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A multi-source joint indoor positioning method based on uwb and vlc technology

An indoor positioning and technology technology, applied in positioning, instruments, measuring devices, etc., can solve problems such as long initial alignment time and reduced accuracy, and achieve the effects of reducing interference effects, improving confidentiality, and being widely used

Active Publication Date: 2021-06-29
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the inertial positioning error increases with time, long-term use will result in reduced accuracy, and requires a long initial alignment time before use

Method used

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  • A multi-source joint indoor positioning method based on uwb and vlc technology
  • A multi-source joint indoor positioning method based on uwb and vlc technology
  • A multi-source joint indoor positioning method based on uwb and vlc technology

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Embodiment Construction

[0061] A multi-source joint indoor positioning system based on UWB and VLC technology, mainly including UWB equipment, VLC equipment, and positioning terminals. The positioning terminal includes a UWB positioning terminal, a VLC positioning terminal and a data fusion unit. The UWB and VLC positioning terminals are composed of their own LOS / NLOS judgment modules and data processing units. Such as figure 2 shown.

[0062] The positioning code information generated by the VLC device is loaded to the driving current of the LED lamp by pulse width modulation, and emitted in the form of visible light, and each LED at a certain distance corresponds to a unique ID code information, and the positioning code information is based on time division multiplexing. Use technology. When the user enters the lighting area of ​​the lamp, the LOS / NLOS discrimination module in the VLC positioning terminal compares the signal strength with the threshold based on the light coded signal received b...

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Abstract

A multi-source joint indoor positioning method based on UWB and VLC technology, relates to the technical field of indoor positioning, and solves the problem of reduced accuracy caused by long-term use of the positioning system. It mainly includes UWB equipment, VLC equipment, and positioning terminals. The positioning terminals include UWB positioning terminals, VLC positioning terminals and data fusion units; UWB and VLC positioning terminals are composed of their own LOS / NLOS judgment modules and data processing units. Adopting this scheme can realize indoor seamless high-precision positioning, reduce the interference effect of the positioning system on other communication systems, be harmless to the human body, improve the confidentiality of the system, and provide the possibility of high-speed communication. It is widely used.

Description

technical field [0001] The invention relates to the technical field of indoor positioning. Background technique [0002] With the rapid development of modernization, the number of large buildings is increasing, including a large number of large-scale comprehensive commercial centers, office buildings and other densely populated areas integrating shopping, leisure, catering, entertainment, office and other functions. Due to the complex environmental structure of such places and people's limited knowledge of the area, it is easy to cause great safety accidents and economic losses in the event of a dangerous situation, and it also increases the difficulty of rescue. Therefore, the refinement, accuracy, and seamlessness of indoor positioning are particularly important. At the same time, facing people's ever-increasing bandwidth demands, how to realize high-speed wireless access also needs to be considered in such densely populated areas. [0003] At present, there are roughly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/02G01S5/14G01S5/16H04B10/116H04W64/00
CPCG01S5/0257G01S5/14G01S5/16H04B10/116H04W64/006
Inventor 何斌陆萍李鑫
Owner TONGJI UNIV
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