大学化学 >> 2025, Vol. 40 >> Issue (2): 59-66.doi: 10.12461/PKU.DXHX202408127

所属专题： 教学型仪器的研制&改进与实验教学

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旧谱新声(生)——基于旧仪器改造的创新实验教学

吴晶1, 王威1, 兰景凤2, 俞娥2, 蒲巧生1   

  1. 1 兰州大学化学化工学院, 兰州 730000;
    2 化学国家级实验教学示范中心(兰州大学), 兰州 730000
  • 收稿日期:2024-08-30 录用日期:2024-09-20 发布日期:2025-02-22
  • 通讯作者: 蒲巧生 E-mail:puqs@lzu.edu.cn
  • 基金资助:
    甘肃省教育厅2023年高等教育教学成果培育项目(PX-48232713)；兰州大学教育教学改革研究项目(202212)；教育部化学“101计划”——化学测量学实验课程建设项目；教育部第三批虚拟教研室建设试点——“101计划”化学测量学实验课程虚拟教研室

New Life of an Old Spectrometer: An Innovative Experiment Based on the Digitization of an Obsolete Instrument

Jing Wu1, Wei Wang1, Jingfeng Lan2, E Yu2, Qiaosheng Pu1   

  1. 1 College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China;
    2 National Demonstration Center for Experimental Chemistry Education (Lanzhou University), Lanzhou 730000, China
  • Received:2024-08-30 Accepted:2024-09-20 Published:2025-02-22
  • Contact: Qiaosheng Pu E-mail:puqs@lzu.edu.cn

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摘要： 当前仪器分析实验中所使用的商品化设备结构较封闭、自动化程度高，使用方便但不利于教学过程中功能单元和运行过程的展示，针对该问题我们对一台旧的核磁共振波谱仪进行了数字化改造。利用数据采集卡代替其原装的笔式信号记录仪及示波器，并编写专用程序，实现了对仪器模拟信号的数字化处理及计算机上谱图的显示、处理和存储。经改造，仪器功能更贴合教学需求，多维度地提升了仪器分析实验的教学效果，不仅有助于深化学生对理论的理解，还可激发学生的创新意识。

关键词: 核磁共振波谱仪, A/D转换, 数据采集, 虚拟仪器

Abstract: Today, commercial analytical instruments used in teaching are often enclosed and highly automated, which, while convenient for routine analysis, can hinder the demonstration of instrument components and operations during the teaching process. To address this issue, we modified an old nuclear magnetic resonance (NMR) spectrometer to enable digital signal output. By replacing its mechanical recorder and cathode-ray tube oscilloscope with a data acquisition card and custom software, we successfully facilitated the display, manipulation, and storage of spectra on a computer. This modification enhances the instrument’s suitability for teaching, allowing for more direct observation and hands-on operation, thereby improving students’ understanding and stimulating their innovative thinking. It significantly enhances the educational outcomes of instrumental analysis experiments.

Key words: Nuclear magnetic resonance (NMR) spectrometer, A/D conversion, Data acquisition, Virtual instruments