Telecommunications Science ›› 2023, Vol. 39 ›› Issue (5): 20-27.doi: 10.11959/j.issn.1000-0801.2023102

• Topic: Visible Light Communication • Previous Articles     Next Articles

Zero power light labeling based on visible light communication

Tianyang MA1,2, Xiongbin CHEN1,3, Yiwu XU1,2   

  1. 1 Key Laboratory of Opto-Electronic Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
    2 College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 100049, China
    3 School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 101408, China
  • Revised:2023-05-07 Online:2023-05-20 Published:2023-05-01
  • Supported by:
    The National Natural Science Foundation of China(61875183)

Abstract:

In order to achieve zero energy consumption of visible light labels, MATLAB and MULTISIM were used to simulate the impedance matching of the receiver, matching the input impedance of the first-order equalization circuit with the internal resistance of solar panel, while expanding the system bandwidth and ensuring the highest output power of the solar panel.The simulation results show that the output power of the solar panel is increased by 86.2% when the input impedance of the equalization circuit matches solar panel, compared to the common 50 ?.The prototype system of zero-energy optical label of visible light was built.A 15 W LED lamp was used to send characters at 115 200 Baud, and a cadmium telluride solar panel was used to collect energy and receive signals at a distance of 1.3 m.Low-power microcontroller was used to recover data through ADC and computation, and OLED screens were used to display the received label characters.The signal reception, processing computing, and screen display energy of the receiver were all provided by solar panel, without the need for batteries or external power supply.The visible light label display service with zero energy consumption has been implemented.

Key words: IoT, zero power, visible light communication

CLC Number: 

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