中文摘要：

本文设计并实现了低功耗无线传感器网络节点．首先分析比较了现有的各种节点设计方案，选取低功耗芯片，设计了基于MSP430F149处理器和nRF24L01＋无线收发芯片的低功耗节点设计方案，并提出了低功耗能量管理策略，最后对节点的能量消耗进行了仔细测试和分析．实验结果表明，提出的节点设计方案和能量管理策略能够实现节点的低功耗工作．

英文摘要：

In this paper, we design and implement a low-power wireless sensor network node. Firstly, by analyzing and comparing a variety of exiting node design, we select low-power chips, and propose a low-power node design based on the MSP430F149 processor and nRF24L01 q-wireless transceiver chip. Then, we describe the system software design. Finally, we test and analyze the energy consumption of the node carefully. The results show that the proposed node design and energy management strategies can achieve low power consumption of the node.