CN111031464A - Microphone testing method, system, electronic device and storage medium - Google Patents
Microphone testing method, system, electronic device and storage medium Download PDFInfo
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- CN111031464A CN111031464A CN201911275493.9A CN201911275493A CN111031464A CN 111031464 A CN111031464 A CN 111031464A CN 201911275493 A CN201911275493 A CN 201911275493A CN 111031464 A CN111031464 A CN 111031464A
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- 238000012360 testing method Methods 0.000 title claims abstract description 139
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/004—Monitoring arrangements; Testing arrangements for microphones
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Abstract
The invention discloses a microphone testing method, which is applied to a microphone testing system and comprises the steps of plugging a microphone sound hole of a microphone to be tested by using a shielding film; the shielding cover covers the microphone to be tested and the loudspeaker together to form a closed space; inserting a microphone to be tested into a probe on a carrier plate; the industrial personal computer sends a signal to the power amplifier board and sounds through the loudspeaker, the microphone to be tested converts the sound into an electric signal, and the test board card measures the voltage value of the electric signal converted by the microphone to be tested; the test board card feeds the measured voltage value back to the industrial personal computer, the industrial personal computer compares the voltage value with a normal value, and if the voltage value is larger than the normal value, the problem of ring breakage occurs. The test efficiency is high, and the test integrated level is high, saves space, manpower, and automatic test, very big reduction is to the reliance of manpower, and the timeliness is high, and the operation is simple and easy, low cost. The invention also discloses a microphone testing system, electronic equipment and a storage medium.
Description
Technical Field
The present invention relates to the field of testing, and in particular, to a microphone testing method, system, electronic device, and storage medium.
Background
At present, with the increasing update of science and technology, the integration level of consumer products such as mobile phones and the like is higher and higher, and the requirement on the utilization rate of the whole space is also higher and higher. At this point, optimization integration of the PCBA is required to meet new testing requirements. The voice quality of the microphone is always a key concern of products such as mobile phones, and the broken ring test, the ICT and the FCT are basic test contents of the PCBA. Therefore, a test scheme that combines these two functions becomes a new requirement. At present, most of the microphone broken loop detection in the market is completed by using an electroacoustic test system (Sound Check) or an audio analyzer (audio precsion, abbreviated as AP). ICT (in-line electrical performance testing) and FCT (electronic circuit functionality testing) are then accomplished by customizing the test equipment or fixture.
However, the existing microphone testing process has the following defects:
1. at present, the test efficiency is low when the customized equipment is used for testing.
2. The equipment cost for the broken ring test of the microphone is high, independent test is needed, and space and manpower are occupied.
3. The training of the skill before the post of the worker is complex, the requirement on the worker is higher, and the popularization is not suitable.
4. The test efficiency is low, and the consumption cost is high.
Disclosure of Invention
In order to overcome the disadvantages of the prior art, an object of the present invention is to provide a microphone testing method, a microphone testing system, an electronic device and a storage medium, which can solve the problem of low testing efficiency.
One of the purposes of the invention is realized by adopting the following technical scheme:
a microphone test method is applied to a microphone test system and comprises a power amplifier board, a loudspeaker, a shielding case, a microphone module, a carrier board, a test board card and an industrial personal computer, wherein the power amplifier board is in communication connection with the loudspeaker, a test point of a microphone to be tested is in contact with the carrier board, and the microphone module, the microphone to be tested and the test board card establish communication, and the microphone test method comprises the following steps:
coating: plugging a microphone sound hole of a microphone to be tested by using a shielding film;
covering: the shielding cover covers the microphone to be tested and the loudspeaker together to form a closed space;
a connection step: inserting a microphone to be tested into a probe on a carrier plate;
the testing steps are as follows: the industrial personal computer sends a signal to the power amplifier board and sounds through the loudspeaker, the microphone to be tested converts the sound into an electric signal, and the test board card measures the voltage value of the telecommunication signal converted by the microphone to be tested;
a transmission step: the test board card feeds the measured voltage value back to the industrial personal computer, the industrial personal computer compares the voltage value with a normal value, and if the voltage value is larger than the normal value, the problem of ring breakage occurs.
Further, the microphone testing method further comprises a sound monitoring step: monitoring whether a loudspeaker occurs or not through a microphone module, and if so, executing the next step; the sound monitoring step is located between the testing step and the transmitting step.
Further, in the covering step, the loudspeaker just emits sound to the microphone to be tested.
Further, in the testing step, the power amplifier board amplifies the audio signal sent by the industrial personal computer and provides the amplified audio signal to the loudspeaker to send out sounds with different frequencies.
Further, in the testing step, the industrial personal computer sequentially provides sounds with three different frequencies of 100 Hz, 300 Hz and 500 Hz.
Further, in the transmission step, if the voltage value is smaller than a normal value, it is determined that the microphone to be tested has no broken ring problem.
Further, the microphone testing method further comprises a secondary testing step: and continuously carrying out on-line electrical performance test on the microphone to be tested.
A microphone test system comprises a power amplifier board, a loudspeaker, a shielding case, a microphone module, a carrier board, a test board card and an industrial personal computer, wherein the power amplifier board is in communication connection with the loudspeaker, a test point of a microphone to be tested is in contact with the carrier board, the microphone module, the microphone to be tested and the test board card are in communication, a microphone sound hole of the microphone to be tested is plugged by a shielding film, the microphone to be tested and the loudspeaker cover are arranged together by the shielding case to form a closed space, the microphone to be tested is plugged with a probe on the carrier board, the industrial personal computer sends a signal to the power amplifier board and produces sound through the loudspeaker, the test microphone converts sound into an electric signal, the test board card measures the voltage value of the electric signal converted by the microphone to be tested, and the test board card feeds back the measured voltage value to the industrial personal computer, the industrial personal computer compares the voltage value with a normal value, and if the voltage value is larger than the normal value, the problem of broken ring occurs.
An electronic device, comprising: a processor;
a memory; and a program, wherein the program is stored in the memory and configured to be executed by the processor, the program comprising instructions for performing a microphone testing method.
A computer-readable storage medium having stored thereon a computer program for executing a microphone testing method by a processor.
Compared with the prior art, the invention has the beneficial effects that:
the industrial personal computer sends a signal to the power amplifier board and sounds through the loudspeaker, the microphone to be tested converts the sound into an electric signal, and the test board card measures the voltage value of the electric signal converted by the microphone to be tested; the test board card feeds the measured voltage value back to the industrial personal computer, the industrial personal computer compares the voltage value with a normal value, and if the voltage value is larger than the normal value, the problem of ring breakage occurs. If the voltage value is smaller than the normal value, the problem that the microphone to be tested has no broken ring is judged. The test efficiency is high, and the test integrated level is high, saves space, manpower, and automatic test, very big reduction is to the reliance of manpower, and the timeliness is high, and the operation is simple and easy, low cost.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a perspective view of a microphone testing method according to a preferred embodiment of the present invention;
fig. 2 is a schematic diagram of a microphone module.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, wherein it is to be noted that any combination of the following described embodiments or technical features may be adopted to form new embodiments without conflict.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-2, a microphone testing method applied to a microphone testing system includes a power amplifier board, a speaker, a shielding case, a microphone module, a carrier board, a testing board card and an industrial control machine, where the power amplifier board is in communication with the speaker, a testing point of a microphone to be tested is in contact with the carrier board, and the microphone module, the microphone to be tested and the testing board card establish communication, including the following steps:
coating: plugging a microphone sound hole of a microphone to be tested by using a shielding film;
covering: the shielding cover covers the microphone to be tested and the loudspeaker together to form a closed space; in the covering step, the loudspeaker just gives out sound to the microphone to be tested.
A connection step: inserting a microphone to be tested into a probe on a carrier plate;
the testing steps are as follows: the industrial personal computer sends a signal to the power amplifier board and sounds through the loudspeaker, the microphone to be tested converts the sound into an electric signal, and the test board card measures the voltage value of the telecommunication signal converted by the microphone to be tested; in the testing step, the power amplification board amplifies the audio signal sent by the industrial personal computer and provides the amplified audio signal for the loudspeaker to send out sounds with different frequencies. In the testing step, the industrial control machine provides sounds with three different frequencies of 100 Hz, 300 Hz and 500 Hz in sequence.
A transmission step: the test board card feeds the measured voltage value back to the industrial personal computer, the industrial personal computer compares the voltage value with a normal value, and if the voltage value is larger than the normal value, the problem of ring breakage occurs. In the transmission step, if the voltage value is smaller than a normal value, the problem that the microphone to be tested has no broken ring is judged. The test efficiency is high, and the test integrated level is high, saves space, manpower, and automatic test, very big reduction is to the reliance of manpower, and the timeliness is high, and the operation is simple and easy, low cost.
Specifically, in the actual implementation process, the microphone testing method further includes a sound monitoring step: monitoring whether a loudspeaker occurs or not through a microphone module, and if so, executing the next step; the sound monitoring step is located between the testing step and the transmitting step. A microphone module: the core is MAX9814 produced by American trusted semiconductors (MAXIM), which is a low-cost high-performance microphone amplifier having a low-noise front-end amplifier, a Variable Gain Amplifier (VGA), an output amplifier, a microphone bias voltage generator, and an Automatic Gain Control (AGC) control circuit. The test board card is used for judging whether the loudspeaker and the front end device thereof make sound or not and avoiding errors caused by manual judgment.
In the implementation process, the core of the power amplifier board is a TDA7297 dual-channel power amplifier chip. The power supply is set to be supplied with direct current 12V and outputs power of 15W + 15W. And a knob type adjustable resistor is arranged to realize volume control. The industrial personal computer is responsible for receiving different frequency audio signals provided by the industrial personal computer, amplifying the audio signals and then outputting the audio signals to the loudspeaker, and the loudspeaker makes sound.
Preferably, the microphone testing method further comprises a secondary testing step: and continuously carrying out online electrical property test on the microphone to be tested. During the application process, the test board is provided with an output power supply by a digital-to-analog converter (DAC) AD5686 (ADI). And then a test point selection circuit is formed by a relay array, selected test point signals are subjected to gain (amplification factor) selection by software through an instrumentation amplifier AD8253(ADI), direct current signals and alternating current signals are switched through a single-pole double-throw switch ADG4149(ADI), the direct current signals are sent to a differential amplifier AD8475(ADI) for single-end differential conversion, the alternating current signals are sent to a root-mean-square direct current converter AD637(ADI) to be converted into root-mean-square voltage signals, and then the root-mean-square voltage signals enter different ports of a multi-channel ADC chip AD7175(ADI) to convert analog voltage values into digital quantities. And then the data are transmitted to a singlechip STM32F103ZET6(ST) through an SPI communication interface, the data are converted into proper units through an algorithm, then a product test result (Pass or Fail) is judged according to test data, and the measurement data and the result are transmitted to an industrial personal computer through a serial port UART.
A microphone test system comprises a power amplifier board, a loudspeaker, a shielding case, a microphone module, a carrier board, a test board card and an industrial personal computer, wherein the power amplifier board is in communication connection with the loudspeaker, a test point of a microphone to be tested is in contact with the carrier board, the microphone module, the microphone to be tested and the test board card are in communication, a microphone sound hole of the microphone to be tested is plugged by a shielding film, the microphone to be tested and the loudspeaker cover are arranged together by the shielding case to form a closed space, the microphone to be tested is plugged with a probe on the carrier board, the industrial personal computer sends a signal to the power amplifier board and produces sound through the loudspeaker, the test microphone converts sound into an electric signal, the test board card measures the voltage value of the electric signal converted by the microphone to be tested, and the test board card feeds back the measured voltage value to the industrial personal computer, the industrial personal computer compares the voltage value with a normal value, and if the voltage value is larger than the normal value, the problem of broken ring occurs.
Specifically, the test principle is as follows: the test board card sends a 'Leak _ 100' instruction to the industrial personal computer, the audio interface of the industrial personal computer sends a 100 Hz audio signal to the loudspeaker, and the test board card performs sound detection on the loudspeaker. When the microphone broken ring test is carried out, the test board card sends a 'Leak _ 100' instruction to the industrial personal computer, the industrial personal computer audio interface sends a 100 Hz audio signal to carry out a 100 Hz broken ring test, the test board card sends a 'Leak _ 300' instruction to the industrial personal computer after the 100 Hz test is completed, the industrial personal computer audio interface sends a 300 Hz audio signal to carry out a 300 Hz broken ring test, the test board card sends a 'Leak _ 500' instruction to the industrial personal computer after the 300 Hz test is completed, the industrial personal computer audio interface sends a 500 Hz audio signal to carry out a 500 Hz broken ring test, the test board card sends a 'Leak _ 0' instruction to the industrial personal computer after the three broken ring tests are completed, and the industrial personal computer closes the audio signal. And the test board card subsequently performs other ICT and FCT tests, after all tests are completed, the test board card transmits test data, judgment and other information of the test result to the industrial personal computer, and the industrial personal computer displays the information and determines the next action according to the test result.
The application also discloses an electronic device, including: a processor;
a memory; and a program, wherein the program is stored in the memory and configured to be executed by the processor, the program comprising instructions for performing a microphone testing method.
The present application also discloses a computer-readable storage medium having stored thereon a computer program for execution by a processor of a microphone testing method.
The above embodiments are merely preferred embodiments of the present invention, and the scope of the present invention should not be limited thereto, and any non-essential changes and substitutions made by those skilled in the art on the basis of the present invention are within the scope of the present invention as claimed.
Claims (10)
1. A microphone testing method is applied to a microphone testing system and comprises a power amplifier board, a loudspeaker, a shielding case, a microphone module, a carrier board, a testing board card and an industrial personal computer, wherein the power amplifier board is in communication connection with the loudspeaker, a testing point of a microphone to be tested is in contact with the carrier board, and the microphone module, the microphone to be tested and the testing board card establish communication, and is characterized by comprising the following steps:
coating: plugging a microphone sound hole of a microphone to be tested by using a shielding film;
covering: the shielding cover covers the microphone to be tested and the loudspeaker together to form a closed space;
a connection step: inserting a microphone to be tested into a probe on a carrier plate;
the testing steps are as follows: the industrial personal computer sends a signal to the power amplifier board and sounds through the loudspeaker, the microphone to be tested converts the sound into an electric signal, and the test board card measures the voltage value of the electric signal converted by the microphone to be tested;
a transmission step: the test board card feeds the measured voltage value back to the industrial personal computer, the industrial personal computer compares the voltage value with a normal value, and if the voltage value is larger than the normal value, the problem of ring breakage occurs.
2. The microphone testing method of claim 1, wherein: the microphone testing method further comprises the following sound monitoring step: monitoring whether a loudspeaker occurs or not through a microphone module, and if so, executing the next step; the sound monitoring step is located between the testing step and the transmitting step.
3. The microphone testing method of claim 1, wherein: in the covering step, the loudspeaker just gives out sound to the microphone to be tested.
4. The microphone testing method of claim 1, wherein: in the testing step, the power amplification board amplifies the audio signal sent by the industrial personal computer and provides the amplified audio signal to the loudspeaker to send out sounds with different frequencies.
5. The microphone testing method of claim 4, wherein: in the testing step, the industrial personal computer sequentially provides sounds with three different frequencies of 100 Hz, 300 Hz and 500 Hz.
6. The microphone testing method of claim 1, wherein: in the transmission step, if the voltage value is smaller than a normal value, the problem that the microphone to be tested has no broken ring is judged.
7. The microphone testing method of claim 1, wherein: the microphone testing method also comprises a secondary testing step: and continuously carrying out online electrical property test on the microphone to be tested.
8. A microphone testing system, characterized by: the testing device comprises a power amplifier board, a loudspeaker, a shielding cover, a microphone module, a carrier board, a testing board card and an industrial personal computer, wherein the power amplifier board is in communication connection with the loudspeaker, a testing point of a microphone to be tested is in contact with the carrier board, the microphone module, the microphone to be tested and the testing board card are in communication, a shielding film blocks a microphone sound hole of the microphone to be tested, the shielding cover covers the microphone to be tested and the loudspeaker together to form a closed space, the microphone to be tested is inserted into a probe on the carrier board, the industrial personal computer sends a signal to the power amplifier board and produces sound through the loudspeaker, the testing microphone converts sound into an electric signal, the testing board card measures the voltage value of the electric signal converted by the microphone to be tested, the testing board card feeds the measured voltage value back to the industrial personal computer, and the industrial personal computer compares the voltage value with a normal value, if the voltage value is larger than the normal value, the ring breaking problem occurs.
9. An electronic device, characterized by comprising: a processor;
a memory; and a program, wherein the program is stored in the memory and configured to be executed by the processor, the program comprising instructions for carrying out the method of any one of claims 1-7.
10. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program is executed by a processor for performing the method according to any of claims 1-7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911275493.9A CN111031464A (en) | 2019-12-12 | 2019-12-12 | Microphone testing method, system, electronic device and storage medium |
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| CN201911275493.9A CN111031464A (en) | 2019-12-12 | 2019-12-12 | Microphone testing method, system, electronic device and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113709648A (en) * | 2021-08-27 | 2021-11-26 | 重庆紫光华山智安科技有限公司 | Microphone and loudspeaker collaborative testing method, system, medium and electronic terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113709648A (en) * | 2021-08-27 | 2021-11-26 | 重庆紫光华山智安科技有限公司 | Microphone and loudspeaker collaborative testing method, system, medium and electronic terminal |
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Application publication date: 20200417 |