CN106303886A - 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
- Publication number
- CN106303886A CN106303886A CN201610913648.7A CN201610913648A CN106303886A CN 106303886 A CN106303886 A CN 106303886A CN 201610913648 A CN201610913648 A CN 201610913648A CN 106303886 A CN106303886 A CN 106303886A
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- air
- pressure
- moving
- flow sensor
- trachea
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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 technical field of measurement and test, particularly relate to the performing leak test system of a kind of moving-iron receiver.This system includes air compressor machine, regulator, air flow sensor and processor, used for air compressor output after being compressed by air arrives regulator, regulator exports the input port of air flow sensor after air after compression is depressured to preset air pressure, the sound pressure stream going out the generation of sound pipe sounding of moving-iron receiver exports the delivery outlet of air flow sensor.The air flow sensor input port of this system gathers the flow signal of air input of preset air pressure, the flow signal going out the sound pressure stream that sound pipe sounding produces of air flow sensor delivery outlet collection moving-iron receiver, difference calculated flow rate by the pressure of the input port of analyzing and processing air flow sensor with the pressure of delivery outlet, the audio signal received with moving-iron receiver in conjunction with the preset air pressure of the air of input port input, draws the sealing index of moving-iron receiver.
Description
[technical field]
The present invention relates to technical field of measurement and test, particularly relate to the performing leak test system of a kind of moving-iron receiver.
[background technology]
Usually said receiver refers to moving-iron receiver, and its operation principle (physical principle) is raised one's voice with traditional moving-iron type
Device is similar: the audio electrical signal feed-in voice coil loudspeaker voice coil of change, and voice coil loudspeaker voice coil is placed in the magnetic gap of a magnetic circuit, and voice coil loudspeaker voice coil is because of the electricity of change
The driving of the electromagnetic force (Lorentz force) of the produced change of stream and up-down vibration, and air before and after driving vibrating diaphragm to drive,
Produce sound wave.
Although receiver's type of the most a lot of other transduction principles, but up to now, moving-iron receiver is higher because of it
Cost performance, ripe production technology, protean overall dimensions and lead-out mode, it has also become in mobile phone and landline telephone
The main flow electro-acoustic element of voice frequency terminal.
Moving-iron receiver includes magnetic driving mechanism and the circuit board that shell, vibrating diaphragm be in transmission connection with vibrating diaphragm, existing
Having in technology, vibrating diaphragm is generally positioned at enclosure and Shell is divided into ante-chamber and back cavity, the wall body of ante-chamber
Being provided with acoustic aperture, acoustic aperture connects sound pipe.The Shell of moving-iron receiver (ante-chamber and back cavity and and the external world between gas
Close property), the also referred to as sealing of moving-iron receiver.The sealing of ferrum receiver is related to its electrical property and quality, how to guarantee
The satisfactory scope of sealing of moving-iron receiver needs a test equipment.
[summary of the invention]
The present invention is directed to the technical problem how prior art guarantees the satisfactory scope of sealing of moving-iron receiver,
Thering is provided the performing leak test system of a kind of moving-iron receiver, technical scheme is as follows:
The present invention provides the performing leak test system of a kind of moving-iron receiver, including:
Air compressor machine, described air compressor machine is provided with air suction inlet, compression chamber and air vent；
Regulator, described regulator includes the first pressure regulation entrance and the second pressure regulation outlet, described first pressure regulation entrance
It is connected with air vent；
Air flow sensor, described air flow sensor includes input port and delivery outlet, described input port and second
Pressure regulation outlet connects, and described delivery outlet is connected with the sound pipe that goes out of described moving-iron receiver；
Processor, described processor is connected with air flow sensor；
Described used for air compressor output after being compressed by air arrives described regulator, and regulator is by air blood pressure lowering after compression
After preset air pressure, output is to the input port of described air flow sensor, described moving-iron receiver go out what sound pipe sounding produced
Sound pressure stream exports the delivery outlet of described air flow sensor, and processor analyzes and processes the flow signal of described input port
With the flow signal of delivery outlet, draw the sealing index of described moving-iron receiver.
Alternatively, described regulator includes:
First pressure regulator valve, described first pressure regulator valve includes the first valve body, being respectively provided on two sides with of described first valve body
Described first pressure regulation entrance and the first pressure regulation outlet, described first valve body is additionally provided with the first regulation portion, described first pressure regulation
Entrance is connected with air vent；
Second pressure regulator valve, described second pressure regulator valve includes the second valve body, being respectively provided on two sides with of described second valve body
Second pressure regulation entrance and described second pressure regulation outlet, described second valve body is additionally provided with the second regulation portion, described second pressure regulation
Entrance and the first pressure regulation outlet connect.
Alternatively, the delivery outlet of described air flow sensor and moving-iron receiver go out use trachea reducing between sound pipe
Device connects.
Alternatively, described trachea diameter changing device includes the first trachea, reducer union and the second trachea；Wherein, described first
One end of trachea connects the delivery outlet of described air flow sensor, and the other end of described first trachea connects reducer union, institute
That states that one end of the second trachea connects described moving-iron receiver goes out sound pipe, and the other end of described second trachea connects reducer union.
Alternatively, described first trachea is the trachea of external diameter 4mm.
Alternatively, described second trachea is with the trachea of internal diameter 1.2mm.
Alternatively, the dynamic mass range of flow of described air flow sensor is 0.03-400sccm.
Alternatively, the full scale accuracy rating of described air flow sensor is 0.05%-1%.
Alternatively, described processor is industrial computer, installation data interpretation software analyzing and processing institute on described industrial computer
State the flow signal of input port and the flow signal of delivery outlet.
Alternatively, the flow signal of described input port and the flow signal of delivery outlet are with ASCII
Form is transmitted.
Having the beneficial effects that of the embodiment of the present invention, the performing leak test system of the moving-iron receiver that the embodiment of the present invention provides
System includes air compressor machine, regulator, air flow sensor and processor, used for air compressor after air is compressed output to described
Regulator, regulator exports the input of described air flow sensor after air after compression is depressured to preset air pressure
Mouthful, the sound pressure stream going out the generation of sound pipe sounding of described moving-iron receiver exports the output of described air flow sensor
Mouthful, processor analyzes and processes flow signal and the flow signal of delivery outlet of described input port, draws described moving-iron receiver
Sealing index, and analyze the most satisfactory scope of its sealing.Moving-iron receiver close that the embodiment of the present invention provides
Envelope property test system, uses air flow sensor input port to gather the flow signal of air input of preset air pressure, air stream
Quantity sensor delivery outlet gathers the flow signal the sound pressure stream that sound pipe sounding produces of moving-iron receiver, at analysis
The pressure of the input port of reason air flow sensor and the difference calculated flow rate of the pressure of delivery outlet, in conjunction with the air of input port input
The audio signal that receives of preset air pressure and moving-iron receiver, draw the sealing index of moving-iron receiver.
[accompanying drawing explanation]
The structural representation of the performing leak test system of a kind of moving-iron receiver that Fig. 1 provides for the embodiment of the present invention.
The structural representation of the performing leak test system of a kind of moving-iron receiver that Fig. 2 provides for another embodiment of the present invention
Figure.
The structural representation of the performing leak test system of a kind of moving-iron receiver that Fig. 3 provides for further embodiment of this invention
Figure.
The structural representation of the performing leak test system of a kind of moving-iron receiver that Fig. 4 provides for yet another embodiment of the invention
Figure.
The structural representation of the performing leak test system of a kind of moving-iron receiver that Fig. 5 provides for another embodiment of the present invention
Figure.
[detailed description of the invention]
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, not
For limiting the present invention.
As long as additionally, technical characteristic involved in each embodiment of invention described below is the most not
The conflict of composition just can be mutually combined.
As it is shown in figure 1, the performing leak test system of the moving-iron receiver of embodiment of the present invention offer includes air compressor machine 10, adjusts
Pressure device 20, air flow sensor 30 and processor 40.
Air compressor machine 10 is provided with air suction inlet (not shown), compression chamber (not shown) and air vent (not shown).
Regulator 20 includes the first pressure regulation entrance (not shown) and the second pressure regulation outlet (not shown), the first pressure regulation entrance
It is connected with air vent.
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 connects, and delivery outlet is connected with the sound pipe that goes out of moving-iron receiver.
Processor 40 is connected with air flow sensor 30.
Output is to regulator 20 after being compressed by air for air compressor machine 10, and air after compression is depressured to by regulator 20
After preset air pressure, output is to the input port of air flow sensor 30, the sound pressure going out the generation of sound pipe sounding of moving-iron receiver
Stream output is to the delivery outlet of air flow sensor 30, and processor 40 analyzes and processes the flow signal of input port and the stream of delivery outlet
Amount signal, draws the sealing index of moving-iron receiver.
Wherein, preset air pressure can according to actual needs, in test different model or the moving-iron receiver requirement of different style
Sealing index time, the difference of the sealing scope of different moving-iron receivers designs.Certainly, different moving-iron receivers is close
The scope that envelope property requires is the most different.
The performing leak test system of moving-iron receiver that the embodiment of the present invention provides include air compressor machine 10, regulator 20,
Air flow sensor 30 and processor 40, air compressor machine 10 output after being compressed by air fills to described regulator, pressure regulation
Putting 20 and will be depressured to after preset air pressure that output is to the input port of described air flow sensor 30 by air after compression, described dynamic ferrum is subject to
The sound pressure stream going out the generation of sound pipe sounding of words device exports the delivery outlet of described air flow sensor 30, processor 40 points
Analysis processes flow signal and the flow signal of delivery outlet of described input port, draws the sealing index of described moving-iron receiver,
And analyze the most satisfactory scope of its sealing.The performing leak test system of the moving-iron receiver that the embodiment of the present invention provides
System, uses the input port of air flow sensor 30 to gather the flow signal of air input of preset air pressure, air mass flow sensing
The delivery outlet of device 30 gathers the flow signal the sound pressure stream that sound pipe sounding produces of moving-iron receiver, by analyzing and processing
The difference calculated flow rate of the pressure of the input port of air flow sensor and the pressure of delivery outlet, in conjunction with the air of input port input
The audio signal that preset air pressure receives with moving-iron receiver, draws the sealing index of moving-iron receiver.
Further, being connected by trachea between regulator 20 and air flow sensor 30, using trachea to connect can
Assist the layout of the gas path pipe of gas channels, increase the distance that gas path pipe connects.Specifically, the second tune of regulator 20
Extrude and be connected by the trachea that external diameter is 4mm between mouth and the input port of air flow sensor 30.
Air compressor machine 10 is gas channels to the air ventilation passage of air flow sensor 30.
In another embodiment, as in figure 2 it is shown, 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 first pressure regulation that is respectively provided on two sides with of the first valve body enters
Mouthful and the first pressure regulation outlet (not shown), the first valve body is additionally provided with the first regulation portion (not shown), the first pressure regulation entrance with
Air vent connects.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 second pressure regulation that is respectively provided on two sides with of the second valve body enters
Mouthful (not shown) and the second pressure regulation outlet, the second valve body is additionally provided with the second regulation portion (not shown), the second pressure regulation entrance with
First pressure regulation outlet connects.Wherein, the second pressure regulator valve 22 is precise pressure regulating valve.
The compressed air of the 7～8MPa of air compressor machine 10 compression 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 second pressure regulation entrance of the second pressure regulator valve 22 and the first pressure regulation outlet of the first pressure regulator valve 21 connect, and adjust
Air pressure is transferred to desirable pressure by the second regulation portion 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 are adjusted to desirable pressure (also for preset air pressure), and air arrives the gas of air flow sensor 30 again through air compressor machine 10
In the gas channels that road connects, air pressure difference gradient is less, air pressure difference gradient is less allow gas channels favorite outer make mistakes general
Rate is relatively low, and it is more reasonable to design.
Further, the first pressure regulator valve 21 and the second pressure regulator valve 22 use trachea to connect, and use trachea to connect and can assist gas
The layout of the gas path pipe of paths, increases the distance that gas path pipe connects.Specifically, the second pressure regulation of the second pressure regulator valve 22 enters
It is connected by the trachea that external diameter is 4mm between mouth and the first pressure regulation outlet of the first pressure regulator valve 21.
Yet further, connected by trachea between the second pressure regulator valve 22 and air flow sensor 30, use trachea even
Connect the layout of the gas path pipe that can assist gas channels, increase the distance that gas path pipe connects.Specifically, second pressure regulator valve 22
It is connected by the trachea that external diameter is 4mm between second pressure regulation entrance and the input port of air flow sensor 30.
In another embodiment, as it is shown on figure 3, the delivery outlet of air flow sensor 30 and moving-iron receiver go out sound pipe
Trachea diameter changing device 300 is used to connect between 200.The two ends of trachea diameter changing device 300 connect air flow sensor 30 respectively
Delivery outlet and moving-iron receiver go out sound pipe 200, the layout of the gas path pipe of gas channels can be assisted, increase gas path pipe even
The distance connect, or in certain embodiments, the pressure of available buffer air flowing.
In another embodiment, as shown in Figure 4, trachea diameter changing device includes the first trachea, reducer union and the second trachea；
Wherein, one end of the first trachea connects the delivery outlet of air flow sensor, and the other end of the first trachea connects reducer union, the
What one end of two tracheas connected moving-iron receiver goes out sound pipe, and the other end of the second trachea connects reducer union.
Further, the first trachea is the trachea of external diameter 4mm.The trachea of external diameter 4mm is the one of standard trachea.
Further, the second trachea is with the trachea of internal diameter 1.2mm.The trachea of internal diameter 1.2mm is the one of standard trachea.
In another embodiment, as shown in Figure 4, processor is industrial computer, installation data interpretation software on industrial computer
The flow signal of analyzing and processing air flow sensor 30 input port and the flow signal of delivery outlet.Air flow sensor 30 is
Calculated flow rate is carried out by the difference of the pressure of input port Yu the pressure of delivery outlet.
Further, as it is shown in figure 5, described system also includes analog-to-digital conversion module 50, for by 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.
Yet further, as it is shown in figure 5, described system also includes display device 60, after treated device 40 analyzing and processing
The sealing index of moving-iron receiver is shown by display device 60, allows user can test by real time inspection in test process
Result.Display device 60 is specially non-tactile LCDs or touch screen.
Further, the flow signal of input port and the flow signal of delivery outlet are with ASCII character (American
Standard Code for Information Interchange, be called for short ASCII, ASCII) shape
Formula is transmitted.Wherein, air flow sensor 30 passes through the RS232 interface flow signal by input port and the flow signal of delivery outlet
Transfer out.
The performing leak test system of the moving-iron receiver that the embodiment of the present invention provides includes air compressor machine the 10, first pressure regulator valve
21, the second pressure regulator valve 22, air flow sensor the 30, first trachea 310, reducer union the 320, second trachea 330 and processor
40, output is to described first pressure regulator valve 21 after being compressed by air for air compressor machine 10, and the first pressure regulator valve 21 is by defeated after air pressure regulation
Going out to the second pressure regulator valve 22, after the second pressure regulator valve 22 2 times pressure regulation air makes it be depressured to preset air pressure, described air stream is arrived in output
The input port of quantity sensor 30, described moving-iron receiver go out sound pipe sounding produce sound pressure stream flow through the second trachea 330,
The delivery outlet of air flow sensor 30 is arrived in reducer union 320 and the output of the first trachea 310, and processor 40 analyzes and processes described defeated
The flow signal of entrance and the flow signal of delivery outlet, draw the sealing index of described moving-iron receiver, and analyze its sealing
The most satisfactory scope of property.The performing leak test system of the moving-iron receiver that the embodiment of the present invention provides, uses air stream
The input port of quantity sensor 30 gathers the flow signal of air input of preset air pressure, the delivery outlet of air flow sensor 30 is adopted
The flow signal going out the sound pressure stream that sound pipe sounding produces of collection moving-iron receiver, by analyzing and processing air flow sensor
The difference calculated flow rate of pressure of pressure and delivery outlet of input port, in conjunction with the preset air pressure of air and the dynamic ferrum of input port input
The audio signal that receiver receives, draws the sealing index of moving-iron receiver.The moving-iron receiver that the embodiment of the present invention provides
Performing leak test system more rigorous and practical, the sealing of various moving-iron receiver can be detected.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (10)
1. the performing leak test system of a moving-iron receiver, it is characterised in that including:
Air compressor machine, described air compressor machine is provided with air suction inlet, compression chamber and air vent；
Regulator, described regulator includes the first pressure regulation entrance and the second pressure regulation outlet, described first pressure regulation entrance and row
QI KOU connects；
Air flow sensor, described air flow sensor includes input port and delivery outlet, described input port and the second pressure regulation
Outlet connects, and described delivery outlet is connected with the sound pipe that goes out of described moving-iron receiver；
Processor, described processor is connected with air flow sensor；
Described used for air compressor output after being compressed by air arrives described regulator, and air after compression is depressured to pre-by regulator
After determining air pressure, the input port of described air flow sensor is arrived in output, the sounding going out the generation of sound pipe sounding of described moving-iron receiver
Air stream exports the delivery outlet of described air flow sensor, and processor analyzes and processes the flow signal of described input port and defeated
The flow signal of outlet, draws the sealing index of described moving-iron receiver.
2. the system as claimed in claim 1, it is characterised in that described regulator includes:
First pressure regulator valve, described first pressure regulator valve includes the first valve body, and being respectively provided on two sides with of described first valve body is described
First pressure regulation entrance and the first pressure regulation outlet, described first valve body is additionally provided with the first regulation portion, described first pressure regulation entrance
It is connected with air vent；
Second pressure regulator valve, described second pressure regulator valve includes the second valve body, described second valve body be respectively provided on two sides with second
Pressure regulation entrance and described second pressure regulation outlet, described second valve body is additionally provided with the second regulation portion, described second pressure regulation entrance
It is connected with the first pressure regulation outlet.
3. the system as claimed in claim 1, it is characterised in that the delivery outlet of described air flow sensor and moving-iron receiver
Go out between sound pipe use trachea diameter changing device connect.
4. system as claimed in claim 3, it is characterised in that described trachea diameter changing device includes the first trachea, reducer union
With the second trachea；Wherein, one end of described first trachea connects the delivery outlet of described air flow sensor, described first trachea
The other end connect reducer union, what one end of described second trachea connected described moving-iron receiver goes out sound pipe, described second gas
The other end of pipe connects reducer union.
5. system as claimed in claim 4, it is characterised in that described first trachea is the trachea of external diameter 4mm.
6. system as claimed in claim 4, it is characterised in that described second trachea is with the trachea of internal diameter 1.2mm.
7. the system as described in any one of claim 1 to 6, it is characterised in that the dynamic mass of described air flow sensor
Range of flow is 0.03-400sccm.
8. the system as described in any one of claim 1 to 6, it is characterised in that the full scale essence of described air flow sensor
Degree scope is 0.05%-1%.
9. the system as described in any one of claim 1 to 6, it is characterised in that described processor is industrial computer, described industrial computer
Upper installation data interpretation software analyzes and processes flow signal and the flow signal of delivery outlet of described input port.
10. the system as described in any one of claim 1 to 6, it is characterised in that the flow signal of described input port and delivery outlet
Flow signal transmit with the form of ASCII.
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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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| 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 true CN106303886A (en) | 2017-01-04 |
| CN106303886B CN106303886B (en) | 2019-05-17 |
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Citations (4)
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|---|---|---|---|---|
| US20090122996A1 (en) * | 2007-11-11 | 2009-05-14 | Source Of Sound Ltd. | Earplug sealing test |
| 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 |
-
2016
- 2016-10-19 CN CN201610913648.7A patent/CN106303886B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090122996A1 (en) * | 2007-11-11 | 2009-05-14 | Source Of Sound Ltd. | Earplug sealing test |
| 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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|---|---|
| CN106303886B (en) | 2019-05-17 |
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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. |
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