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

Vibration displacement measurement device on basis of optical interference

A technology of vibration device and diffraction device, which is applied to measuring devices, adopts optical devices, and measures ultrasonic/sonic/infrasonic waves, etc. It can solve the problems of large vibration signal extraction and detection, errors, etc., and achieve less measurement interference factors and high measurement sensitivity Effect

Inactive Publication Date: 2018-11-13
SHANDONG UNIV OF TECH
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For some vibration signal extraction methods, when the signal is extracted, it is affected by some external factors such as noise or other vibrations, so that there are large errors in the extraction and detection of vibration signals

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
  • Vibration displacement measurement device on basis of optical interference
  • Vibration displacement measurement device on basis of optical interference

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Below in conjunction with accompanying drawing, make further detailed description:

[0014] The main structure of this embodiment includes two parts: the electrostatic excitation vibration device of the beam and the photodetector signal detection device. The electrostatic excitation vibration device of the beam is characterized in that: the electrostatic excitation vibration device of the beam is composed of an AC signal source 8, an electrostatic drive plate 7, a bottom plate 10, a cantilever beam 1, a side plate 5, a sound wave 4, a switch 9 and wire composition. The electrostatic drive plate 7 is fixed on the bottom plate 10, located directly above the cantilever beam 1, and its length is slightly shorter than the cantilever beam 1; the cantilever beam 1 is fixed on the side plate 5, the left end is fixed and the right end is free, and the upper surface of the cantilever beam 1 A layer of gold metal layer 6 is plated, the left end of the gold metal layer 6 is connec...

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 discloses a vibration signal measurement device. The vibration signal measurement device is characterized in that a beam electrostatic excited vibration device comprises an alternating-current signal source, an electrostatic driving pole plate, a bottom plate, a cantilever beam, a side plate, acoustic waves, a switch and wires; a signal detection device with a photoelectric detectorcomprises a support circular ring block, diffraction gratings, diffracted light, incident light, diffraction order, a substrate, the photoelectric detector and a conductive thin film. The vibration signal measurement device has the advantages that the cantilever beam can be forced to vibrate under excitation effects of alternating-current signals; the acoustic waves can be generated during vibration, acoustic wave thin films can vibrate, interference effects can be realized by the diffracted light and reflected light, and accordingly beam vibration can be detected.

Description

technical field [0001] The patent of the present invention relates to a vibration signal measuring device, in particular to a vibration signal extraction device, which belongs to the field of vibration signal detection. Background technique [0002] Vibration signal extraction is widely used in mechanical vibration research, automotive systems, sensors and other fields. In the extraction of vibration signals, how to eliminate the influence of external factors on the signal is the main factor that determines the accuracy of the signal. For some vibration signal extraction methods, some external factors such as noise or other vibrations are affected when the signal is extracted, so that there are large errors in the extraction and detection of the vibration signal. How to reduce the influence of external factors has become one of the problems restricting the improvement of the accuracy of vibration signal extraction. Optical detection is a non-contact measurement method, whi...

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): G01H9/00G01B11/02
CPCG01B11/02G01H9/00
Inventor 刘灿昌刘文晓李磊万磊孔维旭周长城
Owner SHANDONG UNIV OF TECH
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