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

Visible light positioning communication method and system based on wavelength division multiplexing

A communication method and wavelength division multiplexing technology, applied in radio wave measurement systems, positioning, short-range systems, etc., can solve the problems of complex equipment system, limited positioning range, and high environmental requirements, and achieve extended standby time, good electromagnetic Compatibility, the effect of maintaining electromagnetic compatibility

Active Publication Date: 2021-05-04
ZHEJIANG UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a visible light positioning communication method and system based on wavelength division multiplexing, which solves the high environmental requirements, limited positioning range, and equipment system requirements for plane position positioning and communication technology in the prior art. Complex and costly to use

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
  • Visible light positioning communication method and system based on wavelength division multiplexing
  • Visible light positioning communication method and system based on wavelength division multiplexing
  • Visible light positioning communication method and system based on wavelength division multiplexing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0028] Such as figure 1 As shown, firstly, four LED lighting strips 2, 3, 4 and 5 that emit light evenly are arranged horizontally on the four walls of the rectangular indoor space 1, and the four LED lighting strips are all installed in the center of the wall, and Keep the installation height the same, and make the lengths of the four LED lighting strips consistent and relatively aligned. Two LED lamp beads A and B are installed on the four LED lighting strips, of which lamp bead A...

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 discloses a visible light positioning communication method and system based on wavelength division multiplexing. By setting an LED lighting strip with red and blue light beads in a rectangular indoor space, and placing a light strip with a red light filter Photodetectors, photodetectors with blue light filters, and mobile platforms equipped with mobile platform control inside, adopt wavelength division multiplexing technology, which not only completes indoor environment positioning, but also realizes one-way communication; adopts visible light frequency band pulse modulation Signal, without electromagnetic infection, is conducive to maintaining good electromagnetic compatibility, while realizing positioning, it can effectively feed power to various terminal equipment by extracting the energy in the received signal; the average light intensity of the four LED lighting strips is the same, because It belongs to a strip-shaped distributed light source, which is easy to achieve uniform lighting in a large area, and because its flicker frequency is much higher than the human perception range (such as above 1kHZ), the positioning and communication functions will not affect the lighting quality.

Description

technical field [0001] The invention relates to the technical field of planar position positioning, in particular to a visible light positioning communication method and system based on wavelength division multiplexing. Background technique [0002] As a mature wireless positioning technology, GPS navigation has been widely used in outdoor environments. When people's frequent activities are in tunnels, underground and other sheltered environments and indoor environments and there is a need for positioning, GPS positioning cannot be used because the received signal is very poor. To solve this problem, people began to explore different indoor positioning technologies. For example, using wireless local area network, Bluetooth technology, ultrasonic technology and infrared technology. These technologies determine the relative position between the moving target and the fixed unit through communication, and then deduce the actual position of the target. However, they often need...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/16H04B10/116
CPCG01S5/16H04B10/116
Inventor 徐敬林佳明赵苗苗
Owner ZHEJIANG UNIV
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