CN102146931A - Method for controlling fan - Google Patents
Method for controlling fan Download PDFInfo
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- CN102146931A CN102146931A CN2010101139935A CN201010113993A CN102146931A CN 102146931 A CN102146931 A CN 102146931A CN 2010101139935 A CN2010101139935 A CN 2010101139935A CN 201010113993 A CN201010113993 A CN 201010113993A CN 102146931 A CN102146931 A CN 102146931A
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Abstract
The invention provides a method for controlling a fan. The method is applied to an enclosure which comprises the fan, an inlet temperature sensing module and an assembly temperature sensing module. The method for controlling the fan comprises the following steps: sensing an inlet temperature value according to the inlet temperature sensing module so as to judge an inlet temperature range to which the inlet temperature value belongs; judging whether the assembly temperature value is less than the inlet temperature value; increasing the rotation speed of the fan at a rotation speed increasing ratio when the assembly temperature value is less than the inlet temperature value; and finding out the inlet rotation speed regulating ratio and the assembly rotation speed regulating ratio according to an inlet temperature comparison table and an assembly temperature comparison table when the assembly temperature value is not less than the inlet temperature value, and regulating the rotation speed of the fan according to the greater one between the inlet rotation speed regulating ratio and the assembly rotation speed regulating ratio. By applying the method provided by the invention, the back flow phenomenon in the enclosure can be avoided, and when the backflow phenomenon does not happen, the rotation speed of the fan is regulated according the individual temperature value of a sensor.
Description
Technical field
The present invention relates to a kind of controlling method of electronic equipment, relate in particular to a kind of control method for fan.
Background technique
Computer system is in the modern science and technology, influences the technology of human lives's maximum.Computer system mainly by many electrical assemblys as chip and bus that central processing unit (CPU), audio and display chip, south bridge North Bridge chip or the like are different, come data are handled and transmitted.These electrical assemblys are quite fragile, must rely on casing and be coated with the purpose that reaches protection.Yet these electrical assemblys can produce many heat energy in the processing of carrying out data and transmission, if there is not good cooling mechanism, electrical assembly will damage because temperature is too high easily.Therefore, the setting of fan will make casing dispel the heat fast.But, if fan can't go out according to the temperature transducer right judgement in the casing and should operate with which kind of rotating speed, will still easily ignore the electrical assembly temperature that raises of part and can't carry out best heat radiation timely.
Therefore, how to design a new control method for fan, the rotating speed that makes fan judge rightly out and should carry out according to temperature transducer to reach the most effective heat radiation, is an industry problem demanding prompt solution for this reason.
Summary of the invention
Therefore, the invention provides a kind of control method for fan, be applied in the casing, casing comprises fan, inlet temperature sensing module and assembly temperature sensing module, wherein the inlet temperature sensing module is positioned at the inlet of casing, the assembly temperature sensing module is positioned at the inside of casing, and fan is positioned on the enclosure wall of adjacent assemblies temperature sensing module, and control method for fan comprises the following step: according to inlet temperature sensing module sensing inlet temperature value; Judge the inlet temperature scope at inlet temperature value place; According to assembly temperature sensing module sensing component temperature value; The assembly temperature scope at determination component temperature value place; Whether the determination component temperature value is less than the inlet temperature value; And work as the assembly temperature value less than the inlet temperature value, promote the rotating speed of fan with the rotating speed enhancing rate; When the assembly temperature value is not less than the inlet temperature value, by the inlet temperature scope inlet temperature table of comparisons is searched the import speed regulation and by the assembly temperature scope assembly temperature table of comparisons searched the assembly speed regulation respectively, to adjust the rotating speed of fan according to the grater in import speed regulation and the assembly speed regulation.
According to one embodiment of the invention, the assembly temperature sensing module comprises two assembly temperature sensors in fact.Wherein two assembly temperature sensors are distinguished the sensing first assembly temperature value and the second assembly temperature value, and the assembly temperature value is the grater in the first assembly temperature value and the second assembly temperature value.
According to another embodiment of the present invention, when the inlet temperature scope be greater than Celsius 57 the degree and less than Celsius 59 the degree scope the time, the import speed regulation is that first speed regulation is to improve rotating speed, when the inlet temperature scope be greater than Celsius 59 the degree scope the time, the import speed regulation is second speed regulation to improve rotating speed, and wherein second speed regulation is greater than first speed regulation.When the assembly temperature scope be greater than Celsius 85 the degree and less than Celsius 88 the degree scope the time, the assembly speed regulation is that first speed regulation improves rotating speed, when the assembly temperature scope was scope greater than 88 degree Celsius, the assembly speed regulation was that second speed regulation improves rotating speed.When the inlet temperature scope be less than Celsius 55 the degree and greater than Celsius 53 the degree scope the time, the import speed regulation is that the 3rd speed regulation is to reduce rotating speed, when the inlet temperature scope be less than Celsius 53 the degree scope the time, the import speed regulation is the 4th speed regulation to reduce rotating speed, and wherein the absolute value of the 4th speed regulation is greater than the 3rd speed regulation.When the assembly temperature scope be less than Celsius 81 the degree and greater than Celsius 78 the degree scope the time, the assembly speed regulation is that the 3rd speed regulation reduces rotating speed, when the assembly temperature scope was scope less than 78 degree Celsius, the assembly speed regulation was that the 4th speed regulation reduces rotating speed.
According to further embodiment of this invention, when the inlet temperature scope be less than Celsius 57 the degree and greater than Celsius 55 the degree scope the time, the uncomfortable turn over speed of fan.When the assembly temperature scope be less than Celsius 85 the degree and greater than Celsius 81 the degree scope the time, the uncomfortable turn over speed of fan.
According to yet another embodiment of the invention, the minimum value of the rotating speed of fan is about peaked 20%.
Application the invention has the advantages that by judging inlet temperature value and assembly temperature value earlier, to confirm in the casing whether the backflow situation taking place, avoid refluxing when the backflow situation takes place, in time to promote rotation speed of the fan, and view sensor other temperature value is adjusted when the backflow situation does not take place, and reaches above-mentioned purpose easily.
Description of drawings
For above and other objects of the present invention, feature, advantage and embodiment can be become apparent, being described in detail as follows of appended accompanying drawing:
Fig. 1 is the schematic representation of casing of the application control method for fan of one embodiment of the invention;
Fig. 2 is the flow chart of the control method for fan of one embodiment of the invention;
Fig. 3 is in one embodiment of the invention, the inlet temperature table of comparisons is searched the flow chart of import speed regulation by the inlet temperature scope; And
Fig. 4 is in one embodiment of the invention, the assembly temperature table of comparisons is searched the flow chart of assembly speed regulation by the assembly temperature scope.
Wherein, reference character
1: casing 10: import
100: enclosure wall 12: the inlet temperature sensing module
11,13: direction 14: the assembly rest area
16a, 16b: assembly temperature sensor 18: fan
201-207: step 301-309: step
401-409: step
Embodiment
Below will and describe clear explaination spirit of the present invention in detail with accompanying drawing, any those of ordinary skill in the art is after understanding preferred embodiment of the present invention, when can be by the disclosed technology of the present invention, change and modification, and do not break away from spirit of the present invention and scope.
Please refer to Fig. 1, it is a schematic representation of using the casing 1 of control method for fan of the present invention.Casing 1 comprises import 10, inlet temperature sensing module 12, assembly rest area 14, assembly temperature sensing module and fan 18.
18 in fan is arranged on the enclosure wall 100 that is adjacent to the assembly temperature sensing module, with under different temperature scenario, by different rotating speeds, comes the inside of casing 1 is reached best radiating effect.
Please refer to Fig. 2.Fig. 2 is the flow chart of the control method for fan of one embodiment of the invention.As mentioned above, control method for fan can be applicable in as shown in Figure 1 the casing 1.Control method for fan comprises the following step: step 201, and according to inlet temperature sensing module 12 sensing inlet temperature values, that is the temperature value of import 10 1 bands of casing 1.Then, step 202, the inlet temperature scope at judgement inlet temperature value place.In one embodiment, the inlet temperature value can be divided into that 53 degree Celsius are following, 53-55 degree Celsius, 55-57 degree Celsius, 57-59 degree Celsius and above five the inlet temperature scopes of 59 degree Celsius, with the scope of judging inlet temperature value place person why.
Therefore, when at step 205 determination component temperature value during less than the inlet temperature value, execution in step 206 promotes the rotating speed of fan 18 with the rotating speed enhancing rate.For instance, can be the rotating speed enhancing rate that per 250 centiseconds promote 0.5% rotating speed.By such mode, in the time of can taking place to reflux at the air-flow of casing 1, promote the rotating speed of fan 18, so that the circulating direction of air-flow recovers normal rapidly.
And when step 205 determination component temperature value is not less than the inlet temperature value, execution in step 207, by the inlet temperature scope inlet temperature table of comparisons is searched the import speed regulation and by the assembly temperature scope assembly temperature table of comparisons searched the assembly speed regulation respectively, to adjust the rotating speed of fan 18 according to the grater in import speed regulation and the assembly speed regulation.The inlet temperature table of comparisons and the assembly temperature table of comparisons are the tables of comparisons of a temperature and speed regulation, so that fan 18 can be adjusted rotating speed according to this two table of comparisons.And get wherein the grater, represent that promptly fan 18 will meet import 10 and 14 sides that press for most of assembly rest area, so that the radiating efficiency of casing 1 integral body reaches best.
Please refer to Fig. 3.Fig. 3 is among the embodiment, the inlet temperature table of comparisons is searched the flow chart of import speed regulation by the inlet temperature scope.Step 301 judges whether the inlet temperature value is positioned at the scope greater than 59 degree Celsius.When the inlet temperature value is scope greater than 59 degree Celsius, execution in step 302, the import speed regulation is to improve rotating speed with second speed regulation, in one embodiment, second speed regulation is that per 250 centiseconds promote 0.5% rotating speed.When the inlet temperature value was spent less than Celsius 59, step 303 judged whether the inlet temperature value is positioned at greater than 57 degree Celsius and less than Celsius 59 scopes of spending.When the inlet temperature value is during greater than 57 degree Celsius and less than the scope of 59 degree Celsius, execution in step 304, the import speed regulation is to improve rotating speed with first speed regulation, in one embodiment, first speed regulation is to promote 0.5% rotating speed in per 15 seconds.In general second speed regulation greater than first speed regulation, with when temperature is higher, can promote rotating speed to the preferable degree of radiating efficiency in real time.
When the inlet temperature value was spent less than Celsius 57, step 305 judged whether the inlet temperature value is positioned at less than 57 degree Celsius and greater than Celsius 55 scopes of spending.When the inlet temperature value is during less than 57 degree Celsius and greater than the scope of 55 degree Celsius, expression this moment, inlet temperature was a normal numerical value, and therefore in step 306,18 rotating speed is fanned in the uncomfortable rectification campaign.When the inlet temperature value was spent less than Celsius 55, step 307 judged whether the inlet temperature value is positioned at less than 55 degree Celsius and greater than Celsius 53 scopes of spending.When the inlet temperature value be less than Celsius 55 the degree and greater than Celsius 53 the degree scope the time, execution in step 308, the import speed regulation is to reduce rotating speed with the 3rd speed regulation, in one embodiment, the 3rd speed regulation is to promote-0.5% rotating speed for per 60 seconds, and meaning is the rotating speed of reduction by 0.5% in per 60 seconds.When the inlet temperature scope be less than Celsius 53 the degree scope the time, execution in step 309, import speed regulation are to reduce rotating speed with the 4th speed regulation, in one embodiment, the 4th speed regulation is the rotating speed of lifting-0.5% in per 10 seconds, and meaning is the rotating speed of reduction by 0.5% in per 10 seconds.The the 3rd and the 4th speed regulation is a negative value, and to reduce the rotating speed of fan 18, in general, the absolute value of the 4th speed regulation with when temperature is low, just reduces rotating speed greater than the absolute value of the 3rd speed regulation significantly.
In one embodiment, the minimum value of the rotating speed of fan 18 is about peaked 20%.Therefore, when fan 18 downgrades rotating speed according to the 3rd or the 4th speed regulation, can not make rotating speed be lower than peaked 20%.
It is noted that in the above-described embodiments, the ratio of the numerical value of each speed regulation, the setting of temperature range and rotating speed maximum value and minimum value can have different mode of executions in different embodiments according to circumstances, is not limit by above-mentioned numerical value.
Please refer to the 4th figure.The 4th figure is among the embodiment, the assembly temperature table of comparisons is searched the flow chart of assembly speed regulation by the assembly temperature scope.Whether step 401, determination component temperature value are positioned at the scope greater than 88 degree Celsius.When the assembly temperature value is scope greater than 88 degree Celsius, execution in step 402, the assembly speed regulation improves rotating speed with aforesaid second speed regulation.When the assembly temperature value be less than Celsius 88 the degree scope the time, step 403, the determination component temperature value whether be positioned at greater than Celsius 85 the degree and less than Celsius 88 the degree scopes.When the assembly temperature value is during greater than 85 degree Celsius and less than the scope of 88 degree Celsius, execution in step 404, the assembly speed regulation improves rotating speed with aforesaid first speed regulation.
When the assembly temperature value is spent less than Celsius 85, step 405, whether the determination component temperature value is positioned at less than 85 degree Celsius and greater than Celsius 81 scopes of spending.When the assembly temperature value is during less than 85 degree Celsius and greater than the scope of 81 degree Celsius, expression this moment, assembly temperature was a normal numerical value, and therefore in step 406,18 rotating speed is fanned in the uncomfortable rectification campaign.When the assembly temperature value is spent less than Celsius 81, step 407, whether the determination component temperature value is positioned at less than 81 degree Celsius and greater than Celsius 78 scopes of spending.When the assembly temperature value is during less than 81 degree Celsius and greater than the scope of 78 degree Celsius, execution in step 408, the assembly speed regulation reduces rotating speed with above-mentioned the 3rd speed regulation.When the assembly temperature scope is scope less than 78 degree Celsius, execution in step 409, the assembly speed regulation reduces rotating speed with the 4th above-mentioned speed regulation.
It is noted that in the foregoing description, the ratio of the numerical value of each speed regulation, the setting of temperature range and rotating speed maximum value and minimum value can be according to circumstances and in the embodiment of difference different mode of executions is arranged, and do not limit by above-mentioned numerical value.
Therefore, the maximum in above-mentioned import and the assembly speed regulation will be when the assembly temperature value be not less than the inlet temperature value, in order to adjust the rotating speed of fan 18.
Application the invention has the advantages that by judging inlet temperature value and assembly temperature value earlier, to confirm in the casing whether the backflow situation taking place, avoid refluxing when the backflow situation takes place, in time to promote rotation speed of the fan, and view sensor other temperature value is adjusted when the backflow situation does not take place.
Though the present invention discloses as above with by way of example; right its is not in order to limit the present invention; any those of ordinary skill in the art; without departing from the spirit and scope of the present invention; when can being used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking the scope that claims define.
Claims (10)
1. control method for fan, be applied in the casing, described casing comprises a fan, an inlet temperature sensing module and an assembly temperature sensing module, wherein said inlet temperature sensing module is positioned at an inlet of described casing, described assembly temperature sensing module is positioned at an inside of described casing, described fan is positioned on the enclosure wall of contiguous described assembly temperature sensing module, it is characterized in that described control method for fan comprises the following step:
According to described inlet temperature sensing module sensing one inlet temperature value;
Judge an inlet temperature scope at described inlet temperature value place;
According to described assembly temperature sensing module sensing one assembly temperature value;
Judge an assembly temperature scope at described assembly temperature value place;
Judge that whether described assembly temperature value is less than described inlet temperature value; And
When described assembly temperature value less than described inlet temperature value, promote the rotating speed of described fan with a rotating speed enhancing rate;
When described assembly temperature value is not less than described inlet temperature value, by described inlet temperature scope the one inlet temperature table of comparisons is searched an import speed regulation and by described assembly temperature scope the one assembly temperature table of comparisons searched an assembly speed regulation respectively, to adjust the rotating speed of described fan according to the grater in described import speed regulation and the described assembly speed regulation.
2. control method for fan according to claim 1 is characterized in that, described assembly temperature sensing module comprises two assembly temperature sensors in fact.
3. control method for fan according to claim 1, it is characterized in that, described two assembly temperature sensors are sensing one first assembly temperature value and one second assembly temperature value respectively, and described assembly temperature value is the grater in described first assembly temperature value and the described second assembly temperature value.
4. control method for fan according to claim 1, it is characterized in that, when described inlet temperature scope be one greater than Celsius 57 the degree and less than Celsius 59 the degree scope the time, described import speed regulation is that one first speed regulation is to improve rotating speed, when described inlet temperature scope be one greater than Celsius 59 the degree scope the time, described import speed regulation is one second speed regulation to improve rotating speed, and wherein said second speed regulation is greater than described first speed regulation.
5. control method for fan according to claim 4, it is characterized in that, when described assembly temperature scope be one greater than Celsius 85 the degree and less than Celsius 88 the degree scope the time, described assembly speed regulation is that described first speed regulation is to improve rotating speed, when described assembly temperature scope is one during greater than the scope of 88 degree Celsius, described assembly speed regulation is described second speed regulation to improve rotating speed.
6. control method for fan according to claim 1, it is characterized in that, when described inlet temperature scope be one less than Celsius 55 the degree and greater than Celsius 53 the degree scope the time, described import speed regulation is that one the 3rd speed regulation is to reduce rotating speed, when described inlet temperature scope be one less than Celsius 53 the degree scope the time, described import speed regulation is one the 4th speed regulation to reduce rotating speed, and the absolute value of wherein said the 4th speed regulation is greater than the absolute value of described the 3rd speed regulation.
7. control method for fan according to claim 1, it is characterized in that, when described assembly temperature scope be one less than Celsius 81 the degree and greater than Celsius 78 the degree scope the time, described assembly speed regulation is that described the 3rd speed regulation is to reduce rotating speed, when described assembly temperature scope is one during less than the scope of 78 degree Celsius, described assembly speed regulation is described the 4th speed regulation to reduce rotating speed.
8. control method for fan according to claim 1 is characterized in that, when described inlet temperature scope be one less than Celsius 57 the degree and greater than Celsius 55 the degree scope the time, the uncomfortable turn over speed of described fan.
9. control method for fan according to claim 1 is characterized in that, when described assembly temperature scope be one less than Celsius 85 the degree and greater than Celsius 81 the degree scope the time, the uncomfortable turn over speed of described fan.
10. control method for fan according to claim 1 is characterized in that, a minimum value of the rotating speed of described fan is about peaked 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101139935A CN102146931A (en) | 2010-02-05 | 2010-02-05 | Method for controlling fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101139935A CN102146931A (en) | 2010-02-05 | 2010-02-05 | Method for controlling fan |
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| Publication Number | Publication Date |
|---|---|
| CN102146931A true CN102146931A (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101139935A Pending CN102146931A (en) | 2010-02-05 | 2010-02-05 | Method for controlling fan |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104797118A (en) * | 2014-01-16 | 2015-07-22 | 纬创资通股份有限公司 | Secondary fan system, server and secondary fan system control method |
| CN112324691A (en) * | 2020-07-10 | 2021-02-05 | 北京京东尚科信息技术有限公司 | Control method and device for airflow driving device, power supply device and electronic equipment |
-
2010
- 2010-02-05 CN CN2010101139935A patent/CN102146931A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104797118A (en) * | 2014-01-16 | 2015-07-22 | 纬创资通股份有限公司 | Secondary fan system, server and secondary fan system control method |
| CN112324691A (en) * | 2020-07-10 | 2021-02-05 | 北京京东尚科信息技术有限公司 | Control method and device for airflow driving device, power supply device and electronic equipment |
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Application publication date: 20110810 |