Laser non-contacting displacement measurement

Huiming Tan

doi:10.1117/12.2294790

1 July 1990 Laser non-contacting displacement measurement

Huiming Tan

Proceedings Volume 1230, International Conference on Optoelectronic Science and Engineering '90; 123049 (1990) https://doi.org/10.1117/12.2294790
Event: The Marketplace for Industrial Lasers 1990, 1990, Chicago, IL, United States

Abstract

This paper discusses the principle of optical triangulation for non-contacting displacement measuring system which consists of a laser and a CCD. In the light of specific measuring installation, a kind of data acquisition and processing system based on single-chip microcomputer is projected and has been applied in the measurement. Hardware circuit, software design and the result in real application are given. In contacting displacement measurement, because of object deformation under stress at measuring point and the relative movement of gauge head with the surface of object, the improvement of measurement accuracy and speed are limited in real-time and on-line measurement. According to the optical triangulation, these drawbacks can be avoided by the non-contacting displacement measurement system which consists of a laser and a linear array CCD. If the data acquisition and processing system based on a single-chip microcomputer is adopted in the measurement, it will be simple for circuits, lower for cost and more suitable for real-time, on-line and high-speed measurement:

Citation Download Citation

Huiming Tan "Laser non-contacting displacement measurement", Proc. SPIE 1230, International Conference on Optoelectronic Science and Engineering '90, 123049 (1 July 1990); https://doi.org/10.1117/12.2294790

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