Pressure sensor with expanding member

Details Pressure sensor with expanding member Pressure sensor with expanding member

2006-02-13

2008-09-02

Allen, Andre J (Department: 2855)

Measuring and testing

Fluid pressure gauge

Electrical

C257S415000

Reexamination Certificate

active

07418870

ABSTRACT:
Systems and methodologies that provide for multi-parameter sensing via micro fabricated sensing structures operatively connected to oscillators, each micro-fabricated sensing structure in part defines a frequency of a respective associated oscillator. Output from such oscillators can be combined together, and then AC coupled with an incoming DC voltage that feeds the oscillators. The wiring arrangement includes two conducting paths/wires that carry a direct current to the oscillators as well as outputting the combined signal to external measurement devices. In addition, arrangements for pressure sensors are provided that mitigate errors from temperature variations and the induced stress/strains.

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