Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method and device for measuring motion speed of object based on electromagnetic induction principle

A technology of object movement and electromagnetic induction, applied in the field of measurement, can solve the problems of high cost and high cost of laser Doppler velocimeter, and achieve the effect of solving high cost and improving user experience

Active Publication Date: 2021-09-03
NAT INST OF METROLOGY CHINA
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Laser Doppler velocimeters are expensive and are usually used as laboratory measuring instruments, and most of them are imported from abroad, so the cost is too high for industrial applications

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
  • Method and device for measuring motion speed of object based on electromagnetic induction principle
  • Method and device for measuring motion speed of object based on electromagnetic induction principle
  • Method and device for measuring motion speed of object based on electromagnetic induction principle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The embodiment of the present invention provides a method for measuring the moving speed of an object based on the principle of electromagnetic induction. figure 1is a flowchart of a measuring method according to an embodiment of the present invention, such as figure 1 shown, including:

[0032] Step S102, set the sample magnetic object 1 at the first acceleration a 1 passing through the conductive closed coil 2;

[0033] Step S104, when the induced voltage of the conductive closed coil 2 reaches the first specific value and the second specific value, acquire the time node signal t when the sample magnetic object 1 passes through the conductive closed coil 2 corresponding to two specific points 1 and t 2 , and calculate the interval time T 1 : T 1 = t 1 -t 2 ;

[0034] Step S106, using the laser velocity measuring device 3 to measure the velocity v of the sample magnetic object 1 passing through the two specific points 1 and v 2 , and through the formula Cal...

Embodiment 2

[0054] On the basis of the first embodiment above, the embodiment of the present invention also provides another method for measuring the moving speed of an object based on the principle of electromagnetic induction, such as figure 1 shown, including:

[0055] Steps S102-S114 and their specific implementation methods can refer to the detailed description in the first embodiment above, and will not be repeated in the embodiment of the present invention.

[0056] In a preferred embodiment, step S104, when the induced voltage of the conductive closed coil 2 reaches a first specific value and a second specific value, specifically includes that the first specific value is the positive maximum value of the induced voltage , and the second specific value is the reverse maximum value of the induced voltage.

[0057] During the specific implementation process, since the process time for the sample magnetic object 1 to pass through the conductive closed coil 2 with a certain accelerati...

Embodiment 3

[0066] On the basis of the first embodiment above, the embodiment of the present invention also provides another method for measuring the moving speed of an object based on the principle of electromagnetic induction, such as figure 1 Shown include:

[0067] Steps S102-S114 and their specific implementation methods can refer to the detailed description in the first embodiment above, and will not be repeated in the embodiment of the present invention.

[0068] In a preferred embodiment, step S104 is to obtain the time node signal t of two specific points corresponding to the sample magnetic object 1 passing through the conductive closed coil 2 1 and t 2 , specifically comprising, using an oscilloscope to obtain the waveform curve of the induced voltage changing with time, so as to obtain the time node signal t at the first specific value and the second specific value on the waveform curve 1 and t 2 .

[0069] Among them, the oscilloscope is an instrument that can graphically...

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 the field of measurement, and provides a method and a device for measuring the movement speed of an object based on an electromagnetic induction principle.In a laboratory, a sample magnetic substance passes through a conductive closed coil at a fixed acceleration, time node signals of specific points corresponding to two specific voltage values of the sample magnetic substance in the conductive closed coil are obtained according to the induced voltage change rule, interval time T1 is obtained, the speeds of the sample magnetic substance at the two specific points are measured through a laser speed measuring device, and displacement S is obtained through calculation; during measurement, a measured object passes through the conductive closed coil at a fixed acceleration after being magnetized, time node signals of the measured object at two specific points are obtained according to the induced voltage change rule, the interval time T2 is calculated, and then the average speed of the measured object passing through the two specific points is calculated according to the interval time T2 and the displacement S. The speed measurement method and device are low in cost and high in precision, and the user experience is improved.

Description

technical field [0001] The invention relates to the field of measurement technology, in particular to a method and device for measuring the moving speed of an object based on the principle of electromagnetic induction. Background technique [0002] Speed ​​measurement technology is more and more widely used in industrial production and life. In the field of high-precision speed measurement, laser Doppler speed measurement technology is usually used. This technology has the advantages of fast measurement speed, high precision, and strong anti-interference ability. It can adapt to Various harsh environments, stable and reliable measurement. [0003] However, in the process of realizing the technical solution of the invention in the embodiment of the present application, the inventor of the present application found that the above-mentioned technology has at least the following technical problems: [0004] Laser Doppler velocimeters are expensive and are usually used as labora...

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
IPC IPC(8): G01P3/66G01P3/68
CPCG01P3/66G01P3/68
Inventor 叶明张竟月崔园园张峰刘吉萍
Owner NAT INST OF METROLOGY CHINA
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com