of tapped through hole is vertical with the lower surface of mirror holder base 10, and parallel plane processing V-type elongated slot that with two tapped through hole axis determine parallel with the bottom surface in the upper surface middle part of mirror holder base 10.
The rectangular parallelepiped part of mirror holder footstock 12 for making after the standard steel plate cutting, the manufacturing of employing standard steel plate can reduce machining amount, at the upper surface of mirror holder footstock 12 about symmetrical two manholes of processing of its vertical symmetrical plane (crossing barycenter and the parallel plane plane of YOZ), the axis of manhole is vertical with the upper surface of mirror holder footstock 12, in the side of mirror holder footstock 12 about symmetrical four the fine thread through holes of processing of its vertical symmetrical plane (crossing barycenter and the parallel plane plane of YOZ) and lateral symmetry plane (barycenter and the parallel plane plane of XOZ excessively), U type elongated slot of lower surface middle part processing at mirror holder footstock 12, the U type elongated slot of mirror holder footstock 12 bottoms is inserted at level crossing 11 tops, and have certain adjusting play between the lower surface of the U type elongated slot of mirror holder footstock 12 and the upper surface of side and level crossing 11 and the side, the manhole that column 15 passes mirror holder footstock 12 both sides is from bottom to top fixedlyed connected with the screw screw thread of adjusting nut 13.
Positioning knob 14 is for having the cylindrical component of ladder, one section of minor diameter is processed with fine thread, be convenient to realize the precision adjustment of level crossing 11 position locations, large diameter one section radially evenly is processed with U type groove, friction force when being convenient to increase the rotation adjustment, the fine thread through hole that positioning knob 14 passes mirror holder footstock 12 sides respectively from outside to inside is connected with the fine thread through hole whorl of mirror holder footstock 12 sides, and positioning knob 14 is threaded one section end and cooperates with the contacts side surfaces of level crossing 11.
The using method of the automotive wheel positional parameter stereo vision detection system of the long baseline distance of small size:
The light of wheel to be measured passes through two secondary reflections of right front level crossing assembly 3, left back level crossing assembly 8 and left front level crossing assembly 9, right back level crossing assembly 4 respectively, in right video camera of having demarcated 2 and left video camera 7, generate two width of cloth images, actual range between two video cameras is that baseline is apart from being B1, virtual baseline through system after the flat mirror reflects is B2 apart from increasing, because B2 is much larger than B1, so system has increased the baseline distance of system under the constant prerequisite of physical dimension, effectively improved the accuracy of detection of wheel alignment parameter.The three-dimensional space position that two width of cloth images process feature extraction that obtains and Feature Points Matching can obtain wheel plane to be measured can be determined wheel positional parameters such as camber, toeing-in, reverse caster and Kingpin inclination by the three-dimensional space position of wheel plane to be measured.The automotive wheel positional parameter stereo vision detection system of the long baseline distance of small size can use separately, also can be placed to using or being used about automobile longitudinal plane and four of transverse plane of symmetry placements about the automobile longitudinal plane symmetry.
Claims (3)
1. the automotive wheel positional parameter stereo vision detection system of the long baseline distance of small size is characterized in that the automotive wheel positional parameter stereo vision detection system of the long baseline distance of described small size includes base (1), right video camera (2), right front level crossing assembly (3), right back level crossing assembly (4), top cover (5), bulb (6), left video camera (7), left back level crossing assembly (8), left front level crossing assembly (9), mirror holder base (10), level crossing (11), mirror holder footstock (12), adjusts nut (13), positioning knob (14) and column (15);
Base (1) is placed on the smooth ground, and four through holes that four foot bolt that connect firmly on ground pass base (1) bottom surface from bottom to top use nut to fixedly connected with base (1) respectively, and long limit, base (1) trapezoid cross section one side is relative with wheel to be measured;
Identical right front level crossing assembly (3), right back level crossing assembly (4), left back level crossing assembly (8), the double-screw bolt of column (15) bottom of left front level crossing assembly (9) passes base (1) from top to bottom and grows eight through holes of limit one side and use nut to fixedly connected with base (1) respectively in the trapezoid cross section of hollow two Room division surfaces up and down, the position of right front level crossing assembly (3) and left back level crossing assembly (8) is about vertical symmetrical plane symmetry of base (1), the position of right back level crossing assembly (4) and left front level crossing assembly (9) is about vertical symmetrical plane symmetry of base (1), two bolts pass from bottom to top base (1) up and down two Room division surfaces at two through holes and identical right video camera (2) of trapezoid cross section minor face one side, the threaded hole of left side video camera (7) bottom is fixedly connected, the position of right video camera (2) and left video camera (7) is about vertical symmetrical plane symmetry of base (1), and the double-screw bolt of bulb (6) bottom and base (1) tapped through hole of two Room division surfaces are up and down fixedlyed connected;
Four bolts pass four tapped through holes of top cover (5) and base (1) end face from top to bottom successively, fixedly connected with base (1) screw thread.
2. according to the automotive wheel positional parameter stereo vision detection system of the long baseline distance of the described small size of claim 1, it is characterized in that described base (1) is the hexahedron part of hollow two Room up and down that is divided into of a no end face and bottom surface, base (1) and the cross section surface level parallel direction are isosceles trapezoid, the division surface of two Room of hollow up and down of base (1) and side are the welding of standard steel plate, at two standard steel plate thin slices of the outside of the bottom surface of base (1) isosceles trapezoid hypotenuse welding, end face isosceles trapezoid hypotenuse and minor face at base (1) weld three standard steel plate thin slices to the inside, on the steel plate thin slice of welding outside the bottom surface of base (1), process four through holes about vertical symmetrical plane symmetry, on the division surface of two Room of hollow up and down of base (1) about ten through holes of vertical symmetrical plane symmetry processing, and, on the steel plate thin slice that the inside top surface of base (1) is welded, process four tapped through holes about vertical symmetrical plane symmetry at tapped through hole of its trapezoid cross section minor face one side processing.
3. according to the automotive wheel positional parameter stereo vision detection system of the long baseline distance of the described small size of claim 1, it is characterized in that described top cover (5) is a trapezoidal part, adopt the cutting of standard steel plate to make, four jiaos of top cover (5) are processed with four through holes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200144512U CN201917461U (en) | 2011-01-18 | 2011-01-18 | Small-size long-base-line-distance stereoscopic vision detecting system for automobile wheel alignment parameter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011200144512U CN201917461U (en) | 2011-01-18 | 2011-01-18 | Small-size long-base-line-distance stereoscopic vision detecting system for automobile wheel alignment parameter |
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| CN2011200144512U Expired - Lifetime CN201917461U (en) | 2011-01-18 | 2011-01-18 | Small-size long-base-line-distance stereoscopic vision detecting system for automobile wheel alignment parameter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175466A (en) * | 2011-01-18 | 2011-09-07 | 吉林大学 | Three-dimensional visual inspection system with small size and large base line distance for automobile wheel positioning parameter |
| CN102620944A (en) * | 2012-04-17 | 2012-08-01 | 吉林大学 | Six-post type three-dimensional visual detection system for automobile wheel alignment parameters |
| CN102679874A (en) * | 2012-05-30 | 2012-09-19 | 吉林大学 | Large-size commercial vehicle full-view stereoscopic vision measurement system with variable baseline distance |
| CN102679873A (en) * | 2012-05-29 | 2012-09-19 | 吉林大学 | Overall-vehicle-dimension full-view stereoscopic vision measurement system for commercial vehicles |
| CN113040909A (en) * | 2021-02-26 | 2021-06-29 | 张志宏 | Optical tracking system and method based on near-infrared three-eye stereo vision |
-
2011
- 2011-01-18 CN CN2011200144512U patent/CN201917461U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175466A (en) * | 2011-01-18 | 2011-09-07 | 吉林大学 | Three-dimensional visual inspection system with small size and large base line distance for automobile wheel positioning parameter |
| CN102175466B (en) * | 2011-01-18 | 2012-09-19 | 吉林大学 | Three-dimensional visual inspection system with small size and large base line distance for automobile wheel positioning parameter |
| CN102620944A (en) * | 2012-04-17 | 2012-08-01 | 吉林大学 | Six-post type three-dimensional visual detection system for automobile wheel alignment parameters |
| CN102679873A (en) * | 2012-05-29 | 2012-09-19 | 吉林大学 | Overall-vehicle-dimension full-view stereoscopic vision measurement system for commercial vehicles |
| CN102679874A (en) * | 2012-05-30 | 2012-09-19 | 吉林大学 | Large-size commercial vehicle full-view stereoscopic vision measurement system with variable baseline distance |
| CN102679874B (en) * | 2012-05-30 | 2014-07-09 | 吉林大学 | Large-size commercial vehicle full-view stereoscopic vision measurement system with variable baseline distance |
| CN113040909A (en) * | 2021-02-26 | 2021-06-29 | 张志宏 | Optical tracking system and method based on near-infrared three-eye stereo vision |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110803 Effective date of abandoning: 20120919 |