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Machine Fluid Sensor

Research output: Patent

Published
  • L Matsiev (Inventor)
  • James Bennett (Inventor)
  • Daniel Pinkas (Inventor)
  • Mikhail Spitkovsky (Inventor)
  • Oleg Kolosov (Inventor)
  • Shenheng Guan (Inventor)
  • M Uhrich (Inventor)
  • Cameron Dales (Inventor)
  • John Varni (Inventor)
  • Blake Walker (Inventor)
  • Vladimir Gammer (Inventor)
  • Dave Padovitz (Inventor)
  • Eric Low (Inventor)
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Patent numberUS 2007/0272209 A1
IPCF02D 45/00; GOIN 29/02
<mark>Original language</mark>English

Abstract

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 eontact 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 oi!.