基于Wi-Fi模块的无线传感器节点设计  

Wireless sensor nodes design based on Wi-Fi module

作　　者：顾树威[1] 别红霞[1] 

机构地区：[1]北京邮电大学信息与通信工程学院,北京100876

出　　处：《软件》2013年第1期60-63,共4页Software

摘　　要：无线传感网络是由大量的具有感知能力和通信能力的无线传感器节点组成。无线传感器的通信能力对整个网络的性能至关重要。现有的无线传感器通信设备广泛采用的是低功耗、低速率的ZigBee设备,这能够很好地满足大部分的应用要求。但是当节点数据量很大时,ZigBee设备较低的数据传输速率将会成为整个无线传感网络的性能瓶颈。为了提高无线传感网络的数据传输能力,本文介绍了一种基于SPI接口的低功耗Wi-Fi无线模块在Linux嵌入式操作系统下的驱动移植和设备加载方法;设计出一套流量控制协议解决了SPI接口的缺少传输流控的问题;并成功搭建一个无线传感网络,进行无线自组网测试。The wireless sensor network consists of a large number of wireless sensor nodes with the ability of sensing and communicating. The communication capability of wireless sensor is of great importance to the performance of the network. Existing wireless sensor communications equipment is widely adopted low-power, low-rate ZigBee devices, which are able to meet the demand of most applications. However, when there is a large amount of data, ZigBee devices with low data transmission rate will hinder the performance of the whole wireless sensor network. In order to improve the data transmission capability of the network, the paper introduces the transplant and load methods of low-power Wi-Fi wireless module with SPI interface which running in Linux embedded operating system. In the paper, a set of protocol of traffic control is designed to solve the problem of lacking in this ability on SPI interface. Then a wireless sensor network is successfully built and Ad hoc network is being tested.

关 键 词：计算机技术 流量控制协议 SPI设备驱动 LINUX嵌入式操作系统 

分 类 号：TP332[自动化与计算机技术—计算机系统结构]