Design Of Fire Rescue Positioning System Based On Inertial Navigation Technology

In recent years,with the rapid development of the economy in our country,the size of the city is expanding,the number of high-rise buildings is increasing,and the structure of urban architecture is increasingly complex.These have brought great challenges to the firefighters' reconnaissance,search and rescue and firefighting work.According to the fire scene information sent by firefighters in real time,the fire rescue command departments need to make corresponding decisions,so as to reduce casualties and property losses.Therefore,it is of great significance to further study the indoor fire rescue positioning system.In this paper,based on the deep research on the existing fire rescue positioning system,and combined with the current actual situation in our country,a fire rescue positioning system using inertial navigation technology is designed.It is mainly to achieve accurate positioning of firefighters in the fire complex environment.Inertial navigation technology is a kind of which doesn't depend on external reference,and completely independent positioning method,which has strong autonomy and realtime.The fire rescue positioning system designed in this paper is divided into three parts,namely,single person positioning device,handheld mobile device and rear command center.The single person positioning device mainly realizes the functions of data acquisition,data processing and data communication.Among them,the high integration MPU6050 sensor chip is used as the main chip to realize the data acquisition function by the data acquisition module.The STM32 microcontroller with ARM Cortex-M3 as the core is used to implement the data processing function by the data processing module.Low-power CC2541 Bluetooth chip is used to achieve data communications by the data communication module.For the handheld mobile device and the rear command center,the software is mainly developed.It realizes the data communication between the fire scene and the command center of the fire truck.It also shows the firefighter's walking track in the command center.In this paper,the entire fire rescue positioning system is designed and built.The design and debugging of the main modules of the system have been completed.The feasibility of the design scheme is verified.The experimental results show that the system basically meets the design requirements.And its positioning accuracy is high and its stability is good.It can effectively realize the indoor location of firefighters.It also provides reference information for the fire control center to formulate the rescue strategies.