激光多普勒测速实验虚拟仿真及硬件改进

针对传统激光多普勒测速实验系统中硬件采样率有限及多普勒信号自动化处理性能较弱的问题,本文开展了实验系统虚拟仿真及硬件改进.利用Unity 3D和Matlab Apps对实验内容及其信号处理方法进行了建模,通过虚拟仿真的开发,学生可更深入地了解实验系统的细节;采用LabVIEW编程和数字示波器组建了便捷的自动化高速数据采...

Virtual simulation and hardware improvements of the laser Doppler velocimetry experiment

Due to the limited sampling rate of hardware and the weak auto-processing performance in the traditional laser Doppler velocimetry experimental system,virtual simulation and hardware improvements of the system are carried out in this work.To develop the virtual simulation,Unity 3D and Matlab Apps are employed to model the experimental principles and the related signal processing methods.In this way,students could gain a deeper understanding of the experimental system.Meanwhile,for hardware improvements,a convenient high-speed data acquisition system is constructed by using LabVIEW programming and digital oscilloscope.And then the sampling rate of the existing hardware is increased from 50 MSa/s to 2 GSa/s.In the parts of software system,various digital processing modules,such as digital filtering and automatic measurement,are realized to highly improve the performance of the current experimental system.This work provides a reference for the teaching content and system design of laser Doppler velocimetry.