Reliable time scale pulse measurement method and measurement device thereof

A technology of time-scale pulse and measurement method, which is applied in frequency measurement device, pulse processing, pulse shaping, etc., can solve the problems such as the inability to eliminate the abnormal illusion of line interference, the limited number and level of interfaces, and the inability of empty contact signals to achieve high speed. Efficient counting operation, accurate and reliable measurement results, and the effect of increasing the range of use

Active Publication Date: 2010-10-27
郑州威科姆科技股份有限公司
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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 i

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  • Reliable time scale pulse measurement method and measurement device thereof
  • Reliable time scale pulse measurement method and measurement device thereof
  • Reliable time scale pulse measurement method and measurement device thereof

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Embodiment Construction

[0041] Such as figure 1 As shown, the reliable time scale pulse measurement method that the present invention refers to comprises the following steps:

[0042] ① Convert the 10MHZ frequency signal of the precise clock source, the standard 1PPS signal and the 1PPS, 1PPM, 1PPH signals to be tested into pulse signals. In the present invention, the standard 1PPS signal comes from an external clock source, such as rubidium clock, cesium clock, etc., so its high reliability and accuracy can be guaranteed.

[0043] ② Multiply the 10MHZ frequency signal of the precise clock source to obtain a 100MHZ frequency signal, and use the 100MHZ frequency signal as the working frequency of the FPGA; at the same time, divide the standard 1PPS signal by 60 to obtain a 1PPM reference signal, and divide the standard 1PPS signal by 3600 Get 1PPH reference signal. Considering that signal access, line transmission, signal processing and environmental interference will cause signal glitches. These g...

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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...

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Application Information

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IPC IPC(8): G01R23/10H03K5/00G05B15/02H03K5/01
Inventor 贾小波吴淑琴游海港李军华
Owner 郑州威科姆科技股份有限公司
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