CN104569788A - Mainboard voice frequency circuit testing device and method - Google Patents
Mainboard voice frequency circuit testing device and method Download PDFInfo
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- CN104569788A CN104569788A CN201510017056.2A CN201510017056A CN104569788A CN 104569788 A CN104569788 A CN 104569788A CN 201510017056 A CN201510017056 A CN 201510017056A CN 104569788 A CN104569788 A CN 104569788A
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Abstract
The invention discloses a mainboard voice frequency circuit testing device. The mainboard voice frequency circuit testing device is characterized by comprising an integrated testing system, a noise reduction box, a loudspeaker, a voice-operated switch, a photoresistor and a buzzer, wherein the voice-operated switch comprises a microphone and an LED display lamp which are electrically connected with each other; the photoresistor and the buzzer are electrically connected with the integrated testing system; the integrated testing system is used for supplying power to the buzzer and receiving feedback signals of the photoresistor; the loudspeaker and the microphone are arranged in the noise reduction box; the photoresistor and the LED display lamp are correspondingly arranged. The mainboard voice frequency circuit testing device can directly simulate work of a voice frequency circuit; the signal output end of the mainboard voice frequency circuit is connected with a voice frequency device; when the voice frequency circuit works, whether the voice frequency circuit is normal or not can be judged by visually detecting whether the voice frequency device produces a sound or not, so the mainboard voice frequency circuit testing device has the reliability of traditional human ear testing and judgment and can also achieve high-efficiency automatic testing.
Description
Technical field
The invention belongs to mainboard audio loop technical field of measurement and test, be specifically related to mainboard audio loop proving installation and method of testing.
Background technology
The mainboard of the electronic product such as mobile phone, panel computer needs to carry out various test after production completes, to ensure that it can normally use, comprising the test for mainboard audio loop, traditional method of testing adopts the test of people's ear, although the high still inefficiency of reliability, do not meet instantly to produce and pursue the values of unit cost, thus current method mainboard audio loop measuring technology mainly being adopted to frequency analog signal on testing host audio loop and amplitude.The method is under the prerequisite driving audio loop work, the signal of given frequency amplitude is fed in audio loop origin or beginning, after audio loop process, judge that whether this audio loop signal is after treatment normal in the frequency of terminal test each road signal and amplitude, if the signal frequency that terminal reclaims and amplitude meet expection, namely judge that audio loop is normal.Audio loop on usual electronic product mainboard comprises two paths of signals, what be only separated due to this measuring technology tests one-channel signal, and audio parts needs two paths of signals to coordinate the normal work of ability, so above-mentioned measuring technology is all normal at one-channel signal, but when tie loop and device failure, can erroneous judgement be caused.Namely above-mentioned method of testing can only cover part audio loop device, and a part of device disappearance and fault, also can obtain meeting expected result in terminal.Specifically, as shown in Figure 1, current audio loop-around test technology is only independent to be done separate type for branch road 1 and branch road 2 and tests separately, the device that illustrated circle is irised out all cannot cover, cause branch road auxiliary and coordination device lost efficacy time, audio parts (SPK) cisco unity malfunction and cannot detecting.
Summary of the invention
For the deficiency that above-mentioned prior art exists, the object of the invention is to design a kind of mainboard audio loop proving installation and method of testing, its direct modeling audio loop works, audio parts (SPK) is connected at the signal output part of mainboard audio loop, when audio loop works, whether whether normal sounding is to judge audio loop can to detect audio parts intuitively, both had the test of traditional people's ear and judged reliability, while can realize high efficiency automatic test again.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of mainboard audio loop proving installation, comprise integrated test system, sound-muffling box, loudspeaker, audio-switch, photoresistance and hummer, audio-switch comprises wheat head and the LED display lamp of electrical connection, photoresistance and hummer are electrically connected with integrated test system respectively, the feedback signal of integrated test system for powering to hummer and for receiving photoresistance, loudspeaker and wheat head are arranged in sound-muffling box, and photoresistance is corresponding with LED display lamp to be arranged.
Wherein, audio-switch is provided with power access end, and audio-switch is electrically connected with the outer power supply source of stable operating voltage by this power access end.Audio-switch also includes the sensitivity control be arranged between wheat head and LED display lamp.Sound-muffling box is airtight box body, and in sound-muffling box, filling has silencing cotton.
Utilize the method as aforementioned mainboard audio loop proving installation testing host audio loop, comprise following test process:
A, integrated test system are powered to hummer, and coordinate test software to drive the work of mainboard audio loop, hummer are placed in the microphone end of mainboard audio loop, are connected by the audio signal output end of mainboard audio loop with loudspeaker;
B, hummer sounding provide stable sound signal to the microphone end of mainboard audio loop, this sound signal is after the process of mainboard audio loop, export loudspeaker to from the audio signal output end of mainboard audio loop, reduce this sound signal carry out simulation sounding by loudspeaker;
The wheat head of c, audio-switch collects the voice signal that loudspeaker sends in sound-muffling box, and the LED display lamp through circuit conversion rear drive audio-switch is luminous, and wherein the luminosity of LED display lamp is corresponding with the voice signal size that wheat head is collected;
D, photoresistance obtain corresponding resistance after monitoring the luminance of LED display lamp and are fed back to integrated test system, and the resistance of wherein photoresistance is corresponding with the luminosity of LED display lamp;
The resistance of the photoresistance got is fed back to test software by e, integrated test system, by test software to rear, itself and demarcation resistance value ratio is judged that whether the work of mainboard audio loop is normal.
Adopt after technique scheme, the present invention compared to the prior art advantageously:
Direct modeling mainboard audio loop work of the present invention, loudspeaker is connected at the audio signal output end of mainboard audio loop, the high-efficient automatic of mainboard audio loop is tested with realization by sound-optical-electricity conversion in testing process, wherein sound-optical conversion ensure that testing reliability, light-electricity conversion ensure that test high efficiency and accuracy, it covers all devices of mainboard audio loop in test process, avoids situation about judging by accident in conventional testing techniques to occur.And described integrated test system is the integrated test system in existing measuring technology, effectively can utilize existing resource, compatible good, cost of manufacture is low.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described:
Fig. 1 is the structural representation of the audio loop described in background technology.
Fig. 2 is 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 display lamp; 7: photoresistance; 8: hummer.
Embodiment
The following stated is only preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.
Embodiment, as shown in Figure 2.
A kind of mainboard audio loop proving installation, comprise integrated test system 1, sound-muffling box 2, loudspeaker 3, audio-switch, photoresistance 7 and hummer 8, audio-switch comprises the wheat that is sequentially electrically connected 4, sensitivity control 5 and LED display lamp 6, a wheat large I reaction of 4 collection voice signal is on the luminosity of rear end LED display lamp 6, thus can identification voice signal whether up to standard, sensitivity control 5 effect regulates according to the wheat luminosity of 4 collection voice signals to LED display lamp 6, make the luminosity of LED display lamp 6 can react a wheat 4 collection voice signal size more exactly, audio-switch is provided with power access end, audio-switch is electrically connected with the outer power supply source of stable operating voltage by this power access end, think that LED display lamp 6 is powered, the voltage of outer power supply source needs to arrange separately and needs to keep stable, to ensure that test accurately, the USB port 5V of boards and blocks of computers such as can be directly used to power, photoresistance 7 and hummer 8 are electrically connected with integrated test system 1 respectively, the feedback signal of integrated test system 1 for powering to hummer 8 and for receiving photoresistance 7, loudspeaker 3 and wheat 4 is arranged in sound-muffling box 2, sound-muffling box 2 is airtight box body, in sound-muffling box 2, filling has silencing cotton, silencing cotton plays the effect of fixed bin body inner body and the interference of isolated external sound, to improve test accuracy, photoresistance 7 is corresponding with LED display lamp 6 to be arranged, photoresistance 7 is used for monitoring audio-switch LED state, LED luminance directly determines photoresistance 7 resistance size, LED display lamp 6 and photoresistance 7 can be arranged at sound-muffling box 2 inside also can be arranged on sound-muffling box 2 outside, LED display lamp 6 and photoresistance 7 be arranged at sound-muffling box 2 inner time photoresistance 7 can not be subject to extraneous illumination effect, it is more accurate to test, LED display lamp 6 and photoresistance 7 are arranged at sound-muffling box 2 outside then can sound-optical transfer process intuitively in control and measuring process, test more reliable.
Utilize the method as aforementioned mainboard audio loop proving installation testing host audio loop, comprise following test process:
A, integrated test system 1 are powered to hummer 8, and coordinate test software to drive the work of mainboard audio loop, hummer 8 are placed in the microphone end of mainboard audio loop, are connected by the audio signal output end of mainboard audio loop with loudspeaker 3;
B, hummer 8 sounding provide stable sound signal to the microphone end of mainboard audio loop, this sound signal is after the process of mainboard audio loop, export loudspeaker 3 to from the audio signal output end of mainboard audio loop, reduce this sound signal carry out simulation sounding by loudspeaker 3;
The wheat of c, audio-switch 4 collects the voice signal that loudspeaker 3 sends in sound-muffling box 2, and the LED display lamp 6 through circuit conversion rear drive audio-switch is luminous, and wherein the luminosity of LED display lamp 6 is corresponding with a wheat 4 voice signal size collected;
D, photoresistance 7 obtain corresponding resistance after monitoring the luminance of LED display lamp 6 and are fed back to integrated test system 1, and the resistance of wherein photoresistance 7 is corresponding with the luminosity of LED display lamp 6;
The resistance of the photoresistance 7 got is fed back to test software by e, integrated test system 1, by test software to rear, itself and demarcation resistance value ratio is judged that whether the work of mainboard audio loop is normal.
Direct modeling mainboard audio loop work of the present invention, loudspeaker 3 is connected at the audio signal output end of mainboard audio loop, the high-efficient automatic of mainboard audio loop is tested with realization by sound-optical-electricity conversion in testing process, wherein sound-optical conversion ensure that testing reliability, light-electricity conversion ensure that test high efficiency and accuracy, it covers all devices of mainboard audio loop in test process, avoids situation about judging by accident in conventional testing techniques to occur.And described integrated test system 1 is the integrated test system 1 in existing measuring technology, effectively can utilize existing resource, compatible good, cost of manufacture is low.
The above is only better embodiment of the present invention, therefore all equivalences done according to structure, feature and the principle described in patent claim of the present invention change or modify, and are included in patent claim of the present invention.
Claims (5)
1. a mainboard audio loop proving installation, it is characterized in that: comprise integrated test system, sound-muffling box, loudspeaker, audio-switch, photoresistance and hummer, audio-switch comprises wheat head and the LED display lamp of electrical connection, photoresistance and hummer are electrically connected with integrated test system respectively, the feedback signal of integrated test system for powering to hummer and for receiving photoresistance, loudspeaker and wheat head are arranged in sound-muffling box, and photoresistance is corresponding with LED display lamp to be arranged.
2. mainboard audio loop proving installation according to claim 1, is characterized in that: audio-switch is provided with power access end, and audio-switch is electrically connected with the outer power supply source of stable operating voltage by this power access end.
3. mainboard audio loop proving installation according to claim 1, is characterized in that: audio-switch also includes the sensitivity control be arranged between wheat head and LED display lamp.
4. mainboard audio loop proving installation according to claim 1, is characterized in that: sound-muffling box is airtight box body, and in sound-muffling box, filling has silencing cotton.
5. utilize as arbitrary in claim 1-4 as described in the method for mainboard audio loop proving installation testing host audio loop, comprise following test process:
A, integrated test system are powered to hummer, and coordinate test software to drive the work of mainboard audio loop, hummer are placed in the microphone end of mainboard audio loop, are connected by the audio signal output end of mainboard audio loop with loudspeaker;
B, hummer sounding provide stable sound signal to the microphone end of mainboard audio loop, this sound signal is after the process of mainboard audio loop, export loudspeaker to from the audio signal output end of mainboard audio loop, reduce this sound signal carry out simulation sounding by loudspeaker;
The wheat head of c, audio-switch collects the voice signal that loudspeaker sends in sound-muffling box, and the LED display lamp through circuit conversion rear drive audio-switch is luminous, and wherein the luminosity of LED display lamp is corresponding with the voice signal size that wheat head collects;
D, photoresistance obtain corresponding resistance after monitoring the luminance of LED display lamp and by it instead to integrated test system, the resistance of wherein photoresistance is corresponding with the luminosity of LED display lamp;
The resistance of the photoresistance got is fed back to test software by e, integrated test system, by test body to rear, itself and demarcation resistance value ratio is judged that whether the work of mainboard audio loop is normal.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN106679794A (en) * | 2015-11-10 | 2017-05-17 | 上海凡卓软件开发技术有限公司 | Motherboard motor drive circuit test system and test method |
| 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 |
| CN113347548A (en) * | 2021-05-31 | 2021-09-03 | 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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| CN113347548A (en) * | 2021-05-31 | 2021-09-03 | 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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| CN104569788B (en) | 2018-03-30 |
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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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