基于FPGA的高精度自适应闸门频率测量的研究与设计  

High-precision Auto-matching Gate Frequency Meter Based on FPGA

作　　者：马俊 唐林[1] MA Jun;TANG Lin(Electronic Engineering School Sichuan Vocational and Technical College,Suining 629000,China)

机构地区：[1]四川职业技术学院电子工程学院,四川遂宁629000

出　　处：《四川职业技术学院学报》2022年第2期158-162,共5页Journal of Sichuan Vocational and Technical College

摘　　要：频率与周期测量是数字信号处理中一个重要的参数,FPGA是在高速高精度频率测量方面有独特的优势。本文基于等精度测量法的基础上,提出了自适应闸门频率测量方案,在方案可以在测量低频信号时自动根据信号周期的长度而自动的延长闸门时间,从而精确的测量到频率低至0.001Hz的信号的频率,并且不影响中高频段的测量速度。Frequency and period measurement is an important parameter in digital signal processing.FPGA has unique advantages in high speed and high precision frequency measurement.Based on the equal precision measurement method,this paper proposes an adaptive gate frequency measurement scheme,which can automatically extend the gate time according to the length of the signal cycle when measuring low-frequency signals,so as to accurately measure the frequency of signals as low as 0.001Hz without affecting the measurement speed of middle and high frequency bands.

关 键 词：频率测量 自适应闸 FPGA 

分 类 号：TH724[机械工程—仪器科学与技术]