| With the global nuclear power development, the arrival of the second peak,the construction of nuclear power projects. People increasingly concerned about radiation environment.Provinces have set up relevant departments of environmental radiation monitoring.In many areas requirements to measure the radiation intensity.such as: in medicine, industry, inventory of nuclear weapons, nuclear testing and other areas.And requested protective places in the necessary.Because ionizing radiation induce changes chemical balance in the cell , certain changes may cause cancer.Ionizing radiation damage genetic material DNA in the cell.This effect may even spread to the next generation.Under the strong radiation exposure,hours or days can cause disease or death.Develop an effective method of radiation protection,to ensure that workers who received doses within the safe range,is the radiation protection The main work contents.Radiation protection is integrated interdisciplinary the study of protection of mankind from radiation hazards or less.Radiation protection methods must be based on scientific data of dose measuring instruments.In order to obtain more accurate dose measurement and analysis of results and can be applied to field measurements.Research can easily measure the dose meter and data processing is always a very important task.Most of China's environmental protection departments of nuclear radiation monitoring equipment imported from abroad. Domestic production of nuclear radiation monitoring products are mainly two.One is the environmental level meter,the range is generally 0.01μSv ~ 100μSv.The other is the protection level meter,the range is generally more than 100μSv.Few range from environment to protection level.The most restricted type of photon,not be able to simultaneously measure multiple radiation dose rate meter.Based on the current problems of dose rate meter and field measurement of the actual requirements.Combined with the dose rate on the current market research instrument.Relying on the development of miniaturization of electronic technology.In this paper, wide-range dose of multi-parameter instrument research.The design for the lithium glass, plastic scintillator and Geiger tube, connected to the composition as a whole host console.So as to meet the on-site measurements in addition to nuclear energy photon dose measurements can measure other particles outside,such as neutron and other.Meanwhile, in order to make devices small size, light weight, low power, high performance, rapid analysis and other requirements. Principles of radiation dose on the basis of measurement,resource-rich as the microprocessor for AT89S52.On the triple detector and dose rate measurement and analysis system for integrated design. Geiger tube in which the internal built-in console.The other two detectors connected through the interface and console.Achieve multi-parameter measure- ment of high sensitivity and wide range.This paper's main results:1.In structural design,simultaneously by three detectors and dose measurement and analysis system linked to the integration of design. Solve the on-site measurements can be fast and efficient multi-ray dose at the same time2.The system power, low-power supply design, to power<550mW;3.In the human design,instrument using LCD display technology,provide a more personalized interactive interface, easily connect to the database and computer for serial,in order to secondary analysis.4. Instrument technology indicators, Range: 10nSv~100μSv and 100μSv~10Sv, Energy response: 40keV~3MeV(photon)0.2~ 5MeV(neutron), Weight <2kg/This study is of practical value.For the commercialization of such devices made and create better conditions.
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