基于FPGA的固体测速系统的设计与应用

针对目前工业生产过程中的固体流速测量问题，提出了一种基于 FPGA的固体流速测量系统。该系统以相关测速算法为理论基础，通过发射载波信号到测试管道，并采集管道内两个不同位置的流速信号，对这两路信号进互相关运算，寻找峰值点，从而间接求得固体流速。该系统包括一套基于 FPGA的硬件系统和一套基于 C++的上位机软件系统。经过测试验证，本系统实现了固体流速的精确测量，性能稳定，达到了设计目标要求。

Design and Appl ication of Solid Velocity Measurement System Based on FPGA

Aiming at the problem of the solid velocity measurement in industrial production process,a new method of measuring system based on FPGA is proposed in the paper.The system takes the related speed algorithm as the theory,it transmits the carrier signal to the test pipeline,and collects the velocity signals of two different locations in the pipeline.The system carries out the cross-correlation opera-tion to the two signals,and then finds the peak.The solid velocity is obtained indirectly in this way.The system includes the hardware system based on FPGA and the software system based on C++.The experiment results show that the system realizes the accurate measurement of the solid flow rate,and the working performance of the system is stable and effective j ust as expected.