Process for automatic calibration or re-calibration of measurements of a physical variable
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United States of America Patent
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Jan 4, 1994
Grant Date -
N/A
app pub date -
Mar 1, 1991
filing date -
Mar 28, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A calibration process utilizes two nearly identical sensors. The characteristic output curve of the first sensor is obtained using the measuring outputs of the second sensor. In particular, the first sensor has a characteristic output curve f[x] where x is a physical variable to be measured. The second sensor has an output curve y[x].apprxeq.f[x+a]. Starting from an initially known portion of the curve f[x], outputs of the second sensor are utilized to extend the known portion of the characteristic output curve f[x] of the first sensor into ranges of the variable x where this function is not yet known.
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