基于以太网和CAN总线的楼宇自动化系统设计

Design of building's control system based on Ethernet and CAN

提出了一种使用以太网技术和CAN技术实现楼宇自动化的方案,并给出了软硬件的具体实现办法。该方案由主控计算机、以太网通讯节点以及现场CAN节点构成一个分层网络控制系统,其中以太网节点由路由器和嵌入了TCP/IP协议栈的嵌入式系统构成,现场CAN节点由单片机、AD/DA转换模块、CAN模块、传感器及执行机构组成。系统具有容错性好、实时性高,管理方便等优势,可实现智能遥控,故障发现,集中管理等功能。

BAS （Building automation system） is a system which gives control to all the public electronic-machine that belongs to the building, such as center air-condition system, water system, electric system, lighting system, lift-up system etc. this paper gives a solution which use Ethernet and CAN to achieve the BAS. Using main control computer, Ethernet communication node and CAN control node to build a Net-based control system. The Ethernet node consists of Router and Embedded system working with TCP/IP. The CAN node consists of single-chip system, AD/DA module, CAN control module, sensor and electromotor. Every node can communicate with main control computer. The whole system will be control flexible, and the malfunction will be find out immediately.