Constant-resistance signal conditioner for dynamic strain measurement
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United States of America Patent
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Jun 1, 1993
Grant Date -
N/A
app pub date -
Sep 5, 1991
filing date -
Sep 5, 1991
priority date (Note) -
Expired
status (Latency Note)
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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.
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