Selective detection of individual gases and CO/H2 mixture at low concentrations in air by single semiconductor metal oxide sensors working in dynamic temperature mode

Selective Detection of Hydrocarbons in Real Atmospheric Conditions by Single MOX Sensor in Temperature Modulation Mode

“…A deployed network of autonomous miniature micromachined metal oxide semiconductor gas sensors with low power consumption possess a great perspective of practical use in this regard [2,3]. The main obstacle of their high cross sensitivity can be overcome by the implementation of sensor arrays or working temperature modulation in combination of signal processing and nonlinear calibration [4,5]. In this work we demonstrate stable selective detection of propane and methane in low concentrations in the real urban ambient air by the SnO2-based semiconductor gas sensor.…”

A New Method of Mixed Gas Identification Based on a Convolutional Neural Network for Time Series Classification

“…Regarding the study of mixed gas classification, the most commonly used research methods are machine learning methods. For example, Krivetskiy used a random forest, support vector machine and shallow multi-layer perceptron algorithm to selectively detect the presence of low concentrations of individual gases [23], Fonollosa proposed the so-called inhibitory support vector machines method to identify whether ethylene is present in a mixed gas [24]. The idea of classifying mixed gases using deep convolutional neural networks was proposed by Pai [20], who applied the “deep” learning model to gas classification for the first time.…”

Gate-tunable gas sensing behaviors in air-stable ambipolar organic thin-film transistors

“…[1][2][3] However, this approach suffers from complex fabrication procedures such as surface modication 4 or tedious chemical synthesis steps, 5 and limited high-density integration of sensor arrays for ultra-miniaturized gas sensor systems. [4][5][6] As an alternative to multi-element sensor arrays, a single but multiparameter sensor which is capable of simultaneous sensing of various parameters by controlled modulations of operating conditions (i.e., temperature, 7,8 applied voltage, [8][9][10] and light illumination 6,11,12 ) has been suggested. This approach potentially leads to a very simple, easy-to-fabricate and low-cost gas sensor system.…”