| 基于EP2C8Q208C8型FPGA等精度频率测量仪设计 |
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| 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, 31(1): 56-59 |
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| 作者姓名： | 王皑 佘丹妮 |
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| 作者单位： | 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 |
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| 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。
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| 关 键 词： | 等精度 频率测量仪 EP2C8Q208C8 FPGA NiosⅡ |
The Design of Equal Precision Frequency Meter Based on the EP2C8Q208C8 FPGA |
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| WANG Gai,SHE Dan-ni. The Design of Equal Precision Frequency Meter Based on the EP2C8Q208C8 FPGA[J]. Computing Technology and Automation, 2012, 31(1): 56-59 |
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| Authors: | WANG Gai SHE Dan-ni |
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| Affiliation: | 1.Depantment of Electrica Engineering,HuNan Industry Polytechnic,Changsha 410208,China; 2.College of Information Science and Technology,Dong Hua Univercity,Shanghai 201620,China) |
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| 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. |
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| Keywords: | equal precision frequency meter EP2C8Q208C8 FPGA Nios Ⅱ |
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