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Proceedings Paper

Detecting laser-range-finding signals in surveying converter lining based on wavelet transform
Author(s): Hongsheng Li; Xiaofei Yang; Tielin Shi; Shuzi Yang
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Paper Abstract

The precision of the laser range finding subsystem has important influences on the performances of the whole measurement system applied to survey the steelmaking converter lining erosion state. In the system, the object of laser beams is some rough lighting surfaces in high temperature. the laser range finding signals to reach the microcomputer system would be submerged in intense disturb environments. Common laser range finding devices could not work normally. This paper presents a method based on the wavelet transform to test solving the problem. The idea of this method includes encoding the measuring signals, decomposing the encoded received signals of components in different frequency scales and time domains by the wavelet transform method, extracting the features of encoded signals according to queer points to confirm the arrival of signals, and accurately calculating out the measured distances. In addition, the method is also helpful to adopt some digital filter algorithms in time. It could make further in improvement on the precision.

Paper Details

Date Published: 10 August 1998
PDF: 6 pages
Proc. SPIE 3558, Automated Optical Inspection for Industry: Theory, Technology, and Applications II, (10 August 1998); doi: 10.1117/12.318437
Show Author Affiliations
Hongsheng Li, Wuhan Univ. of Technology (China)
Xiaofei Yang, Huazhong Univ. of Science and Technology (China)
Tielin Shi, Huazhong Univ. of Science and Technology (China)
Shuzi Yang, Huazhong Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 3558:
Automated Optical Inspection for Industry: Theory, Technology, and Applications II
Shenghua Ye, Editor(s)

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