基于功率谱估计的流量测量实验教学  

Experimental Teaching Research of Doppler Flow Measurement Based on Classical Power Spectrum Estimation

作　　者：李利品[1] 陈欢 党瑞荣[1] 黄燕群 任志平[1] 刘科满 LI Lipin;CHEN Huan;DANG Ruirong;HUANG Yanqun;REN Zhiping;LIU Keman(School of Electronic Engineering,Xi’an Shiyou University,Xi’an 710065,China;Xi’an Modern Control Technology Research Institute,Xi’an 710065,China)

机构地区：[1]西安石油大学电子工程学院,西安710065 [2]西安现代控制技术研究所,西安710065

出　　处：《实验室研究与探索》2021年第5期107-111,共5页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(41774081);陕西省工业攻关项目(2020GY-169);陕西省教育厅重点实验室项目(20JS124);西安石油大学电子工程学院一流课程建设项目(DG20200101)。

摘　　要：为实现信号处理理论知识与应用系统的紧密有效融合,设计了基于"数字信号处理""DSP原理及应用"课程的综合性实践项目——基于功率谱估计的多普勒流量测量实验。实验以多相流体为研究对象,根据超声多普勒原理,采用"数字信号处理"课程中的经典功率谱法对多普勒回波信号进行频移检测及算法仿真,最终在DSP为控制核心的硬件系统中实现算法设计、程序加载、系统调试、流量测量等。以该项目为实验平台,形成了理论与实际应用的结合、算法与硬件系统的结合,教研相长,培养学生从理论到应用的思维方法以及解决复杂工程问题的能力。A comprehensive practical project of Doppler flow measurement experiment based on classical power spectrum estimation is designed,it realizes the effective integration between theoretical knowledge of signal processing and application system for the two courses of"Digital Signal Processing"and"DSP Principle and Application".During the experiment,according to the principle of ultrasonic Doppler,the Doppler frequency shift detection and algorithm simulation are carried out by the classical power spectrum method in the course of"Digital Signal Processing".Finally,the algorithm design,program loading,system debugging and flow measurement are realized in the hardware system with DSP as the control core.Taking the project as the experimental platform,it forms the organic combination of theory and practical application,the combination of algorithm and hardware system,the combination of teaching and research,which trains the thinking method from theory to application and ability to solve complex engineering problems for students.

关 键 词：功率谱 流量测量 数字信号处理 

分 类 号：TH814.92[机械工程—仪器科学与技术]