Remote visible light communication method

A visible light communication, long-distance technology, applied in the field of long-distance visible light communication, can solve the problems of human injury, electromagnetic pollution, high cost, etc.

Inactive Publication Date: 2015-07-08
BEIJING CHINACOMM HORIZON COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned transmission methods have great limitations. The first one has high cost and higher maintenance cost. The second one has lower cost, but the signal is transmitted by radiation, which brings unnecessary electromagnetic interference. Pollution, excessive electromagnetic radiation is harmful to the human body

Method used

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  • Remote visible light communication method
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Examples

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Embodiment Construction

[0027] Such as figure 1 as shown, figure 1 It is a flow chart of the remote visible light communication method described in the embodiment of the present invention.

[0028] A remote visible light communication method described in an embodiment of the present invention, the method includes the following steps:

[0029] The sending end reads the ASCII encoded file, serializes the file data and forms a voltage pulse, and converts the voltage pulse into a current pulse;

[0030] The LED array is controlled to send light signals through the converted current pulse;

[0031] The receiving end PD receives the optical signal;

[0032] Through the preamplifier and CDR, the pulse is converted into a bit sequence, deserialized and decoded to restore the ASCII file.

[0033] The remote visible light communication method provided by the embodiment of the present invention transmits information through visible light, and visible light communication uses optical signals of visible light...

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Abstract

The invention relates to a remote visible light communication method. The method comprises the following steps: reading an ASCII (American Standard Code for Information Interchange) encoded file by a transmitting end, serializing file data, forming a voltage pulse, and converting the voltage pulse into a current pulse; controlling an LED (Light-Emitting Diode) array to transmit a light signal through the converted current pulse; receiving the light signal by a receiving end PD; and converting the pulse into a bit sequence through a pre-amplifier and a CDR, and performing de-serialization and decoding to recover the ASCII file. The remote visible light communication method has the beneficial effects that information is transmitted via visible light. Being different from wireless communication in which electromagnetic radiation is generated and optical fiber communication which is dependent on transmission media, visible light communication allows transmission to be performed by means of a light signal of visible light, and is implemented by means of free transmission of light in an open spatial environment. Moreover, a certain illuminating function can also be implemented.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a remote visible light communication method. Background technique [0002] In the traditional communication field, the communication methods are as follows: [0003] 1) Wired communication, connecting the sending end and the receiving end with a cable, and sending information from the sending end to the receiving end through electrical signals. [0004] 2) In wireless communication, information is loaded on a high-frequency signal at the sending end and radiated to space through the antenna, and the receiving end receives the radiated signal from time to time, demodulates it and restores it to useful original information. [0005] 3) Optical fiber communication, connect the sending end and receiving end with optical fiber, modulate the information into an optical signal at the sending end, send the optical information to the receiving end through the optical fiber,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/116H04B10/516H04L1/16H04L1/18
Inventor 张良忠张明伦刘文辉周梦蜜赵鹏
Owner BEIJING CHINACOMM HORIZON COMM TECH
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