脉冲核磁共振硬脉冲序列发生器的设计  

Design of a Pulse Sequence Generator in P-NMR Based on DDS and CPLD

作　　者：王文理[1] 梁春峰[1] 李小亭[1] 刘志强[2] 孙伟[3] 

机构地区：[1]河北大学电子信息工程学院,河北保定071002 [2]河北大学静电技术研究所,河北保定071002 [3]河北软件职业技术学院,河北保定071002

出　　处：《核电子学与探测技术》2009年第5期1175-1178,共4页Nuclear Electronics & Detection Technology

基　　金：河北省科技攻关计划资助项目数字化标准磁场测量仪研制与开发项目(07213513D)

摘　　要：以C8051F020单片机为核心控制单元,控制DDS芯片AD9850和CPLD芯片EPM7512AETC144-10,设计了应用于脉冲核磁共振装置中的硬脉冲序列生成器,能产生IR和CPMG等硬脉冲序列,适用于0.6T及以下的主场装置。实验表明,该设计具有稳定性好、自动化程度优良和性价比良好的特点,具有很高的实用价值。An C8051F020 single chip computer is applied as a control unit and a Pulse Sequence Generator in P-NMR has been designed by using DDS chip, AD9850 and CPLD chip, EPM7512AETC144-10, this system can generate the sequence such as IR and CPMG. The system is suitable for a magnetic field no more than 0. 6T. Experimental proof of the system＇s a good stability, eximious degree of automation, high cost performance and have high practical value.

关 键 词：脉冲核磁共振 C8051F020 AD9850 CPLD 

分 类 号：TL823[核科学技术—核技术及应用]