面向智能家居和改进UDP协议的低能耗物联网网关设计

为了实现智能家居安防系统的监测需求,并解决以往监控系统中网关存在的丢包率高、可靠性低和能耗高的问题,设计了一种基于改进UDP协议的物联网网关。首先,设计了以S3C2410为微控制器、DM9000为以太网芯片、EC189为3G模块和XBEE ZNET为无线通信模块的网关节点,然后,定义了MAC层的改进的T-MAC通信协议和对应的数据帧格式,在网络层设计了一种基于改进LEACH协议的低功耗分簇路由协议,在数据传输层定义了基于改进UDP的协议以实现数据的可靠传输,并定义了网关的软件流程。实验结果证明设计的网关能实现协议之间的转换,具有数据丢包率低、可靠性高和能耗低的优点,能辅助系统实现室内数据的实时采集和监控,并在数据异常时进行报警提示。

Design of Internet of Things Gateway Based on Improved UDP Protocol and Intelligent Home Security and Defense

In order to realize the monitoring demand of the system of intelligent home security and defense, and solve the traditional monitoring system existed the problems such as high drop data packet, low reliability and high energy consumption, an internet of things gateway based on improved UDP protocol was designed. Firstly, the hardware of the gateway was designed, it use the S3C2410 as the control center, DM9000 as the Ethernet model, EC189 as the 3G model, XBEE ZNET as the RF model, then the improved T-MAC protocol was defined as the MAC protocol, the improved Leach protocol was designed as the network routing protocol, in the data transport layer, the improved UDP protocol was defined to realize the data transportation, the software flow for gateway was also given. The simulation experiment shows the gateway designed in this paper can realize the transform of different protocols, has the advantages of low dropping data rate, high reliability and low energy consumption, and it can support the whole system to collect data and monitor the home, and do alarm when the parameter having error.