CN1854957A - Method for adjusting fan running by power-supply mode - Google Patents
Method for adjusting fan running by power-supply mode Download PDFInfo
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- CN1854957A CN1854957A CN 200510066012 CN200510066012A CN1854957A CN 1854957 A CN1854957 A CN 1854957A CN 200510066012 CN200510066012 CN 200510066012 CN 200510066012 A CN200510066012 A CN 200510066012A CN 1854957 A CN1854957 A CN 1854957A
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- radiator fan
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Abstract
A method of using power supply mode to control operation of fan includes applying the first heat radiation fan control table to control rotating speed of fan for raising heat radiation ability of portable electronic device when an external power supply applied on said device is detected out by embedded controller and applying the second heat radiation fan control table to control rotating speed of fan for extending service life of battery when battery power supply applied on said device is detected out by embedded controller.
Description
Technical field
The present invention is a kind of method of controlling the rotating speed of radiator fan, particularly relevant for a kind of method of utilizing the different power supply source of supply of portable electron device with the rotating speed of control radiator fan, with heat-sinking capability that under different power supply supply situations, promotes portable electron device or the service time that prolongs battery electric power.
Background technology
Because at present the volume of portable electron device is more and more littler, function is more and more stronger, the inner temperature that produces is more and more higher and power consumption is increasing, will be an important problem service time of therefore how to build good heat dissipation environment and prolonging battery electric power simultaneously concerning portable electron device.
In portable electron device, often utilize radiator fan as the primary clustering that heat sinking function is provided, discharge or the cold air of portable electron device outside is sucked with heat that portable electron device inside is produced, avoid the interior assembly of portable electron device because of overheated power reduction or the defective of damaging of taking place, wherein portable electron device comprises: mobile computer and flat computer.The mode of tradition control radiator fan for the corresponding control table that utilizes a temperature and radiating fan rotation speed to control the portable electron device temperature inside by the rotating speed of controlling radiator fan, wherein this temperature is the temperature of a processor (Processor).Owing to processor is the easiest evolution of heat in portable electron device inside and the easiest because too high assembly of damaging of temperature, so radiator fan tends to the program of dispelling the heat at processor.
Continue to keep high rotating speed and bring unwanted noise for fear of radiator fan, usually the rotating speed of radiator fan all can be along with the temperature of processor interim raising or reduction, suitable heat-sinking capability to be provided along with the temperature of processor and to avoid producing excessive noise and cause user's puzzlement.But utilize the single temperature and the corresponding control table control of radiating fan rotation speed to make the radiator fan of portable electronic apparatus, to cause portable electron device easily when using battery mode, reduce the service time of battery electric power because of excessive heat-sinking capability is provided.When portable electron device utilized its battery as the power supply source of supply, the frequency of processor tended to reduce to avoid producing too much heat automatically.The service time that reduce battery electric power if the original temperature of sustainable utilization will provide excessive heat-sinking capability with the rotating speed of the corresponding control table control of the rotating speed radiator fan of radiator fan this moment.This situation also can increase the noise that radiator fan produces simultaneously.
With reference to shown in Figure 1, this is the synoptic diagram that utilizes the rotating speed of known technology control radiator fan, and is that the applicant was in 93 years 08 month 17 days application one Taiwan patent (application numbers: 93124620; Title: the method for the rotating speed of automatic fine tuning radiator fan).This known technology is to utilize the single temperature and the corresponding control table of radiating fan rotation speed to finely tune the rotating speed of radiator fan, with the noise that radiating efficiency and radiator fan were produced of balance radiator fan.When the temperature of processor raises and the rotating speed of radiator fan when being lower than rotational speed criteria value in the corresponding control table of temperature and radiating fan rotation speed, the rotating speed that then progressively improves radiator fan is with the heat-sinking capability of lifting processor and avoid the generation (620) of the noise that happens suddenly.When the temperature of processor reduces and the rotating speed of radiator fan when being higher than rotational speed criteria value in the corresponding control table of temperature and radiating fan rotation speed, then progressively reduce the consumption (626) of the rotating speed saving electric power of radiator fan.Though use the rotating speed of this known technology control fan also can reach the purpose of saving power consumption, but control the rotating speed of radiator fan because of it only utilizes the single temperature and the corresponding control table of radiating fan rotation speed, therefore still can produce the defective that consumes battery electric power excessively.
Summary of the invention
Because utilize traditional control method of cooling fan will increase easily portable electron device when using battery electric power noise and the service time of reducing battery electric power easily, the invention provides a kind of method of utilizing the different power supply source of supply of portable electron device with the rotating speed of control radiator fan.Change the rotating speed of the corresponding control table control radiator fan of the temperature of required application and radiating fan rotation speed according to the power supply supply status of portable electron device, to prolong the battery electric power service time of portable electron device when utilizing battery as the power supply source of supply.
Another object of the present invention is to change the temperature of required application and the rotating speed of the corresponding control table control radiator fan of radiating fan rotation speed according to the power supply supply status of portable electron device, to prolong the serviceable life of radiator fan.
A further object of the present invention is to change the temperature of required application and the rotating speed of the corresponding control table control radiator fan of radiating fan rotation speed according to the power supply supply status of portable electron device, to reduce the noise that radiator fan was produced.
According to above-mentioned purpose, the invention provides a kind of method of utilizing the different power supply source of supply of portable electron device with the rotating speed of control radiator fan.At first utilize embedded controller (EmbeddedController; EC) state of the power supply source of supply of detecting portable electron device.When embedded controller detecting portable electron device used an external power supply, embedded controller can adopt the rotating speed of first radiator fan control table control radiator fan to improve the heat-sinking capability of portable electron device.When embedded controller detecting portable electron device used battery supply, embedded controller can adopt the rotating speed of second radiator fan control table control radiator fan to prolong the service time of battery electric power.The corresponding control table that the first radiator fan control table and the second radiator fan control table can be the corresponding control table of temperature of processor and radiating fan rotation speed or temperature of processor and the supply voltage of radiator fan is with according to the temperature of processor or the rotating speed of portable electron device temperature inside control radiator fan.Utilize the heat-sinking capability that rotating speed provided of first radiator fan control table control radiator fan to be higher than the heat-sinking capability that rotating speed provided of utilizing second radiator fan control table control radiator fan.The first radiator fan control table and the second radiator fan control table can be stored in the internal memory, and wherein this internal memory can be the internal memory in the embedded controller, the flash memory (Flash Memory) or the ROM (read-only memory) of other position (the Read-Only Memory of other position; ROM).Method of the present invention can prolong the serviceable life that the battery electric power of portable electron device when utilizing battery as the power supply source of supply also can prolong radiator fan service time.Method of the present invention also can reduce the noise that radiator fan produces.
Description of drawings
Fig. 1 is the synoptic diagram that utilizes the rotating speed of known technology control radiator fan.
Fig. 2 is the schematic flow sheet of control method of the present invention.
Fig. 3 A is the synoptic diagram of the employed first radiator fan control table under the state that utilizes external power supply as the power supply source of supply in the present embodiment.
Fig. 3 B is the synoptic diagram of the second radiator fan control table that made in the present embodiment under the state that utilizes battery electric power as the power supply source of supply.
Embodiment
With reference to shown in Figure 2, this is the schematic flow sheet of control method of the present invention.At first utilize embedded controller (Embedded Controller; EC) the power supply source of supply (210) of detecting and judgement electronic apparatus.When judging that this power supply source of supply is an external power supply, then embedded controller adopts the first radiator fan control table required radiating efficiency with the rotating speed (220) of controlling radiator fan along with the height of temperature of processor and when reaching the portable electron device running immediately.When embedded controller judged that this power supply source of supply is battery electric power, then embedded controller can adopt the second radiator fan control table (230) to control the rotating speed of fan along with the height of temperature of processor immediately.The corresponding control table that the first radiator fan control table and the second radiator fan control table are the corresponding control table of temperature of processor and radiating fan rotation speed or temperature of processor and the supply voltage of radiator fan is with the rotating speed according to the temperature control radiator fan of processor.When the temperature of processor raise or reduce, the rotating speed of radiator fan also can be along with raising or reducing so that a corresponding heat-sinking capability to be provided.Because processor is generally the inner maximum pyrotoxin of portable electron device, so the rotating speed of radiator fan tends to along with the temperature of processor is adjusted so that corresponding heat-sinking capability to be provided.But along with the difference of product demand, above-mentioned temperature of processor also can be converted to the internal temperature of portable electron device.The first radiator fan control table and the second radiator fan control table are stored in the internal memory in the embedded controller, interior or interior (the Read-Only Memory of the ROM (read-only memory) of other position of flash memory (FlashMemory) of other position usually; ROM).
The first radiator fan control table and the difference of the second radiator fan control table are that fan activates opportunity rotating speed different or pairing radiator fan under uniform temp different.Under uniform temp, utilize the heat-sinking capability that rotating speed provided of first radiator fan control table control radiator fan to be higher than the heat-sinking capability that rotating speed provided of utilizing second radiator fan control table control radiator fan.When general power supply source of supply when electronic installation uses external power supply, under the power supply supply of abundance, the in good time raising clock pulse of meeting of the processor that electronic installation is interior and promote the efficient of electronics process data.Along with the consumed power lifting of processor, temperature of processor also can be accompanied by apace and improve, thereby needs to use the first radiator fan control table of preferable heat-sinking capability, to avoid the phenomenon of portable electron device because of overheated generation damage.When portable electron device used battery supply, in order to prolong the service time of battery electric power, the processor in the portable electron device tended to reduce its clock pulse to avoid consuming a large amount of battery electric powers.This moment, the consumed power because of processor reduced, the working temperature of processor just can promptly not increase, thereby can adopt the lower second radiator fan control table control rotation speed of the fan of heat-sinking capability, prolong the service time of battery electric power to postpone the opportunity of utilizing fan to activate.
Because the heat that the function of portable electron device is more and more and intraware produced is more and more at present, so portable electron device inside often needs most fans so that suitable heat-sinking capability to be provided at portable electron device.Following embodiment utilizes radiating fan system and two radiator fan control tables at different power supply supply status the dispel the heat embodiment of program of the different radiator fan control table of employing down for portable electron device, but do not limit the scope of the invention, wherein radiating fan system comprises one first radiator fan and one second radiator fan.Shown in Fig. 3 A, this is the synoptic diagram of the employed first radiator fan control table under the state that utilizes external power supply as the power supply source of supply in the present embodiment.Shown in Fig. 3 B, this is the synoptic diagram of the second radiator fan control table that made in the present embodiment under the state that utilizes battery electric power as the power supply source of supply.
At first utilize the power supply source of supply of embedded controller detecting and judgement electronic apparatus.When judging that this power supply source of supply is an external power supply, then embedded controller adopts the first radiator fan control table required radiating efficiency with the rotating speed of controlling radiator fan along with the height of temperature of processor and when reaching the portable electron device running immediately.In the first radiator fan control table and the second radiator fan control table, the temperature of processor that embedded controller passes through to be detected is controlled the input voltage of radiator fan, and then the rotating speed of control radiator fan.In the present embodiment, the input voltage of radiator fan can be divided into six stages along with the temperature of the processor of institute's sensing to be adjusted, and then the rotating speed of control radiator fan.When the temperature of processor below 57 ℃ the time, radiating fan system activates first radiator fan to keep the phase one heat radiation program of radiating fan system, wherein the input voltage of first radiator fan is 3 volts.When the temperature of processor is higher than 57 ℃, the rotating speed that radiating fan system begins to activate second radiator fan and keep first radiator fan is to enter the subordinate phase heat radiation program of radiating fan system, and wherein the input voltage of first radiator fan and second radiator fan is 3 volts.When the temperature of processor is higher than 63 ℃, radiating fan system improves the input voltage of first radiator fan and second radiator fan simultaneously with rotating speed that improves first radiator fan and second radiator fan and the phase III heat radiation program that enters radiating fan system, and wherein the input voltage of first radiator fan and second radiator fan is 3.5 volts.When the temperature of processor is higher than 70 ℃, radiating fan system improves the input voltage of first radiator fan and second radiator fan simultaneously with rotating speed that improves first radiator fan and second radiator fan and the quadravalence section heat radiation program that enters radiating fan system, and wherein the input voltage of first radiator fan and second radiator fan is 4 volts.When the temperature of processor is higher than 75 ℃, radiating fan system improves the input voltage of first radiator fan and keeps second radiating fan rotation speed with the heat-sinking capability of radiating fan system and the five-stage heat radiation program that enters radiating fan system, and wherein the input voltage of first radiator fan is that the input voltage of 5 volts and second radiator fan is 4 volts.When the temperature of processor is higher than 78 ℃, radiating fan system improves the input voltage of first radiator fan and second radiator fan simultaneously with rotating speed that improves first radiator fan and second radiator fan and the 6th stage heat radiation program that enters radiating fan system, and wherein the input voltage of first radiator fan and second radiator fan is 5 volts.When the temperature of processor was higher than 82 ℃, because processor has arrived a damage critical temperature, so operating system (OS) can take place to damage to avoid processor when the phenomenon of machine.At this moment, first radiator fan and second radiator fan are still kept the rotating speed in the 6th stage so that maximum heat-sinking capability to be provided.
When judging that this power supply source of supply is a battery electric power, then embedded controller adopts the second radiator fan control table required radiating efficiency with the rotating speed of controlling radiator fan along with the height of temperature of processor and when reaching the portable electron device running immediately.When the temperature of processor below 57 ℃ the time, radiating fan system activates first radiator fan to keep the phase one heat radiation program of radiating fan system, wherein the input voltage of first radiator fan is 3 volts and does not activate second radiator fan this moment.When the temperature of processor was higher than 63 ℃, radiating fan system entered subordinate phase heat radiation program.This moment, the rotating speed of first radiator fan was still identical with phase one heat radiation program and still do not activate second radiator fan, and wherein the input voltage of first radiator fan is 3 volts.When the temperature of processor is higher than 63 ℃, the input voltage that radiating fan system improves first radiator fan is with rotating speed that improves first radiator fan and the phase III heat radiation program that enters radiating fan system, wherein the input voltage of first radiator fan be 3.5 volts and this moment second radiator fan still be not activated.When the temperature of processor is higher than 70 ℃, the input voltage that radiating fan system improves first radiator fan is with rotating speed that improves first radiator fan and the quadravalence section heat radiation program that enters radiating fan system, wherein the input voltage of first radiator fan be 4 volts and this moment second radiator fan still be not activated.When the temperature of processor is higher than 75 ℃, radiating fan system begins the rotating speed that activates second radiator fan and improve first radiator fan with heat-sinking capability that improves radiating fan system and the five-stage heat radiation program that enters radiating fan system, and wherein the input voltage of first radiator fan input voltage that is 5 volts and second radiator fan is 3 volts.When the temperature of processor is higher than 78 ℃, the rotating speed that radiating fan system improves the input voltage of second radiator fan and keeps first radiator fan is with heat-sinking capability that improves radiating fan system and the 6th stage heat radiation program that enters radiating fan system, and wherein the input voltage of first radiator fan and second radiator fan is 5 volts.When the temperature of processor was higher than 82 ℃, because processor has arrived a damage critical temperature, so operating system (OS) can take place to damage to avoid processor when the phenomenon of machine.In the heat radiation program in this 7th stage, first radiator fan and second radiator fan are still kept the rotating speed in the 6th stage so that maximum heat-sinking capability to be provided.
In the present embodiment, the difference of the first radiator fan control table and the second radiator fan control table maximum is the activation opportunity of second radiator fan.When portable electron device adopts external power supply as the power supply source of supply and when using the first radiator fan control table, owing to do not have power supply supply quantitative limitation, so processor can be brought into play its maximum usefulness.The high radiating fan system that causes need provide preferable heat-sinking capability to avoid processor the defective of damage to take place when the heat that produced this moment will adopt battery electric power for the power supply source of supply.It promptly is for preferable heat-sinking capability is provided that second radiator fan promptly is activated in the heat radiation program of subordinate phase.When portable electron device adopts battery electric power as the power supply source of supply, because power supply supply quantitative limitation is arranged, so processor can reduce its operating frequency usually to save electric power.The heat that produced this moment will adopt external power supply to cause radiating fan system only need provide suitable heat-sinking capability can avoid processor that the defective of damage takes place for the power supply source of supply is low.It promptly is the service time that prolongs battery electric power in the suitable heat-sinking capability in order to provide that second radiator fan just is activated in the heat radiation program of five-stage.Owing to will significantly reduce the utilization rate of radiator fan when adopting second radiator fan control table control fan, noise content that is produced when therefore utilizing method of the present invention can reduce the radiator fan running and the serviceable life that prolongs radiator fan.In the present embodiment, though the maximum difference point of the first radiator fan control table and the second radiator fan control table is that the fan activation of the second radiator fan control table is later than the activation opportunity of the first radiator fan control table opportunity, does not limit the scope of the invention.When the temperature of processor was identical, the pairing radiating fan rotation speed of the second radiator fan control table can be lower than the pairing radiating fan rotation speed of the first radiator fan control table to prolong the service time of battery electric power.
Comprehensively above-mentioned, the invention provides a kind of method of utilizing the different power supply source of supply of portable electron device with the rotating speed of control radiator fan.At first utilize embedded controller (Embedded Controller; EC) state of the power supply source of supply of detecting portable electron device.When embedded controller detecting portable electron device used an external power supply, embedded controller can adopt the rotating speed of first radiator fan control table control radiator fan to improve the heat-sinking capability of portable electron device.When embedded controller detecting portable electron device used battery supply, embedded controller can adopt the rotating speed of second radiator fan control table control radiator fan to prolong the service time of battery electric power.The corresponding control table that the first radiator fan control table and the second radiator fan control table can be the corresponding control table of temperature of processor and radiating fan rotation speed or temperature of processor and the supply voltage of radiator fan is with according to the temperature of processor or the rotating speed of portable electron device temperature inside control radiator fan.Utilize the heat-sinking capability that rotating speed provided of first radiator fan control table control radiator fan to be higher than the heat-sinking capability that rotating speed provided of utilizing second radiator fan control table control radiator fan.The first radiator fan control table and the second radiator fan control table can be stored in the internal memory, and wherein this internal memory can be the internal memory in the embedded controller, the flash memory (FlashMemory) or the ROM (read-only memory) of other position (the Read-Only Memory of other position; ROM).Method of the present invention can prolong the serviceable life that the battery electric power of portable electron device when utilizing battery as the power supply source of supply also can prolong radiator fan service time.Method of the present invention also can reduce the noise that radiator fan produces.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limiting the present invention, anyly is familiar with this operator, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is when being as the criterion that claim defined according to the present invention.
Claims (10)
1. method that is used on the portable electron device with the rotating speed of controlling a radiating fan system, this portable electron device has an embedded controller, one first radiator fan control table and one second radiator fan control table, this first radiator fan control table and this second radiator fan control table all are stored in the internal memory, it is characterized in that:
(1) utilize this embedded controller to detect and judge a power supply source of this portable electron device;
(2) when this power supply source is an external power supply, utilize this first radiator fan control table to control this radiating fan system; And
(3) when this power supply source is a battery electric power, utilize this second radiator fan control table to control this radiating fan system, to prolong battery electric power service time of this portable electron device, the heat-sinking capability that wherein utilizing this first radiator fan control table to control this radiating fan system provides is higher than utilizes this second radiator fan control table to control the heat-sinking capability that this radiating fan system provides.
2. the method for the rotating speed of control radiating fan system as claimed in claim 1 is characterized in that: portable electron device comprises a processor.
3. the method for the rotating speed of control radiating fan system as claimed in claim 2 is characterized in that: this first radiator fan control table is the temperature of this processor and the corresponding control table of the radiating fan rotation speed of this radiating fan system.
4. the method for the rotating speed of control radiating fan system as claimed in claim 2 is characterized in that: this second radiator fan control table is the temperature of this processor and the corresponding control table of the radiator fan input voltage of this radiating fan system.
5. the method for the rotating speed of control radiating fan system as claimed in claim 1 is characterized in that: this first radiator fan control table is the corresponding control table of internal temperature with the radiator fan input voltage of this radiating fan system of this portable electron device.
6. the method for the rotating speed of control radiating fan system as claimed in claim 1 is characterized in that: this second radiator fan control table is the corresponding control table of internal temperature with the radiating fan rotation speed of this radiating fan system of this portable electron device.
7. the method for the rotating speed of control radiating fan system as claimed in claim 2 is characterized in that: the temperature of processor when utilizing this first radiator fan control table to adjust this radiating fan system is lower than the temperature of processor when utilizing this second radiator fan control table to adjust this radiating fan system.
8. the method for the rotating speed of control radiating fan system as claimed in claim 1 is characterized in that: the portable electron device internal temperature when utilizing this first radiator fan control table to adjust this radiating fan system is lower than the temperature of processor when utilizing this second radiator fan control table to adjust this radiating fan system.
9. the method for the rotating speed of control radiating fan system as claimed in claim 1 is characterized in that: this radiating fan system comprises most fans.
10. the method for the rotating speed of control radiating fan system as claimed in claim 9, it is characterized in that: when utilizing this first radiator fan control table to control this radiating fan system, activate opportunity with this fan when utilizing this second radiator fan control table to control this radiating fan system activation opportunity of the fan in this majority fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100660125A CN100541381C (en) | 2005-04-19 | 2005-04-19 | Method with powering mode control fan running |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100660125A CN100541381C (en) | 2005-04-19 | 2005-04-19 | Method with powering mode control fan running |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1854957A true CN1854957A (en) | 2006-11-01 |
| CN100541381C CN100541381C (en) | 2009-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100660125A Expired - Fee Related CN100541381C (en) | 2005-04-19 | 2005-04-19 | Method with powering mode control fan running |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141831A (en) * | 2010-02-02 | 2011-08-03 | 英业达股份有限公司 | Method for controlling rotating speed of fan by utilizing baseboard management controller |
| CN102129222B (en) * | 2010-01-14 | 2012-10-31 | 英业达股份有限公司 | Method for adjusting control parameters of fan on line for server |
| CN102854949A (en) * | 2012-07-26 | 2013-01-02 | 爱科瑞士制冷科技（深圳）有限公司 | Computer server heat dissipation system and method for heat-dissipating and cooling computer server heat dissipation system |
| CN105090083A (en) * | 2015-08-28 | 2015-11-25 | 小米科技有限责任公司 | Method and device for controlling intelligent fan, intelligent fan and terminal |
| CN106286359A (en) * | 2015-05-29 | 2017-01-04 | 小米科技有限责任公司 | Control method for fan and device |
| WO2022192704A1 (en) * | 2021-03-12 | 2022-09-15 | Milwaukee Electric Tool Corporation | Portable pedestal fan |
-
2005
- 2005-04-19 CN CNB2005100660125A patent/CN100541381C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129222B (en) * | 2010-01-14 | 2012-10-31 | 英业达股份有限公司 | Method for adjusting control parameters of fan on line for server |
| CN102141831A (en) * | 2010-02-02 | 2011-08-03 | 英业达股份有限公司 | Method for controlling rotating speed of fan by utilizing baseboard management controller |
| CN102854949A (en) * | 2012-07-26 | 2013-01-02 | 爱科瑞士制冷科技（深圳）有限公司 | Computer server heat dissipation system and method for heat-dissipating and cooling computer server heat dissipation system |
| CN106286359A (en) * | 2015-05-29 | 2017-01-04 | 小米科技有限责任公司 | Control method for fan and device |
| CN106286359B (en) * | 2015-05-29 | 2018-07-24 | 小米科技有限责任公司 | Control method for fan and device |
| CN105090083A (en) * | 2015-08-28 | 2015-11-25 | 小米科技有限责任公司 | Method and device for controlling intelligent fan, intelligent fan and terminal |
| WO2022192704A1 (en) * | 2021-03-12 | 2022-09-15 | Milwaukee Electric Tool Corporation | Portable pedestal fan |
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| Publication number | Publication date |
|---|---|
| CN100541381C (en) | 2009-09-16 |
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Granted publication date: 20090916 Termination date: 20190419 |