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Mechanical Distortion Coefficient Measuring Instrument for Automobile Shape Measuring System

A technology of shape measurement and distortion coefficient, applied in the direction of measuring devices, instruments, optical devices, etc., can solve the problems of large measurement errors, etc., and achieve the effect of fewer machining processes, low production costs, and large output

Inactive Publication Date: 2018-01-05
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the camera calibration of the automobile shape measurement system, the existence of distortion will lead to large measurement errors

Method used

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  • Mechanical Distortion Coefficient Measuring Instrument for Automobile Shape Measuring System
  • Mechanical Distortion Coefficient Measuring Instrument for Automobile Shape Measuring System
  • Mechanical Distortion Coefficient Measuring Instrument for Automobile Shape Measuring System

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0018] refer to Figure 1 to Figure 4 , The mechanical distortion coefficient measuring instrument of the automobile shape measuring system includes a square frame 1, a steel wire 2, a sleeve 3 and an adjusting screw 4.

[0019] Square frame 1 is a rectangular frame welded by square steel. A threaded hole is processed in the middle of the inner surface of the four sides of the rectangular frame. The sleeve 3 is a cylindrical steel part. A circular through hole is machined radially at the bottom.

[0020] The adjustment screw 4 is made by welding the standard hexagonal bolt and the trapezoidal table. The diameter of the bottom surface of the small diameter of the trapezoidal table is the same as the diameter of the bolt. The length of the short side of the trapezoidal circular platform is 1 mm, and the standard hexagonal bolts of the four adjustment screws 4 pass thro...

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Abstract

The invention discloses an automobile morphology measurement system mechanical distortion coefficient measuring instrument, and aims at solving the problem that an automobile morphology visual detection system camera lens distortion coefficient cannot be easily and conveniently measured. The automobile morphology measurement system mechanical distortion coefficient measuring instrument is mainly composed of a square frame (1), steel wires (2), sleeves (3) and adjusting screws (4). Stretching of the steel wires is controlled by the adjusting screws (4) so that steel wire images in distortion images are enabled to be changed into original straight lines, and the distortion coefficient is obtained according to the number of rotation turns of the adjusting screws (4). The automobile morphology measurement system mechanical distortion coefficient measuring instrument 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 [0001] The invention relates to a verification device of a detection device in the field of automobile industry, more specifically, it relates to a mechanical distortion coefficient measuring instrument of an automobile shape measurement system. Background technique [0002] During the camera calibration of the automobile shape measurement system, the existence of distortion will lead to large measurement errors. In an ideal situation, the projection of any straight line in space on the image plane is still a straight line. Due to the existence of distortion, the actual straight line is imaged as a curve. By adjusting the mechanical distortion coefficient measuring instrument of the automobile shape measurement system, the steel wire in the image changes from a curve to a straight line, and the moving distance of the wire is recorded to calculate the lens distortion coefficient of the camera. is of great significance. Contents of the invention [0003] Ai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/24
CPCG01B11/2433
Inventor 徐观张馨元苏建戴建国单红梅陈熔张立斌刘玉梅潘洪达林慧英李晓韬郑安琪吴广为袁静
Owner JILIN UNIV
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