The Bottom Line Of Low Radioactive Material Detection System

With the development of social economy and the improvement of people’s livingstandard, environmental problems are becoming more and more attention,especially inthe areas of raw material for the synthesis of radioactive materials, which hasattracted great attention.Therefore, the material radioactive concentrationdefinition isvery necessary, in recent years, a lot oflaboratory detection of radioactive material. Astheconcentration of radioactive level of many materials are lower than the naturalradiation, such as ore and naturalbuilding materials, radiation levels outside oftenflooded the concentration of analyte material, the measurement results are often largeerror, in order to get radiationconcentration precise, accurate separation ofradiationvalue does not meet the material, and timely treatment onit, it is necessary tostudy a low background onlinematerial detection system, this instrument can innatural radiation is present in high concentrations, accurate detection of lowbackground radiation concentration of material value, so according to set safety valueseparatingradioactive substandard materials.This paper mainly is the study of the multi channel lowbackground radiationdetection system, the system can detect the intensity of radioactivity material precisevalue,once the material radiation values exceed the standard,automatic alarm system.Radiation head is the key part of this system, This system is a low backgroundradiation measuring instrument, called the bottom of the signal input of testedmaterialenvironment. Therefore, in the measurement ofmaterial samples to count, to subtractthe backgroundcount, can get the true count material sample, systembackground islow, the measuring sensitivity is high, the accuracy is higher and higher. Thisdetection system uses the lead chamber thickness of20cm of the isolation process,shielded room can be fixed, but also can be made into activity, according to their needto select thesettings so that you can reduce the maximum extent of the naturalbackground of measurement results, and not to be tested material ray were quarantined in the chamber, the structure of such a design can affect the shielding ofnatural background radiation, and the radiation intensitydetector can accurately readthe material, influence and make it not shielded chamber.In addition, the system has friendly human-computer interaction model, softwareis designed with Windows CE5software development system, and realizes theapplication of Visual Studio2005as the development environment to complete thefunction of the. WINCE support for the mouse, keyboard and other peripheralhardware equipment and network system, can functionalmost identical to otherWindows system is implemented with PC, and support the graphical display function.VisualStudio created by MFC CDC2005development platformsuch as graphics anduse, drawing and using CPen,CBrush and other graphics; to reduce the screen flickerin the rendering process, use double buffer drawing mode.Embedded system softwaredevelopment requires a set ofalready by cutting but operating system characteristicsofcomplete and convenient integrated development tools,Windows CE5.0containsyou need to develop the full set of functions, debug and deploy custom. Thedevelopment platform of Windows CE5Microsoft has a fully integrated developmentenvironment, the embedded system components can build custom, so that theoperating system has better scalability and customization, WINCEoperating systemcan be logically divided into hardware layer, OEM layer, operating system layer,application layerbased on the embedded wince. The development platform ofcustomization is to customize the operating systemlayer and the OEM layer. Thesystem adopts embeddeddatabase, get rid of the dependence on the PCdatabase,embedded database provided by the module form to users, users only inaccordance with the function call tocall the function create table, add remove databaseoperation data and other commonly used this database can be developed.