Study on Key Technologies and Software Design of BACnet Router

BACnet (Building Automation and Control networks) is a standard data communication protocol for building automation and control systems. The purpose of the BACnet network layer is to provide the means by which messages can be transmitted from one BACnet network to another regardless of the BACnet data link technology in use on that network. BACnet routers are devices that interconnect two or more BACnet networks to form a BACnet internet work and route messages between BACnet networks. In this study, the authors analyze the key technologies of BACnet router, propose a new algorithm named PRED to solve the congestion control problem of BACnet router and a software design program to put BACnet router into practice.