Bdiri Sadok, Derbel Faouzi, Kanoun Olfa
Department of Electrical Engineering and Information Technology, Leipzig University of Applied Sciences, Wächter Street 13, 04107 Leipzig, Germany.
Department of Electrical Engineering and Information Technology, Chemnitz University of Technology, Reichenhainer Street 70, 09126 Chemnitz, Germany.
Sensors (Basel). 2017 Dec 29;18(1):86. doi: 10.3390/s18010086.
A novel wake-up receiver for wireless sensor networks is introduced. It operates with a modified medium access protocol (MAC), allowing low-energy consumption and practical latency. The ultra-low-power wake-up receiver operates with enhanced duty-cycled listening. The analysis of energy models of the duty-cycle-based communication is presented. All the WuRx blocks are studied to obey the duty-cycle operation. For a mean interval time for the data exchange cycle between a transmitter and a receiver over 1.7 s and a 64-bit wake-up packet detection latency of 32 ms, the average power consumption of the wake-up receiver (WuRx) reaches down to 3 μ W . It also features scalable addressing of more than 512 bit at a data rate of 128 k bit / s . At a wake-up packet error rate of 10 - 2 , the detection sensitivity reaches a minimum of - 90 dBm . The combination of the MAC protocol and the WuRx eases the adoption of different kinds of wireless sensor networks. In low traffic communication, the WuRx dramatically saves more energy than that of a network that is implementing conventional duty-cycling. In this work, a prototype was realized to evaluate the intended performance.
本文介绍了一种用于无线传感器网络的新型唤醒接收器。它采用了一种改进的介质访问协议（MAC）运行，具有低能耗和实际延迟的特点。该超低功耗唤醒接收器通过增强的占空比监听来运行。文中给出了基于占空比通信的能量模型分析。对所有唤醒接收器（WuRx）模块进行了研究，以使其符合占空比操作。对于发射器和接收器之间数据交换周期的平均间隔时间超过1.7秒且64位唤醒数据包检测延迟为32毫秒的情况，唤醒接收器（WuRx）的平均功耗降至3微瓦。它还具有在128千比特/秒的数据速率下超过512位的可扩展寻址功能。在唤醒数据包错误率为10⁻²时，检测灵敏度最低可达 - 90 dBm。MAC协议和WuRx的结合便于采用不同类型的无线传感器网络。在低流量通信中，WuRx比实施传统占空比的网络显著节省更多能量。在这项工作中，实现了一个原型来评估预期性能。
