CN102298431A - Computer heat radiation control system and method - Google Patents

Abstract

A computer cooling control system and method, the system is installed and run in a computer, the computer includes a CPU, a fan and a temperature sensor. The system includes: a parameter setting module, which sets the temperature standard deviation, the first logic temperature and the second logic temperature of the CPU; A logic temperature and a second logic temperature determine whether the operating temperature of the CPU needs to be adjusted; and an adjustment module is used to adjust the CPU by adjusting the fan speed of the fan in the operating mode and the operating frequency of the CPU when the operating temperature of the CPU needs to be adjusted. working temperature. By implementing the invention, the system temperature of the computer under four different fan operation modes can be adjusted, and the system noise generated when the fan is accelerated and decelerated can be suppressed.

Description

Computer heat dissipation control system and method

technical field

The invention relates to a heat dissipation system and method for controlling electronic devices, in particular to a computer heat dissipation control system and method.

Background technique

With the rapid development of the computer system and server industry, the control requirements for system fans are becoming more and more stringent. Especially in the era of energy saving and emission reduction, the standards for energy saving and sound quality are becoming more and more stringent. Therefore, products must be engineered to improve system energy consumption and sound quality to meet product specifications and customer requirements. In addition to the necessary components in a computer system, such as a motherboard, a processor, a hard disk, etc., a cooling component must also be provided. At present, the heat dissipation components used in computer systems are mainly fans. The role and importance of fans in computer systems can be summarized in three points: (1) the computer system can maintain stable operation and good heat dissipation; 2) The energy consumption of the computer system occupies a certain important index; (3) It has a key influence on the sound quality control of the computer system. Among them, the fan behavior control logic is the most important factor affecting the control of the fan's energy consumption and noise. If the fan behavior control logic is improper, it will cause the heat dissipation and energy consumption of the computer system and increase the sound quality of the system. The system overheated and crashed.

invention information

In view of the above, it is necessary to provide a computer heat dissipation control system and method, which can adjust the system temperature of the computer in four different fan operation modes by controlling the logic temperature, and suppress the system noise generated by the fan when it is accelerating and decelerating.

The computer heat dissipation control system is installed and operated in a computer, and the computer includes a CPU, a fan and a temperature sensor. The system includes: a parameter setting module, which is used to set the temperature standard deviation, the first logic temperature and the second logic temperature of the CPU; a temperature detection module, which is used to detect the operating temperature of the CPU through a temperature sensor, and , the first logical temperature and the second logical temperature determine whether the operating temperature of the CPU needs to be adjusted; and the adjustment module is used to adjust the fan speed in the operation mode of the fan and the operating frequency of the CPU when the operating temperature of the CPU needs to be adjusted. Adjust the operating temperature of the CPU.

The computer heat dissipation control method includes the steps of: setting the temperature standard deviation, the first logic temperature and the second logic temperature of the CPU; detecting the operating temperature of the CPU through a temperature sensor; according to the temperature standard deviation, the first logic temperature and the second logic temperature Temperature determines whether the working temperature of the CPU needs to be adjusted; when the working temperature of the CPU needs to be adjusted, adjust the working temperature of the CPU by adjusting the fan speed in the operation mode of the fan and the working frequency of the CPU.

Compared with the prior art, the computer heat dissipation control system and method of the present invention can adjust the operating temperature of the CPU in four different fan operation modes by adjusting the value of the control logic temperature, and the time delay can inhibit the fan from running. System noise during acceleration and deceleration.

Description of drawings

FIG. 1 is an implementation structure diagram of a preferred embodiment of the computer heat dissipation control system of the present invention.

FIG. 2 is a schematic diagram of the operation mode of the fan.

Fig. 3 is a flowchart of a preferred embodiment of a method for controlling heat dissipation of a computer without being affected by ambient temperature.

Fig. 4 is a flowchart of a preferred embodiment of a method for controlling heat dissipation of a computer under the influence of ambient temperature.

Explanation of main component symbols

computer 1

Computer cooling control system 10

Parameter setting module 101

Temperature detection module 102

Adjustment module 103

Fan 20

Temperature sensor 30

CPU 40

RAM 50

Detailed ways

As shown in FIG. 1 , it is an implementation structure diagram of a preferred embodiment of a computer heat dissipation control system 10 of the present invention. In this embodiment, the computer thermal control system 10 is installed and runs in a computer 1, which is a desktop computer (PC), notebook computer (Notebook), server (Server) or workstation (Workstation), etc. . The computer 1 also includes a fan 20, a temperature sensor 30, a central processing unit (central processing unit, CPU) 40, and a memory 50. This fan 20 is a kind of cooling device, is used for when computer 1 works for the electronic component inside computer 1, such as CPU 40 and internal memory 50 etc., provides cooling function. The temperature sensor 30 is used to detect the system temperature of the computer 1 in real time, including the temperature of the CPU 40, the memory 50, or the operating temperature of other internal electronic components. For ease of description, the present invention only uses the operating temperature of the CPU 40 as the system temperature of the computer 1.

The computer heat dissipation control system 10 can control the system temperature (shown in FIG. 3 ) under the influence of the computer 1 from the influence of the ambient temperature (i.e. in the Close loop state), and the computer 1 is affected by the environment temperature (i.e. in the Open loop state). The system temperature (refer to Figure 4). In this embodiment, the computer cooling control system 10 includes a parameter setting module 101 , a temperature detection module 102 and an adjustment module 103 .

The parameter setting module 101 is used to set the temperature standard deviation of the CPU 40, the first logical temperature T1 and the second logical temperature T2, and set the first reference temperature T3, the second reference temperature T4 and the third reference temperature T5, wherein T3<T4<T5. The temperature standard deviation value is the temperature standard deviation value defined by the manufacturer (such as Intel Corporation) for the CPU, for example, the temperature standard deviation value of the Intel CPU is "-16". The parameter setting module 101 is also used to set the ambient temperature range, for example, the highest ambient temperature value is 60°C, and the lowest ambient temperature value is -20°C.

The temperature detection module 102 is used to detect the operating temperature of the CPU 40 and the ambient temperature of the computer 1 through the temperature sensor 30. The temperature detection module 102 is also used to determine whether the operating temperature of the CPU needs to be adjusted according to the standard deviation of the temperature of the CPU 40, the first logical temperature T1 and the second logical temperature T2 when the computer 1 is not affected by the ambient temperature. The temperature detection module 102 is also used to determine whether the operating temperature of the CPU 40 is within the range of the ambient temperature when the computer 1 is affected by the ambient temperature.

The adjustment module 103 is used to adjust the operating temperature of the CPU 40 by controlling the fan speed of the fan 20 in different fan operating modes when the operating temperature of the CPU 40 needs to be adjusted, and adjust the CPU 40 by adjusting the operating frequency of the CPU 40. 40 operating temperature. The operation modes of the fan 20 include Default mode, Performance mode, Acoustic mode and Power saving mode.

In this embodiment, the adjustment module 103 increases or decreases the operating frequency of the CPU 40 according to the operating temperature of the CPU 40. For example, when the operating temperature T_PECI is greater than the first reference temperature T3, the adjustment module 103 reduces the operating frequency of the CPU 40 by 30%; when the operating temperature T_PECI is greater than the second reference temperature T4, the adjustment module 103 reduces the operating frequency of the CPU 40 by 70% %; when the operating temperature T_PECI is greater than the third reference temperature T5, the adjustment module 103 reduces the operating frequency of the CPU 40 by 100%, so that the computer 1 is automatically shut down. The adjustment module 103 is also used for sending out a warning message indicating that the operating temperature of the CPU 40 is too high when the operating temperature T_PECI is greater than the third reference temperature T5, so as to remind the user to shut down the computer 1 because the temperature is too high.

In this embodiment, the adjustment module 103 also increases or decreases the rotational speed of the fan 20 according to the operating temperature of the CPU 40 and the ambient temperature. For example, when the operating temperature of the CPU 40 is greater than the second reference temperature T4, the adjustment module 103 increases the speed of the fan 20 to V1=PWM×a%, where PWM is the highest proportion of the fan speed; when the operating temperature of the CPU 40 is lower than the first When the reference temperature T3, the adjustment module 103 reduces the speed of the fan 20 to V1=PWM×b%; when the operating temperature of the CPU 40 is greater than the ambient temperature, the adjustment module 103 increases the speed of the fan to V3=PWM×c%; when the CPU 40 When the working temperature is lower than the ambient temperature, the regulating module 103 reduces the fan speed to V3=PWM×d%.

As shown in FIG. 2 , it is a schematic diagram of the operation mode of the fan 20 . Generally, each CPU has a temperature standard deviation (marked as "T_control"), which is the temperature standard deviation value defined by the manufacturer (such as Intel Corporation) for the CPU. Different CPUs define different Temperature standard deviation value. In this embodiment, Intel CPU is taken as an example, the temperature standard deviation value is "-16", that is, the temperature standard deviation value T_control=-16. Assume that the operating temperature difference of the CPU 40 is ΔT=T1-T2, where T1 and T2 are the logical temperatures of the CPU 40 in the operation mode of the fan 20 . In this embodiment, when -30<ΔT<-20, the operation mode of the fan 20 is in the efficiency mode (Performance mode); when -20<ΔT<-15, the operation mode of the fan 20 is in the silent mode (Acoustic mode). ); when -17<ΔT<-10, the operation mode of the fan 20 is in the energy saving mode (Power saving mode); when -25<ΔT<-16, the operation mode of the fan 20 is in the default mode (Default mode). Therefore, by adjusting the logical temperature T1 and T2 values of the CPU 40, four different operating modes of the fan 20 can be adjusted to meet the requirements of the computer 1 in various states.

As shown in Fig. 3-4, it is a flow chart of a preferred embodiment of the computer heat dissipation control method of the present invention. In this embodiment, the heat dissipation control method can control the operating temperature (refer to FIG. 3 ) of the computer 1 not affected by the ambient temperature (that is, the Close loop state), and the computer 1 is affected by the ambient temperature (that is, the Open loop state). operating temperature (refer to Figure 4).

Referring to FIG. 3 , it is a flowchart of a computer heat dissipation control method in the Close loop state. In step S100, the parameter setting module 101 sets a temperature parameter (marked as "T_temp"), and makes the temperature parameter T_temp equal to the temperature standard deviation T_control. In addition, the parameter setting module 101 sets the first logical temperature T1, the second logical temperature T2, the first reference temperature T3, the second reference temperature T4 and the third reference temperature T5, wherein T3<T4<T5. For example, the user can set T1=0, T2=8, T3=T_control+5, T3=T_control+8 and T5=T_control+10 through the parameter setting module 101 .

In step S101, the temperature detection module 102 detects the working temperature of the CPU 40 (marked as "T_PECI") through the temperature sensor 30, and the working temperature is the actual temperature of the computer 1 in the working state. In step S102, the temperature detection module 102 determines whether the operating temperature T_PECI of the CPU 40 is greater than the sum of the control temperature T_control and the first logic temperature T1, that is, T_PECI>T_control+T1. If the working temperature T_PECI is greater than the sum of the control temperature T_control and the first logical temperature T1, go to step S103; otherwise, go to step S109.

In step S103, the temperature detection module 102 determines whether the working temperature T_PECI of the CPU 40 is greater than the first reference temperature T3, that is, T_PECI>T3, and whether the fan speed is the maximum speed. If the working temperature T_PECI is greater than the first reference temperature T3 and the fan speed is the highest speed, go to step S104 ; otherwise, go to step S105 .

Step S104, the adjustment module 103 reduces the operating frequency of the CPU 40. In this embodiment, when the operating temperature T_PECI is greater than the first reference temperature T3, the adjustment module 103 reduces the operating frequency of the CPU 40 by 30%, and when the operating temperature T_PECI is greater than the second reference temperature T4, the adjustment module 103 reduces the operating frequency of the CPU 40 The operating frequency is reduced by 70%; when the operating temperature T_PECI is greater than the third reference temperature T5, the adjustment module 103 reduces the operating frequency of the CPU 40 by 100%, so that the computer 1 is automatically shut down.

In step S105, the temperature detection module 102 determines whether the working temperature T_PECI is greater than the temperature parameter T_temp, that is, T_PECI>T_temp. If the working temperature T_PECI is greater than the temperature parameter T_temp, go to step S106; otherwise, go to step S101.

In step S106, the adjustment module 103 increases the fan speed to V1=PWM×a%, where PWM is the highest proportion of the fan speed. In step S107, the parameter setting module 101 sets the temperature parameter T_temp=T_PECI. In step S108, after the temperature detection module 102 delays for a first period of time d1, step S101 is executed to continue detecting the operating temperature T_PECI of the CPU 40 at the speed V1 of the fan 20 .

In step S109 , the temperature detection module 102 determines whether the working temperature T_PECI is smaller than the difference between the control temperature T_control and the second logic temperature T2 , that is, T_PECI<T_control−T2 . If the working temperature T_PECI is smaller than the difference between the control temperature T_control and the second logical temperature T2, execute step S110; otherwise, execute step S101.

In step S110, the adjustment module 103 reduces the fan speed to V2=PWM×b%. Step S111, after the temperature detection module 102 delays for a second period of time d2, execute step S101 to continue to detect the working temperature T_PECI of the CPU 40 at the speed V2 of the fan 20 .

In step S112 , the temperature detection module 102 determines whether the working temperature T_PECI is greater than the third reference temperature T5 , that is, T_PECI>T5. If the working temperature T_PECI is greater than the third reference temperature T5, go to step S115; otherwise, go to step S113.

In step S113 , the temperature detection module 102 determines whether the working temperature T_PECI is less than or equal to the second reference temperature T4 , that is, T_PECI≦T4. If the working temperature T_PECI is less than or equal to the second reference temperature T4, step S114 is executed. If the working temperature T_PECI is greater than the second reference temperature T4, step S104.

Step S114, the adjustment module 103 increases the operating frequency of the CPU 40. When the operating temperature T_PECI is greater than the third reference temperature T5, step S115, the adjustment module 103 sends a warning message that the operating temperature of the CPU 40 is too high to remind the user to shut down the computer 1 due to the high temperature.

Referring to FIG. 4, it is a flow chart of a computer heat dissipation control method in an Open loop state. In step S200, the parameter setting module 101 sets the ambient temperature range, that is, the highest ambient temperature value (marked as “T_high”) and the lowest ambient temperature value (marked as “T_low”). In step S201, the temperature detection module 102 detects the ambient temperature (marked as “Ta”) of the computer 1 and the operating temperature T_PECI of the CPU 40 through the temperature sensor 30 .

In step S202, the temperature detection module 102 determines whether the operating temperature T_PECI of the CPU 40 is greater than or equal to the highest ambient temperature value T_high+1, that is, T_PECI≥T_high+1. If the system temperature T is greater than or equal to the highest ambient temperature value T_PECI_high+1, execute step S203; otherwise, execute step S207.

In step S203, the temperature detection module 102 determines whether the operating temperature T_PECI of the CPU 40 is greater than the ambient temperature Ta, that is, T_PECI>Ta. If the operating temperature T_PECI of the CPU 40 is greater than the ambient temperature Ta, then step S204 is executed; otherwise, the process ends.

In step S204, the adjustment module 103 increases the fan speed to V3=PWM×c%. Step S205, the parameter setting module 101 sets the ambient temperature Ta equal to the working temperature T_PECI of the CPU 40, that is Ta=T_PECI. Step S206 , after the temperature detection module 102 delays for a third period of time d3 , execute step S201 to continue detecting the ambient temperature Ta and the working temperature T_PECI of the fan 20 at the speed V3 .

In step S207, the temperature detection module 102 determines whether the operating temperature T_PECI of the CPU 40 is less than or equal to the lowest ambient temperature value T_low-1, that is, T_PECI≤T_low-1. If the working temperature T_PECI is less than or equal to the lowest ambient temperature value T_low-1, execute step S208; otherwise, the process ends.

In step S208, the temperature detection module 102 determines whether the operating temperature T_PECI of the CPU 40 is lower than the ambient temperature Ta, that is, T_PECI<Ta. If the operating temperature T_PECI of the CPU 40 is lower than the ambient temperature Ta, execute step S209; otherwise, the process ends.

In step S209, the adjustment module 103 reduces the fan speed to V4=PWM×d%. In step S210, the parameter setting module 101 sets the ambient temperature Ta equal to the operating temperature T_PECI of the CPU 40, that is, Ta=T_PECI. Step S211 , after the temperature detection module 102 delays for a fourth period of time d4 , execute step S201 to continue detecting the ambient temperature Ta and the operating temperature T_PECI of the CPU 40 detected by the fan 20 at the speed V4 .

Finally, it should be noted that the system temperature of the computer 1 includes the temperature of the CPU 40, the memory 50, or the operating temperature of other internal electronic components, and the present invention only uses the operating temperature of the CPU 40 as the system temperature of the computer 1. Therefore, other electronic components with heat-generating performance inside the computer 1, such as memory 50, north-south bridge chips, etc., can use the computer heat dissipation control system and method of the present invention to achieve the effect of adjusting the temperature of the computer system.

Claims (10)

1. a computer to dissipate heat control system is installed and is run in the computing machine, and this computing machine comprises CPU, fan and temperature sensor, it is characterized in that, this system comprises:

Parameter is provided with module, and the temperature standard that is used to be provided with CPU is poor, the first logic temperature and the second logic temperature;

The temperature detecting module is used for detecting by temperature sensor the working temperature of CPU, and, first logic temperature poor according to temperature standard and the second logic temperature are judged the whether needs adjustment of working temperature of CPU;

Adjustment module is used for when the working temperature of CPU need be adjusted, by regulating rotation speed of the fan and the frequency of operation of the CPU working temperature of adjusting CPU of fan under different operation modes.

2. computer to dissipate heat control system as claimed in claim 1 is characterized in that, described parameter is provided with module and also is used to be provided with first reference temperature, second reference temperature, the 3rd reference temperature and ambient temperature range.

3. computer to dissipate heat control system as claimed in claim 2 is characterized in that, whether described temperature detecting module also is used in the working temperature of the computing machine CPU of judging influenced by ambient temperature in ambient temperature range.

4. computer to dissipate heat control system as claimed in claim 2 is characterized in that, when described adjustment module also is used for working temperature as CPU greater than the 3rd reference temperature, sends the too high caution message of working temperature of CPU.

5. computer to dissipate heat control system as claimed in claim 1 is characterized in that, described fan running pattern comprises preset mode, efficiency mode, silent mode and energy saver mode.

6. computer to dissipate heat control method, this computing machine comprises CPU, fan and temperature sensor, it is characterized in that, the method comprising the steps of:

The temperature standard that CPU is set is poor, the first logic temperature and the second logic temperature;

Working temperature by temperature sensor detecting CPU;

, the first logic temperature poor according to temperature standard and the second logic temperature are judged the whether needs adjustment of working temperature of CPU;

When the working temperature of CPU need be adjusted, by regulating rotation speed of the fan and the frequency of operation of the CPU working temperature of adjusting CPU of fan under different operation modes.

7. computer to dissipate heat control method as claimed in claim 6 is characterized in that, this method also comprises step:

First reference temperature, second reference temperature, the 3rd reference temperature and ambient temperature range are set.

8. computer to dissipate heat control method as claimed in claim 7 is characterized in that, this method also comprises step:

Influenced by ambient temperature down at computing machine, whether the working temperature of judging CPU is in ambient temperature range.

9. computer to dissipate heat control method as claimed in claim 7 is characterized in that, this method also comprises step:

When the working temperature of CPU during, send the too high caution message of working temperature of CPU greater than the 3rd reference temperature.

10. computer to dissipate heat control method as claimed in claim 7 is characterized in that, described fan running pattern comprises preset mode, efficiency mode, silent mode and energy saver mode.

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