CN106303886B - A kind of performing leak test system of moving-iron receiver - Google Patents
A kind of performing leak test system of moving-iron receiver Download PDFInfo
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- CN106303886B CN106303886B CN201610913648.7A CN201610913648A CN106303886B CN 106303886 B CN106303886 B CN 106303886B CN 201610913648 A CN201610913648 A CN 201610913648A CN 106303886 B CN106303886 B CN 106303886B
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- tracheae
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/05—Detection of connection of loudspeakers or headphones to amplifiers
Abstract
The present invention relates to the field of test technology more particularly to a kind of performing leak test systems of moving-iron receiver.The system includes air compressor machine, regulator, air flow sensor and processor, it is used for air compressor that regulator is output to after compressing air, air after compression is depressured to the input port that air flow sensor is output to after preset air pressure, the delivery outlet for going out the sound pressure stream that sound pipe sounding generates and being output to air flow sensor of moving-iron receiver by regulator.The flow signal of the sound pressure stream of the generation of sound pipe sounding out of the flow signal, air flow sensor delivery outlet acquisition moving-iron receiver of the air input of the air flow sensor input port acquisition preset air pressure of the system, flow is calculated by the difference of the pressure of the pressure and delivery outlet of the input port of analysis processing air flow sensor, in conjunction with the preset air pressure and the received audio signal of moving-iron receiver of the air that input port inputs, the leakproofness index of moving-iron receiver is obtained.
Description
[technical field]
The present invention relates to the field of test technology more particularly to a kind of performing leak test systems of moving-iron receiver.
[background technique]
Usually said receiver refers to moving-iron receiver, and working principle (physical principle) is with traditional moving-iron type loudspeaking
Device is similar: the audio electrical signal feed-in voice coil of variation, voice coil are placed in the magnetic gap of a magnetic circuit, electricity of the voice coil because of variation
It flows the driving of the generated electromagnetic force (Lorentz force) changed and vibrates up and down, and drive vibrating membrane driving front and back air,
Generate sound wave.
Although so far, moving-iron receiver is higher because of its there are also the receiver type of many other transduction principles
Cost performance, mature production technology, protean outer dimension and lead-out mode, it has also become in mobile phone and fixed-line telephone
The mainstream electro-acoustic element of voice frequency terminal.
Moving-iron receiver includes the magnetic driving mechanism and circuit board of shell, vibrating membrane and vibrating membrane transmission connection, existing
Have in technology, vibrating membrane is generally positioned at interior of shell and Shell is divided into ante-chamber and back cavity, the wall body of ante-chamber
It is equipped with acoustic aperture, acoustic aperture connects out sound pipe.Shell (ante-chamber and back cavity and its gas between the external world of moving-iron receiver
Close property), the also referred to as leakproofness of moving-iron receiver.The leakproofness of iron receiver is related to its electrical property and quality, how to ensure
The satisfactory range of the leakproofness of moving-iron receiver needs a test equipment.
[summary of the invention]
The technical issues of how present invention ensures the leakproofness of moving-iron receiver satisfactory range for the prior art,
A kind of performing leak test system of moving-iron receiver is provided, technical solution is as follows:
The present invention provides a kind of performing leak test system of moving-iron receiver, comprising:
Air compressor machine, the air compressor machine are equipped with air suction inlet, compression chamber and exhaust outlet；
Regulator, the regulator include that the first pressure regulation entrance and the second pressure regulation export, the first pressure regulation entrance
It is connect with exhaust outlet；
Air flow sensor, the air flow sensor include input port and delivery outlet, the input port and second
Pressure regulation outlet connection, the delivery outlet are connect with the sound pipe that goes out of the moving-iron receiver；
Processor, the processor are connect with air flow sensor；
It is described it is used for air compressor be output to the regulator after compressing air, air is depressured after regulator will compress
The input port of the air flow sensor is output to after to preset air pressure, the moving-iron receiver goes out what sound pipe sounding generated
Sound pressure stream is output to the delivery outlet of the air flow sensor, and processor analysis handles the flow signal of the input port
With the flow signal of delivery outlet, in conjunction with input port input air preset air pressure and the received audio signal of moving-iron receiver,
Obtain the leakproofness index of the moving-iron receiver.
Optionally, the regulator includes:
First pressure regulator valve, first pressure regulator valve include the first valve body, and the two sides of first valve body are respectively equipped with
The first pressure regulation entrance and the first pressure regulation export, and are additionally provided with the first adjustment portion, first pressure regulation on first valve body
Entrance is connect with exhaust outlet；
Second pressure regulator valve, second pressure regulator valve include the second valve body, and the two sides of second valve body are respectively equipped with
Second pressure regulation entrance and second pressure regulation export, and are additionally provided with the second adjustment portion, second pressure regulation on second valve body
Entrance and the first pressure regulation outlet connect.
Optionally, going out for the delivery outlet and moving-iron receiver of the air flow sensor uses tracheae variable diameter between sound pipe
Device connection.
Optionally, the tracheae diameter changing device includes the first tracheae, reducer union and the second tracheae；Wherein, described first
One end of tracheae connects the delivery outlet of the air flow sensor, and the other end of first tracheae connects reducer union, institute
The one end for stating the second tracheae connects the sound pipe that goes out of the moving-iron receiver, and the other end of second tracheae connects reducer union.
Optionally, first tracheae is the tracheae of outer diameter 4mm.
Optionally, second tracheae is the tracheae with internal diameter 1.2mm.
Optionally, the dynamic mass range of flow of the air flow sensor is 0.03-400sccm.
Optionally, the full scale accuracy rating of the air flow sensor is 0.05%-1%.
Optionally, the processor is industrial personal computer, installation data interpretation software analysis processing institute on the industrial personal computer
State the flow signal of input port and the flow signal of delivery outlet.
Optionally, the flow signal of the input port and the flow signal of delivery outlet are with ASCII
Form transmission.
The beneficial effect of the embodiment of the present invention is, the performing leak test system of moving-iron receiver provided in an embodiment of the present invention
System includes air compressor machine, regulator, air flow sensor and processor, it is used for air compressor be output to after compressing air it is described
Air after compression is depressured to the input that the air flow sensor is output to after preset air pressure by regulator, regulator
Mouthful, the output for going out the sound pressure stream that sound pipe sounding generates and being output to the air flow sensor of the moving-iron receiver
Mouthful, processor analysis handles the flow signal of the input port and the flow signal of delivery outlet, obtains the moving-iron receiver
Leakproofness index, and analyze the whether satisfactory range of its leakproofness.Moving-iron receiver provided in an embodiment of the present invention it is close
Envelope property test macro uses the flow signal of the air input of air flow sensor input port acquisition preset air pressure, air stream
Quantity sensor delivery outlet acquires the flow signal for going out the sound pressure stream that sound pipe sounding generates of moving-iron receiver, at analysis
The difference for managing the pressure of the input port of air flow sensor and the pressure of delivery outlet calculates flow, the air inputted in conjunction with input port
Preset air pressure and the received audio signal of moving-iron receiver, obtain the leakproofness index of moving-iron receiver.
[Detailed description of the invention]
Fig. 1 is a kind of structural schematic diagram of the performing leak test system of moving-iron receiver provided in an embodiment of the present invention.
Fig. 2 be another embodiment of the present invention provides a kind of moving-iron receiver performing leak test system structural representation
Figure.
Fig. 3 is a kind of structural representation of the performing leak test system for moving-iron receiver that further embodiment of this invention provides
Figure.
Fig. 4 is a kind of structural representation of the performing leak test system for moving-iron receiver that yet another embodiment of the invention provides
Figure.
Fig. 5 be another embodiment of the present invention provides a kind of moving-iron receiver performing leak test system structural representation
Figure.
[specific embodiment]
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
In addition, as long as technical characteristic involved in the various embodiments of the present invention described below is each other not
Constituting conflict can be combined with each other.
As shown in Figure 1, the performing leak test system of moving-iron receiver provided in an embodiment of the present invention includes air compressor machine 10, adjusts
Pressure device 20, air flow sensor 30 and processor 40.
Air compressor machine 10 is equipped with air suction inlet (not shown), compression chamber (not shown) and exhaust outlet (not shown).
Regulator 20 includes that the first pressure regulation entrance (not shown) and the second pressure regulation export (not shown), the first pressure regulation entrance
It is connect with exhaust outlet.
Air flow sensor 30 includes input port (not shown) and delivery outlet (not shown), and input port goes out with the second pressure regulation
Mouth connection, delivery outlet and moving-iron receiver go out sound pipe connection.
Processor 40 is connect with air flow sensor 30.
For being output to regulator 20 after compressing air, air after compression is depressured to air compressor machine 10 by regulator 20
The input port of air flow sensor 30, the sound pressure for going out sound pipe sounding and generating of moving-iron receiver are output to after preset air pressure
Stream is output to the delivery outlet of air flow sensor 30, the flow signal of the analysis processing of processor 40 input port and the stream of delivery outlet
Signal is measured, obtains the leakproofness index of moving-iron receiver.
Wherein, preset air pressure can according to actual needs, in the moving-iron receiver requirement of test different model or different styles
Leakproofness index when, the difference of the leakproofness range of different moving-iron receivers designs.Certainly, different moving-iron receivers is close
The range that envelope property requires is also different.
The performing leak test system of moving-iron receiver provided in an embodiment of the present invention include air compressor machine 10, regulator 20,
Air flow sensor 30 and processor 40, air compressor machine 10 is for being output to the regulator, pressure regulation dress after compressing air
Set 20 and air after compression be depressured to the input port for being output to the air flow sensor 30 after preset air pressure, the dynamic iron by
The delivery outlet for going out the sound pressure stream that sound pipe sounding generates and being output to the air flow sensor 30 of words device, processor 40 divide
Analysis handles the flow signal of the input port and the flow signal of delivery outlet, obtains the leakproofness index of the moving-iron receiver,
And analyze the whether satisfactory range of its leakproofness.The performing leak test system of moving-iron receiver provided in an embodiment of the present invention
System is sensed using the flow signal of the air input of the input port acquisition preset air pressure of air flow sensor 30, air mass flow
The flow signal for going out the sound pressure stream that sound pipe sounding generates of the delivery outlet acquisition moving-iron receiver of device 30, is handled by analysis
The difference of the pressure of the pressure and delivery outlet of the input port of air flow sensor calculates flow, the air inputted in conjunction with input port
Preset air pressure and the received audio signal of moving-iron receiver, obtain the leakproofness index of moving-iron receiver.
Further, it is connected between regulator 20 and air flow sensor 30 by tracheae, it can using tracheae connection
The arrangement of the gas path pipe of gas channels is assisted, the distance of gas path pipe connection is increased.Specifically, the second of regulator 20 is adjusted
It extrudes and is connected between mouth and the input port of air flow sensor 30 by the tracheae that outer diameter is 4mm.
The air ventilation passage of air compressor machine 10 to air flow sensor 30 is gas channels.
In another embodiment, as shown in Fig. 2, regulator 20 includes the first pressure regulator valve 21 and the second pressure regulator valve 22.
First pressure regulator valve 21 includes the first valve body (not shown), and the two sides of the first valve body are respectively equipped with the first pressure regulation and enter
Mouthful and the first pressure regulation export (not shown), be additionally provided with the first adjustment portion (not shown) on the first valve body, the first pressure regulation entrance with
Exhaust outlet connection.Wherein, the first pressure regulator valve 21 is air pressure-adjusting valve.
Second pressure regulator valve 22 includes the second valve body (not shown), and the two sides of the second valve body are respectively equipped with the second pressure regulation and enter
Mouthful (not shown) and the second pressure regulation outlet, are additionally provided with the second adjustment portion (not shown) on the second valve body, the second pressure regulation entrance with
First pressure regulation outlet connection.Wherein, the second pressure regulator valve 22 is precise pressure regulating valve.
The compressed air for 7~8MPa that air compressor machine 10 compresses enters the first pressure regulator valve 21, and the first pressure regulator valve 21 will compression sky
Gas is depressured to 3~4MPa, and the first pressure regulation of the second pressure regulation entrance and the first pressure regulator valve 21 of the second pressure regulator valve 22, which exports, to be connected, and adjusts
Air pressure is transferred to required pressure by the second adjustment portion for saving the second pressure regulator valve 22.
The compressed air of air compressor machine 10 is introduced into the first pressure regulator valve 21 and compressed air is depressured to 3~4MPa, enters back into
Two pressure regulator valves 22, which are adjusted, arrives required pressure (being also preset air pressure), and air arrives the gas of air flow sensor 30 through air compressor machine 10 again
Air pressure difference gradient is smaller in the gas channels of road connection, and air pressure difference gradient is smaller to make the favorite outer error of gas channels general
Rate is lower, and it is more reasonable to design.
Further, the first pressure regulator valve 21 is connected with the second pressure regulator valve 22 using tracheae, can assist gas using tracheae connection
The arrangement of the gas path pipe of paths increases the distance of gas path pipe connection.Specifically, the second pressure regulation of the second pressure regulator valve 22 enters
It is connected between mouth and the first pressure regulation outlet of the first pressure regulator valve 21 by the tracheae that outer diameter is 4mm.
Still further, being connected between the second pressure regulator valve 22 and air flow sensor 30 by tracheae, connected using tracheae
The arrangement that can assist the gas path pipe of gas channels is connect, the distance of gas path pipe connection is increased.Specifically, second pressure regulator valve 22
It is connected between second pressure regulation entrance and the input port of air flow sensor 30 by the tracheae that outer diameter is 4mm.
In another embodiment, as shown in figure 3, the sound pipe out of the delivery outlet of air flow sensor 30 and moving-iron receiver
It is connected between 200 using tracheae diameter changing device 300.The both ends of tracheae diameter changing device 300 are separately connected air flow sensor 30
Delivery outlet and moving-iron receiver go out sound pipe 200, can assist the arrangement of the gas path pipe of gas channels, increase gas path pipe and connect
The distance connect, or in some embodiments, can buffer air flowing pressure.
In another embodiment, as shown in figure 4, tracheae diameter changing device includes the first tracheae, reducer union and the second tracheae；
Wherein, the delivery outlet of one end connection air flow sensor of the first tracheae, the other end of the first tracheae connect reducer union, the
One end connection moving-iron receiver of two tracheaes goes out sound pipe, and the other end of the second tracheae connects reducer union.
Further, the first tracheae is the tracheae of outer diameter 4mm.The tracheae of outer diameter 4mm is one kind of standard tracheae.
Further, the second tracheae is the tracheae with internal diameter 1.2mm.The tracheae of internal diameter 1.2mm is one kind of standard tracheae.
In another embodiment, as shown in figure 4, processor is industrial personal computer, installation data interpretation software on industrial personal computer
The flow signal of analysis processing 30 input port of air flow sensor and the flow signal of delivery outlet.Air flow sensor 30 is
Flow is calculated by the difference of the pressure of the pressure and delivery outlet of input port.
Further, it as shown in figure 5, the system also includes analog-to-digital conversion module 50, is used for air flow sensor
The flow signal of 30 input ports and the flow signal of delivery outlet are converted into the data on flows of input port and the flow of delivery outlet respectively
Data, then export to processor 40.
Still further, as shown in figure 5, through the analysis of processor 40, treated the system also includes display device 60
The leakproofness index of moving-iron receiver is shown by display device 60, allows user during the test can real time inspection test
As a result.Display device 60 is specially non-tactile liquid crystal display or touch screen.
Further, the flow signal of the flow signal and delivery outlet of input port is with ASCII character (American
Standard Code for Information Interchange, abbreviation ASCII, ASCII) shape
Formula transmission.Wherein, air flow sensor 30 passes through RS232 interface for the flow signal of the flow signal of input port and delivery outlet
It transfers out.
The performing leak test system of moving-iron receiver provided in an embodiment of the present invention includes air compressor machine 10, the first pressure regulator valve
21, the second pressure regulator valve 22, air flow sensor 30, the first tracheae 310, reducer union 320, the second tracheae 330 and processor
40, for air compressor machine 10 for being output to first pressure regulator valve 21 after compressing air, the first pressure regulator valve 21 will be defeated after air pressure regulation
Out to the second pressure regulator valve 22, the second pressure regulation air of pressure regulator valve 22 2 times is output to the air stream after so that it is depressured to preset air pressure
The input port of quantity sensor 30, the moving-iron receiver go out sound pipe sounding generate sound pressure stream flow through the second tracheae 330,
Reducer union 320 and the first tracheae 310 are output to the delivery outlet of air flow sensor 30, and the analysis processing of processor 40 is described defeated
The flow signal of entrance and the flow signal of delivery outlet, obtain the leakproofness index of the moving-iron receiver, and analyze its sealing
Property whether satisfactory range.The performing leak test system of moving-iron receiver provided in an embodiment of the present invention, uses air stream
The flow signal of air input, the delivery outlet of air flow sensor 30 of the input port acquisition preset air pressure of quantity sensor 30 are adopted
The flow signal for going out the sound pressure stream that sound pipe sounding generates for collecting moving-iron receiver handles air flow sensor by analysis
Input port pressure and delivery outlet pressure difference calculate flow, in conjunction with input port input air preset air pressure and dynamic iron
The received audio signal of receiver obtains the leakproofness index of moving-iron receiver.Moving-iron receiver provided in an embodiment of the present invention
Performing leak test system it is relatively rigorous and practical, can detect the leakproofness of various moving-iron receivers.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of performing leak test system of moving-iron receiver characterized by comprising
Air compressor machine, the air compressor machine are equipped with air suction inlet, compression chamber and exhaust outlet；
Regulator, the regulator include that the first pressure regulation entrance and the second pressure regulation export, the first pressure regulation entrance and row
Port connection；
Air flow sensor, the air flow sensor include input port and delivery outlet, the input port and the second pressure regulation
Outlet connection, the delivery outlet are connect with the sound pipe that goes out of the moving-iron receiver；
Processor, the processor are connect with air flow sensor；
It is described it is used for air compressor the regulator is output to after compressing air, air after compression is depressured to pre- by regulator
Determine the input port that the air flow sensor is output to after air pressure, the sounding for going out sound pipe sounding and generating of the moving-iron receiver
Air stream is output to the delivery outlet of the air flow sensor, and processor analysis handles the flow signal of the input port and defeated
The flow signal of outlet is obtained in conjunction with the preset air pressure and the received audio signal of moving-iron receiver of the air that input port inputs
The leakproofness index of the moving-iron receiver.
2. the system as claimed in claim 1, which is characterized in that the regulator includes:
First pressure regulator valve, first pressure regulator valve include the first valve body, and the two sides of first valve body are respectively equipped with described
First pressure regulation entrance and the first pressure regulation export, and are additionally provided with the first adjustment portion, the first pressure regulation entrance on first valve body
It is connect with exhaust outlet；
Second pressure regulator valve, second pressure regulator valve include the second valve body, and the two sides of second valve body are respectively equipped with second
Pressure regulation entrance and second pressure regulation export, and are additionally provided with the second adjustment portion, the second pressure regulation entrance on second valve body
It exports and connects with the first pressure regulation.
3. the system as claimed in claim 1, which is characterized in that the delivery outlet and moving-iron receiver of the air flow sensor
Go out between sound pipe and connected using tracheae diameter changing device.
4. system as claimed in claim 3, which is characterized in that the tracheae diameter changing device includes the first tracheae, reducer union
With the second tracheae；Wherein, one end of first tracheae connects the delivery outlet of the air flow sensor, first tracheae
The other end connect reducer union, one end of second tracheae connect the moving-iron receiver go out sound pipe, second gas
The other end of pipe connects reducer union.
5. system as claimed in claim 4, which is characterized in that first tracheae is the tracheae of outer diameter 4mm.
6. system as claimed in claim 4, which is characterized in that second tracheae is the tracheae with internal diameter 1.2mm.
7. such as system as claimed in any one of claims 1 to 6, which is characterized in that the dynamic mass of the air flow sensor
Range of flow is 0.03-400sccm.
8. such as system as claimed in any one of claims 1 to 6, which is characterized in that the full scale essence of the air flow sensor
Degree range is 0.05%-1%.
9. such as system as claimed in any one of claims 1 to 6, which is characterized in that the processor is industrial personal computer, the industrial personal computer
Upper installation data interpretation software analysis handles the flow signal of the input port and the flow signal of delivery outlet.
10. such as system as claimed in any one of claims 1 to 6, which is characterized in that the flow signal and delivery outlet of the input port
Flow signal transmitted in the form of ASCII.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610913648.7A CN106303886B (en) | 2016-10-19 | 2016-10-19 | A kind of performing leak test system of moving-iron receiver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610913648.7A CN106303886B (en) | 2016-10-19 | 2016-10-19 | A kind of performing leak test system of moving-iron receiver |
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| CN106303886A CN106303886A (en) | 2017-01-04 |
| CN106303886B true CN106303886B (en) | 2019-05-17 |
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| CN201532292U (en) * | 2009-09-11 | 2010-07-21 | 彭光正 | Pneumatic circuit of multifunctional gas-tightness detector |
| CN102323015A (en) * | 2011-08-24 | 2012-01-18 | 苏州工业园区服务外包职业学院 | Gas leakage detection apparatus |
| CN105372026A (en) * | 2015-10-15 | 2016-03-02 | Tcl移动通信科技（宁波）有限公司 | Air tightness detection device and method of microphone pickup structure path |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8804972B2 (en) * | 2007-11-11 | 2014-08-12 | Source Of Sound Ltd | Earplug sealing test |
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2016
- 2016-10-19 CN CN201610913648.7A patent/CN106303886B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201532292U (en) * | 2009-09-11 | 2010-07-21 | 彭光正 | Pneumatic circuit of multifunctional gas-tightness detector |
| CN102323015A (en) * | 2011-08-24 | 2012-01-18 | 苏州工业园区服务外包职业学院 | Gas leakage detection apparatus |
| CN105372026A (en) * | 2015-10-15 | 2016-03-02 | Tcl移动通信科技（宁波）有限公司 | Air tightness detection device and method of microphone pickup structure path |
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| CN106303886A (en) | 2017-01-04 |
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Effective date of registration: 20210810 Address after: 518000 No.3 Factory, Qiaotou Fuqiao Industrial Zone, Fuyong Town, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN EVERWIN PRECISION TECHNOLOGY Co.,Ltd. Address before: 518000 2nd floor, building 25, Zhiheng Industrial Park, nantouguankou 2nd Road, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN BELLSING ACOUSTIC TECHNOLOGY Co.,Ltd. |