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A Bluetooth positioning method, device, equipment and system based on adjacent node groups

An adjacent node, Bluetooth positioning technology, applied in location-based services, wireless communications, electrical components, etc., can solve the problems of increased cost, inaccuracy, and high cost of sample collection, to improve accuracy and ease of use, cost reduction effect

Active Publication Date: 2021-11-30
GUANGZHOU HKUST FOK YING TUNG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for the first scheme, because the signal strength is greatly affected by environmental factors (temperature, humidity, physical occlusion, etc.), the actual distance value calculated by it is also extremely unstable and inaccurate; for the second scheme In this solution, the sample collection cost is extremely high when training the database, and any indoor scene change / re-segmentation will cause the fingerprint database in this area to fail, and it is necessary to collect and train again, resulting in an increase in cost

Method used

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  • A Bluetooth positioning method, device, equipment and system based on adjacent node groups
  • A Bluetooth positioning method, device, equipment and system based on adjacent node groups
  • A Bluetooth positioning method, device, equipment and system based on adjacent node groups

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Experimental program
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Embodiment 1

[0042] see figure 1 , figure 1 It is a flowchart of a Bluetooth positioning method provided by an embodiment of the present invention; including:

[0043] S1. Obtain the Bluetooth signals of several detected Bluetooth nodes within a preset time; wherein, the Bluetooth signals are greater than the preset signal strength;

[0044]S2. According to the detected Bluetooth signal of each Bluetooth node, search for the corresponding pre-divided adjacent node group; wherein, the adjacent node group uses any Bluetooth node as the central node, including the central node and several adjacent Bluetooth nodes;

[0045] S3. Obtain the best adjacent node group according to the number of the Bluetooth nodes that can detect the Bluetooth signal in each adjacent node group;

[0046] S4. Calculate the weight of the Bluetooth node according to the detected Bluetooth signal strength of each Bluetooth node in the best adjacent node group, and calculate the positioning coordinates according to t...

Embodiment 2

[0065] see image 3 , image 3 It is a schematic structural diagram of a Bluetooth positioning device 10 based on an adjacent node group provided by an embodiment of the present invention; it includes:

[0066] The signal detection unit 11 is used to acquire the bluetooth signals of several bluetooth nodes detected within the preset time; wherein, the bluetooth signal is greater than the preset signal strength;

[0067] The adjacent node group search unit 12 is used to search for the corresponding pre-divided adjacent node group according to the detected Bluetooth signal of each Bluetooth node; wherein, the adjacent node group is defined by any Bluetooth node a central node, including the central node and several adjacent bluetooth nodes;

[0068] The optimal adjacent node group obtaining unit 13 is used to obtain the optimal adjacent node group according to the number of the Bluetooth nodes that can detect Bluetooth signals in each adjacent node group;

[0069] The positio...

Embodiment 3

[0088] see Figure 4 , Figure 4 It is a schematic structural diagram of a Bluetooth positioning device 20 based on an adjacent node group provided by an embodiment of the present invention; the Bluetooth positioning device 20 based on an adjacent node group in this embodiment includes: a processor 21, a memory 22, and stored in the A computer program in memory 22 and executable on said processor 21. When the processor 21 executes the computer program, it implements the steps in the above embodiments of the Bluetooth positioning method based on the adjacent node group, for example figure 1 Steps S1-S4 are shown. Alternatively, when the processor 21 executes the computer program, it realizes the functions of the modules / units in the above-mentioned device embodiments, such as the signal detection unit 11 .

[0089] Exemplarily, the computer program can be divided into one or more modules / units, and the one or more modules / units are stored in the memory 22 and executed by the...

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PUM

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Abstract

The invention discloses a bluetooth positioning method based on adjacent node groups, which includes: acquiring the bluetooth signals of several bluetooth nodes detected within a preset time; The pre-divided adjacent node group; According to the number of the Bluetooth nodes that can be detected in each of the adjacent node groups, the best adjacent node group is obtained; according to the detected optimal The Bluetooth signal strength of each Bluetooth node in the adjacent node group is used to calculate the weight of the Bluetooth node, and the positioning coordinates are calculated according to the weight of the Bluetooth node. The embodiment of the invention also discloses a bluetooth positioning device, device and system based on the adjacent node group. By adopting the embodiment of the present invention, there is no need to directly fit the relationship between the signal strength and the actual distance, which improves accuracy and ease of use, eliminates the need for pre-collected data training databases, and reduces costs.

Description

technical field [0001] The present invention relates to bluetooth positioning technology, in particular to a bluetooth positioning method, device, equipment and system based on adjacent node groups. Background technique [0002] With the rapid development of the city, large buildings such as large underground parking lots and shopping centers continue to emerge. In the aforementioned indoor environment, people hope to quickly determine their location and find their desired destination. The Bluetooth positioning technology used in the prior art includes the following two types, one is to collect the signal strength value of the Bluetooth node online by the smart terminal and directly establish the relationship between the signal strength and the actual distance through some mapping methods such as fitting; During training, the fingerprint vector data of the offline Bluetooth module of the smart terminal is stored to obtain a fingerprint-position mapping database resource. Wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02H04W4/80H04W64/00
Inventor 王周红张骁张弢陈辞高民
Owner GUANGZHOU HKUST FOK YING TUNG RES INST