本文从最底层入手，介绍了自主研发的无线传感器网络（WSNs，Wireless SensorNetworks）节点硬件平台，及软件平台在硬件上的移植。其中，硬件平台采用了分层复用的思想，功能模块齐全；而软件平台选择μC/OS-Ⅱ这个多任务实时微操作系统来管理应用软件。整个平台的硬件和软件融为一体，为WSNs 的应用研究提供了一套有利的开发平台。关键词：无线传感器网络；硬件平台；节点；μC/OS-ⅡAbstract: From the bottom level, this paper presents a platform, integrated with hardware andsoftware, for the research of Wireless Sensor Networks (WSNs), and gives the way to make them compatible with each other. Layer Division Multiplexing (LDM) is designed in our hardware platform which includes complete modules in need; in the other aspect, the real-time kernel μC/OS-Ⅱ is used as software platform to manage the running of application programs. As a whole, it provides a development platform for the application research of WSNs.Key Words：WSNs; hardware platform; node; μC/OS-Ⅱ