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Proceedings Paper

Vision system for dial gage torque wrench calibration
Author(s): Neelam Aggarwal; Theodore D. Doiron; Paramjeet S. Sanghera
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Paper Abstract

In this paper, we present the development of a fast and robust vision system which, in conjunction with the Dial Gage Calibration system developed by AKO Inc., will be used by the U.S. Army in calibrating dial gage torque wrenches. The vision system detects the change in the angular position of the dial pointer in a dial gage. The angular change is proportional to the applied torque. The input to the system is a sequence of images of the torque wrench dial gage taken at different dial pointer positions. The system then reports the angular difference between the different positions. The primary components of this vision system include modules for image acquisition, linear feature extraction and angle measurements. For each of these modules, several techniques were evaluated and the most applicable one was selected. This system has numerous other applications like vision systems to read and calibrate analog instruments.

Paper Details

Date Published: 29 November 1993
PDF: 9 pages
Proc. SPIE 2063, Vision, Sensors, and Control for Automated Manufacturing Systems, (29 November 1993); doi: 10.1117/12.164955
Show Author Affiliations
Neelam Aggarwal, The American Univ. (United States)
Theodore D. Doiron, National Institute of Standards and Technology (United States)
Paramjeet S. Sanghera, The American Univ. (United States)


Published in SPIE Proceedings Vol. 2063:
Vision, Sensors, and Control for Automated Manufacturing Systems
Scott S. Breidenthal; Alan A. Desrochers, Editor(s)

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