Design Of Distributed Radar Life Detection Display And Control Software Based On Qt

Natural disasters occur frequently in China.Wenchuan earthquake in 2008,Yushu earthquake in 2010 and Ya 'an earthquake in 2013 have caused inestimable losses to China.When a disaster occurs,rescue operations must be carried out immediately to minimize the loss caused by the disaster.If we use of life detection equipment can quickly find the specific location of the trapped people and improve the rescue efficiency.The visualization of the detection result of life detection instrument is an important research topic.At present,the life detection radar used for rescue in China is very expensive,and the supporting software has many shortcomings,such as simple interface,single color and insufficient control function.In view of the above problems,this paper mainly studies the design and implementation of a distributed radar software for life detection,which can detect and track the life in the target area from multiple directions and accurately locate the target by using distributed radar.It has the characteristics of fast identification speed,high accuracy,diverse functions,convenient operation,wide use of platform and high operation efficiency.The main purpose of this paper is to achieve a life for distributed radar detection system of computer application software,real time data receiving,processing of radar echoes,rapid detection and extraction of vital signs,such as breathing and heart through the software to complete the whole process of signal processing,those trapped in the ruins of positioning.The detection results are output through the computer screen.The software can run on Windows,Linux,apple and other mainstream operating systems,considering the differences of the platform,in order to facilitate the transplant of the software,choose Qt as a development tool,Qt is a cross-platform C++ graphical user interface application development framework,can be a good implementation of cross-platform application development.In this paper,a model is established to analyze the weak movement characteristics of human respiration and heartbeat,and an appropriate digital filter is designed to suppress the clutter and extract the echo signal containing human life characteristics.According to the echo characteristic of uwb radar with step frequency,the delay of echo signal is acquired,and the ranging of human target is realized.The distributed radar life detection system USES at least three small radars one at a time to acquire multiple sets of radar echo data from different directions.Different from the traditional approximate estimation and solution of equations,the intersecting point model of three spherical spheres can be used to quickly determine the coordinates of the trapped people in any space rectangular coordinate system.Using Qt complete the software development,testing to verify the function of various modules,cascade module to carry on the overall test,will eventually software access system testing,test software of work performance,as well as the detection range and accuracy,make sure it is software function and compatibility,high stability,conducive to release after the human-computer interaction,for transplantation..