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The Application And Research On The Connecting Technology Of Microchip To Internet In Intelligent Communities

Posted on:2005-04-20Degree:MasterType:Thesis
Country:ChinaCandidate:J J LiuFull Text:PDF
GTID:2168360125458546Subject:Control theory and control engineering
Abstract/Summary:PDF Full Text Request
With the development of Digital City, The Smart Community has entered a new development era. The traditional conceptions, technologies and management have happened great changes. More and more new technologies and new products have been adopted and the market volume has been continuously enlarged. The technology of microchip connecting to Internet advances the progress of standardization and the digital processing of Smart Community.The paper introduces the meaning, the development trend and the application of various advanced technologies of the late-model Smart Community. The organization of the embedded system Internet technology has been discussed home and a few kinds of perceptions about the embedded system connecting to Internet have been studied and compared. The perception of software realizing TCP/IP protocol suite has been explained in detail.The problem in the development of microchip connecting to Internet is that it is difficult to make a decision in choosing the protocol of Transport Layer. UDP protocol is easy to perform but you need to spend more energy in ensuring the stability of it, while TCP is very stable one but the resources needed is beyond the abilities of 8bit and 16bit microchips.The paper stresses to find or present an ideal resolution to the problem of Transport Layer. Taking it as the basis, two resolve methods have been presented in the article. One is the application of T/TCP protocol that is known by few people. T/TCP protocol is the attached one of TCP and has been defined in the standard RFC 1644 in 1994. T/TCP is a middle course, which can not only speed up the transaction of short length data but also can preserve the nature, stability, reliability and non- repetition of TCP protocol. Another is the presenting of a kind of Embedded System Special Protocol ESSP. The author takes the frame format of ICMP as the prototype, adds some mechanisms to the protocol like sequence and acknowledge sequence mechanism similar to TCP and introduces the Stop and Wait mechanism, which successfully resolves the repeatability error of UDP. In order to validate of the two protocols T/TCP and ESSP, the author analyses and tests the four protocols UDP, TCP, T/TCP, ESSP in theory and reality. The testing process takes NetAnalyzer of EQ Information Technology Inc. as the testing tool, that is a kind of net supervisor and protocol analyzer software. A number of testing has been accomplished in 100M LAN,LowBandwidth-LowDelay net and LowBandwidth-HighDelay net. The testing result has proved the feasibility, stability and superiority of T/TCP and ESSP.In addition, the author has designed a reality project The Management System for Intelligent Community SCT-100IPHM provided by Shenzhen Zheng Xing Te High-tech Limited Corporation, which consists of the Remote Meter System, Electrical appliance Management System, Home Security System and Community Information Service System. The product has been applied in a lot of high-class communities in Shenzhen or Shanghai and performed very well, which has a unique advantage to the traditional field bus system.
Keywords/Search Tags:Embedded System, TCP/IP, Transmission Layer, T/TCP, Embedded System Special Protocol
PDF Full Text Request
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