摘 要
物联网是在互联网概念的基础上提出的，积极发展物联网技术，尽快扩展其应用领域，尽快使其投入到生产、生活中去，将具有重要意义。而物联网网关可以实现感知网络与通信网络以及不同类型感知网络之间的协议转换，既可以实现广域互联，也可以实现局域互联。
物联网无线网关的研究及组网实现，是在构建整个物联网体系结构中至关重要的一步。网关是建立在网络层之上的协议转换器，而嵌入式系统具有专用性强、实时性好、可靠性高、功耗少、体积小和低成本的特点，因此用无线网关极大增加了应用的灵活性并降低了成本。通过网关把MC509网络同因特网连接起来，在各个角落都可以对某个MC509网络中的设备进行监测和控制，大大缩小了物理世界的时空距离。
本文首先提出了一种基于ARM微处理器的无线网关总体设计方案，设计出的网关具有功耗底、体积小、设计简单又可以满足小数据量信息传输的特点。然后以奥尔斯物联网创新实验系统IOV-T-2530为平台，模拟了无线网关多点数据采集并完成了MC509网络与互联网的通信，从而实现了无线网关在物联网中的应用。
关键词：物联网；嵌入式系统；MC509；网关；
ABSTRACT
The Internet of things is put forward on the basis of the concept of Internet of things. It will be of great significance to actively develop the technology of Internet of things, expand its application field as soon as possible, and put it into production and life as soon as possible. The Internet of things gateway can realize protocol conversion between perceptual network, communication network and different types of perceptual network, which can not only realize wide area interconnection, but also realize local area interconnection.
The research and implementation of Internet of things wireless gateway is a very important step in constructing the whole Internet of things architecture. Gateway is a protocol converter built on the network layer, and embedded system has the characteristics of strong specificity, good real-time, high reliability, low power consumption, small volume and low cost. Therefore, the use of wireless gateways greatly increases the flexibility of the application and reduces the cost. The MC509 network is connected to the Internet through the gateway, which can monitor and control the devices in a certain MC509 network in every corner, which greatly reduces the space-time distance of the physical world.
In this paper, a general design scheme of wireless gateway based on ARM microprocessor is proposed. The designed gateway has the advantages of low power consumption, small volume, simple design and can satisfy the characteristics of small amount of data information transmission. Based on IOV-T-2530, a wireless gateway multi-point data acquisition is simulated and the communication between MC509 network and Internet is completed. The application of wireless gateway in Internet of things is realized.
Keywords: Internet of things; embedded system MC509; Gateway;
