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

Method for arranging visible light communication distributed light sources of coal mine working face

A technology of visible light communication and distributed light source, which is applied in the field of visible light communication distributed light source layout in coal mine working face, which can solve the problems that the research method of LED light source distribution is complex and difficult to implement, and is not applicable to the layout of mine working face.

Inactive Publication Date: 2013-11-20
CHINA UNIV OF MINING & TECH
View PDF5 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem that the current research method of LED light source distribution in visible light communication is complicated and difficult to implement, and is not suitable for the layout of mine working face

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
  • Method for arranging visible light communication distributed light sources of coal mine working face
  • Method for arranging visible light communication distributed light sources of coal mine working face
  • Method for arranging visible light communication distributed light sources of coal mine working face

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Embodiment 1: This method first constructs the LED light source illumination distribution and optical signal power distribution model of visible light in the coal mine underground working face, and lays out the LED light source with equal power and uniform distribution in the cuboid communication space of the coal mine underground working face.

[0073] The layout method of the cuboid communication space in the coal mine working face with equal power and uniform distribution of LED light sources:

[0074] The method of adopting uniform space division is to divide the visible light communication space of the coal mine working face into several communication spaces with a square top, taking the plane composed of the top plate of the hydraulic support of the coal mine working face as the upper plane, and the length of the top plate of the hydraulic support as the side length, Each communication space adopts a uniform distribution of high power, using a 5W intrinsically safe...

Embodiment 2

[0109] Embodiment 2: This method first constructs the visible light LED light source illumination distribution and optical signal power distribution model in the coal mine underground working face, and lays out the equal-power uniformly distributed LED light source based on edge power correction in the rectangular parallelepiped communication space of the coal mine underground working face. On the basis of uniformly distributed light sources with equal power, the power of edge light sources is corrected. The construction of the LED light source illumination distribution and optical signal power distribution model of visible light in the coal mine underground working face is the same as that in Embodiment 1.

[0110] The communication space of the invention is selected as the coal mine underground working face with a width of 4m, a length of 20m, and a height of 3m. The top of the hydraulic support is designed with a uniform square matrix layout of LED light sources as follows: ...

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

The invention relates to a method for arranging visible light communication distributed light sources of a coal mine working face, and belongs to a method for arranging light sources of the coal mine working face. On the basis of providing a model of visible light LED light source illumination distribution and light signal power distribution in the underground coal mine working face, a cuboid-shaped communication space of the coal mine working face is divided into a plurality of small communication spaces with the top parts being square. High-power intrinsically safe white light LED light sources are uniformly distributed on a hydraulic support in the small communication space in such a mode that the distance between each of the LED light source and an adjacent light source or a boundary is identical. The light source signal intensity of a receiving plane is enabled to be the optimal through a solution based on correcting the edge light source power. The model of the equal-power uniformly distributed LED light sources of the underground coal mine working face ensures uniform coverage of wireless light signals of the receiving plane, and can meet double requirements of communication and lighting of the LED light sources in the coal mine working face; the receiving performance is ensured through further correcting the light source power at the edges or the four side positions, and the standard deviation of the light signals of the receiving plane is enabled to reduce to about 50% of that of the original.

Description

technical field [0001] The invention relates to a method for arranging a light source in a coal mine working face, in particular to a method for arranging a visible light communication distributed light source in a coal mine working face. Background technique [0002] At present, coal mine audio, video, and data information transmission mainly rely on the combination of wired and wireless communication methods to realize real-time communication underground and above the mine. With the continuous change of the communication space of the mining face of the coal mining machine, it is very inconvenient to lay wires. Wireless communication is Optimal means of communication. Traditional radio leakage, PHS, CDMA, and WiFi communication technologies all have certain limitations in underground applications. The cost of radio leakage communication technology is high, energy consumption is high, and PHS is gradually withdrawing from the market. WiFi is the latest wireless communicatio...

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): H04B10/116H04B10/075H04B17/00
Inventor 张申游春霞翟彦蓉胡青松卑璐璐黄凯
Owner CHINA UNIV OF MINING & 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