CN103916506A - Testing device and audio automatic testing system and method for mobile terminal - Google Patents
Testing device and audio automatic testing system and method for mobile terminal Download PDFInfo
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- CN103916506A CN103916506A CN201210592017.1A CN201210592017A CN103916506A CN 103916506 A CN103916506 A CN 103916506A CN 201210592017 A CN201210592017 A CN 201210592017A CN 103916506 A CN103916506 A CN 103916506A
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Abstract
The invention provides a testing device and an audio automatic testing system and method for a mobile terminal. The testing device includes a soundproof box used for providing a testing environment for the mobile terminal; an acoustic simulating device used for simulating the auditory senses of the human ears and a phonation effect of a human mouth; and a testing clamp used for fixing the mobile terminal and the acoustic simulating device. The acoustic simulating device is fixed on the testing clamp. The testing clamp is fixed in the soundproof box. Through adoption of the testing device, and the audio acoustic testing system and the method for the mobile terminal, a rapid quantizing test can be performed on the mobile terminal efficiently and human factors can be eliminated so that test accuracy is improved and manpower cost is reduced.
Description
Technical field
The present invention relates to a kind of testing apparatus, audio frequency of mobile terminal Auto-Test System and method, especially a kind of testing apparatus for handset audio, system and method.
Background technology
Along with the develop rapidly of mobile communication technology, consumer is also more and more higher to the requirement of mobile terminal, and the numerous and confused characteristic attraction that proposes oneself of each manufacturer, comprising the audio that improves mobile terminal.Mobile terminal is varied, comprises mobile phone, music player (MP3/MP4 etc.), panel computer, electronic dictionary, e-book, recording pen, automatic navigator etc.Wherein, music phone is focused on audio especially.In factory's manufacture process, increase the test of tonequality, can guarantee the audio of mobile terminal.But along with the scale that mobile terminal is manufactured is increasing, the cost of human resources is more and more higher, only has and reduces as much as possible testing cost and more effective automated production, guarantee mobile terminal product quality and production control cost.This production test technical requirement to mobile terminal product is also more and more higher.At present generally by recording and broadcast detection of handset audio frequency, mobile phone Mike is judged Mike's function, plays music and judge the quality of audio frequency from receiver or loudspeaker to the test in receiver loop, this kind of determination methods subjectivity is strong, easily erroneous judgement, production efficiency is low.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of testing apparatus, and it can be realized automatically the audio of mobile terminal is detected.
The present invention is achieved through the following technical solutions: a kind of testing apparatus, and for the audio of testing mobile terminal, described testing apparatus comprises:
Sound proof box, is used to described mobile terminal that test environment is provided;
Acoustic simulation equipment, for simulating the sense of hearing of people's ear and the sounding effect of mouth;
Test fixture, for fixing described mobile terminal and described acoustic simulation equipment;
Described acoustic simulation equipment is fixed on described test fixture, and described test fixture is fixed in described sound proof box.
As the further improvement of technique scheme, described sound proof box comprises that upper cover, base, the described upper cover of driving are opened with respect to described base or closed drive unit and control the Test Switchboard of the start and stop of described cylinder.
As the further improvement of technique scheme, described drive unit comprises two cylinders that are separately positioned on described sound proof box both sides, is provided with the inductive switch that whether bounces back to precalculated position for detection of described cylinder on described cylinder.
As the further improvement of technique scheme, described sound proof box also comprises a protective cover, and described sound proof box is placed in described protective cover.
As the further improvement of technique scheme, described acoustic simulation equipment comprise to the artificial mouth of the microphone output test source of sound of described mobile terminal, gather the receiver output of described mobile terminal audio signal pressure field artificial ear and gather the free field artificial ear of the audio signal of the loudspeaker output of described mobile terminal.
As the further improvement of technique scheme, described test fixture comprises installing rack, holder, cover plate, pressure field artificial ear and free field artificial ear, described holder, described cover plate, described pressure field artificial ear and described free field artificial ear are attached on described installing rack, described holder is for fixing described mobile terminal, the audio signal that described free field artificial ear is exported for gathering the loudspeaker of described mobile terminal, the audio signal that described pressure field artificial ear is exported for gathering the receiver of described mobile terminal.
As the further improvement of technique scheme, described pressure field artificial ear comprises for the fixed leg of fixing described pressure field artificial ear, is formed at sound inlet, sound chamber and bleeder port on described pressure field artificial ear fixed leg, described sound inlet, described sound chamber and described bleeder port are for giving described pressure field artificial ear by the audio signal transmission of the receiver output of described mobile terminal, and described bleeder port is used for preventing that audio signal from producing resonance at described sound intracavity reflecting.
As the further improvement of technique scheme, described holder is provided with the sense switch that whether moves to precalculated position for detection of described cover plate towards described mobile terminal.
According to a further aspect in the invention, provide a kind of audio frequency of mobile terminal Auto-Test System, described audio frequency of mobile terminal Auto-Test System comprises above-mentioned testing apparatus and audio-frequency signal processing module and control module, wherein,
Described testing apparatus is connected with described audio-frequency signal processing module and described control module, for described mobile terminal being carried out to audio-frequency test at test environment;
Described audio-frequency signal processing module is connected with described control module and described testing apparatus, for transmission and the processing of the audio signal between described testing apparatus and described control module;
Described control module is used for controlling described testing apparatus and carries out audio-frequency test and produce test result.
As the further improvement of technique scheme, described audio-frequency signal processing module comprises the power amplifier module amplifying for audio signal and the audio signal sample module of audio signal being carried out to modulus/digital-to-analogue conversion.
As the further improvement of technique scheme, described audio frequency of mobile terminal Auto-Test System also comprises the detection module for detection of the test mode of described testing apparatus, and described detection module is connected with described control module and described testing apparatus.
As the further improvement of technique scheme, described control module be connected to control described mobile terminal playing with described mobile terminal described in audio-frequency test file, described mobile terminal is mobile phone, MP3 music player, MP4 music player, panel computer, electronic dictionary, e-book, recording pen, automatic navigator, and described control module is computer.
In accordance with a further aspect of the present invention, provide a kind of audio frequency of mobile terminal automatic test approach, described audio frequency of mobile terminal automatic test approach comprises the following steps:
Step S0, carries out software initialization by control module;
Whether step S1, enters state to be measured, and control module sends query statement to detection module, detect Test Switchboard and be pressed, if enter step S2, otherwise continues execution step S1;
Step S2, control module sends lower air cylinder instruction to detection module, indicate described air cylinder driven upper cover and base closure, and detect upper cover and whether completely closure of base by inductive switch, if closure and Test Switchboard entered step S3 in the state of being pressed before upper cover and the complete closure of base completely always, otherwise control module sends cylinder climb command to detection module, indication air cylinder driven upper cover, away from base, returns to step S1;
Step S3, control module sends query statement to detection module, whether inquiry sense switch detects free field artificial ear moves to precalculated position towards described holder, if enter step S4, otherwise control module sends cylinder climb command to detection module, indication air cylinder driven upper cover, away from base, returns to step S1;
Step S4, described step S4 comprises the following steps S42, step S44 and step S46:
Step S42, control module sends displaying audio file instruction to mobile terminal, mobile terminal reads and can plug the audio file in the SD card being connected with described mobile terminal, and play back from the receiver of mobile terminal, gather audio signal by pressure field artificial ear, be transferred to audio signal sample module through power amplifier module, the audio signal after amplifying is changed into digital signal by audio signal sample module, send to control module, the software of control module carries out noise filtering to the audio signal collecting, frequency frequency analysis, loudness is analyzed, THD analyzes and shows loudness contour figure,
Step S44, control module sends displaying audio file instruction to mobile terminal, mobile terminal reads and can plug the audio file in the SD card being connected with described mobile terminal, and play back from the loudspeaker of mobile terminal, gather audio signal by free field artificial ear, be transferred to audio signal sample module through power amplifier module, the audio signal after amplifying is changed into digital signal by audio signal sample module, send to control module, the software of control module carries out noise filtering to the audio signal collecting, frequency frequency analysis, loudness is analyzed, THD analyzes and shows loudness contour figure, with
Step S46, send play instruction by control module to mobile terminal, mobile terminal is got through Mike to receiver loop, control module sends instruction to audio signal sample module, audio signal sample module output test audio signal, test audio signal is exported from artificial mouth through power amplifier module, Mike receives the test audio signal of artificial mouth output and exports from receiver by loop, pressure field artificial ear gathers from the audio signal of the output of receiver simultaneously, be transferred to audio signal sample module and change into digital signal through merit amplification module, send to control module, the software of control module carries out noise filtering to the audio signal collecting, frequency frequency analysis, loudness is analyzed, THD analyzes and shows loudness contour figure,
Step S5, the software of control module shows test results, and control module sends instruction to detection module, and indication cylinder is opened sound proof box, takes out mobile terminal, and returns to step S1.
The invention has the beneficial effects as follows: adopt testing apparatus of the present invention, can high efficiency low mobile terminal be carried out quantizing fast test, get rid of human factor, improve test accuracy, reduce human cost.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of specification, and for above and other objects of the present invention, feature and advantage can be become apparent, below especially exemplified by embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the Facad structure schematic diagram of the sound proof box of testing apparatus according to a preferred embodiment of the present invention while opening.
Fig. 2 is the structure schematic diagram of the sound proof box of testing apparatus according to a preferred embodiment of the present invention while opening.
Fig. 3 is the structural representation of the test fixture of testing apparatus according to a preferred embodiment of the present invention.
Fig. 4 is the structural representation of the pressure field artificial ear fixed leg of testing apparatus according to a preferred embodiment of the present invention.
Fig. 5 is the structured flowchart of audio frequency of mobile terminal Auto-Test System according to a preferred embodiment of the present invention.
Fig. 6 is the structured flowchart of audio frequency of mobile terminal Auto-Test System according to a further advantageous embodiment of the invention.
Fig. 7 is the flow chart of audio frequency of mobile terminal automatic test approach according to a preferred embodiment of the present invention.
Embodiment
Relevant aforementioned and other technology contents of the present invention, Characteristic can be known and present in the following detailed description coordinating with reference to graphic preferred embodiment.By the explanation of embodiment, when being able to more deeply and concrete understanding for technological means and effect of reaching predetermined object and taking the present invention, but appended graphic be only to provide with reference to the use of explanation, be not used for the present invention to be limited.
Herein, term " connection " comprises wired connection and wireless connections.Wired connection comprise for example connection, Ethernet cable and USB (USB) cable via IEEE 1394 cables etc.The Wireless Fidelity (WiFi) that comprises for example of wireless connections connects, Bluetooth
?connect Zigbee
?connect etc.
As shown in Figures 1 to 4, the testing apparatus of the present embodiment is for the audio of testing mobile terminal.This testing apparatus comprises sound proof box, acoustic simulation equipment and test fixture.This testing apparatus can be applicable to audio frequency of mobile terminal Auto-Test System.Wherein, sound proof box is used to mobile terminal that test environment is provided, and test environment is the test environment echoing without noise, voiceless sound.Acoustic simulation equipment is for simulating the sense of hearing of people's ear and the sounding effect of mouth; Test fixture is for fixed cellular terminal and acoustic simulation equipment.Described acoustic simulation equipment is fixed on described test fixture, and described test fixture is fixed in described sound proof box.
As shown in Figures 1 to 4, sound proof box 1 comprises upper cover 32, base 33 and drives upper cover 32 to open with respect to base 33 or closed drive unit.
In a preferred embodiment of the invention, described sound proof box 1 is the 160CM*45CM*50CM metal shell by 5MM thickness metal.So noise of isolation outside for 5MM thickness metal shell.Sound proof box the inside noise is preferably less than 45DBSPL, while guaranteeing test, is not affected by the external environment.
As shown in Figure 1 and Figure 2, drive unit comprises two stretch reciprocating cylinder 2 and cylinders 11 being configured in sound proof box 1 both sides.On cylinder 2 and cylinder 11, be provided with the inductive switch 10 that whether bounces back to precalculated position for detection of cylinder 2 and cylinder 11.Wherein, compressed-air actuated pressure energy is converted to mechanical energy by cylinder 2 and cylinder 11, and driving mechanism is done straight reciprocating motion, and cylinder is made up of cylinder barrel, end cap, piston, piston rod and seal etc., and this does not repeat for prior art.As shown in Figure 2, cylinder 2 and cylinder 11 have air inlet pipe interface 15.This air inlet pipe interface 15 is connected with source of the gas (not shown).As shown in Figure 1, sound proof box 1 also comprises the Test Switchboard 7 of the start and stop of control cylinder 2.
Sound proof box also comprises the acoustic material 9 that is arranged on the inner side of upper cover 32 and the inner side of base 33, and acoustic material 9 is sound-absorbing sponge.Sound proof box also comprises the protective cover 3 that is configured in sound proof box both sides.Sound proof box is placed in protective cover.Protective cover 3 enters sound proof box for the body part or the foreign matter that prevent tester.In a preferred embodiment of the invention, institute's art Sound-proof material 9 is sound-absorbing sponges that 20CM is thick, and the audio signal of sending for absorbing loudspeaker and artificial mouth can not produced resonance and disturbed test by the reflection of the metal shell of sound proof box 1.
As shown in Figures 1 to 4, acoustic simulation equipment comprises free field artificial ear 4 from the audio signal of the loudspeaker output of the artificial mouth 6 of source of sound, the pressure field artificial ear 8 that gathers the audio signal of the receiver output of mobile terminal, collection mobile terminal to the microphone output of mobile terminal that test.Wherein, artificial ear also claims artitificial ear, emulated artificial ear, and artificial mouth also claims artificial mouth.
As shown in Figure 3 and Figure 4, test fixture comprises installing rack 5, holder 31, cover plate 19, pressure field artificial ear 8 and free field artificial ear 4.Holder 31, cover plate 19, pressure field artificial ear 8 and free field artificial ear 4 are attached on installing rack 5.Holder 31 is for fixed cellular terminal.The shape of holder 31 can be determined according to the shape of the mobile terminal of concrete test.The audio signal that free field artificial ear 4 is exported for gathering the loudspeaker of mobile terminal, and the audio signal that pressure field artificial ear 8 is exported for collecting the receiver of mobile terminal.
Wherein, as shown in Figure 3, free field artificial ear 4 comprises free field artificial ear fixed leg 17.Free field artificial ear fixed leg 17 is for the fixing free field artificial ear 4 of telescopically.As shown in Figure 4, pressure field artificial ear 8 also comprises pressure field artificial ear fixed leg 24, is formed at sound inlet 21, sound chamber 22 and bleeder port 23 on pressure field artificial ear fixed leg 24, sound inlet 21, sound chamber 22 and bleeder port 23 for by the audio signal transmission of the receiver output of mobile terminal to pressure field artificial ear 8, bleeder port 23 produces resonance for preventing audio signal in 22 internal reflections of sound chamber.Mobile terminal holder is provided with the sense switch (also claiming to press down sense switch herein) 18 that whether moves to precalculated position for detection of cover plate 19 towards mobile terminal.
In the present embodiment, described test fixture is formed by 5MM bakelite structure, for fixed cellular terminal, artificial mouth 6, free field artificial ear 4, pressure field artificial ear 8, in assurance replacing testing mobile terminal or test process, the spacing of mobile terminal and artificial mouth 6, free field artificial ear 4, pressure field artificial ear 8 does not change, thereby does not affect test result.
Wherein, described free field artificial ear 4 is audio signals of the output for gathering mobile terminal, in the time that the sound proof box of testing apparatus is closed, free field artificial ear 4 need to keep the distance of 2CM to cause resonance disturbed test to guarantee audio signal can not reflect with the loudspeaker of mobile terminal.
Wherein, pressure field artificial ear 8 is the audio signals for gathering the output of mobile terminal receiver.Pressure field artificial ear 8 is to be fixed in artificial ear fixed leg 24, and the audio signal of mobile terminal receiver output is inputted and passed through sound chamber 22 again from entering sound mouth 21, is finally gathered by pressure field artificial ear 8.Described bleeder port 23 is the audio signals of coming from sound chamber 22 for discharge, guarantees that audio signal can not cause resonance disturbed test at sound intracavity reflecting.
Wherein, described artificial mouth 6 can be exported 1KHZ audio signal, and for mobile terminal Mike provides standard source of sound, artificial mouth 6 should keep the distance of 2CM to cause resonance disturbed test to guarantee audio signal can not reflect with mobile terminal Mike.
After the sound proof box of testing apparatus is closed, when distance between free field artificial ear 4 and the loudspeaker of mobile terminal is setting, the described sense switch 18 that presses down responds, press down sense switch 18 response results is returned to control module 100 by controlling fixture module 500, assurance is tested after pressing to assigned position, otherwise free field artificial ear 4 is excessive with the distance of the loudspeaker of mobile terminal, and the numerical value of test is less than normal, cause mistake to survey.
As shown in Figure 5, the audio frequency of mobile terminal Auto-Test System of the present embodiment comprises above-mentioned testing apparatus 400, audio-frequency signal processing module 600 and control module 100.Wherein, as implied above, described testing apparatus 400 is connected with described audio-frequency signal processing module 600 and described control module 100, for mobile terminal being carried out to audio-frequency test at test environment; Audio-frequency signal processing module 600 is connected with described control module 100 and described testing apparatus 400, for transmission and the processing of the audio signal between testing apparatus 400 and control module 100, control module 100 is carried out audio-frequency test and produces test result for controlling testing apparatus 400.
As shown in Figure 6, in a preferred embodiment of the invention, described audio frequency of mobile terminal Auto-Test System also comprises the detection module 500 for detection of the test mode of described testing apparatus 400, and described detection module 500 is connected with described control module 100 by RS232 interface.And audio-frequency signal processing module 600 comprises the power amplifier module 300 amplifying for audio signal and the audio signal sample module 200 of audio signal being carried out to modulus/digital-to-analogue conversion.Testing apparatus 400 is connected with control module 100 by USB.Wherein, control module 100, audio signal sample module 200, power amplifier module 300, testing apparatus 400, detection module 500 can be integrated into single automated test device.
In this embodiment, described audio signal sample module 200 is two-way input two-way output modules, it adopts pci interface and 24, sample rate is the universal audio card of 96kbp, operating frequency range 20HZ-20KHZ, to carry out modulus and the digital-to-analogue conversion of audio signal, wherein, the audio tones number of optional frequency in the exportable 20HZ-20KHZ of two-way output channel, two-way input channel can gather continuous audio signal in 20HZ-20KHZ.
In this embodiment, described power amplifier module 300 is power amplifiers that have three tunnels and input a road output low distortion, wherein two-way input Bonding pressure field artificial ear and free field artificial ear, one tunnel output connects artificial mouth, and power amplifier module 300 provides 24V bias voltage and can select the gain of 0DB or 20DB for two-way input.
In this embodiment, described detection module 500 is singlechip control panel, and real-time query Test Switchboard signal condition, survey clamp switch press down signal condition, detect sound proof box depressed position switching signal state and return to described control module 100 by RS232; Described in when test starts and finishes, control module 100 sends to detection module 500 instruction that opens and closes sound proof box.In the present embodiment, detection module 500 is placed in sound proof box.
In the present embodiment, detection module 500 by holding wire and inductive switch 10, press down sense switch 18 and Test Switchboard 7 is connected.Control module 100 is inquired about inductive switch 10, is pressed down the state of sense switch 18 and Test Switchboard 7 by detection module 500.
In the present embodiment, power amplifier module 300 is connected with audio signal sample module 200 and testing apparatus 400 by the coaxial audio interface of BNC respectively, and audio signal sample module 200 is connected with control module 100 by pci bus.Although the present embodiment adopts the coaxial audio interface of BNC, the present invention is not limited to this, also can adopt other suitable coaxial audio interface, the coaxial audio interface of for example RCA, or adopt other wireless or wired connection mode.
In the present embodiment, testing apparatus is provided with three bnc interfaces 12, usb 13, RS232 serial ports 14.The transfer audio signal interface of two artificial ears and an artificial mouth of described three bnc interfaces 12.Described usb 13 is connected with the serial ports of mobile terminal and described fixture control module 500 respectively with RS232 serial ports 14.Testing apparatus is also provided with air inlet pipe interface 15.Described air inlet pipe interface 15 is to provide air pressure for opening of the cylinder of sound proof box with closing.Wherein, power connection 16 is to provide power supply for described control module 500.But the invention is not restricted to this, audio-frequency signal processing module and control module can external power supplys, also can be power autonomous.
In a preferred embodiment of the invention, audio frequency of mobile terminal Auto-Test System also comprises SD card, in SD card, store audio-frequency test file, SD card can plug and be connected with mobile terminal, and control module 100 is connected with mobile terminal by USB to control mobile terminal playing audio-frequency test file.Wherein, SD card (Secure Digital Memory Card) is safe digital card, is a kind of memory device of based semiconductor fast-flash memory device, and it is used widely on mobile terminal.
In audio frequency of mobile terminal Auto-Test System of the present invention, mobile terminal can be mobile phone, MP3 music player, MP4 music player, panel computer, electronic dictionary, e-book, recording pen, automatic navigator etc.Mobile terminal is preferably music phone.
In audio frequency of mobile terminal Auto-Test System of the present invention, control module 100 is computer, the audio signal being provided with in control module 100 for audio signal sample module 200 is exported is carried out noise filtering, frequency frequency analysis, loudness analysis, THD (total harmonic distortion, total harmonic distortion): the software of analyzing and show loudness contour figure.Computer (Computer) full name: electronic computer, be commonly called as computer, be that one can be moved according to program, automatically, the modernization intelligent electronic device of high speed processing mass data.
As shown in Figure 7, audio frequency of mobile terminal automatic test approach comprises the following steps:
Step S0, carries out software initialization by control module 100;
Whether step S1, enters state to be measured, and control module 100 sends query statement to detection module 500, detect Test Switchboard 7 and be pressed and start cylinder 2 and cylinder 11, if enter step S2, otherwise continues execution step S1;
Step S2, control module 100 sends the instruction of lower air cylinder 2 and cylinder 11 to detection module 500, indication cylinder 2 and cylinder 11 drive upper cover 32 and base 33 closures, whether and it is completely closed with base 33 to detect upper cover 32 by the inductive switch 10 of magnetic, if closure and Test Switchboard entered step S3 in the state of being pressed before upper cover and the complete closure of base completely always, otherwise control module 100 sends to detection module 500 instruction that cylinder 2 and cylinder 11 rise, indication cylinder 2 and cylinder 11 drive upper cover away from base, return to step S1, in other words, in the process of upper cover 32 and base 33 closures, namely from operator press Test Switchboard 7 to inductive switch 10 detect upper cover 32 completely closed with base 33 during, if unclamping Test Switchboard 7, operator also can get back to step S1, adopt the mode of this operation at least can ensure personal safety: 1. guarantee that operator's both hands are by Test Switchboard, if while 2. occurring his person to cause safely danger or other situation in upper cover 32 and base 33 closing course, operator can unclamp Test Switchboard, and returns to step S1,
Step S3, control module 100 sends query statement to detection module 500, detection presses down sense switch 18 and whether detects free field artificial ear 4 and move to precalculated position towards mobile terminal, if enter step S4, otherwise control module 100 sends to detection module 500 instruction that cylinder 2 and cylinder 11 rise, indication cylinder 2 and cylinder 11 drive upper cover away from base, return to step S1;
Step S4, step S4 comprises the following steps S42, step S44 and step S46:
Step S42, control module 100 sends the instruction of displaying audio file to mobile terminal, mobile terminal reads the audio file in SD card, and play back from the receiver of mobile terminal, gather audio signal by pressure field artificial ear 8, be transferred to audio signal sample module 200 through power amplifier module 300, the audio signal after amplifying is changed into digital signal by audio signal sample module 200, send to control module 100, the software of control module 100 carries out noise filtering to the audio signal collecting, frequency frequency analysis, loudness is analyzed, THD analyzes and shows loudness contour figure,
Step S44, control module 100 sends the instruction of displaying audio file to mobile terminal, mobile terminal reads the audio file in SD card, and play back from the loudspeaker of mobile terminal, gather audio signal by free field artificial ear 4, be transferred to audio signal sample module 200 through power amplifier module 300, the audio signal after amplifying is changed into digital signal by audio signal sample module 200, send to control module 100, the software of control module 100 carries out noise filtering to the audio signal collecting, frequency frequency analysis, loudness is analyzed, THD analyzes and shows loudness contour figure, with
Step S46, send the instruction of playing to mobile terminal by control module 100, mobile terminal is got through Mike to receiver loop, control module 100 sends instruction to audio signal sample module 200, audio signal sample module 200 is exported test audio signal, test audio signal is exported from artificial mouth 6 through power amplifier module 300, Mike receives the test audio signal that artificial mouth 6 exports and exports from receiver by loop, pressure field artificial ear 8 gathers from the audio signal of the output of receiver simultaneously, be transferred to audio signal sample module 200 and change into digital signal through merit amplification module, send to control module 100, the software of control module 100 carries out noise filtering to the audio signal collecting, frequency frequency analysis, loudness is analyzed, THD analyzes and shows loudness contour figure,
Step S5, the software of control module 100 shows test results, and control module 100 sends instruction to detection module 500, and indication cylinder 2 and cylinder 11 are opened sound proof box, take out mobile terminal, and return to step S1.
Below by a specific embodiment using mobile phone as mobile terminal, introduce in detail audio frequency of mobile terminal Auto-Test System of the present invention and operation principle thereof.The test process of the audio frequency Auto-Test System of mobile phone is as follows:
Step 1: described control module 100 is opened testing software, initializers and hardware, described initializers are configuration files of read test software, the interface of reset test; Described initiating hardware is to send query statement to detection module 500, detects the test mode that starts Test Switchboard.
Step 2: mobile phone is installed with audio file SD card start, then connect USB line and be fixed on test clip upper module 400.The audio file of described SD be one by multifrequency point connects into, the time duration of a sound degree of amplitude 0.5V, each frequency is 0.5S sinusoidal signal.
Step 3: press described Test Switchboard 7, described detection module 500 returns to Test Switchboard state to control module 100; Control module 100 sends the instruction of lower air cylinders and detects the state of inductive switch 10 signals of the magnetic of sound proof box 1 to detection module 500, if unclamp Test Switchboard 7 in the time that sound proof box 1 is completely not closed, control module 100 sends the instruction of rising cylinder to detection module 500, control module 100 testing softwares recover state to be measured; If sound proof box presses down complete closure, sound proof box depressed position puts in place, removes last control module 100 test datas and surveys and enter next step testing procedure.According to this design, can prevent from closing to wait at sound proof box occurring unclamping in time when abnormal Test Switchboard 7 and sound proof box being opened recover state to be measured, protection tester's personal safety.
Step 4: after described sound proof box 1 closure, control module 100 presses down the status command of sense switch 18 to detection module 500 transmission detection fixtures, if testing apparatus does not press down, control module 100 sends and opens sound proof box and recover state to be measured to detection module 500; If the sense switch 18 that presses down of testing apparatus presses down, enter next step testing procedure.Be mounted on the cover plate of testing apparatus because detect the free field artificial ear of loudspeaker, if do not descend the cover plate of compression testing device, the change data of testing of the distance of loudspeaker and artificial ear are incorrect.According to this design, can guarantee each test can regulation distance build-in test, guarantee tester forget press down cause mistake survey.
Step 5: as above-mentioned conditions being possessed enters receiver test, send the instruction of displaying audio file to mobile phone by control module 100, mobile phone reads SD card audio file and plays back from receiver, simultaneously pressure field artificial ear 8 gathers audio signal and is transferred to audio frequency through merit amplification module 300 and divides acquisition module 200 and change into digital signal, passes to control module 100.Control module 100 softwares carry out noise filtering to the audio signal collecting, and then carry out frequency and amplitude filtering and determine the starting time of initial frequency, by the time of each every dot frequency, the frequency, loudness, the THD that analyze all frequencies analyze and judge the performance of receiver and loudspeaker and show loudness contour figure and result in testing software with the bound parameter of setting.
Step 6: send the instruction of displaying audio file by control module 100 to mobile phone, mobile phone reads SD card audio file and plays back from loudspeaker, simultaneously free field artificial ear 4 gathers audio signal and is transferred to audio signal sample module 200 and changes into digital signal through merit amplification module 300 and pass to control module 100 by PCI, control module 100 softwares carry out noise filtering to the audio signal collecting, and then carry out frequency and amplitude filtering and determine the starting time of initial frequency, by the time of each every dot frequency, analyze the frequency of all frequencies, loudness, THD analyzes and judges the performance of receiver and loudspeaker and show loudness contour figure and result in testing software with the bound parameter of setting.
Step 7: send the instruction of playing by control module 100 to mobile phone, mobile phone is got through Mike to receiver loop, control module 100 sends instruction to audio signal sample module 200, audio signal sample module 200 is exported 1KHz audio signal, audio signal is exported from artificial mouth 6 through power amplifier module 300, Mike receives artificial mouth output 1KHz audio signal and exports from receiver by mobile phone loop, pressure field artificial ear 8 gathers from the 1KHz audio signal of receiver output simultaneously, being transferred to audio frequency through merit amplification module 300 divides acquisition module and changes into digital signal, pass to control module 100, control module 100 softwares carry out noise filtering to the audio signal collecting, then analyze frequency, loudness, THD analyzes to judge Mike's performance and shows result in testing software.
Step 8: control module 100 softwares show test results and preserve test result and data after completing test, then control module 100 sends the instruction of opening sound proof box 1 to detection module 500, take out testing mobile phone, get back to testing procedure S2, control module 100 softwares enter next mobile phone state to be measured.
Compared with prior art, audio frequency of mobile terminal Auto-Test System of the present invention at least has the following advantages: 1. adopt audio frequency of mobile terminal Auto-Test System scheme of the present invention to be facilitated and to be revised test frequency point parameters by control module; 2. adopt audio frequency of mobile terminal Auto-Test System scheme of the present invention to carry out automatic calibration to test macro, without mounting or dismounting fixture and test component; 3. adopt the audio frequency of mobile terminal Auto-Test System scheme of the present invention can automatic decision test result, and show each frequency loudness change curve, friendly interface; 4. adopt audio frequency of mobile terminal Auto-Test System scheme of the present invention, safety guard plate is housed sound proof box and cylinder depression sensor guarantees tester's safety; 5. adopt audio frequency of mobile terminal Auto-Test System scheme of the present invention, cost is low, can large-scale application produce in factory's mobile phone; 6. adopt mobile terminal case load module air-tightness Auto-Test System scheme of the present invention, test data is saved in to database and guarantees data trackability, provide work and technical staff to analyze; 7. adopt mobile terminal case load module air-tightness Auto-Test System scheme of the present invention, system can be connected to the MES of factory and be convenient to the production and administration of product, guarantee product quality.
Above embodiment has been described in detail the present invention, but these are not construed as limiting the invention.Protection scope of the present invention is not limited with above-mentioned execution mode, as long as the equivalence that those of ordinary skills do according to disclosed content is modified or changed, all should include in the protection range of recording in claims.
Claims (13)
1. a testing apparatus, for the audio of testing mobile terminal, is characterized in that, described testing apparatus comprises:
Sound proof box, is used to described mobile terminal that test environment is provided;
Acoustic simulation equipment, for simulating the sense of hearing of people's ear and the sounding effect of mouth;
Test fixture, for fixing described mobile terminal and described acoustic simulation equipment;
Described acoustic simulation equipment is fixed on described test fixture, and described test fixture is fixed in described sound proof box.
2. testing apparatus according to claim 1, is characterized in that, described sound proof box comprises that upper cover, base, the described upper cover of driving are opened with respect to described base or closed drive unit and control the Test Switchboard of the start and stop of described cylinder.
3. testing apparatus according to claim 2, is characterized in that, described drive unit comprises two cylinders that are separately positioned on described sound proof box both sides, is provided with the inductive switch that whether bounces back to precalculated position for detection of described cylinder on described cylinder.
4. testing apparatus according to claim 1, is characterized in that, described sound proof box also comprises a protective cover, and described sound proof box is placed in described protective cover.
5. testing apparatus according to claim 1, it is characterized in that, described acoustic simulation equipment comprise to the artificial mouth of the microphone output test source of sound of described mobile terminal, gather the receiver output of described mobile terminal audio signal pressure field artificial ear and gather the free field artificial ear of the audio signal of the loudspeaker output of described mobile terminal.
6. testing apparatus according to claim 1, it is characterized in that, described test fixture comprises installing rack, holder, cover plate, pressure field artificial ear and free field artificial ear, described holder, described cover plate, described pressure field artificial ear and described free field artificial ear are attached on described installing rack, described holder is for fixing described mobile terminal, the audio signal that described free field artificial ear is exported for gathering the loudspeaker of described mobile terminal, the audio signal that described pressure field artificial ear is exported for collecting the receiver of described mobile terminal.
7. testing apparatus according to claim 6, it is characterized in that, described pressure field artificial ear comprises for the fixed leg of fixing described pressure field artificial ear, is formed at sound inlet, sound chamber and bleeder port on described pressure field artificial ear fixed leg, described sound inlet, described sound chamber and described bleeder port are for giving described pressure field artificial ear by the audio signal transmission of the receiver output of described mobile terminal, and described bleeder port is used for preventing that audio signal from producing resonance at described sound intracavity reflecting.
8. testing apparatus according to claim 6, is characterized in that, described holder is provided with the sense switch that whether moves to precalculated position for detection of described cover plate towards described mobile terminal.
9. an audio frequency of mobile terminal Auto-Test System, is characterized in that, described audio frequency of mobile terminal Auto-Test System comprises testing apparatus and audio-frequency signal processing module and the control module described in claim 1 to 8 any one, wherein,
Described testing apparatus is connected with described audio-frequency signal processing module and described control module, for described mobile terminal being carried out to audio-frequency test at test environment;
Described audio-frequency signal processing module is connected with described control module and described testing apparatus, for transmission and the processing of the audio signal between described testing apparatus and described control module;
Described control module is used for controlling described testing apparatus and carries out audio-frequency test and produce test result.
10. audio frequency of mobile terminal Auto-Test System according to claim 9, described audio-frequency signal processing module comprises the power amplifier module amplifying for audio signal and the audio signal sample module of audio signal being carried out to modulus/digital-to-analogue conversion.
11. audio frequency of mobile terminal Auto-Test Systems according to claim 9, it is characterized in that, described audio frequency of mobile terminal Auto-Test System also comprises the detection module for detection of the test mode of described testing apparatus, and described detection module is connected with described control module and described testing apparatus.
12. audio frequency of mobile terminal Auto-Test Systems according to claim 9, it is characterized in that, described control module be connected to control described mobile terminal playing with described mobile terminal described in audio-frequency test file, described mobile terminal is mobile phone, MP3 music player, MP4 music player, panel computer, electronic dictionary, e-book, recording pen, automatic navigator, and described control module is computer.
13. 1 kinds of audio frequency of mobile terminal automatic test approach, is characterized in that, described audio frequency of mobile terminal automatic test approach comprises the following steps:
Step S0, carries out software initialization by control module;
Whether step S1, enters state to be measured, and control module sends query statement to detection module, detect Test Switchboard and be pressed, if enter step S2, otherwise continues execution step S1;
Step S2, control module sends lower air cylinder instruction to detection module, indicate described air cylinder driven upper cover and base closure, and detect upper cover and whether completely closure of base by inductive switch, if closure and Test Switchboard entered step S3 in the state of being pressed before upper cover and the complete closure of base completely always, otherwise control module sends cylinder climb command to detection module, indication air cylinder driven upper cover, away from base, returns to step S1;
Step S3, control module sends query statement to detection module, whether inquiry sense switch detects free field artificial ear moves to precalculated position towards described holder, if enter step S4, otherwise control module sends cylinder climb command to detection module, indication air cylinder driven upper cover, away from base, returns to step S1;
Step S4, described step S4 comprises the following steps S42, step S44 and step S46:
Step S42, control module sends displaying audio file instruction to mobile terminal, mobile terminal reads and can plug the audio file in the SD card being connected with described mobile terminal, and play back from the receiver of mobile terminal, gather audio signal by pressure field artificial ear, be transferred to audio signal sample module through power amplifier module, the audio signal after amplifying is changed into digital signal by audio signal sample module, send to control module, the software of control module carries out noise filtering to the audio signal collecting, frequency frequency analysis, loudness is analyzed, THD analyzes and shows loudness contour figure,
Step S44, control module sends displaying audio file instruction to mobile terminal, mobile terminal reads and can plug the audio file in the SD card being connected with described mobile terminal, and play back from the loudspeaker of mobile terminal, gather audio signal by free field artificial ear, be transferred to audio signal sample module through power amplifier module, the audio signal after amplifying is changed into digital signal by audio signal sample module, send to control module, the software of control module carries out noise filtering to the audio signal collecting, frequency frequency analysis, loudness is analyzed, THD analyzes and shows loudness contour figure, with
Step S46, send play instruction by control module to mobile terminal, mobile terminal is got through Mike to receiver loop, control module sends instruction to audio signal sample module, audio signal sample module output test audio signal, test audio signal is exported from artificial mouth through power amplifier module, Mike receives the test audio signal of artificial mouth output and exports from receiver by loop, pressure field artificial ear gathers from the audio signal of the output of receiver simultaneously, be transferred to audio signal sample module and change into digital signal through merit amplification module, send to control module, the software of control module carries out noise filtering to the audio signal collecting, frequency frequency analysis, loudness is analyzed, THD analyzes and shows loudness contour figure,
Step S5, the software of control module shows test results, and control module sends instruction to detection module, and indication cylinder is opened sound proof box, takes out mobile terminal, and returns to step S1.
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