张荣标,余功江,张磊,刘骏,张业成.WSN土壤湿度采集节点电压补偿方法研究[J].农业机械学报,2010,41(11):178-182.
.Voltage Compensation Method of WSN Soil Moisture Acquisition Nodes[J].Transactions of the Chinese Society for Agricultural Machinery,2010,41(11):178-182.
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WSN土壤湿度采集节点电压补偿方法研究   [下载全文]
Voltage Compensation Method of WSN Soil Moisture Acquisition Nodes   [Download Pdf][in English]
  
DOI:10.3969/j.issn.1000-1298.[year].[issue].[sequence]
中文关键词:  无线传感器网络  土壤湿度  神经网络  补偿
基金项目:
张荣标  余功江  张磊  刘骏  张业成
江苏大学
中文摘要:针对适用于WSN土壤湿度采集节点的EC-5传感器对电源电压敏感的问题,从传感器工作原理入手分析电源电压引起检测误差的来源,且发现当传感器各项参数确定后,这种误差随着被测土壤湿度增大而增大。采用CC2430芯片作为WSN信息传输节点,建立具有多节点的上下位机WSN土壤湿度采集系统,以节点电压u和被测土壤实际湿度θ为对象,运用神经网络对采集节点中非线性土壤湿度传感器系统进行逆向建模,在上位机上实现由电源电压引起EC-5传感器检测误差的补偿,实验结果表明,该方法能有效地减少节点电池电压变化对WSN土壤湿度采集精度的影响。
Key Words:
Abstract: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. 

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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