数字式智能涡街流量计系统的设计  

Design of Intelligent Vortex Shedding Flowmeter System

作　　者：蔡锷[1] 钱志博[1] 高文英[2] 

机构地区：[1]西北工业大学航海工程学院,陕西西安710072 [2]海军驻西安弹药专业军事代表室,陕西西安710043

出　　处：《仪表技术与传感器》2005年第6期15-17,共3页Instrument Technique and Sensor

摘　　要：设计了以TMS320LF2407A为信号采集处理单元,P89LPC932为控制单元,配有LCD液晶显示模块和红外通讯接口的主从式数字式智能涡街流量计系统。针对目前涡街流量计易受干扰,精度不高的问题,信号采集处理单元采用基于DFT的频率估计方法,实现对传感器信号频率的估计。Introduced the principal and subordinate digital intelligent vortex shedding flowmeter system that controlled by P89LPC932,signal sampling and processing by TMS320 LF2407A,display data by LCD and has the interface of infrared communication.According to the drawbacks of be liable to interfere and poor in precision in the vortex shedding flowmeter,a new method based on DFT was used to estimate the frequency of input signal.

关 键 词：红外通讯 频率估计 涡街流量计 

分 类 号：TP346[自动化与计算机技术—计算机系统结构]