Self-adaptive visible light indoor positioning method based on region division

A technology of area division and indoor positioning, applied in the field of visible light communication, can solve the problems of low universality and high complexity, and achieve the effect of low complexity, improved positioning error, and full coverage of two-dimensional plane positioning.

Active Publication Date: 2021-09-17
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0006] The present invention provides an adaptive visible light indoor positioning method based on area division to sol

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  • Self-adaptive visible light indoor positioning method based on region division
  • Self-adaptive visible light indoor positioning method based on region division
  • Self-adaptive visible light indoor positioning method based on region division

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Embodiment Construction

[0051] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0052] Aiming at the problems that the existing RSS-based indoor visible light positioning method is only applicable to specific light source layout scenarios, the positioning effect at the edge is poor, the positioning area is limited, the positioning accuracy is not high, and the universality is not strong, this embodiment provides a A low-complexity, high-precision adaptive visible light indoor positioning method based on area division. The positioning system model and receiver structure used in this positioning method are as follows: figure 1 As shown, the positioning area is a plane of 5m×5m. The transmitter uses 4 LED light sources, which are evenly arranged on the ceiling in a square array to provide lighting and communication, ...

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Abstract

The invention discloses a self-adaptive visible light indoor positioning method based on region division. The method comprises the steps of enabling a transmitter to drive a plurality of LEDs to transmit visible light signals; enabling a receiver to convert the received light signals into electric signals to obtain a coordinate position corresponding to the light source and received signal strength; carrying out intensity screening on received signals of a receiver center PD, selecting the strongest signal, and calculating the projection distance r1 from the receiver to the light source through a Lambert radiation formula; selecting a secondary strong signal, calculating a projection distance r2 from the receiver to the light source by a Lambert radiation formula, and calculating a fairness function value according to all received signals; and according to the obtained r1, r2 and the fairness function value, determining the area where the target receiver is located, and calculating a positioning coordinate by using a preset positioning algorithm. According to the method, the positioning precision is improved, full-coverage and high-precision positioning on a two-dimensional plane is realized, and the positioning blind area of an existing positioning method is greatly reduced.

Description

technical field [0001] The present invention relates to the technical field of visible light communication, in particular to an adaptive visible light indoor positioning method based on area division. Background technique [0002] With the increasing popularity of smart terminals and the rapid development of Internet of Things technology, indoor positioning technology is more and more widely used in logistics management, digital employees, environmental monitoring and other fields. Through the high-precision indoor positioning technology, not only can the location of the target be quickly and accurately found inside large and complex buildings such as museums, supermarkets, and airports; Loss of life and property; In addition, in smart warehousing, indoor positioning can provide accurate real-time positioning of goods, enabling the warehouse management system to fully visualize inventory allocation and unknown status. [0003] At present, indoor positioning technologies mai...

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Application Information

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IPC IPC(8): G01C21/20G01S5/16
CPCG01C21/206G01S5/16
Inventor 冯莉芳冯越
Owner UNIV OF SCI & TECH BEIJING
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