CN101201632A - Method for controlling rotary speed of fan - Google Patents
Method for controlling rotary speed of fan Download PDFInfo
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- CN101201632A CN101201632A CNA2006101690349A CN200610169034A CN101201632A CN 101201632 A CN101201632 A CN 101201632A CN A2006101690349 A CNA2006101690349 A CN A2006101690349A CN 200610169034 A CN200610169034 A CN 200610169034A CN 101201632 A CN101201632 A CN 101201632A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 89
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Abstract
The invention discloses a method of controlling rotating speed of fan; the method is suitable for adjusting the rotating speed of fan according to the system temperature. The method provides a plurality of groups of temperature/rotating speed conversion tables; wherein, each group of temperature/rotating speed conversion table meets the special temperature requirements and noise requirements. Then, after the using requirement is received, the using requirement is compared with the corresponding temperature requirement and noise requirement in the temperature/rotating speed conversion tables, and a relatively suitable temperature/rotating speed conversion table is selected. The temperature value of the system is detected; by referring the selected temperature/rotating speed conversion table and inquiring the rotating speed value of the fan corresponding to the temperature value of the system, the rotating speed of the fan can be adjusted according to the rotating speed value of the fan.
Description
Technical field
The invention relates to a kind of fan rotational frequency control method, and particularly about a kind of user of method can adjust rotation speed of the fan according to to(for) the temperature and the different demands of noise.
Background technology
Along with the progress of science and technology, can provide the notebook computer of multiple functions such as document processing, web page browsing, instant messaging or desktop computer to become the modern and live and go up one of indispensable instrument.And computer can produce used heat in operation, has influence on the usefulness of computer operation for fear of used heat, usually can be in the cabinet of computer or set fan the higher authorities of computer CPU (central processing unit), and in order to discharging used heat.
Traditional fan is to design at the most harsh environmental baseline (worst case), also promptly when fan during by the operation of its peak power, must electronic installation be cooled in certain safe temperature scope effectively.Yet the practice that improves rotation speed of the fan in fragment in the time suddenly not only can produce annoying noise, the consume that also can increase electric power simultaneously.
Another kind of design then is to install thermal resistor in the fan axle yoke, according to arround temperature variation change resistance sizes, and adjust size of current by fan with the rotating speed of control fan.Yet this kind utilizes thermal resistor to come the mode of sensing fan node ambient temperature also sensitive inadequately, and can't control the rotating speed of fan accurately and rotate the noise that is produced.In addition, the fan speed control technology of a new generation is at CPU (central processing unit) (centerprocessing unit, CPU) Temperature Detector of configuration measures the actual temperature of CPU in, and this temperature information is sent to mainboard, utilize an extra operation circuit control rotation speed of the fan of fan by mainboard again, use the rotating speed of controlling fan more accurately.
Though the rotating speed of fan can be controlled and adjust to above-mentioned technology along with the actual temperature of electronic installation, but electronic installation is when dispatching from the factory, configured the fixing adjustment rotation speed of the fan mode of a cover usually.For instance, as shown in Figure 1, when the temperature that detects did not reach minimum temperature T1, the control rotation speed of the fan was R1; When the temperature that detects reached between minimum temperature T1 and the maximum temperature T2, along with temperature is high more, it was fast more to adjust rotation speed of the fan; When the temperature that detects surpassed maximum temperature T2, fan promptly moved with maximum speed R2.
Yet different users is all inequality for the temperature and the noise demand of electronic installation.In other words, part user wishes that electronic installation can move under quiet state, and part user wishes that the temperature of electronic installation is lower better or maintain in certain temperature range.In view of the above, traditional rotation speed of the fan control technology can't satisfy various users' demand.
Summary of the invention
The invention provides a kind of fan rotational frequency control method, by formulating temperature/rotating speed conversion table that many groups satisfy different temperatures and noise demand, and in response to the user to the different demands of temperature with noise, selection meets and best temperature/rotating speed conversion table, and adjust the rotating speed of fan according to this, reach the purpose that satisfies user's demand.
The present invention proposes a kind of fan rotational frequency control method, be suitable for temperature according to system, adjust the rotating speed of fan, the method comprises the following steps: at first to provide many group temperature/rotating speed conversion tables, and wherein each group temperature/rotating speed conversion table satisfies specific temperature requirements and noise demand.Receive a user demand then, and this user demand and each group temperature/pairing temperature requirements of rotating speed conversion table and noise demand are made comparisons, to select only temperature/rotating speed conversion table.Last then can adjust the rotating speed of fan according to selected temperature/rotating speed conversion table.
According to the described fan rotational frequency control method of preferred embodiment of the present invention, wherein the step of adjusting the rotating speed of fan according to selected temperature/rotating speed conversion table comprises the temperature value of detection system, and with reference to selected temperature/rotating speed conversion table, the rotation speed of the fan value of the temperature value correspondence of inquiry system.The last rotating speed of adjusting fan again according to the rotation speed of the fan value of this inquiry gained.
According to the described fan rotational frequency control method of preferred embodiment of the present invention, wherein the step of the temperature value of detection system comprises that the baseboard management controller by system sends the detection instruction to Temperature Detector, and detects the also temperature value of repaying system by Temperature Detector.
According to the described fan rotational frequency control method of preferred embodiment of the present invention, wherein these temperature/rotating speed conversion table also comprises and satisfies security requirement.
According to the described fan rotational frequency control method of preferred embodiment of the present invention, comprise that also storage selected temperature/rotating speed conversion table is in a storage unit of system.
According to the described fan rotational frequency control method of preferred embodiment of the present invention, wherein this user demand comprises the serviceability temperature demand and uses the noise demand.
According to the described fan rotational frequency control method of preferred embodiment of the present invention, wherein select the step of temperature/rotating speed conversion table to comprise that the temperature requirements with serviceability temperature demand and these temperature/rotating speed conversion table compares, to select its temperature requirements to satisfy the serviceability temperature demand and to be the temperature/rotating speed conversion table of the best.
According to the described fan rotational frequency control method of preferred embodiment of the present invention, wherein select the step of temperature/rotating speed conversion table to comprise and to use the noise demand of noise demand and these temperature/rotating speed conversion table to compare, to select its noise need satisfaction to use the noise demand and to be the temperature/rotating speed conversion table of the best.
The present invention is because of adopting many group temperature/rotating speed conversion table modes of formulating, and each group temperature/rotating speed conversion table satisfies specific temperature requirements and noise demand, therefore can be according to the different demands of different users to temperature and noise, select to be fit to and best temperature/rotating speed conversion table, with the control rotation speed of the fan, satisfy user's various demands.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment of the present invention cited below particularly, and conjunction with figs. is described in detail below.
Description of drawings
Fig. 1 is the fan rotational frequency control method of prior art.
Fig. 2 is the process flow diagram of the fan rotational frequency control method of a preferred embodiment of the present invention.
Fig. 3 is the many groups of temperature/rotating speed conversion tables that satisfy specific temperature requirements and noise demand of a preferred embodiment of the present invention.
Fig. 4 is the temperature/rotating speed conversion table of a preferred embodiment of the present invention.
Fig. 5 is the temperature/rotating speed conversion table of a preferred embodiment of the present invention.
Embodiment
Part user has relatively high expectations for the noise problem of electronic installation, expects promptly that also computer apparatus can reduce the interference of noise when operation, and requires electronic installation to control the rotating speed of fan in specific noise decibel scope; In addition, partly the user is then higher for the temperature requirement of electronic installation, wish that promptly electronic installation the time can not reduce the operation usefulness of central processing unit because temperature is too high in operation, therefore require the electronic installation can be in specific temperature range, the rotating speed of control fan be to reduce temperature.The present invention is promptly at above-mentioned two kinds of demands, proposes a while can satisfy the fan rotational frequency control method of these two kinds of demands.In order to make content of the present invention more clear, below the example that can implement according to this really as the present invention especially exemplified by embodiment.
Fig. 2 is the process flow diagram of the fan rotational frequency control method of a preferred embodiment of the present invention.Please refer to Fig. 2, at first, present embodiment has been formulated the many groups of temperature/rotating speed conversion tables (step S201) that satisfy specific temperature requirements and noise demand at different temperature requirements and noise demand.As shown in Figure 3, but first temperature/rotating speed conversion table satisfied temperature scope is the temperature requirements of 25～35 degree, and the noise demand also is controlled in 35～45 decibels of scopes.Second temperature/rotating speed conversion table then satisfied temperature scope is the temperature requirements of 30～40 degree, and the noise demand is controlled in 30～37.5 decibels of scopes.By that analogy, specific temperature requirements and noise demand are also satisfied in the design of the 3rd～the 5th temperature/rotating speed conversion table.
What deserves to be mentioned is that present embodiment is only with 5 groups of temperature/rotating speed conversion table explanation, but non-in order to limit its scope, fooled visual user is different with the equilibrium point of noise demand for temperature requirements in practical application, additions and deletions temperature/rotating speed conversion table.Wherein, each design of organizing temperature/rotating speed conversion table all meets a security requirement, and the temperature that also is about to system is controlled in the safe temperature scope, and avoids causing the damage of electronic installation.
After temperature/formulation of rotating speed conversion table was finished, next step then can receive a user demand (step S202), and this user demand for example comprises the serviceability temperature demand and uses the noise demand.Then just this user demand and each temperature/pairing temperature of rotating speed conversion table and noise demand can be compared, select more suitable temperature/rotating speed conversion table (step S203).This step can be further divided at temperature requirements and relatively reach at noise demand comparison two partly, wherein be that the serviceability temperature demand of user's proposition and the temperature requirements of each temperature/rotating speed conversion table are compared when the C.T. demand, and the selection temperature requirements satisfy the serviceability temperature demand and be best temperature/rotating speed conversion table; In addition, then be that the use noise demand of user's proposition and the noise demand of each temperature/rotating speed conversion table are compared when comparing the noise demand, and selection noise need satisfaction use the noise demand and is best temperature/rotating speed conversion table.Wherein, above-mentioned serviceability temperature demand and use noise demand comprise system's patient temperature upper limit of institute and noise higher limit.
For instance, if the serviceability temperature demand that the user proposes is 35 degree, then by the temperature requirements in first～the 5th temperature/rotating speed conversion table of this serviceability temperature demand and Fig. 3 is compared, select the temperature/rotating speed conversion table (comprising first, second and third temperature/rotating speed conversion table) that meets, in these temperature/rotating speed conversion table again the noise demand (25～32.5 decibels) with the 3rd temperature/rotating speed conversion table be minimum, so decidable the 3rd temperature/rotating speed conversion table is best.
In another example, if the use noise demand that the user proposes is 32 decibels, then compare by the noise demand in first～the 5th temperature/rotating speed conversion table that this is used noise demand and Fig. 3, select the temperature/rotating speed conversion table (comprising second and third temperature/rotating speed conversion table) that meets, be minimum with the temperature requirements of second temperature/rotating speed conversion table (30～40 degree) again in these temperature/rotating speed conversion table, so decidable second temperature/rotating speed conversion table is the best.
In addition, cause data to run off for fear of system cut-off, present embodiment also comprises above-mentioned selected the 3rd temperature/rotating speed conversion table is stored in (step S204) in the intrasystem storage unit, and this storage unit for example is a nonvolatile memory (non-volatile store).
Next step then is the temperature value (step S205) of detection system.Wherein, the mode of the temperature value of detection system comprises that the baseboard management controller that utilizes system sends the detection instruction to being arranged on intrasystem Temperature Detector, gives baseboard management controller by Temperature Detector repayment temperature again, and obtains the temperature value of system's reality.
At last,, inquire about the pairing rotation speed of the fan value of this temperature value (step S206),, adjust the rotating speed (step S207) of fan again according to the rotation speed of the fan value of inquiry gained with reference to the 3rd temperature in the storage unit/rotating speed conversion table.
For instance, Fig. 4 is the temperature/rotating speed conversion table of a preferred embodiment of the present invention, please refer to Fig. 4, and this temperature/rotating speed conversion table is the detailed content of the 3rd temperature/rotating speed conversion table of Fig. 3.Wherein, when the detected temperature value of system is 35 when spending, the then corresponding rotation speed of the fan value of adjusting is 3800 revolutions per seconds; When the detected temperature value of system is 36 when spending, the then corresponding rotation speed of the fan value of adjusting is 3900 revolutions per seconds, by that analogy.Adopt this temperature/rotating speed conversion table satisfying under the serviceability temperature demand (35 degree), the level of noise of system is controlled in the best scope.In addition, the temperature of present embodiment/rotating speed conversion table is a rotating speed of adjusting fan with linear mode, so is not limited to this scope.
On the other hand, Fig. 5 is the temperature/rotating speed conversion table of a preferred embodiment of the present invention, please refer to Fig. 5, and this temperature/rotating speed conversion table is the detailed content of second temperature/rotating speed conversion table of Fig. 3.Wherein, when the detected temperature value of system is 30 when spending, the then corresponding rotation speed of the fan value of adjusting is 3500 revolutions per seconds; When the detected temperature value of system is 31 when spending, the then corresponding rotation speed of the fan value of adjusting is 3600 revolutions per seconds, by that analogy.Adopt this temperature/rotating speed conversion table satisfy using under the noise demand (32 decibels), the temperature value of system is controlled in the best scope.In like manner, the temperature of present embodiment/rotating speed conversion table is to adjust the rotating speed of fan with linear mode, but also is not limited to this scope.
What deserves to be mentioned is, fan rotational frequency control method of the present invention has been depicted a possible kenel in the foregoing description, but having, this area knows that usually the knowledgeable should know, difference along with system environments, designed temperature/rotating speed conversion table also can be different, and therefore application of the present invention is when being not restricted to above-mentioned kenel.In other words, so long as provide many groups to satisfy the temperature/rotating speed conversion table of specific temperature requirements and noise demand, use the demand that adapts to the different users and adjust rotation speed of the fan, spirit promptly according to the invention.
In sum, fan rotational frequency control method of the present invention comprises following advantage at least:
1. formulate temperature/rotating speed conversion table that many groups satisfy specific temperature requirements and noise demand, the demand that can adapt to the different users, or system assesses the demand that present environment for use proposed automatically, the temperature/rotating speed conversion table that meets demand is provided, and effectively adjusts rotation speed of the fan.
2. utilize the serviceability temperature demand of comparison user demand and the temperature requirements of each group temperature/rotating speed conversion table, selection meets and the optimum temperature/rotating speed conversion table of noise minimum.
3. utilize the use noise demand of comparison user demand and the noise demand of each group temperature/rotating speed conversion table, selection meets and the optimum temperature/rotating speed conversion table of temperature minimum.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; 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 with being as the criterion that claim was defined.
Claims (12)
1. a fan rotational frequency control method is suitable for the temperature according to a system, adjusts the rotating speed of a fan, and this fan rotational frequency control method comprises the following steps:
Many group temperature/rotating speed conversion tables are provided, and wherein each those temperature/rotating speed conversion table satisfies a specific temperature requirements and a noise demand;
Receive a user demand;
Relatively this user demand and pairing this temperature requirements of those temperature/rotating speed conversion table and this noise demand, select those temperature/rotating speed conversion table one of them; And
Adjust the rotating speed of this fan according to this temperature/rotating speed conversion table.
2. fan rotational frequency control method as claimed in claim 1 is characterized in that, the step of adjusting the rotating speed of this fan according to this temperature/rotating speed conversion table comprises:
Detect a temperature value of this system;
With reference to selected this temperature/rotating speed conversion table, inquire about a rotation speed of the fan value of this temperature value correspondence; And
Adjust the rotating speed of this fan according to this rotation speed of the fan value.
3. fan rotational frequency control method as claimed in claim 2 is characterized in that, the step that detects this temperature value of this system comprises:
Baseboard management controller by this system sends a detection instruction to a Temperature Detector; And
Detect and repay this temperature value by this Temperature Detector.
4. fan rotational frequency control method as claimed in claim 1 is characterized in that, those temperature/rotating speed conversion table also comprises a satisfied security requirement.
5. fan rotational frequency control method as claimed in claim 4 is characterized in that, this security requirement comprises that the temperature with this system is controlled in the safe temperature scope.
6. fan rotational frequency control method as claimed in claim 1 is characterized in that, also comprises:
Store selected this temperature/rotating speed conversion table in a storage unit of this system.
7. fan rotational frequency control method as claimed in claim 6 is characterized in that this storage unit comprises nonvolatile memory.
8. fan rotational frequency control method as claimed in claim 1 is characterized in that, this user demand comprises a serviceability temperature demand and a use noise demand.
9. fan rotational frequency control method as claimed in claim 8 is characterized in that, selects the step of those temperature/rotating speed conversion table to comprise:
This temperature requirements of this serviceability temperature demand and those temperature/rotating speed conversion table relatively; And
Select its temperature requirements to satisfy this serviceability temperature demand and be best this temperature/rotating speed conversion table.
10. fan rotational frequency control method as claimed in claim 9 is characterized in that, this serviceability temperature demand comprises this patient temperature upper limit of system.
11. fan rotational frequency control method as claimed in claim 8 is characterized in that, selects the step of those temperature/rotating speed conversion table to comprise:
Relatively should use this noise demand of noise demand and those temperature/rotating speed conversion table; And
Select this use noise demand of its noise need satisfaction and be best this temperature/rotating speed conversion table.
12. fan rotational frequency control method as claimed in claim 11 is characterized in that, this use noise demand comprises this patient noise higher limit of system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101690349A CN100555148C (en) | 2006-12-12 | 2006-12-12 | Fan rotational frequency control method |
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| CNB2006101690349A CN100555148C (en) | 2006-12-12 | 2006-12-12 | Fan rotational frequency control method |
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| CN101201632A true CN101201632A (en) | 2008-06-18 |
| CN100555148C CN100555148C (en) | 2009-10-28 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102679A (en) * | 2009-12-21 | 2011-06-22 | 和硕联合科技股份有限公司 | Control system and method for regulating fan speed dynamically |
| 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 |
| CN102375509A (en) * | 2010-08-17 | 2012-03-14 | 鸿富锦精密工业（深圳）有限公司 | Fan rotating speed control system and method |
| CN102595712A (en) * | 2012-01-17 | 2012-07-18 | 佑图物理应用科技发展(武汉)有限公司 | System and method for controlling radiation of light-emitting diode (LED) focus lamp for stage |
| CN103869101A (en) * | 2012-12-10 | 2014-06-18 | 鸿富锦精密工业（深圳）有限公司 | Verification system and verification method for fan tachometer |
| CN104131989A (en) * | 2013-05-02 | 2014-11-05 | 仁宝电脑工业股份有限公司 | Electronic device and fan control method thereof |
| CN109489190A (en) * | 2018-09-18 | 2019-03-19 | 广东优世联合控股集团股份有限公司 | A kind of regulation method and system of computer room cooling capacity |
| CN112943663A (en) * | 2019-11-26 | 2021-06-11 | 佛山市云米电器科技有限公司 | Fan control method, system, fan and computer readable storage medium |
Families Citing this family (1)
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| CN101797768A (en) * | 2010-04-15 | 2010-08-11 | 江苏瑞诚非金属材料有限公司 | System for refining acid-resistant, high-temperature resistant and high-pressure resistant vitrified brick raw material |
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- 2006-12-12 CN CNB2006101690349A patent/CN100555148C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102102679A (en) * | 2009-12-21 | 2011-06-22 | 和硕联合科技股份有限公司 | Control system and method for regulating fan speed dynamically |
| 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 |
| CN102375509A (en) * | 2010-08-17 | 2012-03-14 | 鸿富锦精密工业（深圳）有限公司 | Fan rotating speed control system and method |
| CN102595712A (en) * | 2012-01-17 | 2012-07-18 | 佑图物理应用科技发展(武汉)有限公司 | System and method for controlling radiation of light-emitting diode (LED) focus lamp for stage |
| CN103869101A (en) * | 2012-12-10 | 2014-06-18 | 鸿富锦精密工业（深圳）有限公司 | Verification system and verification method for fan tachometer |
| CN103869101B (en) * | 2012-12-10 | 2017-03-08 | 李建尧 | The checking system of rotation speed of the fan table and method |
| CN104131989A (en) * | 2013-05-02 | 2014-11-05 | 仁宝电脑工业股份有限公司 | Electronic device and fan control method thereof |
| CN109489190A (en) * | 2018-09-18 | 2019-03-19 | 广东优世联合控股集团股份有限公司 | A kind of regulation method and system of computer room cooling capacity |
| CN112943663A (en) * | 2019-11-26 | 2021-06-11 | 佛山市云米电器科技有限公司 | Fan control method, system, fan and computer readable storage medium |
| CN112943663B (en) * | 2019-11-26 | 2023-02-28 | 佛山市云米电器科技有限公司 | Fan control method, system, fan and computer readable storage medium |
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|---|---|
| CN100555148C (en) | 2009-10-28 |
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