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GSM-based remote monitoring system of meteorological information farmland

Author: GuoZhiWei
Tutor: ZhangYunWei
School: Kunming University of Science and Technology
Course: Agricultural Electrification and Automation
Keywords: Acquisition node wireless network Short Message Remote monitoring Data Management Web publishing
CLC: S163
Type: Master's thesis
Year: 2008
Downloads: 136
Quote: 1
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Abstract

Agricultural information is the development trend of modern agriculture. In recent years, agricultural information acquisition methods and means to continuously improve and enrich. But generally speaking, there are still some problems to be solved, such as: agricultural means of information collection process is relatively backward, the efficiency is not high; transmission mode by wiring is difficult and costly, the transmission distance is limited, network licensing and other restrictions; well as farmland scattered distribution, equipment and more, there is information on the management of many kinds of data is large, difficult management deficiencies. Fine for the current field of agriculture, agricultural information collection problems, this study presents the embedded technology, wireless transmission technology and the Internet combined application to farmland acquisition and management of meteorological information, weather information for the farmland acquisition, management and analysis provides new means, the new method. Its significance lies in combining the advantages of traditional data collection methods, with extensive coverage of GSM wireless network based on the Internet network with sophisticated constructs a hierarchical network model (wireless network monitoring center collection node + + mobile phone users and network users) to various parameters to achieve the system information (meteorological information, control information, request information and query information) the effective transmission, identification and management, both to overcome the traditional shortcomings remote monitoring mode, while providing phone and Internet Authorized User Authorized User query. The system can be manually adjusted microclimate and crop cultivation and management, rational distribution of crops, agricultural zoning and planning to provide information support, while also providing agricultural weather forecasting and intelligence services, which greatly facilitates the user information management and farmland decisions. Finally, the paper combined with the practical application of the system performance are analyzed, and the White Dragon Kunming University campus in experimental plots carried out field experiments, the results showed that: the program system structure model is reasonable and feasible hardware and software design, with flexible expandability and flexibility , technical performance to meet the agricultural weather information RMON actually need. The main contents of this thesis and the results are: (1) large amounts of data through the collection, analysis of the current situation at home and abroad field information collection and problems, discuss the characteristics of the research object and meaning, summed up the wireless network technology based remote monitoring system for farmland development direction of meteorological information and trends. (2) compare the traditional field information collection process communication technical features discussed GSM. GPRS and CDMA and other wireless communications principles and characteristics, and focus on research in accordance with the characteristics of the object carried on the various modes of communication compared and analyzed to verify the SMS service based on GSM network communication method to meet this topic on farmland meteorological information RMON requirements. (3) design and development of a wireless network acquisition nodes (including sensors, core board, collecting boxes, etc.) and a communication terminal (with the monitoring center connected to a PC), and use the corresponding C language acquisition software, which provides a collection node buttons to send, transmit regularly sent three modes and alarms, concrete realization of the timing of farmland environmental information collection, storage, display, transmission and early warning. (4) through VB. NET and SQL Server database programming, developed based on VB.NET and SQL Server platform monitoring center management software, which can support mobile authorized user query. In addition, to facilitate network user query, and use ASP. NET developed a browser-side software to realize the agricultural meteorological information management and web publishing. (5) has developed a collection node with the monitoring center, monitoring center and authorized users two mobile phone application layer protocol to ensure that the various parameters of the system and identification of effective transmission of information, reducing the line blocking. (6) Application of the system development process, several key technologies, such as: design and production of circuit boards, protocol packs and unpacks, SMS group sending, database management, were studied to solve the key problems in systems development.

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