Scalable and small-sized power analyzer design with signal-averaging noise reduction for low-power IoT devices

Ryosuke Kitayama, Takashi Takenaka, Masao Yanagisawa, Nozomu Togawa

研究成果: Conference contribution

抄録

Power analysis for IoT devices is strongly required to reduce power consumption and realize secure communications. In this paper, we propose a scalable and small-sized power analyzer with signal-averaging noise reduction for low-power IoT devices. The proposed power analyzer reduces a wide frequency range of noises by using a signal averaging method and is implemented on just a 2cmx3cm board, which is the smallest size among the other existing power analyzers for IoT devices. It further has the following advantages: (a) It has a two-level amplifier that amplifies current signals adaptively depending on their magnitude. Hence maximum readable current can be increased with keeping minimum readable current small enough. (b) If long-time analysis is required, it can be partitioned into several analysis segments. The proposed power analyzer can measure currents and voltages of each analysis segment by using a small amount of data memories. After that, by combining these analysis segments using a timer module, we can obtain long-time analysis results. We have analyzed power and energy consumption of encryption processes of AES block cipher on the IoT device and demonstrated that the proposed power analyzer has only 1.8% measurement error compared with a high-precision oscilloscope.

本文言語English
ホスト出版物のタイトルISCAS 2016 - IEEE International Symposium on Circuits and Systems
出版社Institute of Electrical and Electronics Engineers Inc.
ページ978-981
ページ数4
ISBN(電子版)9781479953400
DOI
出版ステータスPublished - 2016 7 29
イベント2016 IEEE International Symposium on Circuits and Systems, ISCAS 2016 - Montreal, Canada
継続期間: 2016 5 222016 5 25

出版物シリーズ

名前Proceedings - IEEE International Symposium on Circuits and Systems
2016-July
ISSN(印刷版)0271-4310

Other

Other2016 IEEE International Symposium on Circuits and Systems, ISCAS 2016
CountryCanada
CityMontreal
Period16/5/2216/5/25

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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