基于RS-485总线的智能家居系统

近年来智能家居系统飞速发展,但是大多数功能欠完善,同时成本高昂。针对这种情况,介绍了基于RS-485总线网络,以嵌入式系统作为主设备,传感器接入模块作为从设备的智能家居子网系统,并给出了总体结构图和硬件设计电路图。提出了避免多个接入模块和嵌入式中继系统的串口通信协议和节点通信冲突的方法。最终实现了以PC机为家庭网关的基于RS-485总线的智能家居系统。

Intelligent Home System Based on RS-485 Bus

Intelligent home systems have been dramatically developed in recent years, but most of the functions are incomplete and the systems are expensive. In accordance with this situation, an intelligent home sub-network system is introduced, which is based on RS-485 bus network, with the embedded system as the master device, and the sensor access modules as slave devices. In addition, the general structural diagram and design of hardware circuits are also given. The serial port communication protocol for several access modules and embedded relay system, and the method to avoid collision during node communication are proposed. Thus, the intelligent home system based on RS-485 bus and with PC as the home gateway is accomplished.