CN107870660B - Fan control method of electronic device - Google Patents
Fan control method of electronic device Download PDFInfo
- Publication number
- CN107870660B CN107870660B CN201610848454.3A CN201610848454A CN107870660B CN 107870660 B CN107870660 B CN 107870660B CN 201610848454 A CN201610848454 A CN 201610848454A CN 107870660 B CN107870660 B CN 107870660B
- Authority
- CN
- China
- Prior art keywords
- fan
- temperature
- electronic device
- cpu
- pwm duty
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
A fan control method of an electronic device comprises the following steps: and recording the load capacity of the electronic device. Setting the electronic device as the load, and measuring the temperature of the CPU and the system temperature in the shell under different pulse width modulation duty ratios of the CPU fan to generate a first temperature list; measuring the temperature of the CPU and the temperature of a system in the shell when the first system fan is at different pulse width modulation duty ratios under each pulse width modulation duty ratio of the CPU fan so as to generate a second temperature list; obtaining a first low temperature mode parameter or a first low rotation speed mode parameter according to the first and second temperature lists. The first low-temperature mode parameter is the pulse width modulation duty ratio of the CPU fan and the first system fan corresponding to the CPU at the lowest temperature. The first low-speed mode parameter is the lowest value of the pulse width modulation duty ratio of the CPU fan and the first system fan when the CPU does not exceed the preset temperature.
Description
Technical Field
The present invention relates to a control method, and more particularly, to a fan control method for an electronic device.
Background
Currently, an electronic device such as a desktop computer has at least one Central Processing Unit (CPU) fan, which mainly helps to cool the CPU, but only blows heat from the CPU to other parts of the housing, but does not help to cool the housing. Therefore, some users may add a system fan in the casing (such as the front casing, the rear casing or the side casing) to blow the heat generated by the cpu and the motherboard out of the casing, so as to reduce the temperature of the whole system.
At present, the rotation speed of the central processor fan is adjusted only according to the temperature of the central processor, the rotation speed of the system fan is adjusted only according to the system temperature, and the central processor fan and the system fan operate without mutual interference, so that the heat dissipation efficiency of the electronic device cannot be effectively improved, and a user cannot select the most suitable fan operation mode according to requirements. In addition, the operation modes of the CPU fan and the system fan are not changed due to the common load of the user when using the electronic device.
Disclosure of Invention
The present invention provides a fan control method for an electronic device, which records the load of the electronic device during a period of time, and measures the relationship between the temperature of the cpu and the system temperature in the casing when the cpu fan and the system fan are operating under the load, so as to provide users with fan operating modes with different requirements under the condition close to the actual operating load.
In order to achieve the above object, the present invention provides a fan control method for an electronic device, which is suitable for an electronic device, the electronic device includes a housing, a Central Processing Unit (CPU) disposed in the housing, a CPU fan, and a first system fan, the fan control method for the electronic device includes: recording a load capacity of the electronic device in a period of time; setting the load of the electronic device as a load, and measuring the temperature of the central processing unit and the system temperature in the shell under a plurality of different Pulse Width modulation duty cycles (PWM cycles) of the central processing unit fan to generate a first temperature list; setting the load of the electronic device as a load, and measuring the temperature of the central processing unit and the temperature of a system in the shell when the first system fan is at a plurality of different pulse width modulation duty ratios under each pulse width modulation duty ratio of the central processing unit fan so as to generate a second temperature list; and obtaining a low-temperature mode parameter or a first low-rotation-speed mode parameter of the electronic device under the load capacity according to the first temperature list and the second temperature list, wherein the low-temperature mode parameter is the pulse width modulation duty ratio of the central processor fan and the pulse width modulation duty ratio of the first system fan which correspond to the central processor at the lowest temperature, and the first low-rotation-speed mode parameter is the lowest value of the pulse width modulation duty ratios of the central processor fan and the lowest value of the pulse width modulation duty ratios of the first system fan when the temperature of the central processor does not exceed a preset temperature.
The invention has the technical effects that:
the fan control method of the electronic device of the invention obtains the use habit of a user by recording the load capacity of the electronic device in a period of time to know the load capacity of the electronic device. In order to know the relationship between the operation of the cpu fan and the first system fan under the load condition of the electronic device, the temperature of the cpu and the system temperature inside the enclosure, the load of the electronic device is then set as the load condition, and the temperature of the cpu and the system temperature inside the enclosure at a plurality of different pwm duty cycles (e.g., 100%, 99%, 98% … … 20%) are measured to generate a first temperature list. The fan control method of the electronic device of the invention also comprises the steps of setting the load of the electronic device as a load, and measuring the temperature of the central processing unit and the system temperature in the shell when the first system fan is at a plurality of different pulse width modulation duty ratios (for example, 100 percent, 99 percent and 98 percent … … 20 percent) under one pulse width modulation duty ratio (for example, 100 percent) of the central processing unit fan; measuring the temperature of the central processing unit and the system temperature in the casing of the first system fan at a plurality of different pulse width modulation duty ratios (for example, 100%, 99%, 98% … … 20%) under another pulse width modulation duty ratio (for example, 99%) of the central processing unit fan; in this way, the temperature of the cpu and the temperature of the system in the enclosure are measured at a last pwm duty cycle (e.g., 20%) of the cpu fan when the first system fan is at a plurality of different pwm duty cycles (e.g., 100%, 99%, 98% … … 20%, etc.), and a second temperature list is generated according to the measured temperatures of the cpu and the system in the enclosure. Finally, the fan control method of the electronic device of the invention obtains the first low-temperature mode parameter or the first low-rotation-speed mode parameter of the electronic device under the load capacity according to the first temperature list and the second temperature list, so that a user can select the fan operation mode of low temperature or low rotation speed according to the requirement. In addition, no matter the first low-temperature mode parameter or the first low-rotation-speed mode parameter selected by the user is close to the real load of the electronic device, the common operation result of the pulse width modulation duty ratio of the central processor fan and the pulse width modulation duty ratio of the first system fan is matched according to the pulse width modulation duty ratio of the central processor fan, and compared with the situation that the central processor fan and the first system fan in the prior art respectively operate without interference, the fan control method of the electronic device can effectively improve the heat dissipation efficiency of the electronic device.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
Fig. 1 is a schematic diagram of a fan control method of an electronic device according to an embodiment of the invention;
fig. 2 is a schematic diagram of a fan control method of an electronic device according to another embodiment of the invention.
Wherein the reference numerals
100. 100 a: fan control method of electronic device
105 to 138: step (ii) of
Detailed Description
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
in the fan control method of the electronic device in the prior art, the cpu fan and the system fan operate independently without interference. Suppose a user uses a high-level cpu and operates the cpu at a high load, which results in an increase in the temperature of the cpu. At this time, although the rotation speed of the cpu fan is increased to lower the temperature of the cpu, the heat energy generated by the cpu during operation remains in the system, and the rotation speed of the system fan is increased until the temperature of the system is increased to blow out the heat energy out of the casing. Therefore, in the fan control method of the electronic device in the prior art, the operation of the system fan has a time difference, so that the heat dissipation efficiency of the system is limited.
The fan control method of the electronic device of the embodiment records the load of the electronic device in a period of time to obtain the load of the electronic device. And then the electronic device measures the relationship between the operation between the central processor fan and the first system fan, the temperature of the central processor and the system temperature in the shell under the load capacity, so as to respectively provide proper pulse width modulation duty ratio for the central processor fan and the first system fan under the real operation state close to the electronic device, thereby improving the heat dissipation efficiency. This will be described in detail below.
Fig. 1 is a schematic diagram of a fan control method of an electronic device according to an embodiment of the invention. Referring to fig. 1, a fan control method 100 of an electronic device according to the present embodiment is suitable for an electronic device (not shown). The electronic device is, for example, a desktop computer or a server. The electronic device comprises a shell, a mainboard arranged in the shell, a Central Processing Unit (CPU) and a control chip arranged on the mainboard, a CPU fan arranged on the CPU and a first system fan arranged on or in the shell.
In the embodiment, the control chip is a Super input/output (Super I/O) chip for detecting the temperature of the cpu and the system temperature inside the casing, and controlling and detecting a Pulse Width Modulation duty cycle (PWM duty cycle) of the cpu fan and a PWM duty cycle of the system fan. Of course, the type of the control chip is not limited thereto, and in other embodiments, the control chip may also be an Embedded Controller (EC) or a Micro Controller Unit (MCU).
The method 100 for controlling a fan of an electronic device of the present embodiment includes the following steps. Step 105, recording a load of the electronic device within a period of time. In this embodiment, the electronic device further includes a display card and a memory, and the load of the electronic device includes a utilization rate of the cpu, a utilization rate of the display card, a utilization rate of the memory, or a combination thereof. In general, the operation of a desktop computer generates heat from the cpu, the display card and the memory. Because the first system fan is to blow out the heat in the casing, when measuring the relationship between the operation between the cpu fan and the first system fan, the temperature of the cpu, and the system temperature in the casing, if the usage rates of these main heat sources in the electronic device can be taken into consideration, the actual usage state can be approached, and the more accurate relationship between the operation between the cpu fan and the first system fan, the temperature of the cpu, and the system temperature in the casing can be obtained. Of course, the calculation method of the load amount of the electronic device is not limited to the above. The load information can be stored on a hard disk or a storage medium.
Further, the time interval of step 105 may be a one week, 10 days, one month, longer or shorter time interval. Since different users have different habits when using the electronic device, the main purpose of step 105 is to know whether the load of the user is light, medium or heavy when using the electronic device at ordinary times, so that the user can measure the relationship between the operation of the cpu fan and the first system fan, the temperature of the cpu and the system temperature in the case in a state close to the actual operation state of the electronic device.
In this embodiment, the load amount used in the step 110 is, for example, the load amount with the largest operation time according to the load amount of the electronic device recorded within a time interval. But the amount of load employed in step 110 may be an average amount of load in other embodiments.
In this embodiment, the pwm duty cycles of the cpu fan are between 20% and 100%. If the load of the electronic device during a period of time is mostly 15%, for example, in one embodiment, the usage rate of the cpu is set to 15%, and the pwm duty cycle of the cpu fan is, for example, 100%, 99%, 98% … … 20%. Then step 110 is to measure the cpu temperature and the system temperature in the enclosure at the pwm duty cycles of 100%, 99%, 98% … … 20% for the cpu fan with the cpu fixed at 15% utilization to generate a first temperature list.
Of course, the range and interval of the pwm duty cycles of the cpu fan are not limited to the above. In addition, as long as the pwm duty cycles of the cpu fan include N pwm duty cycles, the first temperature list includes the temperatures of N cpus and the system temperatures in N cabinets respectively corresponding to the cpu fans at the 1 st to N pwm duty cycles.
More specifically, in the present embodiment, the pulse width modulation duty cycles of the first system fan are between 20% and 100%. In step 120, the utilization rate of the cpu is also fixed at 15%, and the cpu fan is set to one of the pwm duty ratios (e.g., 100%), and the temperature of the cpu and the system temperature in the enclosure are measured when the first system fan is at a plurality of different pwm duty ratios (e.g., 100%, 99%, 98% … … 20%). The cpu fan is set to another pwm duty cycle (e.g., 99%), and the temperature of the cpu and the system temperature in the enclosure are measured when the first system fan is at a plurality of different pwm duty cycles (e.g., 100%, 99%, 98% … … 20%).
By analogy, the pwm duty cycles of the cpu fans are continuously reduced step by step, the temperatures of the cpus and the system temperature in the enclosure are measured at a plurality of different pwm duty cycles (e.g., 100%, 99%, 98% … … 20%) of the first system fan at the last pwm duty cycle (e.g., 20%) of the cpu fans, and a second temperature list is generated according to the temperatures of all the cpus and the system temperature in the enclosure measured in step 120.
Of course, the range and interval of the pwm duty cycle of the first system fan are not limited to the above. If the pwm duty cycles of the cpu fan include N pwm duty cycles, and the pwm duty cycles of the first system fan include M pwm duty cycles, the second temperature list includes the temperatures of NxM cpus and the system temperatures in NxM enclosures respectively corresponding to the cpu fans in the 1 st to N pwm duty cycles, and the first system fan has a plurality of combinations of the 1 st to M pwm duty cycles, where N may be equal to M, or N is not equal to M.
If N is not equal to M, for example, the cpu temperature and the system temperature in the enclosure may be measured when the first system fan is at a plurality of different pwm duty cycles (e.g., 100%, 99%, 98%, … … 20%) under one of the pwm duty cycles (e.g., 100%). The cpu fan is set to another pwm duty cycle (e.g., 99%), and the temperature of the cpu and the system temperature in the enclosure are measured when the first system fan is at a plurality of different pwm duty cycles (e.g., 100%, 98%, 96% … … 20%). Of course, the selection of the pulse width modulation duty cycle is not limited to the above.
It should be noted that, in fig. 1, step 110 is performed first, and then step 120 is performed, but there is no order limitation between step 110 and step 120.
Since the pwm duty cycle of the fan is related to the rotational speed, the lowest pwm duty cycle also represents the lowest or lower rotational speed, which is related to the power consumption. That is, step 131 finds out the condition that the rotation speeds of the CPU fan and the first system fan are lower.
Accordingly, the user can select the operating mode of the cpu and the first system fan to operate according to the mode (the first low temperature mode parameter) that enables the cpu to have the lowest temperature, or according to the mode (the first low speed mode parameter) that the rotation speed is low when the temperature of the cpu is maintained below 70 ℃.
Certainly, the operation manners of the cpu fan and the first system fan are not limited thereto, and in this embodiment, the fan control method 100 of the electronic device further includes a step 112 of setting the load of the electronic device as the load amount, and measuring the decibels of the noises in the enclosure of the cpu fan under the different pwm duty ratios to generate a first noise list. The first noise list may be stored on, for example, a hard disk or a storage medium.
In this embodiment, the noise volume can be detected by one or more microphones built in the motherboard or plugged in the Mic Audio Jack interface of the motherboard, the number of the microphones can be one or more, so as to receive the sound of the noise in the housing, and the received noise decibel information can be transmitted to the control chip for judgment or recording. It is noted that step 112 may be performed simultaneously with or separately from step 110.
Likewise, in this embodiment, the pulse width modulation duty cycles of the first system fan are between 20% and 100%. In step 122, the utilization rate of the cpu is also fixed at 15%, and the cpu fan is set to one of the pwm duty ratios (e.g., 100%), and the noise decibels in the enclosure of the first system fan at a plurality of different pwm duty ratios (e.g., 100%, 99%, 98% … … 20%) are measured. Then, the cpu fan is set to another pwm duty cycle (e.g., 99%), and noise decibels in the enclosure of the first system fan at a plurality of different pwm duty cycles (e.g., 100%, 99%, 98% … … 20%) are measured.
By analogy, the pwm duty cycles of the cpu fans are continuously reduced step by step, the decibels of the noise in the enclosure at a plurality of different pwm duty cycles (e.g., 100%, 99%, 98% … … 20%) of the first system fan are measured at the last pwm duty cycle (e.g., 20%) of the cpu fans, and a second noise list is generated according to the decibels of the noise in all the enclosures measured in step 120. It should be noted that step 122 may be performed simultaneously with or separately from step 120. Furthermore, there is no sequential division between steps 112 and 122.
Next, in step 132, a first low noise mode parameter of the electronic device under the load is obtained according to the first noise list and the second noise list, where the first low noise mode parameter is the pwm duty cycle of the cpu fan and the pwm duty cycle of the first system fan corresponding to the lowest noise decibel value in the chassis.
That is, in addition to the low temperature mode (the first low temperature mode parameter), the operating modes of the cpu fan and the first system fan may be selected by the user to operate under the condition that the noise decibel in the enclosure is the lowest (the first low noise mode parameter), or may be operated under the condition that the rotation speeds of the cpu fan and the first system fan are the lowest or lower (the second low rotation speed mode parameter) when the temperature of the cpu is maintained below 70 degrees and the noise decibel in the enclosure is below 65 decibels.
Of course, in other embodiments, the fan control method of the electronic device may also have only steps 110, 120, 130 and 131 or only steps 112, 122, 132 and 133 according to the requirement, and is not limited to fig. 1. In addition, since the number of system fans in the electronic device is usually more than one, that is, the electronic device further includes a second system fan disposed in the housing. The fan control method in the case where the electronic device has two system fans will be further described below. It should be noted that, in the following embodiments, the same or similar steps as those in the previous embodiment are denoted by the same symbols, and description is omitted, and only differences are described below.
Fig. 2 is a schematic diagram of a fan control method of an electronic device according to another embodiment of the invention. Referring to fig. 2, the fan control method 100a of the electronic device of the present embodiment includes, in addition to steps 110 and 120, step 125 of setting a load of the electronic device as the load amount, and measuring the temperature of the cpu and the system temperature in the housing when the second system fan is at a plurality of different pwm duty ratios under a plurality of combinations of the pwm duty ratios of the cpu fan and the pwm duty ratios of the first system fan, respectively, to generate a third temperature list. The third temperature list may be stored, for example, on a hard disk or on a storage medium.
More specifically, in step 125, if the utilization of the cpu is fixed at 15%, and the cpu fan is set to one of the pwm duty ratios (e.g., 100%) first, and the first system fan is set to one of the pwm duty ratios (e.g., 100%), the temperature of the cpu and the system temperature inside the casing are measured when the second system fan is at a plurality of different pwm duty ratios (e.g., 100%, 99%, 98% … … 20%). Next, the pwm duty (e.g., 100%) of the cpu fan is fixed, the first system fan is set to another pwm duty (e.g., 99%), and the temperature of the cpu and the system temperature in the enclosure are measured at a plurality of different pwm duty (e.g., 100%, 99%, 98% … … 20%) of the second system fan.
In this way, on the premise that the pwm duty of the cpu fan is not changed (100%) temporarily, the pwm duty of the first system fan is continuously decreased step by step to measure the temperature of the cpu and the temperature of the system in the casing when the second system fan is at a plurality of different pwm duty cycles (e.g., 100%, 99%, 98% … … 20%) under each pwm duty of the first system fan.
Then, the cpu fan is set to another pwm duty cycle (e.g., 99%), and the above operations are repeated, for example, when the cpu fan is set to the pwm duty cycle (e.g., 99%), the first system fan is set to one of the pwm duty cycles (e.g., 100%), and the temperature of the cpu and the system temperature inside the casing are measured when the second system fan is set to a plurality of different pwm duty cycles (e.g., 100%, 99%, 98% … … 20%). The first system fan is then set to another pwm duty cycle (e.g., 99%), and the temperature of the cpu and the system temperature inside the enclosure are measured at a plurality of different pwm duty cycles (e.g., 100%, 99%, 98% … … 20%) for the second system fan.
The pwm duty cycles of the cpu fans, the pwm duty cycles of the first system fans, and the pwm duty cycles of the second system fans are measured one by one in this manner, and the temperatures of the cpu and the system temperature in the casing are measured in various combinations, and a third temperature list is generated based on the temperatures of all the cpu and the system temperature in the casing measured in step 125.
Of course, the difference between the range of the pwm duty cycle of the cpu fan and each adjustment, the difference between the range of the pwm duty cycle of the first system fan and each adjustment, and the difference between the range of the pwm duty cycle of the second system fan and each adjustment are not limited to the above. As long as the pwm duty cycles conforming to the cpu fan include N pwm duty cycles, the pwm duty cycles of the first system fan include M pwm duty cycles, the pwm duty cycles of the second system fan include P pwm duty cycles, and the third temperature list includes the NxMxP cpu temperatures and the NxMxP system temperatures in the chassis corresponding to the combinations of the 1 st to N pwm duty cycles of the cpu fan, the 1 st to M pwm duty cycles of the first system fan, and the 1 st to P pwm duty cycles of the second system fan, where M may be equal to P, or M is not equal to P. In addition, it should be noted that steps 110, 120 and 125 are not sequentially divided.
Similarly to the previous embodiment, the user can select the operation modes of the cpu fan, the first system fan and the second system fan to operate according to the mode (the second low temperature mode parameter) that enables the lowest temperature of the cpu, or according to the mode (the third low speed mode parameter) that the rotation speeds of the cpu fan, the first system fan and the second system fan are the lowest or lower when the temperature of the cpu is maintained below 70 ℃.
In addition, as shown in fig. 2, the method 100a for controlling a fan of an electronic device according to the present embodiment, in addition to steps 112 and 122, further includes step 126 of setting a load of the electronic device as the load amount, and measuring decibels of noise in the enclosure when the second system fan is at a plurality of different pwm duty ratios under a plurality of combinations of the pwm duty ratios of the cpu fan and the pwm duty ratios of the first system fan respectively, so as to generate a third noise list. The third noise list may be stored on, for example, a hard disk or a storage medium.
Similarly, if the utilization of the cpu is fixed at 15%, and the cpu fan is set to one of the pwm duty ratios (e.g., 100%), and the first system fan is set to one of the pwm duty ratios (e.g., 100%), the noise decibels in the enclosure of the second system fan at a plurality of different pwm duty ratios (e.g., 100%, 99%, 98% … … 20%) are measured. Then, under the same pwm duty (100%) of the cpu fan, the first system fan is set to another pwm duty (e.g., 99%), and the noise decibels in the enclosure of the second system fan at a plurality of different pwm duties (e.g., 100%, 99%, 98% … … 20%) are measured.
In this way, on the premise that the pwm duty of the cpu fan is not changed (100%) temporarily, the pwm duty of the first system fan is continuously reduced step by step to measure the noise decibels in the enclosure when the second system fan is at a plurality of different pwm duty cycles (e.g., 100%, 99%, 98% … … 20%) under each pwm duty of the first system fan.
Then, the cpu fan is set to another pwm duty cycle (e.g. 99%), and the above is repeated, and under this pwm duty cycle (e.g. 99%), the first system fan is set to one of the pwm duty cycles (e.g. 100%), and the noise decibels in the enclosure of the second system fan are measured at a plurality of different pwm duty cycles (e.g. 100%, 99%, 98% … … 20%). The first system fan is then set to another pwm duty cycle (e.g., 99%) and the decibels of noise within the enclosure at a plurality of different pwm duty cycles (e.g., 100%, 99%, 98% … … 20%) are measured for the second system fan.
The pwm duty cycles of the cpu fans, the pwm duty cycles of the first system fans, and the pwm duty cycles of the second system fans are measured one by one in this manner for noise decibels in the enclosures under various permutation combinations, and a third noise list is generated according to the noise decibels in all enclosures measured in step 126. Step 126 may be performed simultaneously with or separately from step 125.
And 137, obtaining a second low noise mode parameter of the electronic device under the load according to the first noise list, the second noise list, and the third noise list, wherein the second low noise mode parameter is the pwm duty of the cpu fan, the pwm duty of the first system fan, and the pwm duty of the second system fan corresponding to the lowest noise decibel value in the chassis.
That is, the user can select the operating mode of the cpu fan, the first system fan and the second system fan to operate according to the lowest noise decibel in the enclosure (the second low noise mode parameter), or to operate according to the lowest or lower rotation speed of the cpu fan, the first system fan and the second system fan (the fourth low rotation mode parameter) when the temperature of the cpu is maintained below 70 degrees and the noise decibel in the enclosure is below 65 decibels.
Of course, if there are more system fans in the electronic device, the pwm duty cycles of the cpu fans and the temperatures, system temperatures, and noise decibels of the cpu under various permutations of the pwm duty cycles of the system fans can be measured gradually according to the above-mentioned manner under the general load closest to the electronic device, so as to obtain the pwm duty cycles of the cpu fans and the system fans when the temperature of the cpu is lowest, the noise in the casing is lowest, or the rotation speed is lowest, so that the user can select the fan control manner according to the requirement.
In summary, the fan control method of the electronic device of the present invention records the load of the electronic device in a period of time to obtain how much load the electronic device usually operates. In order to know the relationship between the operation of the cpu fan and the first system fan under the load condition of the electronic device, the temperature of the cpu and the system temperature inside the enclosure, the load of the electronic device is then set as the load condition, and the temperature of the cpu and the system temperature inside the enclosure at a plurality of different pwm duty cycles (e.g., 100%, 99%, 98% … … 20%) are measured to generate a first temperature list. The fan control method of the electronic device of the invention also comprises the steps of setting the load of the electronic device as a load, and measuring the temperature of the central processing unit and the system temperature in the shell when the first system fan is at a plurality of different pulse width modulation duty ratios (for example, 100 percent, 99 percent and 98 percent … … 20 percent) under one pulse width modulation duty ratio (for example, 100 percent) of the central processing unit fan; measuring the temperature of the central processing unit and the system temperature in the casing of the first system fan at a plurality of different pulse width modulation duty ratios (for example, 100%, 99%, 98% … … 20%) under another pulse width modulation duty ratio (for example, 99%) of the central processing unit fan; in this way, the temperature of the cpu and the temperature of the system in the enclosure are measured at a last pwm duty cycle (e.g., 20%) of the cpu fan when the first system fan is at a plurality of different pwm duty cycles (e.g., 100%, 99%, 98% … … 20%, etc.), and a second temperature list is generated according to the measured temperatures of the cpu and the system in the enclosure. Finally, the fan control method of the electronic device of the invention obtains the first low-temperature mode parameter or the first low-rotation-speed mode parameter of the electronic device under the load capacity according to the first temperature list and the second temperature list, so that a user can select the fan operation mode of low temperature or low rotation speed according to the requirement. In addition, no matter the first low-temperature mode parameter or the first low-rotation-speed mode parameter selected by the user is close to the real load of the electronic device, the common operation result of the pulse width modulation duty ratio of the central processor fan and the pulse width modulation duty ratio of the first system fan is matched according to the pulse width modulation duty ratio of the central processor fan, and compared with the situation that the central processor fan and the first system fan in the prior art respectively operate without interference, the fan control method of the electronic device can effectively improve the heat dissipation efficiency of the electronic device.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (12)
1. A fan control method of an electronic device is suitable for an electronic device, wherein the electronic device comprises a casing, a Central Processing Unit (CPU) arranged in the casing, a CPU fan and a first system fan, and the fan control method of the electronic device comprises the following steps:
recording a load capacity of the electronic device in a period of time;
setting the load of the electronic device as the load, and measuring the temperature of the central processing unit and the system temperature in the shell under a plurality of different pulse width modulation duty ratios of the central processing unit fan to generate a first temperature list;
setting the load of the electronic device as the load and measuring the temperature of the central processing unit and the system temperature in the shell when the first system fan is at a plurality of different PWM duty ratios under each PWM duty ratio of the central processing unit fan so as to generate a second temperature list; and
obtaining a low-temperature mode parameter or a first low-rotation-speed mode parameter of the electronic device under the load according to the first temperature list and the second temperature list, wherein the low-temperature mode parameter is the pulse width modulation duty ratio of the central processor fan and the pulse width modulation duty ratio of the first system fan which correspond to the central processor at the lowest temperature, and the first low-rotation-speed mode parameter is the lowest value of the pulse width modulation duty ratios of the central processor fan and the lowest value of the pulse width modulation duty ratios of the first system fan when the temperature of the central processor does not exceed a preset temperature.
2. The method as claimed in claim 1, wherein the electronic device further comprises a display card and a memory, and the load of the electronic device comprises a utilization rate of the cpu, a utilization rate of the display card, a utilization rate of the memory, or a combination thereof.
3. The method for controlling a fan of an electronic device according to claim 1, further comprising:
setting the load of the electronic device as the load, and measuring the noise decibels in the shell of the central processor fan under the different pulse width modulation duty ratios to generate a first noise list;
setting the load of the electronic device as the load and measuring the noise decibels in the enclosure of the first system fan at the different PWM duty ratios under the PWM duty ratios of the CPU fan to generate a second noise list; and
and obtaining a first low noise mode parameter of the electronic device under the load according to the first noise list and the second noise list, wherein the first low noise mode parameter is a pulse width modulation duty ratio of the central processing unit fan and a pulse width modulation duty ratio of the first system fan corresponding to the lowest noise decibel value in the enclosure.
4. The method for controlling a fan of an electronic device according to claim 3, further comprising:
and obtaining a second low-rotation-speed mode parameter of the electronic device under the load according to the first noise list, the second noise list, the first temperature list and the second temperature list, wherein the second low-rotation-speed mode parameter is the lowest value of the pulse width modulation duty ratios of the central processor fan and the lowest value of the pulse width modulation duty ratios of the first system fan when the temperature of the central processor does not exceed the preset temperature and the noise decibel in the shell does not exceed a preset decibel.
5. The method as claimed in claim 4, wherein the predetermined decibel is between 60 and 70 decibels.
6. The method as claimed in claim 1, wherein the plurality of PWM duty cycles of the CPU fan includes N PWM duty cycles, the plurality of PWM duty cycles of the first system fan includes M PWM duty cycles, the first temperature list includes N temperatures of the CPU and N temperatures of the system in the chassis respectively corresponding to the CPU fan at 1-N PWM duty cycles, the second temperature list includes NxM temperatures of the CPU and NxM temperatures of the system in the chassis respectively corresponding to the CPU fan at 1-N PWM duty cycles and various combinations of the 1-M PWM duty cycles of the first system fan, where N is equal to M, or N is not equal to M.
7. The method as claimed in claim 1, wherein the electronic device includes a second system fan disposed in the housing, the method further comprising:
setting the load of the electronic device as the load, and respectively measuring the temperature of the central processing unit and the system temperature in the shell when the second system fan is at a plurality of different PWM duty ratios under a plurality of combinations of the PWM duty ratios of the central processing unit fan and the PWM duty ratios of the first system fan so as to generate a third temperature list; and
obtaining a second low-temperature mode parameter or a third low-speed mode parameter of the electronic device under the load according to the first temperature list, the second temperature list and the third temperature list, wherein the second low-temperature mode parameter is the pwm duty of the cpu fan, the pwm duty of the first system fan and the pwm duty of the second system fan corresponding to the cpu at the lowest temperature, and the third low-speed mode parameter is the lowest value of the pwm duty, the lowest values of the pwm duty of the first system fan and the lowest values of the pwm duty of the second system fan when the temperature of the cpu does not exceed the preset temperature.
8. The method as claimed in claim 7, wherein the plurality of PWM duty cycles of the CPU fan includes N PWM duty cycles, the plurality of pulse width modulation duty cycles of the first system fan includes M pulse width modulation duty cycles, the plurality of pulse width modulation duty cycles of the second system fan includes P pulse width modulation duty cycles, the third temperature list includes NxMxP temperatures of the central processing units and NxMxP temperatures of the systems inside the chassis corresponding to a plurality of combinations of 1 st to N pwm duty cycles of the central processing unit fan, 1 st to M pwm duty cycles of the first system fan, and 1 st to P pwm duty cycles of the second system fan, where M is equal to P or M is not equal to P.
9. The method for controlling a fan of an electronic device according to claim 7, further comprising:
setting the load of the electronic device as the load, and measuring the noise decibels in the shell of the central processor fan under the different pulse width modulation duty ratios to generate a first noise list;
setting the load of the electronic device as the load, and measuring the noise decibels in the enclosure of the first system fan at the different PWM duty ratios under the PWM duty ratios of the CPU fan to generate a second noise list;
setting the load of the electronic device as the load, and respectively measuring noise decibels in the enclosure when the second system fan is at a plurality of different PWM duty ratios under the various combinations of the PWM duty ratios of the CPU fan and the PWM duty ratios of the first system fan, so as to generate a third noise list; and
and obtaining a second low noise mode parameter of the electronic device under the load according to the first noise list, the second noise list and the third noise list, wherein the second low noise mode parameter is a pulse width modulation duty ratio of the central processor fan, a pulse width modulation duty ratio of the first system fan and a pulse width modulation duty ratio of the second system fan corresponding to the lowest noise decibel value in the enclosure.
10. The method for controlling a fan of an electronic device according to claim 9, further comprising:
obtaining a fourth low rotation speed mode parameter of the electronic device under the load according to the first noise list, the second noise list, the third noise list, the first temperature list, the second temperature list and the third temperature list, wherein the fourth low rotation speed mode parameter is a lowest value of the pulse width modulation duty ratios of the central processor fan, a lowest value of the pulse width modulation duty ratios of the first system fan and a lowest value of the pulse width modulation duty ratios of the second system fan when the temperature of the central processor does not exceed the preset temperature and the noise decibel in the enclosure does not exceed a preset decibel.
11. The method as claimed in claim 1, wherein the pwm duty cycles of the cpu fan are between 20% and 100%, and the pwm duty cycles of the first system fan are between 20% and 100%.
12. The method as claimed in claim 1, wherein the predetermined temperature is between 65 ℃ and 75 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610848454.3A CN107870660B (en) | 2016-09-26 | 2016-09-26 | Fan control method of electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610848454.3A CN107870660B (en) | 2016-09-26 | 2016-09-26 | Fan control method of electronic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107870660A CN107870660A (en) | 2018-04-03 |
| CN107870660B true CN107870660B (en) | 2020-09-22 |
Family
ID=61751633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610848454.3A Active CN107870660B (en) | 2016-09-26 | 2016-09-26 | Fan control method of electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107870660B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443507B (en) * | 2019-08-30 | 2022-06-28 | 宏碁股份有限公司 | Intelligent fan rotating speed adjusting method, computer device and server |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6101459A (en) * | 1997-08-15 | 2000-08-08 | Compaq Computer Corporation | System and associated method for cooling components within a computer system |
| CN1536232A (en) * | 2003-04-09 | 2004-10-13 | 华为技术有限公司 | Fan monitoring device and its monitoring method |
| CN1657787A (en) * | 2004-02-21 | 2005-08-24 | 华为技术有限公司 | Method and device for control speed of fan |
| CN1916867A (en) * | 2005-08-19 | 2007-02-21 | 鸿富锦精密工业（深圳）有限公司 | Automatic method for controlling rotate speed of fan |
| CN101025163A (en) * | 2006-02-25 | 2007-08-29 | 鸿富锦精密工业（深圳）有限公司 | Fan rotating-speed control system and method |
| TW201425731A (en) * | 2012-12-24 | 2014-07-01 | Celestica Technology Consultancy Shanghai Co Ltd | Apparatus for controlling fan module of a rack and method of the same |
| TW201523239A (en) * | 2013-12-06 | 2015-06-16 | Hon Hai Prec Ind Co Ltd | System and method for detecting working status of fans and fan controller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334673A (en) * | 2007-06-29 | 2008-12-31 | 鸿富锦精密工业（深圳）有限公司 | Computer fan control circuit and control method |
-
2016
- 2016-09-26 CN CN201610848454.3A patent/CN107870660B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6101459A (en) * | 1997-08-15 | 2000-08-08 | Compaq Computer Corporation | System and associated method for cooling components within a computer system |
| CN1536232A (en) * | 2003-04-09 | 2004-10-13 | 华为技术有限公司 | Fan monitoring device and its monitoring method |
| CN1657787A (en) * | 2004-02-21 | 2005-08-24 | 华为技术有限公司 | Method and device for control speed of fan |
| CN1916867A (en) * | 2005-08-19 | 2007-02-21 | 鸿富锦精密工业（深圳）有限公司 | Automatic method for controlling rotate speed of fan |
| CN101025163A (en) * | 2006-02-25 | 2007-08-29 | 鸿富锦精密工业（深圳）有限公司 | Fan rotating-speed control system and method |
| TW201425731A (en) * | 2012-12-24 | 2014-07-01 | Celestica Technology Consultancy Shanghai Co Ltd | Apparatus for controlling fan module of a rack and method of the same |
| TW201523239A (en) * | 2013-12-06 | 2015-06-16 | Hon Hai Prec Ind Co Ltd | System and method for detecting working status of fans and fan controller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107870660A (en) | 2018-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8233644B2 (en) | Multiple fan acoustic interaction control | |
| US10076067B2 (en) | System and method of controlling an air mover | |
| US10571979B2 (en) | Cooling fan speed control profile | |
| US20130228632A1 (en) | Controlling a cooling system for a computer system | |
| US10627793B2 (en) | Normalized control of an IHS component | |
| US11720154B2 (en) | Environmental and temperature based computing device fan adjustments | |
| US11500435B2 (en) | Information handling system having regional cooling | |
| US20160076544A1 (en) | Fan control system and method thereof | |
| US20080306633A1 (en) | Optimized power and airflow multistage cooling system | |
| TWI589112B (en) | Fan controlling method of electronic device | |
| CN111142640B (en) | Control method of electronic equipment | |
| US11147186B2 (en) | Predictive fan control using workload profiles | |
| CN107870660B (en) | Fan control method of electronic device | |
| US11402883B2 (en) | System and method for dynamic fan control in an information handling system | |
| TWI592578B (en) | Fan controlling method of electronic device | |
| CN107869473B (en) | The control method for fan of electronic device | |
| US20100277825A1 (en) | Hard disk access method | |
| US20130285817A1 (en) | Customizable alarm sytem and method for computer | |
| US20050108591A1 (en) | Method for reduced power consumption | |
| US11934286B2 (en) | Subsystem power range configuration based on workload profile | |
| US11868225B2 (en) | Provided inputs and provided output actions for use in platform management policies for platform management drivers | |
| US11755082B2 (en) | Methods and systems for processor-calibrated fan control | |
| US20240231452A9 (en) | System and method for granular and dynamic control of fan speed and direction | |
| US20240134430A1 (en) | System and method for granular and dynamic control of fan speed and direction | |
| US20220350720A1 (en) | Computing device application performance optimization system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Taiwan Xindian District, New Taipei City Chinese Po Road No. 6 Applicant after: GIGA-BYTE TECHNOLOGY Co.,Ltd. Address before: Chinese Taiwan Taipei City store Bao Jiang Road No. 6 Applicant before: GIGA-BYTE TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |