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Method and device for utilizing electric signals to test performance of breather paper

A technology of air permeable paper and electrical signal, which is applied in the analysis of solids using sonic/ultrasonic/infrasonic waves, which can solve the problems of difficulty in ensuring the constant pressure stability of the test environment, high price of the air-permeable paper tester, and high test error, achieving low cost. , The effect of small impact and accurate test data

Pending Publication Date: 2019-01-25
GUANGDONG TAKSTAR ELECTRONIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When using a breathable paper tester for testing, it is difficult to ensure the constant pressure stability of the test environment. Pressure fluctuations have a great impact on the test results, resulting in a high degree of test error. At the same time, the price of the breathable paper tester is expensive. For enterprises will result in a certain cost

Method used

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  • Method and device for utilizing electric signals to test performance of breather paper
  • Method and device for utilizing electric signals to test performance of breather paper
  • Method and device for utilizing electric signals to test performance of breather paper

Examples

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Embodiment 1

[0026] Please refer to figure 1 , the present embodiment provides a method for testing the performance of air-permeable paper using electrical signals, including S1, recording the sound signal transmission delay time generated by the distance from the sounder to the receiver, and using this time as the reference time T1; S2, at the sounder Place air-permeable paper between the receiver and the receiver, record the sound signal transmission delay time generated by the distance from the sounder to the receiver, and use this time as the delay time T2; S3, judge by calculating the delay difference between the delay time T2 and the reference time T1 Performance of breathable paper.

[0027] In the specific implementation process of this embodiment, first record the sound signal transmission delay time generated by the distance from the sound generator to the receiver without air-permeable paper, and use this time as the reference time T1, and then test and record it in the case of ...

Embodiment 2

[0032] Please refer to image 3 , this embodiment provides a device for testing the performance of air-permeable paper using electrical signals, including a sounder, a receiver, and a two-way oscilloscope electrically connected to the receiver. Placed oppositely in the environment of external sound interference, the sounder transmits the sound signal to the receiver through space, and the receiver converts the sound signal into an electrical signal and then enters the dual-channel oscilloscope for analysis to obtain the reference time T1; then between the sounder and the receiver Place the air-permeable paper to be tested. Similarly, replay the same sound signal as above. The sounder transmits the sound signal through the space, passes through the air-permeable paper, and then goes to the receiver. The receiver converts the sound signal into an electrical signal and enters the two-way oscilloscope for further analysis Analysis, the time obtained at this time is the delay time ...

Embodiment 3

[0036] Please refer to Figure 4 , this embodiment is similar to embodiment two, the difference is that the number of receivers in this embodiment is two, the two receivers are placed on the opposite side of the sounder, and the distance between the two receivers and the sounder is equal, Make sure that the magnitude and phase of the sound signal received by the two receivers are consistent to improve the accuracy of the test. The two receivers are respectively connected to channel 1 and channel 2 of the dual-channel oscilloscope and compare their delay differences. In one receiver Place air-permeable paper between the sound generator and set the receiver as the receiver under test. Correspondingly, the other receiver is the reference receiver. The relative sound delay of the two receivers can be seen in the dual-channel oscilloscope. After analysis and calculation The sound delay difference of the two receivers can be obtained, so that the air permeability of the air-permeabl...

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Abstract

The invention relates to the technical field of breather paper performance testing and particularly discloses a method and device for utilizing electric signals to test the performance of breather paper. The method comprises the steps that S1, the transmission delaying time of sound signals produced between a sounder and a receiver is recorded and serves as standard time T1; S2, breather paper isarranged between the sounder and the receiver, the transmission delaying time of the sound signals produced between the sounder and the receiver is recorded and serves as delaying time T2; S3, by calculating the delaying difference of the delaying time T2 and the standard time T1, and the performance of the breather paper is judged. The testing steps are simple, the cost is low, the influence of outside environmental factors is small, and testing data is accurate.

Description

technical field [0001] The invention relates to the technical field of performance testing of air-permeable paper, in particular to a method and a device for testing the performance of air-permeable paper by using electric signals. Background technique [0002] Air-permeable paper is a common material widely used in earphones and microphones to adjust the sound quality. At present, when testing air-permeable paper on the market, most of them use air-permeable paper testers. The principle of using air-permeable paper testers is: In a high pressure environment, place the air-permeable paper in the middle, place a pressure sensor on one side to detect the intake pressure, and place the same pressure sensor on the other side to detect the outlet pressure after passing through the air-permeable paper, and get it by calculating the pressure difference Density and stability of breathable paper. [0003] When using a breathable paper tester for testing, it is difficult to ensure th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N29/12
CPCG01N29/04G01N29/12
Inventor 杨志豪欧阳胜杨坤
Owner GUANGDONG TAKSTAR ELECTRONIC CO LTD
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