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

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, ...

AI Technical Summary

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.

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