Firefighter indoor positioning device and positioning method

Abstract

The invention discloses a firefighter indoor positioning device and a positioning method and belongs to the technical field of positioning devices and communication equipment. The positioning device is composed of a NB-IoT narrowband communication positioning device side, a cloud server side and a firefighting operation commanding side, the NB-IoT narrowband communication positioning device side comprises a main control module and a NB-IoT wireless communication/routing module, and the cloud server side comprises a positioning algorithm module and an indoor micro-map module. The positioning method includes that the positioning device performs micro inertial navigation positioning and uploads collected real-time indoor geomagnetic data to a cloud server; the cloud server side matches the indoor geomagnetic data with a geomagnetic signal fingerprint library, positioning is completed through an indoor geomagnetic positioning algorithm analysis module, geomagnetic signals and coordinates of a micro map are correlated to realize visual positioning; the firefighting operation commanding side realizes position monitoring and alarming of firefighters. The firefighter indoor positioning device and the positioning method are mainly used for positioning and visual commanding of the firefighters during indoor rescue without power and Internet access.

Description

technical field [0001] The present invention relates to the technical field of positioning device and communication equipment development, and more specifically, relates to a communication positioning device and a positioning method used for positioning and visual command of firefighters' indoor rescue under the condition of no electricity and no network. Background technique [0002] In the patent No. CN201110047495, the application date is 2011.02.28, and the patent name is "firefighter's on-site navigation device". The on-site navigation device for firefighters in action includes: a central control module, a three-dimensional positioning module, an external storage module, a communication module, an input and output module and several core modules of a protective shell. Through the cooperative work of these core modules, it is determined that the firefighters The three-dimensional position of the fire scene, and inform the firefighters with a clear and intuitive voice or ...

AI Technical Summary

Problems solved by technology

Its shortcoming is that the positioning effect cannot be achieved indoors by using GPS positioning technology, and the positioning accuracy is extremely poor

Its shortcoming is that it does not consider the situation that the communication base station placed in the building cannot be used due to the power outage of the fire building

Its shortcoming is that the positioning effect cannot be achieved indoors by using GPS positioning technology, and the positioning accuracy is extremely poor

Its shortcoming is that there is no indoor positioning technology for firefighters when fighting on fire, and the protection of firefighters' life safety is not comprehensive enough

The disadvantage is that the communication technology used is the same as that of the traditional walkie-talkie and the frequency band. The communication signal is easily affected by high temperature and dense smoke, resulting in unstable signal and the safety of firefighters is still not guaranteed.

Its shortcoming is that the communication technology used is the same as that used by traditional walkie-talkies and the frequency band is the same, and the communication signal is easily affected by high temperature and dense smoke, resulting in signal instability

Its shortcoming is that when GPRS cannot be used in a dense smoke environment, the WIFI module is used to transmit data back. It does not take into account the power failure of the fire scene. Once the power is off, WIFI will not be able to access the network and cannot transmit data back.

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