The Research And Application Of The Means Of Data Information Transfer In Irrigation District

In most irrigation district,the means of data information trasnfer is scattered and backward. Althought new sensors and advanced transfering tools are used in few irrigation district,it is difficult to gain ground because of their high price.In this paper,a practicable means of data information trasnfer is shown,which is based on GPRS,a wireless net technology,and wire net technology in irrigation district. In this paper,two points are thought.One is need of irrigation district deploitation.The other is that GPRS is widly used in demestic wireless communication.Because of these two points,a transfering design is put forward,which includes a handset based on PDA&GPRS CF card interface circuit and HTTP.The system works on internet WWW servers.In this paper,it introduced simply configuration of Windows 2000 Server,the platform of the system,and the charactors of ASP3.0 and HTML4.0,the main program tools and language.Then,the progress to choose,build and maintain data base is narrated in order.Security of communication net is important.The screen of PDA is small.Support to HTML from explor is limited.The transfering speed of GPRS is slow.On these problems,the progress to program and maintain program on handset and manager of the system are illuminated detailedly in this paper. The system has been tested for.The system's structure is clear.Its security is good.Its functions are complete.Its interface is friendly,Operating the system is convenient.The system is very easy,convenient,well timely and good intercommunciation.In a word,the system is useful to irrigation district.