Method and apparatus for detecting an abnormal current in automo

Details Method and apparatus for detecting an abnormal current in automo Method and apparatus for detecting an abnormal current in automo

1997-03-14

1998-12-29

Regan, Maura K.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

324503, 324 66, G01R 2726

Patent

active

058545557

ABSTRACT:
A current flowing through the automotive battery and the battery voltage are measured by the battery current measuring means and the battery voltage measuring means. The battery is connected to a plurality of wiring harnesses which in turn connect to a plurality of loads. Data on normal resistance values between the battery and the wiring harnesses as produced by each of the loads being activated are stored and held in the load current data holding means. When the resistance value comparison means determines that the resistance value between the battery and the wiring harnesses calculated by the resistance value calculating means does not agree with the data of normal resistance values between the battery and the wiring harnesses held by the load resistance data holding means and produced by each of the loads being activated, it is decided that abnormal currents are flowing through the wiring harnesses.

REFERENCES:
patent: 3699438 (1972-10-01), Webb
patent: 4218745 (1980-08-01), Perkins
patent: 4884033 (1989-11-01), McConchie
patent: 4959792 (1990-09-01), Sullivan
patent: 5311138 (1994-05-01), Ott et al.
patent: 5530360 (1996-06-01), Kerchaert et al.
patent: 5623199 (1997-04-01), Taniguchi et al.
patent: 5629628 (1997-05-01), Hinds et al.

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