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阐述了利用穿越介质后的激光信号的随机波动来测量颗粒尺寸和浓度的原理和方 法，并在实验室条件下对标准颗粒进行了验证，实验结果表明，该方法在低颗粒浓度和较高浓 度时都能得到好的测量结果，建立在该原理上的测量仪器结构简单、对环境要求低、无需特殊 的保护措施，这些特点为工业生产中的在线监测提供了一种有效的方法。
The principle and method of measuring particle size and concentration by random fluctuation of the laser signal after passing through the medium are described. The standard particles are verified under laboratory conditions. The experimental results show that the method is effective in low particle concentration and high concentration Good measurement results can be obtained. The measuring instruments built on the principle are simple in structure, low in environmental requirements and require no special protection measures, and these characteristics provide an effective method for on-line monitoring in industrial production.