基于T-V转换的极短时间间隔测量方法

摘要

针对时频测量出现的士1误差,即极短的时间间隔,提出一种基于多周期同步与模拟内插结合的时间电压转换法.利用D触发器、集成运放等设计了该方法的相应电路,成功实现了不受时钟频率影响的测量模块,并将测量误差减小至0.02％,减小了极短时间间隔对测量精度的影响.%Aiming at ± 1 error in the measurement of time-frequency,which is a very short time interval,a time to voltage conversion method based on multi-cycle synchronization and analog interpolation combination is proposed.A circuit is designed to implement this method by using D flip-flop and integrated operational amplifier.The measuring module regardless of the clock frequency is successfully achieved,the measurement error is reduced to 0.02 ％,the effect of measurement accuracy by the very short time interval is effectively reduced.