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首页> 外文会议>2013 ACM/IEEE International Conference on Information Processing in Sensor Networks >Nemo: A high-fidelity noninvasive power meter system for wireless sensor networks
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Nemo: A high-fidelity noninvasive power meter system for wireless sensor networks

机译：Nemo：用于无线传感器网络的高保真无创功率计系统

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In this paper, we present the design and implementation of Nemo - a practical in situ power metering system for wireless sensor networks. Nemo features a new circuit design called shunt resistor switch that can dynamically adjust the resistance of shunt resistors based on the current load. This allows Nemo to achieve a wide dynamic current range and high measurement accuracy. Nemo transmits real-time power measurements to the host node solely through the power line, by modulating the current load and the supply voltage. This feature leads to a noninvasive, plug & play design that allows Nemo to be easily installed on existing mote platforms without physical wiring or soldering. We have implemented a prototype of Nemo and conducted extensive experimental evaluation. Our results show that Nemo can transmit high-throughput measurement data to the host through voltage/current load modulation. Moreover, it has satisfactory measurement fidelity over a wide range of operating conditions. In particular, Nemo yields a dynamic measurement range of 250,000∶1, which is 2.5X and 7X that of two state-of-the-art sensor network power meter systems, while only incurring an average measurement error of 1.34%. We also use a case study to demonstrate that Nemo is able to track the highly dynamic sleep current consumption of TelosB motes, which has important implications for the design of low duty-cycle sensor networks that operate in dynamic environments.
机译：在本文中，我们介绍了Nemo的设计和实现-Nemo是一种用于无线传感器网络的实用的原位电表系统。 Nemo具有一种称为分流电阻器开关的新电路设计，该电路设计可以根据当前负载动态调整分流电阻器的电阻。这使Nemo可以实现宽动态电流范围和高测量精度。 Nemo通过调制电流负载和电源电压，仅通过电源线将实时功率测量结果传输到主机节点。此功能导致了一种无创的即插即用设计，使Nemo可以轻松安装在现有的Mote平台上，而无需进行物理布线或焊接。我们已经实现了Nemo的原型并进行了广泛的实验评估。我们的结果表明，Nemo可以通过电压/电流负载调制将高吞吐量的测量数据传输到主机。此外，它在广泛的工作条件下具有令人满意的测量保真度。特别是，Nemo产生的动态测量范围为250,0001：1，是两个最新的传感器网络功率计系统的动态测量范围的2.5倍和7倍，而平均测量误差仅为1.34％。我们还使用一个案例研究来证明Nemo能够跟踪TelosB微粒的高动态睡眠电流消耗，这对于在动态环境中运行的低占空比传感器网络的设计具有重要意义。

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