Reliable time scale pulse measurement method and measurement device thereof

Abstract

The invention discloses a reliable time scale pulse measurement method, which comprises the following steps: 1) converting a 10MHz frequency signal of a precise clock source, a standard 1PPS signal and 1PPS, 1PPM and 1PPH signals to be measured to pulse signals; 2) carrying out frequency doubling on the 10MHz frequency signal of the precise clock source for obtaining a 100MHz frequency signal, and taking the 100MHz frequency signal as the working frequency of an FPGA; simultaneously carrying out frequency division on the standard 1PPS signal and respectively obtaining a 1PPM reference signal and a 1PPH reference signal; and 3) measuring the precision of the 1PPS, the 1PPM and the 1PPH signals to be measured according to the reference signals of 1PPS, 1PPM and 1PPH under the working frequency of 100MHz. The method can realize the high-speed and high-efficient counting operation by adopting a field programmable logic sequence, realize the multi-path and multi-group pulse fast detection, and send the detection result to a user and is characterized by stable performances and convenient maintenance.

Description

technical field [0001] The invention relates to a reliable measurement method of time scale pulse synchronization performance, and relates to a measurement device used for implementing the method. Background technique [0002] With the rapid development of science and technology, people put forward higher and higher requirements for precision time and time accuracy. Power systems, communication systems, traffic systems, etc. have continuously improved requirements for time synchronization, and time synchronization has received more and more attention and applications. [0003] Commonly used time scale synchronization signals mainly include pulse signals such as 1PPS / 1PPM / 1PPH / 1PPX. These signals are used as time standards to access terminal devices that require time synchronization. In order to ensure the correct operation of the large-scale system time synchronization network, it is necessary to detect the time scale pulse signal to ensure the correctness of the clock syn...

AI Technical Summary

Problems solved by technology

[0004] At present, there are many problems in the detection of time scale pulses in practice, such as the number and level of detectable interfaces are limited, and it is powerless to commonly used empty contact signals; the filtering is not ideal or there is no filtering, and abnormal artifacts caused by line interference cannot be ruled out; many Or there is no corresponding detection method to detect the lack of pulse, resulting in unreliable measurement equipment

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