The Design of Environmental Temperature and Humidity Remote Monitoring System Based on AT89S52 MCU

Abstract:

The AT89S52 MCU is the central core of the system which combined with external circuit modules for data processing. Under the stable supply of 5v DC power, the each module can be initialized by MCU, through the serial port communication technology for data exchange. The single serial bus interface technology is used to obtain DHT11 temperature and humidity sensor testing data in the system. Through the MCU data processing, the detected data will be compared with the alarm data which is given by the users. When a given range is exceeded by the detected data, the sound and light alarm is triggered, moreover, temperature and humidity control is performed. Compared with the LCD1602, the advantage of the temperature and humidity remote monitoring system are the simple structure of the circuit, work stability, accuracy and fully suitable for the need of temperature and humidity monitoring system in human living environment.

• Periodical: Applied Mechanics and Materials (Volumes 496-500)
• Pages: 1595-1602
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.496-500.1595
• Online since: January 2014
• Authors: Hai Xia Li, Jie Hui Zeng
• Keywords: Alarm, AT89S52, DHT11, Humidity, Remote Monitoring, Temperature

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