Study On The Network System Of Remote Distributed Control In The Greenhouse

Jilin Province is the hometown of Panax,the output of the Panax is themost,and the Technology of the planting is the best. Our country is the mainlycountry which is planting Panax and gen-seng,but the current output is beingdowntrend.The mainly reason is that planting need cutting down the tree ,andwhen the natural forest is protecting by law, the output of the Panax and gen-sengis less and less.So it is the best way to find the other way to plant panax andgensing.At home, ganax is almost not planting in the greenhouse.This discourse is studying on the digital production of the Panax andgen-seng in the Jilin Province,and build the remote distributed control networksystem.The system can transport data remotely,such as upload and down the fileon the server,and most of important ,it can import the data to the MySQL serverfrom the Excel Files.The System Integrated the intelligence control system ofgreenhouse and database managed system of panax,the experts can get theinformation and diagnose it and then start the intelligence system to control thegreenhouse.By the use of the system we can control the product course andsituation of the Jinlin panax and gen-seng by the Internet.It will effectively controlthe product and can enhance the product efficiency.The study is base on thedigital product of panax ,and it is according with the developing trend of theplanting of the drug planting and the product of the establishment agriculture,sothe system will have the more application.As the developing of the computer technology and network technology,it isthe certainly developing trend that the greenhouse control system is base on thenetwork.And the network operation is not only the data businesss,and also it isinclude multimedia composed of the voice and image.Modern greenhouse isdeveloping by the way of auto,intelligence,multimedia and network..The current remote control system structure is complex and the distributeddistance is faraway,and as the developing of the Internet and WWWtechnology,the plantform must be the different when we develop and use thesystem.In the distributed circumstance ,there must be many circs:differenthardware,different operation system,different system software,differentapplication software, different develop toolkit , various user interface,differentnetwork.It is difficult to solve these problem by the Client/Server model.But theCORBA technology and Browser/Server model could shield the sub-networkenvironment,and we can get the support of distributed technology by the twokinds of technology,and so we can get the friendly and accordly UserInterface.The current popular distributed technology include OMG'sCORBA(Common Object Request Broker Architecture),the Microsoft'sCOM(Component Object Model) and Sun's RMI/J2EE.J2EE stand for java2 Enterprise Edition,the technology includes JavaServlets,Jsp (Java ServerPages ), EJB(Enterprise JavaBean),JDBC and soon..And the core technology of the J2EE is EJB technology,and the implements ofEJB is RMI technology,it stand for remote method invocation.and the RMIdesigned by the corba's thought.CORBA is abbreviation of Common ObjectRequest Broker Architecture,the target ot corba is to develop the sortware inthe different operation system and different programmer languages.The servicesof corba is described by IDL(Interface Definition Language),it can be implementedby java or c++,it includes the stub(client)and server(skeleton),those can bedeveloped by different languages.COM is abbreviation of Common ObjectModel,it is the criterion of Microsoft distributed network application,the ActiveXis business components of COM,it released with the way of binary code by theDLLs or EXEs.This paper analyses and compares these technology,and decided to build theRemote Control System base on the RMI/J2EE technology.The system is belonged to Browser/Server model.It integrate the intelligencesystem,and it provides other interface to start the other system.The target of thesystem is that we can get all the information and control the product of panax andgen-seng of the Jinlin Province by the Internet.The dissertation research on the MVC model,and the MVC stand forModel,View and Controller.The target of MVC model's application is to dividethe clearly function of the web system.The user is get relation to the ControllerComponent by submit the requests,and then do the logic application in theController Component(such as Servlet).After the Model is created,the controllerwill decide to dispatch a view(such as JSP) to user.The model manipulate theview,and the present view data.Before the submit to Controller again ,the viewcould modify the model state.The system was developed by using Strutsarchitecture which is one kinds of the mplement of the MVC model.The system isrun effectively and practicability by testing.And now give the research result asthe following:1.Remote data transmissionThe system implements the download the remote files and also canupload.And accord to the program's need ,implements the system that the Excelfiles can be imported into Mysql Database directly. For the net safety and theconvenience of the experiment data's transmission,we also build a system whichhave the same function but base on the Client/Server model.2.Remote controlThe system implements the interface of remote start the program,remoteshutdown the computer and Restart the computer.And also provide the planschedule,we can remote start the program or shutdown the computer on the settedtime.3.Information sharedThe system implements the information query system.By the fuction,we canlook over the Database's table information and query the information in the tableon the Internet.And you can modiy the table information,such as add a newtable,add fields in the table and delete fields in the table and so on.In the function, we provide the BBS forum for the target of communicationwith each other between the users with management privilege and the commonusers.The system was developed by the JSP technology and Struts architecture.4.the design and the implement of the wireless inspectIn the paper,we research on the WLAN(Wireless LAN) and the remoteinspect,and design a project according the situation of ours lab,greenhouse and thetutor's officee.By set up the equipment such as video server,decode machine,andwirelesss ap and so on,we implements the function that putting the WLAN intothe effectively Extension of the EtherNet,which provided a reference to theremote inspect project.