Patent ID: 7154276
Filing Date: 2006-12-26
Classification: G01R

Abstract:
1. A method for determining cable resistance of wiring of an electrical system of a vehicle which includes a battery, a load, and a first cable connecting a first side of the battery to a first side of the load, and a second cable connecting a second side of the battery to a second side of the load, comprising: coupling a first Kelvin connector to the first side of the load of the vehicle, the first Kelvin connector having a first connector and a second connector; coupling a second Kelvin connector to the second side of the load of the vehicle, the second Kelvin connector having a third connector and a fourth connector; coupling a first voltage sensor connector to the first side of the battery of the vehicle; coupling a second voltage sensor connector to the second side of the battery of the vehicle; applying a forcing function between the first connector of the first Kelvin connector and the third connector of the second Kelvin connector; measuring a first parameter of the electrical system between the second connector of the first Kelvin connector and the second voltage sensor connector in response to the applied forcing function; measuring a second parameter of the electrical system between the first voltage sensor connector and the second voltage sensor connector in response to the applied forcing function; measuring a third parameter of the electrical system between the fourth connector of the second Kelvin connector and the second voltage sensor connector in response to the applied forcing function; measuring a fourth parameter of the electrical system between the first voltage sensor connector and the second voltage sensor connector in response to the applied forcing function; determining the cable resistance of the first cable as a function of the first parameter and the second parameter; and determining the cable resistance of the second cable as a function of the third parameter and the fourth parameter.