Single diaphragm transducer with multiple sensing elements

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

1989-06-22

1991-10-22

Orsino, Joseph A.

Measuring and testing

Fluid pressure gauge

Diaphragm

73716, 73721, 338 42, G01L 906

Patent

active

050584359

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.

REFERENCES:
patent: 3820401 (1974-06-01), Lewis
patent: 4207551 (1980-06-01), Kautzky
patent: 4528855 (1985-07-01), Singh
patent: 4550612 (1985-11-01), Yamada et al.
patent: 4665754 (1987-05-01), Glenn et al.
patent: 4702113 (1987-10-01), Wareham
patent: 4766655 (1988-08-01), Hickox
patent: 4777826 (1988-10-01), Rud, Jr. et al.
patent: 4809536 (1989-03-01), Nishiguchi
C. S. Weaver Interim Report to the National Heart and Lung Institute, Grant Number HL 17604-01A1 entitled, "Wearable Blood Pressure and ECG Recording System", dated 1976.

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