基于SOPC/Nios-Ⅱ与数字移相技术的频率计设计  

Realization of Digital Phase Shift Cymometer Based on SOPC/Nios-Ⅱ Technology

作　　者：汪振[1,2] 宋跃[1] 雷瑞庭[1] 许浩[1,2] 

机构地区：[1]东莞理工学院电子工程学院,广东东莞523808 [2]华南理工大学电力学院,广东广州510640

出　　处：《仪表技术与传感器》2009年第10期39-42,共4页Instrument Technique and Sensor

基　　金：广东省工业攻关计划项目(2005B10101042);东莞市2006年科技计划项目(第2批序号11)

摘　　要：为实现uClinux下的电子测量集成仪器中的数字频率计设计,采用Cyclone系列FPGA芯片EP1C6Q240,运用SOPC软核设计、Nios-Ⅱ软件开发技术、数字移相技术,实现了0.02 Hz^225 MHz,1×10-6精度的频率及脉宽、相位差的测量。实验表明,这是一种有效、低成本的解决方案。在重点给出该技术实现方法的同时,介绍了系统仿真和误差分析。In order to design digital cymometer as a part of electronic measuring integrated instrument with uClinux operating system. The design of high accurate digital cymometer is to measure frequency and pulse based on SOPC soft corn/NioslI technology and digital phase shift technology,utilizing cyclone series FPGA chip EP1C6Q240. The range of frequency is from 0. 02 Hz to 225 MHz. The relative accuracy of measurement is less than 1 × 10^-6. The experiment proves that it is an effective and low-cost solution. It contains the design of SOPC soft IP and NioslI software development. The detail of design method was given, as well as the SignalTap II simulation and error analyze.

关 键 词：片上系统 可编程器件 数字移相技术 数字频率计 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置] TM935[自动化与计算机技术—控制科学与工程]