基于RF的智能家居无线通信网络架构设计

Design of RF-based wireless communication network architecture for smart home

随着智能家居的发展,智能管控需求大幅提升,有线网关已经无法满足功能需求。针对此问题,基于433 MHz频段的无线RF通信网络模块,设计一种适用于家庭网络的关联、管理系统。用搭载RF无线模块的智能终端通过内置Wi Fi模块发射控制信息或状态查询指令,通过服务器验证RF通信协议中的数据帧;采用PIC16F726单片机及SPI串行接口构成触发模块,以验证和筛选各类指令;采用高集成度、频率自调的Si4421型号单晶射频芯片来降低大型网络下服务器的负载,服务器再将处理、整合后的信息发送给指定设备终端,从而实现高效、全面的无线智能家居。

With the development of modern intelligent home, the intelligent control demand has increased sharply, and the cable gateway has been unable to meet its functional requirements. In this situation, the RF wireless communication network module based on 433 MHz band was designed, which is suitable for association management system of home network. The intelligent terminal with RF wireless module transmits control information or status query commands through the buih-in WiFi module and verifies the data frame in the RF communication protocol through server. PIC16F726 MCU and SPI serial interface are adopted to make up the trigger module to verify and screen various types of instructions. Si4421 model single crystal RF chip with high integration degree and frequency self-regulation is used to reduce the server load of large-scale networks. The server then sends the processed and integrated information to the designated equipment terminal, so as to achieve efficient and comprehensive wireless smart home.