Title :
Nano-watt power management and vibration sensing on a dust-size batteryless sensor node for ambient intelligence applications
Author :
Shimamura, Tetsuya ; Ugajin, M. ; Suzuki, Kenji ; Ono, Keishi ; Sato, Nobuyoshi ; Kuwabara, Kenta ; Morimura, Hiroki ; Mutoh, S.
Author_Institution :
NTT, Atsugi, Japan
Abstract :
Nano-watt-power circuit techniques that accumulate energy from nanoampere-level currents and continuously sense vibration are used for dust-sized batteryless sensor nodes. A chip is fabricated using a 0.35 ¿m CMOS process. The vibration is sensed with 0.7 nW and the energy is accumulated from a 1 nA current source with voltage monitoring.
Keywords :
CMOS integrated circuits; low-power electronics; CMOS process; ambient intelligence applications; current 1 nA; dust-size batteryless sensor node; nano-watt power management; nano-watt-power circuit technique; power 0.7 nW; size 0.35 mum; vibration sensing; voltage monitoring; Ambient intelligence; Battery management systems; Capacitors; Circuit testing; Diodes; Energy management; Intelligent sensors; MOSFETs; Switches; Threshold voltage;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-6033-5
DOI :
10.1109/ISSCC.2010.5433864
