基于RS485网络的户型中央空调控制系统

Door type central air-condition based on RS485 communication network

为了实现中央空调主机与风机盘管的自动控制,设计了一种基于RS485通信网络的户型中央空调控制系统.该系统采用以单片机为核心的控制器,实现对空调主机和风机盘管的自动控制,并可以通过R S485网络实现整个户型中央空调系统的无人管理和节能运行.与传统的R S232通信相比,R S485具有通信距离远、传输速率高的特点,尤其适合组成一个多点的通信网络;与其他一些现场总线相比,R S485成本低廉,实现更容易.

For the purpose of auto control that carries out central air condition host and breeze machine dish tube, the paper designed a kind of door type central air-condition control system based on the RS485 communication network. The system adopted a controller with single-chip microcomputer for core, carried out the auto control of the air condition host and the breeze machine dish tube, and could carry out unmanned management and economize on energy use of the whole central air-condition system through the RS485 networks. Compared with the traditional communication of RS232, the RS485 has characteristics of the communication distance far and high band rate, and it suits to constitute a dotty communication network particularly. Compared with other field-bus, the cost of RS485 is very cheap, and easier to carry out.