基于MIE散射理论的粒度分布测量系统研究

Research on Particle Size Distribution Measurement System  Based on MIE Scattering Theory

摘要:

为了提高测量精度和稳定性,降低测量成本,在深入研究MIE散射理论的基础上,提出一种基于改进反演算法的粒度测量系统设计方案;反演算法的改进正则算子K可以降低光能残差、增加平滑程度,增加的预处理可以准确地实现多峰反演;系统利用激光器、傅里叶透镜、光电传感器采集含有待测微粒信息的电信号,通过调理电路进行处理,应用改进反演算法分析得出粒度值及分布;通过实验分析,基于改进反演算法的粒度测量系统可以实现粒度颗粒准确测量,系统性能稳定可靠。

Abstract:

In order to improve measurement accuracy and stability, reduce the cost of measurement, this paper in-depth study of MIE scattering theory, puts forward a design of particle size measurement system based on improved inversion algorithm. Improved regularization operator K of inversion algorithm can reduce the energy residual, increase smoothness; added preprocessing algorithm can realize multimodal inversion accurately. By use of laser, Fourier lens, photoelectric sensor to collect electrical signals containing particles information, and through conditioning circuit for signals processing, using improved inversion algorithm analyze and calculate the value of particle size distribution. Through experimental analysis, particle size measurement system based on improved inversion algorithm can achieve particle size measurement accurately, with stable and reliable system performance.