CN115523177B - Fan rotating speed control method, device, equipment and medium - Google Patents
Fan rotating speed control method, device, equipment and medium Download PDFInfo
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- 206010067484 Adverse reaction Diseases 0.000 description 2
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- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The application discloses a fan rotating speed control method, a device, equipment and a medium, which are applied to the technical field of fan rotating speed control and comprise the following steps: determining a rotation speed regulation basic value of the fan; acquiring a first corresponding relation between the rotating speed regulating quantity and time; the rotational speed adjustment amount fluctuates with time; determining a second corresponding relation of the fan rotating speed and time based on the rotating speed adjusting basic value and the first corresponding relation; wherein, the rotating speed of the fan is the sum of the rotating speed regulating basic value and the rotating speed regulating quantity; and controlling the rotating speed of the fan based on the second corresponding relation. Like this, can play the spread spectrum effect to fan noise to promote user experience.
Description
Technical Field
The present disclosure relates to the field of fan speed control technologies, and in particular, to a method, an apparatus, a device, and a medium for controlling a fan speed.
Background
In a heat dissipation system of an electronic device, a fan is often used to enhance the heat convection effect so as to achieve the purpose of heat dissipation of the system. Generally, a heat dissipation system in an electronic device adjusts the fan speed according to the pressure load condition of the electronic device. For a certain fixed operating condition (relatively stable pressure load), the fan will be adjusted to a fixed speed for driving the heat dissipation system to carry away a specific amount of heat. Therefore, the noise energy generated by the fan is concentrated and distributed in a certain fixed frequency band, and the continuous strong noise caused by the concentrated noise can cause adverse reactions such as dysphoria, emotional upset and the like to equipment users.
Disclosure of Invention
In view of this, an object of the present application is to provide a method, an apparatus, a device, and a medium for controlling a fan rotation speed, which can achieve a frequency spreading effect on fan noise, thereby improving user experience. The specific scheme is as follows:
in a first aspect, the present application discloses a method for controlling a rotational speed of a fan, comprising:
determining a rotation speed regulation basic value of the fan;
acquiring a first corresponding relation between the rotating speed regulating quantity and time; the rotational speed adjustment amount fluctuates with time;
determining a second corresponding relation of the fan rotating speed and time based on the rotating speed adjusting basic value and the first corresponding relation; wherein, the rotating speed of the fan is the sum of the rotating speed regulating basic value and the rotating speed regulating quantity;
and controlling the rotating speed of the fan based on the second corresponding relation.
Optionally, the determining a base value of the speed adjustment of the fan includes:
determining ventilation quantity according to the heat dissipation requirement of the equipment;
determining a target rotation speed of the fan based on the ventilation amount and a characteristic parameter of the fan;
a speed adjustment base value of the fan is determined based on the target speed.
Optionally, the determining a base value of the speed adjustment of the fan based on the target speed includes:
acquiring an adjusting value corresponding to the rotating speed adjusting basic value;
and adjusting the target rotating speed based on the adjusting value to obtain a rotating speed adjusting basic value of the fan.
Optionally, the obtaining a first corresponding relationship between the rotation speed adjustment amount and time includes:
a first correspondence of a rotational speed adjustment amount determined based on a music file with time is obtained.
Optionally, the process of determining the first corresponding relationship between the rotation speed adjustment amount and the time based on the music file includes:
determining a pitch sequence corresponding to a music file and a duration corresponding to each pitch in the pitch sequence;
determining a rotating speed regulating quantity corresponding to each pitch in the pitch sequence by utilizing a preset proportional coefficient;
and determining a first corresponding relation between the rotating speed adjustment amount and time based on the rotating speed adjustment amount and the time length corresponding to each pitch.
Optionally, the obtaining a first corresponding relationship between the rotation speed adjustment amount determined based on the music file and the time includes:
acquiring a first corresponding relation corresponding to the fan from a preset library; the preset library comprises corresponding relations between rotating speed regulating quantities and time which are determined based on a plurality of music files respectively.
Optionally, the obtaining a first corresponding relationship between the rotation speed adjustment amount determined based on the music file and time includes:
the method comprises the steps of acquiring a music file input by a user, and determining a first corresponding relation between the rotating speed regulating quantity and time based on the music file.
Optionally, the determining a second corresponding relationship between the fan speed and the time based on the speed adjustment basic value and the first corresponding relationship includes:
adjusting the first corresponding relation based on the speed changing capacity of the fan to obtain an adjusted first corresponding relation;
and determining a second corresponding relation between the fan rotating speed and time based on the rotating speed adjusting basic value and the adjusted first corresponding relation.
Optionally, the obtaining a first corresponding relationship between the rotation speed adjustment amount and time includes:
and acquiring a sine function which takes the rotating speed regulating quantity as a function value and takes time as an independent variable value.
Optionally, the obtaining a first corresponding relationship between the rotation speed adjustment amount and time includes:
and acquiring a square wave function which takes the rotating speed regulating quantity as a function value and takes time as an independent variable value.
Optionally, the controlling the rotation speed of the fan based on the second corresponding relationship includes:
and outputting a pulse width adjusting signal based on the second corresponding relation, and controlling the rotating speed of the fan based on the pulse width adjusting signal.
Optionally, the controlling the rotation speed of the fan based on the second corresponding relationship includes:
and determining a fan power supply voltage based on the second corresponding relation so as to control the rotating speed of the fan.
In a second aspect, the present application discloses a fan rotational speed control apparatus, comprising:
the rotating speed regulation basic value determining module is used for determining a rotating speed regulation basic value of the fan;
the first corresponding relation acquisition module is used for acquiring a first corresponding relation between the rotating speed regulating quantity and time; the rotational speed adjustment amount fluctuates with time;
the second corresponding relation determining module is used for determining a second corresponding relation between the fan rotating speed and time based on the rotating speed adjusting basic value and the first corresponding relation; wherein, the rotating speed of the fan is the sum of the rotating speed regulating basic value and the rotating speed regulating quantity;
and the fan rotating speed control module is used for controlling the rotating speed of the fan based on the second corresponding relation.
Optionally, the rotation speed adjustment basic value determining module specifically includes:
the ventilation quantity determining submodule is used for determining the ventilation quantity according to the heat dissipation requirement of the equipment;
a target rotation speed determination submodule for determining a target rotation speed of the fan based on the ventilation amount and the characteristic parameter of the fan;
and the rotation speed regulation basic value determining submodule is used for determining a rotation speed regulation basic value of the fan based on the target rotation speed.
Optionally, the rotation speed adjustment basic value determining submodule specifically includes:
the adjusting value acquiring unit is used for acquiring an adjusting value corresponding to the rotating speed adjusting basic value;
and the rotating speed adjusting basic value determining unit is used for adjusting the target rotating speed based on the adjusting value to obtain a rotating speed adjusting basic value of the fan.
Optionally, the first corresponding relationship obtaining module is configured to obtain a first corresponding relationship between a rotation speed adjustment amount determined based on the music file and time.
The process of the first corresponding relation between the rotating speed regulating quantity and the time determined based on the music file comprises the following steps:
determining a pitch sequence corresponding to a music file and a duration corresponding to each pitch in the pitch sequence;
determining the rotating speed regulating quantity corresponding to each pitch in the pitch sequence by utilizing a preset proportionality coefficient;
and determining a first corresponding relation between the rotating speed adjustment amount and time based on the rotating speed adjustment amount corresponding to each pitch and the time length.
Optionally, the first corresponding relationship obtaining module is specifically configured to obtain a first corresponding relationship corresponding to the fan from a preset library; the preset library comprises corresponding relations between rotating speed regulating quantities and time which are determined based on a plurality of music files respectively.
Optionally, the first corresponding relationship obtaining module is specifically configured to obtain a music file input by a user, and determine a first corresponding relationship between the rotation speed adjustment amount and time based on the music file.
Optionally, the second corresponding relationship determining module specifically includes:
the first corresponding relation adjusting submodule is used for adjusting the first corresponding relation based on the speed changing capacity of the fan to obtain an adjusted first corresponding relation;
and the second corresponding relation determining submodule is used for determining a second corresponding relation between the rotating speed of the fan and time based on the rotating speed adjusting basic value and the adjusted first corresponding relation.
Optionally, the first corresponding relationship obtaining module is configured to obtain a sine function with the rotation speed adjustment amount as a function value and with time as an argument value.
Optionally, the first corresponding relation obtaining module is configured to obtain a square wave function using the rotation speed adjustment amount as a function value and using time as an argument value.
Optionally, the fan speed control module is specifically configured to: and outputting a pulse width adjusting signal based on the second corresponding relation, and controlling the rotating speed of the fan based on the pulse width adjusting signal.
Optionally, the fan speed control module is specifically configured to: and determining a fan power supply voltage based on the second corresponding relation so as to control the rotating speed of the fan.
In a third aspect, the present application discloses an electronic device comprising a memory and a processor, wherein:
the memory is used for storing a computer program;
the processor is configured to execute the computer program to implement the aforementioned fan speed control method.
In a fourth aspect, the present application discloses a computer readable storage medium for storing a computer program, wherein the computer program, when executed by a processor, implements the aforementioned fan speed control method.
Therefore, the method and the device determine a rotation speed regulation basic value of the fan, acquire a first corresponding relation between a rotation speed regulation amount and time, wherein the rotation speed regulation amount fluctuates along with the time, and then determine a second corresponding relation between the rotation speed of the fan and the time based on the rotation speed regulation basic value and the first corresponding relation; and finally, controlling the rotating speed of the fan based on the second corresponding relation. That is, the first corresponding relation of obtaining the rotating speed regulating quantity and the time is determined, the rotating speed regulating quantity fluctuates along with the time, the second corresponding relation of the rotating speed of the fan and the time is determined based on the rotating speed regulating basic value and the first corresponding relation, the rotating speed regulating quantity fluctuates along with the time in the first corresponding relation, the rotating speed of the fan is the sum of the rotating speed regulating basic value and the rotating speed regulating quantity in the second corresponding relation, the rotating speed of the fan is controlled based on the second corresponding relation, and the rotating speed of the fan can also fluctuate along with the time, so that the rotating speed of the fan is not fixed at a certain specific rotating speed under a certain working condition any more, but fluctuates along with the time, the frequency spreading effect can be achieved on the noise of the fan, sensory evaluation of a user on the noise is weakened, and the user experience is improved.
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In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a method for controlling a rotational speed of a fan according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram illustrating a comparison of fan speed control according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating frequency domain comparison of noise power of a fan according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a fan rotation speed control apparatus according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an electronic device disclosed in 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 only a part of the embodiments of the present application, and not all of the embodiments. 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.
In a heat dissipation system of an electronic device, a fan is often used to enhance the heat convection effect so as to achieve the purpose of heat dissipation of the system. Generally, a heat dissipation system in an electronic device adjusts the fan speed according to the pressure load condition of the electronic device. For a certain fixed operating condition (relatively stable pressure load), the fan will be adjusted to a fixed speed for driving the heat dissipation system to carry away a specific amount of heat. Therefore, the noise energy generated by the fan is concentrated and distributed in a certain fixed frequency band, and the continuous strong noise caused by the concentrated noise can cause adverse reactions such as dysphoria, emotional upset and the like to equipment users. Therefore, the application provides a fan rotating speed control scheme, which can play a frequency spreading effect on fan noise, so that the user experience is improved.
Referring to fig. 1, an embodiment of the present application discloses a method for controlling a rotational speed of a fan, including:
step S11: and determining a rotation speed regulation base value of the fan.
In a specific embodiment, step S11 may specifically include the following steps:
step 00: and determining ventilation quantity according to the heat dissipation requirement of the equipment.
In a specific embodiment, the heat dissipation requirement may be a target temperature for heat dissipation of the electronic device, and the current temperature of the device may be obtained, a temperature difference between the target temperature and the current temperature may be determined, and the ventilation amount may be determined based on the temperature difference.
Step 01: determining a target rotation speed of the fan based on the ventilation amount and the characteristic parameter of the fan.
In particular embodiments, the target rotational speed of the fan may be determined based on the ventilation amount and a PQ characteristic curve of the fan.
Step 02: a speed adjustment base value of the fan is determined based on the target speed.
In one embodiment, an adjustment value corresponding to the base value of the rotational speed adjustment may be obtained; and adjusting the target rotating speed based on the adjusting value to obtain a rotating speed adjusting basic value of the fan. The regulating value is determined based on a disturbance margin requirement and/or a noise margin requirement, the regulating value input by a user can be obtained, and a rotating speed regulating base value is obtained by adding the regulating value or subtracting the regulating value from the target rotating speed.
That is, according to the embodiment of the application, the ventilation required for heat dissipation is calculated according to the heat dissipation requirement of the equipment under a certain working condition, the rotating speed which the fan should reach is obtained according to the inherent characteristic parameters of the fan, and necessary addition and subtraction are performed on the basis of the rotating speed to obtain the rotating speed adjusting basic value. When the regulating value is determined, the heat dissipation allowance and the noise allowance are comprehensively considered, the rotating speed is properly increased for increasing the heat dissipation allowance, and the rotating speed can be properly reduced for increasing the noise allowance.
Step S12: acquiring a first corresponding relation between the rotating speed regulating quantity and time; the rotational speed adjustment amount fluctuates with time.
In the first embodiment, a first correspondence of the rotation speed adjustment amount determined based on the music file with time may be acquired. The process of the first corresponding relation between the rotating speed regulating quantity and the time determined based on the music file comprises the following steps: determining a pitch sequence corresponding to a music file and a duration corresponding to each pitch in the pitch sequence; determining the rotating speed regulating quantity corresponding to each pitch in the pitch sequence by utilizing a preset proportionality coefficient; and determining a first corresponding relation between the rotating speed adjustment amount and time based on the rotating speed adjustment amount corresponding to each pitch and the time length. That is, each rotational speed adjustment corresponds to the duration of the corresponding pitch, so that the first corresponding relationship is a range of time with the total duration of the music file as an argument, and the rotational speed adjustment is a function of the function value.
The specific process of determining the rotating speed adjustment amount corresponding to each pitch in the pitch sequence by using the preset proportionality coefficient may be: converting each pitch in the pitch sequence to a preset range, wherein the absolute values of two end points in the preset range are the same, one end point is a positive number, and the other end point is a negative number, such as [ -64 to 64], multiplying each pitch converted to the preset range by a preset proportionality coefficient to obtain the rotating speed regulating quantity corresponding to each pitch, wherein the preset proportionality coefficient is a coefficient determined based on the fan capacity and the heat dissipation requirement, for example, the upper and lower floating does not exceed 1000 turns, and the coefficients can be selected from 50, 100 and the like. In a specific embodiment, after each pitch in the pitch sequence is scaled to a preset range, an average value of the pitch sequence may be calculated, and if the average value does not belong to the preset deviation range, each pitch in the pitch sequence is adjusted based on the average value, for example, if the average value is-10, each pitch is increased by 10. In addition, the music files can be screened based on pitch distribution, most of the music files with lower or higher pitches are removed, specifically, the average value of the pitch sequence of the music files can be calculated, and if the average value is greater than a first preset threshold or smaller than a second preset threshold, the average value is removed, and the average value is not used for calculating the rotating speed regulating quantity.
In one embodiment, the first corresponding relationship corresponding to the fan may be obtained from a preset library; the preset library comprises corresponding relations between rotating speed regulating quantities and time which are determined based on a plurality of music files respectively. And, according to performance parameters of the fan, such as the maximum rotation speed and the speed change capability, that is, the time consumed for realizing speed change, obtaining a first corresponding relationship corresponding to the fan from a preset library, specifically, determining a corresponding relationship satisfying a first condition and a second condition from the preset library to obtain the first corresponding relationship corresponding to the fan, where the first condition is that the sum of the rotation speed adjustment basic value and the maximum rotation speed adjustment amount in the corresponding relationship is less than the maximum rotation speed, the second condition is that the speed change capability of the fan is matched, that is, the duration corresponding to any rotation speed adjustment amount is greater than the second corresponding relationship consumed for realizing speed change of the fan, so as to obtain the first corresponding relationship, and if the corresponding relationship does not satisfy both the first condition and the second condition, the corresponding relationship satisfying the first condition may be determined as the first corresponding relationship corresponding to the fan. In another embodiment, a music file input by a user may be obtained, and a first correspondence of the rotation speed adjustment amount with time may be determined based on the music file. That is, the user can customize music, and the music file automatically imported by the user is calculated by using the calculation capability of the electronic device to obtain the first corresponding relationship.
It can be understood that the musical sound in the music file is regularly and simply vibrated and has accurate and high-level sound, so that the regular regulation of the rotating speed of the fan can be realized, and the rotating speed of the fan can be regulated and changed in order.
In the second embodiment, a sine function having the rotation speed adjustment amount as a function value and the time as an argument value may be obtained.
In a third embodiment, a square wave function with the rotation speed adjustment amount as a function value and time as an argument value can be obtained.
Of course, in other embodiments, the first corresponding relationship may be other periodic waves or other custom functions. Thus, the fan speed can be controlled based on a self-defined function, for example, as shown in fig. 2, fig. 2 is a schematic diagram of comparing the fan speed control disclosed in the embodiment of the present application, fig. 2 (a) is a schematic diagram of controlling the fan speed in the prior art, fig. 2 (b) is a schematic diagram of controlling the fan speed in the embodiment of the present application, a first corresponding relationship is a self-defined function, and as can be seen from fig. 2, compared with the conventional heat dissipation control in which the fan is controlled to rotate at a certain fixed speed under a certain working condition, the embodiment of the present application performs regular movement modulation control on the fan speed, and the fan speed is modulated to fluctuate up and down and change of fluctuation time is slow.
Step S13: determining a second corresponding relation of the fan rotating speed and time based on the rotating speed adjusting basic value and the first corresponding relation; wherein, the fan rotating speed is the sum of the rotating speed adjusting basic value and the rotating speed adjusting quantity.
That is, the second corresponding relationship between the fan speed and the time is obtained by adding the speed adjustment basic value to each speed adjustment in the first corresponding relationship.
Further, in one embodiment, the first corresponding relationship may be adjusted based on a speed change capability of the fan, resulting in an adjusted first corresponding relationship; and determining a second corresponding relation between the fan rotating speed and time based on the rotating speed adjusting basic value and the adjusted first corresponding relation.
If the speed change capability of the fan cannot meet the first corresponding relationship between the acquired speed adjustment amount determined based on the music file and the time, all the time lengths can be amplified in an equal ratio, for example, the speed change capability of the fan is 1S to realize speed change, and the time length of 0.5S exists in the first corresponding relationship, all the time lengths are multiplied by 2. Of course, when the preset library is established, preprocessing may be performed, and geometric amplification of all the durations is performed on the correspondence that a certain duration is smaller than the preset threshold. If the speed change capability of the fan cannot meet the obtained square wave function, the duration corresponding to the corresponding function value can be amplified in an equal ratio.
Step S14: and controlling the rotating speed of the fan based on the second corresponding relation.
In one embodiment, a Pulse Width Modulation (PWM) signal may be output based on the second correspondence, and the rotation speed of the fan may be controlled based on the PWM signal.
In another embodiment, a fan supply voltage may be determined based on the second correspondence to control a speed of the fan.
It can be understood that the PWM signal is commonly used for adjusting the duty ratio of the fan, and for the fan that does not support the PWM control method, the ADC (analog to digital converter) circuit on the motherboard can also be used to convert the PWM signal change into the change of the fan supply voltage, and perform similar type modulation on the fan driving voltage, so as to finally realize the regular modulation of the fan rotation speed.
Further, if the first corresponding relationship between the rotation speed adjustment amount determined based on the music file and the time is obtained, and the time range of the finally obtained second corresponding relationship is the total duration of the music file, the total duration of the music file can be used as a period, and the rotation speed of the fan is periodically controlled based on the second corresponding relationship.
For example, in the electronic device, a function library, that is, a preset library, determined according to different music files is stored, the programmable control chip calculates a speed regulation base value under a certain working condition according to parameters of the fan body, the temperature condition in the device and the like, and outputs a PWM signal for regulating the rotation speed of the fan in combination with the fan rotation speed function and controls and regulates the speed of the fan, so that the rotation speed of the fan fluctuates according to musical tones. The method has the advantages that the sound caused by the fan is regulated to have rhythm, and the rotating speed of the fan is not fixed at a specific rotating speed under a certain working condition, so that the fan noise has a frequency spreading effect, the noise generated by the fan is represented in a frequency domain as the effect that the sound energy (sound power) is highly concentrated from a certain frequency band to be released to a nearby frequency band, the projecting ratio (sound ratio) of the fan noise is reduced, and the sensory evaluation of a user on the noise is weakened. Spread spectrum, i.e. spread spectrum technology, changes a peak signal from a narrowband signal to a spectrum with sidebands by modulating the peak signal, and disperses the peak energy to a plurality of frequency segments in a spread spectrum region, thereby achieving the effects of reducing the peak energy and suppressing noise, as shown in fig. 3, fig. 3 is a comparison schematic diagram of a fan noise sound power in a frequency domain provided in an embodiment of the present application, fig. 3 (a) is a schematic diagram of a fan noise sound power in the prior art, and fig. 3 (b) is a schematic diagram of a fan noise sound power in an embodiment of the present application.
Therefore, the method and the device for determining the fan speed adjustment basic value determine the fan speed adjustment basic value, acquire the first corresponding relation between the fan speed adjustment amount and time, wherein the fan speed adjustment amount fluctuates along with the time, and then determine the second corresponding relation between the fan speed and the time based on the fan speed adjustment basic value and the first corresponding relation; and finally, controlling the rotating speed of the fan based on the second corresponding relation. That is, the first corresponding relation of the obtained rotating speed regulating quantity and time is determined, the rotating speed regulating quantity fluctuates along with time, the second corresponding relation of the rotating speed of the fan and the time is determined based on the rotating speed regulating basic value and the first corresponding relation, the rotating speed of the fan fluctuates along with time in the first corresponding relation, the rotating speed of the fan is the sum of the rotating speed regulating basic value and the rotating speed regulating quantity in the second corresponding relation, and the rotating speed of the fan is controlled based on the second corresponding relation.
Referring to fig. 4, an embodiment of the present application discloses a fan speed control apparatus, including:
a rotation speed adjustment basic value determining module 11, configured to determine a rotation speed adjustment basic value of the fan;
a first corresponding relation obtaining module 12, configured to obtain a first corresponding relation between a rotation speed adjustment amount and time; the rotational speed adjustment amount fluctuates with time;
a second corresponding relation determining module 13, configured to determine a second corresponding relation between the fan rotation speed and time based on the rotation speed adjustment basic value and the first corresponding relation; wherein, the rotating speed of the fan is the sum of the rotating speed regulating basic value and the rotating speed regulating quantity;
and a fan rotation speed control module 14, configured to control a rotation speed of the fan based on the second correspondence.
Therefore, the method and the device for controlling the fan speed are used for determining the basic value of the fan speed regulation, obtaining the first corresponding relation between the speed regulation quantity and time, wherein the speed regulation quantity fluctuates along with the time, and then determining the second corresponding relation between the fan speed and the time based on the basic value of the speed regulation and the first corresponding relation; and finally, controlling the rotating speed of the fan based on the second corresponding relation. That is, the first corresponding relation of obtaining the rotating speed regulating quantity and the time is determined, the rotating speed regulating quantity fluctuates along with the time, the second corresponding relation of the rotating speed of the fan and the time is determined based on the rotating speed regulating basic value and the first corresponding relation, the rotating speed regulating quantity fluctuates along with the time in the first corresponding relation, the rotating speed of the fan is the sum of the rotating speed regulating basic value and the rotating speed regulating quantity in the second corresponding relation, the rotating speed of the fan is controlled based on the second corresponding relation, and the rotating speed of the fan can also fluctuate along with the time, so that the rotating speed of the fan is not fixed at a certain specific rotating speed under a certain working condition any more, but fluctuates along with the time, the frequency spreading effect can be achieved on the noise of the fan, sensory evaluation of a user on the noise is weakened, and the user experience is improved.
The rotation speed adjustment basic value determining module 11 specifically includes:
the ventilation quantity determining submodule is used for determining the ventilation quantity according to the heat dissipation requirement of the equipment;
a target rotation speed determination submodule for determining a target rotation speed of the fan based on the ventilation amount and the characteristic parameter of the fan;
and the rotating speed regulation basic value determining submodule is used for determining a rotating speed regulation basic value of the fan based on the target rotating speed.
The heat dissipation requirement can be a target temperature of heat dissipation of the electronic equipment, the ventilation quantity determining submodule can acquire the current temperature of the equipment, determine the temperature difference between the target temperature and the current temperature, and determine the ventilation quantity based on the temperature difference. In a specific embodiment, the target rotation speed determination submodule is configured to determine the target rotation speed of the fan based on the ventilation amount and a PQ characteristic curve of the fan.
In one embodiment, the rotation speed adjustment basic value determining submodule specifically includes:
the adjusting value obtaining unit is used for obtaining an adjusting value corresponding to the rotating speed adjusting basic value;
and the rotating speed adjusting basic value determining unit is used for adjusting the target rotating speed based on the adjusting value to obtain a rotating speed adjusting basic value of the fan.
The adjustment value is an adjustment value determined based on a disturbance margin requirement and/or a noise margin requirement, and in one embodiment, the adjustment value obtaining unit may be configured to obtain an adjustment value input by a user, and obtain a rotation speed adjustment base value by adding or subtracting the adjustment value to or from a target rotation speed. When the regulating value is determined, the heat dissipation allowance and the noise allowance are comprehensively considered, the rotating speed is properly increased for increasing the heat dissipation allowance, and the rotating speed can be properly reduced by considering the increase of the noise allowance.
In the first embodiment, the first corresponding relation obtaining module 12 may be configured to obtain a first corresponding relation between a rotation speed adjustment amount determined based on the music file and time.
The process of the first corresponding relation between the rotating speed regulating quantity and the time determined based on the music file comprises the following steps:
determining a pitch sequence corresponding to a music file and a duration corresponding to each pitch in the pitch sequence;
determining the rotating speed regulating quantity corresponding to each pitch in the pitch sequence by utilizing a preset proportionality coefficient;
and determining a first corresponding relation between the rotating speed adjustment amount and time based on the rotating speed adjustment amount corresponding to each pitch and the time length.
That is, each rotational speed adjustment corresponds to the duration of the corresponding pitch, so that the first corresponding relationship is a range of time with the total duration of the music file as an argument, and the rotational speed adjustment is a function of the function value.
Further, in an embodiment, the first corresponding relation obtaining module 12 is specifically configured to obtain a first corresponding relation corresponding to the fan from a preset library; the preset library comprises corresponding relations between rotating speed regulating quantities and time which are determined based on a plurality of music files respectively. In another embodiment, the first corresponding relation obtaining module 12 is specifically configured to obtain a music file input by a user, and determine the first corresponding relation between the rotation speed adjustment amount and the time based on the music file. That is, the user can customize music, and the apparatus provided in this embodiment can calculate the music file imported by the user to obtain the first corresponding relationship.
The second correspondence determining module 13 specifically includes:
the first corresponding relation adjusting submodule is used for adjusting the first corresponding relation based on the speed changing capacity of the fan to obtain an adjusted first corresponding relation;
and the second corresponding relation determining submodule is used for determining a second corresponding relation between the rotating speed of the fan and time based on the rotating speed adjusting basic value and the adjusted first corresponding relation.
In a second embodiment, the first correspondence obtaining module 12 may be configured to obtain a sine function with the rotation speed adjustment value as a function value and with the time as an argument value.
In a third embodiment, the first correspondence obtaining module 12 may be configured to obtain a square wave function with a rotation speed adjustment amount as a function value and time as an argument value.
Further, in one embodiment, the fan speed control module 14 is specifically configured to: and outputting a pulse width adjusting signal based on the second corresponding relation, and controlling the rotating speed of the fan based on the pulse width adjusting signal.
In two embodiments, the fan speed control module 14 is specifically configured to: and determining a fan power supply voltage based on the second corresponding relation so as to control the rotating speed of the fan.
It can be understood that the PWM signal is commonly used for adjusting the duty ratio of the fan, and for the fan that does not support the PWM control method, the ADC circuit on the motherboard can also convert the PWM signal change into the change of the fan supply voltage, and perform similar type modulation on the fan driving voltage, and finally realize the fluctuation modulation of the fan rotation speed.
Referring to fig. 5, an embodiment of the present application discloses an electronic device 20, which includes a processor 21 and a memory 22; wherein, the memory 22 is used for saving computer programs; the processor 21 is configured to execute the computer program to implement the following steps:
determining a rotation speed regulation basic value of the fan; acquiring a first corresponding relation between the rotating speed regulating quantity and time; the rotational speed adjustment amount fluctuates with time; determining a second corresponding relation between the fan rotating speed and time based on the rotating speed adjusting basic value and the first corresponding relation; wherein, the rotating speed of the fan is the sum of the rotating speed regulating basic value and the rotating speed regulating quantity; and controlling the rotating speed of the fan based on the second corresponding relation.
Therefore, the method and the device for controlling the fan speed are used for determining the basic value of the fan speed regulation, obtaining the first corresponding relation between the speed regulation quantity and time, wherein the speed regulation quantity fluctuates along with the time, and then determining the second corresponding relation between the fan speed and the time based on the basic value of the speed regulation and the first corresponding relation; and finally, controlling the rotating speed of the fan based on the second corresponding relation. That is, the embodiment of the present application determines a first corresponding relationship between an obtained rotation speed adjustment amount and time, where the rotation speed adjustment amount fluctuates with time, and determines a second corresponding relationship between a fan rotation speed and time based on a rotation speed adjustment basic value and the first corresponding relationship, where the rotation speed adjustment amount fluctuates with time in the first corresponding relationship, and the fan rotation speed is the sum of the rotation speed adjustment basic value and the rotation speed adjustment amount in the second corresponding relationship, and the rotation speed of the fan is controlled based on the second corresponding relationship, and the rotation speed of the fan also fluctuates with time, so that, since the fan rotation speed is no longer fixed at a certain specific rotation speed under a certain working condition, but fluctuates with time, a frequency spreading effect can be exerted on fan noise, and sensory evaluation of noise by a user is weakened, thereby improving user experience.
In this embodiment, when the processor 21 executes the computer subprogram stored in the memory 22, the following steps may be specifically implemented: determining ventilation quantity according to the heat dissipation requirement of the equipment; determining a target rotation speed of the fan based on the ventilation amount and a characteristic parameter of the fan; a speed adjustment base value of the fan is determined based on the target speed.
In this embodiment, when the processor 21 executes the computer subprogram stored in the memory 22, the following steps may be specifically implemented: acquiring an adjusting value corresponding to the rotating speed adjusting basic value; and adjusting the target rotating speed based on the adjusting value to obtain a rotating speed adjusting basic value of the fan.
In this embodiment, when the processor 21 executes the computer subprogram stored in the memory 22, the following steps may be specifically implemented: a first correspondence of a rotational speed adjustment amount determined based on a music file with time is obtained.
In this embodiment, when the processor 21 executes the computer subprogram stored in the memory 22, the following steps may be specifically implemented: determining a pitch sequence corresponding to a music file and a duration corresponding to each pitch in the pitch sequence; determining the rotating speed regulating quantity corresponding to each pitch in the pitch sequence by utilizing a preset proportionality coefficient; and determining a first corresponding relation between the rotating speed adjustment amount and time based on the rotating speed adjustment amount corresponding to each pitch and the time length.
In this embodiment, when the processor 21 executes the computer subprogram stored in the memory 22, the following steps may be specifically implemented: acquiring a first corresponding relation corresponding to the fan from a preset library; the preset library comprises corresponding relations between rotating speed regulating quantities and time which are determined respectively based on a plurality of music files.
In this embodiment, when the processor 21 executes the computer subprogram stored in the memory 22, the following steps may be specifically implemented: the method comprises the steps of acquiring a music file input by a user, and determining a first corresponding relation between the rotating speed regulating quantity and time based on the music file.
In this embodiment, when the processor 21 executes the computer subprogram stored in the memory 22, the following steps may be specifically implemented: adjusting the first corresponding relation based on the speed change capability of the fan to obtain an adjusted first corresponding relation; and determining a second corresponding relation between the fan rotating speed and time based on the rotating speed adjusting basic value and the adjusted first corresponding relation.
In this embodiment, when the processor 21 executes the computer subprogram stored in the memory 22, the following steps may be specifically implemented: and acquiring a sine function which takes the rotating speed regulating quantity as a function value and takes time as an independent variable value.
In this embodiment, when the processor 21 executes the computer subprogram stored in the memory 22, the following steps may be specifically implemented: and acquiring a square wave function which takes the rotating speed regulating quantity as a function value and takes time as an independent variable value.
In this embodiment, when the processor 21 executes the computer subprogram stored in the memory 22, the following steps may be specifically implemented: and outputting a pulse width adjusting signal based on the second corresponding relation, and controlling the rotating speed of the fan based on the pulse width adjusting signal.
In this embodiment, when the processor 21 executes the computer subprogram stored in the memory 22, the following steps may be specifically implemented: and determining a fan power supply voltage based on the second corresponding relation so as to control the rotating speed of the fan.
The memory 22 is used as a carrier for resource storage, and may be a read-only memory, a random access memory, a magnetic disk or an optical disk, and the storage mode may be a transient storage mode or a permanent storage mode.
In addition, the electronic device 20 further includes a power supply 23, a communication interface 24, an input-output interface 25, and a communication bus 26; the power supply 23 is configured to provide an operating voltage for each hardware device on the electronic device 20; the communication interface 24 can create a data transmission channel between the electronic device 20 and an external device, and a communication protocol followed by the communication interface is any communication protocol applicable to the technical solution of the present application, and is not specifically limited herein; the input/output interface 25 is configured to acquire external input data or output data to the outside, and a specific interface type thereof may be selected according to specific application requirements, which is not specifically limited herein.
Further, an embodiment of the present application discloses a computer readable storage medium for storing a computer program, wherein the computer program, when executed by a processor, implements the following steps:
determining a rotation speed regulation basic value of the fan; acquiring a first corresponding relation between the rotating speed regulating quantity and time; the rotational speed adjustment amount fluctuates with time; determining a second corresponding relation between the fan rotating speed and time based on the rotating speed adjusting basic value and the first corresponding relation; wherein, the rotating speed of the fan is the sum of the rotating speed regulating basic value and the rotating speed regulating quantity; and controlling the rotating speed of the fan based on the second corresponding relation.
Therefore, the method and the device for determining the fan speed adjustment basic value determine the fan speed adjustment basic value, acquire the first corresponding relation between the fan speed adjustment amount and time, wherein the fan speed adjustment amount fluctuates along with the time, and then determine the second corresponding relation between the fan speed and the time based on the fan speed adjustment basic value and the first corresponding relation; and finally, controlling the rotating speed of the fan based on the second corresponding relation. That is, the embodiment of the present application determines a first corresponding relationship between an obtained rotation speed adjustment amount and time, where the rotation speed adjustment amount fluctuates with time, and determines a second corresponding relationship between a fan rotation speed and time based on a rotation speed adjustment basic value and the first corresponding relationship, where the rotation speed adjustment amount fluctuates with time in the first corresponding relationship, and the fan rotation speed is the sum of the rotation speed adjustment basic value and the rotation speed adjustment amount in the second corresponding relationship, and the rotation speed of the fan is controlled based on the second corresponding relationship, and the rotation speed of the fan also fluctuates with time, so that, since the fan rotation speed is no longer fixed at a certain specific rotation speed under a certain working condition, but fluctuates with time, a frequency spreading effect can be exerted on fan noise, and sensory evaluation of noise by a user is weakened, thereby improving user experience.
In this embodiment, when the computer subprogram stored in the computer-readable storage medium is executed by the processor, the following steps may be specifically implemented: determining ventilation quantity according to the heat dissipation requirement of the equipment; determining a target rotation speed of the fan based on the ventilation amount and a characteristic parameter of the fan; a speed adjustment base value of the fan is determined based on the target speed.
In this embodiment, when the computer subprogram stored in the computer-readable storage medium is executed by the processor, the following steps may be specifically implemented: acquiring an adjusting value corresponding to the rotating speed adjusting basic value; and adjusting the target rotating speed based on the adjusting value to obtain a rotating speed adjusting basic value of the fan.
In this embodiment, when the computer subprogram stored in the computer-readable storage medium is executed by the processor, the following steps may be specifically implemented: a first correspondence of a rotational speed adjustment amount determined based on a music file with time is obtained.
In this embodiment, when the computer subprogram stored in the computer-readable storage medium is executed by the processor, the following steps may be specifically implemented: determining a pitch sequence corresponding to a music file and a duration corresponding to each pitch in the pitch sequence; determining the rotating speed regulating quantity corresponding to each pitch in the pitch sequence by utilizing a preset proportionality coefficient; and determining a first corresponding relation between the rotating speed adjustment amount and time based on the rotating speed adjustment amount corresponding to each pitch and the time length.
In this embodiment, when the computer subprogram stored in the computer-readable storage medium is executed by the processor, the following steps may be specifically implemented: acquiring a first corresponding relation corresponding to the fan from a preset library; the preset library comprises corresponding relations between rotating speed regulating quantities and time which are determined based on a plurality of music files respectively.
In this embodiment, when the processor executes the computer subprogram stored in the computer readable storage medium, the following steps may be specifically implemented: the method comprises the steps of obtaining a music file input by a user, and determining a first corresponding relation between a rotating speed regulating quantity and time based on the music file.
In this embodiment, when the computer subprogram stored in the computer-readable storage medium is executed by the processor, the following steps may be specifically implemented: adjusting the first corresponding relation based on the speed changing capacity of the fan to obtain an adjusted first corresponding relation; and determining a second corresponding relation between the fan rotating speed and time based on the rotating speed adjusting basic value and the adjusted first corresponding relation.
In this embodiment, when the computer subprogram stored in the computer-readable storage medium is executed by the processor, the following steps may be specifically implemented: and acquiring a sine function which takes the rotating speed regulating quantity as a function value and takes time as an independent variable value.
In this embodiment, when the computer subprogram stored in the computer-readable storage medium is executed by the processor, the following steps may be specifically implemented: and acquiring a square wave function which takes the rotating speed regulating quantity as a function value and takes time as an independent variable value.
In this embodiment, when the processor executes the computer subprogram stored in the computer readable storage medium, the following steps may be specifically implemented: and outputting a pulse width adjusting signal based on the second corresponding relation, and controlling the rotating speed of the fan based on the pulse width adjusting signal.
In this embodiment, when the processor executes the computer subprogram stored in the computer readable storage medium, the following steps may be specifically implemented: and determining a fan power supply voltage based on the second corresponding relation so as to control the rotating speed of the fan.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed in the embodiment corresponds to the method disclosed in the embodiment, so that the description is simple, and the relevant points can be referred to the description of the method part.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above detailed description is provided for the method, apparatus, device and medium for controlling the rotational speed of a fan, and specific examples are applied herein to explain the principle and the implementation of the present application, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (11)
1. A method of controlling a rotational speed of a fan, comprising:
determining a rotation speed regulation basic value of the fan;
acquiring a first corresponding relation between the rotating speed regulating quantity and time; the rotational speed adjustment amount fluctuates with time;
determining a second corresponding relation of the fan rotating speed and time based on the rotating speed adjusting basic value and the first corresponding relation; wherein, the rotating speed of the fan is the sum of the rotating speed regulating basic value and the rotating speed regulating quantity;
controlling the rotating speed of the fan based on the second corresponding relation;
wherein, the obtaining of the first corresponding relation between the rotating speed regulating quantity and the time comprises: acquiring a first corresponding relation between the rotating speed regulating quantity determined based on the music file and time;
and, the process of the first corresponding relationship of the rotation speed adjustment amount determined based on the music file and the time includes:
determining a pitch sequence corresponding to a music file and a duration corresponding to each pitch in the pitch sequence;
determining the rotating speed regulating quantity corresponding to each pitch in the pitch sequence by utilizing a preset proportionality coefficient;
determining a first corresponding relation between the rotating speed adjustment amount and time based on the rotating speed adjustment amount and the time length corresponding to each pitch;
the method for determining the rotating speed adjustment amount corresponding to each pitch in the pitch sequence by using the preset proportionality coefficient comprises the following steps:
and converting each pitch in the pitch sequence to a preset range, and multiplying each pitch converted to the preset range by a preset proportionality coefficient to obtain a rotating speed regulating variable corresponding to each pitch.
2. The fan speed control method of claim 1 wherein the determining a fan speed adjustment base value comprises:
determining ventilation quantity according to the heat dissipation requirement of the equipment;
determining a target rotation speed of the fan based on the ventilation amount and a characteristic parameter of the fan;
a speed adjustment base value of the fan is determined based on the target speed.
3. The fan speed control method according to claim 2, wherein the determining a speed adjustment base value of the fan based on the target speed includes:
acquiring an adjusting value corresponding to the rotating speed adjusting basic value;
and adjusting the target rotating speed based on the adjusting value to obtain a rotating speed adjusting basic value of the fan.
4. The fan speed control method according to claim 1, wherein the obtaining a first correspondence of the speed adjustment amount determined based on the music file to time includes:
acquiring a first corresponding relation corresponding to the fan from a preset library; the preset library comprises corresponding relations between rotating speed regulating quantities and time which are determined based on a plurality of music files respectively.
5. The fan speed control method according to claim 1, wherein the obtaining a first correspondence of the speed adjustment amount determined based on the music file to time includes:
the method comprises the steps of obtaining a music file input by a user, and determining a first corresponding relation between a rotating speed regulating quantity and time based on the music file.
6. A fan speed control method as claimed in claim 1, wherein the determining a second correspondence of fan speed to time based on the speed adjustment base value and the first correspondence comprises:
adjusting the first corresponding relation based on the speed change capability of the fan to obtain an adjusted first corresponding relation;
and determining a second corresponding relation between the fan rotating speed and time based on the rotating speed adjusting basic value and the adjusted first corresponding relation.
7. The fan rotational speed control method according to any one of claims 1 to 6, wherein the controlling the rotational speed of the fan based on the second correspondence relationship includes:
and outputting a pulse width adjusting signal based on the second corresponding relation, and controlling the rotating speed of the fan based on the pulse width adjusting signal.
8. The fan rotational speed control method according to any one of claims 1 to 6, wherein the controlling the rotational speed of the fan based on the second correspondence relationship includes:
and determining a fan power supply voltage based on the second corresponding relation so as to control the rotating speed of the fan.
9. A fan speed control apparatus, comprising:
the rotating speed regulation basic value determining module is used for determining a rotating speed regulation basic value of the fan;
the first corresponding relation acquisition module is used for acquiring a first corresponding relation between the rotating speed regulating quantity and time; the rotational speed adjustment amount fluctuates with time;
the second corresponding relation determining module is used for determining a second corresponding relation between the fan rotating speed and time based on the rotating speed adjusting basic value and the first corresponding relation; wherein, the rotating speed of the fan is the sum of the rotating speed regulating basic value and the rotating speed regulating quantity;
a fan rotation speed control module for controlling the rotation speed of the fan based on the second corresponding relation;
the first corresponding relation obtaining module is specifically used for obtaining a first corresponding relation between the rotating speed regulating quantity determined based on the music file and time;
the process of the first corresponding relation between the rotating speed regulating quantity and the time determined based on the music file comprises the following steps:
determining a pitch sequence corresponding to a music file and a duration corresponding to each pitch in the pitch sequence;
determining the rotating speed regulating quantity corresponding to each pitch in the pitch sequence by utilizing a preset proportionality coefficient;
determining a first corresponding relation between the rotating speed adjustment amount and time based on the rotating speed adjustment amount and the time length corresponding to each pitch;
the method for determining the rotating speed adjustment amount corresponding to each pitch in the pitch sequence by using the preset proportionality coefficient comprises the following steps:
and converting each pitch in the pitch sequence to a preset range, and multiplying each pitch converted to the preset range by a preset proportionality coefficient to obtain a rotating speed regulating variable corresponding to each pitch.
10. An electronic device comprising a memory and a processor, wherein:
the memory is used for storing a computer program;
the processor is configured to execute the computer program to implement the fan speed control method according to any one of claims 1 to 8.
11. A computer-readable storage medium storing a computer program, wherein the computer program when executed by a processor implements the fan speed control method according to any one of claims 1 to 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211479200.0A CN115523177B (en) | 2022-11-24 | 2022-11-24 | Fan rotating speed control method, device, equipment and medium |
| PCT/CN2023/115983 WO2024109237A1 (en) | 2022-11-24 | 2023-08-30 | Fan rotation speed control method and apparatus, and device and non-volatile readable storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211479200.0A CN115523177B (en) | 2022-11-24 | 2022-11-24 | Fan rotating speed control method, device, equipment and medium |
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| CN115523177A CN115523177A (en) | 2022-12-27 |
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| JP2009265288A (en) * | 2008-04-24 | 2009-11-12 | Oki Data Corp | Image forming apparatus |
| CN102192164A (en) * | 2010-03-08 | 2011-09-21 | 艾美特电器（深圳）有限公司 | Music electric fan and control method thereof |
| CN205864299U (en) * | 2016-08-02 | 2017-01-04 | 晋锋科技股份有限公司 | Rotating speed aligning gear in the radiator fan motor of electronic installation |
| CN110425173A (en) * | 2019-06-26 | 2019-11-08 | 重庆大学 | The comfortable wind of the dynamic of fan regulates and controls method and device under sleep state based on heart rate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI591468B (en) * | 2011-03-30 | 2017-07-11 | 仁寶電腦工業股份有限公司 | Electronic device and fan control method |
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- 2023-08-30 WO PCT/CN2023/115983 patent/WO2024109237A1/en unknown
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009265288A (en) * | 2008-04-24 | 2009-11-12 | Oki Data Corp | Image forming apparatus |
| CN102192164A (en) * | 2010-03-08 | 2011-09-21 | 艾美特电器（深圳）有限公司 | Music electric fan and control method thereof |
| CN205864299U (en) * | 2016-08-02 | 2017-01-04 | 晋锋科技股份有限公司 | Rotating speed aligning gear in the radiator fan motor of electronic installation |
| CN110425173A (en) * | 2019-06-26 | 2019-11-08 | 重庆大学 | The comfortable wind of the dynamic of fan regulates and controls method and device under sleep state based on heart rate |
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| WO2024109237A1 (en) | 2024-05-30 |
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