Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Frequency scale comparison device and method

A frequency standard and reference frequency standard technology, applied in frequency measurement devices, frequency-to-phase shift conversion, etc., can solve the problems of difficult to meet the design requirements of miniaturized test devices, complex circuit structure, and high hardware cost

Active Publication Date: 2021-07-06
北京跟踪与通信技术研究所
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The circuit structure of the above method is complicated, the hardware cost is high, and it is difficult to meet the design requirements of miniaturized test equipment

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
  • Frequency scale comparison device and method
  • Frequency scale comparison device and method
  • Frequency scale comparison device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily realize them. Also, for clarity, parts not related to describing the exemplary embodiments are omitted in the drawings.

[0045] In the present disclosure, it should be understood that terms such as "comprising" or "having" are intended to indicate the presence of features, numbers, steps, acts, components, parts or combinations thereof disclosed in the specification, and are not intended to exclude one or a plurality of other features, numbers, steps, acts, parts, parts or combinations thereof exist or are added.

[0046] In addition, it should be noted that, in the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings...

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 embodiment of the invention discloses a frequency scale comparison device and method. The device comprises a microcontroller, a direct digital frequency synthesizer and a phase discriminator; the direct digital frequency synthesizer is used for adjusting a reference frequency scale to generate a reference signal with the same frequency as the initial measurement frequency of a measured frequency scale, and transmitting the reference signal to the phase discriminator; the phase discriminator is used for carrying out phase discrimination on the reference signal and the measured frequency scale and then outputting an error voltage; and the microcontroller is used for periodically collecting the error voltage and controlling the direct digital frequency synthesizer to adjust the reference frequency scale according to the difference value between the error voltage and a set value, so that the phase discriminator realizes phase locking of the measured frequency scale according to the adjusted reference signal. According to the technical scheme, the problem that the frequency accuracy and the frequency stability of any measured signal can be measured without frequency synthesis and conversion is solved, the complexity of a frequency scale comparison device is effectively reduced, and the cost is reduced.

Description

technical field [0001] The present disclosure relates to the technical field of time-frequency measurement, and in particular to a frequency standard comparison device and method. Background technique [0002] The frequency standard comparator is a commonly used test instrument in the time-frequency field, and is often used to measure the time-domain or frequency-domain characteristics of the frequency standard. Input the frequency standard under test and the reference frequency standard respectively during use, measure the frequency and phase deviation values ​​between the frequency standard under test and the reference frequency standard, and obtain the frequency accuracy, frequency stability and frequency drift rate of the frequency standard under test through subsequent calculations , frequency aging rate and other indicators. [0003] The main principle of the universal frequency standard comparator is to improve the resolution of frequency measurement through frequenc...

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 Applications(China)
IPC IPC(8): G01R23/02G01R23/12
CPCG01R23/02G01R23/12
Inventor 陈旭东王敬喻韬刘岩马立波徐华正王宇
Owner 北京跟踪与通信技术研究所
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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