Multispectral visible light positioning system for indoor positioning

A positioning system and indoor positioning technology, applied in the field of visible light communication, can solve the problems of insufficient utilization of spectral characteristics of light sources, complex and expensive receiving equipment, etc.

Active Publication Date: 2016-03-23
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to improve the problem that the existing indoor light positioning system makes insufficient use of the spectral characteri

Method used

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  • Multispectral visible light positioning system for indoor positioning
  • Multispectral visible light positioning system for indoor positioning
  • Multispectral visible light positioning system for indoor positioning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] figure 1 A schematic block diagram of the principle of a multi-spectrum visible light positioning system for indoor positioning of the present invention described in , its main feature is that it includes two parts: a multi-spectral transmitting end and a receiving end. combine figure 2 What is described is a functional block diagram of a multi-spectrum transmitting end of a multi-spectrum visible light positioning system for indoor positioning in this embodiment. Among them, there are 3 multi-spectral transmitters, each of which can be divided into 5 parts: 201 power module, 202 single-chip microcomputer, 203 LED drive circuit, 204 LED chip, 205 plastic microlens and 206 lampshade;

[0041] Wherein, the 201 power supply module is directly connected to 220V alternating current, and converts the alternating current into 64V direct current voltage required by the LED drive circuit;

[0042] The 202 single-chip microcomputer adopts the STM32 single-chip microcomputer as...

Embodiment 2

[0060] If the mobile phone in Embodiment 1 is changed to a tablet computer or other mobile devices or fixed devices with color imaging detectors, the positioning system is still valid.

Embodiment 3

[0062] The positioning system is still effective if the white light illumination in Embodiment 1 is changed to other color light illumination.

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Abstract

The invention discloses a multispectral visible light positioning system for indoor positioning, comprising multiple multispectral transmitters and a receiver. The multispectral transmitters provide multiple spectrum tags for the positioning system while meeting the lighting requirement, and are each composed of a power module, an LED drive and proportional control module and a multispectral solid light source. The receiver carries out calculation according to shot images of the multispectral solid light sources, so that the position of the receiver is obtained, and positioning is realized. The receiver comprises a color imaging detector, a spectrum tag and an imaging positioning algorithm, wherein the imaging positioning algorithm is used for estimating the height of the receiver according to the size and imaging size of the multispectral solid light sources, and calculating out the position of the receiver according to the imaging position and the space coordinates of the multispectral transmitters. The positioning system disclosed by the invention can achieve a lighting function, and can provide high-precision positioning inside any building and provide location information for location-based services.

Description

technical field [0001] The invention relates to an indoor visible light positioning technology for indoor lighting integration, in particular to a multi-spectrum visible light positioning system for indoor positioning, and belongs to the technical field of visible light communication. Background technique [0002] With the continuous development of electronic technology and the popularization of personal smart mobile devices, people's demand and dependence on positioning and location-based services continue to increase. Due to the influence of transmission loss and multipath effect, traditional GPS positioning technology cannot be used effectively indoors. With the advancement of solid-state light source technology, solid-state light sources represented by LEDs gradually replace incandescent and fluorescent lamps due to their advantages in luminous efficiency, color rendering, manufacturing cost and environmental protection, and become an important part of the future lightin...

Claims

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Application Information

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IPC IPC(8): G01S5/16
CPCG01S5/16
Inventor 杨爱英黄河清冯立辉倪国强
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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