Indoor real-time positioning method based on BIM and Bluetooth technologies

Abstract

The invention relates to an indoor real-time positioning method based on BIM and Bluetooth technologies. The indoor real-time positioning method comprises the following steps of (1) installing a plurality of Bluetooth gateways in a building; (2) establishing a three-dimensional monitoring BIM model of the building according to the layout of the building; (3) placing a Bluetooth terminal on an object or a person needing to be positioned; (4) when the Bluetooth terminal enters the signal coverage range of the Bluetooth gateway, using the Bluetooth gateway to monitor the signal transmitted by the Bluetooth terminal, identify the Bluetooth terminal and obtain the information of the Bluetooth terminal, and using the Bluetooth gateway to transmit the obtained information of the Bluetooth terminal to the monitoring platform; and (5) calculating the BIM-based coordinates of the Bluetooth terminal by the monitoring platform, and displaying the coordinates in a three-dimensional monitoring BIM model by using corresponding icons according to basic information of personnel or objects, thereby monitoring the positions of the personnel or the objects in real time. According to the method, a Bluetooth 5.1 technology is adopted to display a three-dimensional physical graph by means of BIM, and the positioning precision reaches a centimeter level.

Description

technical field [0001] The invention relates to the technical field of real-time positioning, in particular to an indoor real-time positioning method based on BIM and Bluetooth technology. Background technique [0002] Today's large-scale shopping malls gather a large number of stores, occupy a large area, and provide a wide variety of commodities. The main products are clothing, textiles, household goods, food and entertainment products. In order to allow customers to quickly find the products they need to buy, there will be some shopping guides inside the mall. Existing shopping guide measures generally include shopping guide service desks, print media advertisements, location guide signs, etc. These shopping guide measures occupy a large area and space, are relatively simple in communication, and lack interaction; and when information changes, it is laborious to change the shopping guide measures It is easy to cause waste of resources. In addition, the current shopping ...

AI Technical Summary

Problems solved by technology

[0004] 1. The WI-FI positioning technology relies on the Wi-Fi hotspot location distribution database or the received signal strength fingerprint database to achieve positioning. The main problem to be solved is to reliably generate and dynamically maintain the database, and at the same time, it must be low-complexity, so that it can be used in a large number of used in the construction of

[0005] 2. The overall positioning accuracy of ultrasonic positioning is high and the structure is simple, but ultrasonic is greatly affected by multipath effects and non-line-of-sight propagation, and requires a large amount of investment in underlying hardware facilities, and the cost is too high

[0006] 3. Satellite positioning technology is indoors, and satellite signals are easily blocked by buildings, resulting in the inability to achieve positioning, and cannot distinguish floor information, and cannot achieve accurate positioning

not suitable for indoor

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