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Indoor positioning method and equipment

An indoor positioning and equipment technology, applied in the field of positioning, can solve the problems of positioning speed to be improved, complex algorithms, inaccurate fingerprint matching, etc.

Active Publication Date: 2017-03-29
NANJING ZHONGXING XIN SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of indoor placement (furniture, temporary), changes in the transmit power of reference equipment used for positioning, etc., the signal strength received by the terminal at the same location will also change accordingly, resulting in inaccurate fingerprint matching.
Moreover, the algorithm for direct positioning through signal strength is more complicated, and the positioning speed needs to be improved

Method used

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  • Indoor positioning method and equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0120] In this embodiment, the reference device used for indoor positioning is a short-range wireless communication device. The short-range wireless communication device includes one or more of the following devices: Bluetooth devices, WIFI devices, ZigBee (a low-power local area network protocol based on the IEEE802.15.4 standard) devices, wireless local area network devices, ultra-wideband devices, and Near field communication equipment. Clustering reference devices to generate fingerprints can ensure that the fingerprints generated at the same location are relatively stable, and avoid the interference of random Bluetooth devices such as smart phones on positioning.

[0121] The reference devices in this embodiment are all described by taking a Bluetooth device as an example, and the corresponding terminal to be located is described by taking a smart phone with a Bluetooth function as an example.

[0122] The reference equipment is pre-deployed. In one example, the indoor plane...

application example 1

[0220] In this example, the grid is divided according to the indoor plane distribution map, the reference point is determined, and Bluetooth devices are deployed.

[0221] Reference point set G such as figure 1 Shown. Each grid vertex (that is, the intersection of the lines) in the grid in the figure is a reference point. As an example, the reference points are sequentially coded as G1 to Gn from left to right and bottom to top. The figure shows part of the codes, for example, the codes of the reference points in the bottom row are G1, G2, G3, G4, G5, G6, G7, G8,..., G13, other codes and so on. image 3 The distance between the vertices of the adjacent grids is a=P, and P is the set positioning accuracy, such as P=50cm.

[0222] The Bluetooth device set B as the reference device such as figure 2 Shown. The Bluetooth device is deployed at each grid vertex of the grid in the figure. As an example, the Bluetooth device is coded from left to right and bottom to top. The figure shows...

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Abstract

The invention discloses an indoor positioning method and indoor positioning equipment. The equipment comprises a fingerprint generation module used for clustering corresponding reference equipment according to signal strength of the reference equipment collected by a terminal to be positioned, and generating a fingerprint of a point to be positioned where the terminal to be positioned is located; a fingerprint matching module used for matching the fingerprint of the point to be positioned with a stored fingerprint of a reference point, and determining an adjacent reference point; and a location determining module used for determining the location of the point to be positioned according to the stored position of the adjacent reference point, wherein the fingerprint of the reference point is generated by clustering the corresponding reference equipment according to the signal strength of the reference equipment collected by the terminal on the reference point; and the reference equipment is a pre-deployed short-distance wireless communication equipment. According to the indoor positioning method and system, indoor positioning accuracy can be improved, good adaptation is provided, the system with complicate framework is not needed, and a special chip is also not needed to be installed in intelligent equipment.

Description

Technical field [0001] The present invention relates to positioning technology, and more specifically, to an indoor positioning method and equipment. Background technique [0002] Generally, outdoor positioning mainly relies on satellite positioning systems or wireless network signals. The satellite positioning system has high accuracy, but the disadvantage is that it must be able to receive satellite signals. Once indoors, the positioning method will fail. The wireless network signal has a room sub-system, but the positioning accuracy is generally poor and can only reach 100 meters. The above traditional positioning methods are not suitable for indoor smart terminal positioning. [0003] Some indoor positioning requires high accuracy. Within 1 meter, the positioning delay is less than 1 second. In recent years, some technology giants, including Google, Microsoft, Apple, Broadcom, etc., as well as some world-renowned universities are studying Indoor positioning technology. Appl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/04
CPCH04W4/04G01S5/02525
Inventor 陈孝卫
Owner NANJING ZHONGXING XIN SOFTWARE CO LTD
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