WSN Timer Resolution Adjustment Based on UKF Approach

Hao HE; Weidong YI; Yongrui CHEN; Zhe WANG

doi:10.11999/JEIT171049

Volume 41 Issue 3

Mar. 2019

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Article Navigation > Journal of Electronics & Information Technology > 2019 > 41(3): 687-693

Hao HE, Weidong YI, Yongrui CHEN, Zhe WANG. WSN Timer Resolution Adjustment Based on UKF Approach[J]. Journal of Electronics & Information Technology, 2019, 41(3): 687-693. doi: 10.11999/JEIT171049

Citation:

Hao HE, Weidong YI, Yongrui CHEN, Zhe WANG. WSN Timer Resolution Adjustment Based on UKF Approach[J]. Journal of Electronics & Information Technology, 2019, 41(3): 687-693. doi: 10.11999/JEIT171049

Hao HE, Weidong YI, Yongrui CHEN, Zhe WANG. WSN Timer Resolution Adjustment Based on UKF Approach[J]. Journal of Electronics & Information Technology, 2019, 41(3): 687-693. doi: 10.11999/JEIT171049

Citation:

Hao HE, Weidong YI, Yongrui CHEN, Zhe WANG. WSN Timer Resolution Adjustment Based on UKF Approach[J]. Journal of Electronics & Information Technology, 2019, 41(3): 687-693. doi: 10.11999/JEIT171049

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WSN Timer Resolution Adjustment Based on UKF Approach

doi: 10.11999/JEIT171049

School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100041, China

Funds: The National Science and Technology Support Program (Y2140161A5), The National 863 Program of China (O812041A04)

Received Date: 2017-11-13
Rev Recd Date: 2018-12-19

Available Online: 2018-12-24

Publish Date: 2019-03-01

Abstract

Abstract

During the radio-off periods of Wireless Sensor Network (WSN) node, the timer Interrupt ReQuest (IRQ) which used to maintain the system clock become an important energy consumption source of Micro Controller Unit (MCU), thus the IRQ frequency has a great influence on WSN node total energy consumption. A timer resolution adjustment method based on Unscented Kalman Filter (UKF) approach is proposed, which switches high and low IRQ frequencies according to the characteristics of the protocol. Being at a low frequency during sleep period, if a node needs to switch to wake-up period, it will first obtain the optimal estimation of the start time of high resolution timing period by UKF, then enter the high resolution timing period after a linear combination of a group of gradual-changing resolution timer IRQ. The simulations of ContikiMAC protocol on the Tmote platform are conducted. When the Radio Duty Cycle (RDC) is 0.53%, the proposed method reduces the total power consumption by 28.85% compared to the original protocol.
- Wireless Sensor Network (WSN),
- Radio Duty Cycle (RDC),
- Timer Interrupt ReQuest (IRQ),
- Energy conservation,
- Unscented Kalman Filter (UKF)

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References(23)

References

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