发明名称 |
Machine fluid sensor |
摘要 |
A sensor for sensing one or more properties of a vehicle fluid has a tuning fork resonator adapted to contact the fluid. The tuning fork resonator comprises two tines and is operable to oscillate so that the two tines move in opposite phase at a frequency of less than 1 MHz while contacting the fluid to generate a resonator response indicative of one or more properties of the fluid. In another aspect, a sensor includes a substrate and a flexural resonator on the substrate and adapted to contact the fluid. Circuitry for operation of the resonator is on the substrate. The resonator is adapted to receive an input signal and to oscillate while contacting the fluid to generate a resonator response indicative of one or more properties of the fluid. One suitable application for the invention is monitoring the condition of a vehicle engine oil.
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申请公布号 |
US7254990(B2) |
申请公布日期 |
2007.08.14 |
申请号 |
US20060433265 |
申请日期 |
2006.05.12 |
申请人 |
VISYX TECHNOLOGIES, INC. |
发明人 |
MATSIEV LEONID;BENNETT JAMES;PINKAS DANIEL M.;SPITKOVSKY MIKHAIL;KOLOSOV OLEG;GUAN SHENHENG;UHRICH MARK;DALES G. CAMERON;VARNI JOHN F.;WALKER BLAKE;GAMMER VLADIMIR;PADOWITZ DAVE;LOW ERIC |
分类号 |
G01N11/16;G01F23/296;G01N9/00;G01N29/036;G01N29/34 |
主分类号 |
G01N11/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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