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High-precision frequency domain stability measuring device

A measurement device and stability technology, which are applied in the field of high-precision frequency-domain stability measurement devices, can solve problems such as low measurement accuracy and narrow time-domain frequency signal measurement range, achieve high phase accuracy, improve measurement accuracy and measurement accuracy. The effect of the frequency range

Inactive Publication Date: 2017-06-13
JIANGHAN UNIVERSITY
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Problems solved by technology

[0003] The invention provides a high-precision frequency-domain stability measurement device and method, which solves the technical problems of narrow time-domain frequency signal measurement range and low measurement accuracy in the prior art, and achieves the goal of improving measurement accuracy and measurement frequency range technical effect

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  • High-precision frequency domain stability measuring device

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Embodiment Construction

[0029] In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] This application provides a high-precision frequency domain stability measurement device, please refer to figure 1 , the measuring device includes: a frequency switching module, a reference source module, a phase comparison module, a high-resolution counting module, a central processing unit and a frequency division module.

[0031] The reference source module is a high-stability frequency signal source, and the reference source module includes a short-term stable extremely high clock source and a long-term stable extremely high atomic clock.

[0032] For frequency switching modules

[0033] see figure 2 , the frequency switching module includes a secondary processing module, the frequency switching module is used to convert the measure...

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Abstract

The invention discloses a high-precision frequency domain stability measuring device and method. The high-precision frequency domain stability measuring device comprises a frequency switching module, a reference source module, a phase comparing module, a high-resolution counting module, a central processing unit and a frequency dividing module, wherein the frequency switching module comprises a secondary processing module and is used for converting measured time domain signals into standard 1 KHz first frequency signals and transmitting the standard 1 KHz first frequency signals to the secondary processing module and the high-resolution counting module when the reference source module serves as a time base; the secondary processing module is used for processing the first frequency signals and outputting 100 Hz second frequency signals to the phase comparing module; the frequency dividing module is used for performing frequency division on the signal frequency of the reference source module and outputting sampling time signals to the phase comparing module.

Description

technical field [0001] The invention relates to the field of tower crane control, in particular to a high-precision frequency domain stability measuring device and method. Background technique [0002] Frequency stability is an important index to measure the stability of a clock signal source output frequency signal. Among various frequency sources, especially for crystal oscillators, the stability problem is the most concerned problem, which means the ability to maintain frequency stability. For a frequency source with poor stability, it is meaningless to adjust the accuracy higher. However, in the prior art, the measurement range of the time-domain frequency signal is relatively narrow, and the measurement accuracy is not high. Contents of the invention [0003] The invention provides a high-precision frequency-domain stability measurement device and method, which solves the technical problems of narrow time-domain frequency signal measurement range and low measurement...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R23/12
CPCG01R23/12
Inventor 雷海东
Owner JIANGHAN UNIVERSITY
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