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Indoor positioning and mobile track monitoring system and method thereof

A mobile trajectory and indoor positioning technology, applied in the direction of location information-based services, electrical components, wireless communication, etc., to achieve the effect of improving rationality, improving processing algorithms, and improving positioning accuracy

Inactive Publication Date: 2016-08-24
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current WiFi location fingerprinting system is almost only in a certain fixed scene, and there is no unified standard

Method used

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  • Indoor positioning and mobile track monitoring system and method thereof
  • Indoor positioning and mobile track monitoring system and method thereof
  • Indoor positioning and mobile track monitoring system and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The establishment of the Android mobile phone client includes:

[0030] The invention utilizes the Android development platform to create an Android project, which can be divided into four parts: the main interface, the WiFi scanning part, the database part, and the matching algorithm part.

[0031] Main interface part: it adopts the combination mode of button and dialog box, which embodies friendly human-computer interaction. Its interface is as follows: Figure 5. This system uses 3 text boxes (1 non-editable, 2 editable text boxes), 6 buttons, and 1 list. The two editable texts are used to input the horizontal and vertical coordinates of the current location, which are used for fingerprint collection and positioning, and the data type is double precision. The 6 buttons are "receive and display calculation results", "store fingerprint information", "delete fingerprint information", "display database information", "start positioning", and "exit". Have an effect. Th...

Embodiment 2

[0042] In the positioning stage, the present invention performs data analysis on different scan times of the wireless signal; when the scan times are the same, multiple experiments are performed to obtain an average value, and an optimal method is adopted for data processing. In the positioning client, it is displayed on the screen of the mobile terminal in a friendly manner.

[0043] First use the Android development platform to develop mobile positioning clients and AP signal collection tools. The system is mainly divided into the WiFi signal collection stage and the positioning stage. The overall structure of the system is as follows: figure 1 As shown, the flowcharts of the WiFi signal collection phase and the positioning phase are as follows figure 2 , 3 shown.

[0044] 1. In the WiFi signal collection module, it mainly includes the following contents:

[0045] 1) The distribution of data collection points. At present, most indoor shopping malls use square tiles, so...

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Abstract

The invention discloses an indoor positioning and mobile track monitoring system and a method thereof. No extra infrastructure is needed; and with a WiFi signal in wide coverage in a building, an indoor positioning system is designed and realized in an Android smart phone. The system is mainly applied to specific occasions like a large shopping mall or a supermarket or in a large indoor environment like a library or an airport. Therefore, a user can find his / her location conveniently and find out an exit or a bathroom conveniently. A good foundation is laid for building a platform to realize a new positioning system, updating algorithm researches, and developing the position service. On the basis of WiFi-position-fingerprint-based indoor positioning, relevant factors that include an AP position, the number, a collection time delay, and processing ways after collection and influence the positioning precision are studied. A reasonable method for improving the positioning precision is provided; the correlated AP strength processing algorithm is improved; reasonability of the original processing signal is enhanced; and the positioning speed and the accuracy are improved.

Description

technical field [0001] The invention relates to an indoor positioning and moving track monitoring system and method, belonging to the technical field of indoor positioning and wireless communication. Background technique [0002] At present, the Global Positioning System (GPS, Global Positioning System) is the most common way to obtain the location information of the outdoor environment. In recent years, with the rapid development of wireless mobile communication technology, the positioning method of Assisted GPS technology (A-GPS, Assisted Global Positioning System) combining GPS and cellular network has been widely used in emergency rescue and various location-based services (LBS, Location-Based Services) has gradually been applied. However, because satellite signals are easily blocked by various obstacles, satellite positioning technologies such as GPS / A-PGS are not suitable for indoor or tall buildings. At present, wireless indoor positioning technology has developed ra...

Claims

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Application Information

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IPC IPC(8): H04W4/02H04W64/00
CPCH04W4/029H04W64/006
Inventor 卢晓珍徐小龙孙雁飞鲁蔚锋张登银卢亚楠王勇
Owner NANJING UNIV OF POSTS & TELECOMM
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