Method and apparatus for measuring a parameter of a vehicle electrical system
First Claim
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1. An apparatus for measuring an electrical parameter of an electrical path in a vehicle, comprising:
- a first Kelvin connector having a first load connection and a first sense connection configured to electrically couple to a first location of an electrical system of the vehicle;
a second Kelvin connector having a second load connection and a second sense connection configured to electrically couple to a second location of the electrical system of the vehicle;
a third connector configured to electrically couple to a third location of the electrical system of the vehicle;
a fourth connector configured to electrically couple to a fourth location of the electrical system of the vehicle;
a forcing function source configured to apply a forcing function signal between the first load connecting of the first Kelvin connector and the second load connecting of the second Kelvin connector, the forcing function signal comprising a time varying signal; and
a microprocessor which measures a first electrical dynamic parameter between the first Kelvin connector and the third connector, a second electrical dynamic parameter between the third connector and the fourth connector, and responsively provides an output representing electrical resistance between the third connector and the first Kelvin connector based upon the first and second dynamic parameters, wherein the first and second electrical dynamic parameters comprise voltages which are generated in response to the applied forcing function.
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Abstract
An apparatus for measuring electrical parameters for an electrical system measures a first and second parameters of the electrical system between connections to the electrical system. A processor determines a third electrical parameter of the electrical system as a function of the first parameter and the second parameter.
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Citations
26 Claims
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1. An apparatus for measuring an electrical parameter of an electrical path in a vehicle, comprising:
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a first Kelvin connector having a first load connection and a first sense connection configured to electrically couple to a first location of an electrical system of the vehicle; a second Kelvin connector having a second load connection and a second sense connection configured to electrically couple to a second location of the electrical system of the vehicle; a third connector configured to electrically couple to a third location of the electrical system of the vehicle; a fourth connector configured to electrically couple to a fourth location of the electrical system of the vehicle; a forcing function source configured to apply a forcing function signal between the first load connecting of the first Kelvin connector and the second load connecting of the second Kelvin connector, the forcing function signal comprising a time varying signal; and a microprocessor which measures a first electrical dynamic parameter between the first Kelvin connector and the third connector, a second electrical dynamic parameter between the third connector and the fourth connector, and responsively provides an output representing electrical resistance between the third connector and the first Kelvin connector based upon the first and second dynamic parameters, wherein the first and second electrical dynamic parameters comprise voltages which are generated in response to the applied forcing function. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for measuring an electrical parameter of an electrical path in a vehicle, comprising:
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electrically connecting a first Kelvin connector having a first load connection and a first sense connection to a first location of an electrical system of a vehicle; electrically connecting a second Kelvin connector having a second load connection and a second sense connection to a second location of an electrical system of a vehicle; electrically connecting a third connector to a third location of an electrical system of a vehicle; electrically connecting a fourth connector to a fourth location of an electrical system of a vehicle; applying a forcing function signal between the first load connection of the first Kelvin connector and the second connecting of the second Kelvin connector, the forcing function signal comprising a time varying signal; measuring a first electrical dynamic parameter between the first Kelvin connector and the third connector; measuring a second electrical dynamic parameter conductance between the third connector and the fourth connector, wherein the first and second electrical parameters comprise voltages which are generated in response to the applied forcing function; and calculating electrical resistance between the third connector and the first Kelvin connector based upon the measured first and second electrical dynamic parameters. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification