CN106840377B - Method and system for detecting horn foam mounting qualification - Google Patents
Method and system for detecting horn foam mounting qualification Download PDFInfo
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- CN106840377B CN106840377B CN201710076284.6A CN201710076284A CN106840377B CN 106840377 B CN106840377 B CN 106840377B CN 201710076284 A CN201710076284 A CN 201710076284A CN 106840377 B CN106840377 B CN 106840377B
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Abstract
The invention discloses a method and a system for detecting horn foam mounting qualification based on a mobile terminal. Firstly, presetting a range value of a low-frequency resonance point of the mobile terminal for judging whether the horn foam mounting is qualified; then, extracting a frequency value corresponding to a first peak in a recording file through recording to obtain a low-frequency resonance point of the mobile terminal; and finally, judging whether the low-frequency resonance point is between the maximum value and the minimum value, if so, judging that the low-frequency resonance point is qualified, and if not, judging that the low-frequency resonance point is unqualified. On one hand, the invention can screen out the products with unqualified surface mount in time, avoid the unqualified products from leaving the factory, is beneficial to improving the product percent of pass, ensures the tone quality of the mobile phone, and improves the overall quality of the products, and on the other hand, the invention has relatively less detection cost, easier operation, relatively shorter detection time and relatively lower professional knowledge for operators.
Description
Technical Field
The invention relates to the technical field of mobile terminals, in particular to a method and a system for detecting whether loudspeaker foam is qualified in surface mounting.
Background
According to acoustic knowledge, a horn usually placed in a certain closed cavity can exert better performance and can have longer service life. However, on the current mobile phone production line, the foam mounting of the loudspeaker still depends on manual operation, the operation level of an operator and the difference of manual operation, so that the foam mounting is not unified and standardized, the conditions of deviation in mounting, skewness in mounting, damage to foam and even leakage in mounting exist, the loudspeaker external performance is poor, and the service life is shortened. Moreover, most manufacturers usually only detect the functions of the horn raw materials and the complete machine and lack the independent detection of the performance of the horn, so that the problems can not be found in time, unqualified products are caused to leave the factory, the integral quality of the products is influenced, and even the image of enterprises is influenced.
The low-frequency resonance point is an important parameter for measuring the performance of the loudspeaker, the frequency corresponding to the first peak in the frequency domain is referred to as the low-frequency resonance point, and the lower the low-frequency resonance point is, the better the low-frequency effect of the loudspeaker is. The low frequency resonance point of loudspeaker usually has a tolerance range, according to acoustics knowledge, the cotton dress of bubble that is used for airtight cavity is not normal can lead to loudspeaker sound to reveal, and its low frequency resonance point can be corresponding to move backward, and the grow promptly, the frequency band narrows down, reveals more seriously, and the low frequency resonance point is big more, and the frequency band is narrow more, leaks when the cotton hourglass of bubble pastes, and it is the biggest to reveal the volume, and tone quality becomes very poor, and the low frequency resonance point is the biggest, and the frequency band is narrowest, and wherein loudspeaker life-span also can reduce thereupon.
Thus, the prior art has yet to be improved and enhanced.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a method and a system for detecting whether the horn foam is qualified for mounting. Whether can be in the middle of maximum value and minimum according to detecting the low frequency resonance point, whether the cotton dress of detecting loudspeaker bubble is qualified, realize detecting the cotton dress of loudspeaker bubble, avoid unqualified product to dispatch from the factory.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for detecting that a horn foam is qualified in mounting based on a mobile terminal comprises the following steps:
step A: presetting a range value of a low-frequency resonance point of the mobile terminal for judging whether the horn foam mounting is qualified or not;
and B: acquiring a low-frequency resonance point of the mobile terminal by recording and extracting a frequency value corresponding to a first peak in a recording file;
and C: and judging whether the low-frequency resonance point is between the range values, if so, judging that the low-frequency resonance point is qualified, and otherwise, judging that the low-frequency resonance point is unqualified.
The method for detecting the qualified mounting of the horn foam based on the mobile terminal comprises the following steps:
b1: playing a test sound source through the mobile terminal, starting a recording function of the mobile terminal after a preset interval time, and storing a recording material;
b2: and extracting a frequency value corresponding to the first peak in the sound recording file of the mobile terminal as a low-frequency resonance point.
The method for detecting the qualified mounting of the horn foam based on the mobile terminal comprises a step S before the step A, wherein the step S specifically comprises the following steps:
s1: selecting a first reference machine with a maximum low-frequency resonance point and a second reference machine with a minimum low-frequency resonance point value;
s2: respectively playing a test sound source by using the first reference machine and the second reference machine, synchronously starting the recording functions of the first reference machine and the second reference machine, and respectively storing the first reference machine and the second reference machine as a first recording file and a second recording file;
and S3, extracting a frequency value corresponding to the first peak in the first sound recording file as a first low-frequency resonance point, and extracting a frequency value corresponding to the first peak in the second sound recording file as a second low-frequency resonance point.
The method for detecting whether the horn foam is qualified in mounting is described, wherein the step A specifically comprises the following steps:
and respectively setting a first low-frequency resonance point and the second low-frequency resonance point as the maximum value and the minimum value of the range value.
The method for detecting the qualified horn foam mounting based on the mobile terminal comprises the following steps: presetting an interval time for starting the recording function of the mobile terminal.
The utility model provides a cotton system that pastes dress of loudspeaker bubble is qualified based on mobile terminal detects, wherein, includes:
presetting a module: the method comprises the steps of presetting a range value of a low-frequency resonance point of the mobile terminal for judging whether horn foam mounting is qualified or not;
an acquisition module: the mobile terminal is used for obtaining a low-frequency resonance point of the mobile terminal through recording and extracting a frequency value corresponding to a first peak in a recording file;
a judging module: and the device is used for judging whether the low-frequency resonance point is between the range values, if so, judging that the low-frequency resonance point is qualified, and if not, judging that the low-frequency resonance point is unqualified.
The system for detecting the qualified mounting of the horn bubble cotton based on the mobile terminal is characterized in that the acquisition module specifically comprises:
a recording unit: the mobile terminal is used for playing the test sound source through the mobile terminal, starting a recording function of the mobile terminal after a preset interval time, and storing recording materials;
an extraction unit: and the frequency value corresponding to the first peak in the sound recording file of the mobile terminal is extracted as a low-frequency resonance point.
Detect the cotton qualified system of subsides dress of loudspeaker bubble, wherein, still include reference quick-witted module before the default module is concrete, refer to quick-witted module and specifically include:
a reference machine selection unit: the first reference machine is used for selecting a first reference machine with a maximum low-frequency resonance point and a second reference machine with a minimum low-frequency resonance point value;
the reference machine recording unit: the first reference machine and the second reference machine are used for respectively playing a test sound source, synchronously starting the recording functions of the first reference machine and the second reference machine and respectively storing the first reference machine and the second reference machine as a first recording file and a second recording file;
and the reference machine low-frequency resonance point acquisition unit is used for extracting a frequency value corresponding to the first peak in the first sound recording file as a first low-frequency resonance point and extracting a frequency value corresponding to the first peak in the second sound recording file as a second low-frequency resonance point.
The system for detecting the qualified mounting of the horn bubble based on the mobile terminal is characterized in that the preset module specifically comprises:
and respectively setting the first low-frequency resonance point and the second low-frequency resonance point as the maximum value and the minimum value of the range value.
It pastes qualified system to paste dress to detect loudspeaker bubble based on mobile terminal, wherein, the recording unit still includes: presetting an interval time for starting the recording function of the mobile terminal.
Compared with the prior art, the invention provides a method and a system for detecting whether loudspeaker foam is qualified in mounting, wherein the maximum value and the minimum value of the low-frequency resonance point of the mobile terminal for judging whether loudspeaker foam is qualified in mounting are preset; then acquiring a low-frequency resonance point of the mobile terminal; and finally, judging whether the low-frequency resonance point is between the maximum value and the minimum value, if so, judging that the low-frequency resonance point is qualified, and if not, judging that the low-frequency resonance point is unqualified. On one hand, the invention can screen out the products with unqualified surface mount in time, avoid the unqualified products from flowing out, improve the overall quality of the products, ensure the tone quality of the mobile phone and be beneficial to improving the qualified rate of the products, and on the other hand, the invention has relatively less detection cost, easier operation, relatively shorter detection time and relatively lower professional knowledge for operators.
Drawings
FIG. 1 is a flow chart of a method for detecting that a blister is qualified for mounting based on a mobile terminal;
fig. 2 is a block diagram of a system for detecting that the horn-shaped foam is qualified in mounting based on a mobile terminal.
Detailed Description
The invention provides a method and a system for detecting horn foam mounting qualification. In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a flowchart of a method for detecting that a blister is qualified for mounting based on a mobile terminal, and as shown in fig. 1, the method for detecting that a blister is qualified for mounting based on a mobile terminal includes:
s100: presetting a range value of a low-frequency resonance point of the mobile terminal for judging whether the horn foam mounting is qualified or not;
the low frequency resonance point of the speaker usually has a standard tolerance range, and the maximum value and the minimum value of the low frequency resonance point of the mobile terminal can be preset by clicking a specific menu on a screen, or inputting a letter/character/number combination, and the method for presetting the maximum value and the minimum value is not limited thereto.
The method for detecting whether the horn foam is qualified in mounting based on the mobile terminal is described, wherein the step S100 specifically comprises the following steps:
and respectively setting a first low-frequency resonance point and the second low-frequency resonance point as the maximum value and the minimum value of the range value.
The method for detecting that the horn foam is qualified in mounting based on the mobile terminal is described, wherein the step S100 further comprises the following steps: presetting an interval time for starting the recording function of the mobile terminal.
The interval time for starting the recording function of the mobile terminal is set because the detection accuracy and accuracy are improved by delaying for a period of time. For example, when detecting a mobile phone, the test result may be indirectly influenced by the shaking of the hand and the influence of the fingers on the sound field of the speaker, so that it is necessary to ensure that the mobile phone is detected under a relatively static condition, such as being placed on a desktop or in a box. And a certain time is needed for placing the test sound source in a static state, so that the sound is recorded after a period of time delay, and meanwhile, the sound of the test sound source played in the interval time is subjected to mute processing, so that the loss of useful information of the sound source caused by non-recording is avoided. The interval time can be set according to the operation habit of the operator, such as 5 seconds.
S200: acquiring a low-frequency resonance point of the mobile terminal by recording and extracting a frequency value corresponding to a first peak in a recording file;
the S200 specifically includes:
s201: playing a test sound source through the mobile terminal, starting a recording function of the mobile terminal after a preset interval time, and storing a recording material;
the test sound source can be written into each mobile phone to be tested through a software program, the test sound source is played after the foam is attached, and the test sound source can be set to automatically stop playing or circularly play after the test sound source is played. And starting the recording function after the test sound source is played for a period of time, stopping recording when the mobile terminal recording function cannot identify surrounding sound, and acquiring a recording file by the system for storage and further analyzing. Preferably, the mobile phone can be placed in a closed box for recording, the closed box is made of transparent materials and has a good sound insulation effect, or is provided with a monitoring window made of transparent materials, or is a closed box with a sound insulation effect and is convenient for an operator to operate. The monitoring window and the transparent material are convenient for operators to observe the operation process and results, and the working efficiency is improved.
S202: and extracting a frequency value corresponding to the first peak in the sound recording file of the mobile terminal as a low-frequency resonance point.
S300: and judging whether the low-frequency resonance point is between the range values, if so, judging that the low-frequency resonance point is qualified, and otherwise, judging that the low-frequency resonance point is unqualified.
And extracting a frequency value corresponding to a first peak in the sound recording file to be used as a low-frequency resonance point, comparing the low-frequency resonance point with a preset maximum value and a preset minimum value, judging the sound recording file to be a qualified product if the low-frequency resonance point is between the maximum value and the minimum value, and otherwise, judging the sound recording file to be an unqualified product, thereby avoiding the unqualified product from leaving the factory.
Further, the judgment result may be displayed on the screen of the mobile terminal, and the display may be any symbol, letter, and the like, and the display form is not limited thereto.
The method for detecting the qualified mounting of the horn foam based on the mobile terminal comprises the following steps before S100, wherein the step S specifically comprises the following steps:
s1: selecting a first reference machine with a maximum low-frequency resonance point and a second reference machine with a minimum low-frequency resonance point value;
selecting two batches of mobile phones, wherein low-frequency resonance points of loudspeakers of the two batches of mobile phones are respectively the maximum value and the minimum value within a tolerance range, manually attaching foam to the two batches of mobile phones by structural experts, testing the performances of the loudspeakers of the two batches of mobile phones through professional audio equipment, and respectively selecting one mobile phone with the maximum value and the minimum value of the low-frequency resonance points, which have the performances most meeting the specification, from each batch of mobile phones, wherein the two mobile phones are respectively a first reference machine and a second reference machine.
S2: respectively playing a test sound source by using the first reference machine and the second reference machine, synchronously starting the recording functions of the first reference machine and the second reference machine, and respectively storing the first reference machine and the second reference machine as a first recording file and a second recording file;
and placing test sound sources in the two reference machines, respectively placing the reference machines in a quiet environment for playing, synchronously starting the recording function of the reference machines, and recording the sound. And then respectively storing the sound files as a first sound recording file and a second sound recording file.
And S3, extracting a frequency value corresponding to the first peak in the first sound recording file as a first low-frequency resonance point, and extracting a frequency value corresponding to the first peak in the second sound recording file as a second low-frequency resonance point.
And extracting a frequency value corresponding to a first wave peak in the two sound recording files, namely a low-frequency resonance point, as a reference value for subsequently detecting whether the loudspeaker foam is qualified in mounting, wherein the first low-frequency resonance point corresponding to a first sound recording file of a first reference machine and the second low-frequency resonance point corresponding to a second sound recording file of a second reference machine are used.
In summary, the method and the system for detecting whether the horn-shaped foam is qualified in mounting provided by the invention are characterized in that the maximum value and the minimum value of the low-frequency resonance point of the mobile terminal for judging whether the horn-shaped foam is qualified in mounting are preset; then, extracting a frequency value corresponding to a first peak in a recording file through recording to obtain a low-frequency resonance point of the mobile terminal; and finally, judging whether the low-frequency resonance point is between the maximum value and the minimum value, if so, judging that the low-frequency resonance point is qualified, and if not, judging that the low-frequency resonance point is unqualified. Therefore, on one hand, the invention can quickly and efficiently screen out the unqualified products for mounting, avoid the unqualified products from leaving the factory, improve the overall quality of the products, ensure the tone quality of the mobile phone, be beneficial to improving the qualification rate of the products and ensuring the quality of the products, on the other hand, the invention has relatively less detection cost, easier operation, relatively shorter detection time and relatively lower professional knowledge of operators, thereby being capable of investing less asset cost and time cost.
Based on the above method embodiment, the present invention further provides a system for detecting that a horn-shaped foam is qualified for mounting, please refer to fig. 2, fig. 2 is a block diagram of a system for detecting that a horn-shaped foam is qualified for mounting based on a mobile terminal, and as shown in fig. 2, the system for detecting that a horn-shaped foam is qualified for mounting based on a mobile terminal includes:
the presetting module 100: the method comprises the steps of presetting a range value of a low-frequency resonance point of the mobile terminal for judging whether horn foam mounting is qualified or not; as described above.
The system for detecting the qualified mounting of the horn bubble based on the mobile terminal is characterized in that the preset module specifically comprises:
and respectively setting the first low-frequency resonance point and the second low-frequency resonance point as the maximum value and the minimum value of the range value.
It pastes qualified system to paste dress to detect loudspeaker bubble based on mobile terminal, wherein, the recording unit still includes: an interval time for starting the recording function of the mobile terminal is preset, and is specifically as described above.
The acquisition module 200: the low-frequency resonance point acquisition module is used for acquiring a low-frequency resonance point of the mobile terminal;
detect the cotton qualified system of subsides of loudspeaker bubble, wherein, the acquisition module specifically includes:
the recording unit 201: the mobile terminal is used for playing the test sound source through the mobile terminal, starting the recording function of the mobile terminal after a preset interval time, and storing the recording material, and is specifically described above.
The extraction unit 202: and the frequency value corresponding to the first peak in the sound recording file of the mobile terminal is extracted as a low-frequency resonance point.
The judging module 300: and the method is used for judging whether the low-frequency resonance point is between the range values, if so, judging that the low-frequency resonance point is qualified, and if not, judging that the low-frequency resonance point is unqualified, specifically, the method is as described above.
It pastes qualified system to paste dress to detect loudspeaker bubble based on mobile terminal, wherein, still include reference quick-witted module 90 before the module is specific to predetermine, refer to quick-witted module and specifically include:
the reference machine selecting unit 91: the first reference machine is used for selecting a first reference machine with a maximum low-frequency resonance point and a second reference machine with a minimum low-frequency resonance point value; as described above.
The reference recorder recording unit 92: the first reference machine and the second reference machine are used for respectively playing a test sound source, synchronously starting the recording functions of the first reference machine and the second reference machine and respectively storing the first reference machine and the second reference machine as a first recording file and a second recording file; as described above.
And the reference machine low-frequency resonance point obtaining unit 93 is configured to extract a frequency value corresponding to the first peak in the first sound recording file as a first low-frequency resonance point, and extract a frequency value corresponding to the first peak in the second sound recording file as a second low-frequency resonance point.
In summary, the system presets a range value for judging a low-frequency resonance point of the mobile terminal when the horn-bubble cotton mounting is qualified through a presetting module, acquires the low-frequency resonance point of the mobile terminal through an acquiring module, and finally judges whether the low-frequency resonance point is between the range values through a judging module, if so, the low-frequency resonance point is qualified, and otherwise, the low-frequency resonance point is unqualified. Therefore, on one hand, the invention can quickly and efficiently screen out the unqualified products for mounting, avoid the unqualified products from leaving the factory, improve the overall quality of the products, ensure the tone quality of the mobile phone, be beneficial to improving the qualification rate of the products and ensuring the quality of the products, on the other hand, the invention has relatively less detection cost, easier operation, relatively shorter detection time and relatively lower professional knowledge of operators, thereby being capable of investing less asset cost and time cost.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (6)
1. A method for detecting that loudspeaker foam is qualified in mounting based on a mobile terminal is characterized by comprising the following steps:
step A: presetting a range value of a low-frequency resonance point of the mobile terminal for judging whether the horn foam mounting is qualified or not;
and B: acquiring a low-frequency resonance point of the mobile terminal by recording and extracting a frequency value corresponding to a first peak in a recording file;
and C: judging whether the low-frequency resonance point is between the range values, if so, judging that the low-frequency resonance point is qualified, and otherwise, judging that the low-frequency resonance point is unqualified;
the step A also comprises the following steps: presetting an interval time for starting a recording function of the mobile terminal;
step S is further included before step a, and step S specifically includes:
s1: selecting a first reference machine with a maximum low-frequency resonance point and a second reference machine with a minimum low-frequency resonance point value;
selecting two batches of mobile phones, wherein low-frequency resonance points of loudspeakers of the two batches of mobile phones are respectively the maximum value and the minimum value within a tolerance range, mounting foam on the two batches of mobile phones manually by structural experts, testing the loudspeaker performance of the two batches of mobile phones through professional audio equipment, selecting one mobile phone with the maximum value of the low-frequency resonance point and the performance most meeting the specification from the batch of mobile phones with the maximum value of the low-frequency resonance point within the tolerance range, and selecting one mobile phone with the minimum value of the low-frequency resonance point and the performance most meeting the specification from the batch of mobile phones with the minimum value of the low-frequency resonance point within the tolerance range, wherein the two mobile phones are respectively a first reference machine and a second reference machine;
s2: respectively playing a test sound source by using the first reference machine and the second reference machine, synchronously starting the recording functions of the first reference machine and the second reference machine, and respectively storing the first reference machine and the second reference machine as a first recording file and a second recording file;
and S3, extracting a frequency value corresponding to the first peak in the first sound recording file as a first low-frequency resonance point, and extracting a frequency value corresponding to the first peak in the second sound recording file as a second low-frequency resonance point.
2. The method for detecting whether the blister is qualified for mounting according to claim 1, wherein the step B specifically includes:
b1: playing a test sound source through the mobile terminal, starting a recording function of the mobile terminal after a preset interval time, and storing a recording material;
b2: and extracting a frequency value corresponding to the first peak in the sound recording file of the mobile terminal as a low-frequency resonance point.
3. The method for detecting whether the blister is qualified for mounting based on the mobile terminal according to claim 1, wherein the step a specifically comprises:
and respectively setting a first low-frequency resonance point and the second low-frequency resonance point as the maximum value and the minimum value of the range value.
4. The utility model provides a cotton system of pasting dress qualifiedly of loudspeaker bubble based on mobile terminal detects, its characterized in that includes:
presetting a module: the method comprises the steps of presetting a range value of a low-frequency resonance point of the mobile terminal for judging whether horn foam mounting is qualified or not;
an acquisition module: the mobile terminal is used for obtaining a low-frequency resonance point of the mobile terminal through recording and extracting a frequency value corresponding to a first peak in a recording file;
a judging module: the device is used for judging whether the low-frequency resonance point is between range values, if so, judging that the low-frequency resonance point is qualified, and if not, judging that the low-frequency resonance point is unqualified;
the acquisition module further comprises: presetting an interval time for starting a recording function of the mobile terminal;
the preset module further comprises a reference machine module, and the reference machine module specifically comprises:
a reference machine selection unit: the first reference machine is used for selecting a first reference machine with a maximum low-frequency resonance point and a second reference machine with a minimum low-frequency resonance point value;
selecting two batches of mobile phones, wherein low-frequency resonance points of loudspeakers of the two batches of mobile phones are respectively the maximum value and the minimum value within a tolerance range, mounting foam on the two batches of mobile phones manually by structural experts, testing the loudspeaker performance of the two batches of mobile phones through professional audio equipment, selecting one mobile phone with the maximum value of the low-frequency resonance point and the performance most meeting the specification from the batch of mobile phones with the maximum value of the low-frequency resonance point within the tolerance range, and selecting one mobile phone with the minimum value of the low-frequency resonance point and the performance most meeting the specification from the batch of mobile phones with the minimum value of the low-frequency resonance point within the tolerance range, wherein the two mobile phones are respectively a first reference machine and a second reference machine;
the reference machine recording unit: the first reference machine and the second reference machine are used for respectively playing a test sound source, synchronously starting the recording functions of the first reference machine and the second reference machine and respectively storing the first reference machine and the second reference machine as a first recording file and a second recording file;
and the reference machine low-frequency resonance point acquisition unit is used for extracting a frequency value corresponding to the first peak in the first sound recording file as a first low-frequency resonance point and extracting a frequency value corresponding to the first peak in the second sound recording file as a second low-frequency resonance point.
5. The system for detecting whether the blister is qualified for mounting according to claim 4, wherein the obtaining module specifically includes:
a recording unit: the mobile terminal is used for playing the test sound source through the mobile terminal, starting a recording function of the mobile terminal after a preset interval time, and storing recording materials;
an extraction unit: and the frequency value corresponding to the first peak in the sound recording file of the mobile terminal is extracted as a low-frequency resonance point.
6. The system for detecting whether the horn foam is qualified for mounting according to claim 4, wherein the preset module specifically comprises:
and respectively setting the first low-frequency resonance point and the second low-frequency resonance point as the maximum value and the minimum value of the range value.
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| CN106303875A (en) * | 2015-05-15 | 2017-01-04 | 比亚迪股份有限公司 | Loudspeaker screening technique and device |
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