| In recent years,the demand for uranium mines has been increasing dramatically with the development of China's nuclear power industry and the exploration of uranium mines underground deeply is very necessary.The radon is an important indicator for prospecting the ore.The thesis analyzes the different methods of uranium exploration by measuring the level of the radon and points out the shortcomings of existing instruments in the field of uranium exploration.It proposed a real-time accumulation of multiparameter measuring system of arrays online about soil radon.The mechanism of hardware and the design thinking of software are introduced.It also analyses the elements which effect the performance of instrument and gets lots of data from doing experiments.A high-sensitivity gold-silicon surface barrier detector was selected as the main detection with the core technology of the real-time accumulation about soil radon and it develops an instrument that experimental data and environmental parameters of the corresponding parameters of soil radon were obtained by establishing the experimental system of real-time accumulation of multiparameter measuring system of arrays about soil radon in large tracts of land.It can reduce the influence of the thorium and avoid non-uniform distribution of radon in the air.The way will raise the number of the radon falling on the surface of the gold-silicon detector after a period of electrostatic accumulation to improve the equipment's sensitivity.Dozens of equipment measuring radon at the same time could get lots of data,small statistical errors,many better data to compare and highly work efficiency.It is also smaller than others to carry.The factor of temperature and humidity was modified to reduce the effect on the performance of the instrument.Accurate measurement is achieved by calibrating with the standard instrument.According to the National Metrological Verification Regulations of the People's Republic of China(JJG 825-2013),it was tested the repeatability,instrument response and relative inherent error and the experimental data met the requirements of the regulations.The designed system can exchange and store data through Bluetooth and RS-485 bus in this thesis,and the data can be show on the computer through RS-485 bus inthe same time period so that researcher could find the abnormal changes in time.It use to detect the soil radon and air radon with high sensitivity,simple structure,low power consumption,small size,light weight,convenient use,large amount of information,small statistical error,reduced turbulence of thorium and better contrast data. |
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