【摘要】 无线传感网具有资源受限、硬件和应用多样等特性,使得传感网的应用开发和部署比较困难。这就要求研制一种提供适当抽象层的中间件架构,简化应用开发,并支持在资源受限的情况下,快速将应用部署到无线传感网节点。本文设计并实现了一种面向无线传感网的新型中间件架构。本架构采用基于可执行可链接格式(ELF文件格式)的动态链接加载更新技术,支持中间件动态加载与链接、部署、激活、停用、卸载和相互调用等功能。实验结果表明,本架构代码体积较小,可用于资源受限的传感网节点,明显降低了代码更新时产生的网络传输量,并且可以实现更加灵活的应用和中间件服务部署方案。更多还原

【Abstract】 WSNs are typically resource limited and hardware and applications diversely involved,which makes it very difficult to develop and deploy WSN applications.This requires development of a middleware framework as an abstract layer in order to simplify application development and support fast deployment of application software to WSN nodes.This paper designed and realized a new middleware framework for WSN,which adopted the executable linkable format(i.e.,ELF file format)based dynamic linking and loading technology and supported dynamic loading and linking,deployment,activation,suspension,uninstallation and inter-invoking.Experiment results show that compared with other operations,the desingned framework has smaller code sizes,enables deployment to WSN nodes with limited resources,significantly reduces the amount of codes to be updated and supports flexible applications and middleware services.更多还原