Naslov
Evaluation of MOX Gas Sensor Transient Response for Low-Power Operation

Autori
Jeličić, Vana ; Oletić, Dinko ; Sever, Tomislav ; Bilas, Vedran

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

Izvornik
Proceedings of IEEE Sensors Applications Symposium (SAS) 2015 / - , 2015, 108-112

Skup
IEEE Sensors Applications Symposium (SAS) 2015

Mjesto i datum
Zadar, Hrvatska, 13.04.2015. - 15.04.2015

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Gas sensing; Metal-Oxide Semiconductor; Transient response; Energy-efficiency

Sažetak
Metal-Oxide Semiconductor gas sensors are small in size and affordable, which makes them appropriate for implementation in battery-powered wearable sensing devices. However, their big flaw is the need to be heated to a certain temperature to react with the gas from the atmosphere, which consumes energy and drains the battery of the sensing device. In this paper we experimentally evaluate the possibilities to determine changes in gas concentration from the very beginning of the sensor’s response. Our experiments in controlled conditions show that the increment of CO concentration could be determined in the first 65 ms of sensor heating, while the sensing layer is still in its transient state. That indicates the possibility of more than 30 times energy savings compared to the experiments where the CO concentration is determined after the sensing layer reaches stable state.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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