Flexible Temperature and Strain Sensors
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United States of America Patent
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Issued Date -
Jan 15, 2015
app pub date -
Jan 30, 2013
filing date -
Jan 30, 2012
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Abstract
A strain compensated temperature sensor includes a first, temperature dependent resistor, and a second, substantially temperature independent resistor connected in series with the temperature dependent resistor. At least one electrical contact allows an electrical potential difference to be applied across both resistors simultaneously. Both the temperature dependent resistor and the substantially temperature independent resistor are sensitive to mechanical strain. This permits temperature readings from the sensor to be corrected automatically for mechanical distortion of the sensor. The temperature dependent resistor and the substantially temperature independent resistor are of substantially similar construction, preferably being located adjacent one another in or on a common substrate, and hence have a similar response to a mechanical force applied to them.
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