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随着微电子技术的发展,数字技术在科学研究领域得到了越来越广泛的应用。在聚变实验中,为了提高实验的精度以及对信号作适时处理,利用微型计算机对测量信号进行模-数转换和数值处理等技术也得到了很快的发展。本文介绍了八毫米微波外差时序多色仪(以下简称多色仪)的数据采集,信号处理系统及方法。将多色仪的输出信号——一串时序脉冲经波形存贮采样和数字化,然后送至微型计算机作判别与分析处理。取代了原来靠示波器照相、取值的方法。这样有效地提高了信号处理的速度及实验精度,为适时判别及诊断聚变装置中等离子体的物理行为提供了必要的信息。
With the development of microelectronic technology, digital technology has been more and more widely used in the field of scientific research. In the fusion experiment, in order to improve the accuracy of the experiment and to process the signal in time, the technique of using the microcomputer to convert the measured signal to analog-digital conversion and numerical processing has also been developed rapidly. This article introduces the data acquisition and signal processing system and method of eight millimeter microwave heterodyne timing multi-color instrument (hereinafter referred to as multi-color instrument). The multi-color instrument output signal - a series of timing pulse waveform storage sampling and digitization, and then sent to the microcomputer for discrimination and analysis. Replaced by the original oscilloscope photography, the value of the method. This effectively improves the signal processing speed and experimental accuracy, providing the necessary information for timely identification and diagnosis of the physical behavior of the plasma in the fusion device.