A visible light communication device and method for Ethernet data transmission

Abstract

The present invention provides a visible light communication device and method for Ethernet data transmission, including a sending module and a receiving module; the sending module includes a first PHY chip, a first network port transceiver module, a valid data separation module, a memory, Data segment packaging verification module, first OOK modulation module, first OOK demodulation module, request packet judgment module, error retransmission judgment module, first LED sending module, first photoelectric detector; the receiving module includes A second PHY chip, a second OOK demodulation module, a second OOK modulation module, a data verification module, a second network port transceiver module, a second photodetector, and a second LED sending module. The present invention solves the problem that the existing visible light communication device of the Ethernet interface cannot transmit data stably and reliably in a wireless channel with high bit error. Stable and reliable data transmission in the channel.

Description

technical field [0001] The present invention relates to the technical field of data transmission, in particular to a visible light communication device and method for Ethernet data transmission. Background technique [0002] Visible light wireless communication technology uses visible light to realize wireless communication, that is, uses electrical signals to control light-emitting diodes (LEDs) to send out high-speed flashing signals invisible to the naked eye to transmit information. Compared with traditional technologies, visible light communication has the advantages of available frequency bandwidth, high security, no electromagnetic interference, and no need for frequency band licensing. [0003] With the development of science and technology, the use of Ethernet to transmit information has become more and more common. Many instruments and equipment have Ethernet interfaces. If the visible light communication device can directly transmit data from the Ethernet network,...

AI Technical Summary

Problems solved by technology

On the one hand, this method can only be used for 10M Ethernet, because the signal frequency bands of 100M and 1000M Ethernet lines are very high, and it is difficult for the existing LED drive technology to achieve modulation of such a high frequency band

On the other hand, during the transmission of network data packets over the wireless channel, as long as 1 bit of information is wrong, the entire data packet will be wrong, resulting in packet loss. Frequent data errors, serious link interruption occurs, unable to perform normal data transmission

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