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Multi-receiving-point geometrical center locating system and method for visible light communication

A technology of visible light communication and geometric center, applied in the field of visible light communication, can solve the problems of complex system calculation and so on

Active Publication Date: 2015-01-21
白盒子(上海)微电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These positioning methods generally have only one receiving device, which is the positioning target, and traditional positioning schemes require exhaustive traversal, and the system calculation is complex

Method used

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  • Multi-receiving-point geometrical center locating system and method for visible light communication
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  • Multi-receiving-point geometrical center locating system and method for visible light communication

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings.

[0039] Such as Figure 1-5 As shown, the present invention discloses a multi-receiving point geometric center positioning system and method in an indoor visible light communication system. For an indoor visible light communication system, several LED lights and a terminal carrying several receiving devices are arranged, and the terminal target to locate. A multi-receiving point geometric center positioning system and method in an indoor visible light communication system, comprising the following steps:

[0040] 1) Arrange several LED lamps with the same signal transmission power on the indoor ceiling as the optical signal transmitting end; configure several light receiving devices on the terminal that needs to be positioned as the signal receiving end, and the several light receiving devices are based on the geometry of the terminal. The center point is arranged as ...

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Abstract

The invention discloses a method for precise locating through an indoor visible light communication system, and belongs to the field of visible light communication. LED lamps of any number are arranged indoors, the signal emitting power of the LED lamps is set to be equal, the absolute position of each LED lamp is fixed and known, a plurality of receiving devices are configured on a terminal needing to be located, the relative positions of the receiving devices are known, the light signal power of the receiving devices on the terminal is measured, the geometrical center position of the receiving devices is calculated and determined, and the position coordinates of the terminal can be obtained. A visible light locating system is suitable for existing common mobile terminal equipment such as a mobile phone with multiple cameras and a portable tablet personal computer, the simple position estimation expression is built by the locating method through the characteristic that the relative positions of the receiving points are known, locating calculation efficiency is high, and precision is high.

Description

technical field [0001] The invention relates to a multi-receiving point geometric center positioning system and method in an indoor visible light communication system, belonging to the field of visible light communication. Background technique [0002] With the development of outdoor positioning, indoor positioning has recently received extensive attention and has become an increasingly hot research field. Indoor positioning mainly refers to positioning people or objects indoors and providing some positioning-based services, such as private services, automated robot control, mobile commerce, tracking services, and navigation assistance. So far, many positioning-based researches have been proposed, and some technologies and products have been used for indoor positioning, such as radio frequency signal, wireless local area network (Wifi), infrared, laser (laser), ultrasonic (ultrasound) and so on. Generally speaking, radio frequency signals are the main way of indoor position...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/16
CPCG01S5/16H04B10/116H04B10/07955H04B10/502H04B10/564H04B10/60
Inventor 许威王佳张华
Owner 白盒子(上海)微电子科技有限公司
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