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Vol. 162, Issue 1, January 2014, pp. 215-220




A Measurement System of Electric Signals on Standing Trees

Hao TIAN, Jiangming KAN, Qing XU, Chao ZHANG, Zihao JIANG, Yangfan LI

School of Technology, Beijing Forestry University, 100083, China
Tel.: 8610-62337736

E-mail: hao_tian92@126.com, kanjm@bjfu.edu.cn


Received: 9 October 2013 /Accepted: 9 January 2014 /Published: 31 January 2014

Digital Sensors and Sensor Sysstems


Abstract: The standing tree electric signal (STES), defined as the electric potential difference between standing trees and the surrounding soil, can be utilized to reflect the biological nature of the trees. This signal should be measured precisely because it can also be collected and used as the electric power energy. In this paper, the automatic measurement system of standing tree biological electric signal based on MSP430 MCU. First of all, the basic structure of the presented system is introduced and it includes three modules: amplification module of the standing tree electric signal, the acquisition and processing of the signal module and the serial communication module. Then, the performances of the built system are respectively validated by the Poplar, Planetree, and Platanus in Beijing Forestry University. The result indicated that the relative error of this system is less than 2 %. The presented system can be considered as the foundation of the subsequent study on the mechanism of the biological electric signal and the application of the biological electric energy on standing trees.


Keywords: Biological electric potential difference, Amplifying circuit, MSP430 MCU, Serial communication.


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