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

Polyvinylidene fluoride (PVDF) ultrasonic transmitter with double-cylinder structure

A dual-cylinder, ultrasonic technology, applied in the direction of fluid using vibration, can solve the problems of large size, complex structure and high cost of transmitting equipment, and achieve the effect of wide bandwidth, good coupling and reducing complexity.

Pending Publication Date: 2019-06-07
JILIN UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a PVDF ultrasonic transmitter with a double cylinder structure to solve the problems of large size, high cost and complex structure of the existing transmitting equipment

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
  • Polyvinylidene fluoride (PVDF) ultrasonic transmitter with double-cylinder structure
  • Polyvinylidene fluoride (PVDF) ultrasonic transmitter with double-cylinder structure
  • Polyvinylidene fluoride (PVDF) ultrasonic transmitter with double-cylinder structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Two strip-shaped piezoelectric films 1 are placed in two grooves 201 vertically intersecting on the plastic spherical base 2, and are fixedly connected to the plastic spherical base 2 by gluing to form a double cylinder shape;

[0020] The main body 102 of each strip-shaped piezoelectric film 1 is made of polyvinylidene fluoride PVDF material, and the first electrode 101 and the second electrode 103 are respectively covered on both sides of the main body 102. The first electrode lead 104 is connected to one end of the first electrode 101, and the second lead electrode 105 is connected with the other end of electrode two 103;

[0021] The first electrode 101 and the second electrode 103 are plated with aluminum or silver;

[0022] The spherical body 202 of the plastic spherical base 2 has two vertically intersecting grooves 201 , and a body seat 203 under the body 202 .

[0023] When two strip-shaped PVDF piezoelectric films are loaded with alternating voltage, piezoele...

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 polyvinylidene fluoride (PVDF) ultrasonic transmitter with a double-cylinder structure, and belongs to the field of ultrasonic transmitters. Two strip-shaped piezoelectric films are placed in two grooves perpendicularly intersecting on a plastic spherical substrate, and are fixedly connected with the plastic spherical substrate by gluing to form a double-cylinder shape.The PVDF ultrasonic transmitter with the double-cylinder structure has the advantages that the structure is novel, the two identical strip-shaped PVDF piezoelectric films are enclosed in the two vertically intersecting grooves of the spherical substrate, fixing is carried out by the gluing, the PVDF ultrasonic transmitter with the double-cylinder structure is constituted, a spherical structure isformed, omnidirectional transmitting of ultrasonic waves is realized, the complexity of ultrasonic transmitting equipment is reduced, the cost is reduced, the miniaturization of the ultrasonic transmitting equipment is realized, the bandwidth of the transmitted ultrasonic waves is wide, and omnidirectional coverage of the beam angle is realized; and moreover, the surface area is relatively large,coupling with air is good, the wave impedance is low, and the PVDF ultrasonic transmitter with the double-cylinder structure is suitable for application fields such as aerial three-dimensional ultrasonic positioning, ranging, and robot obstacle avoidance.

Description

technical field [0001] The invention relates to the field of ultrasonic transmitters, in particular to an ultrasonic transmitter made of PVDF piezoelectric film and applied in air. Background technique [0002] Advances in materials science have enabled low-cost production and fabrication of sensors. Polyvinylidene fluoride (PVDF) is an electroactive polymer that has piezoelectric properties at room temperature and is used to sense temperature, pressure, velocity, and acceleration, among others. It is a ferroelectric polymer with unique properties, widely used in the fields of medicine and bioimaging. At the same time, PVDF has good acoustic impedance matching with air, and is suitable for generating ultrasonic waves in air. [0003] PVDF ultrasonic transmitter is a device that utilizes the vibration of PVDF piezoelectric film driven by alternating current to radiate sound. Its common structure is composed of PVDF piezoelectric film and external structure made by imposing ...

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): B06B1/06
Inventor 陈建赵静仪孙晓颖林琳燕学智王庆龙刘国红
Owner JILIN 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