Design and Implementation of Eco-hydrological Data Acquisition System based on SDI-12 Bus
Bai Yulong1,Dong Cunhui1,Shan Jiming1,Wang Zuocheng1,Jin Rui2,Kang Jian2
(1.College of Physics and Electrical Engineering,Northwest Normal University,Lanzhou 730070,China;
2.Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,China)
Abstract：This paper gives an introduction about a new kind of data acquisition system which can collect certain kinds of eco-hydrological data such as soil temperature,humidity,salinity and conductivity.The system is based on microcontroller.The sensor interface circuits,communication timing control circuits,SD storage circuits and display circuits were designed for the Hydra Probe II soil property sensor.Based on the requirements of Eco-hydrological wireless sensor network in Heihe river basin,the communication protocol between data acquisition systems and the sensors were realized by SDI-12 bus.The Eco-hydrological data can be measured,stored and transfered by the proposed system.Combined with Network communication and Watershed data management platform,an eco-hydrological wireless sensor network can be easily realized.
Bai Yulong,Dong Cunhui,Shan Jiming et al. Design and Implementation of Eco-hydrological Data Acquisition System based on SDI-12 Bus[J]. Remote Sensing Technology and Application, 2013, 28(3): 453-458.
中文说明:图1 系统总体框图 英文说明:Fig.1 Overall block diagram of the system 中文说明:图2 硬件设计框图 英文说明:Fig.2 Schematic of Hardware design 中文说明:图3 SDI- 12传感器接口电路设计 英文说明:Fig.3 SDI- 12 sensor interface circuit design 中文说明:图4 通信协议时序图 英文说明:Fig.4 Timing diagram of communication protocol 中文说明:图5 SDI- 12通信协议流程图 英文说明:Fig.5 Flow chart of SDI- 12 communication protocol 中文说明:图6 理论分析波形图 英文说明:Fig.6 Waveform chart from theoretical analysis 中文说明:图7 实验测试整体波形 英文说明:Fig.7 Overall waveform of experimental test 中文说明:图8 串口调试输出 英文说明:Fig.8 Serial debug output 中文说明:图9 液晶屏调试显示 英文说明:Fig.9 LCD debug display
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2013, Vol. 28 
