High-accuracy pulse time interval measurement method and circuit

The invention belongs to the technical field of electronic measurement, and particularly relates to a high-accuracy pulse time interval measurement method and circuit. The high-accuracy pulse time interval measurement method comprises the steps of performing amplitude limitation on two paths of pulse signals by an amplitude limitation circuit, performing phase comparison to obtain phase differencepulse by a high-frequency integrated phase detection discriminator, judging, calculating and correcting an error by a DSP after level conversion to obtain a time interval value between the two pathsof pulse signals, and sending the time interval value for displaying. Accurate measurement of a time interval parameter between two paths of same-frequency input pulse signals within a relatively widefrequency range is achieved by comprehensively employing a high-speed phase detection technology and rapid operation and processing of the DSP. 本发明属于电子测量技术领域，具体涉及种脉冲信号的时间间隔测量方法及电路。本发明利用限幅电路对两路脉冲信号限幅，由高频集成鉴相鉴频器比相得到相位差脉冲，经过电平转换后