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21 October 2009 Design of on-line thickness measurement system based on CCD
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Abstract
This paper first describes the characteristics and the transmission characteristics of laser, and analyzes the theory that charge-coupled device (CCD) takes out the information charge from the charge packet by the scanning order to make the received images reproduce as the electrical signal form. On this basis, an on-line thickness measurement system is designed with a laser, a diaphragm, a filter, lenses, a charge coupling device (CCD), a splitting prism and other components. The system has several functions, such as dust-proof, shock-proof, anti-high and anti-low temperature, anti-electromagnetic interference, and so on; the measurement range is wide, the measurement accuracy is high and the dynamic tracking speed is fast, etc. With this system, the length, the width and the thickness of the steel plate can be measured real-time. At last this paper analyzes and discusses the system error with the real examples, and gives a few important conclusions.
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Tianze Li, Fang Wen, and Hengwei Lu "Design of on-line thickness measurement system based on CCD", Proc. SPIE 7515, Photonics and Optoelectronics Meetings (POEM) 2009: Industry Lasers and Applications, 751509 (21 October 2009); https://doi.org/10.1117/12.841116
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