Radioactive Aerosol Size Distribution Measurement Software Research

Radionuclides present in the atmosphere constitutes the main source of humanand other organisms in vitro irradiation dose, but also through the respiratory tract,digestive tract and even skin into the body organs, resulting in internal radiationdose. Solid-state general deposition of radionuclides in the air the solid or liquidparticles suspended in the air, or a solid radioactive material itself is some of thesuspended particles. These radioactive aerosols into the respiratory tract, in additionto a small part of exhaled, deposited in the respiratory section of the aerosol particlesper unit area of the respiratory tree deposition chance to decide in the particle sizedistribution of aerosols through the process of diffusion, impact and subsidence.The measurement of radioactive aerosol size distribution has a very importantpractical significance, the paper first introduces the principle of drying nets spreadsprinkle group and the aerosol size distribution equation, and focuses on the solutionof the equation, that is, the Twomey and EM calculation. The paper also brieflydescribes the various techniques used in software design, such as visualizationtechnology, programming techniques. With Qt and Qt to do a special introduction,including the important signals and slots mechanism. The purpose of softwareengineering in a given cost and time to develop modifiability, maintainability, andcan reuse, portability, and understandability of the software to meet user needs, so inorder to achieve their goals, we have to do a simple needs analysis, such as theoperating environment requirements, functional requirements, interfacerequirements. This paper focuses on radioactive aerosol size distribution of theconcrete realization of the calculation software. Distributed computing softwaresystem for the study of radioactive aerosol particle size, attached to the entiremeasurement system, the integration calculation of the measured data, and presentedin graphical form, to provide an intuitive feel for the experimenter.The software provides users with data acquisition and calculation, commandtransmission, graphical display, the algorithm inspection. Radioactive particles from the next bit machine measuring devices, the proliferation of group detection systembased on the screen, the calculation of the measurement data to derive a sizedistribution of an important work. This system the amount of data is not particularlylarge, so the existing computer has to meet the speed requirements, the calculationaccuracy is determined by the calculation method and the measurement dataaccuracy, and need to be improved on the basis of continuous measurementexperiment. The accuracy depends on the span of the calculation of particle diameter,In this article we take the0-1000nm range of the particles is calculated, thecalculated particle size span we take10nm, this choice can basically meet therequirements of finesse, but still need.0-100nm range, do optimization,improvement in the follow-up.