Detecting laser-range-finding signals in surveying converter lining based on wavelet transform

Hongsheng Li; Xiaofei Yang; Tielin Shi; Shuzi Yang

doi:10.1117/12.318437

10 August 1998 Detecting laser-range-finding signals in surveying converter lining based on wavelet transform

Hongsheng Li, Xiaofei Yang, Tielin Shi, Shuzi Yang

Proceedings Volume 3558, Automated Optical Inspection for Industry: Theory, Technology, and Applications II; (1998) https://doi.org/10.1117/12.318437
Event: Photonics China '98, 1998, Beijing, China

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.

Citation Download Citation

Hongsheng Li, Xiaofei Yang, Tielin Shi, and Shuzi Yang "Detecting laser-range-finding signals in surveying converter lining based on wavelet transform", Proc. SPIE 3558, Automated Optical Inspection for Industry: Theory, Technology, and Applications II, (10 August 1998); https://doi.org/10.1117/12.318437

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