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

Giant magnetostrictive rare-earth transducer for parametric loudspeaker

A technology of giant magnetostrictive and parametric speakers, which is applied in the direction of magnetostrictive sensors, sensors, sensor types, etc., and can solve the problem of low sound power of acoustic parametric array speakers

Inactive Publication Date: 2013-04-03
CIVIL AVIATION FLIGHT UNIV OF CHINA
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a parametric loudspeaker with giant magnetostrictive rare earth transducer, to solve the problem that the output sound power of the acoustic parametric array loudspeaker is small

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
  • Giant magnetostrictive rare-earth transducer for parametric loudspeaker
  • Giant magnetostrictive rare-earth transducer for parametric loudspeaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] figure 1 It shows the realization structure of parametric loudspeaker with giant magnetostrictive rare earth transducer. The transducer consists of a bottom plate 1, a giant magnetostrictive rare earth rod 2, a coil 3, a telescopic rod cavity 4, a vibrating piece fixing screw 5, a vibrating piece 6, an elastic ring fixing screw 7, a fixed elastic ring 8, and a bottom plate fixing screw 9 composition.

[0018] The bottom plate 1 is fixed on the telescopic rod cavity 4 by the bottom plate fixing screws 9 . The coil 3 is wound on the giant magnetostrictive rare earth rod 2, and leads out the coil lead wire through the small hole 10 in the cavity 4 of the telescopic rod and connects it to the power amplifier. The fixed elastic ring 8 fixes the giant magnetostrictive rare earth rod 2 on the telescopic rod cavity 4 through the elastic ring fixing screw 7 . The fixed elastic ring 8 is made of a thin and highly elastic material to ensure that the vibration resistance of the ...

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

A giant magnetostrictive rare-earth transducer for a parametric loudspeaker comprises a bottom board, a giant magnetostrictive rare-earth rod, a coil, a telescopic rod cavity, vibrating plate fixing screws, a vibrating plate, elastic ring fixing screws, a fixed elastic ring and bottom board fixing screws. The transducer for the parametric loudspeaker can generate high sound power by the aid of the advantages of high mechanical energy to electric energy conversion rate, high energy density, high response speed, fine reliability and simple driving mode of giant magnetostrictive rare-earth materials at room temperature, and has significance for solving the problem of low output sound power of a parametric array loudspeaker.

Description

technical field [0001] A transducer, in particular to a giant magnetostrictive rare earth transducer for a parametric loudspeaker. Background technique [0002] The parametric loudspeaker is a new type of loudspeaker that has appeared in recent years, which can realize the high directivity transmission of the audio signal. At present, the transducers used in parametric speakers generally use piezoelectric ceramic transducers or PVDF film transducers. The piezoelectric ceramics used in piezoelectric ceramic transducers are relatively brittle, so it is difficult to obtain a large sound power through such transducers, and the transducers produced in the low frequency band are large in size; such transducers At the same time, there are problems of narrow bandwidth and large aftershock. Although the PVDF film transducer can be made into a transducer of any shape and has a wide bandwidth, it also has the problem of low acoustic power. [0003] Giant magnetostrictive rare earth ...

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): H04R15/00
Inventor 张德银陈敏彭卫东包勇罗英
Owner CIVIL AVIATION FLIGHT UNIV OF CHINA
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