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

Precise time measuring method

A time measurement and precision technology, applied in the direction of electrical unknown time interval measurement, phase measurement with measurement, time interval measurement device, etc., can solve the problem of decimal times square wave width error and so on

Inactive Publication Date: 2009-08-26
BEIHANG UNIV
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the usual measurement methods, due to the characteristics of the square wave waveform, it is generally only accurate to an integer number of square waves, and an error of fractional times the width of the square wave is introduced.

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
  • Precise time measuring method
  • Precise time measuring method
  • Precise time measuring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] The present invention will be further described in detail below. see figure 1 , the present invention is composed of a waveform conversion module, an analog-to-digital conversion module, a counting module, and a central processing module.

[0011] The function completed by the A waveform conversion module is to convert the square wave signal into a synchronous triangular wave signal. figure 2 A (not limited to) waveform conversion method realized by MAX038 is given.

[0012] The function completed by the B analog-to-digital conversion module is: under the action of the start pulse and the stop pulse, perform corresponding analog-to-digital conversion on the triangular wave. Among them, the conversion is required to be completed within a start or stop pulse.

[0013] The function completed by the C counting module is to count the integer times square wave period between the start pulse and the end pulse, and obtain the square wave integer times timing information.

...

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 invention relates to a precise time measuring method, consisting of a waveform conversion module, an analog-to-digital conversion module, a counting module and a central processing module. The invention has the advantages that a method for eliminating decimal phase error of square wave is provided, and the method effectively improves the time measuring precision with lower cost.

Description

technical field [0001] The invention relates to a precise time measurement method, more specifically, a method for converting a square wave into a triangular wave by using waveform conversion, thereby performing precise time measurement. Background technique [0002] In many applications, it is necessary to obtain accurate time information. In the usual measurement methods, due to the characteristics of the square wave waveform, it is generally only accurate to an integer number of square waves, and an error of fractional times the width of the square wave is introduced. Thus, the margin of error is the width of a square wave. [0003] The precise time measurement method is an effective technical means for reducing the time measurement error. It converts the square wave into a triangle wave, and obtains the precise phase of the square wave through the measurement of the amplitude of the triangle wave, thereby obtaining precise time information. Contents of the invention ...

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): G04F10/04G04F10/06H03K5/00
Inventor 李署坚宋伟宁文霄杰孙宇明
Owner BEIHANG UNIV
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