Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

LED lighting communication system

A LED lighting and communication system technology, applied in the field of visible light communication, can solve the problems of limited modulation bandwidth, limit the transmission rate of visible light communication, increase the complexity and cost of the system, avoid interference and inter-symbol interference, and improve anti-interference ability Effect

Inactive Publication Date: 2014-09-10
GUILIN UNIV OF ELECTRONIC TECH
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many studies hope to increase the transmission rate as much as possible in the limited modulation bandwidth, such as OFDM modulation, MIMO, equalization and other technologies, which will undoubtedly increase the complexity and cost of the system
Most of the lighting LEDs on the market are yellow phosphors excited by blue light, and their modulation bandwidth is very limited, which limits the transmission rate of visible light communication.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • LED lighting communication system
  • LED lighting communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] In order to be able to understand the above objectives, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other if there is no conflict.

[0038] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the scope of protection of the present invention is not subject to the specific implementations disclosed below. Limitations of cases.

[0039] Some embodiments according to the present invention will be described below with reference to the drawings.

[0040] The LED lighting communication system provided by the present invention, such ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An LED lighting communication system is composed of a transmitting device and a receiving device. The transmitting device comprises a transmitting main control module, an RGB-PPM modulation module, a pulse shaping module, an RGBLED driving circuit module and an RGBLED light source which are connected in sequence. The receiving device comprises a photodetection module, a signal processing circuit module, an RGB-PPM demodulation module and a receiving main control module which are connected sequentially. Three-path parallel communication is achieved to transmit different messages, the data transmission rate is improved, RGB-PPM modulation is adopted to effectively solve the problems that traditional PPM bandwidth use efficiency is low and pulse lasting time is short, the bandwidth is reduced to 1 / 4 of 16PPM under the conditions of the same transmission rate (4 bit), the wave length can be selected through the adopted photodetection module, and dual functions of lighting and communication are achieved finally.

Description

Technical field [0001] The invention relates to visible light communication, in particular to an LED lighting communication system of RGB LED visible light communication technology. Background technique [0002] LED has the characteristics of long service life, high luminous efficiency, low cost, small size and fast response speed, and is widely used in daily equipment such as indoor lighting, landscape lighting equipment, traffic lights, and various flat-panel displays. Visible light communication uses LED lighting to communicate at the same time, which increases the added value of lighting and improves economic benefits. [0003] However, how to increase the transmission rate of visible light communication is one of the key technologies to be solved. At present, many studies hope to increase the transmission rate as much as possible in the limited modulation bandwidth, such as OFDM modulation, MIMO, equalization and other technologies, which undoubtedly increase the complexity a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04B10/116F21S2/00F21Y101/02F21K9/20F21Y115/10
Inventor 陈名松汤玲利汪永辉吴伊雪许笑毛国维
Owner GUILIN UNIV OF ELECTRONIC TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com