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Design of Remote Monitoring System for Ambient Temperature/Humidity Based on STM32 MCU
Received:January 17, 2022  
DOI:10.11981/j.issn.1000-6842.2022.03.118
Key Words:microcontroller;temperature/humidity;remote monitoring;Wi-Fi wireless transmission;mobile phone APP
Fund Project:广东省自然科学基金项目“纳米纤维素基/二氧化钛复合透明柔性气敏传感器件作用机制的研究”(2021A1515010327)。
Author NameAffiliationPostcode
LIU Xiaobin State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 510640
LIU Yin State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 510640
SHEN Wenhao State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 510640
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Abstract:
      Ambient temperature/humidity affects the photocatalytic oxidation degradation efficiency during degradation of papermaking polluting gases. Therefore, a remote monitoring system for remote, fast, and real-time temperature/humidity monitoring is designed based on STM32 microcontroller in this study. The as-designed system takes STM32F103VET6 microcontroller as the core, collects ambient temperature and humidity data through DHT11 module, and establishes a connection with the APP on mobile phone via the ESP8266 Wi-Fi wireless transmission module, so as to realize data transmission and visualization. This system is further verified with standard humidity of saturated salt solution. The results show that the average relative error between the measured data by the system and the standard humidity was within 3.1%, and the response/recovery time of this system is within 30 s, which prove that this system has good accuracy, stability, and rapidity and is able to realize intelligent remote monitoring of ambient temperature/humidity.
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