Degree Name

Master of Engineering (Hons.)


Department of Electrical and Computer Engineering


This thesis describes the development and evaluation of an experimental non-contact laser distance measuring device. The experimental gauge was based on the principle of triangulation, the high precision being derived from the combination of a stable method of generating converging beams and an accurate method of detecting their position using digital image processing. The experimental gauge was constructed and a 99% confidence interval for the error in ranging of 2.3)am was achieved for a gauge with a standoff of 60mm and a depth of field of greater then 20mm. The measurement of thickness of paint coating in a continuous process is examined as a potential application for this gauge.



Unless otherwise indicated, the views expressed in this thesis are those of the author and do not necessarily represent the views of the University of Wollongong.