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Proceedings Paper

A Laser Rangefinder For Hot Surface Profiling Measurements
Author(s): Kari Maatta; Juha Kostamovaara; Risto Myllyla
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Paper Abstract

This paper discusses the construction and capabilities of a laser rangefinder system for profiling measurements on hot surfaces (T < 1400°C), especially measurement of the thickness profile of the fire-brick sheathing of a converter. The rangefinder consists of an opto-mechanical measuring head, electronics unit and hand-held computer. Special attention is paid to maximizing the inherently low signal-to-noise ratio typical of measurements of this kind. In addition, an efficient time interval measurement principle is employed which enables rapid determination of a single 3 D point. The measured resolution of the system in a real operating environment is a few millimetres with a measuring time of less than 1 second per measurement point. The accuracy of the system is better than 1 cm in a measurement range of 6 - 17 metres.

Paper Details

Date Published: 16 January 1988
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Proc. SPIE 0952, Laser Technologies in Industry, (16 January 1988); doi: 10.1117/12.968857
Show Author Affiliations
Kari Maatta, University of Oulu (Finland)
Juha Kostamovaara, University of Oulu (Finland)
Risto Myllyla, Technical Research Centre of Finland (Finland)


Published in SPIE Proceedings Vol. 0952:
Laser Technologies in Industry

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