Chemical sensors

Wyszynski, Bartosz; Nakamoto, Takamichi

doi:10.1016/b978-1-78242-103-0.00005-9

Cited by 1 publication

(1 citation statement)

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“…The semiconductor material of the sensor adsorbs some surrounding oxygen atoms then produce a barrier that resists electron movement and increases sensor resistance. When there is an exposure of reducing gas, it will be oxidized, weakening the barrier, and increasing the sensor conductivity [4], [29]. In this study, oxygen flowed through the gas sensor intensively during data collection and cleaning process.…”

Section: Discussionmentioning

confidence: 96%

Performance of electronic nose based on gas sensor-partition column for synthetic flavor classification

Radi

Putro²,

Adhityamurti³

et al. 2022

TELKOMNIKA

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Electronic nose (e-nose) has been developed and implemented in a wide area, included in food industries. This study was conducted to investigate the performance of an e-nose that utilizes a packed gas chromatography column and a gas sensor for classification of synthetic flavor products. There were six aroma variants of synthetic flavor evaluated, namely durian, jackfruit, ambonese banana, melon, orange and lemon. The e-nose was designed with four main parts, namely aroma provider, column and detector room, microcontroller, and data acquisition system. The device was operated automatically at a stable temperature of 60 °C. Collected data consisted of ten data of each sample was preprocessed by baseline equalization and normalization, extracted its distinctive feature and then were analyzed through pattern recognition analysis. There were two kinds of methods used to analyzed the patterns of the data, namely a fuzzy c-means clustering and an artificial neural network (ANN). With the fuzzy c-means clustering, the result was six data clusters with an unbalanced number of members, indicated that this analysis could not classify samples properly. Meanwhile, analysis with the ANN could classify properly the samples with the level of accuracy of 70%.

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Section: Discussionmentioning

confidence: 96%