Constant-resistance signal conditioner for dynamic strain measur

Details Constant-resistance signal conditioner for dynamic strain measur Constant-resistance signal conditioner for dynamic strain measur

1991-09-05

1993-06-01

Myracle, Jerry W.

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Specified electrical sensor or system

324721, G01B 718

Patent

active

052149625

ABSTRACT:
A dynamic strain measurement circuit includes a constant resistance conditioner. The constant resistance conditioner compensates for changes in lead wire resistance due to temperature. The conditioner includes adjustable resistance connected between a voltage supply and the strain gage. A potential difference is detected in the circuit and compared to a reference potential. Differences between the reference potential and the detected potential produce an error signal which is used to drive the control of the resistance value of the adjustable resistance in the measurement circuit.

REFERENCES:
patent: 2844775 (1958-07-01), Miller et al.
patent: 3294943 (1966-12-01), Lorenz et al.

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