CN1622046A - Method of heat radiation for CPU in computer system - Google Patents
Method of heat radiation for CPU in computer system Download PDFInfo
- Publication number
- CN1622046A CN1622046A CN 200310112264 CN200310112264A CN1622046A CN 1622046 A CN1622046 A CN 1622046A CN 200310112264 CN200310112264 CN 200310112264 CN 200310112264 A CN200310112264 A CN 200310112264A CN 1622046 A CN1622046 A CN 1622046A
- Authority
- CN
- China
- Prior art keywords
- temperature
- processing unit
- central processing
- fan
- reference value
- 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.)
- Pending
Links
Images
Abstract
The CPU heat dissipation controlling method for computer system includes detecting the practical temperature of the CPU with one temperature sensor; comparing the practical temperature with one minimum temperature reference, one maximum temperature reference, one initial frequency lowering temperature and one final frequency lowering temperature separately; stopping the fan when the practical temperature is lower than the minimum temperature reference; regulating the rotation speed of the fan proportionally with the practical temperature when the practical temperature is lower than the maximum temperature reference; controlling the fan to rotate at highest rotation speed when the practical temperature is higher than the maximum temperature reference; and lowering the clock frequency from the clock generator to the CPU until the practical temperature is lower than the final frequency lowering temperature when the practical temperature is higher than the initial frequency lowering temperature.
Description
Technical field
The invention relates to a kind of heat dissipation technology of computer system, be meant central processor cooling control method among a kind of computer system especially.
Background technology
At a computer installation or in, can operate under the suitable working temperature generally all essential configuration one heat abstractor in order to make central processing unit with the system of central processing unit as the basis.The easiest heat abstractor of use is to adopt a fan motor to drive a flabellum to produce the required air-flow of heat radiation at present.
In the central processor heat dissipation technology, mainly be to adopt a radiator fan to be installed on the heat radiator of central processing unit among tradition, continue fixing forced heat radiation air-flow so that this fan produces, the heat energy that central processing unit is produced is able to dissipation.But this kind traditional heat-dissipating technology, radiating airflow can only merely be provided, and can't regulate the rotating speed of radiator fan according to the actual heat that is produced of this central processing unit, therefore the rotating speed that has a fan can't cooperate the generation of actual heat and be regulated, no matter that is the temperature of central processing unit why, the rotating speed of its fan is all fixing, so also makes the entire heat dissipation system waste many meaningless electric power.If this kind heat dissipation technology when being applied in portable computer or notebook computer, will reduce the power-on time of battery.
In order to overcome the heat dissipation technology of above-mentioned continuous schedule, there is the dealer to design the radiating control technology of staged, it mainly is that temperature is divided into for example five default stratum, when the central processing unit temperature is higher or lower than a stratum, promptly improve or reduce the rotating speed of fan, it is constant that the rotating speed of this aft-fan will be kept constant speed, when central processor temperature is higher or lower than another stratum once more, just rotation speed of the fan is improved or reduces.The method of this staged control rotation speed of the fan, the rotating speed drop height when the conversion of rotation speed of the fan stratum, the noise that will be produced in the time of will highlighting the fan speed conversion.In addition, in the radiating control technology of this staged, it is in a certain stratum, fan is maintained fixed rotating speed, this mode is the temperature that contains a scope with high air mass flow, and then with another more high wind speed heat radiation, this method can't average out a little between temperature and rotation speed of the fan after temperature is higher than this scope, to make that virtually fan consumes more electric energy, reduce the battery-powered time of portable computer or mobile computer.
Moreover, at central processor under the Multi-Tasking environment or among the heavily loaded duty, its heat production rate is generally all quite high, often its heat production rate can be higher than the heat-sinking capability of fan, even at maximum speed, also the heat that can't central processing unit be produced obtains suitable distributing with the speed setting of fan.At this moment, except the control of rotation speed of the fan, other adequate measure should be additionally taked, the normal operation of central processing unit can be effectively guaranteed.
Summary of the invention
Edge this, the present invention's fundamental purpose promptly is at the disappearance of aforementioned located by prior art and the demand of reality, and develop a kind of low noise central processing unit heat dissipation technology of computer system, its mode with linearity control speed is controlled the rotating speed of fan, the noise that is produced because of the rotating speed drop in the time of so can reducing the rotation speed of the fan conversion.
Another object of the present invention provides a kind ofly can save central processor cooling control method among the power consumption, this cooling control method is adjusted rotation speed of the fan with direct proportion, with the rotating speed of direct proportion ground control fan, can avoid meaningless power wastage in response to the actual heat production rate of central processing unit.
Another object of the present invention provides central processor cooling control method among a kind of computer system, this cooling control method is adjusted the rotation speed of the fan except comprising with direct proportion, more comprise with the frequency reducing control mode, heat production rate at central processing unit surpasses under the heat-sinking capability, frequency of operation with frequency reducing is supplied to central processing unit, and the central processing unit generation is overheated down to prevent heavy duty.
In order to reach above-mentioned purpose, preestablish in the preferred embodiment of the present invention that a minimum temperature reference value, a maximum temperature reference value, a frequency reducing open the beginning temperature value and a frequency reducing stops temperature value.By the actual temperature of temperature sensor detecting central processing unit, again the beginning temperature value opened in this central processing unit actual temperature and aforementioned minimum temperature reference value, maximum temperature reference value, frequency reducing, reach frequency reducing and stop temperature value and make comparisons respectively.When this central processor temperature when relatively being lower than this minimum temperature reference value, stop the rotation of this fan.When this central processing unit actual temperature is lower than this maximum temperature reference value, adjust this rotation speed of the fan with direct proportion according to this central processing unit actual temperature.When this central processor temperature is higher than this maximum temperature reference value, controls this fan and rotate with maximum speed.Open the beginning during temperature value when this central processing unit actual temperature is higher than this frequency reducing, reduce the work time pulse frequency that this clock pulse generator is supplied to central processing unit, be lower than this frequency reducing until this central processing unit actual temperature and stop temperature value.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing:
Fig. 1 is the connection diagram of each associated components of preferred embodiment of the present invention;
Fig. 2 is the present invention's control flow chart;
Fig. 3 is the present invention's the rotation speed of the fan and the curve map of central processor temperature relation;
Fig. 4 is the rotation speed of the fan of another alternate embodiment of the present invention and the curve map of central processor temperature relation.
Embodiment
At first consult shown in Figure 1, it is for the control circuit calcspar of preferred embodiment of the present invention, it is to dispose a temperature sensor 2 on central processor 1 among the computer installation, can detect this central processing unit 1 actual temperature at work by this temperature sensor 2.This temperature sensor 2 can be via an amplifier 21, an analog-to-digital converter 22 (A/D Converter) and is connected to a controller 3, so that central processing unit actual temperature Tcpu is sent in this controller 3.This controller 3 can have been preestablished that beginning temperature value Ton is opened in a minimum temperature reference value Tmin, a maximum temperature reference value Tmax, a frequency reducing, a frequency reducing stops temperature value Toff by the user.
Controller 3 can be sent rotation speed of the fan control signal SG 1 by an output terminal when receiving this central processing unit actual temperature Tcpu, this signal can be controlled the rotating speed of fan motor 42 via a fan drive circuit 41, and then the rotating speed of control fan 4.When the application of reality, this fan 4 and fan motor 42 can adopt the aerofoil fan of commonly using, and it can be installed on the central processing unit 1, and can dispose a heat radiator 43 betwixt.The air-flow that this fan 4 is sent can make the temperature of this central processing unit 1 be minimized.
This controller 3 has a frequency reducing control output end in addition, can produce frequency reducing control signal SG2 pulse generator 5 (Clock Generater) to the computer installation, so that this clock pulse generator 5 is sent corresponding suitable frequency of operation CLK arteries and veins input end to the central processing unit 1 according to this frequency reducing control signal SG 2, with work time pulse as this central processing unit.Temperature, execution temperature that this controller 3 can adopt known microprocessor architecture design to reach and receive temperature sensor 2 and detected compare and generation rotation speed of the fan control signal SG 1 and frequency reducing control signal SG 2.Certainly this controller 3 also can adopt the framework of general electronic logic circuit, can reach identical function equally.
Fig. 2 is the present invention's the rotation speed of the fan and the curve map of central processor temperature relation for the present invention's control flow chart, Fig. 3, in this curve, the rotating speed R (rpm) of ordinate system expression fan, the expression central processing unit actual temperature value Tcpu of horizontal ordinate system (℃).Now cooperate Fig. 1, Fig. 2 and Fig. 3, to the present invention's control method do one describe in detail as after.
At first, according to reality need or according to the occasion of computing machine uses, the temperature value Ton that begins is opened in setting one minimum temperature reference value Tmin, a maximum temperature reference value Tmax, a frequency reducing in the present invention's controller 3, a frequency reducing stops temperature value Toff (step 101).During computer working, can monitor the actual temperature Tcpu (step 102) of central processing unit 1 by temperature sensor 2 at any time, central processor actual temperature value Tcpu can be sent to controller 3 among this detected.
Controller 3 receive this temperature sensor 2 detect among behind the central processor actual temperature Tcpu, central processing unit actual temperature value Tcpu and aforementioned every temperature reference value (being that beginning temperature value Ton is opened in minimum temperature reference value Tmin, maximum temperature reference value Tmax, frequency reducing, frequency reducing stops temperature value Toff) can be done one relatively.If central processing unit actual temperature value Tcpu is lower than minimum temperature reference value Tmin (step 103), then rotation speed of the fan R is set at 0 (step 104), i.e. line segment S1 as shown in Figure 3.When this central processing unit actual temperature value Tcpu was increased to greater than minimum temperature reference value Tmin, fan began to rotate with predetermined slow-speed of revolution R1.When this central processing unit actual temperature value Tcpu between this minimum temperature reference value Tmin and maximum temperature reference value Tmax interval (step 105), then controller 3 is adjusted the rotating speed (step 106) of this fan 4, i.e. line segment S2 as shown in Figure 3 according to this central processing unit actual temperature value Tcpu with direct proportion.Therefore if central processing unit actual temperature value Tcpu is able to effective cooling, then rotation speed of the fan R will reduce gradually with linear mode, controls so repeatedly and reaches the thermal equilibrium purpose.
For produce one with the rotation speed of the fan control signal SG1 of central processing unit actual temperature value Tcpu relation in direct ratio, except after the program design that can use microprocessor reaches, can also for example adopt and commonly use pulse wave modulation (Pulse Width Modulation, PWM) technology produces the rotation speed of the fan control signal SG1 that is somebody's turn to do with central processing unit actual temperature value T relation in direct ratio, to control the rotating speed of this fan 4.
In aforementioned linear segments (line segment S2), the rotation speed change of fan and temperature are the linear relationship of equal proportion, with this kind linear mode control fan, the rotation speed of the fan drop that is caused because of can reduce temperature variation the time is so the noise that is produced when changing for rotation speed of the fan is also suppressed.In addition, in linear segments, the central processing unit heat production can make rotation speed of the fan increase when increasing, opposite, the central processing unit heat production can make rotation speed of the fan reduce when reducing, so after continuing the temperature tracking, the heat production and the rotation speed of the fan of final central processing unit can reach an equilibrium point, this moment, central processing unit heat production speed and rate of heat dispation were best, and therefore the spent energy of fan also reduced.
When central processing unit actual temperature value Tcpu is higher than this maximum temperature reference value Tmax (step 107), this controller 3 is promptly controlled this fan 4 and is rotated (step 108) with maximum speed R2, promptly line segment S3 as shown in Figure 3 is minimized in the hope of the temperature that makes central processing unit.But when system is under the heavy duty, the central processing unit heat production is sharply risen, maintain high rotating speed with fan and can't effectively lower the temperature this moment, when if central processor temperature is higher than its maximum temperature that can bear, will damage the life-span of central processing unit and cause permanent damage even, for avoiding this situation to take place, in the present invention's the method frequency reducing control is applied in the radiating control of high-temperature region.That is, if fan 4 is under the situation of maximum speed, still deficiency is so that the temperature of central processing unit 1 when reducing, judge further then whether this central processing unit actual temperature value Tcpu surpasses default frequency reducing and open beginning temperature value Ton (step 109), if not, then this fan 4 still rotates with maximum speed.
In step 109; in case surpassing frequency reducing, opens when beginning temperature value Ton this central processing unit actual temperature value Tcpu; then controller 3 is except controlling this fan 4 with the maximum speed R2 rotation (step 110); other has activated the frequency reducing control function; deliver to the frequency of the work time pulse CLK of central processing unit 1 with reduction, so not only can still keep the normal running of computer system, also can reduce that the heat production speed, protection central processing unit 1 of central processing unit 1 is unlikely overheatedly to be caused the not reliable machine of system and avoid burning.The control of this frequency reducing can the single hop frequency reducing mode, reduce the frequency of the work time pulse CLK that delivers to central processing unit, the mode of section frequency reducing more than can also presetting reduces the frequency of the work time pulse CLK that delivers to central processing unit.
See through the aforementioned frequency reducing and the operation of fan full-speed operation, normally the temperature of central processing unit is minimized.When the temperature of central processing unit 1 is reduced to default frequency reducing when stopping temperature value Toff (step 111), then controller is promptly removed the control (step 112) of frequency reducing, central processing unit 1 is returned under the original normal work time pulse frequency operates.After this, still continue to monitor temperature, and control fan rotating speed (being repeating step 102 to 112), until system closedown (step 113).
In another embodiment of the present invention, a minimum temperature reference value Tmin and a maximum temperature reference value Tmax (consulting shown in Figure 4) also can in this controller, have only been preestablished.In this embodiment, its most control flow is all identical with last embodiment, its difference ties up to when detecting the actual temperature Tcpu of this central processing unit when temperature sensor, i.e. relatively this central processing unit actual temperature and minimum temperature reference value Tmin and maximum temperature reference value Tmax that should be default.
If central processing unit actual temperature value Tcpu is lower than minimum temperature reference value Tmin, then rotation speed of the fan R is set at 0, i.e. line segment S4 as shown in Figure 4.When this central processing unit actual temperature value Tcpu was increased to greater than minimum temperature reference value Tmin, fan began to rotate with predetermined slow-speed of revolution R1.When the interval of this central processing unit actual temperature value Tcpu, then according to the rotating speed of this central processing unit actual temperature value Tcpu with direct proportion adjustment fan, i.e. line segment S5 as shown in Figure 4 between this minimum temperature reference value Tmin and maximum temperature reference value Tmax.
When central processing unit actual temperature value Tcpu is higher than this maximum temperature reference value Tmax, the present invention promptly controls fan and rotates with maximum speed R2, i.e. line segment S6 as shown in Figure 4.Simultaneously, the present invention's controller has activated the frequency reducing control function, delivers to the frequency of the work time pulse of central processing unit with reduction, till this central processing unit actual temperature is lower than this maximum temperature reference value Tmax.
By above-mentioned explanation as can be known, the present invention controls rotation speed of the fan in the mode of continuous control speed, rotating speed drop in the time of can effectively reducing the rotation speed of the fan conversion, the noise that is produced in the time of can improving speed change, and the present invention uses continuation mode control fan, can obtain heat balance point, the increase of rotation speed of the fan or reduction between central processor temperature and rotation speed of the fan (air mass flow), adjust immediately by the central processor temperature that records, lower the power loss of fan by this.The present invention controls the fan central processing unit frequency reducing mode of arranging in pairs or groups again in the continuity mode, more can effectively prevent the heavy duty overheated generation of central processing unit down, for the many one decks protections of central processing unit.Therefore, the industrial utilization of the true tool height of the present invention.
More than embodiment explanation, only be the present invention's preferred embodiment explanation, all habit in this operator when doing other all improvement and variation according to the foregoing description explanation of the present invention.Yet all improvement and variation that these are done according to the embodiment of the invention are in creation spirit that still belongs to the present invention and the following claim scope that is defined.
Claims (6)
1. central processor cooling control method among the computer system, include a central processing unit, in this computer system in order to the fan of work time pulse pulse generator and heat transmission to this central processing unit to be provided, it is characterized in that: this method comprises the following steps:
The beginning temperature value is opened in a default maximum temperature reference value, a frequency reducing and a frequency reducing stops temperature value;
Detect the actual temperature of this central processing unit;
Relatively this central processing unit actual temperature and maximum temperature reference value that should be default;
When this central processing unit actual temperature is lower than this maximum temperature reference value, adjust this rotation speed of the fan with direct proportion according to this central processing unit actual temperature;
When this central processor temperature is higher than this maximum temperature reference value, controls this fan and rotate with maximum speed;
Relatively the beginning temperature value is opened in this central processing unit actual temperature and this frequency reducing;
Open the beginning during temperature value when this central processing unit actual temperature is higher than this frequency reducing, reduce the work time pulse frequency that this clock pulse generator is supplied to central processing unit, till this central processing unit actual temperature is lower than this frequency reducing and stops temperature value.
2. central processor cooling control method among the computer system according to claim 1, it is characterized in that: wherein this frequency reducing is opened the beginning temperature value greater than the maximum temperature reference value.
3. central processor cooling control method among the computer system according to claim 1, it is characterized in that: it also is preset with a minimum temperature reference value, make when this central processor temperature when relatively being lower than this minimum temperature reference value, stop the rotation of this fan.
4. central processor cooling control method among the computer system according to claim 1 is characterized in that: wherein this frequency reducing stops temperature value and is lower than this default maximum temperature reference value.
5. central processor cooling control method among the computer system, include a central processing unit, in this computer system in order to the fan of work time pulse pulse generator and heat transmission to this central processing unit to be provided, it is characterized in that: this method comprises the following steps:
A default maximum temperature reference value;
Detect the actual temperature of this central processing unit;
Relatively this central processing unit actual temperature and maximum temperature reference value that should be default;
When this central processing unit actual temperature is lower than this maximum temperature reference value, adjust this rotation speed of the fan with direct proportion according to this central processing unit actual temperature;
When this central processor temperature is higher than this maximum temperature reference value, controlling this fan rotates with maximum speed, and reduce the work time pulse frequency that this clock pulse generator is supplied to central processing unit, till this central processing unit actual temperature is lower than this maximum temperature reference value.
6. as central processor cooling control method among the computer system as described in the claim 5, it is characterized in that: it also is preset with a minimum temperature reference value, make when this central processor temperature when relatively being lower than this minimum temperature reference value, stop the rotation of this fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310112264 CN1622046A (en) | 2003-11-24 | 2003-11-24 | Method of heat radiation for CPU in computer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310112264 CN1622046A (en) | 2003-11-24 | 2003-11-24 | Method of heat radiation for CPU in computer system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1622046A true CN1622046A (en) | 2005-06-01 |
Family
ID=34759675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310112264 Pending CN1622046A (en) | 2003-11-24 | 2003-11-24 | Method of heat radiation for CPU in computer system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1622046A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394397C (en) * | 2005-09-22 | 2008-06-11 | 技嘉科技股份有限公司 | Apparatus for increasing processor efficiency under condition of meeting temperature request, and method thereof |
| CN100445653C (en) * | 2004-07-09 | 2008-12-24 | Lg电子株式会社 | Apparatus and method for controlling fan operation |
| CN101667042B (en) * | 2009-09-29 | 2011-07-13 | 中兴通讯股份有限公司 | Fan type temperature control method and device |
| CN102207761A (en) * | 2010-03-29 | 2011-10-05 | 鸿富锦精密工业（深圳）有限公司 | Temperature monitoring system |
| CN102298431A (en) * | 2010-06-28 | 2011-12-28 | 鸿富锦精密工业（深圳）有限公司 | Computer heat radiation control system and method |
| CN102312850A (en) * | 2010-06-29 | 2012-01-11 | 鸿富锦精密工业（深圳）有限公司 | Heat-radiation control system and method of fan |
| CN101739107B (en) * | 2008-11-24 | 2012-01-25 | 联想(北京)有限公司 | Notebook computer and heat dissipation method thereof |
| CN101763153B (en) * | 2008-12-25 | 2012-07-25 | 佛山市顺德区汉达精密电子科技有限公司 | Hard disk temperature monitoring device and method |
| CN102890549A (en) * | 2011-07-18 | 2013-01-23 | 纬创资通股份有限公司 | Overheat protection method for computer system and related device |
| CN103514011A (en) * | 2012-06-21 | 2014-01-15 | 苹果公司 | Thermal control apparatus and methodology |
| CN103576715A (en) * | 2012-07-24 | 2014-02-12 | 联想(北京)有限公司 | Method for temperature control and electronic equipment |
| CN103777095A (en) * | 2010-06-01 | 2014-05-07 | 发那科株式会社 | Abnormality inspection system of cooling unit in electronic circuit |
| CN104122962A (en) * | 2013-04-27 | 2014-10-29 | 宏碁股份有限公司 | Temperature regulation device and method |
| CN105867269A (en) * | 2016-04-11 | 2016-08-17 | 武汉攀升兄弟科技有限公司 | Computer work environment management system |
| CN113747739A (en) * | 2020-05-29 | 2021-12-03 | 技嘉科技股份有限公司 | Multi-heat-source temperature management method and multi-heat-source wireless communication device |
| CN114251776A (en) * | 2021-12-03 | 2022-03-29 | 珠海格力电器股份有限公司 | Control method, system and device for closing fresh air, fresh air fan and air conditioner |
| US11347198B2 (en) | 2020-09-04 | 2022-05-31 | Apple Inc. | Adaptive thermal control system |
-
2003
- 2003-11-24 CN CN 200310112264 patent/CN1622046A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100445653C (en) * | 2004-07-09 | 2008-12-24 | Lg电子株式会社 | Apparatus and method for controlling fan operation |
| CN100394397C (en) * | 2005-09-22 | 2008-06-11 | 技嘉科技股份有限公司 | Apparatus for increasing processor efficiency under condition of meeting temperature request, and method thereof |
| CN101739107B (en) * | 2008-11-24 | 2012-01-25 | 联想(北京)有限公司 | Notebook computer and heat dissipation method thereof |
| CN101763153B (en) * | 2008-12-25 | 2012-07-25 | 佛山市顺德区汉达精密电子科技有限公司 | Hard disk temperature monitoring device and method |
| CN101667042B (en) * | 2009-09-29 | 2011-07-13 | 中兴通讯股份有限公司 | Fan type temperature control method and device |
| CN102207761A (en) * | 2010-03-29 | 2011-10-05 | 鸿富锦精密工业（深圳）有限公司 | Temperature monitoring system |
| CN103777095A (en) * | 2010-06-01 | 2014-05-07 | 发那科株式会社 | Abnormality inspection system of cooling unit in electronic circuit |
| CN102298431A (en) * | 2010-06-28 | 2011-12-28 | 鸿富锦精密工业（深圳）有限公司 | Computer heat radiation control system and method |
| CN102312850A (en) * | 2010-06-29 | 2012-01-11 | 鸿富锦精密工业（深圳）有限公司 | Heat-radiation control system and method of fan |
| CN102890549A (en) * | 2011-07-18 | 2013-01-23 | 纬创资通股份有限公司 | Overheat protection method for computer system and related device |
| US8959379B2 (en) | 2011-07-18 | 2015-02-17 | Wistron Corporation | Thermal protection method for computer system and device thereof |
| CN103514011A (en) * | 2012-06-21 | 2014-01-15 | 苹果公司 | Thermal control apparatus and methodology |
| US9383789B2 (en) | 2012-06-21 | 2016-07-05 | Apple Inc. | Thermal control apparatus and methodology |
| CN103514011B (en) * | 2012-06-21 | 2016-12-28 | 苹果公司 | Heat control device and method |
| CN103576715A (en) * | 2012-07-24 | 2014-02-12 | 联想(北京)有限公司 | Method for temperature control and electronic equipment |
| CN104122962A (en) * | 2013-04-27 | 2014-10-29 | 宏碁股份有限公司 | Temperature regulation device and method |
| CN105867269A (en) * | 2016-04-11 | 2016-08-17 | 武汉攀升兄弟科技有限公司 | Computer work environment management system |
| CN113747739A (en) * | 2020-05-29 | 2021-12-03 | 技嘉科技股份有限公司 | Multi-heat-source temperature management method and multi-heat-source wireless communication device |
| CN113747739B (en) * | 2020-05-29 | 2023-09-22 | 技嘉科技股份有限公司 | Multi-heat source temperature management method and multi-heat source wireless communication device |
| US11347198B2 (en) | 2020-09-04 | 2022-05-31 | Apple Inc. | Adaptive thermal control system |
| CN114251776A (en) * | 2021-12-03 | 2022-03-29 | 珠海格力电器股份有限公司 | Control method, system and device for closing fresh air, fresh air fan and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1622046A (en) | Method of heat radiation for CPU in computer system | |
| US7010704B2 (en) | Apparatus for dynamically adjusting CPU power consumption | |
| CN102314213B (en) | The computer system of dynamic conditioning frequency of operation | |
| US7721561B2 (en) | Apparatus and method for controlling fan operation | |
| US9170626B2 (en) | Performance reduction limit for power consumption device | |
| CN101529361B (en) | Computer device power management system and method | |
| CN101349926B (en) | Method and apparatus for adjusting fan rotary speed | |
| US20070076372A1 (en) | Method and apparatus for controlling rotation speed of fan | |
| CN1602460A (en) | Operating system coordinated thermal management | |
| CN2554706Y (en) | Intelligence fan cooling device | |
| CN101064426A (en) | Method of protecting power device of inverter during stall of motor | |
| CN100385369C (en) | Apparatus and method for controlling rotation speed of multistage speed and intelligent fan | |
| CN2862170Y (en) | Fan rotary speed control device | |
| CN1967443A (en) | Radiating management device | |
| US20120285174A1 (en) | Systems and Methods for Optimized Gas Turbine Shutdown | |
| CN1220927C (en) | Apparatus for dynamically regulating computer system power consumption | |
| CN1854957A (en) | Method for adjusting fan running by power-supply mode | |
| CN100451979C (en) | Method for decreasing immediate current of boot-strap | |
| CN1932300A (en) | Fan control system and method | |
| CN109429469A (en) | The fan rotation speed control apparatus and control method of power supply unit | |
| CN2577326Y (en) | Notebook type computer with temperature-regulating function | |
| CN204721265U (en) | Based on the DC motor speed automatic regulating equipment of DS18B20 temperature sensor | |
| CN2731151Y (en) | Temperature controlled fan | |
| CN207377844U (en) | The fan rotation speed control apparatus of computer power supply supply | |
| CN100483356C (en) | Computer mainboard noise and efficiency balance control system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |