A visible light communication light increases the receiving system

A technology of visible light communication and receiving system, which is applied in the field of secure communication, can solve the problems of long-distance communication without communication distance, and without visible light intensity enhancement reception method, so as to achieve the effect of improving practicability

Active Publication Date: 2019-01-15
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

[0008] (2) In terms of patents, visible light communication has 534 patents, among which there is no method for improving the communication distance in terms of long-distance communication, and using spectral shifting at the receiver through green light and blue light
[0010] In summary, there is no visible light intensity enhanced reception method

Method used

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  • A visible light communication light increases the receiving system
  • A visible light communication light increases the receiving system
  • A visible light communication light increases the receiving system

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Embodiment Construction

[0026] In order to illustrate the specific implementation of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] 1. According to the characteristics of the visible light communication system, it belongs to the wide-spectrum communication method. Therefore, there is no wide-spectrum amplifier used on the receiving side, which limits the minimum power of communication detection. Therefore, the principle of STOKES photoluminescence is adopted, and the passive light conversion used in specific Material 4 is a nitride CaAlSiN3:Eu2+ phosphor, which is N660 in the national standard (GB / T 30075-2013), a phosphor with an atomic structure of 1113, which converts high-energy photons into low-energy photons in the H-α spectrum , experimentally tested the communication performance of passive light-transforming materials in blue light-emitting diodes. The specific process is: firstly, use blue light-emitting ...

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Abstract

A visible light communication intensity-enhanced receiving system of the invention comprises a visible light illumination and communication transmitting unit, a transmitting antenna, a receiving focusing lens, a passive light conversion material, a narrow-band filter, a light amplifier, a photoelectric detector, and a signal processing unit. The visible light illumination and communication transmitting unit loads modulation information on a light source, and transmits modulated information via the transmitting antenna to a free space. The receiving focusing lens collects visible light signals. When the collected visible light signals pass through the passive light conversion material, received visible light energy is compressed and converted into a narrow spectrum in a concentrated manner. The compressed spectrum is filtered by the narrow-band filter at the focal plane of the receiving focusing lens and sent to the light amplifier for narrow spectrum amplification. The amplified narrow spectrum is converted by the photoelectric detector into electrical signals. Finally, the electrical signals are demodulated by the signal processing unit to get communication information. The system has very good application, improves the communication distance of visible light, and is practical.

Description

technical field [0001] The invention belongs to the field of secure communication and relates to a system for long-distance visible light communication. Background technique [0002] Visible light communication is a new green information technology that utilizes the fast response characteristics of LEDs to achieve high-speed data transmission. This technology uses LED as a light source, and can enable lighting equipment to have functions such as "wireless router", "communication base station", and "network access point" without affecting normal lighting. Visible light communication, as a new communication mode combining lighting and optical communication, will promote the integrated development and technological progress of next-generation lighting and access networks, and has become the focus and commanding heights of competition at home and abroad. The development of visible light communication is of great significance no matter at the national strategic level, or its pot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/116
CPCH04B10/116
Inventor 郭海超张立李小军段鹏辉迟楠
Owner XIAN INSTITUE OF SPACE RADIO TECH
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