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

Amplification structure of double-lens focusing ultrasonic transducer

A technology of focusing ultrasound and transducers, applied in the field of ultrasound, can solve problems such as operator inconvenience, achieve the effects of prolonging service life, improving sound radiation efficiency, and reducing excessive center deformation

Pending Publication Date: 2022-02-01
HAIYING ELECTRONIC MEDICAL SYST CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The acoustic lens focusing ultrasonic transducer is composed of a circular planar piezoelectric ceramic sheet and a concave spherical acoustic lens made of high-sonic material. The concave spherical surface focusing ultrasonic transducer directly uses a concave spherical piezoelectric ceramic sheet, and the front end of the radiation surface is concave. Spherical surface, coupled with a plane needs to be filled with a propagation medium (such as water, couplant), which brings inconvenience to the operator

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
  • Amplification structure of double-lens focusing ultrasonic transducer
  • Amplification structure of double-lens focusing ultrasonic transducer
  • Amplification structure of double-lens focusing ultrasonic transducer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] See figure 1 and figure 2 , the present invention provides a dual-lens focusing ultrasonic transducer amplification structure, which has a low-sonic material acoustic lens 1, a high-sonic material acoustic lens 2, a piezoelectric ceramic sheet 3, and the piezoelectric ceramic sheet 3 is connected to the piezoelectric ceramic sheet 3 The low-sonic material acoustic lens 1 is connected to the high-sonic material acoustic lens 2, and the center of the sound axis of the low-sonic material acoustic lens 1 is provided with a second-order ladder structure 4 connected to the high-sonic material acoustic lens 2, and the second-order ladder structure 4 has Primary diameter RB, depth TB, secondary diameter RA, height TA. That is, the central hole of the concave spherical surface of the high-sonic material acoustic lens 2 provides an exhaust passage for the injection molding of the low-sonic material at the same time, and the low-sonic material is injected into the central hole o...

Embodiment 2

[0025] See figure 2 , the low sound velocity material acoustic lens 1 is a single convex spherical acoustic lens. According to the working frequency and radiation area of ​​the focusing transducer, select the appropriate values ​​of TB and RB in the second-order structure to improve the sound output efficiency. According to the working frequency and radiation area of ​​the focusing transducer, select the appropriate values ​​of TA, RA, TB and RB in the second-order structure to improve the sound output efficiency.

[0026] Specifically, the height TA=4.3mm, the second-order diameter RA=2.0mm, the depth TB=2.3mm, and the first-order diameter RB=7.0mm. The diameter of the radiating surface of the 800KHz focusing transducer is 50mm, and the focus position range is 50±10mm. It adopts a double-lens focusing mode, and the radius of curvature of the concave spherical surface is 100mm. The maximum sound pressure level of the sound axis is increased by at least 10dB.

Embodiment (3

[0028] See image 3 , the low sound velocity material acoustic lens 1 is a biconvex spherical acoustic lens. According to the working frequency and radiation area of ​​the focused transducer, select the appropriate values ​​of TB and RB in the first-order structure to improve the sound output efficiency.

[0029] In the first-step ladder structure, the depth TB is a through hole, and the first-step diameter RB=2.0mm. The diameter of the 800KHz focusing transducer's radiation surface is 50mm, and the focus position range is 50±10mm. It adopts a double-lens focusing mode, and the radius of curvature of the concave spherical surface and the convex spherical surface is 100mm. The maximum sound pressure level of the sound axis is increased by at least 6dB.

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 an amplification structure of a double-lens focusing ultrasonic transducer. The amplification structure is provided with a low-sound-velocity material sound lens, a high-sound-velocity material sound lens and a piezoelectric ceramic piece, wherein the piezoelectric ceramic piece is connected to the piezoelectric ceramic piece, the low-sound-velocity material sound lens is connected to the high-sound-velocity material sound lens. The sound axis center of the low-sound-velocity material sound lens is provided with a second-order stepped structure communicated with the high-sound-velocity material sound lens, and the second-order stepped structure has a first-order diameter, a depth, a second-order diameter and a height. A multi-step amplification structure is adopted at the central position of a sound axis of the double-lens focusing ultrasonic transducer. The multi-step structure changes the local vibration mode of the concave spherical surface of the high-sound-velocity material, releases central stress meta, reduces the problems of overhigh central deformation, large internal loss of the material and the like, and is combined with the filled low-sound-velocity material to effectively improve the sound radiation efficiency and prolong the service life of the transducer.

Description

technical field [0001] The invention relates to the field of ultrasonic technology, in particular to a dual-lens focusing ultrasonic transducer amplification structure. Background technique [0002] Focused ultrasound transducers have a variety of implementation structures: concave spherical surface focusing, acoustic lens focusing, multi-element circular plane spherical focusing array, multi-element spherical surface spherical focusing array and phased array, among which small-sized focused ultrasonic transducers The device usually chooses the simple structure of concave spherical surface focusing and acoustic lens focusing. The acoustic lens focusing ultrasonic transducer is composed of a circular planar piezoelectric ceramic sheet and a concave spherical acoustic lens made of high-sonic material. The concave spherical surface focusing ultrasonic transducer directly uses a concave spherical piezoelectric ceramic sheet, and the front end of the radiation surface is concave....

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): B06B1/06B06B3/02B06B3/04
CPCB06B1/0644B06B3/04B06B3/02
Inventor 耿晓鸣胡春王正东
Owner HAIYING ELECTRONIC MEDICAL SYST CO LTD
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