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Vol. 164, Issue 2, February 2014, pp. 107-113




Remote Multi-layer Soil Temperature Monitoring System Based on GPRS

Ming Kuo CHEN, Wen Bin LI, Jiang Ming KAN

School of Technology, Beijing Forestry University, Beijing 100083, China
Tel.: 010-62338139, fax: 010-62338139

E-mail: leewb@bjfu.edu.cn


Received: 29 October 2013 /Accepted: 28 November 2013 /Published: 28 February 2014

Digital Sensors and Sensor Sysstems


Abstract: There is the temperature difference between the upper and lower layer of the shallow soil in the forest. It is a potential energy that can be harvested by thermoelectric generator for the electronic device in the forest. The temperature distribution at different depths of the soil is the first step for thermoelectric generation. A remote multi-layer soil temperature monitoring system based on GPRS is proposed in this paper. The MSP430F149 MCU is used as the main controller of multi-layer soil temperature monitoring system. A temperature acquisition module is designed with DS18B20 and 4 core shielded twisted-pair cable. The GPRS module sends the measured data to remote server through wireless communication network. From the experiments in the campus of Beijing Forestry University, the maximum error of measured temperature in this system is 0.2C by comparing with professional equipment in the same condition. The results of the experiments show that the system can accurately realize real-time monitoring of multi-layer soil temperature, and the data transmission is stable and reliable.


Keywords: GPRS, SIM300, Wireless transmission, Temperature sensor.


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