Device and method for adjusting relative phase of alternating current voltage and alternating current quantum voltage

A technology of alternating voltage and relative phase, applied in the field of metrology, can solve problems such as the inability to measure sinusoidal signals, and achieve the effect of improving accuracy and measurement efficiency

Inactive Publication Date: 2019-06-11
NAT INST OF METROLOGY CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the actual measurement process, not all signal sources have the function of phase adjustment. When the phase of the sinusoidal signal cannot be adjusted, the measurement of the sinusoidal signal cannot be performed.

Method used

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  • Device and method for adjusting relative phase of alternating current voltage and alternating current quantum voltage
  • Device and method for adjusting relative phase of alternating current voltage and alternating current quantum voltage

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0026] The invention provides a device and method for adjusting the relative phase of an AC voltage and an AC quantum voltage, which is used in a laboratory environment to provide an automatic phase adjustment scheme for AC voltage measurement based on quantum technology. By sampling and calculating the periodic signal, the initial phase of the periodic signal and the ladder wave signal is determined, and the periodic signal is reconstructed in combination with hardware trigger and software delay, so as to realize the automatic adjustment of the relative phase of the periodic signal and the ladder wave signal, so that the periodic signal can be adjusted Measure precisely.

[0027] Such as figure 1 As shown, the present invention provides a device for adjusting the relative phase of AC voltage and AC quantum voltage, including a time reference system, an AC voltage so...

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Abstract

The invention provides a device and method for adjusting the relative phase of an alternating current voltage and an alternating current quantum voltage. The device comprises a time reference system,an alternating current voltage source, an alternating current quantum voltage generating system and a differential measurement system, wherein the time reference system provides a clock; the alternating current voltage source outputs a periodic signal; the alternating current quantum voltage generating system generates a step wave signal as a standard reference signal of the periodic signal; the differential measurement system is configured to collect the periodic signal, calculate a delay, send a generation trigger signal to the alternating current quantum voltage generating system, and calculate a differential signal between the periodic signal and the step wave signal. According to the scheme of the invention, a software delay and hardware trigger combination mode is adopted, the automatic adjustment of the relative phase of a sinusoidal signal and the step wave signal can be realized, the phase adjustment accuracy and the measurement efficiency can be improved, the problem that part of the alternating current voltage sources cannot perform phase adjustment can also be solved, and thus the alternating current voltage measurement based on a quantum technology has better universality.

Description

technical field [0001] The invention belongs to the field of metering, and in particular relates to a device and a method for adjusting the relative phase of an AC voltage and an AC quantum voltage. Background technique [0002] With the reform of the International System of Units, realizing the traceability of basic physical quantities to physical constants has become the future development direction. At present, a sinusoidal signal AC voltage measurement device and method based on the step wave signal AC quantum voltage has been established internationally. This method has realized the measurement of AC voltage with a frequency lower than 1 kHz. When using a step wave signal for AC voltage measurement, it must be ensured that the sinusoidal signal intersects with the step center of the step wave signal. For the adjustment of the relative phase of the step wave signal and the sinusoidal signal, manual adjustment is adopted. By adjusting the phase of the sinusoidal signal, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/00
Inventor 贾正森王磊刘志尧黄洪涛贺青刘方兴徐晴段梅梅赵双双
Owner NAT INST OF METROLOGY CHINA
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