Speed sensing system
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United States of America Patent
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Jul 30, 2019
Grant Date -
Nov 17, 2016
app pub date -
Apr 29, 2016
filing date -
May 12, 2015
priority date (Note) -
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Abstract
A speed sensor system for measuring rotational speed includes a magnetic sensor and a cylindrical drum rotatable around the magnetic sensor. The cylindrical drum includes several axially extending members disposed circumferentially around a first edge of the cylindrical drum. The magnetic sensor is configured to generate an electrical output that indicates each passage of each of the axially extending members around the magnetic sensor as the cylindrical drum rotates around the magnetic sensor. The axially extending members are adapted to deflect radially outwards away from the magnetic sensor in response to an increased rotational speed of the cylindrical drum. The deflection of the axially extending members provides voltage regulation functionality that maintains voltage outputs of the magnetic sensor within a desired operational range.
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