An Automatic Feature Extraction Method for Gas Sensors Based on Color-Enhanced Phase Space

IF 2.2 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Guangfen Wei;Xuerong Wang;Aixiang He;Wei Zhang;Baichuan Wang
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引用次数: 0

Abstract

Aiming to improve the effectiveness and the identity of features extracted from gas sensor responses, a novel automatic feature extraction method is proposed and studied. A simple color-enhanced phase-space approach is proposed to convert the dynamic gas sensor signals into images, which emphasizes the internal features of phase space. A lightweight neural network, i.e., MobileNetV2, is adopted to automatically extract the features and classify the odors. The method has been embedded into a lab system to classify the freshness of yellow peaches, and the final freshness classification accuracy reaches 98.58%, which is more than 20% improvement of average classification accuracy than the traditional time domain or frequency domain feature extraction and recognition methods. Compared to the original phase space, more than 10% improvement in average classification accuracy has also been obtained.
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来源期刊
IEEE Sensors Letters
IEEE Sensors Letters Engineering-Electrical and Electronic Engineering
CiteScore
3.50
自引率
7.10%
发文量
194
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