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Method for judging rotation characteristic of light source based on summation calculation in visible light indoor positioning

A technology of indoor positioning and rotation characteristics, applied in the field of navigation and positioning, can solve the problems of the small number of light source IDs and the inability to accurately distinguish the authenticity of light sources, etc., and achieve simple, effective and easy-to-implement effects

Active Publication Date: 2019-09-13
DALIAN UNIV OF TECH
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the number of light source IDs is small, and it is impossible to accurately distinguish the true from the false in the case of a large number of light sources

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  • Method for judging rotation characteristic of light source based on summation calculation in visible light indoor positioning
  • Method for judging rotation characteristic of light source based on summation calculation in visible light indoor positioning
  • Method for judging rotation characteristic of light source based on summation calculation in visible light indoor positioning

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific examples.

[0025] In the specific implementation process, the transmission sequence delay is sent according to the setting conditions given by the transmission sequence delay size, and the receiving end calculates the transmission sequence delay through correlation and sums and verifies the results.

[0026] (1) At the transmitting end, select a group of transmitting sequences whose sequence length is P=20 and send different sequences representing the ID of the light source. light source B 1 ,B 2 ,B 3 Arranged counterclockwise to form a convex closed geometric figure.

[0027] (2) Given a positive integer K=1. The sending end sets the delay of the emission sequence of adjacent light sources as h according to the layout rules 1 =4,h 2 = 5, so h 3 =11.

[0028] (3) Fix the posture and position of the mobile phone at the receiving end to ensure that the continuous shooting frequency...

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Abstract

The invention relates to a method for judging the rotation characteristic of a light source based on summation calculation in visible light indoor positioning, and belongs to the technical field of navigation positioning. The method is realized based on an LED positioning system and comprises the following steps of firstly, arranging light sources in a convex pattern according to a rule, and providing a emission sequence for each light source according to a set condition; secondly, fixing the position and the posture of a mobile phone at a receiving end, continuously shooting by using a mobilephone camera to obtain a plurality of light source pictures, and processing the pictures to obtain a light source transmitting sequence; thirdly, carrying out sequence correlation operation on the adjacent light sources to obtain the delay of the emission sequence, and carrying out addition calculation on the delay of the emission sequence to judge whether the light sources are true or false; andfinally, after the false light source is eliminated, positioning is finished by utilizing a positioning algorithm. Compared with other methods capable of distinguishing the rotation characteristics of the light sources, the method for judging the rotation characteristic of the light source based on summation calculation in visible light indoor positioning mainly has the advantages that the same emission sequence is used for providing the emission sequence for each light source, and more light source IDs can be provided, and the method for distinguishing the rotation characteristics is simple,effective and easy to implement.

Description

technical field [0001] The invention belongs to the technical field of navigation and positioning, relates to a visible light indoor positioning method, in particular to a method for judging the rotation characteristics of a light source based on summation calculation in visible light indoor positioning. Background technique [0002] With the rapid development of the LED lighting industry, the visible light indoor positioning technology using LED lights as the light source has gradually developed. Items that can cause specular reflection, such as glass or mirrors, which are common indoors, will reflect and generate false light sources, thus affecting the positioning reliability. Compared with the traditional method of identifying the rotation characteristics of light sources, the invention has the advantage that different light sources use the same emission sequence, the identification method is simple and easy to calculate, and the number of IDs can be greatly increased. ...

Claims

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Application Information

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IPC IPC(8): G01S5/16G01C21/20
CPCG01S5/16G01C21/206
Inventor 邹德岳刘云凤赵楠刘鑫
Owner DALIAN UNIV OF TECH
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