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Method for fast layout of positioning anchor points in UWB indoor positioning system

An indoor positioning and positioning anchor technology, which can be applied to services based on location information, services based on specific environments, and electrical components. The effect of duration, fast and precise placement of anchor points

Active Publication Date: 2019-03-08
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The 8 anchor points in the system are located at the 8 vertices of the cuboid. Usually, multiple mechanical measurements are required to determine the position of the anchor points, which is time-consuming and laborious, and inevitably introduces measurement errors.
The introduction of measurement error will lead to the distortion of the positioning space, which will reduce the accuracy of the positioning system.

Method used

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  • Method for fast layout of positioning anchor points in UWB indoor positioning system
  • Method for fast layout of positioning anchor points in UWB indoor positioning system
  • Method for fast layout of positioning anchor points in UWB indoor positioning system

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Embodiment Construction

[0033] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0034] The present invention provides a method based on the fast layout of positioning anchor points in the UWB indoor positioning system, providing a UWB three-dimensional positioning system (such as figure 1 shown), including 8 anchor points, the anchor points are all made up of a wireless interface, a serial port, a display screen and a UWB positioning module; the 8 anchor points are located at 8 vertices of a cuboid, forming a three-dimensional positioning area; The 8 anchor points are divided into four groups of A0 / A4, A1 / A5, A2 / A6, and A3 / A7, and the two anchor points of each group are fixed on the anchor rods perpendicular to the ground; the method for fast layout of anchor points is realized as follows :

[0035] Construct four anchor points A0, A1, A2, and A3 near the ground to make it a required rectangle; take A0 as the origin...

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Abstract

The invention relates to a method for fast layout of positioning anchor points in a UWB indoor positioning system. An ultra-wideband (UWB) wireless communication technology and a TD-TWR algorithm areadopted in the positioning system; eight UWB positioning anchor points are used as a reference; each anchor point adopts the TD-TWR algorithm to obtain a distance between each anchor point and each ofother anchor points; and after an original point and a baseline are determined, placement is carried out through a returned geometric relation between a distance measuring value and each anchor point. According to the method, the defects of long time and low precision of mechanical measurement during anchor point layout are overcome, so that the anchor points can be quickly and accurately laid inthe UWB indoor positioning system.

Description

technical field [0001] The invention relates to a method for fast layout of positioning anchor points in a UWB indoor positioning system, in particular to a method for fast layout of positioning anchor points in a UWB indoor positioning system that can work in indoor and outdoor small areas. Background technique [0002] Ultra-wideband (UWB) is a carrier-free communication technology that uses nanosecond to microsecond-level non-sinusoidal narrow pulses to transmit data. It has the characteristics of low transmission power, fast transmission speed, large channel capacity, and strong anti-interference. Its high time resolution and short wavelength strengthen its ability to resist multipath interference and fading, so UWB signals are very suitable for use in indoor environments. [0003] UWB-based indoor positioning systems usually use time-division TDoA technology to locate by detecting the time difference between signals arriving at two anchor points. Because TDoA does not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W4/021H04W4/33H04W64/00
CPCH04W4/02H04W4/021H04W4/023H04W4/33H04W64/00
Inventor 林和志石青洲李汉波章绍晨欧阳小敏黄联芬
Owner XIAMEN UNIV