The DC resistance of a Taguchi gas sensor is influenced by the ambient gas. To improve the selectivity and sensitivity of a sensor the fluctuation enhanced sensing (FES) was used. The paper proposes a novel methodology of utilizing FES technique that sample composition of an ambient atmosphere and hold it for further processing (sample-and-holding technique). The method uses the heated gas sensor to sample an ambient atmosphere and after cooling to room temperature the gas molecules are kept frozen during the subsequent measurements. A special sample-and-holding computer-controlled system has been constructed for noise data acquisition. The experimental results enabled to determine the optimal measurement conditions for achieving a substantial information about the ambient atmosphere for cooled sensor.
Authors
- dr inż. Maciej Trawka,
- prof. dr hab. inż. Janusz Smulko link open in new tab ,
- dr inż. Lech Hasse link open in new tab
Additional information
- Category
- Aktywność konferencyjna
- Type
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Language
- angielski
- Publication year
- 2014
