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Data acquisition device of nuclear magnetic resonance spectrometer

A nuclear magnetic resonance spectrometer and data acquisition technology, applied in the direction of using nuclear magnetic resonance for analysis, etc., can solve problems such as reducing experimental efficiency, achieve high spectral resolution, avoid non-repeatability, and customizable spectral resolution.

Inactive Publication Date: 2013-08-07
XIAMEN UNIV
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Problems solved by technology

The disadvantages of this method are: ①When searching for unknown spectral peaks, it is necessary to excite the sample multiple times, which reduces the experimental efficiency; ②The experimental results of multiple excitation samples introduce time differences, which brings more uncertainty

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  • Data acquisition device of nuclear magnetic resonance spectrometer
  • Data acquisition device of nuclear magnetic resonance spectrometer
  • Data acquisition device of nuclear magnetic resonance spectrometer

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Embodiment Construction

[0018] In order to make the technical means, innovative features, objectives and effects achieved by the present invention easy to understand, the following embodiments will further introduce the present invention in detail in conjunction with the accompanying drawings.

[0019] The present invention increases the spectrum subdivision technology in the field of signal processing on the basis of the existing data acquisition scheme of the NMR spectrometer, and designs a set of hardware suitable for realizing the spectrum subdivision technology according to the special requirements and characteristics of the spectrum subdivision technology The system realizes functions such as optimizing the experimental process and effectively improving the processing speed of the NMR spectrometer console.

[0020] Such as figure 1 As shown, the embodiment of the present invention is provided with nuclear magnetic control head 1, demodulator 2, filter circuit 3, programmable gain amplifier 4, a...

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Abstract

The invention discloses a data acquisition device of a nuclear magnetic resonance spectrometer, relates to a nuclear magnetic resonance spectrometer, and provides a data acquisition device of a nuclear magnetic resonance spectrometer which can avoid exciting a sample to be tested repeatedly and rapidly search an unknown peak. The data acquisition device is provided with a nuclear magnetic controlhead, a demodulator, a filter circuit, a programmable gain amplifier, an analog digital conversion (ADC) circuit and a central processing unit; an input end of the demodulator is connected with an output end of the nuclear magnetic control head; an input end of the filter circuit is connected with an intermediate frequency FID signal output end of the demodulator; an input end of the programmablegain amplifier is connected with an output end of the filter circuit; an input end of the ADC circuit is connected with an output end of the programmable gain amplifier; an input port of the central processing unit is connected with a digital intermediate frequency FID signal output end of the ADC circuit; the central processing unit is connected with a high-capacity data cache; and an output port of the central processing unit is externally connected with a computer through a computer interface.

Description

technical field [0001] The invention relates to a nuclear magnetic resonance spectrometer, in particular to a data acquisition device of the nuclear magnetic resonance spectrometer which can avoid repeated excitation of samples to be tested and quickly search for unknown spectral peaks. Background technique [0002] NMR spectrometer is a high-end large-scale scientific instrument with high technical content and a wide range of applications. At present, the mainstream products in the market are NMR spectrometers produced by companies such as Varian in the United States and Bruker in Germany. [0003] In the experimental process of NMR spectrometer, all the substances in the sample to be tested are often not known in advance. In the initial experiment, there is a process of searching for unknown peaks ([1] Xie Dilin, Chen Zhong, Shi Weiqiao, etc. NMR carbon spectrum peak retrieval system [J] Journal of Spectroscopy, 2008 (01): 128-132). Commercial spectrometers generally ado...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N24/08
Inventor 刘鸿飞陈忠孙惠军陈志伟郑振耀
Owner XIAMEN UNIV
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