Document Type
Dissertation
Date of Award
Spring 5-31-1989
Degree Name
Doctor of Engineering Science in Mechanical Engineering
Department
Mechanical and Industrial Engineering
First Advisor
Harry Herman
Second Advisor
Bernard Koplik
Third Advisor
E. S. Geskin
Fourth Advisor
James L. Martin
Abstract
Dimensional measurement or check is a major part of the inspection and quality control in manufacturing. Most of the measurement applications are based on contact methods. While a number of non-contact methods are available, they are limited in accuracy, in flexibility, or in the range of application areas. An optical, close-range, non-contact distance measurement method has been developed for manufacturing and other applications. Based on a simple imaging principle, the method derives the distance information from the power response of a small axial image area, the irradiance of which is controlled by an active controlled illumination of the corresponding object area. The proposed method uses a low power laser beam for the illumination and can be used on both diffusive and reflective surfaces. The proposed sysem configuration and development is discussed with the requirements of the application environments. Based on the proposed system, the controlled illumination using a laser beam and the theoretical responses from diffusive and reflective surfaces are analyzed. The results are compared with the empirical data obtained from an experimental system.
Recommended Citation
Kim, Jaeho, "Close-range, noncontact distance measurement by controlled image irradiance" (1989). Dissertations. 1234.
https://digitalcommons.njit.edu/dissertations/1234
