Wireless sensing system for environmental humidity and temperature monitoring |
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Authors: | YUAN Yao-dong;ZHANG Ai-jun |
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Affiliation: | YUAN Yao-dong;ZHANG Ai-jun;School of Mechanical Engineering,Nanjing University of Science and Technology; |
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Abstract: | Aiming at the actual demand for monitoring environmental information,a wireless sensing system for temperature and relative humidity(RH)monitoring based on radio frequency(RF)technology and mobile network was designed.This paper introduces the architecture of the system.The system uses AVR micro controller unit(MCU),KYL-1020U RF module and SHT71 to complete real-time temperature and humidity monitoring,and uses SIM900A module to realize remote alarming and monitoring with short message system(SMS)through global system for mobile communication(GSM).Experimental results show that the designed system has good stability of measurement and real-time performance,and it can be used in some small temperature and humidity monitoring occasions. |
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Keywords: | environmental monitoring temperature and humidity radio frequency(RF)technology wireless transmission global system for mobile communication(GSM) |
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