A Low-Cost Liquid-Based Capacitive Sensor for PM2.5 Monitoring

被引：0

作者：

Ashoori, Ehsan ^{[1
]}

Parsnejad, Sina ^{[1
]}

Yin, Heyu ^{[1
]}

Figueroa, J. ^{[1
]}

Sepulveda, N. ^{[1
]}

Mason, Andrew J. ^{[1
]}

机构：

[1] Michigan State Univ, Elect & Comp Engn Dept, E Lansing, MI 48824 USA

来源：

2021 IEEE INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS) | 2021年

关键词：

Particulate matter; PM2.5; capacitive detection; lock-in amplifier;

D O I：

10.1109/MWSCAS47672.2021.9531893

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

PM2.5 is one of the main sources of air pollution and could negatively affect the human health. The available commercial PM monitoring devices are often bulky and expensive and thus not useful for personal use. Toward the implementation of personal/wearable PM monitoring devices, this paper presents a low-cost, liquid-based capacitive monitoring device that uses in-house fabricated electrodes and a custom PCB with off-the-shelf components. The fabricated device is designed to detect concentration of particles in a liquid environment which enables integration of the capacitive detection with future electrochemical-based analysis of PM elemental composition. In this liquid-based detection scheme, a minimum detection level of 4.6 x 10(6) particles/mu L is achieved which corresponds to the particles sampled from an unhealthy level of PM2.5 in the air. The detection response shows a linearity of R-2 =0.9934 during the experiments.

引用

页码：907 / 910

页数：4

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