Research On Constructing Technology Of The Intelligent Fuzzy Monitor And Control System Of Upper Computer Based On LonWorks Networks

LonWorks is a local bus and is used in the control field widely. LNS Server and LNS Data Server provide Lon Works' serves, to design and build Lon Works networks control system use the tools, such as LonMaker, Nodebuilder etc..Lon Works uses LonTalk protocol and CSMA communicate. The networks are drove by events and may use networks variable exchange information.According to the station of upper computer, Lon Works networks were compartmentalized for two types. One is the LonWorks network that is monitored and controlled in the local computer; the other is the LonWorks network that is monitored and controlled in the remote computer. In the LonWorks networks that is monitored and controlled in the remote computer, there are two types connection form between the upper computer and the LonWorks networks - through modem and Internet Because the connection form of LonWorks networks is different, the software modes of upper computer of LonWorks networks were compartmentalized for three corresponding types. PC mode, C/S mode and B/S mode.Fuzzy monitor and control system of the upper computer based on LonWorks networks is a self-suiting monitor and control system that is formed of the software controller. This paper introduces the techniques that built it. It put forward the three supper computer software modes interrelate to the three connection forms of LonWorks networks, and discuss a model digging arithmetic-the combining model digging arithmetic. We modify the value range of fuzzy sub-collection through changing fuzzy control parameters and associate parameters. Its fuzzy value isn't changed. Subject function of every fuzzy sub-collection only is related with fuzzy value and isn't related with the fuzzy value area. The fuzzy inferential rules are independent. So, it is predigested to modify knowledge database for only modifying control parameters and associate parameters. And it realizes the purpose that is self-suiting and the control is optimized. In the software structure, self-suiting components and control components are separated. The knowledge database isn't changed and it doesn't affect the result that control components deduce when the self-suiting components are digging data. Finishing a digging data and modifying knowledge database, the new knowledge database is effective. Then the self-suiting process and the fuzzy control process are independent. In the control process, the messages that the control components produce are stored in the control database. It spring to alter the states of the performing components that data in the control database control are changed. It doesn't affect the performing components that the controlcomponents deduce. The fuzzy deducing process and the performing control process is independent.Although we use the separating technology to build the software and to reduce the control delay, the intelligent fuzzy monitor and control system based on LonWorks networks in the upper computer deduce and calculate to produce delay. Especially, communication would spend time and increase delay in the C/S model and the B/S model. Therefore, it only is applicable to the control system that there is delay.