| 基于SOPC的核磁共振可编程脉冲源设计 |
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| 引用本文： | 张庆顺,张亚坤,王文理. 基于SOPC的核磁共振可编程脉冲源设计[J]. 核电子学与探测技术, 2012, 32(2): 218-223 |
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| 作者姓名： | 张庆顺 张亚坤 王文理 |
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| 作者单位： | 河北大学电子信息工程学院,河北保定,071002 |
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| 摘 要： | 研究了基于SOPC(可编程片上系统)技术的脉冲核磁共振(Nuclear Magnetic Resonance,以下简称NMR)设备中脉冲源的设计,充分利用了NiosⅡ软核处理器的强大处理能力以及FPGA设计的灵活性,构建了SOPC系统,阐述了系统总体设计方案,重点介绍了FPGA中可编程多脉冲产生逻辑组件的设计,给出了部分实现程序及任务逻辑仿真波形,最后在示波器上显示出清晰、稳定、质量好的多脉冲输出波形,有较高的应用价值。系统软硬件易于修改和升级,可满足不同应用场合对脉冲核磁共振中脉冲序列的各种要求。
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| 关 键 词： | SOPC(可编程片上系统) NiosⅡ 可编程多脉冲产生逻辑 脉冲序列 |
The Design of Nuclear Magnetic Resonance Programmable Pulsed Source Based SOPC |
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| ZHANG Qing-shun , ZHANG Ya-kun , WANG Wen-li. The Design of Nuclear Magnetic Resonance Programmable Pulsed Source Based SOPC[J]. Nuclear Electronics & Detection Technology, 2012, 32(2): 218-223 |
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| Authors: | ZHANG Qing-shun ZHANG Ya-kun WANG Wen-li |
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| Affiliation: | (college of Electronic and Information Engineering,Hebei University Baoding,Hebei 071002) |
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| Abstract: | The design of pulse source in the equipments of pulsed Nuclear Magnetic Resonance is studied based on SOPC.The strong processing power of NiosⅡ embedded processor and the design flexibility of FPGA are fully used.The SOPC system is built.The overall design plan for the pulse source is described.The design of programmable multi-pulse generation logic user-defined components in the FPGA is introduced mainly.Part of the implementation program and the task logic simulation waveforms are presented.The pulse source has better application value because a clear,stable and good quality multi-pulse output waveform can be shown on the oscilloscope finally.The system software and hardware are easy to be modified and upgraded,meeting different application of pulsed NMR pulse sequence in variety of requirements. |
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| Keywords: | SOPC(System On Programmable Chip) NiosⅡ programmable multi-pulse generation logic pulse sequence |
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