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Bluetooth fingerprint positioning method, device and equipment based on multi-order filtering algorithm

A filter algorithm and fingerprint positioning technology, applied in the field of positioning, can solve the problems of lower positioning efficiency, poor accuracy, and failure to meet user positioning needs, and achieve the effect of improving accuracy and reducing interference

Active Publication Date: 2022-04-12
上海图聚智能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the distance between devices is short indoors, and the ranging signal has serious reflection, diffraction and other non-linear propagation conditions, which makes the indoor positioning accuracy of the ranging algorithm poor and cannot meet the positioning needs of users.
At the same time, there is a certain delay in the positioning results when performing indoor positioning, which reduces the positioning efficiency

Method used

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  • Bluetooth fingerprint positioning method, device and equipment based on multi-order filtering algorithm
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  • Bluetooth fingerprint positioning method, device and equipment based on multi-order filtering algorithm

Examples

Experimental program
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Effect test

Embodiment 1

[0031] figure 1 It is a flow chart of a Bluetooth fingerprint positioning method based on a multi-order filtering algorithm in Embodiment 1 of the present application. The Bluetooth fingerprint positioning device is implemented, the device is realized by software and / or hardware, and is specifically configured in a positioning device, which can be a mobile positioning terminal such as a smart phone, a smart watch or a smart bracelet with a wireless signal receiving function, It can also be a server.

[0032] Such as figure 1 A Bluetooth fingerprint positioning method based on a multi-order filtering algorithm is shown, including:

[0033] S110. Acquire the current signal strength of each beacon device detected at the current moment and the historical signal strength of each beacon device detected in a historical time period, and combine them to form a sample data set for the historical time period.

[0034] Wherein, the beacon device may send wireless signals to the positio...

Embodiment 2

[0053] figure 2 It is a flow chart of a Bluetooth fingerprint positioning method based on a multi-order filtering algorithm in Embodiment 2 of the present application. The embodiment of the present application is optimized and improved on the basis of the technical solutions of the above-mentioned embodiments.

[0054] Further, the operation "according to the sample data sets of at least two historical time periods, respectively determine the initial position information of the at least two historical time periods" is refined into "a sample data set for each historical time period , according to the mapping relationship between candidate fingerprint points and candidate data sets in the fingerprint library, determine the target fingerprint points that match the sample data set to determine the initial position information; wherein, the candidate data set is in the In the area to which the candidate fingerprint point belongs, the set of reference signal strength and reference ...

Embodiment 3

[0078] image 3 It is a flowchart of a Bluetooth fingerprint positioning method based on a multi-order filtering algorithm in Embodiment 3 of the present application. The embodiment of the present application is optimized and improved on the basis of the technical solutions of the above-mentioned embodiments.

[0079] Further, the operation "according to the mapping relationship between candidate fingerprint points and candidate data sets in the fingerprint library, determine the target fingerprint points matching the sample data set" is refined into "determine the sample data set and the The distance deviation between each candidate data set contained in the fingerprint database; the candidate data set is screened according to the distance deviation, and the fingerprint point corresponding to the screened candidate data set is used as the target fingerprint point "to improve The matching mechanism of target fingerprint points.

[0080] Such as image 3 A Bluetooth fingerpri...

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Abstract

The embodiment of the present application discloses a Bluetooth fingerprint positioning method, device and equipment based on a multi-stage filtering algorithm. The method is applied to the positioning device, including: obtaining the current signal strength of each beacon device detected at the current moment, and the historical signal strength of each beacon device detected in the historical time period, and combining them to form the historical time period Sample data set; according to the sample data set of at least two historical time periods, determine the initial position information of at least two historical time periods respectively; use the initial position information of at least two historical time periods as at least two filters in the filter group The measured value of the sensor, and the corrected measured value output by the filter bank as the target position information; wherein at least two filters are cascaded. The technical solutions of the embodiments of the present application reduce the interference of noise signals when determining the target position information, thereby improving the accuracy of the finally determined target position information.

Description

technical field [0001] The embodiments of the present application relate to the field of positioning technology, and in particular to a Bluetooth fingerprint positioning method, device and equipment based on a multi-order filtering algorithm. Background technique [0002] With the popularization and commercialization of beacon positioning technology, users have put forward higher requirements for positioning effects. [0003] In the existing technology, the research on indoor positioning is usually based on the ranging algorithm. Indoor positioning is based on the ranging algorithm. Generally, the time or energy information of signal transmission and reception is used to establish a corresponding mathematical model, and the model is adjusted according to different environments. Based on the geometric relationship between the positions, the distance between known and unknown nodes is solved mathematically. [0004] However, indoors, the distance between devices is short, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W64/00H04B17/318G01S11/06
CPCH04W64/00H04B17/318G01S11/06
Inventor 王喆张杨刘鹏
Owner 上海图聚智能科技股份有限公司
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