Title :
Power management circuit for wireless ubiquitous sensor nodes powered by scavenged energy
Author :
Kim, Hak S. ; Kang, Sung-Mo ; Park, Kyung-Joon ; Baek, C.-W. ; Park, Ji-Sub
Author_Institution :
Sch. of Electr. & Electron. Eng., Chung-Ang Univ., Seoul
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.
Keywords :
low-power electronics; wireless sensor networks; RF signal; battery assistance; distance 20 m; low-power electronic design; power management circuit; receiver; scavenged energy; time 5 min; time 8 h; wireless ubiquitous sensor nodes;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.2477
