被动远程触发无线传感器节点的活动周期:一种使节点能量使用适应应用的方法

2007 International Conference on Sensor Technologies and Applications (SENSORCOMM 2007) Pub Date : 2007-10-14 DOI:10.1109/SENSORCOMM.2007.78

C. Gonzalez, J. Jiménez-Leube

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引用次数: 1

摘要

提出了一种用于超低功耗无线传感器器件的无源近距离遥控触发工作方式。当检测到触发信号或编码序列时，节点从休眠模式启用，为了节省能量，节点保持待机状态。接收到触发命令后，节点启动其耗能元素。所研究的触发方案基于无源电路，允许在待机模式下超低功耗运行。触发检测器由两个基本元件组成:一个无源调谐滤波器和一个将触发信号转换为基带的有源检测器。电路的有源部分是一个低功率比较器，当它切换输出时唤醒节点的微控制器单元。提出了两种触发方案:(a)低频(LF-125 kHz)近场通信(NFC)链路和(b)射频(868 MHz ISM频段)链路。

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Passive Remote Triggering the Activity Cycle of a Wireless Sensor Node: A Method to Adapt the Use of Energy of the Node to the Application

A passive short-range remote triggered mode of operation for ultra-low power wireless sensor devices is proposed. When a triggering signal or coded sequence is detected, the node is enabled from sleep mode, which it is kept on standby in order to save energy. After a trigger command is received, the node turns on its power-consuming elements. The triggering schemes studied are based on passive circuits that allow ultra-low power operation in standby mode. The trigger detector is made up of two basic elements: a passive tuned filter and an active detector that converts the trigger signal to baseband. The active part of the circuit is a low power comparator that awakens the microcontroller unit of the node when it toggles its output. Two trigger schemes are presented: (a) a low frequency (LF-125 kHz) near field communications (NFC) link and (b) a RF frequency (868 MHz ISM band) link.

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2007 International Conference on Sensor Technologies and Applications (SENSORCOMM 2007)

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