| With the global nuclear power development in the second coming of the peak,Nuclear fuel resources is particularly important and will be the same with the oil resources in the world against the backdrop of the energy crisis. It wil be a new focus for countries in the world to explore nuclear fuel resources and make the strategic reserve. The enormous global demand for nuclear fuel to uranium exploration and mining will pose a serious challenge in the coming decades. So,γ-ray spectrometry methods in uranium exploration and development of mineral resources will play an irreplaceable role.γ-ray spectrometry is an important nuclear geophysical methods to solve earth science, environmental science and other related issues. According to the measuredγ-ray spectroscopy, the total ofγ-irradiation, as well as uranium, thorium, potassium and other elements as well as other relevant lithology information will be available, based on these information, we can not only carry out uranium exploration, but also can be applied to geological mapping, oil and gas exploration and looking for such as metals and non-metallic mineral. In addition,γ-ray spectrometry and monitoring radioactive pollution also play an important role to serve in the same building materials and environmental radiation monitoring.However,γ-ray spectrometry method must be provided byγ-ray spectrometry equipment based on scientific data. Spectrometer for field measurements in the field and the practical requirements, combined with the spectrometer on the current market research, based on micro-electronic technology in the development is proposed in this paperγ-ray spectrometer integration of low-power design, the NaI (Tl) probe integrated with the host console for the integration, so as to meet the measuring instrument at the scene of nuclear small size, light weight, low power, high performance, analysis of the characteristics of speed requirements.γ-ray spectrometry based on the principle of the C8051F120 to resource-rich single-chip microprocessor as the NaI (Tl) detector (Ф75mm * 75mm) andγ-ray spectrometry analysis of multi-channel system and on-site GPS positioning system hand-held one design, combined with intelligent power management system designed to achieve low-power equipment in the completion of the laser under the (uranium), thorium and potassium content analysis and activity analysis, and analysis ofγradiation dose rate.After a one-year design and development work, the main results achieved in this article as follows:1. In the structure design, high-sensitivityФ75×75mm NaI (Tl) crystal, at the same time with multi-channel analysis system and the integration of GPS system design.2. In the system, the completion of the traditional analysis ofγ-ray spectrometry at the same time, the GPS technology as a form of optional features integrated into the system for measuring points on the positioning requirements of the scene.3. In the system power consumption, using low-power power supply design program, so that whole power consumption <400mW (controllable standby power consumption is about 100mW).4. Apparatus using USB interface to facilitate computer database linked to the background so that the secondary data analysis. use the latest OLED display technology to provide a more user-friendly man-machine interface.5. In technical indicators, the energy resolution is better than 12% (Cs-137 source), 256 full-spectrum display, GPS positioning accuracy of the level of error <3 m, machine weight <3kg.
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