CN104601769B - A kind of cell phone mainboard automated audio test system - Google Patents

Abstract

The invention discloses an automatic audio testing system for a mainboard of a mobile phone, which comprises a mobile phone board to be tested, an auxiliary mobile phone board and a PC. Connect with the mobile phone board to be tested and the auxiliary mobile phone board, and the PC controls the mobile phone board to be tested and the auxiliary mobile phone board to record and playback each other and transmit the recorded sound to the PC. An audio analysis module is provided, and the audio analysis module judges whether the recording and playback equipment of the mobile phone board to be tested is normal by analyzing and comparing the recorded sound. The technical scheme of the present invention completes the automatic testing of the audio frequency of the mainboard of the mobile phone through the mutual cooperation of the mainboard of the machine to be tested and the mainboard of the auxiliary machine. efficiency.

Description

An automated audio testing system for mobile phone motherboards

technical field

The invention belongs to the field of electronic testing, relates to a mobile phone main board test, in particular to a factory mobile phone main board test and an automatic audio testing system.

Background technique

At present, the audio test of the mobile phone motherboard in the factory is mainly measured manually. The method is to manually open the audio test software on the mobile phone to record and play the sound, and then judge the result by human ears. This manual test method is the most primitive test method, which is relatively labor-intensive, and the judgment standard is greatly affected by human factors.

In addition, the patent application CN201020573476.1 discloses a simple bionic audio test device, which can perform audio tests on mobile phones and other equipment. This method interconnects the mobile phone motherboard with the PC through the middle isolation coupling loop to process the sound information, and finally the PC The board on the machine collects and analyzes sound information.

Patent application CN201210253981.1 discloses a mobile phone audio quick test device, which is mainly for quick testing of mobile phone audio, and external devices such as artificial ears and artificial mouths need to be added. The artificial mouth plays the sound, and then the mobile phone records to verify the MIC function. Artificial ear recording, mobile phone speaker or earpiece playback to realize the speaker and earpiece playback test, and then analyze the sound.

Patent application CN201210152861.2 discloses an automatic fixture device for mobile phone audio testing. The fixture is an artificial mouth and artificial ear fixed on an L-shaped frame for simulation testing. The principle of use of this invention is similar to the method described in patent application CN201210253981.1. .

But the shortcoming of above-mentioned existing mobile phone motherboard test is to need to add the external equipment such as artificial ear, artificial mouth, and these equipments are generally more expensive; Or add some sound collection and analysis boards, the price of this boards is just more expensive . However, the mobile phone audio test automatic fixture device of patent application CN201210152861.2 needs a mechanical structure, and adding a mechanical structure will cause the test fixture to generate vibration noise, which will affect the accuracy of the test.

Contents of the invention

In view of this, the present invention completes the automatic test of the audio frequency of the mobile phone main board through a main board of the machine to be tested and an auxiliary machine main board through the process of mutual cooperation. Reduced labor costs and improved test efficiency.

In order to achieve the above object, the specific technical scheme is as follows:

A mobile phone motherboard automated audio testing system, comprising a mobile phone board to be tested, an auxiliary mobile phone board and a PC, the mobile phone board to be tested and the auxiliary mobile phone board are respectively provided with recording and playback equipment, and the PC is connected to the waiting phone board respectively The test mobile phone board is connected with the auxiliary mobile phone board, and the PC controls the mutual recording and playback of the mobile phone board to be tested and the auxiliary mobile phone board and transmits the recorded sound to the PC, which is provided with audio analysis module, the audio analysis module judges whether the recording and playback equipment of the mobile phone board to be tested is normal by analyzing and comparing the recorded sound.

Preferably, the sound recording and playback equipment includes an earphone jack, a microphone (MIC), an earpiece and a loudspeaker.

Preferably, a first soundproof box is also included, and the microphone of the mobile phone board to be tested and the speaker of the auxiliary mobile phone board are placed in the first soundproof box for recording and playback.

Preferably, a second soundproof box is also included, and the earpiece of the mobile phone board to be tested and the microphone of the auxiliary mobile phone board are placed in the second soundproof box for recording and playback.

Preferably, the speaker of the mobile phone board to be tested and the microphone of the auxiliary mobile phone board are placed in the second soundproof box for sound recording and playback.

Preferably, the earphone socket includes an earphone microphone and an earphone receiver, the mobile phone board to be tested is connected to the earphone socket of the auxiliary mobile phone board, and the PC controls the earphone microphone and the earphone of the mobile phone board to be tested and the auxiliary mobile phone board The earpieces record and play each other.

Preferably, the frequency of the sound played by the PC to control the mobile phone board under test and the auxiliary mobile phone board is 600-1000 Hz.

Preferably, the format of the sound recorded by the PC to control the mobile phone board to be tested and the auxiliary mobile phone board is ACC.

Preferably, the audio analysis module in the PC performs analysis and comparison after transcoding the audio in ACC format into WAV format.

Preferably, the PC is respectively connected to the mobile phone board to be tested and the auxiliary mobile phone board through USB cables.

Compared with the prior art, the technical solution of the present invention has the following advantages:

1. The present invention realizes the audio automation test of the main board of the smart phone, reduces the labor cost and improves the test efficiency;

2. Short development cycle, quick results, high versatility, and low cost;

3. Since the judgment of all test items is completed by the computer, the test results are true and reliable, and the false detection rate is low.

Description of drawings

The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is the structural representation of the mobile phone board to be tested and the auxiliary mobile phone board connection of the embodiment of the present invention;

Fig. 3 is a schematic structural diagram of an auxiliary test box according to an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

Embodiments of the present invention will be specifically explained below in conjunction with the accompanying drawings.

As shown in Fig. 1, a kind of automatic audio frequency test system of the main board of the mobile phone of the embodiment of the present invention is applicable to the production audio test stage of the main board and the complete machine of the mobile phone test in the factory and other similar mobile terminal products, including the mobile phone board to be tested 110 , auxiliary mobile phone board 108 and PC machine 100 . The mobile phone board 110 to be tested and the auxiliary mobile phone board 108 are all provided with recording and playback equipment.

The PC 100 is connected to the mobile phone board 110 to be tested and the auxiliary mobile phone board 108 respectively. The PC 100 controls the mobile phone board 110 to be tested and the auxiliary mobile phone board 108 to record and playback each other and transmit the recorded sound to the PC 100 . The PC 100 is provided with an audio analysis module, and the audio analysis module judges whether the recording and playback equipment of the mobile phone board 110 to be tested is normal by analyzing and comparing the recorded sound.

The embodiment of the present invention completes the automatic test of the audio frequency of the main board of the mobile phone through a process of mutual cooperation between a main board of the machine to be tested and an auxiliary main board. Reduce labor costs and improve test efficiency.

As shown in FIG. 1 , in the embodiment of the present invention, it preferably includes a motherboard fixture 103 , and an auxiliary test box 104 is mounted under the fixture 103 to store an auxiliary mobile phone board 108 . The mobile phone board 110 to be tested and the auxiliary mobile phone board 108 complete the entire testing process by playing and recording each other and uploading the recording file to the PC 100 for algorithm analysis when testing each audio item.

The whole testing process can test the audio circuit of the mobile phone automatically through the software control on the PC 100 and throw the sound information to the PC 100, and the software on the PC 100 can quickly analyze and judge whether the audio circuit is normal.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , in the embodiment of the present invention, the audio recording and playback equipment includes a microphone MIC, an earpiece, a loudspeaker and an earphone jack. Among them, the tests of microphone MIC, receiver and speaker include:

1. MIC test

The PC 100 end sends the playback instruction to the auxiliary mobile phone board 108 through the USB line 101 to activate the pre-installed sound playback program on the auxiliary mobile phone board 108, so that the external speaker drawn by the speaker contact probe 112 on the auxiliary mobile phone board 108 is in the Sound is played in the first soundproof box 120, and the sound played is a pre-recorded 800 Hz fixed frequency sound wave.

At the same time, the PC 100 sends a recording command to the mobile phone board 110 to be tested through the USB line 102, activates the pre-installed recording program on the mobile phone board 110 to be tested, and makes the mobile phone board 110 to be tested pass through the MIC contact probe 117. Record in the first soundproof box 1120 with an external MIC.

After the machine under test records a sound, save the sound file in ACC format, and then copy the sound file to the PC from the PC. Transcode the sound file first, and convert the ACC format sound file into a WAV format file. Then apply the algorithm to analyze and calculate the frequency and amplitude of the sound, compare the calculated value with the normal sound value, and then judge whether the MIC of the mobile phone board under test is functioning normally.

2. Speaker test

From the PC 100 end to the mobile phone board 110 to be tested, send a playback command through the USB line 102, activate the pre-installed playback program on the mobile phone main board 110 to be tested, so that the audio on the mobile phone board 110 to be tested is drawn through the speaker contact probe 115. The external speaker played in the second soundproof box 121, the sound played is a pre-recorded sound wave with a fixed frequency of 800 Hz.

At the same time, the PC 100 end sends recording instructions to the auxiliary mobile phone board 108 through the USB line 101, activates the recording program pre-installed on the auxiliary mobile phone board 108, and makes the external MIC drawn by the MIC contact probe 113 on the auxiliary mobile phone board 108. Recording is performed in the second soundproof box 121 .

When the auxiliary test mobile phone board records a sound, save the sound file in ACC format, and then copy the sound file to the PC on the PC side. Transcode the sound file first, and convert the ACC format sound file into a WAV format file. Then apply the algorithm to analyze and calculate the frequency and amplitude of the sound, compare the calculated value with the normal sound value, and then judge whether the speaker of the mobile phone board under test is functioning normally.

3. Handset test

The PC 100 sends a playback instruction to the mobile phone board 110 to be tested through the USB cable 102 to activate the pre-installed playback program on the mobile phone board 110 to be tested. The external speaker drawn by the earpiece contact probe 116 on the mobile phone board 110 to be tested is played in the second soundproof box 121, and the sound played is a pre-recorded 800Hz fixed frequency sound wave.

At the same time, the PC 100 end sends recording instructions to the auxiliary mobile phone board 111 through the USB line 101, activates the pre-installed recording program on the auxiliary mobile phone board 108, and makes the external MIC drawn by the MIC contact probe 113 on the auxiliary mobile phone board 108. Recording is performed in the second soundproof box 121 .

When the auxiliary test mobile phone board records a sound, save the sound file in ACC format, and then copy the sound file to the PC on the PC side. Transcode the sound file first, and convert the ACC format sound file into a WAV format file. Then apply the algorithm to analyze and calculate the frequency and amplitude of the sound, compare the calculated value with the normal sound value, and then judge whether the main earpiece of the board under test is functioning normally.

As shown in Fig. 1 and Fig. 2, in the embodiment of the present invention, the test of the headphone jack in the audio recording and playback device is different from the above-mentioned three kinds of audio device function tests.

The headphone jack includes a headphone microphone and a headphone receiver. As shown in FIG. 2 , the test is directly connected to the mobile phone board 108 to be tested and the auxiliary mobile phone board 108 through a special earphone cable 119 . There is no conversion of electrical signals and acoustic signals during the entire test process, and the test is completely transmitted through the electrical signals of the main board of the mobile phone to be tested and the main board of the auxiliary test mobile phone. As shown in Figure 1, specifically include:

1. Headphone MIC test

The earphone playback command is sent from the PC 100 to the auxiliary mobile phone board 108 through the USB line 101 to activate the pre-installed earphone playback program on the auxiliary mobile phone board 108, so that the earphone receiver on the auxiliary mobile phone board 108 outputs an electrical signal for playback. Sound, the sound played is a pre-recorded 800Hz fixed frequency sound wave.

At the same time, the PC 100 end sends the earphone recording instruction to the mobile phone board 110 to be tested through the USB line 102, activates the earphone MIC recording program pre-installed on the mobile phone board 110 to be tested, and makes the mobile phone board 110 earphones to record, that is, to receive the audio Signal recording.

When the mobile phone under test records a sound, save the sound file in ACC format, and then copy the sound file to the PC on the PC side. Transcode the sound file first, and convert the ACC format sound file into a WAV format file. Then apply the algorithm to analyze and calculate the frequency and amplitude of the sound, compare the calculated value with the normal sound value, and then judge whether the headphone MIC of the main board of the mobile phone under test is functioning normally.

2. Headphone receiver test

By the PC 100 end to the mobile phone board 110 to be tested, the playback command is sent to the mobile phone board 110 through the USB line 102 to activate the earphone earpiece playback program pre-installed on the mobile phone board 110 to be tested, so that the earphone receiver of the mobile phone board 110 to be tested is played. The sound is a pre-recorded 800Hz fixed frequency sound wave.

Simultaneously, the PC 100 end sends a recording command to the auxiliary mobile phone board 111 through the USB line 101, activates the earphone MIC recording program pre-installed on the auxiliary mobile phone board 108, and makes the auxiliary mobile phone board 108 earphone MIC record.

When the auxiliary test mobile phone board records a sound, save the sound file in ACC format, and then copy the sound file to the PC on the PC side. Transcode the sound file first, and convert the ACC format sound file into a WAV format file. Then apply the algorithm to analyze and calculate the frequency and amplitude of the sound, compare the calculated value with the normal sound value, and then judge whether the earpiece is functioning normally.

The specific embodiments of the present invention have been described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to the present invention are also within the scope of the present invention. Therefore, equivalent changes and modifications made without departing from the spirit and scope of the present invention shall fall within the scope of the present invention.

Claims (1)

1. a mobile phone main board automatic audio frequency test system, is characterized in that, comprises mobile phone board to be tested, auxiliary mobile phone board and PC, described mobile phone board to be tested and auxiliary mobile phone board are provided with recording and playback equipment respectively, and described PC The mobile phone board is connected with the mobile phone board to be tested and the auxiliary mobile phone board respectively, and the PC controls the mobile phone board to be tested and the auxiliary mobile phone board to record and play each other and transmit the recorded sound to the PC, and the PC An audio analysis module is provided in the machine, and the audio analysis module judges whether the recording and playback equipment of the mobile phone board to be tested is normal by analyzing and comparing the recorded sound; Described recording, playback equipment comprise earphone socket, microphone (MIC), earpiece and loudspeaker; It also includes a first soundproof box, the microphone of the mobile phone board to be tested and the speaker of the auxiliary mobile phone board are placed in the first soundproof box for recording and playback; It also includes a second soundproof box, and the earpiece of the mobile phone board to be tested and the microphone of the auxiliary mobile phone board are placed in the second soundproof box for recording and playback; The loudspeaker of the mobile phone board to be tested and the auxiliary mobile phone board microphone are placed in the second soundproof box for recording and playback; The earphone socket includes an earphone microphone and an earphone receiver, and the earphone jack of the mobile phone board to be tested is connected to the auxiliary mobile phone board, and the PC controls the earphone microphone and the earphone receiver of the mobile phone board to be tested and the auxiliary mobile phone board to record each other. ,play music; The frequency of the sound played by the PC to control the mobile phone board to be tested and the auxiliary mobile phone board is 600-1000 Hz; The format of the sound recorded by the PC to control the mobile phone board to be tested and the auxiliary mobile phone board is ACC; The audio analysis module in the PC analyzes and compares after transcoding the ACC format audio into the WAV format; The PC is respectively connected to the mobile phone board to be tested and the auxiliary mobile phone board through a USB cable; Among them, the tests of microphone MIC, receiver and speaker include: 1. MIC test Send the playback command from the PC to the auxiliary mobile phone board through the USB cable to activate the pre-installed sound playback program on the auxiliary mobile phone board, so that the external speaker on the auxiliary mobile phone board through the speaker contact probe can be used in the first soundproof box. Play the sound, the sound played is a pre-recorded Hz fixed frequency sound wave; At the same time, the PC terminal sends a recording command to the mobile phone board to be tested through the USB cable, activates the recording program pre-installed on the mobile phone board to be tested, and makes the external MIC drawn out by the MIC contact probe on the mobile phone board to be tested in the first Recording in a soundproof box; After the machine under test records a sound, save the sound file in ACC format, and then copy the sound file to the PC on the PC; first transcode the sound file, and convert the ACC format sound file into a WAV format file; then apply the algorithm Analyze and calculate the frequency and amplitude of the sound, compare the calculated value with the normal sound value, and then judge whether the MIC of the mobile phone board under test is functioning normally; 2. Speaker test Send the playback command from the PC to the mobile phone board to be tested through the USB cable, activate the pre-installed sound playback program on the mobile phone board to be tested, and make the external speaker on the mobile phone board to be tested through the speaker contact probe in the second The sound is played in the soundproof box, and the sound played is a pre-recorded Hz fixed frequency sound wave; At the same time, the PC terminal sends a recording command to the auxiliary mobile phone board through the USB cable, activates the recording program pre-installed on the auxiliary mobile phone board, and makes the external MIC drawn out by the MIC contact probe on the auxiliary mobile phone board be recorded in the second soundproof box. recording; When the auxiliary test mobile phone board records a sound, save the sound file in ACC format, and then copy the sound file to the PC on the PC side; first transcode the sound file, convert the ACC format sound file into a WAV format file; then apply the algorithm Analyze and calculate the frequency and amplitude of the sound, compare the calculated value with the normal sound value, and then judge whether the speaker of the mobile phone board under test is functioning normally; 3. Handset test Send the playback command from the PC to the mobile phone board to be tested through the USB cable to activate the pre-installed sound playback program on the mobile phone board to be tested; make the external speaker on the mobile phone board to be tested through the earpiece contact probe in the second sound insulation Play the sound in the box, the sound played is a pre-recorded 800Hz fixed frequency sound wave; At the same time, the PC terminal sends a recording command to the auxiliary mobile phone board through the USB cable, activates the recording program pre-installed on the auxiliary mobile phone board, and makes the external MIC drawn out by the MIC contact probe on the auxiliary mobile phone board be recorded in the second soundproof box. recording; After the auxiliary test mobile phone board records a sound, save the sound file in ACC format, and then copy the sound file to the PC on the PC side; first perform the transcoding of the sound file, and convert the ACC format sound file into a WAV format file; Then apply the algorithm to analyze and calculate the frequency and amplitude of the sound, compare the calculated value with the normal sound value, and then judge whether the main earpiece of the board under test is functioning normally; The headphone jack includes a headphone microphone and a headphone receiver; the test is directly connected to the mobile phone board under test and the auxiliary phone board through a special headphone cable; there is no conversion of electrical signals and acoustic signals during the entire test process, and it is completely passed through the main board of the mobile phone to be tested and the auxiliary phone board. Test the electrical signal of the main board of the mobile phone for testing; specifically include: 1. Headphone MIC test Send the earphone playback command from the PC to the auxiliary mobile phone board through the USB cable, activate the earphone playback program pre-installed on the auxiliary mobile phone board, and make the earphone receiver on the auxiliary mobile phone board output electrical signals for playback. The sound is a pre-recorded Hz fixed frequency sound wave; At the same time, the PC terminal sends the earphone recording command to the mobile phone board to be tested through the USB cable, activates the earphone MIC recording program pre-installed on the mobile phone board to be tested, and makes the earphone of the mobile phone board to be tested record, that is, receive electrical signal recording; When the mobile phone under test records a sound, save the sound file in ACC format, and then copy the sound file to the PC on the PC side; first transcode the sound file, convert the ACC format sound file into a WAV format file; then apply the algorithm to Analyze and calculate the frequency and amplitude of the sound, compare the calculated value with the normal sound value, and then judge whether the headphone MIC of the main board of the mobile phone under test is functioning normally; 2. Headphone receiver test Send the playback command from the PC to the mobile phone board to be tested through the USB cable, activate the earphone receiver playback program pre-installed on the mobile phone board to be tested, and make the earphone receiver of the mobile phone board to be tested play the sound, and the sound played is pre-recorded Good Hz fixed frequency sound waves; At the same time, the PC sends a recording command to the auxiliary mobile phone board through the USB cable, activates the pre-installed earphone MIC recording program on the auxiliary mobile phone board, and makes the earphone MIC of the auxiliary mobile phone board record; When the auxiliary test mobile phone board records a sound, save the sound file in ACC format, and then copy the sound file to the PC on the PC side; first transcode the sound file, convert the ACC format sound file into a WAV format file; then apply the algorithm Analyze and calculate the frequency and amplitude of the sound, compare the calculated value with the normal sound value, and then judge whether the earpiece is functioning normally.