CN105953980A - Method for detecting sealing performance of cavity, and mobile terminal - Google Patents
Method for detecting sealing performance of cavity, and mobile terminal Download PDFInfo
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- CN105953980A CN105953980A CN201610280334.8A CN201610280334A CN105953980A CN 105953980 A CN105953980 A CN 105953980A CN 201610280334 A CN201610280334 A CN 201610280334A CN 105953980 A CN105953980 A CN 105953980A
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- electroacoustic
- cavity
- monomer
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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
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Abstract
The invention provides a method for detecting the sealing performance of a cavity, and a mobile terminal. The method is applied to the mobile terminal. The mobile terminal comprises the cavity, an electroacoustic unit arranged in the cavity and an audio output member electrically connected with the electroacoustic unit. The method comprises the steps of: inputting a control signal to the audio output member, and enabling the audio output member to output frequency sweep signals with different frequency values according to a preset time interval; obtaining the input voltages of the electroacoustic unit when the frequency sweep signals act on the electroacoustic unit; according to the input voltages, determining a resonance frequency point of the cavity; and determining the sealing performance of the cavity according to the resonance frequency point. According to the invention, the detection is carried out by the mobile terminal itself, no specific testing device and testing environment are needed, dismounting is not needed, and the problems in the prior art that the detection process is tedious and requirements of large-batch rapid detection cannot be met are solved.
Description
Technical field
The present invention relates to the detection field of mobile terminal, particularly relate to a kind of test chamber sealing method and
Mobile terminal.
Background technology
Electro-acoustic element on mobile terminal needs to be coordinated could normally be worked by cavity more at present, so cavity
Sealing it is critical that.But, owing to respective outer side edges is bad, manual dress in actual production process
Join the problem such as error, material aging and frequently can lead to cavity leakage.Wherein, cavity is revealed and sound will be caused low
Frequently, there is the problem such as noise and trill in distortion.The method of test chamber sealing needs to tear machine fly line open at present,
Not only test process is loaded down with trivial details, and machine of repeatedly tearing open easily causes structural damage, and easily produces detection error.
It addition, this kind of detection needs special detection equipment and detection environment, and professional operator, detection speed
Degree is slow, it is impossible to meets the demand of high-volume quickly detection, and judges to hold by the method that testing staff is subjective
Missing inspection and flase drop easily occur.
Summary of the invention
The purpose of the embodiment of the present invention is to provide method and the mobile terminal of a kind of test chamber sealing, with
Solve that prior art detects process loaded down with trivial details, it is impossible to meet high-volume and quickly detect the technical problem of demand.
An aspect according to the embodiment of the present invention, it is provided that a kind of method of test chamber sealing, application
In mobile terminal, described mobile terminal includes cavity, the electroacoustic monomer that is arranged in described cavity and with institute
State the audio frequency output element of electroacoustic monomer electrical connection；
Described method includes:
Control signal is inputted, when making described audio frequency output element according to predetermined interval to described audio frequency output element
Between export different frequency value swept-frequency signal；
Obtain the input voltage of described electroacoustic monomer when described swept-frequency signal acts on described electroacoustic monomer；
According to described input voltage, determine the resonance frequency of described cavity；
According to described resonance frequency, determine the sealing of described cavity.
According to another aspect of the embodiment of the present invention, additionally provide a kind of mobile terminal, described mobile terminal
The electroacoustic monomer that including cavity, is arranged in described cavity and defeated with the audio frequency that described electroacoustic monomer electrically connects
Go out element；
Described mobile terminal also includes:
Control module, for inputting control signal to described audio frequency output element, makes described audio frequency output element
Swept-frequency signal according to preset interval time output different frequency value；
Acquisition module, is used for obtaining described electroacoustic monomer when described swept-frequency signal acts on described electroacoustic monomer
Input voltage；
Resonance frequency determines module, for the described input voltage obtained according to described acquisition module, determines institute
State the resonance frequency of cavity；
Judge module, for determining, according to described resonance frequency, the described resonance frequency that module determines, determines institute
State the sealing of cavity.
The embodiment of the present invention provides the benefit that:
The method of the test chamber sealing of the embodiment of the present invention, utilizes mobile terminal self, to its inside
Audio frequency output element input control signal so that this audio frequency output element is according to preset interval time output difference
The swept-frequency signal of frequency values, thus obtain the defeated of this electroacoustic monomer when this swept-frequency signal is applied on electroacoustic monomer
Enter voltage, and determine the resonance frequency of cavity according to this input voltage, and then sentence according to the resonance frequency determined
The sealing of the cavity of this mobile terminal disconnected.Therefore, the method for the test chamber sealing of the embodiment of the present invention,
Utilize mobile terminal self to detect, it is not necessary to specific test equipment and test environment, and need not tear open
Machine, detection speed is fast, and testing result error is little, solves detection process in prior art loaded down with trivial details, Yi Jiwu
Method meets the problem that high-volume quickly detects demand.
Accompanying drawing explanation
Fig. 1 represents the method flow diagram of the test chamber sealing of first embodiment of the invention；
Fig. 2 represents the method flow diagram of the test chamber sealing of second embodiment of the invention；
Fig. 3 represents the principle schematic of the resistance value determining electroacoustic monomer in second embodiment of the invention；
Fig. 4 represents the concrete applicating flow chart of the method for test chamber sealing in second embodiment of the invention；
One of Fig. 5 structured flowchart of mobile terminal representing third embodiment of the invention；
Fig. 6 represents the two of the structured flowchart of the mobile terminal of third embodiment of the invention；
Fig. 7 represents the structured flowchart of the mobile terminal of fourth embodiment of the invention；
Fig. 8 represents the structured flowchart of the mobile terminal of fifth embodiment of the invention.
Detailed description of the invention
It is more fully described the exemplary embodiment of the disclosure below with reference to accompanying drawings.Although accompanying drawing shows
The exemplary embodiment of the disclosure, it being understood, however, that may be realized in various forms the disclosure and should be by
Embodiments set forth here is limited.On the contrary, it is provided that these embodiments are able to be best understood from this
Open, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.
Embodiments of the invention are loaded down with trivial details for the cavity detection process of mobile terminal in prior art, and cannot
Meet the problem that high-volume quickly detects demand, it is provided that a kind of method of test chamber sealing, utilize and move
Dynamic terminal self detects, it is not necessary to specific test equipment and test environment, and need not tear open machine, inspection
Degree of testing the speed is fast, and testing result error is little, it is possible to meet the demand of high-volume quickly detection.
First embodiment
As it is shown in figure 1, the method for this test chamber sealing includes:
Step 101, to described audio frequency output element input control signal, make described audio frequency output element according to
The swept-frequency signal of preset interval time output different frequency value.
The method of the test chamber sealing of the embodiment of the present invention, is applied to mobile terminal, and this mobile terminal can
To be the electronic equipment such as mobile phone, panel computer.Wherein, above-mentioned mobile terminal includes cavity, is arranged at this chamber
Internal electroacoustic monomer and the audio frequency output element electrically connected with this electroacoustic monomer.
Wherein, the loudspeaker of electroacoustic monomer concretely mobile terminal, audio frequency output element is concretely mobile whole
The loudspeaker power amplifier of end.This mobile terminal, when actually used, controls loudspeaker power amplifier by its internal processor
The voltage signal of output different capacity, and be applied on loudspeaker so that loudspeaker convert electric energy to acoustic energy, from
And send sound.
So, in an embodiment of the present invention, it is possible to use the internal existing circuit connection structure of mobile terminal,
Carry out the sealing of test chamber.I.e. input a control signal to audio frequency output element so that the output of this audio frequency is first
Part can be according to the swept-frequency signal of preset interval time output different frequency value.Owing to electroacoustic monomer is defeated with audio frequency
Go out element electrical connection, so, the swept-frequency signal of audio frequency output element output can be applied on electroacoustic monomer.
Wherein, swept-frequency signal is the constant-amplitude signal of frequency mechanical periodicity within the specific limits, and frequency sweep is to survey
Try and design.In embodiments of the invention, the swept frequency range of swept-frequency signal may be configured as 200 hertz (Hz)
-1.5 KHz (KHz), are spaced apart mono-test point of 50Hz, and i.e. every preset interval time, audio frequency is defeated
Go out the voltage signal of element output corresponding frequencies value, and the voltage letter in the most adjacent two preset interval time sections
Number frequency value difference 50Hz.
Step 102, obtain the defeated of described electroacoustic monomer when described swept-frequency signal acts on described electroacoustic monomer
Enter voltage.
In a step 101, the swept-frequency signal of the different frequency value of audio frequency output element output, for pulse width
Modulation (Pulse Width Modulation, PWM) signal.So when this swept-frequency signal is applied to electroacoustic
Time on monomer, the input signal of this electroacoustic monomer is similarly pwm signal.
It addition, inside mobile terminal, be provided with the sample circuit in parallel with electroacoustic monomer, this sample circuit
Including low-pass filter circuit and analog to digital conversion circuit.Wherein, this low-pass filter circuit first will be from electroacoustic monomer
The pwm signal of input collection be filtered, be converted to analogue signal, pass through analog digital conversion the most again
Circuit conversion is digital signal, in order to the input voltage of the electroacoustic monomer that later use obtains carries out relevant fortune
Calculate.
Wherein, above-mentioned audio frequency output element exports the swept-frequency signal of different frequency value according to preset interval time,
Then sample circuit can gather electroacoustic monomer input voltage at respective frequencies point within the corresponding time period, i.e. adopts
Sample circuit gathers the input voltage of an electroacoustic monomer at each Frequency point.
Step 103, according to described input voltage, determine the resonance frequency of described cavity.
In the embodiment of the present invention, electroacoustic monomer and cavity at mobile terminal seal laggard an actor's rendering of an operatic tune health check-up and survey.Its
In, owing to the electroacoustic monomer from cavity fitted seal has different impedances at different Frequency points, so,
When the swept-frequency signal of different frequency value is applied on electroacoustic monomer, this electroacoustic monomer has different input voltages.
Wherein, electroacoustic monomer is the highest at the resistance value of resonance frequency, and the resistance value of electroacoustic monomer can be by obtaining
Input voltage determine, so, can determine the resistance value of electroacoustic monomer according to input voltage, so according to
Resistance value finds resonance frequency.
Step 104, according to described resonance frequency, determine the sealing of described cavity.
Wherein, when cavity good seal, in the range of resonance frequency can be in specifically.When occurring that cavity is let out
During leakage, resonance frequency can substantially reduce.Therefore, the sealing of cavity can be judged according to resonance frequency, i.e.
Judge whether cavity is in leak condition.
In embodiments of the invention, utilize its existing circuit connection structure by mobile terminal self, control
The swept-frequency signal whether output of audio frequency output element leaks for test chamber, and obtain this swept-frequency signal effect
Time on electroacoustic monomer, the input voltage of this electroacoustic monomer, thus the resonance of cavity is determined according to input voltage
Frequency, and then the sealing of cavity is judged according to resonance frequency.Therefore, the test chamber of the embodiment of the present invention
The method of sealing, it is not necessary to specific test equipment and test environment, and need not tear open machine, detect speed
Hurry up, testing result error is little, solves test process in prior art loaded down with trivial details, it is impossible to meet high-volume quickly
The problem of detection demand.
Second embodiment
As in figure 2 it is shown, the method for this test chamber sealing includes:
Step 201, to described audio frequency output element input control signal, make described audio frequency output element according to
The swept-frequency signal of preset interval time output different frequency value.
The method of the test chamber sealing of the embodiment of the present invention, is applied to mobile terminal, and this mobile terminal can
To be the electronic equipment such as mobile phone, panel computer.Wherein, above-mentioned mobile terminal includes cavity, is arranged at this chamber
Internal electroacoustic monomer and the audio frequency output element electrically connected with this electroacoustic monomer.
Wherein, the loudspeaker of electroacoustic monomer concretely mobile terminal, audio frequency output element is concretely mobile whole
The loudspeaker power amplifier of end.This mobile terminal, when actually used, controls loudspeaker power amplifier by its internal processor
The voltage signal of output different capacity, and be applied on loudspeaker so that loudspeaker convert electric energy to acoustic energy, from
And send sound.
So, in an embodiment of the present invention, it is possible to use the internal existing circuit connection structure of mobile terminal,
Carry out test chamber leakage.I.e. input a control signal to audio frequency output element so that this audio frequency output element can
With the swept-frequency signal according to preset interval time output different frequency value.Owing to electroacoustic monomer is first with audio frequency output
Part electrically connects, so, the swept-frequency signal of audio frequency output element output can be applied on electroacoustic monomer.
Wherein, swept-frequency signal is the constant-amplitude signal of frequency mechanical periodicity within the specific limits, and frequency sweep is to survey
Try and design.In embodiments of the invention, the swept frequency range of swept-frequency signal may be configured as 200Hz-1.5KHz,
It is spaced apart mono-test point of 50Hz, i.e. every preset interval time, audio frequency output element output corresponding frequencies
The voltage signal of value, and the frequency value difference of the voltage signal in the most adjacent two preset interval time sections
50Hz。
Step 202, obtain the defeated of described electroacoustic monomer when described swept-frequency signal acts on described electroacoustic monomer
Enter voltage.
In step 201, the swept-frequency signal of the different frequency value of audio frequency output element output, believe for PWM
Number.So when this swept-frequency signal is applied on electroacoustic monomer, the input signal of this electroacoustic monomer is similarly
Pwm signal.
It addition, inside mobile terminal, be provided with the sample circuit in parallel with electroacoustic monomer, this sample circuit
Including low-pass filter circuit and analog to digital conversion circuit.Wherein, this low-pass filter circuit first will be from electroacoustic monomer
The pwm signal of input collection be filtered, be converted to analogue signal, pass through analog digital conversion the most again
Circuit conversion is digital signal, in order to the input voltage of the electroacoustic monomer that later use obtains carries out relevant fortune
Calculate.
Wherein, above-mentioned audio frequency output element exports the swept-frequency signal of different frequency value according to preset interval time,
Then sample circuit can gather electroacoustic monomer input voltage at respective frequencies point within the corresponding time period, i.e. adopts
Sample circuit gathers the input voltage of an electroacoustic monomer at each Frequency point.
Step 203, according to described input voltage, determine the impedance at different frequency value of the described electroacoustic monomer
Value.
Specifically, step 203 includes:
Obtain line impedance R1 between described audio frequency output element and described electroacoustic monomer；
According to described input voltage U1, described line impedance R1 and formula R=U1*R1/ (U-U1), really
Fixed described electroacoustic monomer resistance value R at different frequency value, wherein, U represents described audio frequency output element
The magnitude of voltage of the described swept-frequency signal of the different frequency value of output.
Wherein, the principle of resistance value of electroacoustic monomer is determined according to input voltage as shown in Figure 3.Mobile whole
End is internal, and audio frequency output element is electrically connected with electroacoustic monomer by circuit, and sample circuit is in parallel with electroacoustic monomer.
Therefore, according to the electric current same principle on same path, it can be deduced that equation below:
(U-U1)/(R2+R3)=U1/R
Wherein, U represents the magnitude of voltage of the described swept-frequency signal of the different frequency value that audio frequency output element exports,
For pre-setting value；U1 represents the input voltage of electroacoustic monomer, sample circuit obtain；R2 and R3 divides
Not Biao Shi line impedance between audio frequency output element and electroacoustic monomer, it can be surveyed according to the type of mobile terminal
Examination or emulation obtain.Therefore, above-mentioned formula may determine that to above-mentioned electroacoustic monomer input different frequency value
Swept-frequency signal time above-mentioned electroacoustic monomer resistance value R=U1* (R2+R3)/(U-U1).Wherein, R2
Can represent with R1 with R3 sum, then R=U1*R1/ (U-U1).
It addition, when the input voltage using sample circuit to obtain electroacoustic monomer, owing to sample circuit cabling is same
Sample has blocked impedance, so after in parallel with electroacoustic monomer, calculating the impedance of the electroacoustic monomer obtained with actual
There is certain error between the impedance of electroacoustic monomer, but the impedance relative sample circuit impedance of electroacoustic monomer is very
Greatly, so overall impedance variation tendency is identical, the determination to resonance frequency is not interfered with.
Step 204, from described resistance value, select maximum impedance value.
In the embodiment of the present invention, electroacoustic monomer and cavity at mobile terminal seal laggard an actor's rendering of an operatic tune health check-up and survey.Its
In, at different Frequency points there is different impedances from the electroacoustic monomer of cavity fitted seal, and this electroacoustic
Monomer resistance value at resonance frequency is maximum, it is therefore desirable to each resistance value determined from step 203
In select maximum impedance value, in order to frequency values corresponding for maximum impedance value is defined as the resonance frequency of cavity.
Step 205, frequency values corresponding with described maximum impedance value in described swept-frequency signal is defined as described
Resonance frequency.
After selecting maximum impedance value by step 204, can by swept-frequency signal with this maximum impedance value pair
The frequency values answered is defined as resonance frequency.
Step 206, according to described resonance frequency, determine the sealing of described cavity.
Wherein, when cavity good seal, in the range of resonance frequency can be in specifically.When occurring that cavity is let out
During leakage, resonance frequency can substantially reduce.Therefore, the sealing of cavity can be judged according to resonance frequency.
Specifically, step 206 includes:
Within judging whether described resonance frequency is positioned at default span；
If described resonance frequency is less than the lower limit of described default span, it is determined that described cavity is in be let out
Leakage state.
Wherein, default span includes lower limit and higher limit, if resonance frequency is less than lower limit, then chamber
Body leaks；If resonance frequency is more than higher limit, then it is plugged at the sounding of electroacoustic monomer；If resonance frequency position
Between lower limit and higher limit, within being i.e. in default span, then cavity does not leaks.
It addition, after the cavity leakage of some mobile terminal, the skew of resonance frequency is the least, only according to resonance
Frequency cannot accurately judge whether this type of cavity is in leak condition.So, step 206 judge described humorous
After whether the frequency that shakes is positioned at the step within default span, need to farther include:
If within described resonance frequency is positioned at described default span, then according to described resonance frequency, determine
The intrinsic coefficient of described cavity；
Judge that whether described intrinsic coefficient is less than predetermined threshold value；
If described intrinsic coefficient is less than described predetermined threshold value, it is determined that described cavity is in leak condition；
If described intrinsic coefficient is more than described predetermined threshold value, it is determined that described cavity is in non-leak condition.
In embodiments of the invention, after resonance frequency is judged, further determine that the intrinsic of cavity
Coefficient, and judge that whether intrinsic coefficient is more than predetermined threshold value so that the detection for cavity sealing is more smart
Accurate.
Wherein, above-mentioned intrinsic coefficient can be according to resonance frequency F0 and formula Q=(ZF0-ZX)/(F0-X)
Obtain.Wherein, ZF0Representing described electroacoustic monomer resistance value at described resonance frequency, X represents default
Reference frequency point, such as 200Hz, ZXRepresent the impedance at described preset reference frequency of the described electroacoustic monomer
Value.
Wherein, for mobile terminal, a detection switch can be set, when this detection switch is opened, perform
The method of above-mentioned test chamber sealing, thus draw testing result, i.e. cavity are in leak condition or not
Leak condition.
To sum up, the method for the test chamber sealing of the embodiment of the present invention, when being specifically applied on mobile terminal,
Execution process is as shown in Figure 4.After starting detection, the loudspeaker power amplifier output swept-frequency signal of mobile terminal is given to chamber
Body, sample circuit carries out signal of telecommunication sampling, obtains the input voltage of electroacoustic monomer, and then according to input voltage
The resonance frequency of calculating acquisition cavity, then, it is judged that within whether resonance frequency is positioned at default span,
If it is not, then cavity leakage；The most then need to calculate further the intrinsic coefficient of cavity, and then judge intrinsic system
Whether number is more than predetermined threshold value, if being more than, then cavity is normal, if less than, cavity leakage.
Wherein, the default span of above-mentioned resonance frequency and the predetermined threshold value of intrinsic coefficient can be tried according to reality
Test data to be determined.Therefore, the default span of above-mentioned resonance frequency and the default threshold of intrinsic coefficient
Value can be modified according to the actual model of mobile terminal, so that the test chamber of the embodiment of the present invention seals
The method of property, is applicable to various mobile terminal, or the detection demand of various project.
In embodiments of the invention, utilize its existing circuit connection structure by mobile terminal self, control
The swept-frequency signal whether output of audio frequency output element leaks for test chamber, and obtain this swept-frequency signal effect
Time on electroacoustic monomer, the input voltage of this electroacoustic monomer, thus determine this electroacoustic monomer according to input voltage
Resistance value, and frequency values corresponding for maximum impedance value is defined as resonance frequency, and then according to resonance frequency
Judge the sealing of cavity.Therefore, the method for the test chamber sealing of the embodiment of the present invention, it is not necessary to specific
Test equipment and test environment, and need not tear open machine, detection speed is fast, and testing result error is little, solves
In prior art of having determined, test process is loaded down with trivial details, and cannot meet the problem that high-volume quickly detects demand.
3rd embodiment
The embodiment of the present invention additionally provides a kind of mobile terminal, and described mobile terminal includes cavity, is arranged at institute
State the electroacoustic monomer in cavity and the audio frequency output element electrically connected with described electroacoustic monomer.Wherein, this shifting
Dynamic terminal can be the intelligent electronic devices such as mobile phone, flat board, notebook computer, as it is shown in figure 5, this moves
Terminal 500 also includes:
Control module 501, for inputting control signal to described audio frequency output element, makes described audio frequency export
Element is according to the swept-frequency signal of preset interval time output different frequency value；
Acquisition module 502, is used for obtaining described swept-frequency signal and acts on described electroacoustic time on described electroacoustic monomer
The input voltage of monomer；
Resonance frequency determines module 503, for the described input voltage obtained according to described acquisition module 502,
Determine the resonance frequency of described cavity；
Judge module 504, for determining, according to described resonance frequency, the described resonance frequency that module 503 determines,
Determine the sealing of described cavity.
Preferably, as shown in Figure 6, described resonance frequency determines that module 503 includes:
Impedance acquiring unit 5031, for according to described input voltage, determines that described electroacoustic monomer is in difference
Resistance value at frequency values；
Select unit 5032, for selecting from the described resistance value that described impedance acquiring unit 5031 obtains
Maximum impedance value；
Resonance frequency determines unit 5033, for by corresponding with described maximum impedance value in described swept-frequency signal
Frequency values be defined as described resonance frequency.
Preferably, as shown in Figure 6, described impedance acquiring unit 5031 includes:
Obtain subelement 50311, for obtaining the line between described audio frequency output element and described electroacoustic monomer
The anti-R1 of roadlock；
Computation subunit 50312, for according to described input voltage U1, described line impedance R1 and public affairs
Formula R=U1*R1/ (U-U1), determines described electroacoustic monomer resistance value R at different frequency value, wherein,
U represents the magnitude of voltage of the described swept-frequency signal of the different frequency value that described audio frequency output element exports.
Preferably, as shown in Figure 6, described judge module 504 includes:
First judging unit 5041, within being used for judging whether described resonance frequency is positioned at default span；
First determines unit 5042, for judging that described resonance frequency is little when described first judging unit 5041
When the lower limit of described default span, determine that described cavity is in leak condition.
Preferably, as shown in Figure 6, described judge module 504 also includes:
Intrinsic factor determination unit 5043, for judging described resonance frequency when described first judging unit 5041
When point is positioned within described default span, determine the intrinsic coefficient of described cavity according to described resonance frequency；
Second judging unit 5044, described solid for judging that described intrinsic factor determination unit 5043 determines
Whether there is coefficient less than predetermined threshold value；
Second determines unit 5045, for judging that described intrinsic coefficient is little when described second judging unit 5044
When described predetermined threshold value, determine that described cavity is in leak condition；
3rd determines unit 5046, for judging that described intrinsic coefficient is big when described second judging unit 5044
When described predetermined threshold value, determine that described cavity is in non-leak condition.
Preferably, described intrinsic factor determination unit 5043 specifically for:
According to described resonance frequency F0 and formula Q=(ZF0-ZX)/(F0-X), determine described intrinsic coefficient,
Wherein, ZF0Representing described electroacoustic monomer resistance value at described resonance frequency, X represents preset reference frequency
Point, ZXRepresent described electroacoustic monomer resistance value at described preset reference frequency.
Mobile terminal 400 is capable of each mistake that in the embodiment of the method for Fig. 1 to Fig. 2, mobile terminal realizes
Journey, for avoiding repeating, repeats no more here.
The mobile terminal 500 of the embodiment of the present invention, by control module 501 to the input control of audio frequency output element
Signal processed so that audio frequency output element exports the swept-frequency signal of different frequency value according to preset interval time, from
And by acquisition module 502 obtain this swept-frequency signal be applied on electroacoustic monomer time, the input of this electroacoustic monomer
Voltage, and then determine that module 503 determines resonance frequency according to the input voltage obtained by resonance frequency,
After, determined the sealing of cavity according to resonance frequency by judge module 504.So, the embodiment of the present invention
Mobile terminal 500, when carrying out cavity performing leak test, it is not necessary to specific test equipment and test environment,
And need not tear open machine, detection speed is fast, and testing result error is little, solves test process in prior art
Loaded down with trivial details, and the problem that high-volume quickly detects demand cannot be met.
4th embodiment
Fig. 7 is the block diagram of the mobile terminal of another embodiment of the present invention.Specifically, the mobile end in Fig. 7
End 700 can be mobile phone, panel computer, personal digital assistant (Personal Digital Assistant, PDA),
Or vehicle-mounted computer etc..
Mobile terminal 700 shown in Fig. 7 includes: at least one processor 701, memorizer 702, at least
One network interface 704, other user interfaces 703 and audio frequency module 706, this audio frequency module 706 includes
Cavity, the electroacoustic monomer being arranged in described cavity and the audio frequency output electrically connected with described electroacoustic monomer are first
Part.Each assembly in mobile terminal 700 is coupled by bus system 705.It is understood that bus
System 705 is for realizing the connection communication between these assemblies.Bus system 705 except include data/address bus it
Outward, also include power bus, control bus and status signal bus in addition.But for the sake of understanding explanation,
Various buses are all designated as bus system 705 by Fig. 7.
Wherein, user interface 703 can include display, keyboard or pointing device.Such as, mouse,
Trace ball (trackball), touch-sensitive plate or touch screen etc..
The memorizer 702 being appreciated that in the embodiment of the present invention can be volatile memory or non-volatile
Memorizer, maybe can include volatibility and nonvolatile memory.Wherein, nonvolatile memory is permissible
It is read only memory (Read-Only Memory, ROM), programmable read only memory (Programmable
ROM, PROM), Erasable Programmable Read Only Memory EPROM (Erasable PROM, EPROM), electricity can
Erasable programmable read-only memory (EPROM) (Electrically EPROM, EEPROM) or flash memory.Volatibility is deposited
Reservoir can be random access memory (Random Access Memory, RAM), and it is used as outside high
Speed caching.By exemplary but be not restricted explanation, the RAM of many forms can use, such as static with
Machine access memorizer (Static RAM, SRAM), dynamic random access memory (Dynamic RAM,
DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double number
According to synchronization of rate dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM),
Enhancement mode Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronized links
Dynamic random access memory (Synchlink DRAM, SLDRAM) and direct rambus are deposited at random
Access to memory (Direct Rambus RAM, DRRAM).The memorizer of system and method described herein
702 are intended to include but not limited to these and the memorizer of other applicable type any.
In some embodiments, memorizer 702 stores following element, executable module or data
Structure, or their subset, or their superset: operating system 7021 and application program 7022.
Wherein, operating system 7021, comprise various system program, such as ccf layer, core library layer, drive
Dynamic layers etc., are used for realizing various basic business and processing hardware based task.Application program 7022,
Comprise various application program, such as media player (Media Player), browser (Browser) etc.,
For realizing various applied business.The program realizing embodiment of the present invention method may be embodied in application program
In 7022.
In embodiments of the present invention, by calling program or the instruction of memorizer 702 storage, concrete, can
To be program or the instruction of storage in application program 7022, first to the output of described audio frequency by processor 701
Part input control signal, makes described audio frequency output element sweeping according to preset interval time output different frequency value
Frequently signal, then obtains the input of described electroacoustic monomer when described swept-frequency signal acts on described electroacoustic monomer
Voltage, thus according to described input voltage, determine the resonance frequency of described cavity, and then according to described resonance
Frequency, determines the sealing of described cavity.
The method that the invention described above embodiment discloses can apply in processor 701, or by processor
701 realize.Processor 701 is probably a kind of IC chip, has the disposal ability of signal.In reality
During Xian, each step of said method can by the integrated logic circuit of the hardware in processor 701 or
The instruction of person's software form completes.Above-mentioned processor 701 can be general processor, Digital Signal Processing
Device (Digital Signal Processor, DSP), special IC (Application Specific Integrated
Circuit, ASIC), ready-made programmable gate array (Field Programmable Gate Array, FPGA)
Or other PLDs, discrete gate or transistor logic, discrete hardware components.Permissible
Realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.General processor
Can be microprocessor or this processor can also be the processor etc. of any routine.Implement in conjunction with the present invention
The step of the method disclosed in example can be embodied directly in hardware decoding processor and perform, or with decoding
Hardware and software module combination execution in processor complete.Software module may be located at random access memory, dodges
Deposit, read only memory, programmable read only memory or electrically erasable programmable memorizer, depositor etc. this
In the storage medium that field is ripe.This storage medium is positioned at memorizer 702, and processor 701 reads memorizer
Information in 702, completes the step of said method in conjunction with its hardware.
It is understood that embodiments described herein can use hardware, software, firmware, middleware,
Microcode or a combination thereof realize.Realizing for hardware, processing unit can be implemented in one or more special collection
Become circuit (Application Specific Integrated Circuits, ASIC), digital signal processor (Digital
Signal Processing, DSP), digital signal processing appts (DSP Device, DSPD), able to programme
Logical device (Programmable Logic Device, PLD), field programmable gate array
(Field-Programmable Gate Array, FPGA), general processor, controller, microcontroller,
Microprocessor, for performing in other electronic unit or a combination thereof of herein described function.
Software is realized, can be come by the module (such as process, function etc.) performing function described herein
Realize the techniques described herein.Software code is storable in performing in memorizer and by processor.Memorizer
Can within a processor or realize outside processor.
Preferably, processor 701 is according to described input voltage, when determining the resonance frequency of described cavity,
Specifically for:
According to described input voltage, determine described electroacoustic monomer resistance value at different frequency value；
Maximum impedance value is selected from described resistance value；
Frequency values corresponding with described maximum impedance value in described swept-frequency signal is defined as described resonance frequency.
Preferably, processor 701, according to described input voltage, determines that described electroacoustic monomer is at different frequency
During resistance value at value, specifically for:
Obtain line impedance R1 between described audio frequency output element and described electroacoustic monomer；
According to described input voltage U1, described line impedance R1 and formula R=U1*R1/ (U-U1), really
Fixed described electroacoustic monomer resistance value R at different frequency value, wherein, U represents described audio frequency output element
The magnitude of voltage of the described swept-frequency signal of the different frequency value of output.
Preferably, processor 701, according to described resonance frequency, when determining the sealing of described cavity, has
Body is used for:
Within judging whether described resonance frequency is positioned at default span；
If described resonance frequency is less than the lower limit of described default span, it is determined that described cavity is in be let out
Leakage state.
Preferably, processor 701 is judging the step within whether described resonance frequency is positioned at default span
After Zhou, it is additionally operable to:
If within described resonance frequency is positioned at described default span, then according to described resonance frequency, determine
The intrinsic coefficient of described cavity；
Judge that whether described intrinsic coefficient is less than predetermined threshold value；
If described intrinsic coefficient is less than described predetermined threshold value, it is determined that described cavity is in leak condition；
If described intrinsic coefficient is more than described predetermined threshold value, it is determined that described cavity is in non-leak condition.
Preferably, processor 701 is according to described resonance frequency, when determining the intrinsic coefficient of described cavity,
Specifically for:
According to described resonance frequency F0 and formula Q=(ZF0-ZX)/(F0-X), determine described intrinsic coefficient,
Wherein, ZF0Representing described electroacoustic monomer resistance value at described resonance frequency, X represents preset reference frequency
Point, ZXRepresent described electroacoustic monomer resistance value at described preset reference frequency.
Mobile terminal 700 is capable of each process that in previous embodiment, mobile terminal realizes, for avoiding weight
Multiple, repeat no more here.
The mobile terminal 700 of the embodiment of the present invention, self utilizes its existing circuit by mobile terminal 700
Attachment structure, controls the swept-frequency signal whether output of audio frequency output element leaks for test chamber, and obtains
When this swept-frequency signal is applied on electroacoustic monomer, the input voltage of this electroacoustic monomer, thus according to input voltage
Determine the resistance value of this electroacoustic monomer, and frequency values corresponding for maximum impedance value is defined as resonance frequency, enter
And the sealing of cavity is judged according to resonance frequency.Therefore, the mobile terminal 700 of the embodiment of the present invention,
When carrying out cavity test, it is not necessary to specific test equipment and test environment, and need not tear open machine, detection speed
Degree is fast, and testing result error is little, solves test process in prior art loaded down with trivial details, and cannot meet large quantities of
The problem that amount quickly detects demand.
5th embodiment
Fig. 8 is the structured flowchart of the mobile terminal of another embodiment of the present invention.Specifically, the shifting in Fig. 8
Dynamic terminal 800 can be mobile phone, panel computer, personal digital assistant (Personal Digital Assistant,
Or vehicle-mounted computer etc. PDA).
Mobile terminal 800 in Fig. 8 includes radio frequency (Radio Frequency, RF) circuit 810, storage
Device 820, input block 830, display unit 840, processor 860, audio frequency module 850, voicefrequency circuit
870, WiFi (Wireless Fidelity) module 880 and power supply 890, wherein, this audio frequency module 850
The electroacoustic monomer that including cavity, is arranged in described cavity and defeated with the audio frequency that described electroacoustic monomer electrically connects
Go out element.
Wherein, input block 830 can be used for receive user input numeral or character information, and produce with
The user setup of mobile terminal 800 and function control relevant signal input.Specifically, the present invention implements
In example, this input block 830 can include contact panel 831.Contact panel 831, also referred to as touch screen,
Can collect user thereon or neighbouring touch operation (such as user uses finger, stylus etc. any applicable
Object or adnexa operation on contact panel 831), and connect accordingly according to formula set in advance driving
Connection device.
Optionally, contact panel 831 can include touch detecting apparatus and two parts of touch controller.Wherein,
The touch orientation of touch detecting apparatus detection user, and detect the signal that touch operation brings, by signal transmission
To touch controller；Touch controller receives touch information from touch detecting apparatus, and is converted into touching
Point coordinates, then give this processor 860, and order that processor 860 sends can be received and performed.
Furthermore, it is possible to use the polytypes such as resistance-type, condenser type, infrared ray and surface acoustic wave to realize touch surface
Plate 831.Except contact panel 831, input block 830 can also include other input equipments 832, its
His input equipment 832 can include but not limited to that physical keyboard, function key (such as volume control button, are opened
Close button etc.), trace ball, mouse, one or more in action bars etc..
Wherein, display unit 840 can be used for the information that inputted by user of display or the information that is supplied to user with
And the various menu interfaces of mobile terminal 800.Display unit 840 can include display floater 841, optionally,
LCD or Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) etc. can be used
Form configures display floater 841.
It should be noted that contact panel 831 can cover display floater 841, formed and touch display screen, when this touches
Touch display screen detect thereon or after neighbouring touch operation, send processor 860 to determine touch thing
The type of part, regards touching to provide on display screen according to the type of touch event accordingly with preprocessor 860
Feel and export.
Touch display screen and include Application Program Interface viewing area and conventional control viewing area.This Application Program Interface
The arrangement mode of viewing area and this conventional control viewing area does not limit, can be arranged above and below, left-right situs
Etc. the arrangement mode that can distinguish two viewing areas.This Application Program Interface viewing area is displayed for application
The interface of program.Each interface can comprise icon and/or the widget desktop of at least one application program
The interface elements such as control.This Application Program Interface viewing area can also be the empty interface not comprising any content.
This conventional control viewing area is for showing the control that utilization rate is higher, such as, settings button, interface numbering,
The application icons etc. such as scroll bar, phone directory icon.
Wherein processor 860 is the control centre of mobile terminal 800, utilizes various interface and connection whole
The various piece of individual mobile phone, by run or perform the software program that is stored in first memory 821 and/
Or module, and call the data being stored in second memory 822, perform the various of mobile terminal 800
Function and process data, thus mobile terminal 800 is carried out integral monitoring.Optionally, processor 860
One or more processing unit can be included.
In embodiments of the present invention, input control signal by processor 860 to described audio frequency output element,
Make described audio frequency output element according to the swept-frequency signal of preset interval time output different frequency value, then obtain
Described swept-frequency signal is the input voltage of described electroacoustic monomer when acting on described electroacoustic monomer, thus according to institute
State input voltage, determine the resonance frequency of described cavity, and then according to described resonance frequency, determine described chamber
The sealing of body.
Preferably, processor 860 is according to described input voltage, when determining the resonance frequency of described cavity,
Specifically for:
According to described input voltage, determine described electroacoustic monomer resistance value at different frequency value；
Maximum impedance value is selected from described resistance value；
Frequency values corresponding with described maximum impedance value in described swept-frequency signal is defined as described resonance frequency.
Preferably, processor 860, according to described input voltage, determines that described electroacoustic monomer is at different frequency
During resistance value at value, specifically for:
Obtain line impedance R1 between described audio frequency output element and described electroacoustic monomer；
According to described input voltage U1, described line impedance R1 and formula R=U1*R1/ (U-U1), really
Fixed described electroacoustic monomer resistance value R at different frequency value, wherein, U represents described audio frequency output element
The magnitude of voltage of the described swept-frequency signal of the different frequency value of output.
Preferably, processor 860, according to described resonance frequency, when determining the sealing of described cavity, has
Body is used for:
Within judging whether described resonance frequency is positioned at default span；
If described resonance frequency is less than the lower limit of described default span, it is determined that described cavity is in be let out
Leakage state.
Preferably, processor 860 is judging the step within whether described resonance frequency is positioned at default span
After Zhou, it is additionally operable to:
If within described resonance frequency is positioned at described default span, then according to described resonance frequency, determine
The intrinsic coefficient of described cavity；
Judge that whether described intrinsic coefficient is less than predetermined threshold value；
If described intrinsic coefficient is less than described predetermined threshold value, it is determined that described cavity is in leak condition；
If described intrinsic coefficient is more than described predetermined threshold value, it is determined that described cavity is in non-leak condition.
Preferably, processor 860 is according to described resonance frequency, when determining the intrinsic coefficient of described cavity,
Specifically for:
According to described resonance frequency F0 and formula Q=(ZF0-ZX)/(F0-X), determine described intrinsic coefficient,
Wherein, ZF0Representing described electroacoustic monomer resistance value at described resonance frequency, X represents preset reference frequency
Point, ZXRepresent described electroacoustic monomer resistance value at described preset reference frequency.
Mobile terminal 800 is capable of each process that in previous embodiment, mobile terminal realizes, for avoiding weight
Multiple, repeat no more here.
The mobile terminal 800 of the embodiment of the present invention, utilizes self existing circuit connection structure, controls audio frequency
The swept-frequency signal whether output element output leaks for test chamber, and obtain this swept-frequency signal and be applied to electricity
Time on sound monomer, the input voltage of this electroacoustic monomer, thus the resistance of this electroacoustic monomer is determined according to input voltage
Anti-value, and frequency values corresponding for maximum impedance value is defined as resonance frequency, and then judge according to resonance frequency
The sealing of cavity.Therefore, the mobile terminal 800 of the embodiment of the present invention, when carrying out cavity test, nothing
Need to specifically test equipment and test environment, and need not tear open machine, detection speed is fast, testing result error
Little, solve test process in prior art loaded down with trivial details, and asking of high-volume quickly detection demand cannot be met
Topic.
Those of ordinary skill in the art are it is to be appreciated that combine respectively showing of the embodiments described herein description
The unit of example and algorithm steps, it is possible to come with the combination of electronic hardware or computer software and electronic hardware
Realize.These functions perform with hardware or software mode actually, depend on the application-specific of technical scheme
And design constraint.Each specifically should being used for can be used different methods to realize by professional and technical personnel
Described function, but this realization is it is not considered that beyond the scope of this invention.
Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, and foregoing description
The specific works process of system, device and unit, be referred to the corresponding process in preceding method embodiment,
Do not repeat them here.
In embodiment provided herein, it should be understood that disclosed apparatus and method, Ke Yitong
The mode crossing other realizes.Such as, device embodiment described above is only schematically, such as,
The division of described unit, is only a kind of logic function and divides, and actual can have other division side when realizing
Formula, the most multiple unit or assembly can in conjunction with or be desirably integrated into another system, or some features can
To ignore, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or logical
Letter connection can be the INDIRECT COUPLING by some interfaces, device or unit or communication connection, can be electrical,
Machinery or other form.
The described unit illustrated as separating component can be or may not be physically separate, as
The parts that unit shows can be or may not be physical location, i.e. may be located at a place, or
Can also be distributed on multiple NE.Can select therein some or all of according to the actual needs
Unit realizes the effect of the present embodiment scheme.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit,
Can also be that unit is individually physically present, it is also possible to two or more unit are integrated in a unit
In.
If described function realizes and as independent production marketing or use using the form of SFU software functional unit
Time, can be stored in a computer read/write memory medium.Based on such understanding, the skill of the present invention
Part or the part of this technical scheme that prior art is contributed by art scheme the most in other words are permissible
Embodying with the form of software product, this computer software product is stored in a storage medium, including
Some instructions are with so that a computer equipment (can be that personal computer, server, or network set
Standby etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium
Including: USB flash disk, portable hard drive, ROM, RAM, magnetic disc or CD etc. are various can store program generation
The medium of code.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to
This, any those familiar with the art, in the technical scope that the invention discloses, can readily occur in
Change or replacement, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should
It is as the criterion with scope of the claims.
Claims (12)
1. a method for test chamber sealing, is applied to mobile terminal, described mobile terminal include cavity,
The electroacoustic monomer being arranged in described cavity and the audio frequency output element electrically connected with described electroacoustic monomer, its
Being characterised by, described method includes:
Control signal is inputted, when making described audio frequency output element according to predetermined interval to described audio frequency output element
Between export different frequency value swept-frequency signal；
Obtain the input voltage of described electroacoustic monomer when described swept-frequency signal acts on described electroacoustic monomer；
According to described input voltage, determine the resonance frequency of described cavity；
According to described resonance frequency, determine the sealing of described cavity.
2. the method for claim 1, it is characterised in that described according to described input voltage, determines
The step of the resonance frequency of described cavity, including:
According to described input voltage, determine described electroacoustic monomer resistance value at different frequency value；
Maximum impedance value is selected from described resistance value；
Frequency values corresponding with described maximum impedance value in described swept-frequency signal is defined as described resonance frequency.
3. method as claimed in claim 2, it is characterised in that described according to described input voltage, determines
The step of described electroacoustic monomer resistance value at different frequency value, including:
Obtain line impedance R1 between described audio frequency output element and described electroacoustic monomer；
According to described input voltage U1, described line impedance R1 and formula R=U1*R1/ (U-U1), really
Fixed described electroacoustic monomer resistance value R at different frequency value, wherein, U represents described audio frequency output element
The magnitude of voltage of the described swept-frequency signal of the different frequency value of output.
4. the method for claim 1, it is characterised in that described according to described resonance frequency, determines
The step of the sealing of described cavity, including:
Within judging whether described resonance frequency is positioned at default span；
If described resonance frequency is less than the lower limit of described default span, it is determined that described cavity is in be let out
Leakage state.
5. method as claimed in claim 4, it is characterised in that described judge described resonance frequency whether position
After step within default span, described method also includes:
If within described resonance frequency is positioned at described default span, then according to described resonance frequency, determine
The intrinsic coefficient of described cavity；
Judge that whether described intrinsic coefficient is less than predetermined threshold value；
If described intrinsic coefficient is less than described predetermined threshold value, it is determined that described cavity is in leak condition；
If described intrinsic coefficient is more than described predetermined threshold value, it is determined that described cavity is in non-leak condition.
6. method as claimed in claim 5, it is characterised in that described according to described resonance frequency, determines
The intrinsic coefficient of described cavity, including:
According to described resonance frequency F0 and formula Q=(ZF0-ZX)/(F0-X), determine described intrinsic coefficient,
Wherein, ZF0Representing described electroacoustic monomer resistance value at described resonance frequency, X represents preset reference frequency
Point, ZXRepresent described electroacoustic monomer resistance value at described preset reference frequency.
7. a mobile terminal, the electroacoustic monomer including cavity, being arranged in described cavity and with described electricity
The audio frequency output element of sound monomer electrical connection, it is characterised in that described mobile terminal also includes:
Control module, for inputting control signal to described audio frequency output element, makes described audio frequency output element
Swept-frequency signal according to preset interval time output different frequency value；
Acquisition module, is used for obtaining described electroacoustic monomer when described swept-frequency signal acts on described electroacoustic monomer
Input voltage；
Resonance frequency determines module, for the described input voltage obtained according to described acquisition module, determines institute
State the resonance frequency of cavity；
Judge module, for determining, according to described resonance frequency, the described resonance frequency that module determines, determines institute
State the sealing of cavity.
8. mobile terminal as claimed in claim 7, it is characterised in that described resonance frequency determines module bag
Include:
Impedance acquiring unit, for according to described input voltage, determines that described electroacoustic monomer is in different frequency value
The resistance value at place；
Select unit, for selecting maximum impedance value from the described resistance value that described impedance acquiring unit obtains；
Resonance frequency determines unit, for by frequency corresponding with described maximum impedance value in described swept-frequency signal
Value is defined as described resonance frequency.
9. mobile terminal as claimed in claim 8, it is characterised in that described impedance acquiring unit includes:
Obtain subelement, for obtaining the line impedance between described audio frequency output element and described electroacoustic monomer
R1；
Computation subunit, for according to described input voltage U1, described line impedance R1 and formula
R=U1*R1/ (U-U1), determines described electroacoustic monomer resistance value R at different frequency value, wherein, U
Represent the magnitude of voltage of the described swept-frequency signal of the different frequency value that described audio frequency output element exports.
10. mobile terminal as claimed in claim 7, it is characterised in that described judge module includes:
First judging unit, within being used for judging whether described resonance frequency is positioned at default span；
First determines unit, for judging that described resonance frequency is preset less than described when described first judging unit
During the lower limit of span, determine that described cavity is in leak condition.
11. mobile terminals as claimed in claim 10, it is characterised in that described judge module also includes:
When described first judging unit, intrinsic factor determination unit, described in judging that described resonance frequency is positioned at
Time within default span, determine the intrinsic coefficient of described cavity according to described resonance frequency；
Second judging unit, for judging described intrinsic coefficient that described intrinsic factor determination unit determines whether
Less than predetermined threshold value；
Second determines unit, for judging that described intrinsic coefficient is preset less than described when described second judging unit
During threshold value, determine that described cavity is in leak condition；
3rd determines unit, for judging that described intrinsic coefficient is preset more than described when described second judging unit
During threshold value, determine that described cavity is in non-leak condition.
12. mobile terminals as claimed in claim 11, it is characterised in that described intrinsic factor determination unit
Specifically for:
According to described resonance frequency F0 and formula Q=(ZF0-ZX)/(F0-X), determine described intrinsic coefficient,
Wherein, ZF0Representing described electroacoustic monomer resistance value at described resonance frequency, X represents preset reference frequency
Point, ZXRepresent described electroacoustic monomer resistance value at described preset reference frequency.
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| CN201610280334.8A CN105953980B (en) | 2016-04-29 | 2016-04-29 | A kind of method and mobile terminal of test chamber leakproofness |
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| CN201610280334.8A CN105953980B (en) | 2016-04-29 | 2016-04-29 | A kind of method and mobile terminal of test chamber leakproofness |
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| CN105953980B (en) | 2018-08-17 |
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