| 低复杂度多功能自适应数字频率计设计 |
| |
| 引用本文： | 王鹏,连帅彬,孙秋菊,钟莉娟.低复杂度多功能自适应数字频率计设计[J].信阳师范学院学报(自然科学版),2016(4):599-603. |
| |
| 作者姓名： | 王鹏 连帅彬 孙秋菊 钟莉娟 |
| |
| 作者单位： | 信阳师范学院物理电子工程学院;同济大学通信软件及专用集成电路设计中心 |
| |
| 基金项目： | 国家自然科学基金项目(61571386);河南省高等学校重点科研项目(15A510011);信阳师范学院青年骨干教师资助计划 |
| |
| 摘 要： | 利用高速运放和比较器实现输入弱小信号的放大及整形,采用FPGA完成对输入信号的精确频率测量.测量范围为1Hz~100MHz,内部分成5个量程,可根据输入信号频率不同自动进行量程切换,并支持对方波的占空比及双通道同源方波时间间隔测量等功能.FPGA测量结果经MCS-51单片机处理后送至LCD完成显示,测量相对误差不大于10-4,可用于各类低成本数字测量仪器研发.
|
| 关 键 词： | 数字频率计 信号放大及整形 现场可编程门阵列 |
Low-complexity Multi-Function Adaptive Digital Frequency Meter Design |
| |
| WANG Peng;LIAN Shuaibin;SUN Qiuju;ZHONG Lijuan.Low-complexity Multi-Function Adaptive Digital Frequency Meter Design[J].Journal of Xinyang Teachers College(Natural Science Edition),2016(4):599-603. |
| |
| Authors: | WANG Peng;LIAN Shuaibin;SUN Qiuju;ZHONG Lijuan |
| |
| Institution: | WANG Peng;LIAN Shuaibin;SUN Qiuju;ZHONG Lijuan;College of Physics & Electronics,Xinyang Normal University;Communication Software & ASIC Design Centre,Tongji University; |
| |
| Abstract: | High-speed amplifier and comparator were adopted to complete waveform amplifying and reshaping.With FPGA as processing core,accurate frequency measurement of input signal can be obtained.5measurement scales were divided to support 1 Hz~100 MHz frequency measurement internally.Automatic scale switch was implemented,too.Furthermore,duty measurement of square wave,and time interval analysis of 2homologous square wave all supported.MCS-51 microcontroller was utilized to complete final result calculation using FPGA's original measurement data,and these results were displayed via LCD.Corresponding relative measurement error was less than 10-4.Presented design can be used for low-cost digital frequency meter design. |
| |
| Keywords: | digital frequency meter signal amplifying &reshaping field programmable gate array |
| 本文献已被 CNKI 等数据库收录！ |
