Design And Implement Of Portable Radiation With Low Noise And Low Power Consumption

With the demand for energy is growing, development of nuclear energy may provide the demand for energy, but there is a growing concern for the survival of the environment, making the living environment for monitoring radioactive contamination of nuclear radiation protection became very important.α、β、γ radiation dose values is an important factor in the assessment of radioactive contamination of the environment, monitoring of these radioactive radiation dose values to assess the situation to achieve environmental radioactive contamination monitoring principle is relatively easy, but the current radiation monitor many units use mainly depends imports, domestic product volume is too large, are not universal and other shortcomings restrict the competitiveness of domestic products.In this paper, by analyzing the current situation and development trend of domestic and related products for the domestic presence of a radiation monitor smaller scale, are not universal and other shortcomings, according to advanced nuclear radiation detection technology supervisor. Overall, the radiation monitor has a small size, light weight, low power consumption, can be configured in many different probe design practical advantages measurement system, making the system design of small volume, low-noise, can be configured with different semiconductor probe meets the needs of different probe.In this paper, radiation monitor system by the detector, preamplifier, sallen-key filter shaping circuit, linear amplifier, voltage comparator circuit, the central control unit and power supply modules. No. The instrument uses two batteries, boosting by boost circuit, power supply to meet the central control unit and its peripheral circuits, etc., using a multiple voltage circuit design high voltage circuit module, making high voltage circuit eliminates the traditional high-voltage circuit transformer unit, thus ensuring the whole power supply module, small size, low power consumption, to ensure continuous operation of the entire system at least 15H, and can store 3000 sets of data, set the dose rate alarm threshold, the system failure alarm, battery voltage alarm function, full consideration of the instrument details designed to ensure that the instrument has good usability and reliability.