Voltage compensation method of WSN soil moisture acquisition nodes

被引：0
|
作者：
Zhang R. [1 ]
Yu G. [1 ]
Zhang L. [1 ]
Liu J. [1 ]
Zhang Y. [1 ]
机构：
[1] School of Electrical and Information Engineering, Jiangsu University
来源：
Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery | 2010年 / 41卷 / 11期
关键词：
Compensation; Neural network; Soil moisture; Wireless sensor network;
D O I：
10.3969/j.issn.1000-1298.2010.11.035
中图分类号：
学科分类号：
摘要：
Aimed at the voltage-sensitive problem of EC-5 sensor which was suitable for WSN soil moisture acquisition nodes, the sources of detection error was analyzed according to the sensor working principle. It was found that the error would increase with the soil moisture when sensor parameters were determined. Using CC2430 platform as WSN information transmission node, WSN soil moisture acquisition system with multiple nodes based on controller and host computer was established. Taking node voltage u and the real soil moisture θ as parameters, the inverse modeling of nonlinear soil moisture sensor system was performed by neural network, and the compensation of EC-5 sensor detection error caused by supply voltage was implemented in host computer. Experimental results showed that this method could sharply reduce the influence caused by node voltage variation and improve the detection precision.
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收藏
页码：178 / 182
页数：4
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