Research&Design Of Gateway Adapter In Intelligent Agriculture System

By installing light, temperature and humidity sensor in the greenhouse, the intelligentagriculture system can conduct real-time acquisition on the crop temperature. For realizingintelligent control, the client operates the computer or3G phones, with the aid of wirelesscommunication network, to observer collective field data in real time, and start relatedequipment remotely. This technology is the hot spot of modern science and technology on thetraditional agriculture. It needs reasonable structure, common platform and reliable safetyinformation transmission to construct high quality intelligent agriculture platform. According tothe core of technical difficulties of the system, this article makes relevant theoretical andexperimental research, and the main research contents are as follows:1、Firstly, on the basis of concluding the shortage of existing domestic large-scaletraditional agriculture, it analyzes the necessity, development trend and the key technicaldifficulties of the intelligent agriculture. Then it puts forward to design the Gateway Adaptersystem to solve a series of problems, such as the remote control, agriculture intelligentmanagement and so on.2、It researches the bottom network communication of Java, and compares the differencesand similarities between TCP and UDP protocol on Java programming. According to theparticularity of the sensor data in the system, it focuses on the research on the Modbus/TCPprotocol, and modifies the convention of Modbus protocol, then puts forward an enhancedModbus protocol (CTMB) to build remote network communication in intelligent agricultureplatform. Through the encapsulation of data information with the protocol, it can transfer theinformation of agricultural data better and more targeted.3、By researching data exchange technology based on XML, it realizes information storageand transmission in XML format, regulates the descriptive way of agricultural information, andshields the problems of backstage heterogeneous or multi-source effectively. Through reducingthe network flow, it solves the deficiency systematically, such as heavy load of the server, low efficiency of system and so on, also saves the operation cost and improves the generality ofsystem.4、It studies the safety technology on the port of Gateway Adapter system, and expoundsthe data encryption algorithm and principle of AES and SHA-1, and then comes up with a kindof mixed encryption mechanism using AES and SHA-1to ensure data privacy, reliability andsafety. Through the message authentication model to ensure the integrity of the data, preventforgery and manipulate data information, it solves effectively the safety of the data in thetransmission on Gateway Adapter system.Based on the above theory, and combining with needs of the project of intelligentagriculture platform, it does outline design and detailed design for Gateway Adapter system. Itreaches the design requirements in the aspects of reliability, real-time, security and so on, in theactual test and operation; Gateway Adapter system also can satisfy application requirements oneach function.