REVERSE DETECTION FOR ROTATING MACHINERY

WIPO Patent Application WO/2019/210459

A1

A rotation sensing system and methods for using the same are provided. The system can include a single proximity sensor (114) in communication with a controller (116). The proximity sensor (114) can include including a sensor head (120) having a generally planar sensing face (120f) and a sensing element (122) housed within the sensor head (120). The sensing element (122) can be configured to generate a magnetic field (124) in response to receipt of a driving current. The sensor (114) can be further configured to output a signal (302, 402, 608) in response to a predetermined feature of a target (104) rotating through the generated magnetic field (124) and the signal (302, 402, 608) can include a pulse (306, 406, 612) having first and second pulse portions occurring before and after a non-zero peak amplitude. The controller (116) can be configured to receive the signal (302, 402, 608), detect an asymmetry between the first and second portions of the pulse, and determine a rotation direction of the target based upon the detected asymmetry.

JP2004361230	BEARING ARRANGEMENT FITTED WITH ROTATIONAL SPEED DETECTION DEVICE
JP2004212351	MAGNETIC ENCODER AND BEARING UNIT WITH THE MAGNETIC ENCODER
WO/1989/012925	TACHO GENERATOR

WANG JIAN (CN)
JIANG JIANJUN (CN)

PCT/CN2018/085298

November 07, 2019

May 02, 2018

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BENTLY NEVADA LLC (US)
WANG JIAN (CN)

G01P3/487

CN201608680U	2010-10-13
CN1990191A	2007-07-04
JP2018059810A	2018-04-12
JP5158867B2	2013-03-06

CHINA PATENT AGENT (H.K.) LTD. (CN)

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