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Dynamic beam steering for wireless optical power transfer in IoT applications.
Optics Letters
|April 15, 2024
Summary
This study introduces a 2D beam steering mechanism for wireless optical power transfer using resonance beam charging. The new method improves tracking accuracy and speed for charging movable devices in smart factories.
Area of Science:
- Engineering
- Optics
- Wireless Power Transfer
Background:
- Wireless optical power transfer (WOPT) systems using resonance beam charging (RBC) face limitations in receiver alignment and precise device placement.
- Conventional pencil-beam systems require exact positioning, hindering the charging of movable or Internet of Things (IoT) devices.
Purpose of the Study:
- To present a two-dimensional (2D) beam steering mechanism for RBC-based WOPT systems.
- To improve scanning times, reduce errors, and enable consistent charging of movable and IoT devices.
Main Methods:
- Utilized dispersed laser beams for a 2D beam steering mechanism in RBC-based WOPT systems.
- Compared the performance against conventional pencil-beam systems.
Main Results:
- Achieved 14% faster acquisition time efficiency.
- Demonstrated an 18% improvement in pointing accuracy.
- Showcased a 24% enhancement in tracking accuracy.
Conclusions:
- The proposed dispersed beam steering is a viable method for RBC-based WOPT systems.
- This technology enables consistent charging of movable devices and IoT devices in smart factory environments.
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