南京大学学报(自然科学版) ›› 2012, Vol. 48 ›› Issue (1): 26–32.

• • 上一篇    下一篇

 基于物联网技术的智能家居系统*

 严萍,张兴敢**,柏业超,杜仲林   

  • 出版日期:2015-05-19 发布日期:2015-05-19
  • 作者简介: (南京大学电子科学与工程学院,南京,210093)
  • 基金资助:

    江苏省自然科学基金(BK2011562)

 Smart home based on Internet of things

 Yan Ping,Zhang Xing Gan,Bai Ye-Chao,Du Zhong一Lin
  

  • Online:2015-05-19 Published:2015-05-19
  • About author: (School of Electronic Science and Engineering, Nanjing University, Nanjing, 210093,China)

摘要: 本文结合物联网思想和多种无线传输技术设计了一种多功能智能家居系统.设计的系统由感知层、网络层和应用层三部分组成.感知层设备包括智能门禁、环境参数检测和家电控制,该层各设备均
支持Gigbee协议通信.网络层包括Gigbee网络、控制终端和全球移动通讯系统/通用分组无线服务网络.控制终端与前端感知设备之间通过星型拓扑结构的Gigbee网络通信,前者作为协调器,后者作为普
通半功能节点.应用层通过手机和全球移动通讯系统网络实现与用户的交互.当感知层设备检测到出现异常时,会通过Gigbee网络将异常信息发送至控制终端,终端再通过全球移动通讯系统网络将信息发
送至用户手机.用户也可向控制终端发送短消息以实现对家电或安防设备的远程操作.由于全部采用无线通信,且全球移动通讯系统网络是我国覆盖面最广、最稳定的无线公网,因此本系统的安装为一便、无需
布线,即使在偏远地区同样能提供可靠服务.

Abstract:  Smart home system is now widely used in our houses, offices and etc. but those existing products are mostly wired,which causes inconvenient installation and high cost.Therefore we propose a wireless smart home
system based on Internet of things,which aims at expanding the range of network users from people to things,eventually making the automatic process of information transmission among things come true. In other words,
things could communicate automatically. Our smart home system has a thre-layer structure, which includes front end sensor layer, network layer and user service layer.The sensor layer consists of entrance guard,cnvmonmcnt
monitors and household-appliance controllers, all these devices support ZigBec communication protocol. Houschold- appliance controllers arc integrated into according remote controllers, in order not to modify appliance itself.The
network layer consists of EEE802. 15.4 (ZigBee),a control terminal and global system for mobile communications (GSM)/general packet radio service(GPRS).Control terminal is in charge of information gathering and
distribution. A secure digital memory card is used to record every single event. The front end sensors connect to the control terminal over ZigBec network in a star topology.The terminal plays the role of coordinator, which is a full-
function device. And all the front end sensors arc normal reduced-function devices. Wireless ranscciver is performed by JN5139,which is a low power, low cost wireless microcontroller suitable for ZigBec.The user service layer
provides human-device interactions.Tcrminal controller supports bidirectional communication with users over GSM/ GPRS by integrating Sicmens MC35i module,which is a supper slim dual-band GSM communication module; it
supports standard attention command set. Records could be checked by using keyboard and liquid crystal display of terminal.The whole smart home system functions in this way; once front end sensors detect anything unusual,they
would notify the control terminal immediately over ZigBec network. After receiving a notification, the control terminal would parse it,and send a text or multimedia message to user’s cell phone over GSM/GPRS network if
necessary, In the opposite direction, if user wants to control a household appliance, the only thing he needs to do is to send a formatted text message to control terminal. After receiving and parsing the message,the control terminal
understands user’s intention correctly.Then terminal would send commands to corresponding household-appliance controller over ZigBec network. All communications in our smart home system are wireless,so there’re no wires
needed during installation. Human-device interactions arc mostly done over the GSM network, which has the widest coverage in this country. This makes sure our system is able to provide higlrquality service even in some remote regions.

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