Ultrasonic_Power_Links - HF.pdf (4.85 MB)
Ultrasonic wireless power links for battery-free condition monitoring in metallic enclosures
journal contribution
posted on 2021-03-11, 12:11 authored by Hailing Fu, Jing Rao, Mohammad S Harb, Stephanos TheodossiadesStephanos TheodossiadesThis paper presented a novel ultrasonic wireless power link (UWPL) to provide power supply for embedded condition monitoring of enclosed metallic
structures, where recharging or replacing batteries can be problematic. Two
piezoelectric transducers are adopted to establish the wireless power links,
within which one transducer is used to generate ultrasonic waves and the
other is to receive the transferred ultrasonic energy and to energize the associated embedded condition monitoring units. A power management solution
is established to regulate the receiver output into a constant voltage suitable
for sensing application. A theoretical model was established to understand
the UWPL dynamics and to analyze the energy budget balance between the
UWPL and the sensing power demands. A finite element model was built
to validate the proposed idea. The UWPL was then experimentally implemented using two piezoelectric transducers and tested in aluminium plates
with different thickness. A power management sub-system was developed
and tested for sensing applications. An output power of 1.73 mW was obtained on a 1.5 kΩ resister with the input voltage of 15 V at 42.6 kHz through
a 6 mm-thick aluminium plate. Sufficient power can be transferred over a
large distance via metallic structures, showing the capability in implementing battery-free condition monitoring of enclosed metallic structures, such as
petroleum pipelines, engines, and aluminium airframe.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
UltrasonicsVolume
114Publisher
Elsevier BVVersion
- AM (Accepted Manuscript)
Rights holder
© ElsevierPublisher statement
This paper was accepted for publication in the journal Ultrasonics and the definitive published version is available at https://doi.org/10.1016/j.ultras.2021.106395Acceptance date
2021-02-09Publication date
2021-03-06Copyright date
2021ISSN
0041-624XPublisher version
Language
- en