| 基于DSP＋FPGA的核磁共振数据采集系统的设计 |
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| 引用本文： | 赖晓珍,冯适,龚曦.基于DSP＋FPGA的核磁共振数据采集系统的设计[J].可编程控制器与工厂自动化(PLC FA),2008(3):97-99. |
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| 作者姓名： | 赖晓珍 冯适 龚曦 |
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| 作者单位： | 武汉理工大学自动化学院 |
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| 摘 要： | 本文描述了一个以数字信号处理器系统为核心,以高速A/D转换器、（DDS）直接数字频率合成器、可编程逻辑门阵列FPGA、内含数控振荡器（NCO）的数字接收器为主体的核磁共振数据采集系统。根据自由感应回波信号低信噪比的特点,重点设计了差分输入的数据采集电路。
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| 关 键 词： | 核磁共振 直接数字频率合成 数字信号处理 |
Design of Data Acquisition System for Nuclear Magnetic Resonance Based on DSP and FPGA |
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| Lai Xiaozhen Feng Shi Gong Xi.Design of Data Acquisition System for Nuclear Magnetic Resonance Based on DSP and FPGA[J].Programmable controller & Factory Automation(PLC & FA),2008(3):97-99. |
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| Authors: | Lai Xiaozhen Feng Shi Gong Xi |
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| Affiliation: | Lai Xiaozhen Feng Shi Gong Xi |
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| Abstract: | A data acquisition system with a DSP core and a circuit composed by highspeed A/D converter,FPGA and DSRP carry a built_in numerical controlled oscillator（NCO） is made for nuclear magnetic resonance（NMR） .According to low signal to noise ratio of free induction decay（FID） signal,the circuit of data acquisition is particular designed. Experimental results indicated that the system meets the requirements of nuclear magnetic resonance for oil analyzer. |
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| Keywords: | Nuclear magnetic resonance Direct digital frequency synthesis DSP |
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