Pulse per second generating device and method and measuring system and method of digital clock

Abstract

The invention relates to a pulse per second generating device and method and a measuring system and method of a digital clock and belongs to the field of digital clock metering. A photoelectric diodeis used for detecting a second-bit nixie tube of a digital clock, multiple paths of detection signals are amplified through an amplification circuit to obtain voltage signals, TTL level signals are output after the voltage signals are compared with preset voltage, and the TTL level signals are sent to a pulse generation circuit directly or after being inverted through an inverter to generate pulsesignals. And finally, OR operation is conducted through a second pulse synthesis circuit to generate a second pulse signal of a digital clock, a reference time signal generated by a reference time frequency source is taken as a starting signal, the second pulse signal is taken as a stopping signal, and a time interval error between the starting signal and the stopping signal is measured; and thus, accurate measurement and calibration of the digital clock are realized.

Description

technical field [0001] The invention relates to the field of digital clock measurement, in particular to a digital clock second pulse generation device, method, measurement system and method. Background technique [0002] In recent years, the punctuality and synchronization technology of digital clocks has been developed rapidly, and the precision of punctuality has been continuously improved, which has brought new problems for measuring digital clocks. At present, the measurement method of the digital clock is mainly to measure its signal output interface, and determine its deviation from the standard time through observation, but what this method measures is the time difference of the signal output interface, and the time difference of the signal output interface is not It cannot represent the time difference of the digital clock display time, and at the same time, the time difference of the digital clock cannot be quantitatively measured by means of observation and compar...

AI Technical Summary

Problems solved by technology

At present, the measurement method of the digital clock is mainly to measure its signal output interface, and determine its deviation from the standard time through observation, but what this method measures is the time difference of the signal output interface, and the time difference of the signal output interface is not It cannot represent the time difference of the digital clock display time, and at the same time, the time difference of the digital clock cannot be quantitatively measured by means of observation and comparison

In addition, the digital clocks currently on the market basically do not have the second pulse output function, and the time display resolution is not high. They are basically used in low-precision scenarios, and it is difficult to analyze and measure their punctual accuracy and time deviation below the second level.

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