Electricity: measuring and testing – Electrical speed measuring – Including speed-related frequency generator
Patent
1994-02-22
1995-09-12
Strecker, Gerard R.
Electricity: measuring and testing
Electrical speed measuring
Including speed-related frequency generator
324115, 324173, 327308, 327516, G01P 3488, G01P 3489, G01R 1508, H03L 500
Patent
active
054500087
ABSTRACT:
An adaptive loading circuit is provided for adaptively attenuating an alternating differential voltage that is produced by a magnetic sensor in response to the rotation of a wheel while maintaining noise immunity. The circuit includes an input for receiving an input differential voltage from the magnetic sensor via first and second input lines. A resistive divider network is included which has a resistive load serially connected to each of the first and second input lines and a plurality of adaptively selectable parallel resistive loads connected between the first and second input lines. Combinations of the parallel resistive loads are adaptively selected when the input differential voltage exceeds predetermined voltage thresholds so as to divide the input differential voltage into a selected portion thereof as an output differential voltage. In addition, the parallel resistive loads may be selectively switched out when the input differential voltage drops below a low voltage threshold. The output differential voltage is then processed so as to achieve rotational speed information about the wheel.
REFERENCES:
patent: 3801830 (1974-04-01), Boyer
patent: 4301445 (1981-11-01), Robinson
patent: 4575677 (1986-03-01), Dennis
patent: 4866298 (1989-09-01), Kniss et al.
patent: 4868498 (1989-09-01), Lusinchi et al.
patent: 4962470 (1990-10-01), Hansen
patent: 5029286 (1991-07-01), Kirschner
patent: 5101155 (1992-03-01), Oehler et al.
patent: 5144233 (1992-09-01), Christenson et al.
patent: 5293122 (1994-03-01), Cake et al.
patent: 5319305 (1994-06-01), Baba
David K. Long, "An Adaptive Sense Amplifier For Engine Control Applications", Paper No. 770435, Society of Automotive Engineers International Automotive Engineering Congress and Exposition, Cobo Hall, Detroit, Mich. Feb. 28-Mar. 4, 1977.
Good Brian K.
Keyse Mark R.
Delco Electronics Corp.
Funke Jimmy L.
Strecker Gerard R.
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