CN115704399A

CN115704399A - Method, device and equipment for regulating and controlling cooling fan and storage medium

Info

Publication number: CN115704399A
Application number: CN202110892325.5A
Authority: CN
Inventors: 符松
Original assignee: Chengdu Jimi Technology Co Ltd
Current assignee: Chengdu Jimi Technology Co Ltd
Priority date: 2021-08-04
Filing date: 2021-08-04
Publication date: 2023-02-17

Abstract

The application discloses a method, a device, equipment and a storage medium for regulating and controlling a cooling fan. The method comprises the following steps: acquiring the current temperature and a fan noise function of equipment, wherein the independent variable of the fan noise function is temperature, and the dependent variable is fan noise; determining a fan noise value of a fan in the equipment according to the current temperature and the fan noise function; acquiring an environmental noise value corresponding to the equipment; acquiring an environment detection parameter associated with the equipment, and determining a noise detection duration based on the environment detection parameter; if the fan noise values are smaller than the environmental noise value within the noise detection duration, taking the environmental noise value as a current expected noise value of the fan; and determining an expected rotating speed corresponding to the current expected noise value, and increasing the rotating speed of the fan to the expected rotating speed. The rotating speed of the fan can be flexibly adjusted according to the environmental noise, so that the heat dissipation of the equipment is accelerated while the user experience is met.

Description

Method, device and equipment for regulating and controlling cooling fan and storage medium

Technical Field

The invention relates to the field of electric appliance application, in particular to a method, a device, equipment and a storage medium for regulating and controlling a cooling fan.

Background

At present, many household appliances are equipped with a cooling fan, such as projection equipment, and projector equipment can produce a large amount of heat because circuits such as ray apparatus, main chip, power supply system during operation, lead to complete machine equipment temperature higher, consequently can be furnished with the fan as heat radiation equipment, and the high-speed rotation of fan blade can produce the noise with the contact of air, and the fan rotational speed is higher, and the heat-sinking capability is stronger, but the noise that produces is also bigger. In the prior art, a sound-producing silencer is arranged, and the silencer produces sound opposite to the fan noise, so that the noise reduction effect is realized, but the design complexity and the system cost are increased in such a way. In order to overcome the problems, in the prior art, the acquired environmental noise value is compared with a preset noise threshold value, and the rotating speed of the fan is adjusted according to the comparison result, so that the noise of the fan is always smaller than the noise threshold value, but the mode cannot be matched with the actual use condition, the rotating speed of the fan is not adjusted flexibly, and the heat dissipation capacity of the heat dissipation fan is reduced.

Disclosure of Invention

In view of this, an object of the present invention is to provide a method, an apparatus, a device, and a medium for adjusting and controlling a cooling fan, which can accelerate heat dissipation of the device and improve heat dissipation capability of the cooling fan while reducing noise influence of the fan according to an environmental condition. The specific scheme is as follows:

in a first aspect, the present application discloses a method for regulating a cooling fan, comprising:

acquiring the current temperature and a fan noise function of equipment, wherein the independent variable of the fan noise function is temperature, and the dependent variable is fan noise;

determining a fan noise value of a fan in the equipment according to the current temperature and the fan noise function;

acquiring an environmental noise value corresponding to the equipment;

obtaining an environment detection parameter associated with the device, and determining a noise detection duration based on the environment detection parameter;

if the fan noise values are smaller than the environmental noise value within the noise detection duration, taking the environmental noise value as a current expected noise value of the fan;

and determining an expected rotating speed corresponding to the current expected noise value, and increasing the rotating speed of the fan to the expected rotating speed.

Optionally, the obtaining a current temperature and fan noise function of the device includes:

determining a heat dissipation strategy of the fan in the equipment; the heat dissipation strategy comprises a first heat dissipation strategy taking the temperature of the machine body as an index and a second heat dissipation strategy taking the ambient temperature as an index;

if the heat dissipation strategy is the first heat dissipation strategy, acquiring the body temperature of the equipment and a first fan noise function corresponding to the first heat dissipation strategy, wherein the independent variable of the first fan noise function is the body temperature of the equipment, and the dependent variable is fan noise;

if the heat dissipation strategy is the second heat dissipation strategy, obtaining the body temperature of the equipment, the ambient temperature corresponding to the equipment and a second fan noise function corresponding to the second heat dissipation strategy, wherein the independent variable of the second fan noise function is the ambient temperature, and the dependent variable is the fan noise.

Optionally, the process of constructing the first fan noise function includes:

determining the lowest rotating speeds of the first fans corresponding to the equipment at different body temperatures according to the first heat dissipation strategy, and fitting by using a target function to obtain a first temperature rotating speed function; the first minimum fan speed is the minimum fan speed at which the equipment is maintained within a safe temperature at the fuselage temperature;

constructing a rotating speed noise function according to the rotating speed of the fan and the corresponding noise data of the fan, which are acquired under the condition of no environmental noise;

and compounding the first temperature rotating speed function and the rotating speed noise function to obtain a first compound function, and taking the first compound function as the first fan noise function.

Optionally, the process of constructing the second fan noise function includes:

determining the lowest rotation speed of a second fan corresponding to the equipment at different environmental temperatures according to the second heat dissipation strategy, and constructing a second temperature rotation speed function by combining the difference value of the temperature of the machine body and the safe temperature; the second minimum fan speed is the minimum speed of the fan at the ambient temperature to maintain the equipment within a safe temperature;

and compounding the rotation speed function and the rotation speed noise function based on the second temperature to obtain a second compound function, and taking the second compound function as the second fan noise function.

Optionally, after increasing the rotation speed of the fan to the desired rotation speed, the method further includes:

if the fan noise value corresponding to the fan is larger than the newly acquired environmental noise value after the rotating speed is increased, determining a target fan noise value corresponding to the current temperature according to the current temperature and the fan noise function, determining a target rotating speed corresponding to the target fan noise value, and adjusting the rotating speed of the fan to the target rotating speed.

Optionally, before adjusting the rotation speed of the fan to the target rotation speed, the method further includes:

if the target fan noise value is smaller than the newly acquired environmental noise value, triggering and executing the step of adjusting the rotating speed of the fan to the target rotating speed;

if the target fan noise value is larger than the newly acquired environmental noise value, acquiring current environmental information, and adjusting the system display of the equipment to a brightness self-adaptive mode when the current environmental information meets the target environmental conditions; the target environmental conditions include decibel conditions, illuminance conditions, and time conditions.

Optionally, the increasing the rotation speed of the fan to the desired rotation speed includes:

according to the adjusting grade of the fan, the rotating speed of the fan is adjusted step by step according to a preset time interval until the rotating speed of the fan is increased to the expected rotating speed;

wherein the adjustment level of the fan is determined according to the accuracy of the pulse width modulation duty cycle corresponding to the fan.

Optionally, the obtaining an environment detection parameter associated with the device, and determining a noise detection duration based on the environment detection parameter includes:

acquiring environment detection parameters associated with the equipment, and determining an initial detection time length corresponding to each environment detection parameter based on a detection time length determination rule corresponding to each environment detection parameter;

and determining the noise detection time length in an average calculation or weighted average calculation mode based on all the initial detection time lengths.

Optionally, the environment detection parameter includes any one or more of a current time, an environment image, an environment illuminance, and a system volume output state of the device;

the detection duration determination rule corresponding to the current time is a rule constructed based on different detection durations corresponding to different time periods; the time periods comprise a day time period and a night time period;

the detection duration determination rule corresponding to the environment image is a rule constructed based on different environment image types and corresponding to different detection durations; the types of the environment images comprise a noisy environment type and a quiet environment type;

the detection time length determination rule corresponding to the ambient illuminance is a rule constructed based on different detection time lengths corresponding to different illuminances;

the detection duration determination rule corresponding to the system volume output state is a rule established based on different volume output states corresponding to different detection durations.

In a second aspect, the present application discloses a cooling fan control device, comprising:

the system comprises an acquisition module, a control module and a control module, wherein the acquisition module is used for acquiring the current temperature and a fan noise function of equipment, the independent variable of the fan noise function is temperature, and the dependent variable of the fan noise function is fan noise;

the fan noise value determining module is used for determining a fan noise value of a fan in the equipment according to the current temperature and the fan noise function;

the environmental noise value acquisition module is used for acquiring an environmental noise value corresponding to the equipment;

the noise detection duration determining module is used for acquiring environment detection parameters related to the equipment and determining the noise detection duration based on the environment detection parameters;

a current expected noise value determining module, configured to, if the fan noise value is less than the environmental noise value within the noise detection duration, take the environmental noise value as a current expected noise value of the fan;

and the fan rotating speed increasing module is used for determining the expected rotating speed corresponding to the current expected noise value and increasing the rotating speed of the fan to the expected rotating speed.

In a third aspect, the present application discloses an electronic device, comprising:

a memory for storing a computer program;

and the processor is used for executing the computer program to realize the cooling fan regulation and control method.

In a fourth aspect, the present application discloses a computer readable storage medium for storing a computer program; wherein the computer program is executed by the processor to implement the method for adjusting and controlling the cooling fan.

The method comprises the steps of obtaining the current temperature of equipment and a fan noise function, wherein the independent variable of the fan noise function is the temperature, and the dependent variable of the fan noise function is the fan noise; determining a fan noise value of a fan in the equipment according to the current temperature and the fan noise function; acquiring an environmental noise value corresponding to the equipment; acquiring an environment detection parameter associated with the equipment, and determining a noise detection duration based on the environment detection parameter; if the fan noise values are smaller than the environmental noise value within the noise detection duration, taking the environmental noise value as a current expected noise value of the fan; and determining an expected rotating speed corresponding to the current expected noise value, and increasing the rotating speed of the fan to the expected rotating speed. It can be seen that, through the fan noise function, the fan noise value of the fan is determined according to the current temperature, and the appropriate noise detection duration is determined according to the environment detection parameters, then under the condition that the fan noise values are all smaller than the environment noise value in the noise detection duration, the environment noise value is taken as the current expected noise value of the fan, then the rotating speed of the fan is increased according to the current expected noise value, therefore, the rotating speed of the fan can be flexibly adjusted according to the environment noise, so that the influence of the fan noise on a user is reduced, the heat dissipation of equipment is accelerated, the heat dissipation capability of the heat dissipation fan is improved, whether the rotating speed adjustment is started or not is controlled according to the noise detection duration determined by the environment detection parameters, the error triggering rotating speed adjustment caused by the short-time strong noise generated suddenly can be avoided, and the accuracy of the rotating speed adjustment triggering is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a flowchart of a method for regulating a cooling fan according to the present disclosure;

fig. 2 is a flowchart of a specific method for adjusting and controlling a cooling fan according to the present disclosure;

fig. 3 is a flowchart of another specific method for adjusting and controlling a cooling fan provided in the present application;

fig. 4 is a schematic structural diagram of a cooling fan adjustment and control device provided in the present application;

fig. 5 is a block diagram of an electronic device provided in the present application.

Detailed Description

In the prior art, the acquired environmental noise value is compared with the preset noise threshold value, and the rotating speed of the fan is adjusted according to the comparison result, so that the noise of the fan is always smaller than the noise threshold value, but the mode cannot be attached to the actual use condition, the adjustment of the rotating speed of the fan lacks flexibility, and the heat dissipation capacity of the heat dissipation fan is reduced. In order to overcome the technical problem, the application provides a method for regulating and controlling a cooling fan, which can accelerate the heat dissipation of equipment and improve the heat dissipation capability of the cooling fan under the condition of reducing the influence of fan noise according to environmental conditions.

The embodiment of the application discloses a method for regulating and controlling a cooling fan, and as shown in fig. 1, the method can comprise the following steps:

step S11: the method comprises the steps of obtaining the current temperature of equipment and a fan noise function, wherein an independent variable of the fan noise function is the temperature, and a dependent variable of the fan noise function is the fan noise.

In this embodiment, a current temperature of the device and a fan noise function are first obtained, where the fan noise function is a function constructed with the temperature as an independent variable and the fan noise as a dependent variable. It can be understood that the fans with different temperatures need to be cooled by different rotating speeds to keep the equipment within the safe temperature, so that a corresponding relationship exists between the temperature and the rotating speed of the fans, and a set of corresponding relationship also exists between the rotating speed of the fans and the noise value of the fans, so that the noise value of the corresponding fans can be determined according to the current temperature by using the pre-constructed noise function of the fans in the embodiment.

In this embodiment, the acquiring the current temperature and the fan noise function of the device may include: determining a heat dissipation strategy of the fan in the equipment; the heat dissipation strategy comprises a first heat dissipation strategy taking the temperature of the machine body as an index and a second heat dissipation strategy taking the ambient temperature as an index; if the heat dissipation strategy is the first heat dissipation strategy, obtaining the body temperature of the equipment and a first fan noise function corresponding to the first heat dissipation strategy, wherein the independent variable of the first fan noise function is the body temperature of the equipment, and the dependent variable is fan noise; if the heat dissipation strategy is the second heat dissipation strategy, acquiring the body temperature of the equipment, the environment temperature corresponding to the equipment and a second fan noise function corresponding to the second heat dissipation strategy, wherein the independent variable of the second fan noise function is the environment temperature, and the dependent variable is the fan noise. It can be understood that, when the fan is used for cooling the equipment, a first heat dissipation strategy for cooling according to the temperature of the equipment body can be adopted, and a second heat dissipation strategy for cooling according to the ambient temperature and in combination with the temperature of the equipment body can also be adopted, so that the heat dissipation strategy of the fan in the equipment is firstly determined, and then the matched fan noise function is determined.

In this embodiment, the process of constructing the first fan noise function may include: determining the lowest rotating speeds of the first fans corresponding to the equipment at different body temperatures according to the first heat dissipation strategy, and fitting by using a target function to obtain a first temperature rotating speed function; the first minimum fan speed is the minimum fan speed at which the equipment is maintained within a safe temperature at the fuselage temperature; constructing a rotating speed noise function according to the rotating speed of the fan and the corresponding noise data of the fan, which are acquired under the condition of no environmental noise; and compounding the first temperature rotating speed function and the rotating speed noise function to obtain a first compound function, and taking the first compound function as the first fan noise function.

Specifically, the lowest fan speeds that can maintain the fuselage within the safe temperature can be measured at several critical temperature points, and for example, the corresponding first lowest fan speeds at several critical fuselage temperatures are shown in the following table:

t _{machine for working}	＜＝25℃	35℃	40℃	45℃	50℃	60℃	＞＝65℃
								p	72	90	110	123	135	200	255

And then fitting by using a target function to obtain a first temperature and rotating speed function. For example, the objective function may be a binary linear function, and the temperature between adjacent critical temperature points may be calculated according to a linear rule, that is, a piecewise binary linear equation is constructed according to the critical temperature points and the corresponding rotation speed, so as to obtain a functional relation p = f0 (t) of the fuselage temperature and the rotation speed, that is, a first temperature and rotation speed function, so as to determine the rotation speed according to the obtained fuselage temperature in combination with the function, for example, if the fuselage temperature t1 is between 35 ℃ and 40 ℃, then the corresponding p1=90+ ((110-90)/(40-35)) (t 1-35), and the other sections are similar.

Then, according to the collected data of the fan noise sf and the fan rotating speed p under the condition of no environmental noise, a rotating speed noise function sf = f1 (p) is obtained; specifically, if the fan level is N, noise values generated under all levels are acquired under the condition of no environmental noise, and then a function is fitted to generate a functional relationship between sf and p, so as to obtain a rotation speed noise function. Then, a first composite function is obtained by compositing the first temperature rotation speed function and the rotation speed noise function, and the first composite function is used as a first fan noise function to obtain a first fan noise function sf = f1 (f 0 (t)) of the fan noise sf and the body temperature t.

In this embodiment, the process of constructing the second fan noise function may include: determining the lowest rotation speed of a second fan corresponding to the equipment at different environmental temperatures according to the second heat dissipation strategy, and constructing a second temperature rotation speed function by combining the difference value of the temperature of the machine body and the safe temperature; the second minimum fan speed is the minimum speed of the fan at the ambient temperature to maintain the equipment within a safe temperature; constructing a rotating speed noise function according to the rotating speed of the fan and the corresponding noise data of the fan, which are acquired under the condition of no environmental noise; and compounding the rotation speed function and the rotation speed noise function based on the second temperature to obtain a second compound function, and taking the second compound function as the second fan noise function.

Specifically, in a mode of taking the ambient temperature as a main mode and the body temperature as an auxiliary mode, the lowest rotating speed of the fan, which can maintain the body within the safe temperature under several key temperature points, of the environment can be measured firstly, and exemplarily, the relationship between the ambient temperature and the lowest rotating speed of the second fan at several key points is shown in the following table:

t _{ring (C)}	＜＝0℃	10℃	20℃	25℃	30℃	35℃	＞＝40℃
								p	72	90	110	123	135	200	255

And then combining the difference value of the temperature of the airplane body and the safety temperature to construct a second temperature and rotation speed function. For example, the temperature between adjacent temperature key points may be fitted by using a binary linear function, and compensated according to the difference between the fuselage temperature and the safe temperature, to obtain a second temperature rotation speed function p = f0' (t) of the ambient temperature and the rotation speed, so as to determine the rotation speed according to the obtained ambient temperature and the fuselage temperature by using the second temperature rotation speed function, for example, when the ambient temperature t2 is between (10 ℃ and 20 ℃), and the fuselage temperature is less than 65 ℃, the corresponding p1=90+ ((110-90)/(20-10)) (t 1-10), and the same applies to other sections, and when the fuselage temperature is greater than 65 ℃, the fuselage temperature may be increased by 10 steps based on the rotation speed calculated by the above formula every time when the fuselage temperature is greater than 65 ℃, for example, when the current fuselage temperature is 68 ℃, the corresponding p1=90+ ((110-90-20-10)) (t 1-10) + (68-65), and when p1 is greater than 255, thereby implementing the adoption of different ambient temperatures and the appropriate rotation speed and safety relation between the fuselage temperatures. Similarly, a rotation speed noise function sf = f1 (p) of the rotation speed and the fan noise value is obtained, and thus a function sf = f1 (f 0' (t)) of the fan noise sf and the ambient temperature t is obtained. Then, a second composite function is obtained by compositing the second temperature rotation speed function and the rotation speed noise function, and the second composite function is used as a second fan noise function to obtain a second fan noise function sf = f1 (f 0' (t)) of the fan noise sf and the body temperature t.

Step S12: and determining a fan noise value of a fan in the equipment according to the current temperature and the fan noise function.

In this embodiment, after the current temperature and the fan noise function are obtained, the fan noise value of the fan in the device is determined according to the current temperature and the fan noise function.

Step S13: and acquiring an environmental noise value corresponding to the equipment.

In this embodiment, the ambient noise value corresponding to the device may be obtained through a local sound pickup configured in the device, or the ambient noise value may be obtained through a sound pickup located outside the device and in the same environment as the device. Moreover, the distance between the local sound pickup and the fan can be larger than or equal to a preset distance threshold value; that is, if the sound pickup is inside the apparatus, in order to avoid the influence of the noise of the fan on the sound pickup, the distance between the sound pickup and the fan may be set to be greater than or equal to a preset distance threshold, or sound insulation may be performed between the fan and the sound pickup using a sound insulation device. The preset distance threshold value can be determined according to the type of the fan and the experimental test of the equipment structure.

Step S14: obtaining an environment detection parameter associated with the device, and determining a noise detection duration based on the environment detection parameter.

In this embodiment, an environment detection parameter associated with the device is obtained, and then a noise detection duration is determined based on the environment detection parameter, where the noise detection duration is used to detect whether to trigger a rotation speed adjustment operation. It can be understood that, in the actual use process, there may exist a short-time strong noise which is suddenly generated, so that the environmental noise value is larger than the fan noise value, if the fan rotation speed is immediately increased, when the short-time abnormal noise disappears, the fan rotation speed is immediately decreased, and the fan motor is damaged; therefore, the noise detection time length matched with the equipment at present is determined by obtaining the environment detection parameters related to the equipment, and whether the rotation speed adjustment is started or not is controlled according to the noise detection time length, so that the phenomenon that the short-time strong noise generated suddenly causes false triggering of the rotation speed adjustment can be avoided, and the accuracy of the rotation speed adjustment triggering is improved.

Of course, the above-mentioned noise detection duration may also be a fixed value; that is, a fixed time length of noise detection can be preset as a preset detection time length, and the preset detection time length can be adjusted according to the environment corresponding to the equipment after the subsequent equipment is started, so as to obtain the final noise detection time length; specifically, the preset detection duration may be adjusted up or down according to a time period corresponding to the current time; the time periods comprise a day time period and a night time period; and/or acquiring an environment image, and adjusting the preset detection time length up or down according to the type of the environment image; the types of the environment images comprise a noisy environment type and a quiet environment type; and/or acquiring ambient illuminance, and adjusting the preset detection time up or down according to the size relation between the ambient illuminance and a preset illuminance threshold; and/or acquiring a system volume output state of the equipment, and adjusting the preset detection time length up or down according to the system volume output state.

For example, when the device is detected to be in the late night period a (23-5. For another example, if it is detected that the current environment is a noisy environment, the specific value of the preset detection time period may be reduced by a small amount, and if it is detected that the current environment is a quiet environment, the specific value of the preset detection time period may be increased by a small amount. The user can be judged to be in a relatively non-quiet environment by combining with the ambient light when the ambient light is detected to be greater than or equal to a certain threshold, the specific numerical value of the preset detection time duration is increased when the probability of the occurrence of abnormal noise is higher, the user can be judged to be in the relatively quiet environment when the ambient light is detected to be less than the certain threshold, and the specific numerical value of the preset detection time duration is decreased when the probability of the occurrence of the abnormal noise is lower. And when the system volume of the body is increased and the audio channel has data output, the preset detection time length is correspondingly shortened by combining the system volume of the body. Alternatively, in this embodiment, the preset detection time period may be adjusted by selectively combining the above-mentioned multiple modes. The specific adjustment parameters can be set by the user, and are not limited here.

Step S15: and if the fan noise value is smaller than the environmental noise value in the noise detection duration, taking the environmental noise value as the current expected noise value of the fan.

In this embodiment, if the fan noise values are all smaller than the environmental noise value within the noise detection duration, the environmental noise value is used as the current expected noise value of the fan, that is, if the fan noise values are all smaller than the environmental noise value within the noise detection duration, the rotation speed of the fan may be increased at this time, and in order that the fan noise does not exceed the environmental noise and affect the user experience, the environmental noise value is used as the current expected noise value of the fan.

Step S16: and determining an expected rotating speed corresponding to the current expected noise value, and increasing the rotating speed of the fan to the expected rotating speed.

In this embodiment, after the current expected noise value of the fan is determined, the expected rotation speed corresponding to the current expected noise value is determined, and the rotation speed of the fan is increased to the expected rotation speed. It can be understood that, according to the current expected noise value, that is, the current environmental noise value, after the rotating speed of the fan is increased to increase the rotating speed of the fan, the fan noise value is the same as the current environmental noise value, so that the heat dissipation of the equipment can be performed as much as possible while the user experience is not influenced.

In this embodiment, increasing the rotation speed of the fan to the desired rotation speed may include: according to the adjusting grade of the fan, the rotating speed of the fan is adjusted step by step according to a preset time interval until the rotating speed of the fan is increased to the expected rotating speed; wherein the adjustment level of the fan is determined according to the accuracy of the pulse width modulation duty cycle corresponding to the fan. If the accuracy of the pwm duty cycle pwm corresponding to the fan is 1/255, N is 255, i.e. N is the minimum progress of the fan control, i.e. the fan level. At this time, if the fan speed is increased, the fan speed may be increased by 1/N every interval B until the desired speed is reached.

For example, as shown in fig. 2, if the collected ambient noise is se, and if sf < se and the duration Ts exceeds the noise detection duration Δ T, the fan speed p is gradually increased, which may be adjusted according to a rule of increasing 1 fan level per second, so that the finally adjusted fan noise value is substantially equal to the current ambient noise value. And after the strategy of increasing the rotating speed of the fan takes effect, if the temperature of the machine body is detected to be reduced to a preset temperature point, namely, the heat dissipation is not required to be accelerated, the strategy can be stopped, and the fan continues to determine the lowest rotating speed corresponding to the current temperature according to the temperature rotating speed function to perform heat dissipation. Therefore, the influence of the fact that the fan noise is larger than the environmental noise on the user use experience can be avoided, under the condition that the heat dissipation requirement of the whole machine is guaranteed, the heat dissipation is accelerated under the condition that the environmental noise is large, the fan noise is reduced under the condition that noise reduction equipment is not increased, the temperature of the whole machine is reduced under the high-noise environment, the fan noise of a user is reduced as much as possible under the low-environmental-noise use condition, and the product use experience is improved.

In this embodiment, after increasing the rotation speed of the fan to the desired rotation speed, the method may further include: if the fan noise value corresponding to the fan is larger than the newly acquired environmental noise value after the rotating speed is increased, determining a target fan noise value corresponding to the current temperature according to the current temperature and the fan noise function, determining a target rotating speed corresponding to the target fan noise value, and adjusting the rotating speed of the fan to the target rotating speed.

In this embodiment, if the fan noise value corresponding to the final fan after the rotation speed is increased is greater than the newly acquired environmental noise value, the fan noise function is used to determine a target fan noise value corresponding to the current temperature, determine a target rotation speed corresponding to the target fan noise value, and then adjust the rotation speed of the fan to the target rotation speed. I.e., stop to expedite heat dissipation, only maintaining the basic heat dissipation requirements needed by the device.

In this embodiment, before adjusting the rotation speed of the fan to the target rotation speed, the method may further include: if the target fan noise value is smaller than the newly acquired environmental noise value, triggering and executing the step of adjusting the rotating speed of the fan to the target rotating speed; if the target fan noise value is larger than the newly acquired environmental noise value, acquiring current environmental information, and adjusting the system display of the equipment to a brightness self-adaptive mode when the current environmental information meets the target environmental conditions; the target environmental conditions include decibel conditions, illuminance conditions, and time conditions.

In this embodiment, if the target fan noise value is smaller than the newly acquired environmental noise value, the step of adjusting the rotation speed of the fan to the target rotation speed is triggered and executed; and if the noise value of the target fan is larger than the newly acquired environmental noise value, acquiring current environmental information, and adjusting the system display of the equipment to a brightness self-adaptive mode when the current environmental information meets a target environmental condition, wherein the target environmental condition comprises a decibel condition, a illuminance condition and a time condition. That is, if the fan noise values corresponding to the basic heat dissipation requirements required by the device are higher than the environmental noise values, the device itself starts with the reduction of the display brightness of the device system and the reduction of the heat dissipation of the device. For example, the target fan noise value is greater than the newly acquired environmental noise value, and then according to the environmental noise, the environmental light, and the time period, the three satisfy the setting values at the same time, for example, the environmental noise: 30 decibels; ambient light: 80LUX; time period: 23:00 to 06:00, judging that the current user environment is in a night quiet dark environment, switching the system mode into a brightness self-adaptive mode, wherein in the mode, the environment light is divided into 30 equal parts, each equal part of the environment light corresponds to the brightness of the optical machine, and the brighter the environment light is, the brighter the optical machine brightness is, so that the purpose of automatically adjusting the brightness of the light source according to the environment brightness is achieved, and the temperature of the whole machine is reduced in the dark environment to reduce wind noise. If the current environment information does not meet the target environment condition, namely the fan noise value corresponding to the basic heat dissipation requirement required by the equipment is higher than the environment noise value, and the brightness of the system is automatically judged to be unsuitable to be adjusted according to the current environment, the step of determining the target rotating speed corresponding to the target fan noise value and adjusting the rotating speed of the fan to the target rotating speed can be selected to be executed, so that the normal working temperature of the equipment is ensured; in addition, before the target rotating speed corresponding to the target fan noise value is selected to be determined and adjusted to the target rotating speed, a system brightness adjustment request is sent to a user to inquire whether the user can accept the system brightness adjustment, if the user accepts the system brightness adjustment, the system brightness of the equipment is reduced, and if the user does not accept the system brightness adjustment, the step of determining the target rotating speed corresponding to the target fan noise value and adjusting the rotating speed of the fan to the target rotating speed is performed.

As can be seen from the above, in this embodiment, by acquiring the current temperature of the device and the fan noise function, the independent variable of the fan noise function is the temperature, and the dependent variable is the fan noise; determining a fan noise value of a fan in the equipment according to the current temperature and the fan noise function; acquiring an environmental noise value corresponding to the equipment; obtaining an environment detection parameter associated with the device, and determining a noise detection duration based on the environment detection parameter; if the fan noise values are smaller than the environmental noise value within the noise detection duration, taking the environmental noise value as a current expected noise value of the fan; and determining an expected rotating speed corresponding to the current expected noise value, and increasing the rotating speed of the fan to the expected rotating speed. It can be seen that, through a fan noise function, a fan noise value of a fan is determined according to a current temperature, a proper noise detection time length is determined according to an environment detection parameter, then under the condition that the fan noise values are all smaller than the environment noise value in the noise detection time length, the environment noise value is used as a current expected noise value of the fan, the rotating speed of the fan is increased according to the current expected noise value, therefore, the rotating speed of the fan can be flexibly adjusted according to the environment noise, the influence of the fan noise on a user is reduced, the heat dissipation of equipment is accelerated, the heat dissipation capacity of the heat dissipation fan is improved, whether the rotating speed adjustment is started or not is controlled through the noise detection time length determined by the environment detection parameter, the phenomenon that the short-time strong noise generated suddenly causes false triggering of rotating speed adjustment can be avoided, and the accuracy of rotating speed adjustment triggering is improved.

The embodiment of the application discloses a specific method for regulating and controlling a cooling fan, and as shown in fig. 3, the method can comprise the following steps:

step S21: acquiring the current temperature and a fan noise function of equipment, wherein the independent variable of the fan noise function is temperature, and the dependent variable is fan noise;

step S22: determining a fan noise value of a fan in the equipment according to the current temperature and the fan noise function;

step S23: acquiring an environmental noise value corresponding to the equipment;

step S24: obtaining environment detection parameters associated with the equipment, and determining an initial detection time length corresponding to each environment detection parameter based on a detection time length determination rule corresponding to each environment detection parameter.

In this embodiment, after the environment detection parameters associated with the device are obtained, the initial detection duration corresponding to each environment detection parameter is determined based on the detection duration determination rule corresponding to each environment detection parameter. The environment detection parameters may include any one or more of a current time, an environment image, an environment illuminance, and a system volume output state of the device.

Step S25: and determining the noise detection time length in an average calculation or weighted average calculation mode based on all the initial detection time lengths.

In this embodiment, based on all the obtained initial detection durations, the noise detection duration is determined by means of average calculation or weighted average calculation.

In this embodiment, the environment detection parameters may include any one or more of a current time, an environment image, an environment illuminance, and a system volume output state of the device; the detection duration determination rule corresponding to the current time is a rule constructed based on different detection durations corresponding to different time periods; the time periods comprise a day time period and a night time period; the detection duration determination rule corresponding to the environment image is a rule constructed based on different environment image types and corresponding to different detection durations; the types of the environment images comprise a noisy environment type and a quiet environment type; the detection time length determination rule corresponding to the ambient illuminance is a rule constructed based on different detection time lengths corresponding to different illuminances; the detection duration determination rule corresponding to the system volume output state is a rule established based on different volume output states corresponding to different detection durations.

It will be appreciated that the noise types will vary under different environmental conditions, such as a higher probability of abnormal noise being present during the day, for example, the sound of a wall-boring partition; in contrast, late night is relatively quiet. Therefore, when the device is detected to be in the late-night period a (23 to 5 00), the value of the detection time period is set to be smaller, for example, the time period is set to 3s, and the specific value of the detection time period B (5.

In this embodiment, by combining the image recognition technology, if the device is detected to be in a noisy environment where people and people are present in the daytime, the specific value of the detection duration can be set to be smaller because noise is generated continuously in the noisy environment where people and people are present; if the indoor environment without people is detected, the specific numerical value of the detection duration can be set to be larger, and the influence of abnormal noise in the environment is reduced. The detection of the environment image type can be performed through a trained neural network model, specifically, image sample sets including two categories of a noisy environment and a quiet environment can be obtained firstly, and a classification network capable of accurately classifying the noisy environment and the quiet environment is obtained through training the classification network through the image sample sets, wherein the classification network can be a network structure such as VGG Net, resNet, resNeXt, SE-Net and the like. In the later use process of the equipment, an image acquisition device, such as a camera, can be used for acquiring an environment image, a classification network is called to process the environment image, the type of the current environment is identified, and if the current environment is detected to be a noisy environment, the specific numerical value of the detection duration can be set to be smaller; if the current environment is detected to be a quiet environment, the specific value of the detection duration may be set to be larger.

In this embodiment, by combining the ambient light, when the ambient light is detected to be greater than or equal to a certain threshold, it can be determined that the user is in a relatively non-quiet environment, and if the occurrence probability of abnormal noise is high, the specific value of the detection duration is set to be larger; when the detected ambient light is smaller than a certain threshold value, the user can be judged to be in a relatively quiet environment, the probability of abnormal noise is low, and the specific value of the detection duration is set to be smaller.

In this embodiment, by combining the system volume of the body itself, when it is detected that the system volume of the body itself is increased and the audio channel has data output, the detection duration is relatively short. Alternatively, in this embodiment, the noise detection time period may be determined by means of an average calculation or a weighted average calculation by selectively combining the above manners. For example, the obtained environment detection parameters include current time and an environment image, the corresponding initial detection time length is determined to be 10 seconds according to the fact that the current time belongs to a daytime period, the corresponding initial detection time length is determined to be 2 seconds according to the fact that the type of the environment image is a noisy environment type, then the final noise detection time length is obtained after weighted averaging, for example, the weight corresponding to the current time is 0.3, the weight corresponding to the environment image is 0.7, and then the final noise detection time length t = (0.3 x 10 x 0.7 x 2)/2 =2.2 seconds is obtained after weighted averaging; each initial detection duration is multiplied by the corresponding weight and then the average value is obtained, wherein the weight of each environment detection parameter can be set according to the actual using environment, for example, a mode of current time is more suitable for being adopted in a family room, and the weight corresponding to the current time is higher; and public places such as shopping malls and the like which may still be prosperous at night are suitable for adopting the mode of the type of the environment image, so the weight corresponding to the environment image in the scene is higher.

Step S26: if the fan noise values are smaller than the environmental noise value within the noise detection duration, taking the environmental noise value as a current expected noise value of the fan;

step S27: and determining an expected rotating speed corresponding to the current expected noise value, and increasing the rotating speed of the fan to the expected rotating speed.

For the specific processes of the above steps S21 to S23, S26 and S27, reference may be made to the corresponding contents disclosed in the foregoing embodiments, and details are not repeated here.

As can be seen from the above, in this embodiment, the initial detection duration corresponding to each environmental detection parameter is determined by obtaining the environmental detection parameter associated with the device and determining a rule based on the detection duration corresponding to each environmental detection parameter; then, based on all the initial detection time lengths, the noise detection time length is determined through an average calculation or weighted average calculation mode. Therefore, the noise detection time length matched with the current environment can be obtained, whether the rotating speed adjustment is started or not is controlled according to the noise detection time length, the condition that the rotating speed adjustment is triggered by mistake due to short-time strong noise generated suddenly can be avoided, and the accuracy of the rotating speed adjustment triggering is improved.

Correspondingly, the embodiment of the present application further discloses a cooling fan adjusting and controlling device, as shown in fig. 4, the device includes:

the acquiring module 11 is configured to acquire a current temperature of the device and a fan noise function, where an independent variable of the fan noise function is a temperature, and a dependent variable of the fan noise function is a fan noise;

a fan noise value determining module 12, configured to determine a fan noise value of a fan in the device according to the current temperature and the fan noise function;

an ambient noise value obtaining module 13, configured to obtain an ambient noise value corresponding to the device;

a noise detection duration determining module 14, configured to obtain an environment detection parameter associated with the device, and determine a noise detection duration based on the environment detection parameter;

a current expected noise value determining module 15, configured to, if the fan noise values are all smaller than the environmental noise value within the noise detection duration, take the environmental noise value as a current expected noise value of the fan;

and a fan speed increasing module 16, configured to determine an expected speed corresponding to the current expected noise value, and increase the speed of the fan to the expected speed.

It can be seen from the above that, in this embodiment, a fan noise value of a fan is determined according to a current temperature through a fan noise function, a proper noise detection duration is determined according to an environment detection parameter, then, under the condition that the fan noise values are all smaller than the environment noise value within the noise detection duration, the environment noise value is taken as a current expected noise value of the fan, then, the rotating speed of the fan is increased according to the current expected noise value, therefore, the rotating speed of the fan can be flexibly adjusted according to the environment noise, so that the influence of the fan noise on a user is reduced, the heat dissipation of equipment is accelerated, the heat dissipation capability of a heat dissipation fan is improved, whether the rotating speed adjustment is started or not is controlled according to the noise detection duration determined by the environment detection parameter, false triggering rotating speed adjustment caused by short-time strong noise generated suddenly can be avoided, and the accuracy of rotating speed adjustment triggering is improved.

In some specific embodiments, the obtaining module 11 may specifically include:

a heat dissipation strategy determination unit, configured to determine a heat dissipation strategy of the fan in the device; the heat dissipation strategy comprises a first heat dissipation strategy taking the temperature of the machine body as an index and a second heat dissipation strategy taking the ambient temperature as an index;

a first fan noise function obtaining unit, configured to obtain, if the heat dissipation policy is the first heat dissipation policy, a body temperature of the device and a first fan noise function corresponding to the first heat dissipation policy, where an independent variable of the first fan noise function is the body temperature of the device, and a dependent variable is fan noise;

a second fan noise function obtaining unit, configured to obtain, if the heat dissipation policy is the second heat dissipation policy, a body temperature of the device, an ambient temperature corresponding to the device, and a second fan noise function corresponding to the second heat dissipation policy, where an independent variable of the second fan noise function is the ambient temperature, and a dependent variable is fan noise.

In some embodiments, the cooling fan adjusting and controlling device may include:

and the target fan noise value determining unit is used for determining a target fan noise value corresponding to the current temperature according to the current temperature and the fan noise function if the fan noise value corresponding to the fan is larger than the newly acquired environmental noise value after the rotating speed is increased, then determining a target rotating speed corresponding to the target fan noise value, and adjusting the rotating speed of the fan to the target rotating speed.

In some specific embodiments, the target fan noise value determining unit may specifically include:

a triggering unit, configured to trigger execution of the step of adjusting the rotation speed of the fan to the target rotation speed if the target fan noise value is smaller than the newly acquired environmental noise value;

a target environment condition judging unit, configured to acquire current environment information if the target fan noise value is greater than the newly acquired environment noise value, and adjust system display of the device to a brightness adaptive mode when the current environment information meets a target environment condition; the target environmental conditions include decibel conditions, illuminance conditions, and time conditions.

In some embodiments, the fan speed increasing module may specifically include:

the fan rotating speed step-by-step adjusting unit is used for adjusting the rotating speed of the fan step by step according to the adjusting grade of the fan and preset time intervals until the rotating speed of the fan is increased to the expected rotating speed; and the adjusting grade of the fan is determined according to the precision of the pulse width modulation duty ratio corresponding to the fan.

In some specific embodiments, the noise detection duration determining module may specifically include:

an initial detection duration determining unit, configured to acquire environment detection parameters associated with the device, and determine an initial detection duration corresponding to each of the environment detection parameters based on a detection duration determining rule corresponding to each of the environment detection parameters;

and the noise detection time length determining unit is used for determining the noise detection time length through an average calculation or weighted average calculation mode based on all the initial detection time lengths.

In some embodiments, the environment detection parameters include any one or more of a current time, an environment image, an environment light level, and a system volume output state of the device;

the detection duration determination rule corresponding to the current time is a rule constructed based on different detection durations corresponding to different time periods; the time periods comprise day time periods and late night time periods;

the detection duration determining rule corresponding to the environment image is a rule constructed based on different environment image types and corresponding to different detection durations; the types of the environment images comprise a noisy environment type and a quiet environment type;

Further, the embodiment of the present application also discloses an electronic device, which is shown in fig. 5, and the content in the drawing cannot be considered as any limitation to the application scope.

Fig. 5 is a schematic structural diagram of an electronic device 20 according to an embodiment of the present disclosure. The electronic device 20 may specifically include: at least one processor 21, at least one memory 22, a power supply 23, a communication interface 24, an input output interface 25, and a communication bus 26. The memory 22 is configured to store a computer program, and the computer program is loaded and executed by the processor 21 to implement relevant steps in the method for regulating and controlling a cooling fan disclosed in any one of the foregoing embodiments.

In this embodiment, 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 that can be applied to the technical solution of the present application, and is not specifically limited herein; the input/output interface 25 is configured to obtain 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.

In addition, the storage 22 is used as a carrier for storing resources, and may be a read-only memory, a random access memory, a magnetic disk or an optical disk, etc., the resources stored thereon include an operating system 221, a computer program 222, and data 223 including the current temperature, etc., and the storage manner may be a transient storage or a permanent storage.

The operating system 221 is used for managing and controlling each hardware device and the computer program 222 on the electronic device 20, so as to realize the operation and processing of the mass data 223 in the memory 22 by the processor 21, and may be Windows Server, netware, unix, linux, and the like. The computer program 222 may further include a computer program that can be used to perform other specific tasks in addition to the computer program that can be used to perform the cooling fan control method performed by the electronic device 20 disclosed in any of the foregoing embodiments.

Further, an embodiment of the present application further discloses a computer storage medium, where computer-executable instructions are stored in the computer storage medium, and when the computer-executable instructions are loaded and executed by a processor, the steps of the method for regulating and controlling a cooling fan disclosed in any of the foregoing embodiments are implemented.

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 by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

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.

Finally, it should also be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The method, the device, the equipment and the medium for regulating and controlling the cooling fan are described in detail, specific examples are applied in the description to explain the principle and the implementation mode of the invention, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, 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 invention.

Claims

1. A method for regulating and controlling a cooling fan is characterized by comprising the following steps:

acquiring a current temperature and a fan noise function of equipment, wherein an independent variable of the fan noise function is temperature, and a dependent variable of the fan noise function is fan noise;

acquiring an environmental noise value corresponding to the equipment;

acquiring an environment detection parameter associated with the equipment, and determining a noise detection duration based on the environment detection parameter;

2. The method as claimed in claim 1, wherein the obtaining a current temperature and fan noise function of the device comprises:

if the heat dissipation strategy is the first heat dissipation strategy, obtaining the body temperature of the equipment and a first fan noise function corresponding to the first heat dissipation strategy, wherein the independent variable of the first fan noise function is the body temperature of the equipment, and the dependent variable is fan noise;

3. The method as claimed in claim 2, wherein the first fan noise function is constructed by:

determining the lowest rotating speeds of the first fans corresponding to the equipment at different body temperatures according to the first heat dissipation strategy, and fitting by using a target function to obtain a first temperature rotating speed function; the first minimum fan speed is the minimum speed at which the fan is maintained at the fuselage temperature within a safe temperature;

constructing a rotating speed noise function according to the rotating speed of the fan and corresponding noise data of the fan, which are acquired under the condition of no environmental noise;

4. The method as claimed in claim 2, wherein the second fan noise function is constructed by:

determining the lowest rotation speed of a second fan corresponding to the equipment at different environmental temperatures according to the second heat dissipation strategy, and constructing a second temperature rotation speed function by combining the difference value of the temperature of the machine body and the safe temperature; the second fan minimum speed is the minimum speed of the fan at which the apparatus is maintained within a safe temperature at the ambient temperature;

5. The method as claimed in claim 1, further comprising, after increasing the speed of the fan to the desired speed:

6. The method as claimed in claim 5, further comprising, before adjusting the rotation speed of the fan to the target rotation speed:

7. The method as claimed in claim 1, wherein the increasing the rotation speed of the fan to the desired rotation speed comprises:

8. The method as claimed in any one of claims 1 to 7, wherein the obtaining an environment detection parameter associated with the device and determining a noise detection duration based on the environment detection parameter comprises:

9. The method according to claim 8, wherein the environment detection parameters include any one or more of a current time, an environment image, an environment illuminance, and a system volume output state of the device;

the detection time length determination rule corresponding to the ambient illuminance is a rule established based on different detection time lengths corresponding to different illuminance;

10. A cooling fan regulation and control device is characterized by comprising:

11. An electronic device, comprising:

a memory for storing a computer program;

a processor for executing the computer program to implement the method of regulating a cooling fan according to any one of claims 1 to 9.

12. A computer-readable storage medium for storing a computer program; wherein the computer program when executed by the processor implements the method of controlling a radiator fan according to any one of claims 1 to 9.