Adaptive geartooth sensor with dual peak detectors and true...

Details Adaptive geartooth sensor with dual peak detectors and true... Adaptive geartooth sensor with dual peak detectors and true...

2005-11-22

2005-11-22

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

Reexamination Certificate

active

06967477

ABSTRACT:
Methods and systems for detecting a rotating target are disclosed herein, wherein a biasing magnet is associated with a rotating target in association with a dual peak detector. The rotating target generally comprises a plurality of teeth and at least one slot formed between at least one tooth of the rotating target. In general, the biasing magnet and the rotating target generate a magnetic signal having positive and negative peaks thereof. The dual peak detector includes a tooth detector and a slot detector, such that the dual peak detector detects a minimum and maximum peak of the magnetic signal generated by the biasing magnet and the rotating target. Additionally, a clamping circuit can be associated with the dual peak detector, wherein the clamping circuit can provide a true power on (TPO) functionality.

REFERENCES:
patent: 5469054 (1995-11-01), Bicking
patent: 5694040 (1997-12-01), Plagens
patent: 5698777 (1997-12-01), Ramseyer et al.
patent: 6073713 (2000-06-01), Brandenburg et al.
patent: 6597205 (2003-07-01), Powell et al.
patent: 6727689 (2004-04-01), Furlong et al.
patent: 6759843 (2004-07-01), Furlong
patent: 2004/0130315 (2004-07-01), Lamb et al.

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