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Correcting Temperature dependence of sensitivity in Pressure Sensors

IP.com Disclosure Number: IPCOM000230669D
Publication Date: 2013-Aug-30

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The IP.com Prior Art Database


Piezo-Resistive Transducers are widely used in pressure sensors. Apart from sensitivity to changing pressure, they exhibit an undesirable dependence on temperature as well. Various temperature compensation techniques are in practice that can be categorized into modulation of excitation voltage or excitation current of the PRT. In this paper we present a simple method of voltage excitation in which the reference of the voltage regulator is modulated by temperature to the extent of sensitivity of the PRT.