CN109779939B - Fan rotating speed control method and device - Google Patents
Fan rotating speed control method and device Download PDFInfo
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- CN109779939B CN109779939B CN201910019460.1A CN201910019460A CN109779939B CN 109779939 B CN109779939 B CN 109779939B CN 201910019460 A CN201910019460 A CN 201910019460A CN 109779939 B CN109779939 B CN 109779939B
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Abstract
The invention discloses a method and a device for controlling the rotating speed of a fan. The method comprises the following steps: acquiring a decibel value of environmental noise; searching a fan rotating speed value corresponding to the decibel value in a preset fan rotating speed table; and dynamically controlling the rotating speed of the fan according to the rotating speed value of the fan. The invention can automatically control the rotating speed of the fan according to the environmental noise.
Description
Technical Field
The present invention relates to computer fan control technology, and more particularly, to a method and apparatus for controlling the rotational speed of a fan.
Background
Fans are widely used in conventional or modern devices such as computers, communication products, automotive electronics, and the like as a common heat dissipation tool.
Generally, the higher the rotation speed of the fan within a certain rotation speed range, the better the heat dissipation effect can be achieved. However, the higher the rotation speed of the fan and the larger the air volume, the higher the noise generated, for example, the fan may generate strong noise during long-term high-speed operation, which causes serious noise trouble to the user.
Therefore, how to dynamically control the rotation speed of the fan is an urgent issue to be researched and solved in the industry.
Disclosure of Invention
The invention aims to provide a method and a device for controlling the rotating speed of a fan, which can dynamically control the rotating speed of the fan according to environmental noise.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention provides a fan rotating speed control method, which comprises the following steps: acquiring a decibel value of environmental noise; searching a fan rotating speed value corresponding to the decibel value in a preset fan rotating speed table; and dynamically controlling the rotating speed of the fan according to the rotating speed value of the fan.
Optionally, the method further comprises: converting the decibel value into a parameter value usable by the computer system, wherein the fan speed value corresponding to the decibel value is looked up in a preset fan speed table, and the method comprises the following steps: and searching a fan rotating speed value corresponding to the parameter value in a preset fan rotating speed table.
Optionally, dynamically controlling the rotation speed of the fan according to the fan rotation speed value includes: comparing the decibel value with a preset decibel value; if the decibel value is larger than the preset decibel value, judging whether the temperature of the central processing unit or the graphic processor is higher than a first preset temperature; if the temperature of the central processing unit or the graphic processing unit is higher than a first preset temperature, switching to an ambient noise control fan rotating speed mechanism, and if the temperature of the central processing unit or the graphic processing unit is equal to or lower than the first preset temperature, the fan does not rotate.
Optionally, the method further comprises: if the decibel value is smaller than or equal to the preset decibel value, judging whether the temperature of the central processing unit or the graphic processor is higher than a second preset temperature; if the temperature of the central processing unit or the graphic processing unit is higher than a second preset temperature, the central processing unit or the graphic processing unit automatically reduces the frequency, and if the temperature of the central processing unit or the graphic processing unit is equal to or lower than the second preset temperature, the system is switched to an ambient noise control fan rotating speed mechanism, wherein the second preset temperature is higher than the first preset temperature.
Optionally, the method further comprises: judging whether the temperature of the central processing unit or the graphic processing unit is higher than a third preset temperature after the frequency reduction; if the temperature of the CPU or the graphic processor is higher than a third preset temperature, switching to a wafer temperature control fan rotating speed mechanism, and if the temperature of the CPU or the graphic processor is equal to or lower than the third preset temperature, switching to an ambient noise control fan rotating speed mechanism, wherein the third preset temperature is higher than the second preset temperature.
Optionally, obtaining a decibel value of ambient noise comprises: and acquiring the decibel value of the environmental noise through a microphone or a sensor.
The invention provides a fan speed control device, comprising: the acquisition module is configured to acquire a decibel value of the environmental noise; the searching module is configured to search a fan rotating speed value corresponding to the decibel value in a preset fan rotating speed table; and the control module is configured to dynamically control the rotating speed of the fan according to the rotating speed value of the fan.
Optionally, the apparatus further comprises: the conversion module is configured to convert the decibel value into a parameter value usable by the computer system, wherein the search module searches a fan rotating speed value corresponding to the parameter value in a preset fan rotating speed table.
Optionally, the control module compares the decibel value with a preset decibel value, if the decibel value is greater than the preset decibel value, it is determined whether the temperature of the central processing unit or the graphic processor is higher than a first preset temperature, if the temperature of the central processing unit or the graphic processor is higher than the first preset temperature, the control module switches to an ambient noise control fan speed mechanism, and if the temperature of the central processing unit or the graphic processor is equal to or lower than the first preset temperature, the fan does not rotate.
Optionally, if the decibel value is less than or equal to the preset decibel value, the control module judges whether the temperature of the central processing unit or the graphic processor is higher than a second preset temperature; if the temperature of the central processing unit or the graphic processing unit is higher than a second preset temperature, the central processing unit or the graphic processing unit automatically reduces the frequency, and if the temperature of the central processing unit or the graphic processing unit is equal to or lower than the second preset temperature, the system is switched to an ambient noise control fan rotating speed mechanism, wherein the second preset temperature is higher than the first preset temperature.
Optionally, the control module determines whether the temperature of the central processing unit or the graphics processing unit is higher than a third preset temperature after the frequency reduction; if the temperature of the CPU or the graphic processor is higher than a third preset temperature, switching to a wafer temperature control fan rotating speed mechanism, and if the temperature of the CPU or the graphic processor is equal to or lower than the third preset temperature, switching to an ambient noise control fan rotating speed mechanism, wherein the third preset temperature is higher than the second preset temperature.
Optionally, the input device is a microphone or a sensor.
Optionally, the obtaining module obtains the decibel value of the environmental noise through a microphone or a sensor.
Based on the disclosure of the above embodiments, the embodiments of the present invention have the following beneficial effects: through the decibel value that obtains ambient noise, look for the fan rotational speed value that corresponds with the decibel value in predetermined fan tachometer to according to the rotational speed of fan rotational speed value dynamic control fan, can make the fan change the rotational speed along with the ambient noise that detects, consequently, realized that the intelligence of fan rotational speed is floated.
Drawings
Fig. 1 is a flowchart illustrating a fan speed control method according to an exemplary embodiment of the present invention.
Fig. 2 is a flowchart illustrating a fan speed control method according to another exemplary embodiment of the present invention.
Fig. 3 is a block diagram illustrating a fan rotation speed control apparatus according to an exemplary embodiment of the present invention.
Detailed Description
Various aspects and features of the present invention are described herein with reference to the drawings.
It will be understood that various modifications may be made to the embodiments of the invention herein. Accordingly, the foregoing description should not be construed as limiting, but merely as exemplifications of embodiments. Other modifications will occur to those skilled in the art which are within the scope and spirit of the invention.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with a general description of the invention given above, and the detailed description of the embodiments given below, serve to explain the principles of the invention.
These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the accompanying drawings.
It should also be understood that, although the invention has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of the invention, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
The above and other aspects, features and advantages of the present invention will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present invention are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which can be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the invention in unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure.
The specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the invention.
Fig. 1 is a flowchart illustrating a fan speed control method according to an exemplary embodiment of the present invention. The method of fig. 1 may be performed by a computer, as shown in fig. 1, the method comprising:
110: and acquiring the decibel value of the environmental noise.
In the embodiment of the invention, the computer can acquire the environmental noise under the current environment through the input device or the sensor, and stores the decibel value of the environmental noise in the storage unit of the computer after calculation through third-party software.
Specifically, the computer is a modern intelligent electronic device capable of automatically processing mass data at high speed according to program operation, and can perform not only numerical calculation but also logic calculation, and also has a memory function. Computers can be classified as supercomputers, network computers (e.g., servers, switches, etc.), industrial controls, personal computers (e.g., desktop, laptop, tablet, etc.), and embedded systems. Preferably, the computer of the present invention is a notebook computer.
An input device is a device that inputs data and information to a computer, and is one of the main devices for exchanging information between a user and a computer system. Input devices may include, but are not limited to, a keyboard, mouse, camera, scanner, light pen, handwriting input pad, joystick, voice input device, and the like. Preferably, the input device of the present invention is a microphone or a sensor.
The sensor is a detection device which can sense the measured information and convert the sensed information into an electric signal or other information in a required form according to a certain rule to output so as to meet the requirements of information transmission, processing, storage, display, recording, control and the like. The sensor of the present invention is an acoustic sensor.
The environmental noise refers to the sound generated in industrial production, building construction, transportation and social life to interfere with the surrounding living environment. Ambient noise can be classified according to different noise sources, and noise limits are specified by different noise standards.
It should be noted that the built-in microphone of the notebook computer may be disposed at the middle position of the upper frame of the notebook computer screen, may also be disposed at the lower left corner of the notebook computer keyboard region, or may also be disposed at the left front side of the notebook computer, which is not limited in this respect.
It should be noted that the microphone of the present invention is not limited to a built-in microphone, and may be an external microphone.
120: and searching a fan rotating speed value corresponding to the decibel value in a preset fan rotating speed table.
In the embodiment of the present invention, a Basic Input Output System (BIOS) of a computer obtains a decibel value of ambient noise from a storage unit through a driver, and searches a preset fan speed table for a fan speed value corresponding to the decibel value.
Specifically, the fan inside the computer mainly plays a role in cooling and exhausting the computer hardware. Generally, fans inside a computer may include a power supply fan, a Central Processing Unit (CPU) fan, a display card fan, and a system fan.
The fan speed refers to the number of revolutions per minute of the fan blade. The rotating speed of the fan can be measured through an internal rotating speed signal and is checked in the BIOS; measurements may also be made externally and viewed by other instruments.
Table 1 is a preset fan speed table storing the correspondence between ambient noise and fan noise. As shown in table 1, assuming that the ambient noise is 100dB, and then is equal to 80dB after subtracting 20dB, the fan speed can be adjusted to level 1, i.e. the fan noise is "enhanced 3"; assuming that the ambient noise is 60dB, and is equal to 40dB after subtracting 20dB, the fan speed can be adjusted to any one of levels 1 to 5, i.e. the fan noise is any one of "medium" to "enhanced 3".
It should be noted that, in order to prevent the computer system from overheating due to low rotation speed, a software protection mechanism, i.e. CPU down-conversion (Throttling), is added during low environmental noise. Here, the CPU down-conversion is a CPU overheat protection function that is automatically turned on when the CPU temperature reaches about 90 degrees, and is normally turned on by default. Furthermore, it should be noted that the ideal fan noise should not exceed 32dB, and the ambient noise should always be greater than the fan noise.
| Grade | Ambient noise | Noise of |
| 1 | Ambient noise (dB) -20(dB) less than or equal to 80(dB) | Enhancement 3(60dB) |
| 2 | Ambient noise (dB) -20(dB) less than or equal to 70(dB) | Enhancement 2(50dB) |
| 3 | Ambient noise (dB) -20(dB) less than or equal to 60(dB) | Enhancement 1(40dB) |
| 4 | Ambient noise (dB) -20(dB) less than or equal to 50(dB) | High (32dB) |
| 5 | Ambient noise (dB) -20(dB) less than or equal to 40(dB) | Medium (28dB) + 90 deg.C CPU frequency reduction |
| 6 | Ambient noise (dB) -20(dB) less than or equal to 30(dB) | Low (25dB) + 70 ℃ down conversion of CPU |
TABLE 1
130: and dynamically controlling the rotating speed of the fan according to the rotating speed value of the fan.
In the embodiment of the invention, the computer dynamically controls the rotating speed of the fan according to the rotating speed value of the fan.
Specifically, an Embedded Controller (EC) disposed in the computer may dynamically control the rotation speed of the fan according to the fan rotation speed value found in a preset fan rotation speed table, thereby implementing intelligent floating of the fan rotation speed.
According to the technical scheme provided by the embodiment of the invention, the fan rotating speed value corresponding to the decibel value is searched in the preset fan rotating speed table by acquiring the decibel value of the environmental noise, and the rotating speed of the fan is dynamically controlled according to the fan rotating speed value, so that the rotating speed of the fan can be changed along with the detected environmental noise, and the intelligent floating of the rotating speed of the fan is realized.
In another embodiment of the present invention, converting the decibel value into a parameter value usable by a computer system, wherein looking up a fan speed value corresponding to the decibel value in a preset fan speed table comprises: and searching a fan rotating speed value corresponding to the parameter value in a preset fan rotating speed table.
Specifically, before the BIOS obtains the decibel value of the environmental noise from the storage unit through the driver, the environmental noise obtained by the microphone or the sensor needs to be processed through third-party software, that is, the decibel value of the environmental noise is converted into a parameter value usable by the computer system; further, a fan rotating speed value corresponding to the parameter value is searched in a preset fan rotating speed table, and the rotating speed of the fan is dynamically adjusted according to the fan rotating speed value.
In another embodiment of the present invention, dynamically controlling the speed of the fan according to the fan speed value comprises: comparing the decibel value with a preset decibel value; if the decibel value is larger than the preset decibel value, judging whether the temperature of the central processing unit or the graphic processor is higher than a first preset temperature; if the temperature of the central processing unit or the graphic processing unit is higher than a first preset temperature, switching to an ambient noise control fan rotating speed mechanism, and if the temperature of the central processing unit or the graphic processing unit is equal to or lower than the first preset temperature, the fan does not rotate.
Specifically, the rotation speed of the fan is dynamically adjusted according to the rotation speed value of the fan, and meanwhile, the decibel value of the environmental noise can be compared with a preset decibel value, and the rotation speed of the fan is controlled through which fan rotation speed control mechanism is determined according to a comparison result. Here, the fan speed control mechanism may include a wafer temperature control fan speed mechanism and an ambient noise control fan speed mechanism.
Further, if the decibel value is larger than the preset decibel value, whether the temperature of the CPU is higher than a first preset temperature is further judged; if the temperature of the CPU is higher than the first preset temperature, switching to an ambient noise control fan rotating speed mechanism, namely controlling the rotating speed of the fan by the embedded controller according to the decibel value of the ambient noise; if the temperature of the CPU is equal to or lower than a first preset temperature, the fan is not rotated. Here, the preset decibel value may be 100dBA, and the first preset temperature may be 60 ℃.
In another embodiment of the present invention, the method further comprises: if the decibel value is smaller than or equal to the preset decibel value, judging whether the temperature of the central processing unit or the graphic processor is higher than a second preset temperature; if the temperature of the central processing unit or the graphic processing unit is higher than a second preset temperature, the central processing unit or the graphic processing unit automatically reduces the frequency, and if the temperature of the central processing unit or the graphic processing unit is equal to or lower than the second preset temperature, the system is switched to an ambient noise control fan rotating speed mechanism, wherein the second preset temperature is higher than the first preset temperature.
Specifically, if the decibel value of the environmental noise is less than or equal to the preset decibel value, further determining whether the temperature of the CPU or the Graphics Processing Unit (GPU) is higher than a second preset temperature; if the temperature of the CPU or the GPU is higher than a second preset temperature, the CPU or the GPU automatically reduces the frequency; and if the temperature of the CPU or the GPU is equal to or lower than a second preset temperature, switching to an ambient noise control fan rotating speed mechanism, namely controlling the rotating speed of the fan by the embedded controller according to the decibel value of the ambient noise. Here, the second preset temperature may be 80 ℃ and 60 ℃ higher than the first preset temperature.
In another embodiment of the present invention, the method further comprises: judging whether the temperature of the central processing unit or the graphic processing unit is higher than a third preset temperature after the frequency reduction; if the temperature of the CPU or the graphic processor is higher than a third preset temperature, switching to a wafer temperature control fan rotating speed mechanism, and if the temperature of the CPU or the graphic processor is equal to or lower than the third preset temperature, switching to an ambient noise control fan rotating speed mechanism, wherein the third preset temperature is higher than the second preset temperature.
Specifically, after the CPU or the GPU automatically reduces the frequency, whether the temperature of the CPU or the GPU is higher than a third preset temperature is determined; if the temperature of the CPU or the GPU is higher than a third preset temperature, the temperature is forcibly switched to a wafer temperature control fan rotating speed mechanism, namely the embedded controller controls the rotating speed of the fan according to the wafer temperature; if the temperature of the central processor or the graphic processor is equal to or lower than the third preset temperature, switching to an ambient noise control fan rotating speed mechanism, namely, controlling the rotating speed of the fan by the embedded controller according to the decibel value of the ambient noise. Here, the third preset temperature may be 90 ℃ and 80 ℃ higher than the second preset temperature.
In another embodiment of the present invention, obtaining decibel values for ambient noise comprises: and acquiring the decibel value of the environmental noise through a microphone or a sensor.
Specifically, the decibel value of the ambient noise may be acquired by a microphone or a sound sensor. Here, the microphone may be internal or external, and the present invention is not limited thereto.
In another embodiment of the present invention, a User Interface (UI) may be further established, so that a User can switch the fan speed control mechanism, i.e. the wafer temperature control fan speed mechanism and the ambient noise control fan speed mechanism, on the UI according to his/her preference.
All the above-mentioned optional technical solutions can be combined arbitrarily to form the optional embodiments of the present invention, and are not described herein again.
Fig. 2 is a flowchart illustrating a fan speed control method according to another exemplary embodiment of the present invention. As shown in fig. 2, the method includes:
202: acquiring a decibel value of environmental noise;
204: converting the decibel value into a parameter value usable by the computer system;
206: searching a fan rotating speed value corresponding to the parameter value in a preset fan rotating speed table;
208: judging whether the decibel value is larger than a preset decibel value or not;
210: if the decibel value is larger than the preset decibel value, judging whether the temperature of the central processing unit or the graphic processor is higher than a first preset temperature;
212: if the temperature of the central processor or the graphic processor is higher than a first preset temperature, switching to an ambient noise control fan rotating speed mechanism;
214: if the temperature of the central processor or the graphic processor is equal to or lower than a first preset temperature, the fan does not rotate;
216: if the decibel value is smaller than or equal to the preset decibel value, judging whether the temperature of the central processing unit or the graphic processor is higher than a second preset temperature;
218: if the temperature of the central processing unit or the graphic processor is higher than a second preset temperature, the central processing unit or the graphic processor automatically reduces the frequency;
220: if the temperature of the central processor or the graphic processor is equal to or lower than a second preset temperature, switching to an ambient noise control fan rotating speed mechanism;
222: judging whether the temperature of the central processing unit or the graphic processing unit is higher than a third preset temperature after the frequency reduction;
224: if the temperature of the central processing unit or the graphic processor is higher than a third preset temperature, switching to a wafer temperature control fan rotating speed mechanism;
226: and if the temperature of the central processing unit or the graphic processing unit is equal to or lower than the third preset temperature, switching to an ambient noise control fan rotating speed mechanism.
According to the technical scheme provided by the embodiment of the invention, the fan rotating speed value corresponding to the decibel value is searched in the preset fan rotating speed table by acquiring the decibel value of the environmental noise, and the rotating speed of the fan is dynamically controlled according to the fan rotating speed value, so that the rotating speed of the fan can be changed along with the detected environmental noise, and the intelligent floating of the rotating speed of the fan is realized.
The following are embodiments of the apparatus of the present invention that may be used to perform embodiments of the method of the present invention. For details which are not disclosed in the embodiments of the apparatus of the present invention, reference is made to the embodiments of the method of the present invention.
Fig. 3 is a block diagram illustrating a fan rotation speed control apparatus according to an exemplary embodiment of the present invention. As shown in fig. 3, the apparatus includes:
an obtaining module 310 configured to obtain a decibel value of the environmental noise;
a searching module 320 configured to search a fan speed value corresponding to the decibel value in a preset fan speed table;
the control module 330 is configured to dynamically control the speed of the fan based on the fan speed value.
According to the technical scheme provided by the embodiment of the invention, the fan rotating speed value corresponding to the decibel value is searched in the preset fan rotating speed table by acquiring the decibel value of the environmental noise, and the rotating speed of the fan is dynamically controlled according to the fan rotating speed value, so that the rotating speed of the fan can be changed along with the detected environmental noise, and the intelligent floating of the rotating speed of the fan is realized.
In another embodiment of the present invention, the apparatus of fig. 3 further comprises:
a conversion module 340 configured to convert the decibel values into parameter values usable by the computer system,
the searching module 320 in fig. 3 searches a preset fan speed table for a fan speed value corresponding to the parameter value.
In another embodiment of the present invention, the control module 330 in fig. 3 compares the decibel value with a preset decibel value, determines whether the temperature of the cpu or the graphic processor is higher than a first preset temperature if the decibel value is greater than the preset decibel value, switches to an ambient noise control fan rotation speed mechanism if the temperature of the cpu or the graphic processor is higher than the first preset temperature, and does not rotate the fan if the temperature of the cpu or the graphic processor is equal to or lower than the first preset temperature.
In another embodiment of the present invention, if the db value is less than or equal to the predetermined db value, the control module 330 in fig. 3 determines whether the temperature of the cpu or the gpu is higher than a second predetermined temperature; if the temperature of the central processing unit or the graphic processing unit is higher than a second preset temperature, the central processing unit or the graphic processing unit automatically reduces the frequency, and if the temperature of the central processing unit or the graphic processing unit is equal to or lower than the second preset temperature, the system is switched to an ambient noise control fan rotating speed mechanism, wherein the second preset temperature is higher than the first preset temperature.
In another embodiment of the present invention, the control module 330 of fig. 3 determines whether the temperature of the cpu or the gpu is higher than a third predetermined temperature after the down-conversion; if the temperature of the CPU or the graphic processor is higher than a third preset temperature, switching to a wafer temperature control fan rotating speed mechanism, and if the temperature of the CPU or the graphic processor is equal to or lower than the third preset temperature, switching to an ambient noise control fan rotating speed mechanism, wherein the third preset temperature is higher than the second preset temperature.
In another embodiment of the invention, the input device is a microphone or a sensor.
In another embodiment of the present invention, the obtaining module 310 of fig. 3 obtains the decibel value of the ambient noise through a microphone or a sensor.
The implementation process of the functions and actions of each module in the above device is specifically described in the implementation process of the corresponding step in the above method, and is not described herein again.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.
Claims (6)
1. A fan speed control method comprising:
acquiring a decibel value of environmental noise;
searching a fan rotating speed value corresponding to the decibel value in a preset fan rotating speed table;
the method for dynamically controlling the rotating speed of the fan according to the rotating speed value of the fan comprises the following steps: comparing the decibel value with a preset decibel value; if the decibel value is larger than the preset decibel value, judging whether the temperature of the central processing unit or the graphic processor is higher than a first preset temperature; if the temperature of the central processing unit or the graphic processor is higher than the first preset temperature, switching to an ambient noise control fan rotating speed mechanism, and if the temperature of the central processing unit or the graphic processor is equal to or lower than the first preset temperature, the fan does not rotate; wherein the content of the first and second substances,
the method further comprises the following steps: if the decibel value is smaller than or equal to the preset decibel value, judging whether the temperature of the central processing unit or the graphic processor is higher than a second preset temperature; if the temperature of the central processing unit or the graphic processing unit is higher than the second preset temperature, the central processing unit or the graphic processing unit automatically reduces the frequency, and if the temperature of the central processing unit or the graphic processing unit is equal to or lower than the second preset temperature, the system is switched to the ambient noise control fan rotating speed mechanism, wherein the second preset temperature is higher than the first preset temperature;
the method further comprises the following steps: judging whether the temperature of the central processing unit or the graphic processing unit is higher than a third preset temperature after the frequency reduction; if the temperature of the central processing unit or the graphic processing unit is higher than the third preset temperature, switching to a wafer temperature control fan rotating speed mechanism, and if the temperature of the central processing unit or the graphic processing unit is equal to or lower than the third preset temperature, switching to an ambient noise control fan rotating speed mechanism, wherein the third preset temperature is higher than the second preset temperature.
2. The method of claim 1, further comprising:
converting the decibel values to parameter values usable by a computer system,
wherein, the searching the fan rotating speed value corresponding to the decibel value in the preset fan rotating speed table comprises:
and searching a fan rotating speed value corresponding to the parameter value in the preset fan rotating speed table.
3. The method of claim 1, wherein obtaining the decibel value for ambient noise comprises:
and acquiring the decibel value of the environmental noise through a microphone or a sensor.
4. A fan speed control apparatus comprising:
the acquisition module is configured to acquire a decibel value of the environmental noise;
the searching module is configured to search a fan rotating speed value corresponding to the decibel value in a preset fan rotating speed table;
the control module is configured to dynamically control the rotating speed of the fan according to the rotating speed value of the fan; wherein the content of the first and second substances,
the control module compares the decibel value with a preset decibel value, if the decibel value is larger than the preset decibel value, whether the temperature of a central processing unit or a graphic processor is higher than a first preset temperature is judged, if the temperature of the central processing unit or the graphic processor is higher than the first preset temperature, switching is made to an ambient noise control fan rotating speed mechanism, and if the temperature of the central processing unit or the graphic processor is equal to or lower than the first preset temperature, the fan does not rotate;
if the decibel value is smaller than or equal to the preset decibel value, the control module judges whether the temperature of the central processing unit or the graphic processor is higher than a second preset temperature; if the temperature of the central processing unit or the graphic processing unit is higher than a second preset temperature, the central processing unit or the graphic processing unit automatically reduces the frequency, and if the temperature of the central processing unit or the graphic processing unit is equal to or lower than the second preset temperature, the system is switched to an ambient noise control fan rotating speed mechanism, wherein the second preset temperature is higher than the first preset temperature;
the control module judges whether the temperature of the central processing unit or the graphic processing unit is higher than a third preset temperature after the frequency reduction; if the temperature of the CPU or the graphic processor is higher than a third preset temperature, switching to a wafer temperature control fan rotating speed mechanism, and if the temperature of the CPU or the graphic processor is equal to or lower than the third preset temperature, switching to an ambient noise control fan rotating speed mechanism, wherein the third preset temperature is higher than the second preset temperature.
5. The apparatus of claim 4, further comprising:
a conversion module configured to convert the decibel value to a parameter value usable by a computer system,
the searching module searches the fan rotating speed value corresponding to the parameter value in the preset fan rotating speed table.
6. The apparatus of any one of claims 4 to 5, further comprising an input device, the input device being a microphone or a sensor; and acquiring the decibel value of the environmental noise through the microphone or the sensor.
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| US11914436B2 (en) | 2019-09-04 | 2024-02-27 | Hewlett-Packard Development Company, L.P. | Cooling fan and noise sensor |
| CN113236587A (en) * | 2021-05-28 | 2021-08-10 | 浪潮电子信息产业股份有限公司 | Fan speed regulation method, device, equipment and medium for notebook computer |
| CN113719464A (en) * | 2021-08-26 | 2021-11-30 | 太仓市同维电子有限公司 | Method for detecting rotating speed of fan of non-network-management type switch |
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