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Indoor navigation method and indoor navigation method device

An indoor navigation and indoor map technology, applied in the field of indoor navigation, can solve the problems of difficult to achieve accurate positioning, unstable GPS signal, low accuracy, etc.

Active Publication Date: 2016-10-26
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the unstable GPS signal in large buildings and the low accuracy of GPS-based positioning methods in the vertical direction, it is difficult to achieve accurate positioning inside buildings
Using positioning methods based on ZigBee protocol (ZigBee), Bluetooth, radio frequency identification (Radio Frequency Identification, RFID) and other technologies requires a certain number of hardware devices to be installed, and the application economy in large public buildings is poor and will increase significantly. cost of operation and maintenance

Method used

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  • Indoor navigation method and indoor navigation method device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] figure 1 This is a flowchart of an indoor navigation method provided in the first embodiment of the present invention. This embodiment is applicable to situations where users need to locate in a public building. The method can be executed by an indoor navigation client installed on a mobile terminal Or as an independently installed plug-in to be used in conjunction with the indoor navigation client, the method of this embodiment specifically includes the following steps:

[0073] Step 110: Obtain the signal strength of at least three wireless access hotspots scanned at the current location point.

[0074] Among them, through the built-in wireless communication components of the mobile terminal, the signal strength of the wireless access hotspots set in the building is obtained. Because the user is in the building, which is a three-dimensional space, the signal strengths of at least three wireless access hotspots need to be obtained , Used to locate the user’s current locati...

Embodiment 2

[0085] figure 2 This is a flow chart of an indoor navigation method provided in the second embodiment of the present invention. The technical solution of this embodiment is based on the above-mentioned embodiment and is further refined. The weighted k-nearest neighbor algorithm based on probability inference is used to determine that the user is currently The location in the building, where step 120 includes:

[0086] Step 210: Acquire an indoor hotspot identification template vector APid, where APid=(APid 1 , APid 2 ,..., APid l ), l∈[1, L], APid l Represents the wireless access hotspot identification name at the l-th position of the template vector, and L is the total number of wireless access hotspots configured indoors; the client can obtain the indoor hotspot identification template vector from the server through the wireless network.

[0087] Step 220: Generate a first signal strength vector s according to the scanned signal strengths of the at least three wireless access hot...

Embodiment 3

[0100] Figure 4 This is a flowchart of an indoor navigation method provided in the third embodiment of the present invention. The technical solution of this embodiment is based on the above-mentioned embodiment and is further refined. Before step 130, it further includes:

[0101] Step 410: Send a request for downloading the fingerprint library of the preset location to the server;

[0102] Step 420: Receive the preset location fingerprint library sent by the server.

[0103] Among them, the preset location fingerprint library stored in the server includes fingerprint location information and coordinate information of each preset fingerprint point. After receiving the preset location fingerprint library sent by the server, the indoor navigation client obtains it from the preset location fingerprint library Preset fingerprint location information and coordinate information of fingerprint points.

[0104] For example, the server uses an ARM9-based embedded system, and its basic hardwar...

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Abstract

The invention discloses an indoor navigation method and an indoor navigation method device. The indoor navigation method includes the following steps that: the signal intensity of at least three wireless access hot points scanned at a current position point is acquired; current position information corresponding to the current position point is generated according to the signal intensity of the at least three scanned wireless access hot points; the similarities of the current position point and each preset fingerprint point are determined according to the current position information and the fingerprint position information of at least two preset fingerprint points; a position estimation fingerprint point corresponding to the current position point is selected from the preset fingerprint points according to the similarities; and the coordinate information of the current position point is determined according to the coordinate information of the position estimation fingerprint point and the correlation degree of the position estimation fingerprint point and the current position point. According to the indoor navigation method and the indoor navigation method device of the invention, indoor positioning can be provided for a user by using a wireless local area network in a building, and additional hardware equipment is not required to be adopted, deployment cost is low, and the method is easy to implement.

Description

Technical field [0001] The embodiment of the present invention relates to indoor navigation technology, and in particular to an indoor navigation method and device. Background technique [0002] With the development of construction technology and the improvement of people's living needs, the scale of public buildings continues to expand, and their functions are becoming increasingly complex. In public buildings such as large-scale public transportation hubs, shopping malls, and libraries, people often cannot accurately determine where they are. In response to this problem, the design and development of an indoor navigation system that can be used in public buildings allows users to realize real-time query of indoor personnel positioning, navigation and various information on smart devices. [0003] Because GPS signals in large buildings are unstable, and the accuracy of GPS-based positioning methods in the vertical direction is low, it is difficult to achieve accurate positioning ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/02
CPCG01S5/0278
Inventor 李盟杨静轧超杨国庆陈冰陈建辉张静梅庞毅
Owner TIANJIN CHENGJIAN UNIV