pp. 237-242
S&M1174 Research Paper of Special Issue https://doi.org/10.18494/SAM.2016.1290 Published: March 30, 2016 Analysis of Gas Sensor Response Using Subspace-Based Prony's Method [PDF] Yoshinori Takei, Yasoshima Hiroyuki, Kazuki Hirasawa, Hidehito Nanto, and Kiyoshi Wada (Received December 7, 2015; Accepted February 26, 2016) Keywords: semiconductor-type gas sensor, subspace identification method, Prony's method, feature extraction
This paper shows the feature extraction for gas discrimination from the transient response of a gas sensor using a subspace-based system identification technique. We have proposed an approximation and analysis method for the transient response using a subspace-based identification method. This is based on Prony's method and can extract time constants and gain parameters of multicomponents of a sensor output response. The estimated parameters can be used to improve gas discrimination in multivariate analysis as elements of pattern vectors. Transient responses of semiconductor-type gas sensors were evaluated using the proposed method. We show that the method can extract features connected with characteristics of measured gases from these sensor responses.
Corresponding author: Yoshinori TakeiCite this article Yoshinori Takei, Yasoshima Hiroyuki, Kazuki Hirasawa, Hidehito Nanto, and Kiyoshi Wada, Analysis of Gas Sensor Response Using Subspace-Based Prony's Method, Sens. Mater., Vol. 28, No. 3, 2016, p. 237-242. |