[21p-A301-1~13] 1.3 Novel technologies and interdisciplinary engineering

[21p-A301-10] Improvement of the Signal to Noise Ratio for Gas Sensor Measurements by Repetitive Measurements

〇Gaku Imamura^1,2, Genki Yoshikawa^1,3, Kosuke Minami¹ (1.NIMS, 2.Osaka Univ., 3.Univ. of Tsukuba)

Keywords:gas sensor, noise reduction, Membrane-type surface stress sensor (MSS)

In gas sensor measurements in which the concentration of a target gas species is low, only measurement results with a low signal-to-noise ratio (SNR) can be obtained. In this study, we analytically show that repetitive cycles of introducing a sample gas and a carrier gas can increase the signal-to-noise ratio of the result. We also demonstrate the improvement of the SNR in gas sensing measurements with membrane-type surface stress sensors (MSS).