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A high-precision single-led light source indoor positioning device, system and method

An LED light source and indoor positioning technology, which is applied in the field of optical communication and indoor positioning, achieves the effects of low cost, improved flexibility, and improved positioning accuracy

Active Publication Date: 2018-01-19
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, to provide a high-precision single LED light source indoor positioning device, system and method, so as to realize accurate positioning indoors, and to solve the defects existing in the existing positioning technology in complex scenes

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  • A high-precision single-led light source indoor positioning device, system and method
  • A high-precision single-led light source indoor positioning device, system and method
  • A high-precision single-led light source indoor positioning device, system and method

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Embodiment 1

[0044] This embodiment discloses an indoor positioning device based on a single LED light source. For its structural block diagram, please refer to the attached figure 1 shown, including:

[0045] The image sensor is used for photographing the light source and acquiring an imaging image of the indoor light source.

[0046] The motion sensor is used to record the motion information of the imaging device of the indoor positioning device.

[0047] The processor is used for decoding the image of the light source, and determining the current position according to the decoded information and the motion information of the imaging device.

[0048] The memory, connected with the processor, is used for storing the indoor map and the map database.

[0049] The display is connected with the processor and is used for displaying the indoor map and the current position.

[0050] And a communication module, connected with the processor, for connecting the indoor positioning device with the...

Embodiment 2

[0055] This embodiment discloses an indoor positioning system based on a single LED light source, including:

[0056] Indoor LED light source, used to emit visible light carrying the identity information of the light source;

[0057] As well as an indoor positioning device, the indoor positioning device is any indoor positioning device provided in the foregoing content of the present invention.

[0058] Among them, the indoor LED light source includes: a controller and an LED lamp. The controller is used to modulate and drive the LED lamp to emit visible light carrying the identity information of the light source.

[0059]Wherein, different light sources are assigned different identity information, and the identity information of each light source can uniquely determine the indoor position coordinates of the light source.

[0060] Among them, the indoor positioning device is used to photograph the light source, decode the image of the light source to obtain the identity info...

Embodiment 3

[0065] This embodiment discloses an indoor positioning method based on a single LED light source, including:

[0066] Step 1: The image sensor is placed horizontally under the light source, and the first frame of image is taken for a single LED light source.

[0067] Step 2: Move the image sensor a certain distance horizontally, and take a second frame of image for the same LED light source.

[0068] Step 3: The motion sensor detects the motion distance S of the mobile terminal (image sensor) 1 , the detected data is handed over to the processor for further analysis and calculation. When the processor judges that the movement distance of the indoor positioning device is too small (or not moving) and does not meet the requirements, the processor sends an instruction to prompt the indoor positioning device to continue moving, and repeat the steps 2.

[0069] Wherein, the indoor positioning device includes: an image sensor, a motion sensor, a processor and a memory.

[0070] S...

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Abstract

The invention discloses a high-precision single-LED light source indoor positioning device, system and method. The method comprises the steps that: an image sensor continuously obtains two frames of single-LED light source images, and a moving sensor is utilized to record moving information of an imaging device; the single-LED light source images are decoded, identification information of an LED light source is extracted, and coarse-grained positioning information is obtained; difference processing is carried out on the two continuous frames of LED light source images, a superposed LED light source image is obtained, and imaging of the same LED light source on two different positions exists on the image; according to the imaging positions of the LED light source on the superposed imaged and combined with the moving information and the coarse-grained positioning information, obtaining the current precise position by means of calculation according to geometrical relations. The high-precision single-LED light source indoor positioning device, system and method solve the problem that precise positioning relies on a plurality of light sources or image sensors in an existing LED positioning technology, the positioning precision under a single LED light source is improved, and the flexibility of the layout design of the light source is improved.

Description

technical field [0001] The invention relates to the fields of optical communication and indoor positioning, in particular to a high-precision single LED light source indoor positioning device, system and method. Background technique [0002] In recent years, with the wide application of LED in various fields such as lighting, communication and sensing technology, visible light communication (Visible Light Communication, VLC) has the advantage of being used for lighting and communication at the same time, and is considered to have great development potential and application prospects. Technology. [0003] The positioning technology based on VLC uses LED as the light source, and can provide indoor positioning services in places where LED lighting is used. Compared with the existing positioning technology, it has many advantages, including no electromagnetic interference, no radio frequency radiation interference, and high positioning accuracy. [0004] The existing VLC-based...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S1/70
CPCG01S1/70
Inventor 方俊彬陈哲张军赵晓萌杨桢
Owner JINAN UNIVERSITY
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