https://scholars.lib.ntu.edu.tw/handle/123456789/489865
標題: | Autonomous I/O for Intermittent IoT Systems | 作者: | Lin, Y.-C. Hsiu, P.-C. TEI-WEI KUO |
公開日期: | 2019 | 卷: | 2019-July | 來源出版物: | Proceedings of the International Symposium on Low Power Electronics and Design | 摘要: | Self-powered intermittent systems waste considerable I/O energy because volatile I/O modules repeatedly issue identical operations under power failure conditions, and also due to the use of the inefficient I/O stack originally developed for battery-powered systems. This paper presents the concept, design, and implementation of autonomous I/O, which can accumulatively and transparently complete I/O operations regardless of power stability. We define its two essential functionalities, separate the general I/O stack to make accumulatively-completed I/O operations transparent to application tasks, and propose an access protocol that allows for energy efficiency and compatibility with the general I/O stack. To evaluate the efficacy, we implement our design and conduct extensive experiments on a Texas Instruments device with commodity sensor and Wi-Fi modules. Experimental results show that autonomous I/O can achieve 1.8 times the throughout achieved with nonvolatile I/O when the power is relatively steady, while reducing the completion time of individual I/O operations by at least 34% with relatively unstable power. © 2019 IEEE. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/489865 | DOI: | 10.1109/ISLPED.2019.8824923 | SDG/關鍵字: | Energy efficiency; Energy harvesting; Low power electronics; Access protocols; Application tasks; Battery-powered systems; Completion time; Intermittent systems; Non-volatile; Power stability; Texas Instruments; Internet of things |
顯示於: | 資訊工程學系 |
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