基于EP2C8Q208C8型FPGA等精度频率测量仪设计

王皑; 佘丹妮

基于EP2C8Q208C8型FPGA等精度频率测量仪设计

引用本文：王皑，佘丹妮.基于EP2C8Q208C8型FPGA等精度频率测量仪设计[J].计算技术与自动化,2012,(1):56-59

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作者	单位
王皑，佘丹妮	(1.湖南工业职业技术学院电气工程系，湖南长沙410208；2.东华大学信息科学与技术学院，上海201620）

中文摘要:设计一种以Altera公司生产的CycloneII系列EP2C8Q208C8器件为核心实现高精度计数功能频率测量仪，本频率测量仪对传统的等精度测量方法进行改进，采用SOPC设计技术对NIOS II软核处理器进行浮点数据运算处理。整个电路采用模块化设计，系统测量精度高，频率测量范围为1Hz--10MHz，并利用液晶显示器对测量的频率进行实时显示，可读性好。

中文关键词:等精度频率测量仪 EP2C8Q208C8 FPGA Nios II

The Design of Equal Precision Frequency Meter Based on the EP2C8Q208C8 FPGA

Abstract:This paper presents a frequency meter that using EP2C8Q208C8 devices of CycloneII series produced by Altera Corporation as the core to achieve high-precision counting. This frequency meter, applying SOPC technology to operate floating-point data on NIOS II soft core processor, improves the traditional equal precision measurement. The circuit adopts modular design so the system has a high measurement precision, and the range of measuring frequency is from 1Hz to 10MHz.In addition, the design, with a good readability, has a liquid crystal display to realise real-time display of measured frequency.

keywords:equal precision frequency meter EP2C8Q208C8 FPGA Nios II

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