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Indoor mixed positioning method

A technology of mixed positioning and positioning results, which is applied to services based on location information, services based on specific environments, electrical components, etc., and can solve the problem of low positioning accuracy in WiFi indoors

Active Publication Date: 2018-01-12
深圳市易景空间智能科技有限公司
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AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the shortcomings of the low accuracy of WiFi indoor positioning at present, and provides a hybrid positioning method combining indoor PDR positioning (that is, pedestrian dead reckoning positioning) and WiFi positioning, which can effectively improve the current indoor positioning accuracy and make indoor positioning With an accuracy of 1 meter to 3 meters, the method includes:

Method used

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Embodiment Construction

[0076] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0077] refer to figure 1 , figure 1 It is a main flow chart of an indoor hybrid positioning method of the present invention: the user to be positioned opens the mobile phone positioning application software within the first preset period (that is, the initial period when the user first enters the room), and obtains the PDR signal and Wi-Fi in real time through the mobile phone sensor. Fi signal; calculate Wi-Fi positioning results according to Wi-Fi positioning algorithm, store them and output them for display, and store PDR data in real time; when Wi-Fi historical data and PDR historical data reach a certain amount, it can be matched to find the walking route , initialize the starting point and azimuth to enter the next positioning period. In the next positioning period, the current positioning result is calculated...

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Abstract

The invention discloses an indoor mixed positioning method. The indoor mixed positioning method comprises the following steps: displaying the current map to obtain the relevant road network information in a first preset period; obtaining the PDR related hardware parameters and calculating a PDR trajectory in the first preset period; positioning the starting point by means of the WiFi location algorithm and the PDR trajectory, facing and entering the next positioning period; performing indoor location by means of the PDR location algorithm mainly, and carrying out similarity matching with the current PDR data and the road network data; and combining the similarity matching results with the current WiFi positioning results to detect and correct the current PDR positioning results. Accordingto the invention, the indoor positioning accuracy is further improved, and the indoor positioning accuracy can reach 1 meter to 3 meters.

Description

technical field [0001] The invention belongs to the technical field of indoor positioning, and in particular relates to an indoor hybrid positioning method. Background technique [0002] With the continuous development of Internet technology, the use of Global Positioning System (Global Positioning System, GPS) has basically been widely used in outdoor positioning, but after entering indoors, GPS basically loses positioning accuracy, so only Positioning can be carried out under the idea of ​​Bluetooth Beacon and wireless network WiFi (WIreless-FIdelity) positioning. Since the cost of laying Bluetooth Beacon is relatively high, users have fewer opportunities to open Bluetooth Beacon, and the advantage of WiFi is that it covers a wide range and requires The number of hardware is small and the layout is easy. [0003] As the rate of users turning on WiFi goes up, the prospect of researching WiFi positioning is reliable. Since the transmission of WiFi signals is not very stabl...

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Application Information

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IPC IPC(8): H04W4/02H04W4/33H04W64/00
Inventor 向伟康蔡春苗黄练李鄂江冯胜利
Owner 深圳市易景空间智能科技有限公司
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