Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A system and method for multiplexing phase measurement

A measurement system and measurement method technology, applied in clocks, clocks, instruments, etc., can solve problems such as period ambiguity, and achieve the effect of improving calibration accuracy

Active Publication Date: 2022-02-11
NAT INST OF METROLOGY CHINA
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on the above-mentioned technical problems in the prior art, the present invention provides a multi-channel phase comparison system, which uses the adjacent point threshold judgment algorithm to accurately measure the relative frequency deviation between the measured signal and the standard signal, and solves the problems in the prior art. The existing technical problem of "period ambiguity" improves the accuracy of frequency standard calibration

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A system and method for multiplexing phase measurement
  • A system and method for multiplexing phase measurement
  • A system and method for multiplexing phase measurement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0047] Embodiments of the present application will be described below in conjunction with the accompanying drawings, but the present invention is not limited thereto.

[0048] Such as figure 1 As shown, it is a schematic structural diagram of a multi-channel phase comparison measurement system provided by an embodiment of the prese...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention mainly relates to the technical field of frequency measurement, and provides a multi-channel phase comparison measurement system and method. A second output module, a number of time interval counters, a frequency distribution amplifier and a data processing module. The present invention is mainly based on the phase comparison measurement algorithm of the phase difference measurement function of multiple time interval counters. By measuring the phase difference between the output signal of multiple frequency standards to be measured and the reference frequency standard signal, the data processing module calculates the daily average value according to the phase difference value. Relative frequency deviation, and calculate frequency characteristic parameters such as relative frequency deviation, frequency drift rate, daily frequency stability, etc., so as to realize the measurement of long-term characteristics of frequency standards such as cesium atoms, rubidium atoms and quartz crystals, and improve the reliability of frequency standard calibration sex and accuracy.

Description

technical field [0001] The invention relates to the technical field of frequency measurement, in particular to a multi-channel phase comparison measurement system and method. Background technique [0002] Time is one of the seven basic physical quantities in the International System of Units, and it is of undoubted importance. One of the main tasks of time-frequency measurement is to verify various characteristics of frequency standards. The frequency standard commonly used at present is rubidium atom Frequency standard, its main frequency performance indicators include long-term performance and short-term performance. The common equipment for long-term performance testing of rubidium atomic frequency standards is a phase comparator. The basic principle is to measure the standard frequency standard signal and the measured frequency standard signal through the time interval counter. The phase difference of these two signals can obtain the relative frequency deviation of the m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G04D7/00G04F5/14
CPCG04D7/002G04F5/14
Inventor 张越王玉琢林涛
Owner NAT INST OF METROLOGY CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com