Indoor positioning system combined with Bluetooth Beacon and smartphone and positioning method thereof

Abstract

The invention discloses an indoor positioning system combined with a Bluetooth Beacon and a smartphone and a positioning method thereof. The system comprises a Bluetooth Beacon, a smartphone and a server, wherein the smartphone is integrated with an accelerometer module and a magnetometer module, has a network function, and can be connected with the server through 3G, 4G or WiFi to upload locationdata after obtaining user permissions; the server acquires the uploaded location data of a user, and then processes the data according to the requirements of a system designer. The method comprises the following steps: deploying the Bluetooth Beacon, and setting an initial location; enabling the user to open Bluetooth and execute client applications, and real-timely positioning and monitoring a Bluetooth Beacon signal; when the user monitors a predeployed Beacon signal, determining whether the distance is within a threshold, and if yes, executing a filtering algorithm; setting a Bluetooth module of the smartphone as a full duplex mode; and uploading a positioning result to the server after obtaining the user permissions. According to the method disclosed by the invention, the positioningaccuracy with an error within 5 meters can be ensured, and a low deployment cost can be achieved.

Description

technical field [0001] The present invention relates to an indoor positioning system, in particular to an indoor positioning system and a positioning method that combines Bluetooth Beacon and smart phones and uses the characteristics of Bluetooth duplex communication to increase the number of users for position correction at the same time. It belongs to the field of indoor positioning. Background technique [0002] The popularity of GPS (Global Positioning System, Global Positioning System) has made people have a personal experience of the convenience brought by positioning technology. Accurate and real-time location information is very important for commercial promotion and public utility construction. Since modern people spend most of their time in buildings, the positioning requirements in indoor environments are gradually becoming clearer. GPS, a leading technology that meets outdoor positioning requirements, will greatly attenuate and change its signal in indoor environ...

AI Technical Summary

Problems solved by technology

However, the traditional PDR also has significant shortcomings: limited by the IMU (Inertial Measurement Unit) hardware used in the positioning process, each step of the collected walking information will generate errors, and the information with errors will be accumulated, resulting in a decrease in positioning accuracy

[0008] In summary, the existing positioning methods have their own problems: triangulation positioning is highly dependent on signals, and the instability of signals leads to relatively accurate positioning within a certain range; fingerprint positioning requires a lot of work in collecting sample points in the offline stage, and with When the environment changes, fingerprints need to be collected again, which has high labor costs; the nearest neighbor positioning method relies on the deployment of a large number of AP points, and the hardware cost is high

At the same time, these three types of methods are unable to locate in real time

Although PDR meets the needs of real-time positioning, it still has the problem of large errors

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