Noncontact optical sensor for inside-diameter measurements

Xiangjun Wang; Xinyu Kou

doi:10.1117/12.318403

10 August 1998 Noncontact optical sensor for inside-diameter measurements

Xiangjun Wang, Xinyu Kou

Proceedings Volume 3558, Automated Optical Inspection for Industry: Theory, Technology, and Applications II; (1998) https://doi.org/10.1117/12.318403
Event: Photonics China '98, 1998, Beijing, China

Abstract

This paper presents a new sensor method for achieving automatic non-contact fast inspections and measurements of the inside diameters or sizes of cylindrical parts with serial kinds of material in industrial environments. The method is based on optic surface reflection principle. The 2D geometric optic gouge is constructed in inside of cylinder in terms of laser diode and line scanning charge coupled device. The method has the advantage of simple and fast operation, long live for use, easy data process and error correction. The paper outlines in detail the principle of the 2D geometric optic sensor, the relation among reflection angle, position of light point on LCCD and measuring range. Some algorithms are introduced in the paper too. FInally, the actual experiment results are given.

Citation Download Citation

Xiangjun Wang and Xinyu Kou "Noncontact optical sensor for inside-diameter measurements", Proc. SPIE 3558, Automated Optical Inspection for Industry: Theory, Technology, and Applications II, (10 August 1998); https://doi.org/10.1117/12.318403

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