Laser communication machine

Abstract

The invention discloses a laser communication machine. The laser communication machine comprises a shell and a processing module, a transmitting module and a receiving module, wherein the receiving module is connected with the processing module; the processing module is connected with the transmitting module; the receiving module comprises a refraction receiver, a photoelectric sensor and an amplifier filter circuit connected in order; the transmitting module comprises an optical fiber collimator, a driving circuit, a temperature detection circuit and a semiconductor refrigerating circuit; the optical fiber collimator is connected with the processing module through the driving circuit; the processing module comprises a microprocessor, a modulation unit and a demodulation unit; a signal output end of the microprocessor is connected with a signal input end of the modulation unit, and the signal input end of the microprocessor is connected with the signal output end of the demodulation unit; a liquid crystal display and a keyboard are arranged at one side of the shell, and a laser array is arranged at the other side of the shell. The laser communication machine can be used for mountaintop, gully and like treacherous terrain environments difficult to erect the communication line, thereby realizing fast and accurate communication; and the working efficiency is improved.

Description

technical field [0001] The invention relates to the field of laser communication, in particular to a laser communication device. Background technique [0002] Visible light communication technology refers to a communication method that uses light in the visible light band as an information carrier and directly transmits optical signals in the air without using optical fiber and other wired channel transmission media. [0003] In the prior art, physical implementation of visible light communication is divided into two parts: optical signal transmission and optical signal reception. Among them, the optical signal transmitting part includes: an input and processing circuit that converts the signal source signal into an electrical signal that is convenient for optical channel transmission, and an LED visible light drive modulation circuit that modulates the change of the electrical signal into a change in the intensity of the optical carrier; the optical signal receiving part in...

AI Technical Summary

Problems solved by technology

[0004] However, the biggest problem in practical applications of visible light communication is that the communication distance is relatively short due to interference and dispersion, and wireless signals such as WIFI or Bluetooth are subject to frequency interference or radio signal shielding, which will also cause communication interruptions.

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