Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – For fault location
Patent
1996-12-27
1999-05-11
Do, Diep N.
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
For fault location
324503, 324532, 324534, 324538, G01R31/11
Patent
active
059031565
ABSTRACT:
A method for detecting a trouble location in wire harnesses can easily detect a position of trouble such as breakage, short circuit, or the like in the wire harnesses without bringing enlargement and complication into the wire harnesses. This method includes the steps of: setting each of electric wires (2) in a main line part (4) and a branch line part (5) of a wire harness (1) as a sensing line, the wires (2) being juxtaposed to each other in the respective parts (4, 5); transmitting a pulse wave in a measuring line of a trouble electric wire in the wire harness and the sensing line corresponding to the measuring line at their ends by a pulse generating unit (11); receiving a pulse wave reflected at a trouble point and measuring a difference in time between the transmitted pulse wave and the reflected pulse wave by a synchroscope (12); and computing a distance from a measuring point to the trouble point in accordance with the difference in time and a pulse propagation velocity by a computing unit (13).
REFERENCES:
patent: 4538103 (1985-08-01), Cappon
patent: 4859953 (1989-08-01), Young et al.
patent: 5066919 (1991-11-01), Klassen et al.
patent: 5206595 (1993-04-01), Wiggins et al.
patent: 5268644 (1993-12-01), Klassen et al.
Kido Motonori
Matsumaru Akio
Miyazaki Yoshiyuki
Bierman Jordan B.
Do Diep N.
Harness System Technologies Research Ltd.
Sumitomo Electric Industries Ltd.
Sumitomo Wiring Systems Ltd.
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