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Combined indoor positioning method

A fingerprint positioning and aspect technology, which is used in measuring devices, instruments, surveying and mapping, and navigation, etc., can solve the problems of high energy consumption, affecting accuracy, and interference of locators, and achieve the effect of improving GPS positioning accuracy, low cost, and wide application.

Active Publication Date: 2017-03-22
王庆文
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AI Technical Summary

Problems solved by technology

However, whether it is used for indoor or outdoor positioning, the W1-Fi transceiver can only cover an area within a radius of 90 meters, and is easily interfered by other signals, thereby affecting its accuracy, and the energy consumption of the locator is also high

Method used

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0047] The method of the present invention is mainly divided into two stages: an offline stage and an online stage. In the offline stage, it mainly completes the fingerprint collection of wifi or bluetooth, and the marking of the electronic map; in the online stage, it completes three parts: rough fingerprint positioning, mobile mode determination, particle filter positioning and navigation.

[0048] Offline phase:

[0049] The first part, fingerprint information collection;

[0050] The second part, electronic map labeling.

[0051] Online phase:

[0052] The first part, wifi or bluetooth coarse positioning;

[0053] The second part, the mobile mode is determined, and the initial step size is set;

[0054] The third part, positioning and navigation.

[0055] The first part of the offline phase:

[0056] Fingerprint information collection. For g...

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Abstract

The invention provides a combined positioning method based on inertial navigation, wi-fi or bluetooth signal fingerprints and an indoor electronic map, and can be widely applied in indoor positioning and seamless combination of indoor and outdoor positioning. The combined positioning method is characterized by comprising the steps: 1) coarse positioning is performed via the wifi or bluetooth network, then through an inertial navigation system of an intelligent terminal and with combination of the map, a precise position of a customer is obtained, and a walking track of the customer is real-timely and continuously obtained; 2) based on formation and use of the electronic map of an indoor planar graph, an indoor electronic map labeling method is included; 3) a particle filtering algorithm combining the several factors together includes detection of a moving state, detection and adjustment of the step length, the step direction and the step frequency, adaption for the electronic map and the wifi (bluetooth) signal fingerprints and the like; 4) based on a map matching algorithm, a correct and accurate walking path is guaranteed; and 5) the terminals not only include intelligent mobile phones and panel personal computers and also include intelligent wearable devices.

Description

technical field [0001] The invention relates to the field of mobile terminal application and the field of location-based online and offline (o2o) fusion, in particular to a combined indoor positioning method. Background technique [0002] In daily life, human beings spend most of their time indoors. In an unfamiliar large indoor environment such as hospitals, exhibition halls, railway stations, terminal buildings, parking lots, etc., there is often a need for fast indoor positioning and navigation. Therefore, indoor positioning It has great market prospect and application value. With the rapid development of science and technology, the functions of smart phones are becoming more and more powerful. People's life travel and positioning are increasingly dependent on mobile phones. Although there are also many GPS-based map software that can help people locate and navigate, due to the increasing number of large shopping malls and large venues, GPS cannot penetrate buildings bec...

Claims

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Application Information

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IPC IPC(8): G01C21/16
CPCG01C21/165
Inventor 王庆文
Owner 王庆文
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