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Indoor positioning encoding device, indoor positioning encoding system, indoor positioning video decoding device and indoor positioning video decoding method based on LED (Light-emitting Diode)

An indoor positioning and coding device technology, which is applied in the field of indoor positioning and navigation, and can solve problems such as the limitation of system capacity by coding methods

Active Publication Date: 2017-12-19
CHENGDU ZERO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the encoding method used in the existing indoor positioning system limits the system capacity, and the purpose is to provide an LED-based indoor positioning encoding device to improve the capacity of the LED-based indoor positioning and navigation system while avoiding To solve the problem of LED flickering, the present invention also provides an LED-based indoor positioning coding system and video decoding device and method

Method used

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  • Indoor positioning encoding device, indoor positioning encoding system, indoor positioning video decoding device and indoor positioning video decoding method based on LED (Light-emitting Diode)
  • Indoor positioning encoding device, indoor positioning encoding system, indoor positioning video decoding device and indoor positioning video decoding method based on LED (Light-emitting Diode)
  • Indoor positioning encoding device, indoor positioning encoding system, indoor positioning video decoding device and indoor positioning video decoding method based on LED (Light-emitting Diode)

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Embodiment 1

[0062] Such as figure 1 As shown, this embodiment provides an LED-based indoor positioning encoding device, which includes a controller, an LED beacon light, a clock module, a power supply module, and a main LED module. The LED beacon light includes a red LED light (referred to as "R lamp" or "R primary color LED lamp"), green LED lamp (referred to as "G lamp" or "G primary color LED lamp"), blue LED lamp (referred to as "B lamp" or "B primary color LED lamp") and 3 driving power supplies, each LED lamp is connected to a driving power supply; therefore, the light primary colors emitted by the 3 LED lamps are different, which are R primary color (red), G primary color (green) and B primary color (blue); all drivers The power supply is connected to the controller;

[0063] The clock module is used to generate clock signals required for coding of lights R, G, and B;

[0064] Under the action of the clock module, the controller generates three coded signals and sends them to the...

Embodiment 2

[0072] On the basis of Embodiment 1, the LED-based indoor positioning encoding device is further improved in this embodiment. The LED-based indoor positioning encoding device also includes an infrared receiving module, and the infrared receiving module is used to receive external infrared rays The input code word and the ID number of the LED beacon light are demodulated and then input to the controller to realize the function of reconfiguring the ID number and code word of the LED beacon light.

Embodiment 3

[0074] This embodiment provides an LED-based indoor positioning video decoding device and method used in conjunction with the LED-based indoor positioning encoding device in Embodiment 1 or Embodiment 2. The decoding device includes an image acquisition unit and a decoding unit, the image acquisition unit can collect color video to obtain R, G, B three primary color images; the decoding unit includes an image storage module, an average monochrome image calculation module, a brightness value setting module, a beacon area calculation module, a brightness Cumulative value calculation module, brightness cumulative value storage module, brightness threshold calculation module, threshold comparison and decoding module, beacon light judgment module, delay digit calculation module and LED beacon light ID number output module, wherein:

[0075] The image acquisition unit is used to acquire color images, and the images are simultaneously acquired by R, G, and B three colors during acquis...

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Abstract

The invention discloses an indoor positioning encoding device, an indoor positioning encoding system, an indoor positioning video decoding device and an indoor positioning video decoding method based on an LED (Light-emitting Diode). The encoding device comprises a controller, an LED beacon light and a clock module, wherein the LED beacon light comprises three LED lamps and three drive power supplies; each LED lamp is connected with the controller through one drive power supply; lights emitted by the three LED lamps have different light primary colors; the clock module is used for producing a clock signal required for encoding; the controller produces three routes of encoding signals under the action of the clock module so as to send the signals to the three drive power supplies respectively; codons of the three routes of encoding signals are the same, but 0 to N-1 codons is delayed between each two routes of encoding signals; the LED lamps give out lights under the drive of the drive power supplies. Small brightness variation on three primary colors i.e. red, blue and green is utilized for encoding, so that the system encoding capacity is increased; meanwhile, three encoding channels adopt the same codons, and the average brightness and the color temperature are relatively fixed after the three-color LEDs are mixed, so that the flickering feeling of the LED beacon light brought to people is reduced.

Description

technical field [0001] The invention relates to the field of indoor positioning and navigation, in particular to an LED-based indoor positioning encoding device, system, and video decoding device and method. Background technique [0002] According to the survey, at present, people spend 80% to 90% of their time indoors on average, and the demand for indoor positioning services is becoming stronger and stronger. Traditional indoor positioning technology based on wireless communication cannot meet some specific requirements due to its low accuracy and poor anti-interference performance. Compared with the indoor positioning technology based on radio waves, the indoor positioning technology based on visible light communication (VisibleLight Communication, VLC) not only has lighting, but also can provide communication and positioning services based on VLC, which is becoming a research hotspot. [0003] In the Chinese invention patent with the authorized announcement number CN201...

Claims

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Application Information

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IPC IPC(8): G01C21/00H04B10/116H05B33/08H05B44/00
CPCH04B10/116G01C21/00H05B45/20H05B45/10
Inventor 陈祝明罗舰珩罗涛张新旺
Owner CHENGDU ZERO TECH
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