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IoT technology is applied in various industrial and food processing sectors to enhance quality and reduce production costs. In this paper, we develop a complete IoT system capable of real-time temperature and humidity measurement with high precision using a 24-bit ADC, based on the dry-bulb and wet-bulb principle. The system supports a wide temperature measurement range by utilizing T-type and K-type thermocouple wires, making it suitable for installation in a food drying chamber or manufacturing plants with strict temperature control requirements. Data from terminal nodes are collected, displayed, and transmitted to the Raspberry Pi gateway using LORA protocol. The data is storage, analyzed by the cloud server and displayed on the web using RESTful API. The control node includes an 8-channel relay, which can be controlled automatically or manually via the web interface. This solution contributes to the advancement of industrial production and smart food processing, offering high applicability and practical benefits.

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Developing IoT System for Monitoring and Controlling the Temperature, Humidity in Drying Chamber with High Accuracy

  • 会议论文

  • 发表日期：

    2026年

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  • Tran Thi Thu Huong,
  • Hoang Chi Dat,
  • Nguyen Huu Viet Anh,
  • Kim Văn Hoa,
  • Do Minh Hiep

摘要

IoT technology is applied in various industrial and food processing sectors to enhance quality and reduce production costs. In this paper, we develop a complete IoT system capable of real-time temperature and humidity measurement with high precision using a 24-bit ADC, based on the dry-bulb and wet-bulb principle. The system supports a wide temperature measurement range by utilizing T-type and K-type thermocouple wires, making it suitable for installation in a food drying chamber or manufacturing plants with strict temperature control requirements. Data from terminal nodes are collected, displayed, and transmitted to the Raspberry Pi gateway using LORA protocol. The data is storage, analyzed by the cloud server and displayed on the web using RESTful API. The control node includes an 8-channel relay, which can be controlled automatically or manually via the web interface. This solution contributes to the advancement of industrial production and smart food processing, offering high applicability and practical benefits.