Digital piezoresistive pressure transducer

Details Digital piezoresistive pressure transducer Digital piezoresistive pressure transducer

1989-11-01

1990-09-25

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

73721, 338 4, 364558, G01L 708, G01L 906

Patent

active

049585207

ABSTRACT:
In a digital transducer, the output of a piezoelectric transducer bridge is coupled to the input of a comparator whose output switches between two predetermined states. A series of digital values is generated in response to the state of the comparator output and is fed back to balance the bridge. Stored digital values control the span of the transducer.

REFERENCES:
patent: 4163396 (1979-08-01), Waugh
patent: 4449409 (1984-05-01), Antonazzi
patent: 4667516 (1987-05-01), Schulz
patent: 4765188 (1988-08-01), Krechmery
patent: 4817022 (1989-03-01), Jornod et al.
"Linear and Conversion Applications Handbook", (PMI 1986), p. 88, FIG. 9.
"Linear and Conversation Applications Handbook", (PMI 1986), p. 106, FIG. 15.

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