| 基于CPLD的高精度可调脉冲信号发生器研制 |
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| 引用本文： | 樊多盛,施韶华,李孝辉.基于CPLD的高精度可调脉冲信号发生器研制[J].时间频率学报,2014(1):25-33. |
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| 作者姓名： | 樊多盛 施韶华 李孝辉 |
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| 作者单位： | [1]中国科学院国家授时中心,西安710600 [2]中国科学院时间频率基准重点实验室,西安710600 [3]中国科学院大学,北京100049 |
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| 基金项目： | 国家自然科学基金资助项目（61001076）;国家重大科研仪器设备研制专项资助项目（61127901） |
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| 摘 要： | 为满足精密时间间隔测量设备的测试需要，研制了一种时间间隔可调的高精度脉冲信号发生器。利用计算机串口控制的方式，结合复杂可编程逻辑器件（CPLD）集成度高、可靠性好及工作速度快的优点，采用A1tera公司的设计软件QuartusII进行设计仿真及实现。仿真与实测实验表明，该脉冲信号发生器不仅可以产生单路可调脉冲信号，而且能产生多路可调脉冲信号，产生的单路秒脉冲信号的1s取样Allan方差为1．84×10^-11；产生的时间间隔为100ns的多路脉冲信号的1s取样Allan方差为2．36×10^-11，2路信号之间的时间间隔数据系列的峰一峰值为101ps，可以满足多通道时间间隔测量设备测试要求的稳定度与准确度。
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| 关 键 词： | 脉冲信号发生器 复杂可编程逻辑器件（CPLD） 时间间隔 |
Development of an adjustable high-precision pulse signal generator based on CPLD |
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| FAN Duo-sheng,SHI Shao-hua,LI Xiao-hui.Development of an adjustable high-precision pulse signal generator based on CPLD[J].Journal of Time and Frequency,2014(1):25-33. |
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| Authors: | FAN Duo-sheng SHI Shao-hua LI Xiao-hui |
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| Institution: | 1. National Time Serwice Center, Chinese Academy of Sciences, Xi＇an 710600, China; 2. Key Laboratory of Time and Frequency Primary Standards, National Time Service Center, Chinese Academy of Sciences, Xi＇an 710600, China; 3. University of Chinese Academy of Sciences, Beijing 100049, China) |
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| Abstract: | To meet the test requirement of the precise time interval measurement equipments, we designed a phase-adjustable high-precision pulse signal generator. In the design, simulation and hardware-implementation, the computer serial port control mode was adopted, the complex programmable logic device （CPLD）, which has the advantages of high level of integration/good reliability/fast operating speed, was utilized, and the Altera＇s Quartus II software was adopted. The result of simulation and experiment shows that the pulse signal generator can not only generate a single adjustable pulse signal, but also generate the multi-channel adjustable pulse signals. The Allan（r= 1 s） for the single 1PPS signal is 1.84 ×10^-11, the Allan variance（r= 1 s） for the multi-channel pulse signals with a time interval of 100 ns is 2.36×10^-11, and the peak-peak value of the time interval data series for two channels of signal is 101 ps. This pulse signal generator can meet the needs of the multi-channel time interval measurement equipment in stability and accuracy. |
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| Keywords: | pulse signal generator CPLD（complex programmable logic device） time interval |
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