| 基于单片机和FPGA的多功能计数器的设计 |
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| 引用本文： | 张清,董翔,李莹. 基于单片机和FPGA的多功能计数器的设计[J]. 国外电子元器件, 2009, 17(7): 40-41 |
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| 作者姓名： | 张清 董翔 李莹 |
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| 作者单位： | 武汉大学电子信息学院; |
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| 摘 要： | 以89S52单片机和EP1C6Q240C8型FPGA为控制核心的多功能计数器，是由峰值检波、A／D转换、程控放大、比较整形、移相网络部分组成，可实现测量正弦信号的频率、周期和相位差的功能。多功能计数器采用等精度的测量方法，可实现频率为1Hz-10MHz、幅度为0．01～5Vrms的正弦信号的精确测频，以及频率为10Hz-100kHz、幅度为0．5～5Vrms的正弦信号精确测相。液晶显示器能够实时显示当前信号的频率、周期和相位差。该多功能计数器精度高，界面友好，实用性强。
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| 关 键 词： | FPGA 等精度测频 测相 多功能计数器 |
Design of multi-function counter based on SCM and FPGA |
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| ZHANG Qing,DONG Xiang,LI Ying. Design of multi-function counter based on SCM and FPGA[J]. International Electronic Elements, 2009, 17(7): 40-41 |
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| Authors: | ZHANG Qing DONG Xiang LI Ying |
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| Affiliation: | School of Electronic Information;Wuhan University;Wuhan 430079;China |
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| Abstract: | A multi-function counter,which uses 89S52 MCU and EP1C6Q240C8 FPGA as a control core,consists of peak detector,A/D conversion,program-controlled amplification,compared shaping and phase-shifting network part.The counter measures the frequency,period and phase of sinusoidal signal.With the equal precision method,the multi-function counter achieves the precise frequency measurement of the sinusoidal signal which its frequency is from 1Hz to 10MHz,its amplitude is from 0.01Vrms to 5Vrms,as well as the accurate... |
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| Keywords: | FPGA equal precision frequency measurement phase measurement multi-function counter |
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