Indoor passive positioning system and method based on light field matching

A passive positioning and light field matching technology, applied in the field of indoor passive positioning systems based on light field matching, can solve the problems of high cost and high complexity

Active Publication Date: 2020-08-28
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the positioning technology based on visible light communication, it is necessary to code and modulate the emission source LED, which is complex and expensive

Method used

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  • Indoor passive positioning system and method based on light field matching
  • Indoor passive positioning system and method based on light field matching
  • Indoor passive positioning system and method based on light field matching

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Experimental program
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Embodiment Construction

[0035] Below in conjunction with accompanying drawing and embodiment describe in detail:

[0036] 1. System

[0037] 1. Overall

[0038] Such as figure 1 , the system consists of a light meter 10 and a smart phone 20 connected to each other (connected by a cable);

[0039] The illuminance meter 10 is made up of an interconnected photodetector 11 and a spectral filter 12;

[0040] The smart phone 20 is embedded with data processing software 21 and positioning program software 22 .

[0041] 2. Functional components

[0042] 1) Light meter 10

[0043] (1) The light detector 11 is responsible for receiving the light signal emitted by the LED;

[0044] (2) The spectral filter 12 is responsible for processing the illumination signal obtained by the light detector, and converting the illumination signal into a digital display.

[0045] 2) Smartphone 20

[0046] (1) data processing software 21, responsible for storing the coordinates of the collection point and the correspondi...

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Abstract

The invention discloses an indoor passive positioning system based on light field matching and a method thereof, and relates to an optical communication positioning technology. The system consists ofan illuminometer (10) and a smart phone (20), wherein the illuminometer (10) and the smart phone (20) are interconnected. The illuminometer (10) consists of a photometer (11) and a spectral filter (12), wherein the photometer (11) and the spectral filter (12) are interconnected. Data processing software (21) and positioning program software (22) are embedded in the smart phone (20). The system provided by the invention has the advantages that 1 a unique light field distribution map, namely a light field fingerprint database, corresponding to an indoor position is constructed; 2 a matched lightfield fingerprint is acquired, and the current position of a user is determined to realize positioning; and 3 a light source is free of any special modulation and modification, and the system adaptsto changes of the light field of the indoor position, and can be used for positioning in places with light.

Description

Technical field: [0001] The invention relates to optical communication positioning technology, in particular to an indoor passive positioning system based on light field matching and a method thereof. Background technique: [0002] The application requirements of indoor positioning are more and more extensive, and indoor positioning technology has received more attention from people; applications related to indoor positioning include smart home, smart logistics, building interior navigation, warehouse product positioning detection, etc. So far, many positioning technologies for indoor scenes have been developed, such as infrared positioning, wireless local area network, radio frequency identification, ultra-wideband positioning, etc.; however, these positioning systems have disadvantages such as high cost of related devices and electrical radiation. Based on visible light indoor positioning, LED will be used to integrate lighting and communication, which has the advantages o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/20G01S5/16
CPCG01C21/206G01S5/16
Inventor 杨春勇周竞宇侯金陈少平
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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