Development Of Dual-mode Wide-range Gamma Radiation Wireless Monitoring System

As global energy and environmental issues become increasingly prominent,and the development and use of nuclear energy is gradually expanding,then the radiation problems brought about by the use of nuclear energy is something we must face.To this end,many countries have successively established a nationwide continuous monitoring system for nuclear facility environmental radiation,and my country also has corresponding environmental protection departments and units.At present,the measuring range of detectors used in continuous monitoring systems for environmental radiation dose at home and abroad is relatively narrow,which makes it difficult to meet the requirements of normal operation of nuclear facilities and accident monitoring.In view of the insufficient range of current nuclear radiation monitoring instruments and the needs of on-site measurement,combined with the investigation of nuclear radiation monitoring instruments in domestic and foreign markets,and based on the development of microelectronic technology,this paper has designed a wide-range wireless system suitable for nuclear facility environments A regional radiation monitoring system for networking communications.The regional radiation monitoring system is composed of three parts:environmental parameter monitoring terminal,networking communication facilities and regional radiation monitoring service station.The environmental parameter monitoring terminal includes an environmental radiation dose monitoring terminal,a hydrogen concentration monitoring terminal,an ozone concentration monitoring terminal,etc.,wherein the environmental radiation dose monitoring terminal uses a Na I?Tl?scintillator coupled with a fast photomultiplier tube with strong radiation resistance as the front end For the detector,the rear stage adopts the measurement method of voltage pulse screening measurement and cumulative current measurement.The pulse count measurement is used for environmental radiation dose monitoring,and the cumulative current measurement is used for high dose monitoring,so it can be within 8 ranges.Obtain higher-precision dose measurement results,and equipped with wireless communication module,with network communication function.The system adopts Wi Fi wireless network communication method,and realizes network communication with large coverage area through power cats,repeaters and other network facilities.The system adopts industrial control computer as the regional service station and is equipped with special radiation monitoring software to realize real-time radiation monitoring.The actual test results show that the wide-range radiation dose monitoring system can achieve monitoring within the radiation dose rate range 8 ranges,and has the function of acousto-optic alarm,which can be applied to the external dose monitoring of the irradiation well in the ⁶⁰Co irradiation plant,etc.Application occasions.