CN208999360U - A kind of device using electric signal testing air permeable paper performance - Google Patents
A kind of device using electric signal testing air permeable paper performance Download PDFInfo
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- CN208999360U CN208999360U CN201821792758.3U CN201821792758U CN208999360U CN 208999360 U CN208999360 U CN 208999360U CN 201821792758 U CN201821792758 U CN 201821792758U CN 208999360 U CN208999360 U CN 208999360U
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- permeable paper
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Abstract
The utility model relates to air-permeable paper technical field of performance test, specifically disclose a kind of device using electric signal testing air permeable paper performance, including acoustical generator, receiver, and the bilateral oscillograph being electrically connected with receiver, device further includes signal generator, the amplifier being connect with signal generator, the amplifier is electrically connected acoustical generator, the overall structure of the utility model is simple, it is easy to operate, it is at low cost, using electric signal come the performance of testing air permeable paper, analysis, which is calculated, by bilateral oscillograph obtains delay inequality, to which judgement obtains the gas permeability of air-permeable paper, it is influenced by outside environmental elements small, test data is accurate.
Description
Technical field
The utility model relates to air-permeable paper technical field of performance test more particularly to a kind of utilization electric signal testing air permeable paper
The device of performance.
Background technique
Air-permeable paper is widely used for earphone, on microphone core for adjusting the common used material of sound quality, currently on the market
In testing air permeable paper, air-permeable paper tester is largely used, the use principle of air-permeable paper tester is: in constant pressure environment
Under, air-permeable paper is placed on middle position, placement force sensor detects admission pressure in side, while placing in the other side
Same pressure sensor detection obtains the close of air-permeable paper by the calculating of pressure difference by the outlet pressure after air-permeable paper
Degree and stability.
When being tested using air-permeable paper tester, it is difficult to guarantee the constant-pressure stable of test environment, the fluctuation of pressure
Influence to test result is very big, it is high to lead to test error degree, while air-permeable paper tester is expensive, and enterprise is come
It says and will cause certain cost input.
Utility model content
In view of the above technical problems, the utility model simple, easy to operate, at low cost, Yi Jishou that provides a kind of structure
Outside environmental elements influence is small, and test data accurately utilizes the device of electric signal testing air permeable paper performance.
In order to solve the above-mentioned technical problem, concrete scheme provided by the utility model is as follows: a kind of to be tested using electric signal
The device of air-permeable paper performance, including acoustical generator, receiver and the bilateral oscillograph being electrically connected with receiver.
Preferably, described device further include signal generator, the amplifier that is connect with signal generator, the amplifier electricity
Property connection acoustical generator.
Preferably, the acoustical generator be loudspeaker, artificial mouth or buzzer, acoustical generator selection can sounding device, and
Loudspeaker, artificial mouth or buzzer are all the materials for being easier to obtain, and are suitable for test and use.
Preferably, the receiver is moving-coil sound head, electret sound head or silicon miaow, and there is acoustic-electric to convert function for receiver selection
The device of energy, moving-coil sound head, electret sound head or silicon miaow are all the materials for being easier to obtain, and are suitable for test and use.
Preferably, the quantity of the receiver is two, can test to have obtained air-permeable paper simultaneously and not have air-permeable paper feelings
Transmission of sound signals delay time under condition saves the testing time.
Compared with prior art, the utility model has the beneficial effects that: the overall structure of the utility model is simple, operation
It is convenient, it is at low cost, using electric signal come the performance of testing air permeable paper, analysis is calculated by bilateral oscillograph and obtains delay inequality, from
And judge to obtain the gas permeability of air-permeable paper, influenced by outside environmental elements small, test data is accurate.
Detailed description of the invention
Fig. 1 is the overall structure figure of the utility model embodiment one；
Fig. 2 is the overall structure block diagram of the utility model embodiment two.
Wherein, 1 is acoustical generator；2 be receiver；3 be bilateral oscillograph；4 be signal generator；5 be amplifier.
Specific embodiment
It is right below in conjunction with the attached drawing of the utility model embodiment in order to which the technical solution of the utility model is described in detail
The technical solution of the utility model embodiment carries out clear, complete description.Obviously, described embodiment is the utility model
A part of the embodiment, instead of all the embodiments.Based on described the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained under the premise of being not necessarily to creative work, belongs to the model of the utility model protection
It encloses.
Embodiment one:
Fig. 1 is please referred to, a kind of device using electric signal testing air permeable paper performance, including sounding are present embodiments provided
Device, receiver and the bilateral oscillograph being electrically connected with receiver, in the specific implementation process, by acoustical generator and receiver
Be placed in oppose in the environment of not interfered by external sound and place, acoustical generator by voice signal by space propagation to receiver, by
Voice signal is converted into after electric signal by words device to be entered bilateral oscillograph and analyzes, and fiducial time T1 is obtained；Then exist
Air-permeable paper to be tested is placed between acoustical generator and receiver, similarly, resets voice signal same as described above, and acoustical generator is by sound
Sound signal arrives receiver by space propagation again after air-permeable paper, and voice signal is converted into electric signal and entered by receiver
It is analyzed to bilateral oscillograph, the time obtained at this time is delay time T2, passes through computation delay time T2 and fiducial time
The delay inequality of T1 can determine whether to obtain the permeability of air-permeable paper.
For the flexibility and operability for improving operation, which further includes signal generator, connect with signal generator
Amplifier, amplifier be electrically connected acoustical generator, before being tested, can pass through signal generator adjust required for sound audio
Rate and amplitude meet different testing requirements.
Wherein, acoustical generator can select loudspeaker, artificial mouth or buzzer, using buzzer, buzzing in the present embodiment
Device need operating current it is small, power is also small, and it is at low cost be easy to get, be highly suitable for test use；Receiver can select
The device with acoustic-electric conversion function is selected, such as moving-coil sound head, electret sound head or silicon miaow, what is selected in the present embodiment is silicon miaow,
It signal is made a sound by buzzer is transferred to silicon miaow voice signal is converted into electric signal and analyze.
Embodiment two:
Referring to figure 2., the present embodiment is similar to embodiment one, the difference is that, the number of the receiver in the present embodiment
Amount is two, two receivers is placed in the opposite of acoustical generator, two receivers are equal with the distance between acoustical generator, really
The size for protecting the voice signal that two receivers receive acoustical generator is consistent with phase, improves the accuracy of test, and two called
Device is respectively connected to the channel of bilateral oscillograph 1 and channel 2 and the delay inequality for comparing them, a receiver and acoustical generator it
Between place air-permeable paper, which is set as tested receiver, corresponding, another receiver is reference receiver,
It can be seen that two receivers are with respect to the delay of sound in bilateral oscillograph, it is calculated analytically and two receivers can be obtained
Sound delay is poor, so as to judge to obtain the gas permeability of air-permeable paper.
The embodiments of the present invention is explained in detail above in conjunction with attached drawing, but the utility model is not limited to
Above embodiment can also not depart from the utility model within the knowledge of a person skilled in the art
Various changes can be made under the premise of objective.
Claims (5)
1. a kind of device using electric signal testing air permeable paper performance, it is characterised in that: including acoustical generator (1), receiver (2),
And the bilateral oscillograph (3) being electrically connected with receiver (2).
2. the apparatus according to claim 1, it is characterised in that: described device further includes that signal generator (4) and signal are sent out
The amplifier (5) of raw device (4) connection, the amplifier (5) are electrically connected acoustical generator (1).
3. the apparatus according to claim 1, it is characterised in that: the acoustical generator (1) is loudspeaker, artificial mouth or buzzer.
4. the apparatus according to claim 1, it is characterised in that: the receiver (2) be moving-coil sound head, electret sound head or
Silicon miaow.
5. the apparatus according to claim 1, it is characterised in that: the quantity of the receiver (2) is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821792758.3U CN208999360U (en) | 2018-11-01 | 2018-11-01 | A kind of device using electric signal testing air permeable paper performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821792758.3U CN208999360U (en) | 2018-11-01 | 2018-11-01 | A kind of device using electric signal testing air permeable paper performance |
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| CN208999360U true CN208999360U (en) | 2019-06-18 |
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| CN201821792758.3U Active CN208999360U (en) | 2018-11-01 | 2018-11-01 | A kind of device using electric signal testing air permeable paper performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109270167A (en) * | 2018-11-01 | 2019-01-25 | 广东得胜电子有限公司 | A kind of method and device using electric signal testing air permeable paper performance |
-
2018
- 2018-11-01 CN CN201821792758.3U patent/CN208999360U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109270167A (en) * | 2018-11-01 | 2019-01-25 | 广东得胜电子有限公司 | A kind of method and device using electric signal testing air permeable paper performance |
| CN109270167B (en) * | 2018-11-01 | 2024-04-16 | 广东得胜电子有限公司 | Method and device for testing performance of breathable paper by using electric signals |
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