CN112524075A - Control method and device for electronic equipment fan - Google Patents
Control method and device for electronic equipment fan Download PDFInfo
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- CN112524075A CN112524075A CN202011358849.8A CN202011358849A CN112524075A CN 112524075 A CN112524075 A CN 112524075A CN 202011358849 A CN202011358849 A CN 202011358849A CN 112524075 A CN112524075 A CN 112524075A
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- preset
- temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The embodiment of the invention discloses a method and a device for controlling a fan of electronic equipment, wherein the electronic equipment comprises a CPU chip, the CPU chip is provided with a temperature sensing unit, and the method comprises the following steps: acquiring the temperature detected by the temperature sensing unit; and if the temperature reaches a preset temperature value and the duration is greater than or equal to the preset duration, adjusting the rotating speed of the fan. The invention uses the temperature detected by the temperature sensing unit of the CPU chip to directly control the rotating speed of the fan, and adjusts the rotating speed of the fan when the duration exceeding the preset temperature value is longer than or equal to the preset duration, namely, the trigger delay is increased, thus avoiding the problem of unstable temperature of the CPU chip.
Description
Technical Field
The present invention relates to the field of electronic devices, and in particular, to a method and an apparatus for controlling a fan of an electronic device.
Background
At present, the rotational speed of fan is controlled to electronic equipment through discernment on the mainboard thermistor's temperature, thermistor has certain distance from CPU chip heat source on the mainboard, consequently, the temperature that detects with the thermistor on the mainboard is as the control foundation of fan rotational speed, the temperature performance is stable, can not rise and rise fast along with the temperature of CPU chip in the twinkling of an eye, the control rotational speed that can be stable, give the better experience of user, but this kind of mode needs additionally to increase the thermistor of listening the temperature, increase the cost of material, the space of mainboard has also been occupied.
Disclosure of Invention
In view of the above technical problems, embodiments of the present invention provide a method and an apparatus for controlling a fan of an electronic device.
A first aspect of an embodiment of the present invention provides a method for controlling a fan of an electronic device, where the electronic device includes a CPU chip, and the CPU chip has a temperature sensing unit, and the method includes:
acquiring the temperature detected by the temperature sensing unit;
and if the temperature reaches a preset temperature value and the duration is greater than or equal to the preset duration, adjusting the rotating speed of the fan.
Optionally, the electronic device further includes a power management chip, and if the temperature reaches a preset temperature value and the duration is greater than or equal to a preset duration, adjusting the rotation speed of the fan includes:
judging whether the temperature reaches a preset temperature value or not through the power management chip;
and counting the duration of the temperature reaching the preset temperature value through the power management chip.
Optionally, the preset temperature value includes a plurality of preset temperature values, the preset temperature values are sequentially increased in number, each preset temperature value corresponds to a preset rotation speed, and the size of the preset rotation speed is positively correlated with the size of the corresponding preset temperature value.
Optionally, the difference between the fan noises generated by the preset rotating speeds corresponding to the adjacent preset temperature values is 2 dB.
Optionally, the preset time is 8 seconds; and/or the presence of a gas in the gas,
the electronic equipment is a computer.
A second aspect of an embodiment of the present invention provides a control apparatus for a fan of an electronic device, where the electronic device includes a CPU chip, and the CPU chip has a temperature sensing unit, and the apparatus includes:
the temperature acquisition module is used for acquiring the temperature detected by the temperature sensing unit;
and the rotating speed adjusting module is used for adjusting the rotating speed of the fan when the temperature reaches a preset temperature value and the duration is greater than or equal to the preset duration.
Optionally, the electronic device further includes a power management chip, and the rotation speed adjustment module is specifically configured to:
judging whether the temperature reaches a preset temperature value or not through the power management chip;
and counting the duration of the temperature reaching the preset temperature value through the power management chip.
Optionally, the preset temperature value includes a plurality of preset temperature values, the preset temperature values are sequentially increased in number, each preset temperature value corresponds to a preset rotation speed, and the size of the preset rotation speed is positively correlated with the size of the corresponding preset temperature value.
Optionally, the difference between the fan noises generated by the preset rotating speeds corresponding to the adjacent preset temperature values is 2 dB.
Optionally, the preset time is 8 seconds; and/or the presence of a gas in the gas,
the electronic equipment is a computer.
In the technical scheme provided by the embodiment of the invention, the rotation speed of the fan is directly controlled by the temperature detected by a temperature sensing Unit carried by a Central Processing Unit (CPU) chip, and the rotation speed of the fan is adjusted when the duration time exceeding a preset temperature value is greater than or equal to a preset time, namely, the trigger delay is increased, so that the problem of unstable temperature of the CPU chip is solved.
Drawings
Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the invention;
FIG. 2 is a flowchart illustrating a method for controlling a fan of an electronic device according to an embodiment of the invention;
FIG. 3 is a schematic diagram illustrating a variation of a temperature of a CPU chip when the electronic device is operating according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a corresponding relationship between a preset temperature value and a preset rotation speed according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a control device of an electronic device fan according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the following embodiments may be combined without conflict.
Referring to fig. 1, the electronic device according to the embodiment of the present invention may include a main board 10, where the main board 10 includes a CPU chip 11, and the CPU chip 11 has a temperature sensing unit, that is, the CPU chip 11 integrates the temperature sensing unit.
Further, the electronic device further comprises a fan for dissipating heat of the electronic device.
The electronic device of the embodiment of the invention can be a computer such as a notebook, a tablet computer, an all-in-one machine and the like, and can also be a desktop computer or other types of computers.
FIG. 2 is a flowchart illustrating a method for controlling a fan of an electronic device according to an embodiment of the invention; referring to fig. 2, a method for controlling a fan of an electronic device according to an embodiment of the present invention includes the following steps:
s201, acquiring the temperature detected by a temperature sensing unit;
in some embodiments, the electronic device may further include a power management chip EC, the CPU chip 11 directly transmits the temperature detected by the temperature sensing unit to the power management chip when acquiring the temperature detected by the temperature sensing unit, and then the power management chip determines whether to trigger the adjustment of the rotation speed of the fan according to the temperature detected by the temperature sensing unit, compared with the case that the CPU chip 11 determines whether to trigger the adjustment of the rotation speed of the fan according to the temperature detected by the temperature sensing unit, in the embodiment of the present invention, the temperature acquisition process is executed on the CPU chip 11, and the trigger process is executed on the power management chip, so that the execution logic of the CPU chip 11 is simpler, and the power management chip can more simply realize the control of the rotation speed of the fan.
S202, if the temperature reaches a preset temperature value and the duration is greater than or equal to a preset duration, adjusting the rotating speed of the fan.
In addition, if the temperature does not reach the preset temperature value, the rotating speed of the fan does not need to be adjusted, namely the rotating speed of the fan is kept at the current rotating speed.
It should be noted that, S202 is to directly adjust the rotation speed of the fan according to the temperature detected by the temperature sensing unit, so that the control is more sensitive.
The preset duration can be set according to needs, and for example, the preset duration is greater than or equal to 8 seconds. For this reason, in the embodiment of the present invention, the preset duration is 8 seconds, and the rotation speed of the fan is adjusted after exceeding the preset temperature for 8 seconds continuously, so that the problem of unstable temperature of the CPU chip 11 itself can be avoided, and the control sensitivity is ensured.
In the method for controlling the fan of the electronic equipment, the temperature detected by the temperature sensing unit of the CPU chip 11 directly controls the rotating speed of the fan, and when the duration time of exceeding the preset temperature value is greater than or equal to the preset time, the rotating speed of the fan is adjusted, namely, the trigger delay is increased, so that the problem of unstable temperature of the CPU chip 11 is solved.
For example, the implementation process of S202 may include the following steps:
(1) judging whether the temperature reaches a preset temperature value or not through a power management chip;
(2) and counting the duration of the temperature reaching the preset temperature value through the power management chip.
It should be understood that the implementation process of S202 is not limited thereto, and both the temperature acquisition and the triggering may be performed in the CPU chip 11, for example.
The preset temperature value of the embodiment of the present invention may include one or more, and for example, the preset temperature value includes a plurality of values.
Table 1 shows an exemplary correspondence between preset temperature values and preset rotational speeds; fig. 4 is a schematic diagram illustrating a corresponding relationship between a preset temperature value and a preset rotation speed according to an embodiment of the present invention; referring to fig. 1 and 4, a plurality of preset temperature values are sequentially incremented, each preset temperature value corresponds to a preset rotation speed, and the size of the preset rotation speed is positively correlated to the size of the corresponding preset temperature value.
TABLE 1
| Step | Preset temperature value T | Preset speed of rotation R | Fan noise (dBA) |
| Step1 | T1 | R1 | A |
| Step2 | T2 | R2 | B |
| Step3 | T3 | R3 | C |
| Step4 | T4 | R4 | D |
| Step5 | T5 | R5 | E |
Wherein, T1> T2> T3> T4> T5, R1> R2> R3> R4> R5.
Further optionally, the difference between the fan noises generated by the preset rotating speeds corresponding to the adjacent preset temperature values is 2dB, so that the noise requirement is met. As shown in table 1, a-B is 2dB, C-B is 2dB, D-C is 2dB, and E-D is 2 dB.
The above describes a method for controlling an electronic device fan in an embodiment of the present invention, and a control apparatus for an electronic device fan in an embodiment of the present invention is described below.
Referring to fig. 5, a control apparatus of an electronic device fan according to an embodiment of the invention may include a temperature obtaining module 100 and a rotation speed adjusting module 200.
The temperature acquisition module 100 is configured to acquire a temperature detected by the temperature sensing unit;
and the rotating speed adjusting module 200 is configured to adjust the rotating speed of the fan when the temperature reaches a preset temperature value and the duration is greater than or equal to a preset duration.
In some embodiments, the electronic device further includes a power management chip, and the rotation speed adjustment module 200 is specifically configured to: judging whether the temperature reaches a preset temperature value or not through a power management chip; and counting the duration of the temperature reaching the preset temperature value through the power management chip.
In some embodiments, the preset temperature values include a plurality of preset temperature values, the plurality of preset temperature values sequentially increase in number, each preset temperature value corresponds to a preset rotation speed, and the size of the preset rotation speed is positively correlated with the size of the corresponding preset temperature value.
In some embodiments, the difference between the fan noises generated by the preset rotation speeds corresponding to the adjacent preset temperature values is 2 dB.
In some embodiments, the preset duration is 8 seconds.
The control device of the electronic equipment fan according to the embodiment of the present invention can be explained with reference to the control method of the electronic equipment fan.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for controlling a fan of an electronic device, wherein the electronic device comprises a CPU chip with a temperature sensing unit, the method comprising:
acquiring the temperature detected by the temperature sensing unit;
and if the temperature reaches a preset temperature value and the duration is greater than or equal to the preset duration, adjusting the rotating speed of the fan.
2. The method as claimed in claim 1, wherein the electronic device further comprises a power management chip, and the adjusting the rotation speed of the fan if the temperature reaches a preset temperature value and the duration is greater than or equal to a preset duration comprises:
judging whether the temperature reaches a preset temperature value or not through the power management chip;
and counting the duration of the temperature reaching the preset temperature value through the power management chip.
3. The method of claim 1, wherein the preset temperature values include a plurality of preset temperature values, the preset temperature values sequentially increase, each preset temperature value corresponds to a preset rotation speed, and the size of the preset rotation speed is positively correlated to the size of the corresponding preset temperature value.
4. The method as claimed in claim 3, wherein the difference between the fan noises generated by the preset rotation speeds corresponding to the adjacent preset temperature values is 2 dB.
5. The method for controlling the fan of the electronic device according to claim 1, wherein the preset duration is 8 seconds; and/or the presence of a gas in the gas,
the electronic equipment is a computer.
6. A control device of a fan of an electronic device, wherein the electronic device comprises a CPU chip with a temperature sensing unit, the device comprises:
the temperature acquisition module is used for acquiring the temperature detected by the temperature sensing unit;
and the rotating speed adjusting module is used for adjusting the rotating speed of the fan when the temperature reaches a preset temperature value and the duration is greater than or equal to the preset duration.
7. The apparatus according to claim 6, wherein the electronic device further comprises a power management chip, and the rotation speed adjustment module is specifically configured to:
judging whether the temperature reaches a preset temperature value or not through the power management chip;
and counting the duration of the temperature reaching the preset temperature value through the power management chip.
8. The apparatus according to claim 6, wherein the preset temperature values include a plurality of preset temperature values, the preset temperature values sequentially increase in number, each preset temperature value corresponds to a preset rotation speed, and the preset rotation speed is positively correlated to the corresponding preset temperature value.
9. The apparatus as claimed in claim 8, wherein the difference between the fan noises generated at the preset rotational speeds corresponding to the adjacent preset temperature values is 2 dB.
10. The control device of the electronic equipment fan as claimed in claim 6, wherein the preset time period is 8 seconds; and/or the presence of a gas in the gas,
the electronic equipment is a computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011358849.8A CN112524075A (en) | 2020-11-27 | 2020-11-27 | Control method and device for electronic equipment fan |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011358849.8A CN112524075A (en) | 2020-11-27 | 2020-11-27 | Control method and device for electronic equipment fan |
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| CN112524075A true CN112524075A (en) | 2021-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011358849.8A Pending CN112524075A (en) | 2020-11-27 | 2020-11-27 | Control method and device for electronic equipment fan |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114794851A (en) * | 2022-06-07 | 2022-07-29 | 杭州老板电器股份有限公司 | Cooking appliance and control method and control device thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1474062A (en) * | 2002-08-07 | 2004-02-11 | 联想(北京)有限公司 | Method and device for closed-loop controlling cooling fan rotation speed according to CPU temperature |
| CN105443424A (en) * | 2015-12-18 | 2016-03-30 | 南京南瑞继保电气有限公司 | Control device and method for inverter cooling fan |
| CN106371540A (en) * | 2016-08-25 | 2017-02-01 | 联想(北京)有限公司 | System power management method and chip, and electronic device |
-
2020
- 2020-11-27 CN CN202011358849.8A patent/CN112524075A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1474062A (en) * | 2002-08-07 | 2004-02-11 | 联想(北京)有限公司 | Method and device for closed-loop controlling cooling fan rotation speed according to CPU temperature |
| CN105443424A (en) * | 2015-12-18 | 2016-03-30 | 南京南瑞继保电气有限公司 | Control device and method for inverter cooling fan |
| CN106371540A (en) * | 2016-08-25 | 2017-02-01 | 联想(北京)有限公司 | System power management method and chip, and electronic device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114794851A (en) * | 2022-06-07 | 2022-07-29 | 杭州老板电器股份有限公司 | Cooking appliance and control method and control device thereof |
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