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LED visible light communication passive modulation system and modulation method

A technology of visible light communication and modulation system, applied in the field of LED visible light communication passive modulation system and modulation, can solve the problems of difficulty in high-power LED modulation, poor interchangeability of modulation circuits, etc., and achieves low device cost, improved interchangeability, and reduced cost Effect

Active Publication Date: 2017-01-18
JIANGSU HAIHONG ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem mainly solved by the present invention is to provide a passive modulation system and modulation method for LED visible light communication, which solves the problems of difficult modulation of high-power LEDs and poor interchangeability of modulation circuits in the prior art

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  • LED visible light communication passive modulation system and modulation method

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. 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.

[0022] see figure 1 , the embodiment of the present invention includes:

[0023] A passive modulation system for LED visible light communication, comprising: an LED light source 5, a lens 4, and a moving coil 2 arranged in sequence, the moving coil 2 is located on the vibrating center surface on one side of the lens, and a reflective film 3 is pasted on the vibration center surface, and the LED light source 5 The emitted light is directed to lens 4.

[0024] The LED visible light communication passive modulation sy...

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Abstract

The invention discloses an LED visible light communication passive modulation system comprising an LED light source, a lens and a moving coil which are arranged in turn. A reflecting film is pasted on the surface of the vibration center, which is arranged at one side of the lens, of the moving coil. Light emitted by the LED light source points to the lens. The invention also provides a modulation method for the aforementioned LED visible light communication passive modulation system. With the aforementioned mode, high-power LED modulation can be realized; modulation of any LEDs meeting a Lambert light emitting model can be realized so that interchangeability of the system is enhanced; and cost can be effectively reduced in large-scale VLC system application reconstruction so that resource is saved.

Description

technical field [0001] The invention relates to the technical field of electronic information, in particular to a passive modulation system and modulation method for LED visible light communication. Background technique [0002] Visible light communication (Visible light communication, VLC) can realize data transmission using the flickering frequency of the lighting light without affecting the lighting, that is, the data interaction with the outside world can be performed within the range that the light can illuminate. This is "Li-Fi" ( Light Fidelity) technology. LED (Light Emitting Diode) is a new type of energy-saving light source, which is a solid-state semiconductor device that can convert electrical energy into visible light. With the introduction of the concept of "Li-Fi" and the increasing development of LED lighting technology, LED-based visible light communication has received extensive attention. [0003] Domestic Beijing University of Posts and Telecommunicatio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/116H04B10/516
Inventor 陈炜
Owner JIANGSU HAIHONG ELECTRONICS