利用433MHz射频通信技术实现智能家居系统

Implementation of smart home using 433 MHz radio frequency technique

智能家居是当前物联网主要应用之一,当前采用技术主要有ZigBee和Z-Wave技术。然而ZigBee技术由于受功耗限制,穿透力较差,极易受家具或墙壁影响;而Z-Wave虽然能够克服上面问题,但非开放式标准,存在系统兼容性问题。针对上述问题,提出433 MHz无线射频技术实现智能家居系统的解决方案。详细介绍了家庭网络系统架构、通信协议和高效的频带分配算法设计,并给出了可行的解决方法。最终测试结果表明,使用433 MHz射频技术可以很好地解决传输能力和频带资源分配问题,进一步推进智能家居的应用。

The smart home is one of applications in the Internet of Things, and ZigBee and Z-Wave are two main techniques for its implementation. However, ZigBee is constrained by battery-power, which results in weak penetrating, therefore easily affected by the furniture and wall. Z-Wave may combat the above problems, but it is not open, which constrains its wide usage. To solve above problems, the paper proposed an approach for smart home system using 433 MHz Radio Frequency （RF） technology for wireless communication. A detailed description was given about the design of system architecture, communication protocol and a novel bandwidth allocation algorithm. Besides that, a feasible solution was proposed. The final test results show that the wireless communication technology with 433 MHz RF carl efficiently solve the problem of transmission capability and frequency band ＇allocation, which advances the further application of smart home.