Underwater LED (Light-Emitting Diode) long distance communication system based on visible light

A long-distance communication, visible light technology, applied in the field of optical communication, to achieve the effect of increasing the transmission rate, increasing the data carrying capacity, and reducing the influence of interference

Active Publication Date: 2016-06-15
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0003] Under the limitation of special scenarios in the underwater environment, compared with the other two communication technologies, wireless optical communication has the advantages of fast speed (up to Gbps level), high bandwidth (high frequency of visible light band, strong information carrying capacity), and good confidentiality ( Due to the strong d

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  • Underwater LED (Light-Emitting Diode) long distance communication system based on visible light
  • Underwater LED (Light-Emitting Diode) long distance communication system based on visible light

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Embodiment Construction

[0041] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] According to the research results, the attenuation of different wavelengths of light in water is different, and the attenuation of visible light (blue-green light) in the range of 470nm-580nm is the smallest, and it can be seen that there is a clear transmission window in the blue-green light band. Water molecules, chlorophyll, dissolved organic matter, suspended particulate matter and many other factors affect the attenuation of visible ligh...

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Abstract

The invention discloses an underwater LED (Light-Emitting Diode) long distance communication system based on a visible light. The system comprises a transmitting device and a receiving device which are arranged underwater and respectively used for performing waterproof packaging; the transmitting device specifically comprises a data acquisition module, a transmitting end digital signal processing module, a digital to analog conversion module, a transmitting end amplifier equalization module, a direct current bias module and a light source; the receiving device specifically comprises an optical receiving module, a receiving end amplifier equalization module, a filter module, an analog to digital conversion module, a receiving end digital signal processing module and a data recovery module. The underwater LED long distance communication system based on the visible light provided by the invention can overcome the attenuation influence of an underwater environment on an electromagnetic wave and the disadvantage of low speed and low bandwidth of a sound wave, improve the transmission rate, increase the data carrying capacity, enhance the security, reduce the interference effect, reduce the equipment cost and power consumption, and realize high speed, high bandwidth, high security, and anti-interference underwater wireless optical communication.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to an underwater LED long-distance communication system based on visible light. Background technique [0002] In recent years, with the rapid development of underwater detection technology, human beings have become more and more intensive in marine research and development, and the requirements for underwater supporting technologies have gradually increased, especially for underwater high-speed wireless communication technology. Requirements, for this underwater wireless optical communication came into being. The current underwater wireless communication methods are roughly divided into three categories: underwater long-wave radio communication (mainly used in military affairs), underwater wireless acoustic communication and underwater wireless optical communication. [0003] Under the limitation of special scenarios in the underwater environment, compared with the ot...

Claims

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Application Information

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IPC IPC(8): H04B10/116H04B13/02
CPCH04B10/116H04B13/02
Inventor 王沛霖李超徐正元
Owner UNIV OF SCI & TECH OF CHINA
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