Single diaphragm transducer with multiple sensing elements

Details Single diaphragm transducer with multiple sensing elements Single diaphragm transducer with multiple sensing elements

1992-06-29

1993-02-09

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

73708, 73721, 338 4, 338 42, G01L 708, G01L 906

Patent

active

051845156

ABSTRACT:
A transducer having a plurality of sensing elements disposed in a single diaphragm wherein each of the sensing elements is spaced from every other of the sensing elements a predetermined distance so as to control interference among the sensing elements. Each of the sensing elements preferably comprises a plurality of piezoresistors each of which are coupled in a Wheatstone bridge configuration. This transducer achieves sensitive, accurate, high spatial resolution measurements of non-uniform pressures.

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C. S. Weaver Interim Report to the National Heart and Lung Institute, Grant No. HL 17604-01A1, entitled, "Wearable Blood Pressure and ECG Recording System", dated 1976.

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