Automobile appearance detection structured light calibration system based on point to coordinate axis distance constraint

A technology of distance constraint and detection structure, which is applied in the direction of measuring device, optical device, instrument, etc., to achieve the effect of low production cost, large output and less machining process

Inactive Publication Date: 2015-02-25
JILIN UNIV
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Problems solved by technology

[0003] Aiming at the problem that the existing calibration method cannot directly obtain the laser plane equation in the world coordinate system, the present invention provides a method that can directly obtain the light plane position equation in the world coordinate system, has a simple structure, high calibration accuracy, small cumulative error, and functional Complete, easy-to-operate, easy-to-install, versatile, low-cost, and reliable performance-based automotive shape detection structured light calibration system that meets the requirements of the automotive inspection industry for visual inspection of vehicle shape

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  • Automobile appearance detection structured light calibration system based on point to coordinate axis distance constraint

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0015] refer to Figure 1 to Figure 2 , the structured light calibration system for vehicle shape detection based on distance constraints from points to coordinate axes includes a three-dimensional calibration board 1 and a T-shaped calibration board 2 .

[0016] The three-dimensional calibration plate 1 is formed by three rectangular steel plates welded perpendicular to each other, and a checkerboard pattern is pasted on the inner surface of the three-dimensional calibration plate 1 .

[0017] The T-shaped calibration plate 2 is made of two rectangular standard steel plates. The bottom end of the long rectangular steel plate at the lower part of the T-shaped calibration plate 2 is processed into a wedge shape, and the top is welded vertically to the middle of the upper rectangular steel plate, and a checkerboard is pasted on the top surface of the upper rectangular st...

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Abstract

The invention discloses an automobile appearance detection structured light calibration system based on point to coordinate axis distance constraint and aims at solving the problem that a laser plane equation under a world coordinate system cannot be directly acquired through currently-existing calibration methods. The automobile appearance detection structured light calibration system is mainly composed of a three-dimensional calibration plate (1) and a T-shaped calibration plate (2). The automobile appearance detection structured light calibration system is simple in structure, high in detection accuracy, small in accumulative error, complete in function, simple and convenient to operate, easy to mount, high in universality, low in cost and reliable in performance, and can meet visual detection requirements on automobile bodies in automobile detection industry.

Description

technical field [0001] The invention relates to a calibration device for detection equipment in the field of the automobile industry, more specifically, it relates to a cursor calibration system for vehicle shape detection structures based on distance constraints from points to coordinate axes. Background technique [0002] In order to ensure the safe driving of the car, it is one of the main inspection items in the field of automobile inspection to detect the overloading and size modification of the automobile reasonably and quickly, and to carry out the visual measurement of various geometric angles of the automobile. At present, the measurement of vehicle size and angle is mainly based on manual meter ruler measurement, which has low efficiency, poor accuracy and high labor intensity for staff. The use of machine vision measurement technology for non-contact detection of automotive geometric parameters is expected to solve the above technical bottlenecks due to its charac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01B11/26
Inventor 徐观郝照冰苏建张立斌潘洪达陈熔刘玉梅戴建国林慧英李晓韬刘换平张馨元卢雪孙丽娜
Owner JILIN UNIV
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