CN105423921A - Automobile spatial feature point position flexible detection system based on machine vision - Google Patents
Automobile spatial feature point position flexible detection system based on machine vision Download PDFInfo
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- CN105423921A CN105423921A CN201510987969.7A CN201510987969A CN105423921A CN 105423921 A CN105423921 A CN 105423921A CN 201510987969 A CN201510987969 A CN 201510987969A CN 105423921 A CN105423921 A CN 105423921A
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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
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
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- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses an automobile spatial feature point position flexible detection system based on machine vision, and aims at solving the problem of three-dimensional detection of automobile body feature points. The automobile spatial feature point position flexible detection system based on the machine vision is mainly composed of a feature point flexible detection frame (1), a target plate (2), a video camera (3), a video camera protective cover (4) and a video camera support (5). The system acquires target images via the video camera and realizes measurement of any spatial feature points of the whole automobile according to the relation of the vertex of the feature point flexible detection frame (1) and the feature position of the target plate (2) so that the automobile spatial feature point position flexible detection system based on the machine vision is simple in structure, high in detection precision, easy and convenient to operate, easy to install, relatively low in cost and reliable in performance.
Description
Technical field
The present invention relates to a kind of checkout equipment of checkout equipment of auto industry field, in particular, it relates to a kind of motor space characteristic point position flexible detection system based on machine vision.
Background technology
For ensureing the safety traffic of automobile, rationally detect overload and oversize and the size repacking of automobile fast, the measurement carrying out car body appearance and size is one of main test item of automobile detection field.At present, mainly rest on manual meter ruler to the measurement of automobile dimension and measure, efficiency is low, low precision, and intensity of workers is large.Unique point flexible detection device is adopted to detect body of a motor car unique point, by camera acquisition target image and according to the position relationship in unique point flexible detection device summit and target face and then realize car load appearance and size and measure, the method has fast, accurately and the feature such as high reliability, adopt motor space characteristic point position flexible detection system based on machine vision to the calibrating of automobile pattern size detecting system and significant to the technical progress of auto industry detection field.
Summary of the invention
The present invention is directed to the present situation that cannot realize car body unique point three-dimensional coordinate at present and detect, provide a kind ofly can steadily to scan, structure is simple, accuracy of detection is high, cumulative errors is little, function is complete, easy and simple to handle, be easy to installations, highly versatile, cost met automotive check industry that is lower, dependable performance carry out examining and determine the motor space characteristic point position flexible detection system based on machine vision of requirement to car body Shap feature detection system.
Consult Fig. 1 to Fig. 6, for solving the problems of the technologies described above, the present invention adopts following technical scheme to be achieved.Motor space characteristic point position flexible detection system based on machine vision provided by the present invention includes unique point flexible testing stand, target plate, video camera, camera protective cover and camera mount.
Camera mount is placed on the front of vehicle to be checked, four bolts are fixedly connected with ground through four manholes of camera mount large rectangle steel plate from top to bottom, the bottom of a studs is fixedly connected with the threaded hole screw thread processed in the middle part of the little rectangular sheet of camera mount, video camera is placed on the little rectangular sheet upper surface at camera mount top, threaded hole bottom video camera is fixedly connected with the top screw thread of studs, bolt is fixedly connected with nut thread with the manhole at the little rectangular sheet two ends of camera mount end face through two manholes of two pieces of little rectangular steel plates of camera protective cover from top to bottom, bolt is fixedly connected with nut thread with two manholes of the relative both side surface of target plate bending through two manholes on bending surface, U-shaped steel plate both sides of the flexible testing stand of unique point, in the middle part of the cored steel rounding conical point of the flexible testing stand of unique point and target plate, the outer surface of rectangle plane is coplanar.
Camera mount described in technical scheme is welded by two block plates and a square steel and makes, large rectangle steel plate corner, camera mount bottom surface symmetrical machining four manholes, end face center weld square steel of camera mount bottom surface large rectangle steel plate, one piece of little rectangular sheet is welded in the middle part of square steel end face, little rectangular sheet two ends symmetrical machining two manholes, process a threaded hole in the middle part of little rectangular sheet.
Camera protective cover top described in technical scheme is the xsect that bending is made is U-shaped steel plate, and two pieces of little rectangular steel plates are welded on U-shaped steel plate two bottom sides, and two pieces little rectangular steel plates centers process two manholes.
The flexible testing stand of unique point described in technical scheme is bored welding by round steel pipe, U-shaped steel plate and cored steel rounding and is made, be the xsect that a both sides bending is made in the middle part of the flexible testing stand of unique point be U-shaped steel plate, surface working two manholes of U-shaped steel plate both sides bending, the bending surface, both sides of U-shaped steel plate is welded to connect with two round steel pipes, welded top cored steel rounding cone of side round steel pipe.
Target plate described in technical scheme is the middle part that steel plate makes is the part of rectangle plane four Edge Bend, and the surface mount chessboard pattern paster of target plate, the relative both side surface of target plate bending processes two manholes.
The invention has the beneficial effects as follows:
(1) the present invention two-dimensional target is designed to the conial vertex of flexible detection device at grade, adopt conial vertex as the detector probe of inspected feature point, and utilize the some calibrating camera that target exists a large amount of known coordinate and rebuild the three-dimensional coordinate of camera coordinate system inferior pyramidal summit and inspected feature point, the restriction that flexible detection device is not moved, can move freely and detect the three-dimensional coordinate of vehicle body arbitrfary point, simple to operate, coupling is convenient.
(2) critical part of the present invention adopts standard steel section to process, and first, standard steel section output is large, and machining operation is few, and production cost is lower; Secondly, as the important accessory of surveying instrument, adopt standard steel section to have certain intensity, can be indeformable in Long-Time Service, ensure the precision measured, the requirement of national standard to measuring accuracy can be met.
Accompanying drawing explanation
Fig. 1 is the axonometric drawing of motor space characteristic point position flexible detection system A based on machine vision and vehicle B to be checked;
Fig. 2 is the axonometric drawing of the video camera 3 of motor space characteristic point position flexible detection system based on machine vision, camera protective cover 4, camera mount 5;
Fig. 3 is the shaft side figure of the flexible testing stand 1 of unique point, target plate 2 in the motor space characteristic point position flexible detection system based on machine vision;
Fig. 4 is the cut-open view of the flexible testing stand 1 of unique point, target plate 2 in the motor space characteristic point position flexible detection system based on machine vision;
Fig. 5 is the shaft side figure of camera protective cover 4 in the motor space characteristic point position flexible detection system based on machine vision;
Fig. 6 is the shaft side figure of camera mount 5 in the motor space characteristic point position flexible detection system based on machine vision;
In figure: A. based on the motor space characteristic point position flexible detection system of machine vision, B. vehicle to be checked, 1. unique point flexible testing stand, 2. target plate, 3. video camera, 4. camera protective cover, 5. camera mount.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Consult Fig. 1 to Fig. 6, the motor space characteristic point position flexible detection system based on machine vision includes the flexible testing stand 1 of unique point, target plate 2, video camera 3, camera protective cover 4 and camera mount 5.
Camera mount 5 is welded by two block plates and a square steel and makes, large rectangle steel plate corner, camera mount 5 bottom surface symmetrical machining four manholes, four bolts are fixedly connected with ground through four manholes of camera mount 5 large rectangle steel plate from top to bottom, end face center weld square steel of camera mount 5 bottom surface large rectangle steel plate, one piece of little rectangular sheet is welded in the middle part of square steel end face, little rectangular sheet two ends symmetrical machining two manholes, a threaded hole is processed in the middle part of little rectangular sheet, the bottom of a studs is fixedly connected with the threaded hole screw thread processed in the middle part of the little rectangular sheet of camera mount 5, camera mount 5 is placed on the front of vehicle B to be checked.
Video camera 3 is placed on the little rectangular sheet upper surface at camera mount 5 top, threaded hole bottom video camera 3 is fixedly connected with the top screw thread of studs, camera protective cover 4 top is the xsect that bending is made is U-shaped steel plate, two pieces of little rectangular steel plates are welded on U-shaped steel plate two bottom sides, two pieces little rectangular steel plates centers process two manholes, and bolt is fixedly connected with nut thread with the manhole at the little rectangular sheet two ends of camera mount 5 end face through two manholes of two pieces of little rectangular steel plates of camera protective cover 4 from top to bottom.
The flexible testing stand 1 of unique point is bored welding by round steel pipe, U-shaped steel plate and cored steel rounding and is made, be the xsect that a both sides bending is made in the middle part of the flexible testing stand 1 of unique point be U-shaped steel plate, surface working two manholes of U-shaped steel plate both sides bending, the bending surface, both sides of U-shaped steel plate is welded to connect with two round steel pipes, welded top cored steel rounding cone of side round steel pipe.
Target plate 2 for middle part that steel plate makes be the part of rectangle plane four Edge Bend, the surface mount chessboard pattern paster of target plate 2, the relative both side surface of target plate 2 bending processes two manholes, bolt is fixedly connected with nut thread with two manholes of the relative both side surface of target plate 2 bending through two manholes on bending surface, U-shaped steel plate both sides of the flexible testing stand 1 of unique point, and in the middle part of the cored steel rounding conical point of unique point flexibility testing stand 1 and target plate 2, the outer surface of rectangle plane is coplanar.
Using method based on the motor space characteristic point position flexible detection system of machine vision: camera mount 5 is horizontally fixed on ground, and fix video camera 3 and camera protective cover 4 at camera mount 5 end face.The flexible testing stand 1 of the hand-held unique point of operator, the cored steel rounding conical point of the flexible testing stand 1 of unique point point to vehicle B to be checked wait examine, target plate 2 need within the scope of camera field of view, by the image of the target plate 2 of camera acquisition each position, rebuild the relative position of target plate 2 and vehicle according to the calibration result of video camera, and then acquisition vehicle body is waited to examine the coordinate under camera coordinate system.
Claims (5)
1. the motor space characteristic point position flexible detection system based on machine vision, it is characterized in that, the described motor space characteristic point position flexible detection system based on machine vision is made up of with camera mount (5) the flexible testing stand (1) of unique point, target plate (2), video camera (3), camera protective cover (4);
Camera mount (5) is placed on the front of vehicle to be checked (B), four bolts are fixedly connected with ground through four manholes of camera mount (5) large rectangle steel plate from top to bottom, the bottom of a studs is fixedly connected with the threaded hole screw thread processed in the middle part of camera mount (5) little rectangular sheet, video camera (3) is placed on the little rectangular sheet upper surface at camera mount (5) top, the threaded hole of video camera (3) bottom is fixedly connected with the top screw thread of studs, bolt is fixedly connected with nut thread with the manhole at the little rectangular sheet two ends of camera mount (5) end face through two manholes of two pieces of little rectangular steel plates of camera protective cover (4) from top to bottom, bolt is fixedly connected with nut thread with two manholes of the relative both side surface of target plate (2) bending through two manholes on bending surface, U-shaped steel plate both sides of the flexible testing stand (1) of unique point, the outer surface of the cored steel rounding conical point of unique point flexibility testing stand (1) and target plate (2) middle part rectangle plane is coplanar.
2. according to the motor space characteristic point position flexible detection system based on machine vision according to claim 1, it is characterized in that described camera mount (5) is welded by two block plates and a square steel to make, large rectangle steel plate corner, camera mount (5) bottom surface symmetrical machining four manholes, end face center weld square steel of camera mount (5) bottom surface large rectangle steel plate, one piece of little rectangular sheet is welded in the middle part of square steel end face, little rectangular sheet two ends symmetrical machining two manholes, process a threaded hole in the middle part of little rectangular sheet.
3. according to the motor space characteristic point position flexible detection system based on machine vision according to claim 1, it is characterized in that described camera protective cover (4) top be the xsect that bending is made is U-shaped steel plate, two pieces of little rectangular steel plates are welded on U-shaped steel plate two bottom sides, and two pieces little rectangular steel plates centers process two manholes.
4. according to the motor space characteristic point position flexible detection system based on machine vision according to claim 1, it is characterized in that the flexible testing stand (1) of described unique point is bored welding by round steel pipe, U-shaped steel plate and cored steel rounding and made, flexible testing stand (1) middle part of unique point is the xsect that a both sides bending is made is U-shaped steel plate, surface working two manholes of U-shaped steel plate both sides bending, the bending surface, both sides of U-shaped steel plate is welded to connect with two round steel pipes, welded top cored steel rounding cone of side round steel pipe.
5. according to the motor space characteristic point position flexible detection system based on machine vision according to claim 1, it is characterized in that described target plate (2) for middle part that steel plate makes be the part of rectangle plane four Edge Bend, the surface mount chessboard pattern paster of target plate (2), the relative both side surface of target plate (2) bending processes two manholes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510987969.7A CN105423921B (en) | 2015-12-24 | 2015-12-24 | Motor space characteristic point position flexible detection system based on machine vision |
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| CN201510987969.7A CN105423921B (en) | 2015-12-24 | 2015-12-24 | Motor space characteristic point position flexible detection system based on machine vision |
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| CN105423921A true CN105423921A (en) | 2016-03-23 |
| CN105423921B CN105423921B (en) | 2018-03-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500667A (en) * | 2016-10-31 | 2017-03-15 | 吉林大学 | Body of a motor car pose vision measurement field |
| CN110375648A (en) * | 2019-08-05 | 2019-10-25 | 华南农业大学 | The spatial point three-dimensional coordinate measurement method that the single camera of gridiron pattern target auxiliary is realized |
| CN114623763A (en) * | 2022-03-04 | 2022-06-14 | 中国民用航空飞行学院 | Flexible stereoscopic vision measuring device for target space coordinates |
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| JP2005201824A (en) * | 2004-01-16 | 2005-07-28 | Fanuc Ltd | Measuring device |
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| CN114623763A (en) * | 2022-03-04 | 2022-06-14 | 中国民用航空飞行学院 | Flexible stereoscopic vision measuring device for target space coordinates |
| CN114623763B (en) * | 2022-03-04 | 2023-03-21 | 中国民用航空飞行学院 | Flexible stereoscopic vision measuring device for target space coordinates |
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| CN105423921B (en) | 2018-03-16 |
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