Compact digital pressure sensor circuitry

Details Compact digital pressure sensor circuitry Compact digital pressure sensor circuitry

1985-07-26

1988-08-09

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

73708, 331 65, 324 61R, G01R 2726, G01L 912

Patent

active

047630639

ABSTRACT:
A conditioning circuit for use with a pressure transducer is disclosed which provides a digitally readable electronic output signal indicative of capacitance sensed by the pressure transducer. The circuitry of the present invention utilizes an R-C charge/discharge circuit, thereby enabling the circuitry to be substantially more compact than previously utilized L-C circuits. The circuitry is usable with either pressure transducers having a single capacitance or those including a reference capacitance, and the circuitry provides a high resolution, high precision output.

REFERENCES:
patent: 3805149 (1974-04-01), Delapierre
patent: 3997801 (1976-12-01), Caron et al.
patent: 4392383 (1983-07-01), Baverlen et al.
patent: 4446447 (1984-05-01), McNamara
patent: 4598381 (1986-07-01), Cucci

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