The Design And Research Of Soldier Positioning System

With the development of economics,urban architectures become more and more and roads become more and more crowded.This has brought great challenges to the fire,especially into the fire rescue.Smoke and complex structure would make rescue workers lose direction,not only unable to carry out rescue work,their own security is also threatened.Current practice is to rope in the firemen waist,due to the rope is no fire,and the length is limited.Therefore,this method is greatly limited.If we can design a device that can accurately locate firefighters,both to guide firefighters to rescue and ensure the safe evacuation of firefighters.Under this background,commissioned by the enterprise,we developed a firefighter individual positioning system.The system has the following functions: drawing timely walking path for firefighters,displaing the floor of the firefighters,displaing the posture(stand,walk,run,go up and down stairs)of firefighters,and communicating with monitoring background through wireless communication and 4G communication.According to the project requirements,this paper designs a set of solutions.The soldier positioning equipment is divided into three parts,the foot inertial navigation module,communication module and relay module.It includes two aspects: hardware circuit design and software design.In the part of hardware,the motion and posture information of the firemen were collected by using gyroscope,accelerometer and geomagnetic sensor.Three dimensional coordinates and attitude are obtained through the ARM processor LPC1768 for data processing.The information will be transmitted to the monitoring background through 433 wireless communication module and 4G network.In software part,The system use C language to read the sensor function,data processing function,wireless communication function,etc.After the test of hardware and software functions,and a lot of testing,the indicators have met the design requirements.The device has been accepted by the enterprise,and eceived praise after putting on the market.