高精度DSP涡街信号处理方案  

High Precision Vortex Signal Processing Method Based on DSP

作　　者：戴华平[1] 沈非凡[1] 钱嘉伟[1] 黄满金[1] 

机构地区：[1]浙江大学控制科学与工程学系工业控制研究所,浙江杭州310027

出　　处：《自动化仪表》2013年第3期87-90,94,共5页Process Automation Instrumentation

摘　　要：针对涡街流量计信号较为微弱、易受噪声干扰等问题,以TMS320LF2407A DSP微处理器为核心,设计了高精度涡街信号处理系统。具体介绍了系统结构,并给出了详细的硬件设计方案。采用Mallat快速小波变换的算法实现涡街信号去噪,并概述了系统软件设计方法。仿真试验表明,该系统具有精度高、实时性强、性价比高等特点,有一定的工程实用价值。Aiming at the problem that the vortex signal is quite weak and vulnerable to noise, with TMS320LF2407A DSP microprocessor as the core, the high precision vortex signal processing system is implemented. The systematic structure is introduced specificly, and the design strategy and method of hardware and software are given in detail. By adopting Mallat fast speed wavelet transform algorithm the de-noising of the vortex signal is implemented. The experimental result shows that the system features high accuracy, good real time performance and well costeffectiveness, and possesses certain applicable values.

关 键 词：DSP 涡街流量计 信号处理 高精度 小波变换 快速算法 

分 类 号：TP216.1[自动化与计算机技术—检测技术与自动化装置]