Remote visible light communication transceiving system

Abstract

The invention relates to the technical field of visible light communication and in particular discloses a remote visible light communication transceiving system. The remote visible light communicationtransceiving system comprises a transmitting device and a receiving device, wherein the transmitting device comprises a sight mirror, an LED light source and a collimation lens; the sight mirror is arranged at the top of the transmitting device; the LED light source and the collimation lens are arranged inside the transmitting device, and the LED light source is arranged at a focal point of the collimation lens; the receiving device comprises the sight mirror, an objective lens and a detection device; the sight mirror is arranged at the top of the receiving device; the objective lens comprises a primary lens and a secondary lens, and the secondary lens is arranged at one end, close to a receiving hole, of the receiving device; the primary lens is arranged at the other end of the receivingdevice, a through hole is formed in the center of the primary lens, the through hole is connected with the detection device, and the detection device is provided with an image sensor, a rotatable retroreflector and a detector. The remote visible light communication transceiving system disclosed by the invention has the advantages that emitted lights are collimated, coarse tuning can be carried out on a visible light communication direction by utilizing the sight mirror, and then fine tuning is carried out by utilizing the image sensor, so that received signal-to-noise ratio is increased, andcommunication interference is reduced.

Description

technical field [0001] The invention relates to the technical field of visible light communication, and specifically discloses a long-distance visible light communication transceiver system. Background technique [0002] In visible light communication, the signal-to-noise ratio of the signal received at the receiving end is one of the important parameters that affect the quality of visible light communication. For common long-distance visible light communication systems, there is noise interference in the received information, which affects the quality of communication. How to maximize the received signal energy and minimize noise has always been a problem that needs to be considered. These technical difficulties all affect long-distance visible light communication. Applications. [0003] For the receiving end of long-distance communication, first, the distance between the sending and receiving ends is relatively large. If the receiving end receives the wrong direction, it ...

AI Technical Summary

Problems solved by technology

For common long-distance visible light communication systems, there is noise interference in the received information, which affects the quality of communication. How to maximize the received signal energy and minimize noise has always been a problem that needs to be considered. These technical difficulties all affect long-distance visible light communication. Applications

[0003] For the receiving end of long-distance communication, first, the distance between the sending and receiving ends is relatively large. If the receiving end receives the wrong direction, it will not be able to receive the optical signal sent by the transmitting end; The background light signal; the third is that the long-distance atmospheric environment will cause certain interference to the transmitted light signal and make the light signal energy fluctuate randomly

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