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Indoor positioning method based on Wi-Fi, Bluetooth and PDR integrated positioning

A technology that integrates positioning and indoor positioning. It is used in positioning, transmission systems, wireless communications, etc., and can solve problems such as complex indoor environments.

Pending Publication Date: 2019-10-11
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether it is Wi-Fi, Bluetooth Beacon or PDR, because the indoor and outdoor environments are different, the indoor environment is relatively complex, and the characteristics of different places are completely different. At present, a single technology cannot meet the needs of accuracy, deployment, and cost at the same time. Fusion Positioning will definitely become the development direction of indoor positioning

Method used

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  • Indoor positioning method based on Wi-Fi, Bluetooth and PDR integrated positioning
  • Indoor positioning method based on Wi-Fi, Bluetooth and PDR integrated positioning
  • Indoor positioning method based on Wi-Fi, Bluetooth and PDR integrated positioning

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Embodiment

[0061] like figure 1 Shown, a kind of indoor positioning method based on Wi-Fi, bluetooth and PDR fusion positioning, comprises the following steps:

[0062] 1) Deploy the Wi-Fi environment in the area to be located, and establish a Wi-Fi offline fingerprint database by collecting the Wi-Fi signal strength value RSSI of each small area in the area to be located in the offline stage;

[0063] 2) Collect the Wi-Fi signal RSSI value in the online phase, and realize Wi-Fi positioning by improving the weighted centroid positioning algorithm;

[0064] 3) Deploy Bluetooth devices in the area to be positioned, collect Bluetooth RSSI values, and realize Bluetooth positioning by improving the weighted centroid positioning algorithm;

[0065] 4) Realize Wi-Fi and Bluetooth fusion positioning through average weighting;

[0066] 5) Use the step size model to match the results of the acceleration sensor to perform PDR positioning;

[0067] 6) The final positioning result is obtained by m...

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Abstract

The invention discloses an indoor positioning method based on Wi-Fi, Bluetooth and PDR integrated positioning. The method comprises the steps that (1) a Wi-Fi environment is deployed in a to-be-positioned region, and a Wi-Fi offline fingerprint database is established by collecting Wi-Fi signal strength values RSSI of all sub-regions in the to-be-positioned region at an offline stage; (2) Wi-Fi signal RSSI values are collected at an online stage, and Wi-Fi positioning is realized through an improved weighted centroid localization algorithm; (3) Bluetooth equipment is deployed in the to-be-positioned region, Bluetooth RSSI values are collected, and Bluetooth positioning is realized through the improved weighted centroid localization algorithm; (4) Wi-Fi and Bluetooth integrated positioningis realized through average weighting; (5) a step model is utilized to match acceleration sensor results, and PDR positioning is performed; and (6) Wi-Fi, Bluetooth and PDR are integrated through a UKF algorithm to obtain a final positioning result. The positioning method is high in positioning precision, small in positioning error and good in effect.

Description

technical field [0001] The invention relates to the technical field of indoor positioning, in particular to an indoor positioning method based on Wi-Fi, Bluetooth and PDR fusion positioning. Background technique [0002] With the rapid development of the location-based service industry, people's demand for location-based services has increased. At present, relatively mature GPS and Beidou positioning only support outdoor positioning. All aspects need to be improved. Mainstream indoor positioning technologies include Wi-Fi positioning, Bluetooth positioning, PDR positioning, ultra-wideband positioning, and geomagnetic positioning. Various positioning technologies have different advantages and disadvantages due to different positioning methods. Table 1 shows the advantages and disadvantages of several mainstream indoor positioning technologies. pros and cons. [0003] Table 1 Comparison of different indoor positioning technologies [0004] [0005] Wi-Fi positioning main...

Claims

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Application Information

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IPC IPC(8): G01S5/02G01S5/10G01C21/16G01C21/20H04W64/00H04B17/318
CPCG01S5/0257G01S5/10G01C21/165G01C21/206H04W64/006H04B17/318
Inventor 朱奕杰王中帅关善文蓝如师罗笑南
Owner GUILIN UNIV OF ELECTRONIC TECH
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