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KMID : 1039220220320010078
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Journal of Korean Society of Occupational and Environmental Hygiene
2022 Volume.32 No. 1 p.78 ~ p.88
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Development of an IoT Smart Sensor for Detecting Gaseous Materials
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Kim Wook
Kim Young-Kyo
You Yun-Sun
Jung Ki-Hyo
Choi Won-Jun
Lee Wan-Hyung
Kang Seong-Kyu
Ham Seung-Hon
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Abstract
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Objectives: To develop the smart sensor to protect worker’s health from chemical exposure by adopting ICT (Information and Communications Technology) technologies.
Methods: To develope real-time chemical exposure monitoring system, IoT (Internet of Things) sensor technology and regulations were reviewed. We developed and produced smart sensor. A smart sensor is a system consisting of a sensor unit, a communication unit, and a platform. To verify the performance of smart sensors, each sensor has been certified by the Korea Laboratory Accreditation Scheme (KOLAS).
Results: Chemicals (TVOC; Total Volatile Organic Compounds, Cl2: Chlorine, HF: Hydrogen fluoride and HCN: Hydrogen cyanide) were selected according to a priority logic (KOSHA Alert, acute poisoning statistics, literature review). Notifications were set according to OEL (occupational exposure limit). Sensors were selected based on OEL and the capabilities of the sensors. Communication is designed to use LTE (Long Term Evolution) and Wi-Fi at the same time for convenience. Electronic platform were applied to build this monitoring system.
Conclusions: Real-time monitoring system for OEL of hazardous chemicals in workplace was developed. Smart sensor can detect chemicals to complement monitoring of traditional workplace environmental monitoring such as short term and peak exposure. Further research is needed to expand the scope of application, improve reliability, and systematically application.
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KEYWORD
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Chemical exposure monitoring, IoT, sensor, poisoning
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