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

Comprehensive test instrument for performance of accoustic material

A comprehensive tester and acoustic material technology, applied in scientific instruments, analytical materials, material analysis using sonic/ultrasonic/infrasonic waves, etc., can solve the problems of low test efficiency, complex data processing process, accuracy dependence, etc., to improve the market. Competitiveness and enterprise benefits, broad application prospects, and the effect of fast debugging

Active Publication Date: 2006-12-06
王岩松
View PDF0 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of the theory of acoustic material performance testing, some international scholars have successively proposed a series of methods such as direct method, dual-microphone method, transfer matrix method, standing wave separation method, double-resistance method, and dual-carrier method. Each has its own strengths, but its accuracy depends on some specific assumptions, and it is difficult to directly apply it to the test instrument. In-depth research on the feasibility of this method
So far, there are only a few such test instruments in the world, but most of them adopt a three-microphone standing wave separation dynamic test structure similar to B&K's standing wave acoustic resistance tube (the split pipes move relatively, and one of the microphones is dedicated It is used for system calibration), which has the disadvantages of complex structure, large volume, narrow test range, high price, etc., and it is difficult to be widely promoted.
For a long time, due to the lack of direct testing methods and unified testing standards, the testing of material acoustic resistance characteristics has mostly been done indirectly by using some alternative equipment, resulting in low testing efficiency, large errors, complicated data processing, and difficult selection.

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
  • Comprehensive test instrument for performance of accoustic material
  • Comprehensive test instrument for performance of accoustic material
  • Comprehensive test instrument for performance of accoustic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Such as Figure 1 ~ Figure 4 As shown, the acoustic material performance comprehensive tester is composed of a computer 3 for processing collected data, a double-microphone standing wave tube 1 , a four-microphone standing wave tube 2 , and a four-microphone group 5 . Described double-microphone standing wave tube 1 is made up of the front standing wave tube 106 and the rear standing wave tube 104 connected by thread, the front end cover 109 installed on the front standing wave tube 106, and the front end cover 109 that is located at the front standing wave tube 106 front. Speaker 107 and BNC interface 108, front pad 110 and ring pad 111 placed between front end cover 109 and speaker 107, two microphone clamps 105 installed at the rear of front standing wave tube 106, mounted on rear standing wave tube The piston rod support cover 102 at the 106 rear end, the piston rod 116 passing through the piston rod support cover 102 and located in the rear pipe 104, the piston 114...

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 acoustical material performance synthesis tester. It includes computer, double-microphone standing wave tube, four-microphone standing wave tube, and four-microphone sets. The double-microphone standing wave tube is made up of front and back standing wave tubes, loudspeaker, two microphone clams, piston rod lid support, piston rod, piston, and handle nut. The four-microphone standing wave tube is made up of front and back standing wave tubes, front and back end cover, loudspeaker, and microphone clam. The audio frequency output of the computer is connected with the loudspeaker. And the four-microphone sets are respectively connected with the signal input of the computer.

Description

technical field [0001] The invention particularly relates to an acoustic material performance comprehensive tester. Background technique [0002] With the development of society, the problem of noise pollution has become more and more prominent. In order to protect the environment and strengthen the control of noise pollution, acoustic materials have been widely used. According to their characteristics, these acoustic materials can be roughly divided into: sound-absorbing materials, sound-insulating materials and vibration-isolating materials. Vibration-isolating materials achieve sound insulation by reducing vibration. The most common acoustic materials are glass wool, foam, felt, glass, and rubber. wait. Obviously, vigorously promoting and using high-performance acoustic materials is of great significance to improving the noise environment and improving the quality of human life, and the development and production of high-performance acoustic materials is firstly based on...

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): G01N29/00
Inventor 王岩松
Owner 王岩松
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