CN104569788B - A kind of mainboard audio loop test device and method of testing - Google Patents
A kind of mainboard audio loop test device and method of testing Download PDFInfo
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- CN104569788B CN104569788B CN201510017056.2A CN201510017056A CN104569788B CN 104569788 B CN104569788 B CN 104569788B CN 201510017056 A CN201510017056 A CN 201510017056A CN 104569788 B CN104569788 B CN 104569788B
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Abstract
The invention discloses a kind of mainboard audio loop test device, it is characterised in that：Including integrated test system, sound-muffling box, loudspeaker, audio-switch, photo resistance and buzzer, audio-switch includes the wheat head and LED display lamps of electrical connection, photo resistance and buzzer electrically connect with integrated test system respectively, integrated test system is used for buzzer power supply and the feedback signal for receiving photo resistance, loudspeaker and wheat head are arranged in sound-muffling box, and photo resistance is correspondingly arranged with LED display lamps.Direct analogue audio frequency loop works, audio parts are connected in the signal output part of mainboard audio loop, when audio loop works, audio parts can intuitively be detected, and whether sounding judges that whether normal audio loop is, both there is the test of traditional human ear to judge reliability, while and can realizes efficient automatic test.
Description
Technical field
The invention belongs to mainboard audio loop technical field of measurement and test, and in particular to mainboard audio loop test device and test
Method.
Background technology
The mainboard of the electronic products such as mobile phone, tablet personal computer needs to carry out various tests after the completion of production, to ensure its energy
Normal use, including the test for mainboard audio loop, traditional method of testing is tested using human ear, although reliability
High but efficiency is low, does not meet production instantly and pursues the values of unit cost, thus mainboard audio loop is tested at present
Technology is mainly using the frequency analog signal and the method for amplitude on testing host audio loop.This method is in driving audio loop
On the premise of work, the signal of given frequency amplitude is fed in audio loop origin or beginning, after audio loop is handled, in terminal test
The frequency and amplitude of each road signal judge whether signal of the audio loop after processing be normal, if the signal of terminal recovery
Frequency meets expection with amplitude, that is, judges that audio loop is normal.Audio loop on usual electronic product mainboard is believed including two-way
Number, because what the measuring technology only separated tests one-channel signal, and audio parts need two paths of signals to coordinate the normal work of ability
Make, so in the case that above-mentioned measuring technology is all normal in one-channel signal, but tie loop and device break down, can cause to miss
Sentence.I.e. above-mentioned method of testing can only covering part audio loop device, a part of device missing and failure, can also be obtained in terminal
Meet expected result.Specifically, as shown in figure 1, current audio loop-around test technology is only individually for branch road 1 and branch road 2
Separate type is done individually to test, it is illustrated that the device irised out of circle all will be unable to cover, cause branch road to aid in and coordination device failure
When, audio parts (SPK) cisco unity malfunction and can not detect.
The content of the invention
For above-mentioned the shortcomings of the prior art, it is an object of the invention to design a kind of mainboard audio loop test dress
Put and method of testing, its direct analogue audio frequency loop works, audio parts are connected in the signal output part of mainboard audio loop
(SPK), when audio loop works, can intuitively detecting audio parts, whether sounding judges that whether normal audio loop is, both
Judge reliability with the test of traditional human ear, while and can realizes efficient automatic test.
To achieve these goals, the technical solution adopted in the present invention is：
A kind of mainboard audio loop test device, including it is integrated test system, sound-muffling box, loudspeaker, audio-switch, photosensitive
Resistance and buzzer, audio-switch include the wheat head and LED display lamps of electrical connection, photo resistance and buzzer respectively with integrated survey
Test system electrically connects, and integrated test system is used for buzzer power supply and the feedback signal for receiving photo resistance, loudspeaker
It is arranged at wheat head in sound-muffling box, photo resistance is correspondingly arranged with LED display lamps.
Wherein, audio-switch is provided with power access end, and audio-switch passes through the power access end and stable operating voltage
Outer power supply source electrical connection.Audio-switch also includes the sensitivity control being arranged between wheat head and LED display lamps.Sound-muffling box
For airtight box body, silencing cotton is packed with sound-muffling box.
A kind of method using such as foregoing mainboard audio loop test device testing host audio loop, including following test
Process：
A, integrated test system is powered to buzzer, and coordinates test software driving mainboard audio loop work, by buzzing
Device is placed in the microphone end of mainboard audio loop, and the audio signal output end of mainboard audio loop is connected with loudspeaker；
B, buzzer sounding provides stable audio signal to the microphone end of mainboard audio loop, and the audio signal is through master
After the processing of plate audio loop, exported from the audio signal output end of mainboard audio loop to loudspeaker, the sound is reduced by loudspeaker
Frequency signal simultaneously carries out simulation sounding；
C, the wheat head of audio-switch is collected into the voice signal that loudspeaker is sent in sound-muffling box, is driven after circuit conversion
The LED display lamps of audio-switch light, and wherein the luminosity of LED display lamps is relative with the voice signal size that wheat head is collected into
Should；
D, photo resistance obtains corresponding resistance after monitoring the luminance of LED display lamps and is fed back to integrated survey
The resistance of test system, wherein photo resistance is corresponding with the luminosity of LED display lamps；
E, the resistance of the photo resistance got is fed back to test software by integrated test system, by test software by its with
Demarcation resistance value ratio judges whether the work of mainboard audio loop is normal to rear.
After adopting the above technical scheme, the invention has the advantages that compared with the prior art,：
The present invention directly simulates the work of mainboard audio loop, is raised one's voice in the audio signal output end connection of mainboard audio loop
Device, by sound-optical-electricity conversion to realize that the high-efficient automatic to mainboard audio loop is tested in detection process, wherein sound-optical turn
Change and ensure that testing reliability, optical-electronic conversion ensure that test high efficiency and accuracy, and it covers mainboard in test process
All devices of audio loop, the situation for avoiding judging by accident in conventional testing techniques occur.And the integrated test system is existing
There is the integrated test system in measuring technology, can effectively utilize existing resource, compatible good, low manufacture cost.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples：
Fig. 1 is the structural representation of the audio loop described in background technology.
Fig. 2 is the structural representation of the present invention.
In figure：1：Integrated test system；2：Sound-muffling box；3：Loudspeaker；4：Wheat head；5：Sensitivity control；6：LED is shown
Lamp；7：Photo resistance；8：Buzzer.
Embodiment
As described below is only presently preferred embodiments of the present invention, is not intended to limit the scope of the present invention.
Embodiment, as shown in Figure 2.
A kind of mainboard audio loop test device, including integrated test system 1, sound-muffling box 2, loudspeaker 3, audio-switch,
Photo resistance 7 and buzzer 8, audio-switch include the wheat that sequentially electrically connects first 4, sensitivity control 5 and LED display lamps 6, wheat
First 4 collect the big I reaction of voice signal on the luminosity of rear end LED display lamps 6, so as to whether recognize voice signal
Up to standard, the effect of sensitivity control 5 is that the luminosity of LED display lamps 6 is adjusted according to wheat first 4 collection voice signal,
Enable the luminosity of LED display lamps 6 more accurately to react wheat first 4 and collect voice signal size, audio-switch is provided with electricity
Source incoming end, audio-switch are electrically connected by the power access end with the outer power supply source of stable operating voltage, think LED display lamps
6 power supplies, the voltage of outer power supply source need to be separately provided and need to keep stable, to ensure that test is accurate, such as electricity can be used directly
The USB port 5V power supplies of brain board, photo resistance 7 and buzzer 8 electrically connect with integrated test system 1 respectively, integration testing system
Feedback signal of the system 1 for being powered to buzzer 8 and for receiving photo resistance 7, loudspeaker 3 and wheat first 4 are arranged at sound-muffling box 2
Interior, sound-muffling box 2 is airtight box body, silencing cotton is packed with sound-muffling box 2, silencing cotton plays fixed bin body inner body and isolation is outer
The effect of boundary's sound interference, to improve test accuracy, photo resistance 7 and LED display lamps 6 are correspondingly arranged, and photo resistance 7 is used for
Audio-switch LED state is monitored, LED luminance directly determines the resistance size of photo resistance 7, and LED display lamps 6 and photo resistance 7 can
It can also be arranged on outside sound-muffling box 2 inside sound-muffling box 2 with being arranged at, LED display lamps 6 and photo resistance 7 are arranged at sound-muffling box 2
Photo resistance 7 will not be by extraneous illumination effect when internal, and it is more accurate to test, and LED display lamps 6 and photo resistance 7 are arranged at
The sound-optical transfer process in test process then can be intuitively monitored outside sound-muffling box 2, test is more reliable.
A kind of method using such as foregoing mainboard audio loop test device testing host audio loop, including following test
Process：
A, integrated test system 1 is powered to buzzer 8, and coordinates test software driving mainboard audio loop work, by honeybee
Ring device 8 is placed in the microphone end of mainboard audio loop, and the audio signal output end of mainboard audio loop is connected with loudspeaker 3；
B, the sounding of buzzer 8 provides stable audio signal, audio signal warp to the microphone end of mainboard audio loop
After the processing of mainboard audio loop, export to loudspeaker 3 from the audio signal output end of mainboard audio loop, reduced by loudspeaker 3
The audio signal simultaneously carries out simulation sounding；
C, the wheat of audio-switch first 4 is collected into the voice signal that loudspeaker 3 is sent in sound-muffling box 2, after circuit conversion
Drive the LED display lamps 6 of audio-switch luminous, the voice signal that wherein luminosity of LED display lamps 6 is collected into wheat first 4
Size is corresponding；
D, photo resistance 7 obtains corresponding resistance after monitoring the luminance of LED display lamps 6 and fed back to integrated
Test system 1, the wherein resistance of photo resistance 7 are corresponding with the luminosity of LED display lamps 6；
E, the resistance of the photo resistance 7 got is fed back to test software by integrated test system 1, by test software by its
Judge whether the work of mainboard audio loop is normal to rear with demarcation resistance value ratio.
The present invention directly simulates the work of mainboard audio loop, is raised one's voice in the audio signal output end connection of mainboard audio loop
Device 3, by sound-optical-electricity conversion to realize that the high-efficient automatic to mainboard audio loop is tested in detection process, wherein sound-optical
Conversion ensure that testing reliability, and optical-electronic conversion ensure that test high efficiency and accuracy, and it covers master in test process
All devices of plate audio loop, the situation for avoiding judging by accident in conventional testing techniques occur.And the integrated test system 1 is
Integrated test system 1 in existing measuring technology, it can effectively utilize existing resource, compatible good, low manufacture cost.
Described above is only the better embodiment of the present invention, therefore all constructions according to described in present patent application scope,
The equivalent change or modification that feature and principle are done, is included in the range of present patent application.
Claims (5)
- A kind of 1. mainboard audio loop test device, it is characterised in that：Including integrated test system, sound-muffling box, loudspeaker, acoustic control Switch, photo resistance and buzzer, audio-switch include the wheat head and LED display lamps of electrical connection, photo resistance and buzzer point Do not electrically connected with integrated test system, integrated test system is used for buzzer power supply and the feedback letter for receiving photo resistance Number, sound-muffling box is airtight box body, and loudspeaker and wheat head are arranged in sound-muffling box, and photo resistance is correspondingly arranged with LED display lamps, honeybee Ring device is placed in the microphone end of mainboard audio loop to be measured, and audio signal output end and the loudspeaker of mainboard audio loop to be measured connect Connect.
- 2. mainboard audio loop test device according to claim 1, it is characterised in that：Audio-switch is provided with plant-grid connection End, audio-switch are electrically connected by the power access end with the outer power supply source of stable operating voltage.
- 3. mainboard audio loop test device according to claim 1, it is characterised in that：Audio-switch also includes setting Sensitivity control between Yu Maitou and LED display lamps.
- 4. mainboard audio loop test device according to claim 1, it is characterised in that：Noise reduction is packed with sound-muffling box Cotton.
- A kind of 5. side of mainboard audio loop test device testing host audio loop using as described in claim 1-4 is any Method, including following test process：A, integrated test system is powered to buzzer, and coordinates test software driving mainboard audio loop work, and buzzer is put In the microphone end of mainboard audio loop, the audio signal output end of mainboard audio loop is connected with loudspeaker；B, buzzer sounding provides stable audio signal to the microphone end of mainboard audio loop, and the audio signal is through mainboard sound After the processing of frequency loop, exported from the audio signal output end of mainboard audio loop to loudspeaker, audio letter is reduced by loudspeaker Number and carry out simulation sounding；C, the wheat head of audio-switch is collected into the voice signal that loudspeaker is sent in sound-muffling box, and acoustic control is driven after circuit conversion The LED display lamps of switch light, and wherein the luminosity of LED display lamps is corresponding with the voice signal size that wheat head is collected into；D, photo resistance obtains corresponding resistance after monitoring the luminance of LED display lamps and is fed back to integration testing system System, wherein the resistance of photo resistance is corresponding with the luminosity of LED display lamps；E, the resistance of the photo resistance got is fed back to test software by integrated test system, by test software by itself and demarcation Resistance value ratio judges whether the work of mainboard audio loop is normal to rear.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106679794B (en) * | 2015-11-10 | 2020-11-27 | 上海凡卓软件开发技术有限公司 | System and method for testing mainboard motor driving circuit |
| CN106153995A (en) * | 2016-09-26 | 2016-11-23 | 伟创力电子技术(苏州)有限公司 | A kind of improved-type LED and buzzer test fixture |
| CN108064347A (en) * | 2017-11-28 | 2018-05-22 | 福建联迪商用设备有限公司 | The audio pin test method and test device of communication module |
| CN110022512A (en) * | 2019-04-19 | 2019-07-16 | 晶晨半导体(上海)股份有限公司 | A kind of hardware adjustment method of loopback interface |
| CN113347548B (en) * | 2021-05-31 | 2022-10-04 | 深圳市视美泰技术股份有限公司 | Audio system detection method and device, electronic product and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4065647A (en) * | 1974-01-03 | 1977-12-27 | Frye G J | Automatic acoustical testing system |
| TWI336598B (en) * | 2007-06-20 | 2011-01-21 | Wistron Corp | Mic fabrication testing system and method thereof |
| CN101426167A (en) * | 2007-10-30 | 2009-05-06 | 中兴通讯股份有限公司 | Audio test system and method |
| CN101616354A (en) * | 2008-06-23 | 2009-12-30 | 潘龙 | Optical microphone |
| CN103167391B (en) * | 2011-12-12 | 2016-04-13 | 英业达股份有限公司 | The audio testing method of audio test system and test system |
| CN203968067U (en) * | 2014-06-18 | 2014-11-26 | 刘志强 | A kind of audio frequency amplifier negative-feedback circuit |
| CN204462321U (en) * | 2015-01-13 | 2015-07-08 | 宁波麦博韦尔移动电话有限公司 | A kind of mainboard audio loop proving installation |
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Application publication date: 20150429 Assignee: Ningbo maidu Intelligent Manufacturing Co.,Ltd. Assignor: MOBIWIRE MOBILES (NINGBO) Co.,Ltd. Contract record no.: X2021330000440 Denomination of invention: A main board audio circuit test device and test method Granted publication date: 20180330 License type: Common License Record date: 20211018 |
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