摘要
本文针对工业测试现场中方波频率信号的高频噪声污染问题,选用LabVIEW中提供的脉宽滤波、数据采集等功能模块组建了虚拟计数滤波器,设计并实现了一种可靠、便捷的方波频率信号的数字滤波。工程实践表明,该方法能有效降低尖峰干扰对频率测量精度的影响。
This paper discuss a project to solve the high-frequency noise pollution which disturb square-wave frequency signals in the testing industrial scene. And it adopt some function mold pieces of LabVIEW such as Pulse Width Filter, DAQmx-Date Acquisition to set up a virtual counter filter. Design and carried out a kind of dependable and convenient square wave frequency signal of digital filter. The engineering fulfillment expresses that method can lower peak interference to measure accuracy to the frequency effectively of influence.
出处
《微计算机信息》
2009年第28期77-79,共3页
Control & Automation
基金
基金申请人:杨建武
项目名称:数字化
智能化印刷机械关键技术与装备
基金颁发部门:中国科学技术部(13001790200701)
关键词
计数滤波器
方波频率信号
尖峰干扰
Counter Filter
square wave frequency signal
rush interference
