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
CN110426673AActive Publication Date: 2019-11-08ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2019-11-08

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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.
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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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