TY - JOUR
T1 - Event Driven Time-logging System based on Continuous Operation of Real Time Clock towards Perpetual Electronics
AU - Yamada, S.
AU - Toshiyoshi, H.
N1 - Funding Information:
This work was supported by JST CREST Grant Number JPMJCR15Q4, the grant funding from the Tateishi Science and Technology Foundation and LIXIL Foundation.
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2019/12/4
Y1 - 2019/12/4
N2 - This paper presents a novel time logging system using a real time clock (RTC) powered by a vibrational energy harvester to record the time of events when piezoelectric PVDF film as an event-driven sensor is activated. The power-management circuit normally remains in the sleep mode to cut power supply to the micro-processor and the ferroelectric random access memory. On the other hand, the RTC alone is powered by a battery to keep the time by seamless operation, which lowers the standby power consumption as small as 231 nW. As the PVDF film generates power, the developed power management circuit can supply load current upwards of 8 mA at 3.3 Vdc for external circuit to record the time of events with the energy consumption of 467 μJ.
AB - This paper presents a novel time logging system using a real time clock (RTC) powered by a vibrational energy harvester to record the time of events when piezoelectric PVDF film as an event-driven sensor is activated. The power-management circuit normally remains in the sleep mode to cut power supply to the micro-processor and the ferroelectric random access memory. On the other hand, the RTC alone is powered by a battery to keep the time by seamless operation, which lowers the standby power consumption as small as 231 nW. As the PVDF film generates power, the developed power management circuit can supply load current upwards of 8 mA at 3.3 Vdc for external circuit to record the time of events with the energy consumption of 467 μJ.
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U2 - 10.1088/1742-6596/1407/1/012045
DO - 10.1088/1742-6596/1407/1/012045
M3 - Conference article
AN - SCOPUS:85077810606
SN - 1742-6588
VL - 1407
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012045
T2 - 18th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, PowerMEMS 2018
Y2 - 4 December 2018 through 7 December 2018
ER -
