CN110225434B - Over-temperature protection method and device, computer storage medium and electronic equipment - Google Patents
Over-temperature protection method and device, computer storage medium and electronic equipment Download PDFInfo
- Publication number
- CN110225434B CN110225434B CN201910472192.9A CN201910472192A CN110225434B CN 110225434 B CN110225434 B CN 110225434B CN 201910472192 A CN201910472192 A CN 201910472192A CN 110225434 B CN110225434 B CN 110225434B
- Authority
- CN
- China
- Prior art keywords
- impedance
- loudspeaker
- value
- temperature
- change rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/05—Detection of connection of loudspeakers or headphones to amplifiers
Abstract
The embodiment of the application discloses an over-temperature protection method, an over-temperature protection device, a computer storage medium and electronic equipment, wherein the method comprises the following steps: acquiring a first impedance value of a loudspeaker by acquiring the impedance of the loudspeaker in the process of playing music by the loudspeaker; determining an impedance change rate corresponding to the loudspeaker according to the reference impedance value of the loudspeaker and the first impedance value; the reference impedance value is obtained by collecting the impedance of the loudspeaker before music is played; and controlling an intelligent power amplifier to perform over-temperature protection processing on the loudspeaker based on the determined impedance change rate.
Description
Technical Field
The present disclosure relates to the field of power electronics technologies, and in particular, to an over-temperature protection method and apparatus, a computer storage medium, and an electronic device.
Background
With the progress and development of technology, the development of Smart Power Amplifiers (SPAs) is more and more mature, and the Smart Power amplifiers are widely used in electronic devices such as Smart phones, for example, for driving speakers. Because the loudspeaker usually needs heavy current drive, and is easy to generate heat when working, in order to prevent the loudspeaker from generating heat seriously and causing the phenomenon of burning out, can utilize intelligent power amplifier to carry out overtemperature protection at present.
In the conventional solutions of the present time, there is a contact connection between the loudspeaker sound chamber and the circuit board, and grease is usually applied at the contacts to prevent oxidation of the contacts. In the music playing process, vibration of a contact point can be brought by vibration of a sound cavity of the loudspeaker, so that grease can be introduced under the contact point, and the impedance of the loudspeaker is increased; at this time, the intelligent power amplifier may misunderstand that the temperature of the speaker is too high, so that the speaker is silent, and thus there is a possibility of error protection.
Disclosure of Invention
The main objective of the present application is to provide an over-temperature protection method and apparatus, a computer storage medium, and an electronic device, which not only implement an over-temperature protection function, but also reduce the probability of error protection.
In order to achieve the purpose, the technical scheme of the application is realized as follows:
in a first aspect, an embodiment of the present application provides an over-temperature protection method, where the method includes:
acquiring a first impedance value of a loudspeaker by acquiring the impedance of the loudspeaker in the process of playing music by the loudspeaker;
determining an impedance change rate corresponding to the loudspeaker according to the reference impedance value of the loudspeaker and the first impedance value; the reference impedance value is obtained by collecting the impedance of the loudspeaker before music is played;
and controlling an intelligent power amplifier to perform over-temperature protection processing on the loudspeaker based on the determined impedance change rate.
In a second aspect, an embodiment of the present application provides an over-temperature protection device, including: the device comprises an acquisition unit, a determination unit and a control unit; wherein the content of the first and second substances,
the acquisition unit is configured to acquire the impedance of the loudspeaker in the process of playing music by the loudspeaker to obtain a first impedance value of the loudspeaker;
the determining unit is configured to determine an impedance change rate corresponding to the loudspeaker according to a reference impedance value of the loudspeaker and the first impedance value; the reference impedance value is obtained by collecting the impedance of the loudspeaker before music is played;
the control unit is configured to control the intelligent power amplifier to perform over-temperature protection processing on the loudspeaker based on the determined impedance change rate.
In a third aspect, an embodiment of the present application provides an over-temperature protection device, where the over-temperature protection device includes: a memory and a processor; wherein the content of the first and second substances,
the memory for storing a computer program operable on the processor;
the processor is adapted to perform the steps of the method according to the first aspect when running the computer program.
In a fourth aspect, embodiments of the present application provide a computer storage medium storing an over-temperature protection program, which when executed by at least one processor implements the steps of the method according to the first aspect.
In a fifth aspect, an embodiment of the present application provides an electronic device, which includes at least a speaker, a smart power amplifier, and the over-temperature protection device according to the second aspect or the third aspect.
The method is applied to the over-temperature protection device, and the over-temperature protection device is located in the electronic equipment. Acquiring a first impedance value of a loudspeaker by acquiring the impedance of the loudspeaker in the process of playing music by the loudspeaker; determining an impedance change rate corresponding to the loudspeaker according to the reference impedance value of the loudspeaker and the first impedance value; the reference impedance value is obtained by collecting the impedance of the loudspeaker before music is played; controlling an intelligent power amplifier to perform over-temperature protection processing on the loudspeaker based on the determined impedance change rate; therefore, the over-temperature protection processing is controlled by introducing the impedance change rate, so that not only is the over-temperature protection function realized, but also the probability of error protection is reduced, and the phenomenon that the loudspeaker is subjected to silent output due to the fact that the loudspeaker is mistakenly overhigh in temperature because of the increase of the contact impedance is effectively avoided.
Drawings
Fig. 1 is a schematic flow chart of an over-temperature protection method according to an embodiment of the present disclosure;
fig. 2 is a schematic circuit diagram of an intelligent power amplifier according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of a contact connection of an electronic device according to an embodiment of the present disclosure;
fig. 4 is a detailed flowchart of a conventional over-temperature protection method according to an embodiment of the present disclosure;
fig. 5 is a schematic detailed flowchart of an over-temperature protection method according to an embodiment of the present disclosure;
FIG. 6 is a schematic flow chart illustrating another over-temperature protection method according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of an over-temperature protection device according to an embodiment of the present disclosure;
fig. 8 is a schematic diagram of a specific hardware structure of an over-temperature protection device according to an embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
A power amplifier, referred to as "power amplifier" for short, is an amplifier that can generate maximum power output to drive a load (e.g., a speaker) under a given distortion rate; compared with the power amplifier, the intelligent power amplifier has the greatest difference that signal feedback is increased. The intelligent power amplifier can specially improve the music output dynamic range of the electronic equipment, dynamically track the state of the loudspeaker, sense the change of the environment where the loudspeaker is located and adaptively adjust the state, and bring higher volume and better tone quality for the music playing of the loudspeaker in the electronic equipment. Currently, smart power amplifiers are widely used in electronic devices such as smart phones, palm computers, Personal Digital Assistants (PDAs), Portable Media Players (PMPs), desktop computers, and the like.
It can be understood that the speaker usually needs a larger current to drive, and the speaker is easy to generate heat when working, and in order to prevent the speaker from generating heat seriously and causing a burnout phenomenon, the intelligent power amplifier can be used for over-temperature protection. The over-temperature protection has the working principle that when the loudspeaker plays music, the loudspeaker can generate heat, so that the temperature of the loudspeaker is increased, and the impedance is increased; in this way, monitoring of the temperature of the loudspeaker can be achieved by monitoring the impedance of the loudspeaker. Many manufacturers mix a sine wave signal in music in the process of playing music by a loudspeaker, and the impedance of the loudspeaker can be monitored by detecting the voltage and the current of the sine wave signal, so that the aim of monitoring the temperature of the loudspeaker is fulfilled.
The embodiment of the application provides an over-temperature protection method, which is applied to an over-temperature protection device, and the over-temperature protection device is located in electronic equipment. Acquiring a first impedance value of a loudspeaker by acquiring the impedance of the loudspeaker in the process of playing music by the loudspeaker; determining an impedance change rate corresponding to the loudspeaker according to the reference impedance value of the loudspeaker and the first impedance value; the reference impedance value is obtained by collecting the impedance of the loudspeaker before music is played; controlling an intelligent power amplifier to perform over-temperature protection processing on the loudspeaker based on the determined impedance change rate; therefore, the over-temperature protection processing is controlled according to the change condition of the impedance, so that not only is the over-temperature protection function realized, but also the probability of error protection is reduced, and the phenomenon that the loudspeaker is subjected to silent output due to the fact that the temperature of the loudspeaker is mistaken to be too high due to the increase of the contact impedance is effectively avoided.
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, a schematic flow chart of an over-temperature protection method provided in an embodiment of the present application is shown. As shown in fig. 1, the method may include:
s101: acquiring a first impedance value of a loudspeaker by acquiring the impedance of the loudspeaker in the process of playing music by the loudspeaker;
it should be noted that, for the electronic device, when the electronic device plays music through the speaker, the impedance of the speaker may be collected at this time to obtain the first impedance value of the speaker. The impedance of the loudspeaker can be acquired in real time, periodically or randomly; in practical applications, the setting is performed according to practical situations, and the embodiments of the present application are not particularly limited.
It should be noted that, for the impedance of the collecting speaker, the impedance may be calculated by collecting a voltage value and a current value corresponding to music played by the speaker. Thus, in some embodiments, for S101, this step may include:
collecting a voltage value and a current value corresponding to the loudspeaker;
and calculating according to the voltage value and the current value to obtain a first impedance value of the loudspeaker.
For most manufacturers, a sine wave signal may be mixed in the music during the music playing process by the loudspeakers. In this way, acquiring the voltage value and the current value corresponding to the loudspeaker may specifically refer to acquiring the voltage value and the current value of the sine wave signal; therefore, according to the collected voltage value and current value, the first impedance value of the loudspeaker can be obtained by combining an empirical formula of impedance calculation.
Referring to fig. 2, a schematic diagram of a circuit structure of a smart power amplifier provided in an embodiment of the present application is shown. As shown in fig. 2, the model of the smart power amplifier is MAX98928WLCSP, and the surrounding circuit structure of the smart power amplifier is shown in fig. 2; wherein, SPK + and SPK-represent output signals of the intelligent power amplifier and are used for controlling the output of the speaker with sound or without sound; SPK _ SENSE _ P, SPK _ SENSE _ N represents a voltage acquisition signal for acquiring an acquired voltage value and a volume corresponding to the voltage value; therefore, the first impedance value of the loudspeaker can be calculated according to the collected voltage value and the current value, so that the temperature rise value of the loudspeaker can be further obtained later, and the output signal of the intelligent power amplifier is controlled to control the loudspeaker to output sound or soundless sound.
S102: determining an impedance change rate corresponding to the loudspeaker according to the reference impedance value of the loudspeaker and the first impedance value; the reference impedance value is obtained by collecting the impedance of the loudspeaker before music is played;
it should be noted that, after the electronic device is turned on and before the speaker plays music, the impedance of the speaker may also be collected at this time to obtain a reference impedance value of the speaker (also referred to as a base impedance value of the speaker). Thus, in some embodiments, prior to S101, the method may further comprise:
before music is played by a loudspeaker, the impedance of the loudspeaker is collected, and a reference impedance value of the loudspeaker is obtained.
That is to say, before music is played by the speaker, the impedance of the speaker may be collected at this time, and the collected impedance value is used as a reference impedance value of the speaker, so as to measure a subsequent impedance change condition (such as an impedance change rate) and a subsequent temperature change condition (such as a temperature rise value).
Therefore, after the reference impedance value of the loudspeaker is obtained, the impedance change condition of the loudspeaker can be measured by using the reference impedance value and the first impedance value collected in real time in the process of playing music; such as whether the impedance change is suddenly increased or slowly increased. That is to say, after the reference impedance value and the first impedance value of the speaker are obtained, the impedance change rate corresponding to the speaker can be determined according to the impedance difference between the reference impedance value and the first impedance value and the acquisition time difference.
Further, after the reference impedance value of the loudspeaker is obtained, the reference impedance value and the first impedance value collected in real time can be used for measuring the temperature change condition of the loudspeaker. For a loudspeaker, the calculation relationship between the corresponding impedance of the loudspeaker and the temperature can be directly obtained, and is related to the characteristics of the loudspeaker; thus, according to the calculated relation between the impedance and the temperature, the temperature change condition of the loudspeaker can be determined. Thus, in some embodiments, the method may further comprise:
calculating the difference value of the reference impedance value of the loudspeaker and the first impedance value to obtain an impedance increasing value;
and determining a temperature increase value corresponding to the impedance increase value based on a calculation relation between the impedance and the temperature acquired in advance.
That is, after the reference impedance value and the first impedance value of the speaker are obtained, the impedance increasing value can be obtained through the difference calculation of the two values; then, according to the calculation relationship between the impedance and the temperature, the temperature increase value corresponding to the impedance increase value can be determined, so as to obtain the temperature change condition of the loudspeaker.
S103: and controlling an intelligent power amplifier to perform over-temperature protection processing on the loudspeaker based on the determined impedance change rate.
Note that the sound output or the silent output of the speaker can be controlled by the output signal (for example, SPK +, SPK-) shown in fig. 2) of the smart power amplifier, so that the over-temperature protection process of the speaker can be realized.
It should be further noted that, the intelligent power amplifier is used to perform over-temperature protection processing on the speaker, and the purpose of monitoring the temperature of the speaker is mainly achieved by collecting the impedance of the speaker. Generally, the impedance value increases, indicating an increase in the temperature of the speaker; and the temperature rise value of the loudspeaker can be calculated according to the calculated relationship between the impedance and the temperature based on the reference impedance value of the loudspeaker. Therefore, on one hand, whether the loudspeaker needs to be subjected to over-temperature protection processing can be judged according to the temperature rise value of the loudspeaker; on the other hand, whether the loudspeaker needs to be subjected to over-temperature protection processing can be further judged according to the impedance change rate. Thus, in some embodiments, for S103, this step may include:
and when the impedance change rate is smaller than a preset change rate threshold value and the temperature rise value exceeds a preset temperature threshold value, carrying out over-temperature protection treatment on the loudspeaker through the intelligent power amplifier.
It should be noted that the preset change rate threshold is a preset change rate determination value for measuring whether the speaker performs the over-temperature protection process, for example, the preset change rate threshold may be 10 Ω/s; the preset temperature threshold is a preset temperature judgment value for judging whether the loudspeaker is subjected to over-temperature protection treatment, for example, the preset temperature threshold may be 40 ℃; in practical applications, the preset change rate threshold and the preset temperature threshold are set according to actual conditions of the speaker, and the embodiment of the present application is not particularly limited.
Taking electronic equipment such as a smart phone as an example, a contact is connected between a speaker sound cavity (BOX) and a Flexible Printed Circuit (FPC) board; fig. 3 is a schematic diagram illustrating a contact connection of an electronic device according to an embodiment of the present disclosure. In order to prevent the contact from being oxidized and corroded, an oxidation preventing material such as grease is generally applied to the contact. Therefore, in the process of playing music by the loudspeaker, the vibration of the sound cavity of the loudspeaker brings vibration of the contact point, so that grease can be introduced under the contact point, and the impedance of the loudspeaker is increased. In the conventional solution at present, as shown in fig. 4, after the temperature increase value of the speaker is calculated according to the increase value of the impedance, the conventional solution only considers the temperature change of the speaker, that is, determines whether the speaker needs to be subjected to the over-temperature protection processing by whether the temperature increase value exceeds the preset temperature threshold; specifically, if the temperature rise value does not exceed the preset temperature threshold value, returning to the previous step, and continuing to perform real-time acquisition on the impedance of the loudspeaker; if the temperature rise value exceeds the preset temperature threshold value, the intelligent power amplifier carries out over-temperature protection processing on the loudspeaker, and the loudspeaker is controlled to pause music playing. Therefore, when impedance is increased too much due to introduction of grease at the contact of the loudspeaker, the temperature increase value obtained at the moment is too large, and the intelligent power amplifier may misunderstand that the temperature of the loudspeaker is too high at the moment, so that over-temperature protection processing is performed on the loudspeaker, the loudspeaker is subjected to silent output, and poor user experience is brought.
According to the embodiment of the application, besides the temperature change of the loudspeaker, the impedance change of the loudspeaker is additionally considered, namely according to the determined impedance change rate, if the impedance change rate is smaller than a preset change rate threshold value, the impedance value is indicated to be slowly increased, the impedance change can be determined to be caused by the heating of the loudspeaker, and at this time, the intelligent power amplifier can be controlled to perform over-temperature protection processing on the loudspeaker; if the impedance change rate is not less than the preset change rate threshold value, which indicates that the impedance value is suddenly increased, the impedance change can be determined to be caused by the increase of the contact impedance at the contact point, and at this time, the intelligent power amplifier can be controlled not to carry out over-temperature protection processing on the loudspeaker, so that the phenomenon of silent output of the loudspeaker under the working condition is avoided, and the problem of error protection in the traditional solution is solved. That is to say, the over-temperature protection method of the embodiment of the present application not only considers the temperature rise value of the speaker, but also considers the impedance change rate of the speaker; therefore, the optimization of the traditional solution is realized, the probability of error protection is reduced, and the phenomenon that the loudspeaker outputs soundless due to the fact that the temperature of the loudspeaker is overhigh due to the fact that the contact impedance at the contact point is increased is effectively avoided.
Since the temperature change of the speaker and the impedance change of the speaker are considered at the same time in the embodiment of the present application, the execution sequence is to execute the judgment of the temperature change first and then execute the judgment of the impedance change, or execute the judgment of the impedance change first and then execute the judgment of the temperature change, and the achieved effects of the two are the same, and the execution sequence is not particularly limited in the embodiment of the present application.
In another embodiment of the present application, it is assumed that the execution order is that the judgment of the impedance change is executed first, and then the judgment of the temperature change is executed. Thus, in some embodiments, for S103, when the impedance change rate is smaller than a preset change rate threshold and the temperature increase value exceeds a preset temperature threshold, performing an over-temperature protection process on the speaker through the smart power amplifier, which may include:
judging whether the impedance change rate is smaller than a preset change rate threshold value or not;
when the impedance change rate is smaller than a preset change rate threshold value, judging whether the temperature rise value exceeds a preset temperature threshold value;
and when the temperature rise value exceeds a preset temperature threshold value, carrying out over-temperature protection treatment on the loudspeaker through the intelligent power amplifier.
Further, in some embodiments, after determining whether the impedance change rate is less than a preset change rate threshold, the method may further include:
and when the impedance change rate is not less than a preset change rate threshold value, taking the first impedance value as a reference impedance value of the loudspeaker, and continuing to perform the step of collecting the impedance of the loudspeaker.
Further, in some embodiments, after determining whether the temperature increase value exceeds a preset temperature threshold, the method may further include:
and when the temperature rise value does not exceed a preset temperature threshold value, continuing to perform the step of acquiring the impedance of the loudspeaker.
In order to reduce the probability of the error protection, the embodiment of the present application not only determines whether the over-temperature protection processing needs to be performed on the speaker according to the impedance change rate, but also further determines whether the over-temperature protection processing needs to be performed on the speaker according to the temperature increase value of the speaker.
Referring to fig. 5, a detailed flow diagram of an over-temperature protection method provided in an embodiment of the present application is shown. As shown in fig. 5, after the electronic device is turned on, the impedance of the speaker may be collected first, and the impedance value is used as a reference impedance value of the speaker; in the process of playing music by the loudspeaker, the impedance of the loudspeaker can be acquired in real time to obtain a first impedance value of the loudspeaker; according to the reference impedance value of the loudspeaker and the first impedance value, the impedance change rate corresponding to the loudspeaker can be determined; thus, firstly, whether the impedance change rate is smaller than a preset change rate threshold value is judged; when the impedance change rate is not less than the preset change rate threshold, it indicates that the impedance value is suddenly increased, and then it can be determined that the change of the impedance is caused by the increase of the contact impedance at the contact point, which does not cause the temperature rise of the speaker or even the over-temperature, at this time, the first impedance value can be used as a new reference impedance value, and then the step of collecting the impedance of the speaker in real time is returned, and the over-temperature protection method of the embodiment of the application is continuously executed; when the impedance change rate is smaller than a preset change rate threshold value, the impedance value is indicated to be slowly increased, so that the impedance change can be determined to be caused by the heating of the loudspeaker, the temperature change can be judged at the moment, and the temperature increase value of the loudspeaker is calculated according to the conversion relation between the impedance and the temperature; judging whether the temperature rise value exceeds a preset temperature threshold value or not; when the temperature rise value does not exceed the preset temperature threshold value, the temperature of the loudspeaker is not over-temperature, the loudspeaker does not need to be subjected to over-temperature protection processing through the intelligent power amplifier, and the step of acquiring the impedance of the loudspeaker in real time can be returned to, so that the over-temperature protection method in the embodiment of the application is continuously executed; when the temperature rise value exceeds a preset temperature threshold value, the temperature of the loudspeaker is over-temperature, the loudspeaker needs to be subjected to over-temperature protection processing through an intelligent power amplifier, so that the loudspeaker stops playing music, and the step of collecting the impedance of the loudspeaker in real time is still returned; therefore, when the second impedance value of the speaker is smaller than the preset impedance threshold value in the process that the speaker stops playing music, the intelligent power amplifier can be used for controlling the speaker to continue playing music.
In the embodiment of the present application, the specific implementation of the foregoing embodiment is elaborated, and whether the over-temperature protection processing needs to be performed on the speaker is further determined according to the temperature rise value of the speaker as well as the impedance change rate; therefore, the optimization of the traditional solution is realized, the probability of error protection is reduced, and the phenomenon that the loudspeaker outputs soundless due to the fact that the temperature of the loudspeaker is overhigh due to the fact that the contact impedance at the contact point is increased is effectively avoided.
In still another embodiment of the present application, it is assumed that the execution order is that the judgment of the temperature change is executed first, and then the judgment of the impedance change is executed. Thus, in some embodiments, for S103, when the impedance change rate is smaller than a preset change rate threshold and the temperature increase value exceeds a preset temperature threshold, performing an over-temperature protection process on the speaker through the smart power amplifier, which may include:
judging whether the temperature rise value exceeds a preset temperature threshold value or not;
when the temperature rise value exceeds a preset temperature threshold value, judging whether the impedance change rate is smaller than a preset change rate threshold value or not;
and when the impedance change rate is smaller than a preset change rate threshold value, carrying out over-temperature protection treatment on the loudspeaker through the intelligent power amplifier.
Further, in some embodiments, after determining whether the impedance change rate is less than a preset change rate threshold, the method may further include:
and when the impedance change rate is not less than a preset change rate threshold value, taking the first impedance value as a reference impedance value of the loudspeaker, and continuing to perform the step of collecting the impedance of the loudspeaker.
Further, in some embodiments, after determining whether the temperature increase value exceeds a preset temperature threshold, the method may further include:
and when the temperature rise value does not exceed a preset temperature threshold value, continuing to perform the step of acquiring the impedance of the loudspeaker.
It should be noted that, in order to reduce the probability of the false protection, the impedance increase is too large mainly for the contact of the speaker due to the introduction of grease, so that the calculated working condition with too large temperature increase value is further processed; based on this, the impedance rate of change can also be introduced on the basis of conventional solutions. That is to say, the embodiment of the present application not only determines whether the over-temperature protection processing needs to be performed on the speaker according to the temperature increase value of the speaker, but also further determines whether the over-temperature protection processing needs to be performed on the speaker according to the impedance change rate.
Referring to fig. 6, a detailed flow diagram of another over-temperature protection method provided in the embodiments of the present application is shown. As shown in fig. 6, after the electronic device is turned on, the impedance of the speaker may be collected first, and the impedance value is used as a reference impedance value of the speaker; in the process of playing music by the loudspeaker, the impedance of the loudspeaker can be acquired in real time to obtain a first impedance value of the loudspeaker; calculating an impedance increase value according to the reference impedance value and the first impedance value of the loudspeaker, and calculating a temperature increase value of the loudspeaker according to the conversion relation between the impedance and the temperature and the impedance increase value; thus, firstly, whether the temperature rise value exceeds a preset temperature threshold value is judged; when the temperature rise value does not exceed the preset temperature threshold value, the fact that the temperature of the loudspeaker is not over-temperature is indicated, the loudspeaker does not need to be subjected to over-temperature protection processing through the intelligent power amplifier, the step of collecting the impedance of the loudspeaker in real time can be returned at the moment, and the over-temperature protection method of the embodiment of the application is continuously executed; when the temperature rise value exceeds a preset temperature threshold value, the fact that the temperature of the loudspeaker is possibly over-temperature is indicated, at this time, judgment of impedance change can be carried out, and according to the reference impedance value of the loudspeaker and the first impedance value, the impedance change rate corresponding to the loudspeaker can be determined; judging whether the impedance change rate is smaller than a preset change rate threshold value or not; when the impedance change rate is not less than the preset change rate threshold, it indicates that the impedance value is suddenly increased, and then it can be determined that the change of the impedance is caused by the increase of the contact impedance at the contact point, which does not cause the temperature rise of the speaker or even the over-temperature, at this time, the first impedance value can be used as a new reference impedance value, and then the step of collecting the impedance of the speaker in real time is returned, and the over-temperature protection method of the embodiment of the application is continuously executed; when the impedance change rate is smaller than a preset change rate threshold value, the impedance value is indicated to be slowly increased, then the change of the impedance can be determined to be caused by the heating of the loudspeaker, and at the moment, the temperature of the loudspeaker is over-temperature, then the loudspeaker needs to be subjected to over-temperature protection processing through the intelligent power amplifier, so that the loudspeaker stops playing music, and the step of collecting the impedance of the loudspeaker in real time is still returned; therefore, when the second impedance value of the speaker is smaller than the preset impedance threshold value in the process that the speaker stops playing music, the intelligent power amplifier can be used for controlling the speaker to continue playing music.
In the embodiment of the present application, the specific implementation of the foregoing embodiment is elaborated, and not only the temperature rise value of the speaker is used to determine whether the over-temperature protection processing needs to be performed on the speaker, but also the impedance change rate is used to further determine whether the over-temperature protection processing needs to be performed on the speaker; therefore, the optimization of the traditional solution is realized, the probability of error protection is reduced, and the phenomenon that the loudspeaker outputs soundless due to the fact that the temperature of the loudspeaker is overhigh due to the fact that the contact impedance at the contact point is increased is effectively avoided.
Understandably, when the loudspeaker is subjected to the over-temperature protection treatment, the loudspeaker can be controlled by the intelligent power amplifier to stop playing music and be in a silent output state; in the process of stopping playing music, the temperature of the loudspeaker is reduced due to the fact that the loudspeaker stops working, and therefore the impedance of the loudspeaker is reduced; when the impedance is reduced to the preset impedance threshold value, the music can be played again. Thus, in yet another embodiment of the present application, for S103, the step may include:
when the impedance change rate is smaller than a preset change rate threshold value and the temperature rise value exceeds a preset temperature threshold value, controlling the intelligent power amplifier to output a first control signal; wherein the first control signal is used for controlling the loudspeaker to stop playing music;
when the second impedance value of the loudspeaker is smaller than a preset impedance threshold value, controlling the intelligent power amplifier to output a second control signal, and continuing to perform the step of collecting the impedance of the loudspeaker; the second control signal is used for controlling the loudspeaker to continue playing music, and the second impedance value is obtained by collecting the impedance of the loudspeaker in the process of stopping playing music.
It should be noted that, since the speaker has two states of silent output and audible output, the output signal of the smart power amplifier also has two forms, such as the first control signal and the second control signal. Here, the first control signal may be used to control the speaker to stop playing music while the speaker is in a silent output state; the second control signal may be used to control the speaker to continue playing music while the speaker is in an audible output state.
It should be further noted that the preset impedance threshold is a preset determination value for measuring whether the impedance of the speaker meets the requirement of recovering playing music; for example, the preset impedance threshold may be equal to the reference impedance value, and the embodiment of the present application is not particularly limited. Therefore, when the temperature rise value exceeds the preset temperature threshold value and the impedance change rate is smaller than the preset change rate threshold value, the over-temperature protection treatment needs to be carried out on the loudspeaker through the intelligent power amplifier. Specifically, first, outputting a first control signal through the intelligent power amplifier to control the loudspeaker to stop playing music, wherein the loudspeaker is in a silent output state; in the process of stopping playing music, the temperature of the loudspeaker is reduced due to the fact that the loudspeaker stops working, and therefore the impedance of the loudspeaker is reduced; after music playing is stopped for a period of time, when the collected second impedance value is smaller than the preset impedance threshold value, music playing can be resumed at this time, and the over-temperature protection method in the embodiment of the application is continuously executed.
It should be noted that when the impedance change rate is not less than the preset change rate threshold, it indicates that the impedance value is suddenly increased, and at this time, it is considered that the impedance change is caused by the increase of the contact impedance at the contact, and it does not cause the temperature of the speaker to increase or even cause an over-temperature. In this case, when the impedance change rate is not less than a preset change rate threshold, the method may further include:
in the process of playing music by the loudspeaker, the volume corresponding to the loudspeaker is reduced;
when the third impedance value of the loudspeaker is equal to the first impedance value, restoring the volume corresponding to the loudspeaker, taking the first impedance value as the reference impedance value of the loudspeaker, and continuing to perform the step of collecting the impedance of the loudspeaker; and the third impedance value is obtained by acquiring the impedance of the loudspeaker in the process of reducing the volume.
It should be noted that the volume reduction or restoration corresponding to the speaker may be implemented by an intelligent power amplifier. Specifically, according to the determined impedance change rate, if the impedance change rate is smaller than a preset change rate threshold value, which indicates that the impedance value is slowly increased, it may be determined that the impedance change is caused by the heating of the speaker, and at this time, the intelligent power amplifier may be controlled to perform the over-temperature protection process on the speaker; if the impedance change rate is not less than the preset change rate threshold value, which indicates that the impedance value is suddenly increased, it may be determined that the impedance change is caused by an increase in contact impedance at the contact point, and at this time, the volume corresponding to the speaker may be reduced by the intelligent power amplifier; in the process of volume reduction, when the third impedance value of the collected loudspeaker is still equal to the first impedance value, that is, the impedance is not changed, which further indicates that the change of the impedance is caused by the increase of the contact impedance at the contact point, at this time, the volume can be restored through the intelligent power amplifier, and the first impedance value is used as a reference impedance value, and then the over-temperature protection method of the embodiment of the present application is continuously performed.
It should also be noted that, in the embodiment of the present application, the manufacturing material of the contact may also be optimized, and a better material is adopted, so that poor contact at the contact is avoided, and the problem of increased contact impedance due to the contact is avoided as much as possible, thereby reducing the probability of error protection.
The above embodiments provide an over-temperature protection method, which is applied to an over-temperature protection device, and the over-temperature protection device is located in an electronic device. Acquiring a first impedance value of a loudspeaker by acquiring the impedance of the loudspeaker in the process of playing music by the loudspeaker; determining an impedance change rate corresponding to the loudspeaker according to the reference impedance value of the loudspeaker and the first impedance value; the reference impedance value is obtained by collecting the impedance of the loudspeaker before music is played; controlling an intelligent power amplifier to perform over-temperature protection processing on the loudspeaker based on the determined impedance change rate; therefore, the over-temperature protection processing is controlled by introducing the impedance change rate, so that the over-temperature protection function is realized, the traditional over-temperature protection scheme is optimized, the probability of error protection is reduced, and the phenomenon that the loudspeaker is subjected to silent output due to the fact that the temperature of the loudspeaker is over-high because the contact impedance at the contact point is increased is effectively avoided.
Based on the same inventive concept of the foregoing embodiment, referring to fig. 7, a composition structure of an over-temperature protection device 70 provided by an embodiment of the present application is shown, where the over-temperature protection device 70 may include: an acquisition unit 701, a determination unit 702 and a control unit 703; wherein the content of the first and second substances,
the acquisition unit 701 is configured to acquire the impedance of the speaker to obtain a first impedance value of the speaker in the process of playing music by the speaker;
the determining unit 702 is configured to determine an impedance change rate corresponding to the speaker according to a reference impedance value of the speaker and the first impedance value; the reference impedance value is obtained by collecting the impedance of the loudspeaker before music is played;
the control unit 703 is configured to control the intelligent power amplifier to perform over-temperature protection processing on the speaker based on the determined impedance change rate.
In the above solution, referring to fig. 7, the over-temperature protection device 70 may further include a calculating unit 704 configured to perform a difference calculation on the reference impedance value of the speaker and the first impedance value to obtain an impedance increasing value;
the determining unit 702 is further configured to determine a temperature increase value corresponding to the impedance increase value based on a calculated relationship between the impedance and the temperature acquired in advance.
In the foregoing solution, referring to fig. 7, the over-temperature protection device 70 may further include an over-temperature protection unit 705, configured to perform over-temperature protection processing on the speaker through the smart power amplifier when the impedance change rate is smaller than a preset change rate threshold and the temperature increase value exceeds a preset temperature threshold.
In the above solution, referring to fig. 7, the over-temperature protection device 70 may further include a determining unit 706 configured to determine whether the impedance change rate is smaller than a preset change rate threshold; when the impedance change rate is smaller than a preset change rate threshold value, judging whether the temperature rise value exceeds a preset temperature threshold value or not; and when the temperature rise value exceeds a preset temperature threshold value, carrying out over-temperature protection treatment on the loudspeaker through the intelligent power amplifier.
In the above solution, the determining unit 706 is further configured to determine whether the temperature increase value exceeds a preset temperature threshold; when the temperature rise value exceeds a preset temperature threshold value, judging whether the impedance change rate is smaller than a preset change rate threshold value or not; and when the impedance change rate is smaller than a preset change rate threshold value, carrying out over-temperature protection treatment on the loudspeaker through the intelligent power amplifier.
In the foregoing solution, the determining unit 706 is further configured to, when the impedance change rate is not less than a preset change rate threshold, use the first impedance value as a reference impedance value of the speaker, and continue to perform the step of collecting the impedance of the speaker.
In the above solution, the determining unit 706 is further configured to continue to perform the step of collecting the impedance of the speaker when the temperature increase value does not exceed a preset temperature threshold.
In the foregoing solution, the over-temperature protection unit 705 is specifically configured to control the intelligent power amplifier to output a first control signal when the impedance change rate is smaller than a preset change rate threshold and the temperature increase value exceeds a preset temperature threshold; wherein the first control signal is used for controlling the loudspeaker to stop playing music; when the second impedance value of the loudspeaker is smaller than a preset impedance threshold value, controlling the intelligent power amplifier to output a second control signal, and continuing to perform the step of collecting the impedance of the loudspeaker; the second control signal is used for controlling the loudspeaker to continue playing music, and the second impedance value is obtained by collecting the impedance of the loudspeaker in the process of stopping playing music.
In the above scheme, the collecting unit 701 is specifically configured to collect a voltage value and a current value corresponding to the speaker;
the calculating unit 704 is further configured to calculate according to the voltage value and the current value to obtain a first impedance value of the speaker.
It is understood that in this embodiment, a "unit" may be a part of a circuit, a part of a processor, a part of a program or software, etc., and may also be a module, or may also be non-modular. Moreover, each component in the embodiment may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware or a form of a software functional module.
Based on the understanding that the technical solution of the present embodiment essentially or a part contributing to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, and include several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method of the present embodiment. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Accordingly, the present embodiments provide a computer storage medium having stored thereon an over-temperature protection program that, when executed by at least one processor, performs the steps of the method of any of the preceding embodiments.
Based on the above-mentioned composition of the over-temperature protection device 70 and the computer storage medium, referring to fig. 8, a specific hardware structure of the over-temperature protection device 70 provided by the embodiment of the present application is shown, which may include: a network interface 801, a memory 802, and a processor 803; the various components are coupled together by a bus system 804. It is understood that the bus system 804 is used to enable communications among the components. The bus system 804 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled as bus system 804 in FIG. 8. The network interface 801 is used for receiving and sending signals in the process of receiving and sending information with other external network elements;
a memory 802 for storing a computer program capable of running on the processor 803;
a processor 803 for executing, when running the computer program, the following:
acquiring a first impedance value of a loudspeaker by acquiring the impedance of the loudspeaker in the process of playing music by the loudspeaker;
determining an impedance change rate corresponding to the loudspeaker according to the reference impedance value of the loudspeaker and the first impedance value; the reference impedance value is obtained by collecting the impedance of the loudspeaker before music is played;
and controlling an intelligent power amplifier to perform over-temperature protection processing on the loudspeaker based on the determined impedance change rate.
It will be appreciated that the memory 802 in the subject embodiment can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 802 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
And the processor 803 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 803. The Processor 803 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 802, and the processor 803 reads the information in the memory 802, and completes the steps of the above method in combination with the hardware thereof.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
Optionally, as another embodiment, the processor 803 is further configured to perform the steps of the method of any one of the previous embodiments when running the computer program.
Referring to fig. 9, a schematic diagram of a composition structure of an electronic device 90 provided in an embodiment of the present application is shown. As shown in fig. 9, in addition to the electronic device 90 including the speaker 901 and the smart power amplifier 902, the electronic device 90 may further include any over-temperature protection device 70 mentioned in the foregoing embodiments.
It should be noted that, in the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
The methods disclosed in the several method embodiments provided in the present application may be combined arbitrarily without conflict to obtain new method embodiments.
Features disclosed in several of the product embodiments provided in the present application may be combined in any combination to yield new product embodiments without conflict.
The features disclosed in the several method or apparatus embodiments provided in the present application may be combined arbitrarily, without conflict, to arrive at new method embodiments or apparatus embodiments.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method of over-temperature protection, the method comprising:
acquiring a first impedance value of a loudspeaker by acquiring the impedance of the loudspeaker in the process of playing music by the loudspeaker;
determining an impedance change rate corresponding to the loudspeaker according to the reference impedance value of the loudspeaker, the first impedance value and the acquisition time difference value; the reference impedance value is obtained by collecting the impedance of the loudspeaker before music is played;
controlling an intelligent power amplifier to perform over-temperature protection processing on the loudspeaker based on the determined impedance change rate;
wherein before controlling the intelligent power amplifier to perform over-temperature protection processing on the loudspeaker based on the determined impedance change rate, the method further comprises:
calculating the difference value of the reference impedance value of the loudspeaker and the first impedance value to obtain an impedance increasing value;
determining a temperature increase value corresponding to the impedance increase value based on a calculation relation between the impedance and the temperature which is acquired in advance;
correspondingly, the controlling the intelligent power amplifier to perform over-temperature protection processing on the loudspeaker based on the determined impedance change rate comprises the following steps:
when the impedance change rate is smaller than a preset change rate threshold value and the temperature rise value exceeds a preset temperature threshold value, carrying out over-temperature protection processing on the loudspeaker through the intelligent power amplifier;
after determining whether the rate of change of impedance is less than a preset rate of change threshold, the method further comprises:
and when the impedance change rate is not less than a preset change rate threshold value, taking the first impedance value as a reference impedance value of the loudspeaker, and continuing to perform the step of collecting the impedance of the loudspeaker.
2. The method of claim 1, wherein performing an over-temperature protection process on the speaker through the smart power amplifier when the impedance change rate is smaller than a preset change rate threshold and the temperature rise value exceeds a preset temperature threshold comprises:
judging whether the impedance change rate is smaller than a preset change rate threshold value or not;
when the impedance change rate is smaller than a preset change rate threshold value, judging whether the temperature rise value exceeds a preset temperature threshold value;
and when the temperature rise value exceeds a preset temperature threshold value, carrying out over-temperature protection treatment on the loudspeaker through the intelligent power amplifier.
3. The method of claim 1, wherein performing an over-temperature protection process on the speaker through the smart power amplifier when the impedance change rate is smaller than a preset change rate threshold and the temperature rise value exceeds a preset temperature threshold comprises:
judging whether the temperature rise value exceeds a preset temperature threshold value or not;
when the temperature rise value exceeds a preset temperature threshold value, judging whether the impedance change rate is smaller than a preset change rate threshold value or not;
and when the impedance change rate is smaller than a preset change rate threshold value, carrying out over-temperature protection treatment on the loudspeaker through the intelligent power amplifier.
4. The method of claim 2 or 3, wherein after determining whether the temperature increase value exceeds a preset temperature threshold, the method further comprises:
and when the temperature rise value does not exceed a preset temperature threshold value, continuing to perform the step of acquiring the impedance of the loudspeaker.
5. The method of claim 1, wherein controlling a smart power amplifier to over-temperature protect the speaker based on the determined rate of change of impedance comprises:
when the impedance change rate is smaller than a preset change rate threshold value and the temperature rise value exceeds a preset temperature threshold value, controlling the intelligent power amplifier to output a first control signal; wherein the first control signal is used for controlling the loudspeaker to stop playing music;
when the second impedance value of the loudspeaker is smaller than a preset impedance threshold value, controlling the intelligent power amplifier to output a second control signal, and continuing to perform the step of collecting the impedance of the loudspeaker; the second control signal is used for controlling the loudspeaker to continue playing music, and the second impedance value is obtained by collecting the impedance of the loudspeaker in the process of stopping playing music.
6. The method of claim 1, wherein obtaining a first impedance value for the speaker by collecting an impedance of the speaker comprises:
collecting a voltage value and a current value corresponding to the loudspeaker;
and calculating according to the voltage value and the current value to obtain a first impedance value of the loudspeaker.
7. An over-temperature protection device, comprising: the device comprises an acquisition unit, a determination unit and a control unit; wherein the content of the first and second substances,
the acquisition unit is configured to acquire the impedance of the loudspeaker in the process of playing music by the loudspeaker to obtain a first impedance value of the loudspeaker;
the determining unit is configured to determine an impedance change rate corresponding to the loudspeaker according to a reference impedance value of the loudspeaker, the first impedance value and a collection time difference value; the reference impedance value is obtained by collecting the impedance of the loudspeaker before music is played;
the control unit is configured to control the intelligent power amplifier to perform over-temperature protection processing on the loudspeaker based on the determined impedance change rate;
the over-temperature protection device further comprises a calculation unit, wherein the calculation unit is configured to calculate a difference value between the reference impedance value of the loudspeaker and the first impedance value to obtain an impedance increase value;
the determining unit is further configured to determine a temperature increase value corresponding to the impedance increase value based on a calculation relationship between the impedance and the temperature acquired in advance;
the over-temperature protection device further comprises an over-temperature protection unit, and the over-temperature protection unit is configured to perform over-temperature protection processing on the loudspeaker through the intelligent power amplifier when the impedance change rate is smaller than a preset change rate threshold and the temperature rise value exceeds a preset temperature threshold;
the over-temperature protection device further comprises a judging unit, wherein the judging unit is configured to use the first impedance value as a reference impedance value of the loudspeaker and continue to perform the step of collecting the impedance of the loudspeaker when the impedance change rate is not smaller than a preset change rate threshold value.
8. An over-temperature protection device, comprising: a memory and a processor; wherein the content of the first and second substances,
the memory for storing a computer program operable on the processor;
the processor, when executing the computer program, is adapted to perform the steps of the method of any of claims 1 to 6.
9. A computer storage medium, characterized in that the computer storage medium stores an over-temperature protection program, which when executed by at least one processor implements the steps of the method according to any one of claims 1 to 6.
10. An electronic device, characterized in that the electronic device comprises at least a loudspeaker, a smart power amplifier and an over-temperature protection device according to claim 7 or 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910472192.9A CN110225434B (en) | 2019-05-31 | 2019-05-31 | Over-temperature protection method and device, computer storage medium and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910472192.9A CN110225434B (en) | 2019-05-31 | 2019-05-31 | Over-temperature protection method and device, computer storage medium and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110225434A CN110225434A (en) | 2019-09-10 |
| CN110225434B true CN110225434B (en) | 2021-01-12 |
Family
ID=67819295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910472192.9A Expired - Fee Related CN110225434B (en) | 2019-05-31 | 2019-05-31 | Over-temperature protection method and device, computer storage medium and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110225434B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113163305B (en) * | 2020-01-07 | 2022-09-13 | 青岛海信移动通信技术股份有限公司 | Audio playing terminal and protection method of loudspeaker thereof |
| CN111260377A (en) * | 2020-01-09 | 2020-06-09 | 广州美立达电子技术有限公司 | After-sale service system and use method thereof |
| CN112965551A (en) * | 2021-01-29 | 2021-06-15 | 维沃移动通信有限公司 | Heating control method and device for loudspeaker |
| CN113518287B (en) * | 2021-07-14 | 2023-04-25 | 歌尔科技有限公司 | Device state adjusting method, terminal device and computer readable storage medium |
| CN115313318B (en) * | 2022-09-01 | 2023-05-23 | 芯洲科技(北京)股份有限公司 | Device and method for over-temperature protection of electronic components |
| CN117082419B (en) * | 2023-10-18 | 2024-04-02 | 荣耀终端有限公司 | Speaker control method, system, device, apparatus and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102348147A (en) * | 2010-06-16 | 2012-02-08 | Nxp股份有限公司 | Control of loudspeaker output |
| CN103813236A (en) * | 2012-11-07 | 2014-05-21 | 飞兆半导体公司 | Methods and apparatus related to protection of a speaker |
| CN107734427A (en) * | 2017-09-13 | 2018-02-23 | 广州市迪士普信息科技有限公司 | A kind of guard method and device according to voice coil loudspeaker voice coil temperature rise adjust automatically speaker volume |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8259953B2 (en) * | 2008-04-10 | 2012-09-04 | Bang & Olufsen Icepower A/S | Thermal protection of electro dynamic transducers used in loudspeaker systems |
-
2019
- 2019-05-31 CN CN201910472192.9A patent/CN110225434B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102348147A (en) * | 2010-06-16 | 2012-02-08 | Nxp股份有限公司 | Control of loudspeaker output |
| CN103813236A (en) * | 2012-11-07 | 2014-05-21 | 飞兆半导体公司 | Methods and apparatus related to protection of a speaker |
| CN107734427A (en) * | 2017-09-13 | 2018-02-23 | 广州市迪士普信息科技有限公司 | A kind of guard method and device according to voice coil loudspeaker voice coil temperature rise adjust automatically speaker volume |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110225434A (en) | 2019-09-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110225434B (en) | Over-temperature protection method and device, computer storage medium and electronic equipment | |
| EP3416041B1 (en) | Sound effect processing method, and terminal device | |
| CN110178381A (en) | Loudspeaker protection offset supervision | |
| JP6306713B2 (en) | Reproduction loudness adjustment method and apparatus | |
| US20160066113A1 (en) | Selective enabling of a component by a microphone circuit | |
| TWI681679B (en) | Method and apparatus for speaker adaptation with voltage-to-excursion conversion | |
| CN103295604B (en) | Method, device and terminal that a kind of control terminal is play | |
| CN103702253B (en) | A kind of information processing method and electronic equipment | |
| CN103929692B (en) | Audio information processing method and electronic equipment | |
| JP2008005269A (en) | Noise-canceling headphone | |
| JP2009151705A (en) | Information processor and control method therefor | |
| CN107681993B (en) | Method for adjusting audio parameters and mobile terminal | |
| CN1929298B (en) | Audio frequency processing system and method | |
| CN104571856A (en) | Terminal | |
| CN110611862A (en) | Microphone gain adjusting method, device, system and storage medium | |
| TW201406124A (en) | Electronic device with function of prompting current running program and method thereof | |
| CN110731087B (en) | Volume adjusting method and device, mobile terminal and storage medium | |
| US20130285817A1 (en) | Customizable alarm sytem and method for computer | |
| CN109324644B (en) | Method and device for controlling vibration of vibration source | |
| CN115691497B (en) | Voice control method, device, equipment and medium | |
| CN113760618A (en) | State determination method, electronic equipment and storage medium | |
| CN112312258B (en) | Intelligent earphone with hearing protection and hearing compensation | |
| WO2019033439A1 (en) | Volume adjustment method, apparatus, storage medium, and mobile terminal | |
| JP6538002B2 (en) | Target sound collection device, target sound collection method, program, recording medium | |
| CN114089944A (en) | Screen protection method, electronic device and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210112 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |