| 基于单片机和CPLD的高精度频率计设计 |
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| 引用本文： | 欧阳乔.基于单片机和CPLD的高精度频率计设计[J].装备制造技术,2009(2). |
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| 作者姓名： | 欧阳乔 |
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| 作者单位： | 无锡商业职业技术学院电子工程系,江苏,无锡,214153 |
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| 摘 要： | 介绍了利用CPLD进行测频计数,单片机实施控制实现多功能频率计的设计电路的方法.利用等精度的设计方法,克服了基于传统测频原理的频率计的测量精度随被测信号频率的下降而降低的缺点,利用CPLD来实现频率、周期、脉宽和占空比的测量计数,利用单片机完成整个测量电路的测试控制、数据处理;显示输出部分也由CPLD来完成.
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| 关 键 词： | 频率计 等精度 单片机 |
Design of a High Precision Frequency Meter Based on MCU and CPLD |
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| Authors: | OUYANG Qiao |
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| Affiliation: | Electronic Engineering Department of Wuxi Institute of Commerce;Wuxi Jiangsu 214153;China |
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| Abstract: | It introduces how to design a multifunctional cymometer circuit which is controlled by a MCU,using CPLD to measure frequency and take counting.With design of equal precision,the cymometer avoids traditional cymometer's defect that precision will get worse as the frequency measured decline,because it uses CPLD to measure frequency,period,pulse width and duty ratio,and used MCU to do testing control and data processing of the whole circuit;and display output is done by CPLD. |
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| Keywords: | CPLD |
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