Wheel speed averaging circuit

Details Wheel speed averaging circuit Wheel speed averaging circuit

1998-02-12

2000-02-01

Assouad, Patrick

Data processing: measuring, calibrating, or testing

Measurement system

Speed

701 93, 701 70, B60T 866

Patent

active

060213825

ABSTRACT:
A wheel speed averaging circuit includes a first wheel speed sensor, a second wheel speed sensor, a first analog switch having a first input coupled to the first wheel speed sensor for receiving the first sensor signal, a second analog switch having a second input coupled to the second wheel speed sensor for receiving the second sensor signal, and a microprocessor controller. The microprocessor controller determines a first duration of a first single pulse of the first sensor signal while the first analog switch is enabled and the second analog switch is disabled, selectively enables the second analog switch while disabling the first analog switch after determining the first duration, and determines a second duration of a second single pulse of the second sensor signal while the second analog switch is enabled, so that the first and second single pulses from the first and second sensor signals are alternately measured. The rear average wheel speed signal is provided responsive to the first and second durations.

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