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Agricultural information data acquisition analysis is digitizing an important component of agriculture. Traditional wired data transmission mode and the distance is often subject to environmental impact, and wireless communications due to the geographical environment impact and frequency resource constraints, high cost, maintenance work is more arduous. Therefore, the direct use of third-party network has been developed to achieve remote monitoring of its investment costs are low, the principle is simple, safe, high security, without the formation of a private network and maintaining the network characteristics, the development of surveillance technology has become a new direction. In view of the above, the thesis of field information collection to monitor the number of nodes and more scattered distribution, often require disassembly mobile, and communication costs are significantly higher than the control part of the costs and other issues, research directly through the Internet, using the Web interface monitoring approach. This thesis work and conclusions are as follows: (a) in-depth analysis of the GSM-SMS communication theory, especially SMS text messaging protocol, the transmission data formats, encoding format. Mobile communication networks of various communication features analysis and comparison of data, using the GSM network presents a platform as a data transmission scheme. (2) combined YC2440 development platform, TC35I other hardware modules, building embedded Supervisory Control and Data Acquisition (SCADA) system, hardware platform, and based on this platform, porting embedded operating system, the design of the data acquisition and control interfaces, structures B / S mode WEB, remote collection of the soil to achieve real-time data display and wireless monitoring, wireless remote network monitoring technology used in agricultural information detection. (3) for large-scale farmland traditional SCADA systems, the monitoring points and dispersion, vulnerability to geographical conditions and climatic factors, pre-monitoring facilities investment costs are high, characterized by difficulty in laying cables, the use of nuclear C51 MCU, TC35I wireless communication module, the design is based on the GSM network intelligence soil parameters acquisition and transmission terminals, soil parameters for monitoring wireless transmission of data and on-site relay equipment control. (4) In the indoor environment, the analog data acquisition conditions of soil tests show that the system can accurately display the data, refresh, and the data collection terminal signal control, soil monitoring system to meet real-time requirements, and is simple to operate, intuitive interface, easy to maintain and update the system advantages. The topic of today's farmland monitoring system according to the characteristics of the GSM network data transmission platform in the field of industrial SCADA related technologies successfully applied in various fields of agriculture monitoring, surveillance on the future of agriculture toward large-scale, highly automated direction has certain reference significance.
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