Wavelength division multiplexing-based visible light positioning communication method and system

A communication method and wavelength division multiplexing technology, applied in the direction of radio wave measurement system, positioning, short-distance system, etc., can solve the problems of complex equipment system, limited positioning range, high environmental requirements, etc., to achieve extended standby time, good electromagnetic Compatibility, the effect of maintaining electromagnetic compatibility

Active Publication Date: 2019-11-08
ZHEJIANG UNIV
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  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a visible light positioning communication method and system based on wavelength division multiplexing, which solves the high environmental requirements, limited positioning range, and equipment system requirements for plane position positioning and communication technology in the prior art. Complex and costly to use

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  • Wavelength division multiplexing-based visible light positioning communication method and system
  • Wavelength division multiplexing-based visible light positioning communication method and system
  • Wavelength division multiplexing-based visible light positioning communication method and system

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Embodiment Construction

[0027] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help the understanding of the present invention, but do not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] like figure 1 As shown, firstly, four LED lighting strips 2, 3, 4 and 5 are arranged horizontally on the four walls of the rectangular indoor space 1 to be positioned. The four LED lighting strips are installed in the center of the wall, and Keep the installation height the same, and make the lengths of the four LED lighting strips consistent and relatively aligned. Two LED lamp beads, A and B, are installed on the four LED lighting strips. The lamp bead A glo...

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Abstract

The invention discloses a wavelength division multiplexing-based visible light positioning communication method and system. According to the method and system, LED illuminatinglight strips with red lamp beads and blue lamp beads are arranged in a rectangular indoor space, a photoelectric detector with a red light filter, a photoelectric detector with a blue light filter and a mobile platform internally provided with mobile platform control are placed in the rectangular indoor space, and a wavelength division multiplexing technology is adopted, so that indoor environmental positioning is completed and unidirectional communication is realized; visible light frequency band pulse modulation signals are adopted and electromagnetic infection is not generated, so that benefits are brought to keepfavorable electromagnetic compatibility, thereby realizing positioning and effectively feeding electricity to various terminal devices through extracting the energy in received signals; and the fourLED illuminatinglight strips have the same average light intensity and belong to strip-shaped distributed light sources so as to easily realize the uniform illumination for large-area spaces, and theflicker frequency is far higher than the human eye perception range (above 1 kHZ) so that the positioning and communication functions do not influence the illumination quality.

Description

technical field [0001] The invention relates to the technical field of plane position positioning, in particular to a visible light positioning communication method and system based on wavelength division multiplexing. Background technique [0002] As a mature wireless positioning technology, GPS navigation has been widely used in outdoor environments. When people's frequent activities are in tunnels, underground and other sheltered environments and indoor environments and there is a need for positioning, GPS positioning cannot be used due to the poor signal received. To solve this problem, people began to explore different indoor positioning technologies. For example, the use of wireless local area network, Bluetooth technology, ultrasonic technology and infrared technology. These technologies determine the relative position of the moving target and fixed units through the communication between them, and then infer the actual position of the target. However, they often n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/16H04B10/116
CPCG01S5/16H04B10/116
Inventor 徐敬林佳明赵苗苗
Owner ZHEJIANG UNIV
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