基于射频网络的智能家居电能控制系统
2014-03-05于玮谢星邢玉秀陈建新管图华
于玮+谢星+邢玉秀+陈建新+管图华
摘 要: 针对当前智能家居产品价格昂贵导致普及率不高的情况,设计了一种基于射频网络的智能家居电能控制系统。用户可以通过按键触发、短信通知及定时器设置3种方式对插座进行远程控制。当室内发生火灾或燃气泄漏等危险情况时,插座可自行断电,并同时向用户发送短信警报。将室内多个场景测试的误码率结果对比后,得出了遥控器最佳使用区域。实验结果表明,该系统工作稳定、性价比高。
关键词: 智能家居; 短距射频网络; GSM; μC/OS?Ⅱ; 分段线性化
中图分类号: TN911?34; TP872 文献标识码: A 文章编号: 1004?373X(2014)04?0145?04
Electricity control system in smart home based on RF network
YU Wei1, XIE Xing1, XING Yu?xiu2, CHEN Jian?xin3, GUAN Tu?hua1
(1. Engineering Training Center, Nantong University, Nantong 226019, China; 2. Qinggong College, Hebei United University, Tangshan 063000, China;
3. School of Electronics and Information, Nantong University, Nantong 226019, China)
Abstract: In view of the status quo that the popularizing rate of smart home products remains low due to their expensive prices, an electricity control system in smart home based on radio frequency network is proposed in this paper. With the system, users can control the sockets remotely by key triggering, SMS sending and timer setting. The relative socket will turn off the power and send a message as an alarm to a certain user automatically when indoor fire, gas leakage or other dangerous situation occurs. Optimum area using the remote?controller was obtained after comparing results of the bit error rates tested in different indoor regions. The experimental results show that the system is stable in operation and has high performance cost ratio.
Keywords: smart home; short?range radio frequency network; GSM; μC/OS?Ⅱ; piecewise linearization
近年来,物联网技术发展迅速,全社会的信息化水平不断提升。智能家居是物联网的主要应用之一,已成为当前的热门研究领域,也是未来家居生活的发展方向[1]。它能够为用户提供舒适、便利的生活环境。但由于市场上的相关产品大多价格昂贵,普及率依然较低。以往的探索与开发往往停留在对电器设备本身的改造上[2],这种尝试使智能家居产品一度成为奢侈品。本文介绍了一种电能控制系统,作为智能家居的重要组成部分,它在不改动原有电器设备的基础上实现了远程自动控制功能。
1 系统结构
该电能控制系统由遥控器和插座节点组成,其工作原理如图1所示。当用户在家时,通过遥控器以射频方式对插座进行控制。插座节点收到信号后,由微控制器进行解码,并根据得出的结果,对特定编号的插座做通断电处理,从而使与其连接的用电器被启动或者关闭。……
