基于ARM核的核地球物理数据采集卡的设计

The Introduction of Nuclear Geophysics Acquisition System About Hardware and Software Based on ARM

针对目前核地球物理数据测量仪中功耗大,体积大,处理数据慢,不适于野外便携式操作的情况,设计了一种以ARM7微处理器核为数据平台,采用嵌入式处理器LPC2148作为数据处理核心,系统电路采用LTC1605进行模数转换,采用硬件电路扣除死时间的核地球物理数据采集卡。该数据采集卡具有可靠性好、功耗低、集成程度高、分析精度和现场数据处理能力强等特点,可适配α、β、γ、X等探测器,组成多用途、便携式能谱测量仪器。

The current nuclear data in the measing instrument,such as high power consumption , size, not suitable for portable field. The card takes the embedded processor LPC2148 as the core of data processing. The system takes LTC1605 to carry on the A/D conversion. The hardware electric - circuit deducts the dead - time. The data acquisition card has the advantages of high degree of integration, analysis and field data processing capability and eharacteristicsw while the electronics unit is reliable and high-intergrated. It accords with α、β、γ and X detector, etc,so as to build a portable versatile equipment for radiation and element analyzing.