G - Physics – 01 – C
Patent
G - Physics
01
C
324/28, 33/97, 3
G01C 17/30 (2006.01) G01R 33/04 (2006.01)
Patent
CA 1266172
ABSTRACT OF THE DISCLOSURE Multiplexing a bandpass filter circuit to work with a flux-gate sensor output to minimize the amount of electronic circuitry required to work with the control system and to reduce the effect of gain on the circuit by emphasizing repeatability. The control circuit includes a gate switch connected at its input to a flux-gate for each magnetic component to be measured and a switching network, controlled by a microcomputer. The gate switches are commonly connected at their outputs to the serial connection of a bandpass filter, synchronous detector, integrator and summing amplifier. The microcomputer sends signals to the switching network such that the gate switches for each magnetic component are controlled, alternately conducting, thereby alternately allowing the output of the flux-gate to pass through to the serial connection of the bandpass filter, synchronous detector, integrator and summing amplifier whereby the effects of gain and component tolerances on the control circuit is minimized.
516815
Chrysler Motors Corporation
Macrae & Co.
LandOfFree
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