ABSTRACT: The Field-bus system is used as the control system of the new generation and is different to traditional model of controlling system from system structure and communication mechanism, what's more, it can solve the problems traditional controlling system left easily because of including the advanced technology of network and communication. Field-bus is well known as a next generation of controlling technology taking the place of DCS.
Based on LON field-bus's technology characteristic, criterion of protocol and intelligent communication, This paper's designing object is automatic reading meter system's and security System’s collection device, and raise whole designed project of all system, on the other hand, achieve hardware circuit design of collecting device, software design of communication and system design of watching and administrating.