Piezoelectric patch type detectoscope for deepwater soundwave detection

A technology of sound wave detection and piezoelectric sheet, which is applied in the direction of using electric devices, using electromagnetic means, and measuring ultrasonic/sonic/infrasonic waves. High stability, simple design effect

Inactive Publication Date: 2011-01-19
ZHEJIANG UNIV
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, the sound waves will also gradually weaken during the transmission process, making the signal weaker
At the same time, since water is an excellent transmission medium for sound, all kinds of sound waves can be transmitted for hundreds of thousands of kilometers, making it difficult for people to distinguish the sound waves carrying data from the usual background noise
At present, there is no perfect acoustic wave detection instrument in underwater communication, which can work normally, stably, and with

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
  • Piezoelectric patch type detectoscope for deepwater soundwave detection
  • Piezoelectric patch type detectoscope for deepwater soundwave detection
  • Piezoelectric patch type detectoscope for deepwater soundwave detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention will be further described below in conjunction with drawings and embodiments.

[0016] Sound waves will be reflected and transmitted in multi-layer media, especially when sound waves are vertically incident on multi-layer planes, we can use the wave equation and Euler equation to write the sound pressure p(x) and vibration velocity in each layer of media v(x), such as figure 1 Shown:

[0017] Among them, the third layer of medium is the same as the first layer of medium, that is, it has the same density and the same speed of sound. The thickness of the medium in the middle layer is 1, and the sound wave is incident from the first layer on the left. p 1i (x) represents the incident wave of the first layer, p 1r (x) represents the reflected wave of the first layer, ρ 1 and c 1 Respectively represent the density and sound velocity of the first layer of medium, p 2i (x) represents the incident wave of the second layer, p 2r (x) represents the refl

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 piezoelectric patch type detectoscope for deepwater soundwave detection. The detectoscope is characterized in that the length of an air cavity of an anti-pressure medium soundwave resonant cavity is half the soundwave operation wavelength lambda; a piezoelectric electric transducer is installed at one end of the anti-pressure medium soundwave resonant cavity; and a piezoelectric ceramic patch of the piezoelectric electric transducer attaches to the inner end face of the air cavity in the anti-pressure medium soundwave resonant cavity. The detectoscope can still realize detection of the soundwave signals even under high pressure in deepwater and, with such a simple structure, can not only maintain the high detection sensitivity of the traditional piezoelectric electric transducers but also overcome the defect that the traditional piezoelectric electric transducers can not detect the soundwaves in water. The equipment is simple in design, has small volume and low cost and is convenient to use. The detectoscope can be widely applied to deepwater pipelines, oil wells, deep sea and other soundwave detection systems under high pressure.

Description

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

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
Owner ZHEJIANG UNIV
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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap