Coordinate measurement system of hidden parts based on optical target and rangefinder
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1.
School of Mechanical Science Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
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2.
School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China
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Corresponding author:
ZHAO Bin, zhaobin63@sohu.com
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Received Date:
2013-12-17
Accepted Date:
2014-02-25
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Abstract
In order to solve the coordinate measurement of hidden parts in large equipment, a laser probe based on optical target and rangefinder was proposed, which was combined with a total station instrument or a laser tracker to form a non-contact measurement system. During the measurement, the laser beam from the rangefinder was set to touch the measurement point and the distance between the rangefinder and the point was measured. And then, the optical target was aimed at by the total station instrument or the laser tracker. The spatial coordinates and the attitude angles of the laser probe were gotten. Finally, the spatial coordinates of the measured point was calculated by coordinate transformation. After theoretical analysis and experimental verification, the results show that the measurement system could expand the measurement range and achieve reliable and higher measurement precision.
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