CN100383700C - Method for controlling temperature inside computers - Google Patents
Method for controlling temperature inside computers Download PDFInfo
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- CN100383700C CN100383700C CNB2004100079128A CN200410007912A CN100383700C CN 100383700 C CN100383700 C CN 100383700C CN B2004100079128 A CNB2004100079128 A CN B2004100079128A CN 200410007912 A CN200410007912 A CN 200410007912A CN 100383700 C CN100383700 C CN 100383700C
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Abstract
The present invention discloses a method for controlling the temperature in a computer, which comprises the steps: in step A, the temperature control switching temperature, and the rotary speed of a CPU fan and the rotary speed of a system fan are determined, wherein the rotary speed of a CPU fan and the rotary speed of a system fan correspond to the temperature control switching temperature; in step B, the temperature in a computer is obtained; if the current temperature of a CPU is higher than the temperature control switching temperature, the rotary speed of the CPU fan is constantly equal to the rotary speed of the CPU fan, wherein the rotary speed of the CPU fan corresponds to the temperature control switching temperature; the rotary speed of the system fan is regulated between the rotary speed of the system fan and the highest rotary speed of the system fan so as to realize temperature control, wherein the rotary speed of the system fan corresponds to the temperature control switching temperature; if the current temperature of the CPU is lower than the temperature control switching temperature, the rotary speed of the system fan is constantly equal to the rotary speed of the system fan, wherein the rotary speed of the system fan corresponds to the temperature control switching temperature; the rotary speed of the CPU fan is regulated between the lowest rotary speed of the CPU fan and the rotary speed of the CPU fan so as to realize temperature control, wherein the rotary speed of the CPU fan corresponds to the temperature control switching temperature.
Description
Technical field
The invention belongs to the Computer Applied Technology field, relate in particular to the temperature-controlled process in a kind of computing machine.
Background technology
Current, computing machine is universal day by day, and development of computer is maked rapid progress especially, and the temperature control problem of computer-internal is the major issue of can not ignore in the technical development of computer process all the time.
In the prior art, in order to solve temperature control problem, adopt central processing unit (CPU) fan and system fan to carry out the temperature control of computer-internal simultaneously, the temperature control of computer-internal is in time reduced the heat of computer-internal by these two fans.Yet, after further using system fan carries out temperature control in the computing machine,, therefore, make noise raising in the temperature control process because this system fan itself can produce noise.
Reduce noise though adopted in the prior art in the temperature control process by regulating system fan and/or cpu fan rotating speed,, these prior aries are not considered following two problems in the process of carrying out temperature control by the adjusting rotation speed of the fan:
(1) level of noise after system fan noise source and the cpu fan noise source mutual superposition and this two noise sources mutual relationship between the level of noise separately:
From acoustics, when the level of noise of two noise sources very near the time, then the level of noise after the stack can increase by 3～4dBA than the level of noise of independent noise source, and differ 5～7dBA when above when the level of noise of two noise sources, two synthetic noises of noise source are similar to two those noise sources that the level of noise in the noise source is bigger, in the case, the less noise source of level of noise can be ignored for the influence of the level of noise after superposeing; Utilize Principles of Acoustics as above, if the difference of system fan and two levels of noise that noise source sent of cpu fan can be controlled at more than 5～7dBA, then obviously can reduce the level of noise after the stack, reduce noise effect, but do not consider in the prior art that as above Principles of Acoustics carry out temperature control, thereby can't reach the purpose that reduces the level of noise that in the temperature control process, superposes by these Principles of Acoustics;
(2) rotation speed of the fan increases the influence for fan noise and radiating effect:
For aerofoil fan commonly used, the increase of rotation speed of the fan can make the noise that this fan produced increase with respect to rotation speed of the fan with exponential relationship, therefore, in the temperature control process, when rotation speed of the fan is adjusted to when very high, can make that the noise that this fan produced is very high, thus the influence of restive noise; In addition, system fan and cpu fan all are limited for the influence of computer to dissipate heat effect, after rotation speed of the fan reaches certain limit, the rotating speed that improves fan again will can not bring the obvious improvement of radiating effect, thereby can't obtain corresponding radiating effect by improving rotation speed of the fan; The temperature control method of prior art also reckons without this problem, thus the problem that is easy to cause aforesaid restive noise effect and can not obtains corresponding radiating effect by improving rotation speed of the fan.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide the temperature-controlled process in a kind of computing machine, this method can be utilized the theory of noise stack in the Principles of Acoustics and consider that rotation speed of the fan increases the influence for fan noise and radiating effect, select suitable cpu fan rotating speed and system fan rotating speed, thereby reach the optimization of computer temperature-control effect and noise.
For achieving the above object, the invention provides the temperature-controlled process in a kind of computing machine, this method may further comprise the steps:
Steps A: determine temperature control switching temperature and cpu fan rotating speed and the system fan rotating speed corresponding with this temperature control switching temperature, determining of this temperature control switching temperature is feasible: when the computer-internal temperature is lower than this temperature control switching temperature, the system fan invariablenes turning speed is the system fan rotating speed of described temperature control switching temperature correspondence, regulate the cpu fan rotating speed and obtain the noise minimum that identical radiating effect produces, when the computer-internal temperature is higher than this temperature control switching temperature, the cpu fan invariablenes turning speed is the cpu fan rotating speed of described temperature control switching temperature correspondence, and the regulating system rotation speed of the fan obtains the noise minimum that identical radiating effect produces;
Step B: obtain the computer-internal temperature, described computer-internal temperature is the CPU Current Temperatures, if the CPU Current Temperatures is greater than described temperature control switching temperature, then the cpu fan invariablenes turning speed is the cpu fan rotating speed of temperature control switching temperature correspondence, regulating system rotation speed of the fan between the maximum speed of the system fan rotating speed of temperature control switching temperature correspondence and system fan is to realize temperature control; If the CPU Current Temperatures is less than described temperature control switching temperature, then the system fan invariablenes turning speed is the system fan rotating speed of temperature control switching temperature correspondence, between the cpu fan rotating speed of cpu fan minimum speed and temperature control switching temperature correspondence, regulate the cpu fan rotating speed, to realize temperature control.
Wherein, described definite temperature control switching temperature of steps A and cpu fan rotating speed and the system fan rotating speed corresponding with this temperature control switching temperature comprise:
System fan is carried out temperature control with the definite value rotating speed of a setting, cpu fan carries out temperature control with changing rotating speed, depict a curve representing the computer-internal temperature under this kind temperature control and produce the relation of noise, change into the definite value rotating speed that the system fan rotating speed sets, repeat this step, up to the curvilinear system 1 that obtains to comprise at least two described curves;
Cpu fan carries out temperature control with the definite value rotating speed of a setting, system fan is carried out temperature control with changing rotating speed, depict a curve representing the computer-internal temperature under this kind temperature control and produce the relation of noise, change into the definite value rotating speed that the cpu fan rotating speed sets, repeat this step, up to the curvilinear system 2 that obtains to comprise at least two described curves;
In the same coordinate system, from curvilinear system 1 and curvilinear system 2, determine a curve respectively, these two curves are respectively in temperature-control range separately, reaching under the same computer-internal temperature conditions, produce two curves of minimum noise, with the computer-internal temperature of the intersection point correspondence of these two curves as described temperature control switching temperature, with the cpu fan rotating speed of this intersection point correspondence and system fan rotating speed cpu fan rotating speed and system fan rotating speed as described temperature control switching temperature correspondence.
Wherein, the adjustment of described system fan and cpu fan rotating speed or be set at adjustment within this system fan and the cpu fan range of speeds.
Wherein, before the described step B, this method further comprises:
Determine described cpu fan minimum speed and system fan maximum speed according to system noise and heat radiation.
Wherein, step B described in temperature control switching temperature correspondence the system fan rotating speed and the maximum speed of system fan between the regulating system rotation speed of the fan be:
Regulate rotating speed according to the linear relationship between the maximum speed of the system fan rotating speed of temperature control switching temperature correspondence and system fan;
The described cpu fan rotating speed of regulating between the cpu fan rotating speed of cpu fan minimum speed and temperature control switching temperature correspondence of step B is:
Regulate rotating speed according to the linear relationship between the cpu fan rotating speed of cpu fan minimum speed and temperature control switching temperature correspondence.
Wherein, step B further comprises:
Judge that the CPU Current Temperatures is whether less than the lower limit temperature of predefined CPU, if then cpu fan carries out temperature control with its minimum speed.
Wherein, step B further comprises:
Judge that the CPU Current Temperatures is whether greater than the ceiling temperature of predefined CPU, if then system fan is carried out temperature control with its maximum speed.
As seen, the present invention has following beneficial effect:
Because when cpu temperature is low, the fixed system rotation speed of the fan carries out temperature control by adjusting the cpu fan rotating speed in the present invention, therefore, aspect temperature control, the raising of CPU rotating speed can directly cause the raising of flowing through air quantity on the CPU radiating fin, thereby improved radiating effect, help the realization of temperature control, and, because the total heat dissipation capacity of CPU this moment is little, so even the system fan rotating speed is fixed on a lower value, the intake of system also is that enough heat radiation needs; Aspect noise, because the system fan diameter is much larger than the CPU radiator fan, so under all lower prerequisite of these two rotation speeds of the fan, the noise of system fan has determined the complete machine level of noise, so the rotating speed of adjusting cpu fan to the influence of noise much smaller than increasing the system fan rotating speed, thereby can reduce noise with respect to other temperature control scheme, reduce the influence of noise;
Along with cpu temperature raises, the cpu fan rotating speed improves constantly, can bring 2 problems if continue to improve the cpu fan rotating speed: the one, the noise of cpu fan can increase a lot, the 2nd, because the CPU thermal value improves constantly, temperature is very high in the system, the cpu fan inaccessible required radiating effect that dispels the heat, so, the present invention is after the temperature of CPU arrives the temperature control switching temperature, the cpu fan rotating speed is fixed on a tachometer value no longer to be improved, and beginning Adjustment System rotation speed of the fan, this moment, the raising of system fan rotating speed brought 2 benefits, aspect heat radiation, increased the system ventilation amount, reduce the CPU EAT, thereby the reduction cpu temperature is aspect noise, because this moment, the cpu fan noise was very big, the cpu fan noise has determined system noise, will be much smaller than increasing the noise effect that the CPU radiating fan rotation speed brings for the influence of noise so increase the system fan rotating speed again;
In sum, temperature control method provided by the present invention can be when satisfying the heat radiation needs, produce minimum noise, thereby reach in the temperature control process good control to noise, the good combination of rotation speed of the fan and radiating effect in the realization temperature control, the temperature control strategy simple possible of this method is easy to promote the use of.
Description of drawings
Fig. 1 carries out the process flow diagram of temperature control for the embodiment of the invention.
Fig. 2 carries out the resulting temperature control curve figure of temperature control test experiments in the embodiment of the invention.
Fig. 3 is in the embodiment of the invention, the synoptic diagram of each temperature-control range internal fan speed setting.
Fig. 4 is for being used for determining the temperature control curve figure of temperature control switching temperature in the embodiment of the invention.
Embodiment
The present invention is the temperature-controlled process in a kind of computing machine, the selected at first by experiment temperature control switching temperature of this method, delimit different temperature-control range according to this temperature control switching temperature then, in different temperature-control range, control the rotating speed of cpu fan and the rotating speed of system fan respectively, to reach the optimization of radiating effect and level of noise.
Describe the present invention below in conjunction with accompanying drawing.In following examples, all be with the temperature of CPU surface temperature as computer-internal, in other embodiment of the present invention, the temperature that yet can adopt the computer-internal other parts does not influence realization of the present invention as the computer-internal temperature.
Referring to Fig. 1, the present invention realizes that the heat radiation of computing machine needs following steps:
Step 101:, determine the temperature control switching temperature by repeatedly experiment;
Step 102: utilize this temperature control switching temperature, and the bound temperature that sets for CPU, determine temperature-control range;
Step 103: judge the residing temperature-control range of CPU Current Temperatures, according to selected respectively cpu fan rotating speed of the temperature control rule that each temperature-control range is set and system fan rotating speed, cpu fan and system fan are according to the temperature control of selected rotating speed realization to computing machine.
Below in conjunction with instantiation the specific implementation of above-mentioned steps is described in detail.
In step 101, determine temperature control switching temperature TA by repeatedly testing, its specific implementation is:
Carry out the temperature control test for a station symbol semicomputer system, in this test, represent temperature in the computing machine with the surface temperature Tcase of CPU, with the expression radiating effect, represent noise effect with the complete machine level of noise that measures, and test result is presented in the coordinate diagram shown in Figure 2, the horizontal ordinate of this coordinate diagram is Tcase, ordinate is a level of noise, and this test comprises:
(1) system fan invariablenes turning speed changes the test of cpu fan rotating speed:
With the system fan speed setting is a fixed value Rs1, in test process, system fan is rotated with this constant rotational speed Rs1, the rotating speed of cpu fan then constantly changes, measure CPU surface temperature Tcase and level of noise under the different CPU rotation speed of the fan respectively, with each Tcase and corresponding with it level of noise respectively as horizontal ordinate, in Fig. 2, obtain interrupted a plurality of coordinate points, these coordinate points are coupled together, form a temperature control curve 21, when this temperature control curve 21 is Rs1 in order to expression system fan invariablenes turning speed, radiating effect that adjusting cpu fan rotating speed is obtained and the relation between the level of noise; The system fan rotating speed is set at Rs2 and Rs3 respectively, repeat above-mentioned test process respectively, in Fig. 2, obtain two other temperature control curve 22 and 23, when these two temperature control curves 22 and 23 represent that respectively the system fan invariablenes turning speed is Rs2 and Rs3, radiating effect that adjusting cpu fan rotating speed is obtained and the relation between the level of noise;
(2) cpu fan invariablenes turning speed changes the test of system fan rotating speed:
With the cpu fan speed setting is a fixed value Rc1, in test process, cpu fan rotates with this constant rotational speed Rc1, the rotating speed of system fan then constantly changes, measure CPU surface temperature Tcase and level of noise under the different system rotation speed of the fan respectively, with each Tcase and corresponding with it level of noise respectively as horizontal ordinate, in Fig. 2, obtain interrupted a plurality of coordinate points, these coordinate points are coupled together, form a temperature control curve 24, when this temperature control curve 24 is Rc1 in order to expression cpu fan invariablenes turning speed, radiating effect that the regulating system rotation speed of the fan is obtained and the relation between the level of noise; The cpu fan rotating speed is set at Rc2 and Rc3 respectively, repeat above-mentioned test process respectively, in Fig. 2, obtain two other temperature control curve 25 and 26, when these two temperature control curves 25 and 26 represent that respectively the cpu fan invariablenes turning speed is Rc2 and Rc3, radiating effect that the regulating system rotation speed of the fan is obtained and the relation between the level of noise;
According to above-mentioned test, determine the temperature control switching temperature, its specific implementation is:
Choose temperature control curve 21 and temperature control curve 24, get these two temperature control curves intersection point A as the temperature control switching point, the Tcase of this intersection point A correspondence is temperature control switching temperature TA, and the pairing cpu fan rotating speed of this TA Rcf is Rc1, and the pairing system fan rotating speed of this TA Rsf is Rs1; Selection TA is that the reason of temperature control switching temperature is:
As seen from Figure 2, under identical heat-sinking capability, under the situation of just corresponding identical Tcase, at the right-hand part that A is ordered, the noise of curve 21 is minimum, and in left side that A is ordered, the noise of curve 24 is minimum, thus, and in order under identical heat-sinking capability, to obtain minimum level of noise, trade-off curve 21 and curve 24, and with the pairing TA of intersection point A of these two curves as the temperature control switching temperature;
Wherein, in this step 101, the adjustment of described system fan and cpu fan rotating speed or setting are the adjustment within this system fan and the cpu fan range of speeds.
In step 102, utilize determined temperature control switching temperature in step 101, and the bound temperature that sets for CPU, determine temperature-control range, in the embodiment of the invention, the bound temperature of CPU is respectively Tmix and Tmax, determines that thus the temperature-control range that obtains comprises:
For cpu fan:
Temperature-control range 1:Tcase＜Tmin;
Temperature-control range 2:Tmin＜Tcase＜TA;
Temperature-control range 3:Tcase＞TA;
For system fan:
Temperature-control range 4:Tcase＜TA;
Temperature-control range 5:TA＜Tcase＜Tmax;
Temperature-control range 6:Tcase＞Tmax;
Wherein, in the embodiment of the invention, the purpose of setting the bound temperature of CPU is: make that when Tcase＜Tmin cpu fan is with its minimum speed operation, and no longer carry out the linearity adjustment of rotating speed according to the interior temperature control mode of Tmin＜Tcase＜TA scope; And when Tcase＞Tmax, then system fan is with its maximum speed operation, and no longer carries out the linearity adjustment of rotating speed according to the temperature control mode in TA＜Tcase＜Tmax scope; Like this, can avoid in cpu fan rotating speed and system fan rotational speed regulation process, adjust to rotation speed of the fan above its maximum speed or be lower than the generation of the problem of its minimum speed;
In step 103, read the Current Temperatures of CPU, judge the temperature-control range that the cpu temperature read belongs to, determine temperature-control range after, according to the speed setting of this temperature-control range, adjust cpu fan rotating speed or system fan rotating speed to cpu fan and system fan; Wherein, referring to Fig. 3, set at the rotation speed of the fan of each temperature-control range and to be respectively:
For cpu fan:
Temperature-control range 1, Tcase＜Tmin:CPU rotation speed of the fan are its minimum speed Rcmin;
Temperature-control range 2, the linear adjusting between the cpu fan rotating speed Rc1 of its minimum speed Rcmin and temperature switching point correspondence of Tmin＜Tcase＜TA:CPU rotation speed of the fan, this linear regulation can be carried out according to the linear relationship between the cpu fan rotating speed of cpu fan minimum speed and temperature control switching temperature correspondence;
Temperature-control range 3, Tcase＞TA:CPU rotation speed of the fan is Rc1;
For system fan:
Temperature-control range 4, Tcase＜TA: the system fan rotating speed is the system fan rotating speed Rs1 of temperature switching point correspondence;
Temperature-control range 5, TA＜Tcase＜Tmax: the linear adjusting between the rotating speed Rs1 of its temperature switching point correspondence and its maximum speed Rsmax of system fan rotating speed, this linear regulation can be carried out according to the linear relationship between the maximum speed of the system fan rotating speed of temperature control switching temperature correspondence and system fan;
Temperature-control range 6, Tcase＞Tmax: the system fan rotating speed is its maximum speed Rsmax;
Wherein, aforesaid cpu fan minimum speed Rcmin and system fan maximum speed Rsmax can determine according to noise, the heat radiation situation of system's reality, it determines that method those skilled in the art need not creative work and can realize, and the mode of determining does not influence realization of the present invention yet.
Referring to Fig. 4, Fig. 4 is the synoptic diagram of temperature control curve 21 shown in Figure 2 and 24, and the basis of carrying out as above temperature-control range setting is:
With the point of the TA among Fig. 4 is the boundary, analysis according to the front, because under the situation of corresponding identical Tcase, the noise of A point right-hand part curve 21 is minimum, the noise of the left side curve 24 that A is ordered is minimum, therefore, the left side of the right-hand part of trade-off curve 21 and curve 24 and A point itself constitutes a new curve, this curve is as the foundation that is optimized temperature control, wherein, the part of this curve on the left of the A point is because the temperature of its corresponding horizontal ordinate is low, so heat-sinking capability is strong, and this curve in the part on A point right side because the temperature height of its corresponding horizontal ordinate, so heat-sinking capability is poor;
Thus, when CPU surface temperature Tcase＜TA, this moment is because the CPU surface temperature is not high, therefore select the temperature control curve section of heat-sinking capability difference can realize heat radiation, therefore select the part of this curve on A point right side, this section curve representation: system fan remains the system fan rotating speed Rs1 that A is ordered, and the cpu fan rotating speed is adjusted between its Rcmin and Rc1 according to Tcase; And when CPU surface temperature Tcase＞TA, this moment is because CPU surface temperature height, therefore select the strong temperature control curve section of heat-sinking capability can realize heat radiation, therefore select the part of this curve in A point left side, this section curve representation: the cpu fan rotating speed remains the cpu fan rotating speed Rc1 that A is ordered, and the system fan rotating speed is adjusted between its Rs1 and Rsmax.
Method by while regulating system fan and cpu fan realization heat radiation provided by the present invention has following advantage:
(1) be compared to and utilize a fan to carry out temperature control and the method for the constant realization of another rotation speed of the fan heat radiation:
Because the present invention is when cpu temperature is lower than temperature control switching temperature TA, adopt to regulate the cpu fan rotating speed and the changeless mode of system fan rotating speed realizes temperature control, referring to Fig. 2, owing to be the temperature control that the right-hand part according to curve 21 carries out in the case, therefore can obtain littler noise than the represented temperature control method of other temperature control curve; And when cpu temperature is higher than temperature control switching temperature TA, adopt the regulating system rotation speed of the fan and the changeless mode of cpu fan rotating speed realizes temperature control, referring to Fig. 2, owing to be the temperature control of carrying out according to the left side of curve 24 in the case, therefore can obtain littler noise than the represented temperature control method of other temperature control curve; Vertical the above, scheme provided by the present invention one of fan is carried out temperature control and the method for the constant realization heat radiation of another rotation speed of the fan, can reduce noise effectively, reduces the influence of noise;
(2) utilize cpu fan and the system fan that is compared to other realizes the method for heat radiation:
Referring to Fig. 2, because the present invention is in the process of carrying out temperature control, choosing curve 21 is positioned at right-hand part that A orders and curve 24 and is positioned at A point left side and carries out temperature control, therefore, to for temperature control according to two fans that other temperature control curve carried out, the noise minimum that the present invention can produce in the temperature control process helps avoiding the influence of noise.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the temperature-controlled process in the computing machine is characterized in that this method may further comprise the steps:
Steps A: determine temperature control switching temperature and cpu fan rotating speed and the system fan rotating speed corresponding with this temperature control switching temperature, determining of this temperature control switching temperature is feasible: when the computer-internal temperature is lower than this temperature control switching temperature, the system fan invariablenes turning speed is the system fan rotating speed of described temperature control switching temperature correspondence, regulate the cpu fan rotating speed and obtain the noise minimum that identical radiating effect produces, when the computer-internal temperature is higher than this temperature control switching temperature, the cpu fan invariablenes turning speed is the cpu fan rotating speed of described temperature control switching temperature correspondence, and the regulating system rotation speed of the fan obtains the noise minimum that identical radiating effect produces;
Step B: obtain the computer-internal temperature, described computer-internal temperature is the CPU Current Temperatures, if the CPU Current Temperatures is greater than described temperature control switching temperature, then the cpu fan invariablenes turning speed is the cpu fan rotating speed of temperature control switching temperature correspondence, regulating system rotation speed of the fan between the maximum speed of the system fan rotating speed of temperature control switching temperature correspondence and system fan is to realize temperature control; If the CPU Current Temperatures is less than described temperature control switching temperature, then the system fan invariablenes turning speed is the system fan rotating speed of temperature control switching temperature correspondence, between the cpu fan rotating speed of cpu fan minimum speed and temperature control switching temperature correspondence, regulate the cpu fan rotating speed, to realize temperature control.
2. method according to claim 1 is characterized in that, described definite temperature control switching temperature of steps A and cpu fan rotating speed and the system fan rotating speed corresponding with this temperature control switching temperature comprise:
System fan is carried out temperature control with the definite value rotating speed of a setting, cpu fan carries out temperature control with changing rotating speed, depict a curve representing the computer-internal temperature under this kind temperature control and produce the relation of noise, change into the definite value rotating speed that the system fan rotating speed sets, repeat this step, up to the curvilinear system 1 that obtains to comprise at least two described curves;
Cpu fan carries out temperature control with the definite value rotating speed of a setting, system fan is carried out temperature control with changing rotating speed, depict a curve representing the computer-internal temperature under this kind temperature control and produce the relation of noise, change into the definite value rotating speed that the cpu fan rotating speed sets, repeat this step, up to the curvilinear system 2 that obtains to comprise at least two described curves;
In the same coordinate system, from curvilinear system 1 and curvilinear system 2, determine a curve respectively, these two curves are respectively in temperature-control range separately, reaching under the same computer-internal temperature conditions, produce two curves of minimum noise, with the computer-internal temperature of the intersection point correspondence of these two curves as described temperature control switching temperature, with the cpu fan rotating speed of this intersection point correspondence and system fan rotating speed cpu fan rotating speed and system fan rotating speed as described temperature control switching temperature correspondence.
3. method according to claim 2 is characterized in that, the adjustment of described system fan and cpu fan rotating speed or be set at adjustment within this system fan and the cpu fan range of speeds.
4. method according to claim 1 is characterized in that, before the described step B, this method further comprises:
Determine described cpu fan minimum speed and system fan maximum speed according to system noise and heat radiation.
5. method according to claim 1 is characterized in that, step B described in temperature control switching temperature correspondence the system fan rotating speed and the maximum speed of system fan between the regulating system rotation speed of the fan be:
Regulate rotating speed according to the linear relationship between the maximum speed of the system fan rotating speed of temperature control switching temperature correspondence and system fan;
The described cpu fan rotating speed of regulating between the cpu fan rotating speed of cpu fan minimum speed and temperature control switching temperature correspondence of step B is:
Regulate rotating speed according to the linear relationship between the cpu fan rotating speed of cpu fan minimum speed and temperature control switching temperature correspondence.
6. method according to claim 1 is characterized in that step B further comprises:
Judge that the CPU Current Temperatures is whether less than the lower limit temperature of predefined CPU, if then cpu fan carries out temperature control with its minimum speed.
7. method according to claim 1 is characterized in that step B further comprises:
Judge that the CPU Current Temperatures is whether greater than the ceiling temperature of predefined CPU, if then system fan is carried out temperature control with its maximum speed.
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| CNB2004100079128A CN100383700C (en) | 2004-03-05 | 2004-03-05 | Method for controlling temperature inside computers |
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| CNB2004100079128A CN100383700C (en) | 2004-03-05 | 2004-03-05 | Method for controlling temperature inside computers |
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| CN102348365B (en) * | 2010-08-03 | 2016-06-01 | 联想(北京)有限公司 | A kind of method, device and rack that cabinet temperature is adjusted |
| CN104899109B (en) * | 2015-05-06 | 2018-03-06 | 深圳市同泰怡信息技术有限公司 | A kind of method that cpu temperature is obtained under operating system |
| CN111720352B (en) * | 2019-03-19 | 2022-07-15 | 西安诺瓦星云科技股份有限公司 | Fan control method, device and system |
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|---|---|---|---|---|
| CN2499892Y (en) * | 2001-09-19 | 2002-07-10 | 刘宏彩 | Random temperature control radiator for computer host |
| JP2002196841A (en) * | 2000-12-25 | 2002-07-12 | Nec Yonezawa Ltd | Personal computer |
| CN1412646A (en) * | 2001-10-19 | 2003-04-23 | 联想(北京)有限公司 | Computer temperature control device and method |
| CN2583713Y (en) * | 2002-11-06 | 2003-10-29 | 陈荣义 | Computer having temperature contro and airspeed regulation external equipment |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002196841A (en) * | 2000-12-25 | 2002-07-12 | Nec Yonezawa Ltd | Personal computer |
| CN2499892Y (en) * | 2001-09-19 | 2002-07-10 | 刘宏彩 | Random temperature control radiator for computer host |
| CN1412646A (en) * | 2001-10-19 | 2003-04-23 | 联想(北京)有限公司 | Computer temperature control device and method |
| CN2583713Y (en) * | 2002-11-06 | 2003-10-29 | 陈荣义 | Computer having temperature contro and airspeed regulation external equipment |
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