Year: 2025
Type: article
Abstract: research presents the design, development, and testing of a simultaneous lightwave information and power transfer (SLIPT) system utilizing indoor LED illumination. The proposed system consists of an visible light transmitter and receiver integrated with a microcontroller. The transmitter continuously measures and transmits real-time temperature and humidity data through free-space optical communication, functioning as a node in a wireless sensor network. Meanwhile, the receiver decodes the transmitted data and harvests energy from light using a photodiode and an optical signal reception circuit. Additionally, the receiver is equipped with a solar cell, a BQ25504 power management circuit, and a battery to store harvested energy, ensuring continuous operation. Experimental results demonstrate that the system can successfully transfer temperature and humidity data with a bit error rate of less than 50% at a communication distance of up to 130 cm, with a maximum data rate of 250 bps. Furthermore, the system exhibits strong resistance to ambient light interference. In terms of energy harvesting, the system operates efficiently at distances up to 50 cm under an illumination intensity of at least 1200 lux. Based on these findings, this system can serve as a foundation for future advancements in SLIPT technology, particularly for applications in indoor wireless sensor networks and low-power Internet of Things (IoT) devices that rely on alternative energy sources.
Institution: Rajamangala University of Technology
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7219277643