Browse Prior Art Database

WIRE TENSION MEASUREMENT

IP.com Disclosure Number: IPCOM000026730D
Original Publication Date: 1993-Jun-30
Included in the Prior Art Database: 2004-Apr-06
Document File: 2 page(s) / 88K

Publishing Venue

Xerox Disclosure Journal

Abstract

A system for non-contact wire tension measurement is disclosed. It is often necessary to accurately measure the tension of suspended wire, for example, correct tension of corotron or scorotron wire is critical to proper electrical performance in electrophotographic printing and copying machines. Conventional contact methods of wire tension measurement often damage wire during measurement. The non-contact non-distructive wire tension measurement system relies on the relationship between the amount of compression undergone by a spring clip around which a wire is wrapped, and the tension of the wire.

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XEROX DISCLOSURE JOURNAL

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WIRE TENSION MEASUREMENT

Alvaro J. Chaves

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Proposed C 1 assi fi ca ti on

U.S. C1.355/273 Int. C1. G03g 15/14

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XEROX DISCLOSURE JOURNAL - Vol. 18, No. 3 May/June 1993 271

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WIRE TENSION MEASUREMENT (Cont'd)

A system for non-contact wire tension measurement is disclosed. It is often necessary to accurately measure the tension of suspended wire, for example, correct tension of corotron or scorotron wire is critical to proper electrical performance in electrophotographic printing and copying machines. Conventional contact methods of wire tension measurement often damage wire during measurement. The non-contact non-distructive wire tension measurement system relies on the relationship between the amount of compression undergone by a spring clip around which a wire is wrapped, and the tension of the wire.

A vision system consisting of an imaging processing unit, a color display monitor, and up to four video cameras, is used obtain and process component position image information. The vision system is programmed by, for example, an IBM compatible personal computer. An application and control program is activated upon power-up. An algorithm in the application program measures the distance 4 between adjacent edges of fixed frame 2 and a variable position spring clip 3. The smaller the distance 4 the tigher or greater the tension in wire 1. Acceptable tolerances for wire ten...