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Method for removing foreign matters in loudspeaker and mobile terminal

A mobile terminal and loudspeaker technology, applied in the field of mobile communications, can solve the problems of water and dust entering the speaker unit, which cannot be cleaned, and achieve the effects of ensuring performance, improving reliability and service life, and reducing production costs

Active Publication Date: 2017-05-31
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The embodiment of the present invention provides a method and a mobile terminal for removing foreign matter in the speaker, which can overcome the problem that the speaker unit in the prior art is prone to water and dust but cannot be removed

Method used

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  • Method for removing foreign matters in loudspeaker and mobile terminal
  • Method for removing foreign matters in loudspeaker and mobile terminal
  • Method for removing foreign matters in loudspeaker and mobile terminal

Examples

Experimental program
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Effect test

Embodiment 1

[0025] refer to Figure 1 to Figure 5 , the present invention provides a method for removing foreign matter in a speaker, which is applied to a mobile terminal, and is mainly aimed at the situation where a sound hole of a speaker is blocked by a foreign matter, and is characterized in that it includes:

[0026] Step S11 detects the quality factor value of the speaker, and judges whether there is a foreign object in the speaker according to the quality factor value;

[0027] When dust and water enter the speaker cavity or block the dust filter of the speaker, the sound output area of ​​the speaker will be reduced, and the state of the entire speaker system will change greatly compared with the normal state. The TS parameters are measured, and the quality factor value of the loudspeaker is the key parameter in the TS parameters. Therefore, by detecting the quality factor value of the speaker, it can be accurately determined whether there is a foreign object in the speaker.

[...

Embodiment 2

[0045] refer to Figure 4 to Figure 6 , this embodiment provides a method for removing foreign matter from a speaker, which is applied to a mobile terminal, mainly for the case where foreign matter (such as water, dust) enters the cavity of the speaker, and is characterized in that it includes:

[0046] Step S41 detects the quality factor value of the speaker, and judges whether there is a foreign object in the speaker according to the quality factor value;

[0047] Step S42: When there is a foreign object in the speaker, generate an ultrasonic driving signal, drive the speaker through the ultrasonic driving signal, and atomize the water entering the speaker cavity into water vapor;

[0048] Wherein, the frequency of the ultrasonic driving signal is 42K±100Hz.

[0049]Step S43 generating a drive signal at a preset frequency, the difference between the preset frequency and the system resonance frequency being less than a preset value;

[0050] Wherein, the preset frequency is...

Embodiment 3

[0064] refer to Figure 7 , this embodiment provides a mobile terminal 700, including a speaker 701, characterized in that it also includes:

[0065] A detection module 702, configured to detect the quality factor value of the speaker 701;

[0066] A judging module 703, configured to judge whether there is a foreign object in the speaker 701;

[0067] The driving module 704 is configured to generate a driving signal with a preset frequency to drive the speaker 201 to vibrate, so as to remove foreign objects in the speaker 701 .

[0068] The detection simulation 702 described above includes:

[0069] A collection module 7021, configured to collect the DC resistance of the speaker 701, and collect the amplitude and current value of the driving signal;

[0070] The computing module 7022 is configured to obtain the quality factor value of the loudspeaker 701 through computing.

[0071] The aforementioned calculation module 7022 is also used for calculation to obtain the cavity...

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Abstract

The invention relates to the field of mobile communication and provides a method for removing foreign matters in a loudspeaker and a mobile terminal. The method for removing the foreign matters in the loudspeaker is applied to the mobile terminal and comprises the steps as follows: a quality factor value of the loudspeaker is detected, and whether the foreign matters exist in the loudspeaker is judged according to the quality factor value; when the foreign matters exist in the loudspeaker, a drive signal at preset frequency is generated, and the difference between the preset frequency and system resonance frequency is smaller than a preset value; the drive signal drives the loudspeaker, the loudspeaker is controlled to produce jet streams, and the foreign matters are removed by the jet streams. According to the method for removing the foreign matters in the loudspeaker, whether the foreign matters exist in the loudspeaker is judged accurately according to the quality factor value; the jet streams produced by the loudspeaker remove the foreign matters quickly and effectively, the reliability of the loudspeaker is improved, and the service life of the loudspeaker is prolonged.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for removing foreign objects in a loudspeaker and a mobile terminal. Background technique [0002] The loudspeaker is an important part of the mobile terminal. With the increasing use of audio and video playback functions in the mobile terminal, users have higher and higher requirements for the loudspeaker. The speaker opening will cause water or dust to enter the speaker unit. The dust will block the sound outlet of the speaker unit, and the water vapor will turn into water and accumulate in the cavity of the speaker. These dust and water vapor will not only affect the sound of the speaker unit. Performance will shorten the service life of the speaker unit, and it is very difficult to remove the dust and water vapor on the speaker unit. Therefore, the current mobile terminal only "prevents" the water vapor and dust entering the speaker opening, but does not "drain". ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R31/00
CPCH04R31/00
Inventor 蒋志成
Owner VIVO MOBILE COMM CO LTD
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