CN101660539B - Method and device for controlling rotating speed of fan - Google Patents
Method and device for controlling rotating speed of fan Download PDFInfo
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- CN101660539B CN101660539B CN2009101768281A CN200910176828A CN101660539B CN 101660539 B CN101660539 B CN 101660539B CN 2009101768281 A CN2009101768281 A CN 2009101768281A CN 200910176828 A CN200910176828 A CN 200910176828A CN 101660539 B CN101660539 B CN 101660539B
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Abstract
The invention discloses a method and a device for controlling the rotating speed of a fan. The method comprises the following steps: arranging the working parameter of the fan; judging whether the difference between the current temperature of the device to be detected reported on a main control board in the system and the alarm temperature corresponds to the preset constraint conditions; if corresponding, judging whether the rotating speed of the current rotating speed of the fan after lowering by the preset adjustment quantity is less than or equal to the preset lowest rotating speed decision value of the fan, if so, adjusting the current rotating speed of the fan to be the lowest rotating speed decision value of the fan, and otherwise, adjusting the current rotating speed of the fan to be the rotating speed after lowering and returning to the step; if not corresponding, judging whether the rotating speed of the current rotating speed of the fan after rising by the preset adjustment quantity is greater than the preset maximum rotating speed, if so, reporting alarm information to the system, and otherwise, adjusting the current rotating speed of the fan to the rotating speed after rising, and adjusting the lowest rotating speed decision value of the fan to be the current rotating speed of the fan. The method provided in the invention can not only ensure safe heat dissipation of the device, but also can minimize the noise generated by the fan of the device.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of fan rotational frequency control method and device.
Background technique
Along with the raising of electronic equipment level of integration, the heat radiation of equipment becomes an important topic.The main radiating mode of electronic equipment is air-cooled at present, and what mainly use is fan.Noise and power consumption in order to reduce equipment adopt speed adjustable fan mostly.Existing fan rotational frequency control method mainly is by setting the rotating speed of several temperature point and fan, according to the temperature that temperature transducer collects fan being adjusted to a certain retaining rotating speed then.Temperature acquisition point also is placed on exhaust outlet more or wind inlet goes out.
Though such controlling method can make fan be operated in a more suitable rotating speed according to the temperature of environment, redundancy is still bigger, and noise is still bigger.And the temperature acquisition point is placed on exhaust outlet or wind inlet place, and the temperature that collects like this is the working state of each Primary Component of consersion unit the inside accurately.
Summary of the invention
The invention provides a kind of fan rotational frequency control method and device, have in the prior art that the fan rotational frequency control method redundancy is big, noise is big and the working state problem of each Primary Component inside the consersion unit accurately in order to solve.
Concrete, the invention provides a kind of fan rotational frequency control method and device, be applied in the system of the device to be detected that comprises one or more fans and link to each other with described fan, comprising:
After step 1, system power on, the fan work parameter is set;
Step 2, treat system stability after, judge whether master control borad reports in the system the device Current Temperatures to be detected and the difference of alarm temperature meet the preset restriction condition, if, execution in step 3, otherwise, execution in step 4;
Step 3, judge whether the current rotating speed of fan is reduced rotating speed behind the default adjustment amount smaller or equal to default fan minimum speed decision content, if, then the current rotating speed of fan is adjusted into described fan minimum speed decision content, return step 2; Otherwise, the current rotating speed of fan is adjusted into rotating speed after the reduction, return step 2;
Step 4, judge whether the current rotating speed of fan is raise rotating speed behind the default adjustment amount greater than default maximum (top) speed, if, to system's report and alarm information, otherwise, the current rotating speed of fan is adjusted into rotating speed after the rising, and described fan minimum speed decision content is adjusted into the current rotating speed of described fan, return step 2.
Wherein, the fan work parameter being set in the described step 1 is specially:
The adjustment amount of fan initial speed, fan maximum (top) speed, fan minimum speed and rotation speed of the fan is set, and the current rotating speed of initialization fan is the fan initial speed, initialization fan minimum speed decision content is the fan minimum speed.
Further, above-mentioned preset restriction condition is: whether described difference is less than zero.
The device Current Temperatures to be detected that master control borad reports in the described step 2 and the difference of alarm temperature are:
The maximum value of obtaining in the Current Temperatures of the device to be detected of the described master control borad veneer maintenance that veneer reports in the Current Temperatures of the device to be detected of gathering self maintained and difference between alarm temperature and system and the difference between alarm temperature.
Wherein, the Temperature Detector at described master control borad and the veneer device to be detected place by being arranged in self maintained is in advance gathered the Current Temperatures of described device to be detected.
Wherein, described Temperature Detector is a temperature transducer.
Further, in the described step 3 the current rotating speed of fan is adjusted into and also carries out following operation behind the described fan minimum speed decision content:
The timer that triggering system is safeguarded is set the time T that the current rotating speed of described fan remains unchanged, and when described time T arrives, the current rotating speed of fan is adjusted into default fan minimum speed, and the described timer that resets.
The present invention also provides a kind of fan rotation speed control apparatus, comprising:
Parameter set unit is used for after system powers on, and the fan work parameter is set;
The temperature identifying unit after being used to treat system stability, judges whether master control borad reports in the system the device Current Temperatures to be detected and the difference of alarm temperature meet the preset restriction condition, if, trigger rotating speed downward modulation unit, otherwise, trigger rotating speed and raise the unit;
Rotating speed downward modulation unit, be used to judge whether the current rotating speed of fan is reduced rotating speed behind the default adjustment amount smaller or equal to default fan minimum speed decision content, if, then the current rotating speed of fan is adjusted into described fan minimum speed decision content, trigger described temperature identifying unit; Otherwise, the current rotating speed of fan is adjusted into rotating speed after the reduction, trigger described temperature identifying unit;
Rotating speed raises the unit, be used to judge whether the current rotating speed of fan is raise rotating speed behind the default adjustment amount greater than default maximum (top) speed, if, to system's report and alarm information, otherwise, the current rotating speed of fan is adjusted into rotating speed after the rising, and described fan minimum speed decision content is adjusted into the current rotating speed of described fan, trigger described temperature identifying unit.
Wherein, described parameter set unit is provided with the adjustment amount of fan initial speed, fan maximum (top) speed, fan minimum speed and rotation speed of the fan, and the current rotating speed of initialization fan is that fan initial speed, initialization fan minimum speed decision content are the fan minimum speed.
Described rotating speed downward modulation unit, also be used for after current rotating speed is adjusted into described fan minimum speed decision content with fan, the timer that triggering system is safeguarded, set the time T that the current rotating speed of described fan remains unchanged, and when described time T arrives, the current rotating speed of fan is adjusted into default fan minimum speed, and the described timer that resets.
Compared with prior art, the present invention has the following advantages:
(1) method provided by the invention, all device to be detected places are equipped with temperature detecting point, and alarm according to the temperature of each device to be detected, the most direct working state of reacting equipment, can control the rotating speed of fan more accurately, avoided the drawing up trouble of ambient temperature and rotation speed of the fan curve can reduce Redundancy Design again to greatest extent.
(2) method provided by the invention, only otherwise temperature warning occurs, rotation speed of the fan will reduce always, and it is more little to adjust step-length, and the rotating speed of fan just can approaching more minimum effective value.Do like this, both guaranteed the security of system heat radiation, make the rotating speed of fan can minimize the noise of system near the minimum effective value of wind speed all the time again, reduced the power consumption of system simultaneously.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technological scheme of the prior art, to introduce simply the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of a kind of fan rotational frequency control method provided by the invention;
Fig. 2 is the flow chart of the control rotation speed of the fan of fan control board in the embodiment of the invention;
Fig. 3 is the corresponding relation figure of rotation speed of the fan and temperature in the embodiment of the invention;
Fig. 4 is the structural drawing of a kind of fan rotation speed control apparatus provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technological scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiments.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment who is obtained under the creative work prerequisite.
Big based on the fan rotational frequency control method redundancy that exists in the prior art, noise is big and the working state problem of each Primary Component inside the consersion unit accurately, the invention provides a kind of fan rotational frequency control method and device.
Concrete, the invention provides a kind of fan rotational frequency control method, be applied in the system of the device to be detected that comprises one or more fans and link to each other with described fan, as shown in Figure 1, may further comprise the steps:
After step S101, system power on, the fan work parameter is set.
Wherein, the fan work parameter is set to be specially: the adjustment amount of fan initial speed, fan maximum (top) speed, fan minimum speed and rotation speed of the fan is set, and the current rotating speed of initialization fan is that fan initial speed, initialization fan minimum speed decision content are the fan minimum speed.
Step S102, treat system stability after, judge whether master control borad reports in the system the device Current Temperatures to be detected and the difference of alarm temperature meet the preset restriction condition, if, execution in step S103, otherwise, execution in step S104;
Wherein, the preset restriction condition is whether described difference is less than zero.
Step S103, judge whether the current rotating speed of fan is reduced rotating speed behind the default adjustment amount smaller or equal to default fan minimum speed decision content, if, the current rotating speed of fan is adjusted into fan minimum speed decision content, return step S102; Otherwise, the current rotating speed of fan is adjusted into rotating speed after the reduction, return step S102;
Step S104, judge whether the current rotating speed of fan is raise rotating speed behind the default adjustment amount greater than default maximum (top) speed, if, to system's report and alarm information, otherwise, the current rotating speed of fan is adjusted into rotating speed after the rising, and fan minimum speed decision content is adjusted into the current rotating speed of fan after heightening, return step S102.
Method provided by the invention, temperature according to each device to be detected is alarmed, the most direct working state of reacting equipment, can control the rotating speed of fan more accurately, the trouble of avoided drawing up ambient temperature and rotation speed of the fan curve can reduce Redundancy Design again to greatest extent, and only otherwise temperature warning occurs, rotation speed of the fan will reduce always, and it is more little to adjust step-length, and the rotating speed of fan just can approaching more minimum effective value.Therefore both guarantee the security of system heat radiation, and made the rotating speed of fan can minimize the noise of system near the minimum effective value of wind speed all the time again, reduced the power consumption of system simultaneously.
Elaborate the specific implementation process of method provided by the invention below by a specific embodiment.
The embodiment of the invention is being that example illustrates specific implementation process of the present invention on the communication apparatus that is applied to communication machine room.Concrete, communication apparatus inside comprises master control borad, fan control board and some veneers.Temperature detecting point is laid in Primary Component on master control borad and each veneer (that is, above-mentioned device to be detected) and locates.
Wherein, temperature detecting point can be thermometric devices such as temperature transducer; Primary Component refers to heating value is big in system device or to the more sensitive device of ambient temperature, can determine by hot emulation in the design phase.
Embodiment one, and present embodiment is aimed at the implementation methods of the unified control of all fans in the system, and this method is useful in the less mini system of fan demand usually, can not be applied in the more big system of fan demand but do not get rid of.
Concrete, the core concept of present embodiment is: each veneer and master control borad are gathered the Current Temperatures of Primary Component by temperature detecting point, and subtract each other with each Primary Component preset alarm temperature and to get maximum value, each veneer reports master control borad with the maximum value of obtaining, master control borad compares self gathering the maximum difference that the difference obtain and veneer report, and reports fan control board after obtaining the maximum value in all differences.Whether fan control board judges less than zero whether all veneers can both dispel the heat safely in the system, and the rotating speed of fan is adjusted according to judged result by the maximum value that judgement reports.
Wherein, choosing of alarm temperature mainly is that the result of the hot emulation of operating temperature range coupling system of giving according to the device data handbook obtains, and can stay certain surplus when choosing on this basis.
Concrete, the control flow chart of fan control board in the present embodiment as shown in Figure 2, may further comprise the steps:
After step S201, fan control board power on, set the preset parameter value and the variable element of fan.
Wherein, preset parameter comprises: the initial speed Sstart of fan, fan maximum (top) speed Smax, fan minimum speed Smin and rotation speed of the fan are adjusted step-length Sstep;
Variable element comprises: the current rotating speed Sing of fan, rotation speed of the fan transmission value Sing ' and minimum speed decision content Smin ', and the current rotating speed Sing of fan is initialized as Sstart, minimum speed decision content Smin ' is initialized as Smin.
The concrete numerical value of above-mentioned parameter can and select for use the basic parameter of fan to set according to the demand of system, does not specifically limit its value at this.
Step S202, treat rotation speed of the fan evenly, behind the internal system temperature stabilization, master control borad and each veneer collection be the Current Temperatures of corresponding Primary Component with it, and calculates the temperature difference T of the alarm temperature of the Current Temperatures that obtains and each Primary Component.
Step S203, each veneer are got temperature difference maximum value and are reported master control borad, and the temperature difference maximum value that temperature difference T that master control borad obtains self and veneer report compares the maximum value Δ Tmax that obtains all temperature difference, and this Δ Tmax is reported fan control board.
Certainly, in the present embodiment, master control borad also can all report fan control board with all temperature difference T, yet consider when Δ Tmax when zero, other temperature difference T must report peaked mode so adopt in the present embodiment, but not get rid of the situation that reports all temperature difference T less than zero.
Whether step S204, fan control board judge Δ Tmax less than zero, if, execution in step S205, otherwise, execution in step S209.
Step S205, when Δ Tmax less than zero the time, illustrate that all Primary Components can both trouble free service, the current rotating speed of fan is reduced Sstep, i.e. Sing '=Sing-Sstep.
Need to prove that the reduction of this moment is not with the real reduction of rotating speed when front fan, but for follow-up judgement, the calculating process of fan control intralamellar part.
Step S206, whether judge Sing ' smaller or equal to minimum speed decision content Smin ', if, execution in step S207, otherwise, execution in step S208.
Step S207, the current rotating speed of fan are set to Sing=Smin ', execution in step S213, and while execution in step S202.
Step S208, the current rotating speed of fan are set to Sing=Sing ', return step S202.
Step S209, when Δ Tmax greater than zero the time, illustrate that rotation speed of the fan is too low, system's safety for a long time dispels the heat, with rotation speed of the fan raise Sstep, i.e. Sing '=Sing+Sstep.
Need to prove that the rising of this moment is not with the real rising of rotating speed when front fan, but for follow-up judgement, the calculating process of fan control intralamellar part.
Step S210, whether judge Sing ' greater than Smax, if, execution in step S211, otherwise, execution in step S212.
Step S211, report electric alarm information under the veneer to system, flow process finishes.
Step S212, the current rotating speed of fan are set to Sing=Sing ', and adjust minimum speed decision content Smin '=Sing, return step S202.
The timer of safeguarding in step S213, the triggering system.
Step S214, set the steady operation time T that Smin ' remains unchanged by timer.
Step S215, when timing T arrives, setting Smin ' is Smin, and the timer that resets.
Wherein, if timer is not counted completely above-mentioned steady operation time T, but variation has taken place in rotation speed of the fan, and timer also should reset.
Need to prove that in above-mentioned steady operation time T, fan control board is still carried out the said temperature deterministic process, when only the Current Temperatures that detects Primary Component at fan control board is higher than alarm temperature, the timer that just resets returns step S202, carries out the rotating speed adjustment; Otherwise fan still is operated under the current steady-state speed.
Above-mentioned steps S214 and S215 vibration occurs for fear of rotation speed of the fan, need Smin ' is set at the current rotating speed of fan in this step.If the problem that rotation speed of the fan can't be reduced again will occur but Smin ' remains on current rotating speed always, thus Smin ' after fan stable operation a period of time, Smin ' recalls to Smin, at this moment control system can start the rotation speed of the fan adjustment of a new round.
Need to prove, the minimum Smin that drops to of rotation speed of the fan, if under the lower situation of ambient temperature, Sing drops to Smin ' always and temperature warning still do not occur, then rotation speed of the fan just is arranged on Smin ', owing to do not adjust Smin ' this moment, so Smin ' equals fan minimum speed Smin, in the embodiment of the invention, the relation of rotation speed of the fan and temperature as shown in Figure 3.
Embodiment two, present embodiment is that system is divided into a plurality of subtense angles, each subtense angle can be controlled the implementation methods of rotation speed of the fan separately, this method is useful in the bigger complex system usually, bigger such as the internal system space, and it is inhomogeneous to generate heat, and this method helps rotation speed of the fan is minimized more, reduces noise.
Wherein, in each subtense angle one or more fans can be arranged, each subtense angle is realized control to rotation speed of the fan by fan control board.Concrete, the controlling method of described fan control board is identical with step in the specific embodiment one, does not do at this and gives unnecessary details.
The method that the embodiment of the invention provides, all temperature detecting point are laid in the detector place, alarm according to the temperature of each Primary Component, and the most direct working state of reacting equipment can be controlled the rotating speed of fan more accurately.Avoided the drawing up trouble of ambient temperature and rotation speed of the fan curve can reduce Redundancy Design again to greatest extent; Only otherwise temperature warning occurs, rotation speed of the fan will reduce always, and step-length Sstep is more little, and the rotating speed of fan just can approaching more minimum effective value.Do like this, both guaranteed the security of system heat radiation, make the rotating speed of fan can minimize the noise of system near the minimum effective value of wind speed all the time again, reduced the power consumption of system simultaneously.
The present invention also provides a kind of fan rotation speed control apparatus, as shown in Figure 4, comprising:
Parameter set unit 410 is used for after system powers on, and the fan work parameter is set;
Rotating speed downward modulation unit 430, be used to judge whether the current rotating speed of fan is reduced rotating speed behind the default adjustment amount smaller or equal to default fan minimum speed decision content, if, then the current rotating speed of fan is adjusted into fan minimum speed decision content, trigger temperature identifying unit 420; Otherwise, the current rotating speed of fan is adjusted into rotating speed after the reduction, trigger temperature identifying unit 420;
Rotating speed raises unit 440, be used to judge whether the current rotating speed of fan is raise rotating speed behind the default adjustment amount greater than default maximum (top) speed, if, to system's report and alarm information, otherwise, the current rotating speed of fan is adjusted into rotating speed after the rising, and fan minimum speed decision content is adjusted into the current rotating speed of fan, trigger temperature identifying unit 420.
Wherein, parameter set unit 420 is provided with the adjustment amount of fan initial speed, fan maximum (top) speed, fan minimum speed and rotation speed of the fan, and the current rotating speed of initialization fan is that fan initial speed, initialization fan minimum speed decision content are the fan minimum speed.
Rotating speed downward modulation unit 430, also be used for after current rotating speed is adjusted into fan minimum speed decision content with fan, the timer that triggering system is safeguarded, set the time T that the current rotating speed of fan remains unchanged, and when time T arrives, the current rotating speed of fan is adjusted into default fan minimum speed, and the timer that resets.
Based on above-mentioned technical characteristics, if timer is not counted completely above-mentioned time T, but variation has taken place in rotation speed of the fan, and rotating speed downward modulation unit 430 also resets timer.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. a fan rotational frequency control method is applied in the system of the device to be detected that comprises one or more fans and link to each other with described fan, it is characterized in that, comprising:
After step 1, system power on, the fan work parameter is set;
Step 2, treat system stability after, judge whether master control borad reports in the system the device Current Temperatures to be detected and the difference of alarm temperature meet the preset restriction condition, if, execution in step 3, otherwise, execution in step 4;
Step 3, judge whether the current rotating speed of fan is reduced rotating speed behind the default adjustment amount smaller or equal to default fan minimum speed decision content, if, then the current rotating speed of fan is adjusted into described fan minimum speed decision content, return step 2; Otherwise, the current rotating speed of fan is adjusted into rotating speed after the reduction, return step 2;
Step 4, judge whether the current rotating speed of fan is raise rotating speed behind the default adjustment amount greater than default maximum (top) speed, if, to system's report and alarm information, otherwise, the current rotating speed of fan is adjusted into rotating speed after the rising, and described fan minimum speed decision content is adjusted into the current rotating speed of described fan, return step 2.
2. the method for claim 1 is characterized in that, the fan work parameter is set in the described step 1 is specially:
The adjustment amount of fan initial speed, fan maximum (top) speed, fan minimum speed and rotation speed of the fan is set, and the current rotating speed of initialization fan is the fan initial speed, initialization fan minimum speed decision content is the fan minimum speed.
3. method as claimed in claim 1 or 2 is characterized in that, described preset restriction condition is: whether described difference is less than zero.
4. method as claimed in claim 3 is characterized in that, the device Current Temperatures to be detected that master control borad reports in the described step 2 and the difference of alarm temperature are:
The maximum value of obtaining in the Current Temperatures of the device to be detected of the described master control borad veneer maintenance that veneer reports in the Current Temperatures of the device to be detected of gathering self maintained and difference between alarm temperature and system and the difference between alarm temperature.
5. method as claimed in claim 4 is characterized in that, the Temperature Detector at described master control borad and the veneer device to be detected place by being arranged in self maintained is in advance gathered the Current Temperatures of described device to be detected.
6. method as claimed in claim 5 is characterized in that, described Temperature Detector is a temperature transducer.
7. method as claimed in claim 1 or 2 is characterized in that, in the described step 3 the current rotating speed of fan is adjusted into also to carry out following operation behind the described fan minimum speed decision content:
The timer that triggering system is safeguarded is set the time T that the current rotating speed of described fan remains unchanged, and when described time T arrives, the current rotating speed of fan is adjusted into default fan minimum speed, and the described timer that resets.
8. a fan rotation speed control apparatus is applied in the system of the device to be detected that comprises one or more fans and link to each other with described fan, it is characterized in that, comprising:
Parameter set unit is used for after system powers on, and the fan work parameter is set;
The temperature identifying unit after being used to treat system stability, judges whether master control borad reports in the system the device Current Temperatures to be detected and the difference of alarm temperature meet the preset restriction condition, if, trigger rotating speed downward modulation unit, otherwise, trigger rotating speed and raise the unit;
Rotating speed downward modulation unit, be used to judge whether the current rotating speed of fan is reduced rotating speed behind the default adjustment amount smaller or equal to default fan minimum speed decision content, if, then the current rotating speed of fan is adjusted into described fan minimum speed decision content, trigger described temperature identifying unit; Otherwise, the current rotating speed of fan is adjusted into rotating speed after the reduction, trigger described temperature identifying unit;
Rotating speed raises the unit, be used to judge whether the current rotating speed of fan is raise rotating speed behind the default adjustment amount greater than default maximum (top) speed, if, to system's report and alarm information, otherwise, the current rotating speed of fan is adjusted into rotating speed after the rising, and described fan minimum speed decision content is adjusted into the current rotating speed of described fan, trigger described temperature identifying unit.
9. device as claimed in claim 8, it is characterized in that, described parameter set unit is provided with the adjustment amount of fan initial speed, fan maximum (top) speed, fan minimum speed and rotation speed of the fan, and the current rotating speed of initialization fan is that fan initial speed, initialization fan minimum speed decision content are the fan minimum speed.
10. install as claimed in claim 8 or 9, it is characterized in that,
Described rotating speed downward modulation unit, also be used for after current rotating speed is adjusted into described fan minimum speed decision content with fan, the timer that triggering system is safeguarded, set the time T that the current rotating speed of described fan remains unchanged, and when described time T arrives, the current rotating speed of fan is adjusted into default fan minimum speed, and the described timer that resets.
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| CN2009101768281A CN101660539B (en) | 2009-09-21 | 2009-09-21 | Method and device for controlling rotating speed of fan |
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| CN2009101768281A CN101660539B (en) | 2009-09-21 | 2009-09-21 | Method and device for controlling rotating speed of fan |
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| CN101660539A CN101660539A (en) | 2010-03-03 |
| CN101660539B true CN101660539B (en) | 2011-08-10 |
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| CN101865152A (en) * | 2010-06-24 | 2010-10-20 | 中兴通讯股份有限公司 | Abnormal handling method and device for device heat radiator |
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| CN104863688A (en) * | 2015-04-20 | 2015-08-26 | 龙口中宇汽车风扇离合器有限公司 | Stepless speed control strategy, stepless speed control device and electromagnetic fan clutch |
| CN105715575B (en) * | 2016-02-29 | 2017-11-14 | 广东美的环境电器制造有限公司 | Fan and its control method |
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| CN111536067B (en) * | 2020-04-26 | 2022-06-07 | 峰米(北京)科技有限公司 | Fan rotating speed control method and device, electronic equipment and storage medium |
| CN111649440B (en) * | 2020-05-22 | 2021-06-29 | 珠海格力电器股份有限公司 | Fan control method capable of effectively reducing noise, fan and air conditioning unit |
| CN112302985B (en) * | 2020-10-28 | 2022-04-22 | 联想(北京)有限公司 | Fan rotating speed adjusting method and electronic equipment |
| CN113360344B (en) * | 2021-06-18 | 2023-03-21 | 山东云海国创云计算装备产业创新中心有限公司 | Server monitoring method, device, equipment and computer readable storage medium |
| CN113534929B (en) * | 2021-06-30 | 2024-07-05 | 中国长城科技集团股份有限公司 | Method and device for regulating speed of server fan, terminal equipment and storage medium |
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