ROTATION SENSOR
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United States of America Patent
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Issued Date -
Mar 2, 2017
app pub date -
Aug 25, 2016
filing date -
Aug 28, 2015
priority date (Note) -
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Abstract
A rotation sensor includes: a first detection element disposed to oppose an outer circumferential surface of a rotating body or one end surface in the shaft direction of the rotating body different from that on a shaft line of the rotating body, and detecting magnetic flux density; a storage portion storing the detection result of the first detection element; a second detection element disposed to be separated from the first detection element only by a predetermined distance, and detecting the magnetic flux density; a determination threshold value setting portion setting a determination threshold value based on a difference between maximum and minimum values in the detection result; and a signal output portion outputting a signal indicating the rotation of the rotating body when the detection result of the second detection element reaches the determination threshold value.
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