基于RS485网络的户型中央空调控制系统

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.

Door type central air-condition based on RS485 communication network

For the purpose of auto control that carries out central air conditi on host and breeze machine dish tube,the paper designed a kind of door type cen tral air-condition control system based on the RS485 communication network.The system adopted a controller with single-chip microcomputer for core,carried o ut 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 tra ditional communication of RS232,the RS485 has characteristics of the communicat ion distance far and high band rate,and it suits to constitute a dotty communic ation network particularly.Compared with other field-bus,the cost of RS485 is very cheap,and easier to carry out.