Indoor positioning method based on WiFi

An indoor positioning and location point technology, which is applied to services based on location information, services based on specific environments, electrical components, etc. It can solve problems such as large positioning interference, poor positioning accuracy, and equipment that needs to be rearranged.

CN112689237AActive Publication Date: 2021-04-20四川山高聚慧物联网科技有限公司

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: 四川山高聚慧物联网科技有限公司
Publication Date: 2021-04-20

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Abstract

The invention discloses an indoor positioning method based on WiFi, and the method comprises the steps: selecting a plurality of reference position points indoors, and collecting the WiFi signal intensity of each WiFi signal source at each reference position point; performing noise reduction processing on the WiFi signal intensities of the plurality of WiFi signal sources of each reference position point to obtain a signal intensity characteristic value of each reference position point; when positioning is carried out, acquiring WiFi signal intensities of a plurality of WiFi signal sources collected by a current position point, and carrying out noise reduction processing to obtain a signal intensity characteristic value of the current position point; and performing similarity comparison on the signal intensity characteristic value of the current position point and the signal intensity characteristic value of each reference position point, and setting the reference position point with the highest similarity as the current position point. The problems that in the prior art, positioning interference is large, positioning precision is poor, and equipment needs to be rearranged for public places with different indoor patterns can be solved.

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Description

technical field

[0001] The present invention relates to the technical field of indoor positioning, in particular to a WiFi-based indoor positioning method. Background technique

[0002] Satellite positioning technology has penetrated into people's lives, and with RTK (Real-time kinematic, real-time dynamic) and other technologies, the positioning accuracy has been improved to the centimeter level, but in indoor positioning, there are still no signals or great positioning errors The problem.

[0003] At this stage, the main commercial indoor positioning methods are Bluetooth positioning and WiFi positioning. The main idea of Bluetooth positioning is to deploy a Bluetooth gateway in the area that needs to be positioned. When a user holding a Bluetooth terminal device (such as a Bluetooth bracelet) enters the Bluetooth signal coverage of the Bluetooth gateway, the Bluetooth gateway can sense the broadcast of the Bluetooth bracelet. Signal, and then measure and calculate the...

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