WORKPIECE AND METHOD AND SYSTEM FOR MONITORING WATER CONTENT OF LUBRICANT THEREOF, AND DETERMINATION METHOD AND APPARATUS

WIPO Patent Application WO/2018/133719

A1

Disclosed are a workpiece and a method for monitoring water content of a lubricant thereof, wherein the monitoring method comprises a water content sensing unit (10) being provided in the workpiece and exposed in a lubricant inside the workpiece, the water content sensing unit (10) and a radio frequency tag (20) being located in one and the same circuit (S1), the electrical property of the water content sensing unit (10) changing along with changes in the water content of the lubricant, and the electrical property comprising at least one of resistance, inductance and capacitance; determining a correlation between a frequency-related parameter of the radio frequency tag (20) and the water content in the lubricant (S2); acquiring the actual frequency of the radio frequency tag (20) (S3); and according to the correlation and the actual frequency, determining the actual water content of the lubricant (S4). The method for monitoring the water content of the lubricant of the workpiece can realise online monitoring of the water content of a lubricant inside a bearing.

JP5515111	Moisture detector
JPH0280943	APPARATUS FOR MEASURING MOISTURE OF FRAGMENTARY AGGREGATE

WEI LAI (CN)
MA ZIKUI (CN)
WEI JIANFEI (CN)
ZHAO ZHANGFAN (CN)
PAN ZHIHUI (CN)
LIU YONG (CN)

PCT/CN2018/072055

July 26, 2018

January 10, 2018

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SCHAEFFLER TECHNOLOGIES AG (DE)
WEI LAI (CN)
MA ZIKUI (CN)
WEI JIANFEI (CN)
ZHAO ZHANGFAN (CN)
PAN ZHIHUI (CN)
LIU YONG (CN)

G01N22/04

US20080317397A1	2008-12-25
US20100182023A1	2010-07-22
CN102866243A	2013-01-09
JP2014190857A	2014-10-06
JP2006119118A	2006-05-11
US20140028327A1	2014-01-30

UNITALEN ATTORNEYS AT LAW (CN)

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