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Real time correlation filter for optical particle counter

机译:光学粒子计数器的实时相关滤波器

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摘要

Particle signals are detected by two parallel measuring chains which consist of a detector and analog to digital converter. We have used OPT101 as photodiode and ADS7870 for A/D converter and the output signal from two parallel measuring chains is processed by on line correlation filter. This filter works as real time systems. A correlation algorithm has been applied for this work. The signal to noise ratio has been increased by applying correlation filter. The gain of the filter has been improved by introducing digital signal processing.
机译:粒子信号由两个平行的测量链检测,这两个链由一个检测器和一个模数转换器组成。我们将OPT101用作光电二极管,将ADS7870用作A / D转换器,并通过在线相关滤波器处理两个并行测量链的输出信号。该过滤器用作实时系统。相关算法已应用于这项工作。通过应用相关滤波器可以提高信噪比。滤波器的增益已经通过引入数字信号处理得到了改善。

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