| 基于USB总线的一体化核磁共振谱仪控制台 |
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| 引用本文： | 刘颖,沈杰,李鲠颖.基于USB总线的一体化核磁共振谱仪控制台[J].波谱学杂志,2007,24(1):35-41. |
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| 作者姓名： | 刘颖 沈杰 李鲠颖 |
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| 作者单位： | (上海市功能磁共振成像重点实验室(华东师范大学)，华东师范大学 物理系, 上海 200062) |
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| 摘 要： | 针对台式核磁共振谱仪便携化、小型化的发展趋势，开发了一套基于USB总线的一体化核磁共振谱仪控制台，将控制/通讯部分、脉冲序列控制部分、射频发射部分与信号接收部分集成于一卡，并可实现两种工作模式. 工作模式1：系统基于USB与一台个人计算机通讯，由计算机控制来完成从对谱仪的实时控制到数据处理及显示的所有任务；工作模式2：系统由集成的微处理器控制，不需要计算机的参与，独立完成整个工作进程. 本文详细介绍了该谱仪控制台的设计思路和硬件结构，给出了常规NMR序列的实验结果.
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| 关 键 词： | 核磁共振 一体化 USB 微处理器 |
| 文章编号： | 1000-4556（2007）01-0035-07 |
| 收稿时间： | 2006-4-25 |
| 修稿时间： | 2006-04-25 |
Integrated Nuclear Magnetic Resonance Spectrometer Based on USB Connection |
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| LIU Ying,SHEN Jie,LI Geng-ying.Integrated Nuclear Magnetic Resonance Spectrometer Based on USB Connection[J].Chinese Journal of Magnetic Resonance,2007,24(1):35-41. |
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| Authors: | LIU Ying SHEN Jie LI Geng-ying |
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| Institution: | (Shanghai Key Laboratory of Functional Magnetic Resonance Imaging (East China Normal University), Department of Physics, East China Normal University, Shanghai 200062, China) |
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| Abstract: | The design of an integrated NMR spectrometer based on USB is introduced. The spectrometer, in which the control/communication unit, pulse generator, RF waveform transmitter and digital receiver are integrated onto one card, can works in two modes. In Mode I, the spectrometer communicates with a PC through USB connection, and is controlled by PC to complete all tasks including real time control of the spectrometer and data display/processing. In Mode II, the spectrometer is controlled by an integrated microprocessor and can complete all tasks without the participation of the PC. The performance of the proposed system was tested in three experiments using single-pulse, spin-echo and CPMG pulse sequences, respectively. |
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| Keywords: | nuclear magnetic resonance integration USB microprocessor unit |
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