| 低频数字式相位测试仪的设计与实现 |
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| 引用本文： | 尹晓慧,陈劲,张宝菊,王为. 低频数字式相位测试仪的设计与实现[J]. 天津师范大学学报(自然科学版), 2012, 32(1): 39-42 |
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| 作者姓名： | 尹晓慧 陈劲 张宝菊 王为 |
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| 作者单位： | 天津师范大学物理与电子信息学院,天津,300387 |
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| 基金项目： | 天津市自然科学基金资助项目，天津市高等学校科技发展基金资助项目 |
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| 摘 要： | 基于过零检测法，以微控制器ATmegal28和可编程逻辑器件EPMl270为核心，设计并实现了对双路同频低频信号的相位差和频率进行测量的系统．在一个可编程逻辑器件（ComplexProgrammableLogicDevice，CPLD）内实现了数字式相位差和频率的数据采集，简化了系统设计．系统可以对200Hz～10kHz频率范围内的信号进行相对精确的测量，与传统相位测量仪相比，具有硬件电路简单、测量速度快和易于实现等优点．
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| 关 键 词： | 相位测量 频率测量 CPLD 微控制器 液晶显示 |
Design and realization of low-frequency digital phase measuring apparatus |
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| YIN Xiao-hui , CHEN Jin , ZHANG Bao-ju , WANG Wei. Design and realization of low-frequency digital phase measuring apparatus[J]. Journal of Tianjin Normal University(Natural Science Edition), 2012, 32(1): 39-42 |
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| Authors: | YIN Xiao-hui CHEN Jin ZHANG Bao-ju WANG Wei |
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| Affiliation: | College of Physics and Electronic Information Science,Tianjin Normal University,Tianjin 300387,China |
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| Abstract: | Based on the principle of zero-crossing,taking microcontroller ATmega128 and complex programmable logic device(CPLD) EPM1270 as the core,a system used for measuring the two-circuit frequency and low-frequency signal phase difference and the frequency of the measured signal is designed and realized.The data acquisition of the digital phase difference and the frequency is carried out in a piece of CPLD chip,and the system design is simplified.The system can measure the signal of frequency range of 200 Hz-10 kHz.Compared with the traditional phase meter,the system has the advantages of simple hardware circuit,rapid speed and easy realization. |
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| Keywords: | phase measurement frequency measurement CPLD MCU LCD display |
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