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Wearable battery-less wireless sensor network with electromagnetic energy harvesting system
Date
2016-10-01
Author
Chamanian, Salar
Ulusan, Hasan
Zorlu, Ozge
Baghaee, Sajjad
Uysal, Elif
Külah, Haluk
Metadata
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This paper presents a battery-less wireless sensor network (WSN) equipped with electromagnetic (EM) energy harvesters and sensor nodes with adjustable time-interval based on stored the energy. A wearable EM energy harvesting system is developed and optimized to power-up a typical wireless sensor mote from body motion. This is realized through characterization of the body motion and design of a compact EM energy harvester according to vibration frequencies generated during human running and walking. The harvesting system provides self-initiating and regulated supply voltage through rectifying, charging buffer capacitance, and buck DC-DC converter. The proposed system provides maintenance-free operation and adjustment of the sensing-rate according to jogger activity. It is shown that energy-level-based adjustment of the sensing and transmitting time-interval can prolong the lifetime of the battery-less sensor node. It is experimentally demonstrated that the presented WSN measurement nodes provide reliable and long-term operation as attached to human body, proving the feasibility of the system as a wearable battery-less sensor network.
Subject Keywords
Battery-less wireless sensor network
,
Body motion characterization
,
Sensor node lifetime
,
Electromagnetic energy harvester;
URI
https://hdl.handle.net/11511/44065
Journal
SENSORS AND ACTUATORS A-PHYSICAL
DOI
https://doi.org/10.1016/j.sna.2016.07.020
Collections
Department of Electrical and Electronics Engineering, Article
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S. Chamanian, H. Ulusan, O. Zorlu, S. Baghaee, E. Uysal, and H. Külah, “Wearable battery-less wireless sensor network with electromagnetic energy harvesting system,”
SENSORS AND ACTUATORS A-PHYSICAL
, pp. 77–84, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/44065.