In this work we present the results of the investigation of the sensing properties of semiconductor gas sensors with a sinusoidally modulated temperature in the presence of synthetic air (SA) and three volatile air pollutants, i.e. NH3, NO2 and SO2. The measurements were performed for different average sensor heater temperatures and the amplitude of the modulation signal. In addition, the extraction of features from the sensor response using FFT analysis was performed. The results were compared with the results obtained by approach in which the sensors were supplied with a constant value of the heater voltage. The significance of the amplitudes of higher harmonics in the FFT signal was examined in relation to the parameters of modulating signal of the sensor. The goal of this study is to investigate the performance of sensor under different ranges of the working temperature.
Authors
Additional information
- Category
- Aktywność konferencyjna
- Type
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Language
- angielski
- Publication year
- 2019
