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QYJ—1型取样积分器是一种可以将湮没在噪声中的重复性信号波形或重复脉冲大小提取出来的仪器。它有两个工作模式,即“扫描”和“定点”,前者用于恢复波形,后者用于脉中测量。取样积分器利用很窄的并与信号同步的取样脉冲,对湮没在噪声中的输入信号进行取样。再利用噪声与信号的非相关性,通过RC积分电路对取出的样品进行同步积累,来达到抑制噪声以提取信号的目的。本文讨论QYJ—1型取样积分器的基本原理、电路设计、参数选择、误差分析和一些实验结果。 QYJ—1型取样积分器不仅适用于科学研究而且也适用于高等院校教学实验。
QYJ-1 Sampling integrator is a kind of instrument that can annihilate the repetitive signal waveform or repetitive pulse size in noise. It has two modes of operation, “scan” and “fixed point”, the former is used to restore the waveform, the latter for pulse measurement. The sampling integrator samples the input signal annihilated in the noise using a very narrow sampling pulse synchronized with the signal. Reuse of noise and signal non-correlation, through the RC integration of the sample taken out of the synchronous accumulation, to achieve the purpose of suppressing noise to extract the signal. This article discusses the QYJ-1 sampling integrator basic principles, circuit design, parameter selection, error analysis and some experimental results. QYJ-1 sampling integrator is not only suitable for scientific research but also for teaching experiments in colleges and universities.