Visible light communication-based indoor positioning system and method

A visible light communication and indoor positioning technology, which is applied in positioning, radio wave measurement systems, and measurement devices, can solve the problems of large system maintenance costs, high system costs, and low accuracy, and achieve low maintenance costs, simple maintenance, and cost savings The effect of spending

Inactive Publication Date: 2014-06-18
BEIJING UNIV OF POSTS & TELECOMM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Active Badge positioning system, based on the indoor marker sensing prototype system, estimates the user's position based on the approximation method, which can only be accurate to the room, so the accuracy is low;
[0004] Acti

Method used

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  • Visible light communication-based indoor positioning system and method
  • Visible light communication-based indoor positioning system and method
  • Visible light communication-based indoor positioning system and method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0047] Example 1:

[0048] Visible light communication transmits information by using high-speed bright and dark flickering light signals emitted by white light or colored light-emitting diodes that cannot be observed by the naked eye. It is a technology that has been used in indoor communication.

[0049] The indoor positioning system based on visible light communication in this embodiment includes a transmitter and a mobile receiver;

[0050] The transmitting end is composed of several transmitters distributed in various places in the room;

[0051] The transmitter includes an LED light source for outputting the position information of the transmitter as an optical signal;

[0052] The mobile receiving end is used for receiving the optical signal, converting it into an electrical signal, and extracting position information from the electrical signal.

[0053] In a specific use process, the LED light source outputs an optical signal with a flickering signal according to the...

Example Embodiment

[0054] Embodiment 2:

[0055] like figure 1 As shown, this embodiment is an indoor positioning system based on visible light communication, including a transmitter and a mobile receiver;

[0056] The transmitting end includes a plurality of transmitters distributed in various places in the room; the number and position of the transmitters are set according to the needs and the preset positioning accuracy;

[0057] The transmitter includes:

[0058] The first signal processing unit is used to generate and output a modulation signal capable of driving the LED light source from the position information of the first signal processing unit; if the transmitting end is located at position A, the first signal processing unit modulates its position signal - position A according to a preset The method modulates into a modulating signal identifiable by the LED light source and outputs it to the LED light source connected to it;

[0059] The LED light source is used to receive the modu...

Example Embodiment

[0064] Embodiment three:

[0065] The indoor positioning system based on visible light communication in this embodiment includes a transmitter and a mobile receiver;

[0066] The transmitting end is composed of several transmitters distributed in various places in the room;

[0067] The transmitter includes:

[0068] a first signal processing unit for generating and outputting a modulation signal capable of driving the LED light source based on the position information of the unit;

[0069] The LED light source is used to receive the modulated signal and convert it into an optical signal for external output;

[0070] The mobile receiver includes:

[0071] a photoelectric converter for receiving the optical signal and converting it into an electrical signal;

[0072] a second signal processing unit for receiving and demodulating the electrical signal to obtain location information;

[0073] The photoelectric converter is a solar cell; the solar cell receives the light sign...

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Abstract

The invention discloses a visible light communication-based indoor positioning system and method which are designed for solving the problems of high hardware cost, more system maintenance expense and the like of the existing indoor positioning system and method. The visible light communication-based indoor positioning system comprises a transmitting terminal and a mobile receiving terminal; the transmitting terminal consists of a plurality of transmitters distributed at various places indoors; each transmitter comprises an LED (light-emitting diode) light source for using a photosignal to output the position information of the transmitter; the mobile receiving terminal is used for receiving the photosignal, transforming the photosignal into an electric signal and extracting the corresponding position information from the electric signal. The visible light communication-based indoor positioning method is used in the visible light communication-based indoor positioning system and comprises the steps that one LED light source uses one photosignal to output the position information of the LED light source; the mobile receiving terminal receives the photosignal, transforms the photosignal into the electric signal and extracts the corresponding position information from the electric signal. The visible light communication-based indoor positioning system and method have the advantages of low hardware cost, less system maintenance expense, high accuracy and the like.

Description

technical field [0001] The invention relates to the field of visible light communication, in particular to an indoor positioning system and method based on visible light communication. Background technique [0002] The GPS global positioning system solves the outdoor positioning, but the indoor positioning of leisure office places such as shopping malls and commercial buildings cannot be well solved due to the occlusion of buildings. Existing indoor positioning systems include: [0003] Active Badge positioning system, based on the indoor marker sensing prototype system, estimates the user's position based on the approximation method, which can only be accurate to the room, so the accuracy is low; [0004] Active Bat positioning systems, Cricket and SpotON positioning systems usually require the use of a large number of special equipment indoors where positioning is required, resulting in high system costs and high system maintenance expenses. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): G01S5/16
CPCG01S5/16
Inventor 张民韩大海罗鹏飞张翔李青李壮
Owner BEIJING UNIV OF POSTS & TELECOMM
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