Power management circuit for wireless ubiquitous sensor nodes powered by scavenged energy |
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| Authors: | Kim H.S. Kang S.-M. Park K.-J. Baek C.-W. Park J.-S. |
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| Affiliation: | Sch. of Electr. & Electron. Eng., Chung-Ang Univ., Seoul; |
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| Abstract: | Presented is a novel power management circuit for wireless sensor nodes that senses and processes a signal, and transmits an RF signal using scavenged energy without battery assistance. Experimental results show that with a single charging, it is possible for the sensor node to be activated by a wakeup pulse and deactivate itself after transmission of the RF signal to a receiver at a distance of 20 m every 5 min for 8 h without external power. |
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