CN113776747B - Air tightness testing method, device and equipment - Google Patents
Air tightness testing method, device and equipment Download PDFInfo
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- CN113776747B CN113776747B CN202111015534.8A CN202111015534A CN113776747B CN 113776747 B CN113776747 B CN 113776747B CN 202111015534 A CN202111015534 A CN 202111015534A CN 113776747 B CN113776747 B CN 113776747B
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- 230000005236 sound signal Effects 0.000 claims abstract description 113
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 5
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- 238000010586 diagram Methods 0.000 description 16
- 238000003860 storage Methods 0.000 description 15
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- 238000004590 computer program Methods 0.000 description 5
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
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- Examining Or Testing Airtightness (AREA)
Abstract
The embodiment of the disclosure discloses a method, a device and equipment for testing air tightness. The method is applied to air tightness testing equipment, wherein a microphone and a loudspeaker are arranged in the air tightness testing equipment, the air tightness testing equipment is connected with a tested product, and the method comprises the following steps: controlling the loudspeaker to play audio; collecting an audio signal through the microphone; and obtaining an air tightness test result of the tested product according to the collected audio signal.
Description
Technical Field
The disclosure relates to the technical field of detection, and more particularly, to a method, a device and equipment for testing air tightness.
Background
The current schemes for measuring the air tightness of products include a water sealing method, a liquid difference method, a thermal expansion and cooling method, an atmospheric method, an air extraction method and the like, wherein the water sealing method is most commonly used, namely, whether the air tightness is good or not through water as a means for directly or indirectly representing the air tightness.
In addition, in the production line of products, liquids such as water oil and the like are isolated for safe production, so that the scheme cannot be realized, and after the products are subjected to a soaking test, the products can be scrapped and cannot be used. Therefore, it is necessary to provide a practical air tightness test scheme.
Disclosure of Invention
It is an object of embodiments of the present disclosure to provide a new solution regarding tightness testing.
According to a first aspect of the present disclosure, there is provided an air tightness testing method applied to an air tightness testing apparatus in which a microphone and a speaker are provided, the air tightness testing apparatus being connected with a product to be tested, the method comprising:
controlling the loudspeaker to play audio;
collecting an audio signal through the microphone;
and obtaining an air tightness test result of the tested product according to the collected audio signal.
Optionally, the controlling the speaker to play audio includes:
and under the condition that different pressures are applied to the tested product, controlling the loudspeaker to play audio.
Optionally, the capturing the audio signal by the microphone includes:
Collecting a first audio signal at the first time through the microphone;
Collecting a second audio signal at the second moment through the microphone; and
Collecting a third audio signal at the third moment by the microphone;
Wherein the first moment is the moment when the first pressure is applied to the tested product; the second moment is the moment when the second pressure is applied to the tested product; the third moment is the moment when the third pressure is applied to the tested product.
Optionally, the obtaining the air tightness test result of the tested product according to the collected audio signal includes:
Comparing the third audio signal with the first audio signal and the second audio signal, respectively;
and obtaining the air tightness test result of the tested product according to the comparison result.
Optionally, the obtaining the air tightness test result of the tested product according to the collected audio signal includes:
comparing the collected audio signal with a standard audio signal, and obtaining an air tightness test result of the tested product according to the comparison result.
According to a second aspect of the present disclosure, there is provided an air tightness testing apparatus applied to an air tightness testing device in which a microphone and a speaker are provided, the air tightness testing device being connected with a product to be tested, the apparatus comprising:
The control module is used for controlling the loudspeaker to play audio;
The acquisition module is used for acquiring an audio signal through the microphone;
And the processing module is used for obtaining the air tightness test result of the tested product according to the collected audio signal.
Optionally, the control module is specifically configured to:
and under the condition that different pressures are applied to the tested product, controlling the loudspeaker to play audio.
Optionally, the acquisition module is specifically configured to:
Collecting a first audio signal at the first time through the microphone; collecting a second audio signal at the second moment through the microphone; and, at the third moment, acquiring a third audio signal by the microphone;
Wherein the first moment is the moment when the first pressure is applied to the tested product; the second moment is the moment when the second pressure is applied to the tested product; the third moment is the moment when the third pressure is applied to the tested product.
Optionally, the processing module is specifically configured to:
Comparing the third audio signal with the first audio signal and the second audio signal, respectively;
and obtaining the air tightness test result of the tested product according to the comparison result.
Optionally, the processing module is specifically configured to:
comparing the collected audio signal with a standard audio signal, and obtaining an air tightness test result of the tested product according to the comparison result.
According to a third aspect of the present disclosure, there is provided an air tightness testing apparatus, the apparatus comprising: microphone, speaker, hollow tube, seal; the microphone and the loudspeaker are arranged at the first end of the hollow tube; a sealing element is arranged on the hollow tube;
Wherein the seal is configured to seal the connection site when the first end of the hollow tube is connected to the product under test.
Optionally, the apparatus further comprises a pressurizing apparatus; the pressurizing device is connected to the second end of the hollow tube.
According to the embodiment of the disclosure, the audio is played by controlling the loudspeaker; collecting an audio signal through the microphone; and obtaining an air tightness test result of the tested product according to the collected audio signal. Therefore, the air tightness of the tested product is tested according to the collected audio signals, the operability is high, and the method can be applied to the air tightness test of the product in a large scale.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic diagram of an air tightness test apparatus according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of the connection of the air tightness test device and the tested product according to the embodiment of the present disclosure;
FIG. 3 is a flow chart of an air tightness test method according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of an intermediate frequency curve in a gas tightness test method according to an embodiment of the present disclosure;
Fig. 5 is a schematic structural diagram of an air tightness testing device according to an embodiment of the disclosure.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Fig. 1 is a schematic structural view of an air tightness test apparatus according to an embodiment of the present disclosure. Fig. 2 is a schematic diagram of connection between the air tightness test device and the tested product according to the embodiment of the disclosure.
As shown in fig. 1 and 2, the air tightness test apparatus 3000 of the present embodiment may include: microphone 3100, speaker 3200, hollow tube 3300, seal 3400.
The microphone 3100 and the speaker 3200 are disposed at a first end of the hollow tube 3300; a seal 3400 is provided on the hollow pipe 3300.
Wherein the seal 3400 is configured to seal a connection site when the first end of the hollow tube 3300 is connected with a product 4000 to be tested; the speaker 3200 is configured to play audio; the microphone 3100 is configured to collect audio signals.
In one embodiment, the air tightness test apparatus 3000 may further comprise a pressurizing apparatus connected to the second end of the hollow tube for applying pressure into the product under test.
When the air tightness of the tested product is tested, the first end of the hollow pipe 3300 is connected with the tested product 4000, the audio is played through the loudspeaker 3200, and the audio signal is collected through the microphone 3100 and recorded as a first audio signal. Then, pressure is applied to the tested product through the pressurizing equipment, audio is played through the loudspeaker 3200 again, and an audio signal is collected through the microphone 3100 and recorded as a second audio signal. After a period of time after the pressure is applied, audio is played through the speaker 3200 and an audio signal is collected through the microphone 3100, denoted as a third audio signal.
And comparing the third audio signal with the first audio signal and the second audio signal respectively to obtain an air tightness test result of the tested product. Optionally, if the third audio signal is consistent with the first audio signal, the air tightness test result is that the air tightness test is not passed; and if the third audio signal is consistent with the second audio signal, the air tightness test result is that the air tightness test is passed.
The air tightness test equipment can test the air tightness of the tested product according to the collected audio signals, has strong operability and can be applied to the air tightness test of the product in a large scale.
Fig. 3 is a flow chart illustrating a method for testing air tightness according to an embodiment of the disclosure. The air tightness testing method of the embodiment can be executed by an air tightness testing device, the air tightness testing device can be arranged in air tightness testing equipment, a microphone and a loudspeaker are arranged in the air tightness testing equipment, and the air tightness testing equipment is connected with a tested product when the tested product is tested.
Specifically, as shown in fig. 3, the air tightness testing method of the present embodiment may include the following steps 1100 to 1300:
Step 1100, controlling the speaker to play audio.
Step 1200, an audio signal is collected by the microphone.
Step 1300, obtaining the air tightness test result of the tested product according to the collected audio signal.
In this embodiment, the principle that the vibration amplitude of the diaphragm is different under different air pressures is utilized, that is, when the external air pressure is increased, the vibration amplitude of the diaphragm is reduced, and when the external air pressure is reduced, the vibration amplitude of the diaphragm is increased. Accordingly, the amplitude of vibration of the diaphragm changes with the change of air pressure, so that the audio signal acquired by the microphone also changes. By utilizing the principle, the technical scheme of the embodiment realizes the test of the air tightness of the tested product.
In one possible implementation, a standard audio signal may be predetermined, where the standard audio signal is obtained by collecting audio from a microphone after playing audio from a speaker if the air tightness of the product under test is acceptable.
When the air tightness test is actually carried out on the tested product, the loudspeaker is controlled to play the same audio, the audio played by the loudspeaker is collected through the microphone to obtain an audio signal, and the audio signal is compared with a standard audio signal to obtain the air tightness test result of the tested product according to the comparison result.
For example, when the audio signal is consistent with the standard audio signal, the obtained air tightness test result is that the air tightness of the tested product is qualified; and when the audio signal is inconsistent with the standard audio signal, the obtained air tightness test result is that the air tightness of the tested product is unqualified.
In another possible implementation, the speaker may be controlled to play audio with different pressures applied to the product under test. For example, the three time nodes may control the speaker to play audio after the air tightness test device is connected to the product under test, after the product under test is pressurized, and after the product under test is pressurized for a period of time. And then comparing the audio signals acquired at the three time nodes, thereby obtaining the air tightness test result of the tested product.
Specifically, a first audio signal may be acquired by the microphone at the first time; collecting a second audio signal at the second moment through the microphone; and acquiring a third audio signal at the third moment by the microphone.
Wherein the first moment is the moment when the first pressure is applied to the tested product; the second moment is the moment when the second pressure is applied to the tested product; the third moment is the moment when the third pressure is applied to the tested product. In this embodiment, the first time is, for example, a time when the air tightness test device is connected to the product to be tested, the second time is, for example, a time when the product to be tested is filled with a predetermined amount of air, and this operation is completed, and the third time is, for example, a time when a preset time period is provided after the product to be tested is pressurized.
After a first audio signal, a second audio signal and a third audio signal are acquired, comparing the third audio signal with the first audio signal and the second audio signal respectively; and obtaining the air tightness test result of the tested product according to the comparison result.
Optionally, if the third audio signal is consistent with the first audio signal, the air tightness test result is that the air tightness test is not passed; and if the third audio signal is consistent with the second audio signal, the air tightness test result is that the air tightness test is passed.
In one particular implementation, the first audio signal may be converted to a corresponding first frequency response curve, the second audio signal may be converted to a corresponding second frequency response curve, and the third audio signal may be converted to a corresponding third frequency response curve.
After the first frequency response curve, the second frequency response curve and the third frequency response curve are obtained, the air tightness test result of the tested product can be obtained according to the frequency response curves. Specifically, when the third frequency response curve is the same as the first frequency response curve, the air tightness test result is that the air tightness of the tested product is unqualified after the tested product is pressurized and placed for a period of time, and the collected frequency response curve is the same as that when the air leakage is not pressurized at first; when the third frequency response curve is the same as the second frequency response curve, the air leakage phenomenon does not occur after the tested product is pressurized and placed for a period of time, so that the acquired third frequency response curve is the same as the frequency response curve acquired when the pressurization is just finished, and the air tightness test result is that the air tightness of the tested product is qualified. As shown in fig. 4, the third frequency response curve is the same as the first frequency response curve and different from the second frequency response curve, and the air tightness test result can be obtained at this time to be that the air tightness of the tested product is not qualified, that is, the air leakage phenomenon exists in the tested product.
According to the air tightness testing method, the loudspeaker is controlled to play the audio; collecting an audio signal through the microphone; and obtaining an air tightness test result of the tested product according to the collected audio signal. Therefore, the air tightness of the tested product is tested according to the collected audio signals, the operability is high, and the method can be applied to the air tightness test of the product in a large scale.
Fig. 5 is a schematic structural diagram of an air tightness testing apparatus according to an embodiment of the present disclosure. The air tightness test equipment of the embodiment can be arranged in the air tightness test equipment, wherein the air tightness test equipment is provided with a microphone and a loudspeaker, and the air tightness test equipment is connected with a tested product when the tested product is tested.
As shown in fig. 5, the air tightness test apparatus 2000 of the present embodiment may specifically include: a control module 2100, an acquisition module 2200, and a processing module 2300.
Wherein, the control module 2100 is configured to control the speaker to play audio.
An acquisition module 2200 for acquiring audio signals through the microphone.
The processing module 2300 is configured to obtain an air tightness test result of the tested product according to the collected audio signal.
In one embodiment, the control module 2100 is specifically configured to: and under the condition that different pressures are applied to the tested product, controlling the loudspeaker to play audio.
In one embodiment, the acquisition module 2200 is specifically configured to: collecting a first audio signal at the first time through the microphone; collecting a second audio signal at the second moment through the microphone; and acquiring a third audio signal at the third moment by the microphone.
Wherein the first moment is the moment when the first pressure is applied to the tested product; the second moment is the moment when the second pressure is applied to the tested product; the third moment is the moment when the third pressure is applied to the tested product.
In one embodiment, the processing module 2300 is specifically configured to: comparing the third audio signal with the first audio signal and the second audio signal, respectively; and obtaining the air tightness test result of the tested product according to the comparison result.
In one embodiment, the processing module 2300 is specifically configured to: comparing the collected audio signal with a standard audio signal, and obtaining an air tightness test result of the tested product according to the comparison result.
According to the air tightness test equipment, the control module for controlling the loudspeaker to play the audio is arranged, the acquisition module for acquiring the audio signals through the microphone and the processing module for obtaining the air tightness test result of the tested product according to the acquired audio signals are arranged, so that the air tightness of the tested product can be tested according to the acquired audio signals, the operability is high, and the air tightness test equipment can be applied to the air tightness test of the product in a large scale.
The present invention may be a system, method, and/or computer program product. The computer program product may include a computer readable storage medium having computer readable program instructions embodied thereon for causing a processor to implement aspects of the present invention.
The computer readable storage medium may be a tangible device that can hold and store instructions for use by an instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: portable computer disks, hard disks, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static Random Access Memory (SRAM), portable compact disk read-only memory (CD-ROM), digital Versatile Disks (DVD), memory sticks, floppy disks, mechanical coding devices, punch cards or in-groove structures such as punch cards or grooves having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media, as used herein, are not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., optical pulses through fiber optic cables), or electrical signals transmitted through wires.
The computer readable program instructions described herein may be downloaded from a computer readable storage medium to a respective computing/processing device or to an external computer or external storage device over a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmissions, wireless transmissions, routers, firewalls, switches, gateway computers and/or edge servers. The network interface card or network interface in each computing/processing device receives computer readable program instructions from the network and forwards the computer readable program instructions for storage in a computer readable storage medium in the respective computing/processing device.
Computer program instructions for carrying out operations of the present invention may be assembly instructions, instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as SMALLTALK, C ++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer readable program instructions may be executed entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, aspects of the present invention are implemented by personalizing electronic circuitry, such as programmable logic circuitry, field Programmable Gate Arrays (FPGAs), or Programmable Logic Arrays (PLAs), with state information for computer readable program instructions, which can execute the computer readable program instructions.
Various aspects of the present invention are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.
These computer readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer readable program instructions may also be stored in a computer readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer readable medium having the instructions stored therein includes an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. It is well known to those skilled in the art that implementation by hardware, implementation by software, and implementation by a combination of software and hardware are all equivalent.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the invention is defined by the appended claims.
Claims (10)
1. The air tightness testing method is applied to air tightness testing equipment, wherein a microphone and a loudspeaker are arranged in the air tightness testing equipment, and the air tightness testing equipment is connected with a tested product, and is characterized by comprising the following steps:
controlling the loudspeaker to play audio;
collecting an audio signal through the microphone;
According to the collected audio signals, an air tightness test result of the tested product is obtained; wherein,
The controlling the speaker to play audio includes:
and under the condition that different pressures are applied to the tested product, controlling the loudspeaker to play audio.
2. The method of claim 1, wherein the capturing of the audio signal by the microphone comprises:
collecting a first audio signal at a first time through the microphone;
collecting a second audio signal at a second moment by the microphone; and
Collecting a third audio signal at a third moment by the microphone;
Wherein the first moment is the moment when the first pressure is applied to the tested product; the second moment is the moment when the second pressure is applied to the tested product; the third moment is the moment when the third pressure is applied to the tested product.
3. The method according to claim 2, wherein the obtaining the air tightness test result of the tested product according to the collected audio signal comprises:
Comparing the third audio signal with the first audio signal and the second audio signal, respectively;
and obtaining the air tightness test result of the tested product according to the comparison result.
4. The method according to claim 1, wherein the obtaining the air tightness test result of the tested product according to the collected audio signal comprises:
comparing the collected audio signal with a standard audio signal, and obtaining an air tightness test result of the tested product according to the comparison result.
5. An air tightness testing device is applied to air tightness testing equipment, a microphone and a loudspeaker are arranged in the air tightness testing equipment, and the air tightness testing equipment is connected with a tested product, and is characterized in that the device comprises:
The control module is used for controlling the loudspeaker to play audio;
The acquisition module is used for acquiring an audio signal through the microphone;
The processing module is used for obtaining an air tightness test result of the tested product according to the collected audio signal; wherein,
The control module is specifically used for:
and under the condition that different pressures are applied to the tested product, controlling the loudspeaker to play audio.
6. The apparatus of claim 5, wherein the acquisition module is specifically configured to:
Collecting a first audio signal at a first time through the microphone; collecting a second audio signal at a second moment by the microphone; and, at a third instant, acquiring a third audio signal by the microphone;
Wherein the first moment is the moment when the first pressure is applied to the tested product; the second moment is the moment when the second pressure is applied to the tested product; the third moment is the moment when the third pressure is applied to the tested product.
7. The apparatus of claim 6, wherein the processing module is specifically configured to:
Comparing the third audio signal with the first audio signal and the second audio signal, respectively;
and obtaining the air tightness test result of the tested product according to the comparison result.
8. The apparatus of claim 5, wherein the processing module is specifically configured to:
comparing the collected audio signal with a standard audio signal, and obtaining an air tightness test result of the tested product according to the comparison result.
9. An air tightness testing apparatus, characterized in that the apparatus comprises: microphone, speaker, hollow tube, seal; the microphone and the loudspeaker are arranged at the first end of the hollow tube; a sealing element is arranged on the hollow tube;
Wherein the sealing member is configured to seal a connection site when the first end of the hollow tube is connected with a product to be tested; wherein,
An air tightness testing device is applied to the air tightness testing equipment, the device comprises:
The control module is used for controlling the loudspeaker to play audio;
The acquisition module is used for acquiring an audio signal through the microphone;
The processing module is used for obtaining an air tightness test result of the tested product according to the collected audio signal; wherein,
The control module is specifically used for:
and under the condition that different pressures are applied to the tested product, controlling the loudspeaker to play audio.
10. The apparatus of claim 9, further comprising a pressurizing apparatus;
the pressurizing device is connected to the second end of the hollow tube.
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