Indoor visible light intensity positioning system with error correction function

Abstract

The invention relates to an indoor visible light intensity positioning system with an error correction function and belongs to the technical field of visible light communication. The indoor visible light intensity positioning system comprises a visible light downlink transmitting module, a visible light receiving module and a light intensity fluctuation factor monitoring unit, wherein the visible light downlink transmitting module sends modulated coding signals through an LED; the light intensity fluctuation factor monitoring unit calculates light intensity fluctuation factors according to the intensity fluctuation of different LED light sources, and the light intensity fluctuation factors are sent to the visible light receiving module through a wireless communication mode; the visible light receiving module receives the modulated coding signals sent by the visible light downlink transmitting module, and a position is calculated through the received modulated coding signals and the received light intensity fluctuation factors. According to the indoor visible light intensity positioning system provided by the invention, real-time light intensity information is obtained through the additional arrangement of a light intensity fluctuation factor monitoring and transmitting unit, and traditional fixed parameters are replaced by the real-time intensity factors to calculate the position, so that positioning errors caused by light intensity fluctuation are reduced.

Description

technical field [0001] The invention relates to an indoor visible light signal strength positioning system including error correction, and belongs to the technical field of visible light communication. Background technique [0002] The indoor positioning solution based on visible light communication (Visible Light Communication, VLC) technology uses white light emitted by white semiconductor light-emitting diodes (Light Emitting Diode, LED) as the carrier of positioning signals, and has strong resistance to electromagnetic radiation, and the transmission channel of VLC generally adopts Direct channel, multipath interference is relatively small, so this positioning scheme can achieve relatively high accuracy; in addition, the indoor positioning system based on VLC technology is compatible with future VLC communication technology, so it does not require expensive hardware equipment investment, and the cost is relatively low . The current indoor positioning mostly uses RSS hig...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the existing problem of indoor positioning error fluctuation based on visible light RSS, and propose an indoor visible light intensity positioning system including error correction

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