Rotation detecting sensor

Details Rotation detecting sensor Rotation detecting sensor

2006-05-16

2006-05-16

Ledynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

Reexamination Certificate

active

07046000

ABSTRACT:
Disclosed is a rotation detecting sensor suitable for use under a vibration-abundant condition as e.g. a sensor disposed in an automobile body for detecting rotation of an engine or ABS. The sensor includes a detecting element for detecting rotation of a rotary body as a change in a magnetic flux and outputting a signal and an integrated circuit for processing the amplified signal into a pulse corresponding to the detected rotation of the rotary body. The signal processing includes an initialization such as a gain adjustment for obtaining an appropriate gain for use in the subsequent process of conversion of the amplified signal to the pulse. According to this invention, a re-initialization is effected to obtain a new initial value such as a new gain if the previously effected initialization is determined inappropriate.

REFERENCES:
patent: 4884227 (1989-11-01), Watanabe
patent: 6636033 (2003-10-01), Draxelmayr
patent: 2000-205259 (2000-07-01), None

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