A method of accurate indoor positioning for firefighting based on Bluetooth training inertial navigation

Abstract

The invention relates to the field of firefighting indoor positioning and provides a firefighting precision indoor positioning method of Bluetooth trained inertial navigation, comprising the steps of performing indoor positioning by using inertial navigation devices; according to behavior characteristics of each firefighter carrying the corresponding inertial navigation device, establishing an inertial navigation characteristic database corresponding to the characteristics; acquiring training inertial navigation characteristic data of the firefighter to update the inertial navigation characteristic database; using the inertial navigation characteristic database to provide precision indoor positioning for the specific firefighter carrying the corresponding inertial navigation device. The firefighting precision indoor positioning method of Bluetooth trained inertial navigation has the advantages that inertial navigation is trained constantly by the precision Bluetooth indoor positioning method by the aid of Bluetooth, inertial navigation indoor positioning, artificial intelligence, deep learning, mass data calculation and the other techniques, the precision of inertial navigation is further improved, and accumulative errors are avoided.

Description

Technical field [0001] The invention relates to the field of fire indoor positioning, in particular to a method for accurate indoor positioning of fire fighting using Bluetooth training inertial navigation. Background technique [0002] With the rapid development of my country's economy, the number of urban complexes, high-rise buildings, underground passages, chemical companies and large-scale buildings continues to increase. Complex building structures have brought great challenges to fire fighting and rescue work. When a fire occurs indoors, there is diffuse smoke, low visibility, numerous sound sources, and chaotic order. When firefighters enter the indoor environment for fire fighting and rescue, they cannot judge their specific location, and it is difficult to travel to the designated target location for rescue. When firefighters are injured and other accidents, with the help of ordinary fire-fighting walkie-talkies and other equipment, they cannot report the internal disas...

AI Technical Summary

Problems solved by technology

At present, indoor positioning methods such as WiFi, RFID, and ultra-broadband have been proposed, but either the positioning accuracy is not high, or the cost is high, and the cost is too high. In addition, due to the sudden occurrence of firefighting and emergency rescue and disaster relief, etc., The disaster site may not have a base point in advance, and there are certain limitations to the indoor positioning method using the base point or beacons; most of the fire protection systems use inertial navigation indoor positioning technology, although it can achieve continuous real-time positioning and navigation in any environment, but only It can provide accurate position information within a certain time. As time goes by, due to drift or the existence of noise and deviation, the cumulative error will become larger and larger, and it is impossible to achieve accurate indoor positioning and navigation; it is proposed to use geomagnetism to correct inertial navigation. In the indoor positioning method, although the indoor positioning accuracy has been improved, the positioning accuracy of the geomagnetic itself is relatively not very high. In addition, due to the suddenness of emergency events such as fires, the fire department has not established the necessary geomagnetic information database in advance. For the fire protection system The applicability of the indoor positioning requirements is not enough

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