A16-a5 - Acoustic Energy Transmission on Mobile Sensors (AEToMS) in Closed (Pipe) Systems
- Event
- 2025 ICU PADERBORN - 9th International Congress on Ultrasonics
2025-09-21 - 2025-09-25
Paderborn - Band
- Lectures
- Chapter
- A16-a - Ultrasonic Signal Processing and Instrumentation
- Author(s)
- M. Simon, F. Grimm, U. Steinmann - Otto-von-Guericke Universität Magdeburg, Magdeburg (Germany)
- Pages
- 122 - 125
- DOI
- 10.5162/Ultrasonic2025/A16-a5
- ISBN
- 978-3-910600-08-9
- Price
- free
Abstract
This paper investigates acoustic energy transmission for wirelessly charging mobile sensors in enclosed systems using focused ultrasound. A test setup with a 32-element ring array and a spherical sensor was used. The sensor was localized using time-of-flight measurements. Two focusing methods (phased array and time reversal) were implemented and experimentally compared. The charging signals were analysed in terms of amplitude and energy. The time-reversal approach achieved better focusing quality and higher energy transfer.