การออกแบบและทดสอบเบื้องต้นเซนเซอร์ตรวจวัดฝุ่นละออง โดยใช้เทคนิคการวิเคราะห์ค่าความนำทางไฟฟ้า

Wisanapat Rattanachan; Theerachot Lawong; Visut Asanavijit; Wanasuda Khamput; Panich Intra

doi:10.60136/bas.v14.2025.4028

Authors

Wisanapat Rattanachan Research Unit of Applied Electric Field in Engineering, College of Intrgrated Science and Technology, Rajamangala University of Technology Lanna, Chiang Mai 50220, Thailand
Theerachot Lawong Faculty of Engineering Rajamangala University of Technology Lanna, Chiang Mai 50220, Thailand
Visut Asanavijit Research Unit of Applied Electric Field in Engineering, College of Intrgrated Science and Technology, Rajamangala University of Technology Lanna, Chiang Mai 50220, Thailand
Wanasuda Khamput Research Unit of Applied Electric Field in Engineering, College of Intrgrated Science and Technology, Rajamangala University of Technology Lanna, Chiang Mai 50220, Thailand
Panich Intra Research Unit of Applied Electric Field in Engineering, College of Intrgrated Science and Technology, Rajamangala University of Technology Lanna, Chiang Mai 50220, Thailand

DOI:

https://doi.org/10.60136/bas.v14.2025.4028

Keywords:

Particle, Particulate matter, Sensor, Conductivity

Abstract

This research article presents the design and preliminary testing of a particulate matter sensor that employs the principle of analyzing particle conductivity using readily available household equipment materials. The sensor comprises a sensor head, a DC high-voltage power supply, a signal amplifier, and signal mixing circuits. These components collectively convert an analog-to-digital signal, record the data, and process it. The sensor head features a needle electrode that overlaps with a T-pipe electrode. The needle electrode is connected to a high-voltage power supply, while the T-pipe electrode is connected to the signal amplifier and mixing circuit.
This connection transmits the analog converter to a digital signal, which is then transmitted to the recording and processing system for data storage and processing. In this research, the sensor’s current and voltage measurement properties were compared to those of a comparable method detector that measures particle mass concentration. The results were satisfactory, indicating a linear correlation between the current of the developed sensor and the particle mass concentration of the comparative method detector. This suggests that the developed sensor prototype can be effectively utilized to measure high-concentration exhaust dust in real time.

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