基于相位重合检测技术的虚拟频率计设计  

Design of Virtual Frequency Meter Based on "Phase Coincidence" Detection Technique

作　　者：康钦马[1] 姜海宁[1] 周渭[2] 

机构地区：[1]山东大学威海分校信息工程学院 [2]西安电子科技大学信息处理研究所

出　　处：《电子测量与仪器学报》2005年第2期45-48,共4页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金资助课题 (资助号 :6 0 0 72 0 37)

摘　　要：本文介绍了一种新型的高分辨率测频技术—相检宽带测频技术。该技术有效克服了± 1个数的计数误差 ,使得仪器的测量精度比普通仪器提高了 10 0 0倍以上 ,且设备构成简单、成本低 ,易于实现。本文研究了与虚拟仪器设计和实现相关的一些技术和方法 ,实现了虚拟频率计设计 。This paper introduces a new kind of frequency measurement technique of high resolution: the frequency measurement technique by broad-band phase coincidence detection. The instrument based on the new technique shows more than 1000 times accuracy over that of ordinary instruments because it is effective enough to overcome ±1 word count error of digital measuring instruments. The instrument is simple in structure, low in cost and facile in implementation. The paper studied some techniques and methods related with the design and realization of virtual instrument and realized the design of virtual frequency meter, also some key problems in the system are analyzed.

关 键 词：虚拟频率计 检测技术 重合 相位 虚拟仪器设计 测频技术 高分辨率 计数误差 普通仪器 测量精度 设备构成 关键问题 成本低 

分 类 号：TH122[机械工程—机械设计及理论] TM935.13[电气工程—电力电子与电力传动]