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Response differences in binary mixture vapors are investigated by using two systems including the liquid phase and gas phase mixing systems. The response signal with various mixing ratios are analyzed for methanol-acetone and ethanol-acetone mixtures in both maximum response and decay characteristic during exposed and recovery periods. Both feature characteristics can be extracted by discrete wavelet...
Staircase waveforms of metal oxide sensor response modulated heater temperature were analysed and the alternative transient signal processing was proposed to improve the selectivity and sensitivity of gas sensor in order to identify various types of volatile organic compounds. Twenty-one steps of ramping voltage up and down were applied to the sensor heater and the step responses were investigated...
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