Design And Implementation Of Emergency Rescue Autonomous Positioning System

At present,with the widespread application of global navigation satellite systems,the field of outdoor positioning has developed rapidly.But the corresponding outdoor positioning technology cannot be applied to indoor positioning due to weak GPS(Global Positioning System)satellite signals,in the field of indoor positioning.Currently,indoor positioning is mainly performed through indoor positioning technologies such as Wi-Fi and Bluetooth.In recent years,the buildings in cities have become taller and more complex.Once a fire accident occurs,the basic equipment such as Wi-Fi and Bluetooth used for indoor positioning will be damaged to a great extent,so it is impossible to provide firefighters with accurate and reliable indoor positioning services,which brings difficulties and dangers to firefighters' rescue operations.The goal of this paper is to design and implement a set of autonomous emergency rescue positioning system to improve the safety guarantee for firefighters emergency rescue.The emergency rescue autonomous positioning system includes two parts:the system background management platform and the mobile terminal APP.The system mainly uses the mobile intelligent terminal carried by firefighters to collect the corresponding acceleration,gyroscope,geomagnetic and other sensor information in the rescue process to realize pedestrian dead reckoning to provide indoor positioning services.By constructing a firefighter's behavior pattern recognition algorithm model to identify the firefighter's behavior pattern during the rescue process,and adaptively selecting a step counting algorithm with higher accuracy based on the recognition result to apply to pedestrian track inference,thus obtaining more accurate and reliable Indoor location service.This paper analyzes and selects the technology used to implement the system,analyzes the requirements of the system and outlines the design,and finally completes the detailed design and implementation,testing and deployment of the emergency rescue autonomous positioning system.The system background management platform provides administrators with functions to manage system users,roles and related emergency rescue services.The mobile terminal APP provides firefighters with more accurate and reliable emergency rescue indoor positioning and track display functions,and also provides other basic business functions.