Naslov
Novel and low-cost temperature compensation technique for piezoresistive pressure sensors

Autori
Reverter, Ferran ; Horak, Goran ; Bilas, Vedran ; Gasulla, Manel

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
XIX IMEKO World Congress Fundanmental and Applied Metrology / Girao, Pedro S. - Lisabon : International Measurement Confederation (IMEKO), 2009, 2084-2087

Skup
XIX IMEKO World Congress

Mjesto i datum
Lisabon, Portugal, 06.09.2009. - 11.09.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
pressure sensor; piezoresistive sensor; temperature compensation; sensor electronic interface; microcontroller

Sažetak
This paper proposes a low-cost technique to compensate for the temperature dependence of piezoresistive pressure sensors configured in a Wheatstone bridge. The sensor is treated as a resistive circuit and three equivalent resistances are measured by setting appropriately the bridge terminals. One of these equivalent resistances depends on temperature but not on pressure and, hence, it can be used to compensate for the temperature dependence of the output parameter. In such a way, neither data of a previous temperature calibration nor additional components are required to compensate for the temperature dependence. The proposed technique is applied to a commercial pressure sensor, which is measured by means of a direct sensor-to-microcontroller interface circuit. Experimental results show that temperature effects on the pressure measurement decrease more than ten times when the proposed technique is applied.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA