equal precision frequency measurement

基本解释

A digital frequency meter designed by using equal precision measurement, have realized the frequency measurement.
利用等精度测量原理实现了频率的测量。
This design uses FPGA chip and VHDL program to improve the stability of frequency detecting system and realize equal precision measurement of frequency, period, pulse width and duty ratio.
选用FPGA芯片通过VHDL编程实现，提高了测频系统的稳定性，可实现频率、周期、脉宽和占空比的等精度测量。
A wetness measurement system based on cavity perturbation method is designed for precise measuring, including automatic frequency tracing system and equal precision frequency measurement system.
以汽轮机内蒸汽湿度的准确测量为目的，设计了基于微波谐振腔微扰法的蒸汽湿度测量系统：自动频率跟踪系统和等精度频率测量系统。