CN106211715B - A kind of control method for fan and device - Google Patents
A kind of control method for fan and device Download PDFInfo
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- CN106211715B CN106211715B CN201610666097.9A CN201610666097A CN106211715B CN 106211715 B CN106211715 B CN 106211715B CN 201610666097 A CN201610666097 A CN 201610666097A CN 106211715 B CN106211715 B CN 106211715B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20718—Forced ventilation of a gaseous coolant
- H05K7/20736—Forced ventilation of a gaseous coolant within cabinets for removing heat from server blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/007—Conjoint control of two or more different functions
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20836—Thermal management, e.g. server temperature control
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The present invention relates to field of computer technology more particularly to a kind of control method for fan and device, including：The temperature that target board is obtained by the temperature sampler on the fan frame of fan radiating system determines the corresponding expectation rotation speed of the fan of the temperature of target board according to the correspondence of preset temperature and rotation speed of the fan；According to determining expectation rotation speed of the fan, all fans in control targe fan disk synchronize rotation.Advantageous effect specific as follows of the embodiment of the present invention：First, the decision of cooling system is transferred to fan disk by management board, the rotation speed of the fan in different fan disks is entirely to be determined according to the temperature of the corresponding board of fan disk, realizes and gives on demand, can reduce the energy consumption of entire cooling system；Second, synchronous control is implemented to the fan in same fan disk, best heat dissipation effect can be reached with maximum thermal air quantity.
Description
Technical field
The present invention relates to field of computer technology more particularly to a kind of control method for fan and device.
Background technology
As communication equipment management is more and more intelligent, higher inspection also proposed to the temperature control system of cabinet-type interchanger
It surveys and control requires.Existing cabinet-type communication equipment is usually all managing mainly using radiator fan as main heat dissipation
Corresponding monitoring temperature and fan control center are designed on plate, can voluntarily adjust radiator fan according to complete machine temperature situation
Rotating speed reaches heat dissipation purpose.
Centralization is currently used control mode, i.e., all fan disks accept unified instruction, unified to adjust.And with
Cabinet-type equipment size increases, and air duct is deepened, and single fan cannot be satisfied cooling requirements；For reinforce radiate, usually by two or
The multiple fans of person are superposed to a fan disk to use, so as to increase wind-force to meet machine system cooling requirements.
In using centerized fusion mode, being superimposed in the cabinet of fan mainly has the following disadvantage：First, such control
Mode processed is calculated rotation speed of the fan according to most hot plate card cooling requirements in cabinet, after instruction issuing in all fan disks
Fan is all run according to this rotating speed, increases energy consumption and noise；Second, system electrification or reset after management board carry out just
Beginningization, initialization time is generally longer, and at least at 20 seconds or more, temperature control system does not enter normal work before initialization is completed
Stage, thus caused the preset rotation speed of the fan of machine that may cannot be satisfied the cooling requirements of board, it is possible to cause board at this
Damage in the section time；Third does not do any processing, between the fan of superposition to the fan being superimposed in the same fan disk
It can interfere with each other, such as after desired rotating speed is assigned, the rotation speed of the fan of superposition can be led in rotation process due to interfering with each other
Rotating speed is caused gradually to be more than desired rotating speed, such that the air quantity of fan disk can not maximize and influence heat dissipation effect, and
Since the raising of rotating speed can also reduce service life, the increase noise of fan, customer experience is influenced.
In conclusion the prior art, using management board as the centralized fan cooling method of core, there are system energy consumption height, dissipate
The bad technical problem of thermal effect.
Invention content
A kind of control method for fan of present invention offer and device, to solve the prior art using management board as the concentration of core
Formula fan cooling method, there are system energy consumption height, the bad technical problems of heat dissipation effect.
On the one hand, the embodiment of the present invention provides a kind of control method for fan, including：
The temperature of target board is obtained by the temperature sampler on the fan frame of fan radiating system, wherein the wind
It includes at least one fan disk to fan cooling system, and the fan in each fan disk is for realizing to the corresponding board of the fan disk
It radiates；
According to the correspondence of preset temperature and rotation speed of the fan, the corresponding expectation wind of the temperature of the target board is determined
Fan rotating speed；
According to the determining expectation rotation speed of the fan, all fans in control targe fan disk synchronize rotation, institute
It is fan disk corresponding with the target board to state target fan disk.
Optionally, described according to the determining expectation rotation speed of the fan, all fans in control targe fan disk carry out
It rotates synchronously, including：
Using the expectation rotation speed of the fan as the expectation rotating speed of the first fan, and turned according to the expectation of first fan
Speed controls first fan and is rotated, and first fan is the fan that rotating speed is most slow in the target fan disk；
The currently practical rotating speed of first fan is obtained, and institute is controlled according to the currently practical rotating speed of first fan
All fans in target fan disk in addition to first fan are stated to be rotated.
Optionally, described to be controlled in the target fan disk except described the according to the currently practical rotating speed of first fan
All fans except one fan are rotated, including：
Using the currently practical rotating speed of first fan as the expectation rotating speed of the second fan, second fan is described
Fan in target fan disk in addition to first fan；
According to the expectation rotating speed of second fan, controls second fan and rotated.
Optionally, it is described using the expectation rotation speed of the fan as the expectation rotating speed of the first fan before, further include：
According to the correspondence of preset rotating speed and rotating speed section, the corresponding rotating speed area of the expectation rotation speed of the fan is determined
Between；
It is corresponding with pid control parameter according to the corresponding rotating speed section of the expectation rotation speed of the fan and preset rotating speed section
Relationship determines the corresponding pid control parameter of the expectation rotation speed of the fan；
The expectation rotating speed according to first fan controls first fan and is rotated, including：
According to the expectation rotating speed of first fan and the corresponding pid control parameter of the expectation rotation speed of the fan, institute is controlled
The first fan is stated to be rotated；
Described controlled according to the currently practical rotating speed of first fan removes first fan in the target fan disk
Except all fans rotated, including：
According to the currently practical rotating speed of first fan and the corresponding pid control parameter control of the expectation rotation speed of the fan
All fans in the target fan disk in addition to first fan are rotated.
Optionally, temperature sampler on the fan frame by fan radiating system obtain target board temperature it
Afterwards, further include：
If it is determined that the temperature of the target board is not less than lower electro-temperature threshold value, then notify management board to the target board
Carry out lower electric treatment.
On the other hand, the embodiment of the present invention provides a kind of fan control device, including：
Collecting unit, the temperature for obtaining target board by the temperature sampler on the fan frame of fan radiating system
Degree, wherein the fan radiating system includes at least one fan disk, and the fan in each fan disk is for realizing to the wind
The corresponding board of fanning tray radiates；
Determination unit determines the temperature of the target board for the correspondence according to preset temperature and rotation speed of the fan
Spend corresponding expectation rotation speed of the fan；
Control unit, for according to the determining expectation rotation speed of the fan, all fans in control targe fan disk into
Row rotates synchronously, and the target fan disk is fan disk corresponding with the target board.
Optionally, described control unit is specifically used for：
Using the expectation rotation speed of the fan as the expectation rotating speed of the first fan, and turned according to the expectation of first fan
Speed controls first fan and is rotated, and first fan is the fan that rotating speed is most slow in the target fan disk；
The currently practical rotating speed of first fan is obtained, and institute is controlled according to the currently practical rotating speed of first fan
All fans in target fan disk in addition to first fan are stated to be rotated.
Optionally, described control unit is additionally operable to：
Using the currently practical rotating speed of first fan as the expectation rotating speed of the second fan, second fan is described
Fan in target fan disk in addition to first fan；
According to the expectation rotating speed of second fan, controls second fan and rotated.
Optionally, described device further includes control parameter determination unit, is specifically used for：
According to the correspondence of preset rotating speed and rotating speed section, the corresponding rotating speed area of the expectation rotation speed of the fan is determined
Between；
It is corresponding with pid control parameter according to the corresponding rotating speed section of the expectation rotation speed of the fan and preset rotating speed section
Relationship determines the corresponding pid control parameter of the expectation rotation speed of the fan；
Described control unit is specifically used for：
According to the expectation rotating speed of first fan and the corresponding pid control parameter of the expectation rotation speed of the fan, institute is controlled
The first fan is stated to be rotated；
According to the currently practical rotating speed of first fan and the corresponding pid control parameter control of the expectation rotation speed of the fan
All fans in the target fan disk in addition to first fan are rotated.
Optionally, described device further includes Alarm Unit, is specifically used for：
If it is determined that the temperature of the target board is not less than lower electro-temperature threshold value, then notify management board to the target board
Carry out lower electric treatment.
The embodiment of the present invention obtains the temperature of target board by the temperature sampler on the fan frame of fan radiating system
Degree, wherein the fan radiating system includes at least one fan disk, and the fan in each fan disk is for realizing to the wind
The corresponding board of fanning tray radiates；According to the correspondence of preset temperature and rotation speed of the fan, the target board is determined
The corresponding expectation rotation speed of the fan of temperature；According to the determining expectation rotation speed of the fan, all fans in control targe fan disk
Rotation is synchronized, the target fan disk is fan disk corresponding with the target board.The embodiment of the present invention is specific as follows
Advantageous effect：First, the decision of cooling system is transferred to fan disk, release management plate part resource, and wind by management board
Fanning tray carries out temperature detection and rotating speed decision just for corresponding board, thus the rotation speed of the fan in different fan disks is entirely
According to the temperature of the corresponding board of fan disk come what is determined, realize given on demand, it is possible to reduce the energy consumption of entire cooling system；
Second, device power-up or reset after, fan disk can be done directly monitoring temperature and itself rotation speed of the fan to respectively corresponding to board
Adjustment improve system without carrying out the adjusting of monitoring temperature and rotation speed of the fan again after waiting for management board initialization
Reliability；Third is implemented synchronous control to the fan in same fan disk and is reached so as to maximum thermal air quantity
Best heat dissipation effect.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without having to pay creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is a kind of control method for fan flow chart provided in an embodiment of the present invention；
Fig. 2 is a kind of control method for fan detail flowchart provided in an embodiment of the present invention；
Fig. 3 is cooling system circuit theory schematic diagram provided in an embodiment of the present invention；
Fig. 4 is temperature collecting cell structural schematic diagram provided in an embodiment of the present invention；
Fig. 5 is fan synchronous control unit structural schematic diagram provided in an embodiment of the present invention；
Fig. 6 is synchronous control logical construction schematic diagram provided in an embodiment of the present invention；
Fig. 7 is that fan provided in an embodiment of the present invention rotates synchronously method flow schematic diagram；
Fig. 8 is a kind of fan control device schematic diagram provided in an embodiment of the present invention.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
In embodiments of the present invention, the higher management of cooling system is transferred to fan disk by management board, in device power-up
Or after resetting, management board is initialized, and loads various configurations, while the fan disk in cooling system is completed to respective respective panels
The adjustment of the monitoring temperature of card and itself rotation speed of the fan.Also, it is directed to each fan of superposition fan in embodiments of the present invention
Disk also adds synchronous control so that is superimposed the rotating speed of fan with it is expected that rotating speed is identical, interfering with each other between reduction fan is maximum
Change air quantity.
The embodiment of the present invention is described in further detail with reference to the accompanying drawings of the specification.As shown in Figure 1, the present invention is implemented
The control method for fan that example provides, including：
Step 101, the temperature that target board is obtained by the temperature sampler on the fan frame of fan radiating system,
In, the fan radiating system includes at least one fan disk, and the fan in each fan disk is for realizing to the fan disk
Corresponding board radiates；
Step 102, according to the correspondence of preset temperature and rotation speed of the fan, determine that the temperature of the target board corresponds to
Expectation rotation speed of the fan；
Step 103, according to the determining expectation rotation speed of the fan, all fans in control targe fan disk synchronize
Rotation, the target fan disk are fan disk corresponding with the target board.
In above-mentioned steps 101, Target Board is obtained by the temperature sampler on the fan frame of fan radiating system first
The temperature of card, wherein the fan radiating system includes at least one fan disk, and the fan in each fan disk is for realizing right
The corresponding board of the fan disk radiates.And in practical application, the fan radiating system can be comprising at least one
A fan frame, each fan frame include at least one fan disk.
For example, in fan radiating system include one or more fan frames, include that there are one wind on each fan frame
Plate, a temperature sampler and one or more fan disks are fanned, wherein temperature sampler is for acquiring the corresponding plate of fan frame
The temperature information of card, fan disk for radiating to corresponding board, and on each fan disk there are one or multiple wind
It fans, in the embodiment of the present invention, fan of the control in the same fan disk is synchronized into rotation, that is, realizes the same fan
Fan in disk with identical rotating speed, corner and is rotated, and rotating speed schedules to last and hopes rotation speed of the fan.
In above-mentioned steps 102, according to the correspondence of preset temperature and rotation speed of the fan, the target board is determined
The corresponding expectation rotation speed of the fan of temperature.It is handled that is, being transmitted through the temperature information come to temperature sampler and doing certain conversion, according to setting
Fixed temperature-rotation speed of the fan curve calculates the rotating speed needed for corresponding fan.Wherein, the conversion of temperature-rotation speed of the fan is not according to
It is different with environment, it is not specifically limited herein, and this technology belongs to the prior art, is not repeated herein.
In above-mentioned steps 103, according to the determining expectation rotation speed of the fan, all fans in control targe fan disk
Rotation is synchronized, the target fan disk is fan disk corresponding with the target board.
It is exemplified below, the technique effect that 101~step 103 of above-mentioned steps is realized.
Assuming that one share 1 fan frame in cooling system, and include 3 fan disks in the fan frame, in each fan disk
All include 2 fans.3 fan disks are respectively fan disk A, fan disk B and fan disk C, and 2 fans in fan disk A
For radiating to 1~board of board 3, for radiating to 4~board of board 7, fan disk C is used for plate fan disk B
Card 8~board 11 radiates.
Multiple temperature sensors are distributed on each board, LM75 temperature sensors can be used for example, temperature passes
Sensor can be used for obtaining the temperature of board, and the temperature information of acquisition is stored in register, be adopted for the temperature in fan frame
Storage obtains temperature information from the register of temperature sensor.
Therefore, when cooling system after the power is turned on, fan frame starts to initialize, and by temperature sampler obtain board 1~
The temperature information of board 11, and respectively according to 1~board of board 3 calculate fan disk 1 in fan expectation rotation speed of the fan, according to
4~board of board 7 calculates the expectation rotation speed of the fan of the fan in fan disk 2, is calculated in fan disk 3 according to 8~board of board 11
Fan expectation rotation speed of the fan, it is assumed that the expectation rotation speed of the fan of the fan in calculated fan disk 1 be rotating speed V1, fan disk
The expectation rotation speed of the fan of fan in 2 is rotating speed V2, and the expectation rotation speed of the fan of the fan in fan disk 3 is rotating speed V3, then basis
Rotating speed V1,2 fans controlled in fan disk 1 synchronize rotation, according to rotating speed V2, control 2 fans in fan disk 2
Rotation is synchronized, according to rotating speed V3,2 fans controlled in fan disk 3 synchronize rotation.
To which the embodiment of the present invention realizes the core using fan frame as cooling system, and realizes different fans
Fan in disk is rotated according to the temperature of corresponding board, is realized control on demand rotation, is saved the energy consumption of cooling system,
Improve the service life of cooling system.
It is described in detail below to controlling the method that multiple fans in the same fan disk synchronize rotation.
In above-mentioned steps 103, according to the determining expectation rotation speed of the fan, all fans in control targe fan disk
Rotation is synchronized, specific implementation is got up there are many kinds of mode, and the present invention is not specifically limited, a kind of mode conduct given below
Embodiment illustrates.
Optionally, described according to the determining expectation rotation speed of the fan, all fans in control targe fan disk carry out
It rotates synchronously, including：Using the expectation rotation speed of the fan as the expectation rotating speed of the first fan, and according to the phase of first fan
It hopes rotating speed, controls first fan and rotated, first fan is the fan that rotating speed is most slow in the target fan disk；
The currently practical rotating speed of first fan is obtained, and the target wind is controlled according to the currently practical rotating speed of first fan
All fans in fanning tray in addition to first fan are rotated.
In above-mentioned realization method, it is first determined the most slow fan of rotating speed in the same fan disk, i.e. the first fan, then
According to the expectation rotation speed of the fan that will be determined in above-mentioned steps 102 as the expectation rotating speed of the first fan, and according to first wind
The expectation rotating speed of fan controls first fan and is rotated.Such as the currently practical rotating speed of the first fan can be obtained, then
It calculates the currently practical rotating speed of the first fan and it is expected the rotating speed residual quantity between rotation speed of the fan, then improved according to the rotating speed residual quantity
Or reduce the rotating speed of the first fan so that the rotating speed of the first fan moves closer to the expectation rotation speed of the fan.
And for other fans in the fan disk in addition to the first fan, then according to the current reality of first fan
All fans that border rotating speed controls in the target fan disk in addition to first fan are rotated.
Herein, it should be noted why select to adjust the fan that rotating speed is most slow in target fan disk first, then
Other fans are adjusted again, are because the slower fan of rotating speed is more easily adjusted, therefore quickly by one in target fan disk
After fan adjusts completion, other fans are also more easily adjusted.
Specifically, it is controlled according to the currently practical rotating speed of first fan and removes first wind in the target fan disk
All fans except fan are rotated, at least following two realization methods：
Mode one
Using the currently practical rotating speed of first fan as the expectation rotating speed of the second fan, second fan is described
Fan in target fan disk in addition to first fan；According to the expectation rotating speed of second fan, control described second
Fan is rotated.
That is, in mode one, the fan (i.e. the second fan) in addition to first fan, with the current of the first fan
Actual speed is used as desired rotating speed, moves closer to the currently practical rotating speed of first fan, and the may be implemented by this way
One fan moves closer to desired rotation speed of the fan, and the second fan is then the actual speed for moving closer to the first fan, to final
The actual speed that all fans in target fan disk can be achieved keeps identical, and or nothing identical as desired rotation speed of the fan
Limit is close, realizes the synchronous rotation of fan.
Mode two
To all fans in the target fan disk in addition to the first fan according to rotating speed from slowly to being ranked up soon,
The more forward rotation speed of the fan that sorts is slower, and the most slow fan of rotating speed is as the first adjustment fan in addition to the first fan, with
The currently practical rotating speed of one fan is used as desired rotating speed, and rotating speed is only faster than the fan work of the first adjustment fan in addition to the first fan
For second adjustment fan, using the currently practical rotating speed of the first adjustment fan as desired rotating speed, the rotating speed in addition to the first fan
The fan for being only faster than second adjustment fan adjusts fan as third, using the currently practical rotating speed of second adjustment fan as the phase
Hope rotating speed, and so on, until the fan adjustment in fan disk finishes.
For example, one 5 fans, respectively fan 1, fan 2, fan 3, fan 4, fan are shared in target fan disk
5, wherein 3 rotating speed of fan is most slow, then fan 3 is the first fan, the rotating speed of remaining 4 fan from slowly to being followed successively by fan soon
2, fan 4, fan 5, fan 1, then when the rotating speed to 5 fans in target fan disk is adjusted, specially：Fan 3
The expectation rotation speed of the fan obtained using in above-mentioned steps 102 is adjusted as desired rotating speed, and fan 2 is currently practical with fan 3
Rotating speed is adjusted rotation as desired rotating speed, and fan 4 is adjusted using the currently practical rotating speed of fan 2 as desired rotating speed to be turned
Dynamic, fan 5 is adjusted rotation using the currently practical rotating speed of fan 4 as desired rotating speed, and fan 1 is currently practical with fan 5
Rotating speed is adjusted rotation as desired rotating speed.
Aforesaid way one and mode two are illustrated how by way of examples to remaining fan in addition to the first fan
Rotating speed be adjusted.No matter being adjusted in which way, all fans in target fan disk may finally be realized with phase
With rotating speed, corner and rotated, i.e. the synchronous rotation of all fans in realization target fan disk.
In addition, when specifically control fan is rotated, different fan adjustable strategies, different fans can be selected to turn
Fast adjustable strategies will lead to different adjustment results.
Wherein, rotation speed of the fan adjustable strategies refer in which way the rotating speed by fan from currently practical adjustment of rotational speed to
It is expected that rotating speed.In present example, when using specific rotation speed of the fan adjustable strategies, several factors can refer to, below
Using time factor as Primary Reference according to detailed to be carried out to the rotation speed of the fan adjustable strategies used in the embodiment of the present invention
Explanation.
The rotating speed in preset time by fan is referred to using time factor as the rotation speed of the fan adjustable strategies of reference frame
From currently practical adjustment of rotational speed to desired rotating speed.
To control the first fan for currently practical rotating speed A is adjusted to it is expected rotation speed of the fan B, specifically can there are many
Rotation speed of the fan adjustable strategies adjust the rotating speed of the first fan, such as：
Rotation speed of the fan adjustable strategies 1：The rotating speed of the first fan is expired from currently practical rotating speed A adjustment in 0-5 minutes
Hope rotation speed of the fan B；
Rotation speed of the fan adjustable strategies 2：The rotating speed of the first fan is adjusted to from currently practical rotating speed A in 5-10 minutes
It is expected that rotation speed of the fan B；
Rotation speed of the fan adjustable strategies 3：By the rotating speed of the first fan from currently practical rotating speed A within the time more than 10 minutes
It is adjusted to it is expected rotation speed of the fan B.
It is certainly, above-mentioned only to illustrate to being illustrated according to the rotation speed of the fan adjustable strategies that time factor is reference frame,
In practical application, specific rotation speed of the fan adjustable strategies are set with being actually needed.
The different adjustment effects that different rotation speed of the fan adjustable strategies will be brought, for example, current fan rotating speed of keeping watch compares
Gao Shi, if rotation speed of the fan adjustable strategies are set as：The rotating speed of fan is completed within a shorter time from currently practical turn
Whole expire of velocity modulation hopes rotation speed of the fan, then may result in the eventually possible infinite approach of fan and it is expected rotation speed of the fan, and reaches forever not
It expires and hopes rotation speed of the fan；And if rotation speed of the fan adjustable strategies are set as：Turning for fan is completed in a longer period of time
Speed expires from currently practical adjustment of rotational speed and hopes rotation speed of the fan, then can finally realize and the adjustment of rotational speed of fan expires fan of keeping watch
Rotating speed, therefore, it can be seen that different rotation speed of the fan adjustable strategies will cause different rotation speed of the fan to adjust result.
In practical application, usually select corresponding rotation speed of the fan adjustable strategies to adjust pid control parameter, i.e., it is different
Rotation speed of the fan adjustable strategies will correspond to different pid control parameters.
Therefore, in embodiments of the present invention, the correspondence between pid control parameter and rotating speed section can be preset,
Specifically, it is first determined the correspondence in rotating speed section and rotation speed of the fan adjustable strategies, then according to rotation speed of the fan adjustable strategies
Corresponding pid control parameter is set.It is specifically described below.
For example, can be in advance low speed (rotation speed of the fan is between rotating speed A~rotating speed B), middling speed (wind by rotating speed interval division
Rotating speed is fanned between rotating speed B~rotating speed C), high speed (rotation speed of the fan is between rotating speed C~rotating speed D), wherein rotating speed A<Rotating speed B<
Rotating speed C<Rotating speed D.
For low rotation speed section, then may be configured as corresponding to the first rotation speed of the fan adjustable strategies；
For middling speed rotating speed section, then corresponding second of rotation speed of the fan adjustable strategies are may be configured as；
For high speed rotating speed section, then may be configured as corresponding to the third rotation speed of the fan adjustable strategies.
Then according to above-mentioned three kinds of rotation speed of the fan adjustable strategies, the specific setting of corresponding pid control parameter is respectively obtained.
To finally obtain the correspondence between pid control parameter and rotating speed section.
It is optional after pre-setting the correspondence between pid control parameter and rotating speed section according to aforesaid way
Ground, can according to following manner come control the first fan from currently practical adjustment of rotational speed expire hope rotation speed of the fan：
Step A, according to the correspondence of preset rotating speed and rotating speed section, corresponding turn of the expectation rotation speed of the fan is determined
Fast section；
Step B, joined with PID controls according to the corresponding rotating speed section of the expectation rotation speed of the fan and preset rotating speed section
Several correspondences determines the corresponding pid control parameter of the expectation rotation speed of the fan；
Step C, according to the expectation rotating speed of first fan and the corresponding pid control parameter of the expectation rotation speed of the fan,
First fan is controlled to be rotated；
Step D, according to the currently practical rotating speed of first fan and the corresponding PID control of the expectation rotation speed of the fan
All fans in target fan disk described in state modulator in addition to first fan are rotated.
Further, in above-mentioned steps 101, the temperature sampler on the fan frame by fan radiating system obtains
After the temperature of target board, however, it is determined that the temperature of the target board is not less than lower electro-temperature threshold value, then notifies management board pair
The Target Board card carries out lower electric treatment.
In this way, can realize when determining that the temperature of target board is greater than or equal to temperature threshold, then notify to manage
Plate carries out lower electric treatment to the Target Board card, to prevent the target board from causing to damage in the condition of high temperature for a long time, because
This, which has, protects the purpose that board is not damaged by high temperature.
The embodiment of the present invention obtains the temperature of target board by the temperature sampler on the fan frame of fan radiating system
Degree, wherein the fan radiating system includes at least one fan disk, and the fan in each fan disk is for realizing to the wind
The corresponding board of fanning tray radiates；According to the correspondence of preset temperature and rotation speed of the fan, the target board is determined
The corresponding expectation rotation speed of the fan of temperature；According to the determining expectation rotation speed of the fan, all fans in control targe fan disk
Rotation is synchronized, the target fan disk is fan disk corresponding with the target board.The embodiment of the present invention is specific as follows
Advantageous effect：First, the decision of cooling system is transferred to fan disk, release management plate part resource, and wind by management board
Fanning tray carries out temperature detection and rotating speed decision just for corresponding board, thus the rotation speed of the fan in different fan disks is entirely
According to the temperature of the corresponding board of fan disk come what is determined, realize given on demand, it is possible to reduce the energy consumption of entire cooling system；
Second, device power-up or reset after, fan disk can be done directly monitoring temperature and itself rotation speed of the fan to respectively corresponding to board
Adjustment improve system without carrying out the adjusting of monitoring temperature and rotation speed of the fan again after waiting for management board initialization
Reliability；Third is implemented synchronous control to the fan in same fan disk and is reached so as to maximum thermal air quantity
Best heat dissipation effect.
Control method for fan provided in an embodiment of the present invention is described in detail below, as shown in Fig. 2, including：
Step 201, the temperature that target board is obtained by the temperature sampler on the fan frame of fan radiating system,
In, the fan radiating system includes at least one fan disk, and the fan in each fan disk is for realizing to the fan disk
Corresponding board radiates；
Step 202, according to the correspondence of preset temperature and rotation speed of the fan, determine that the temperature of the target board corresponds to
Expectation rotation speed of the fan；
Step 203, according to the correspondence of preset rotating speed and rotating speed section, determine that the expectation rotation speed of the fan is corresponding
Rotating speed section, according to pair in the expectation corresponding rotating speed section of rotation speed of the fan and preset rotating speed section and pid control parameter
It should be related to, determine the corresponding pid control parameter of the expectation rotation speed of the fan, wherein；
Step 204, using the expectation rotation speed of the fan as the expectation rotating speed of the first fan, and according to first fan
It is expected that rotating speed and the corresponding pid control parameter of the expectation rotation speed of the fan, control first fan and are rotated, described first
Fan is the fan that rotating speed is most slow in the target fan disk；
Step 205, the currently practical rotating speed for obtaining first fan, the currently practical rotating speed of first fan is made
For the expectation rotating speed of the second fan, second fan is the fan in addition to first fan in the target fan disk；
Step 206 turns according to the expectation of the expectation corresponding pid control parameter of rotation speed of the fan and second fan
Speed controls second fan and is rotated.
The embodiment of the present invention obtains the temperature of target board by the temperature sampler on the fan frame of fan radiating system
Degree, wherein the fan radiating system includes at least one fan disk, and the fan in each fan disk is for realizing to the wind
The corresponding board of fanning tray radiates；According to the correspondence of preset temperature and rotation speed of the fan, the target board is determined
The corresponding expectation rotation speed of the fan of temperature；According to the determining expectation rotation speed of the fan, all fans in control targe fan disk
Rotation is synchronized, the target fan disk is fan disk corresponding with the target board.The embodiment of the present invention is specific as follows
Advantageous effect：First, the decision of cooling system is transferred to fan disk, release management plate part resource, and wind by management board
Fanning tray carries out temperature detection and rotating speed decision just for corresponding board, thus the rotation speed of the fan in different fan disks is entirely
According to the temperature of the corresponding board of fan disk come what is determined, realize given on demand, it is possible to reduce the energy consumption of entire cooling system；
Second, device power-up or reset after, fan disk can be done directly monitoring temperature and itself rotation speed of the fan to respectively corresponding to board
Adjustment improve system without carrying out the adjusting of monitoring temperature and rotation speed of the fan again after waiting for management board initialization
Reliability；Third is implemented synchronous control to the fan in same fan disk and is reached so as to maximum thermal air quantity
Best heat dissipation effect.
With reference to specific embodiment, control method for fan provided in an embodiment of the present invention is specifically described.With reference to
Fig. 3 is cooling system circuit theory schematic diagram provided in an embodiment of the present invention.Wherein, including management board, (N is just to N number of board
Integer), temperature collecting cell, rotating speed scaling unit, fan synchronous control unit and at least one fan disk are (with 1 in figure
For fan frame is comprising 2 fan disks, and include 2 fans in a fan disk).
Modules are briefly described below：
1~N of board：Board is the object that fan is substantially carried out heat dissipation, and multiple temperature sensors are distributed on each board,
Such as temperature sensor LM75, and the places such as air outlet, air intake vent and hottest point for being distributed in each board, for collecting board
Temperature information, and the board temperature information of collection is stored in the register of temperature sensor.
Temperature collecting cell：Temperature sampler on fan board acquires the temperature information of corresponding board by I2C buses, and
Collected temperature information is synchronized to management board for checking and alerting display (including temperature warning etc.)
Rotating speed scaling unit：This route marker is transmitted through the temperature information come to temperature sampler and does certain conversion processing, root
The rotating speed needed for corresponding fan is calculated according to temperature-rotation speed of the fan curve of setting.The conversion of temperature-rotation speed of the fan is according to difference
Environment is different, is not repeated herein.
Fan synchronous control unit：The fan that the unit adds through the stack applies synchronous control, eliminates fan because superposition is drawn
The front and back interference risen increases fan life, reduces noise, increases air quantity, improves experience.
Fan disk：Since air duct is deeper, single fan is not enough to complete heat dissipation large-scale rack-mount unit, usually by 2 or
The multiple fan superpositions of person use (being illustrated for 2 in figure).If the fan of superposition does not do specially treated, at runtime before
Rear fan can interfere with each other, and increase noise, reduce air quantity.
Management board：Management board is the bridge of human-computer interaction, and fan board is by collected board temperature information and rotation speed of the fan
Information passes to management board for showing and alerting；User can also manually set desired rotation speed of the fan by management board.
It is temperature collecting cell structural schematic diagram provided in an embodiment of the present invention with reference to figure 4.That is, Fig. 4 is in Fig. 3
The refinement structure of temperature collecting cell.
Temperature collecting cell carries out regular temperature poll during system operation to respective modules, is between each fan frame
Parallel processing can carry out temperature information acquisition to multiple boards simultaneously.
Manage board monitoring interface logic：The temperature acquisition request of management board is received, and passes to temperature acquisition control logic,
Temperature acquisition control logic is notified to carry out temperature acquisition to each board.If the temperature that temperature collecting cell collects some board is super
The lower electro-temperature threshold value for crossing setting notifies management board to carry out lower electricity to respective modules, prevents module from burning by this logic interfacing.
Temperature acquisition control logic：During system operation, the monitoring temperature request from management board is received, obtains and corresponds to
The temperature information of board passes to management board；The temperature information for periodically obtaining respective modules, completes monitoring temperature, and will get
Temperature information pass to rotating speed scaling unit processing, with calculate heat dissipation needed for expectation rotation speed of the fan.
It is fan synchronous control unit structural schematic diagram provided in an embodiment of the present invention with reference to figure 5.Synchronous control unit is real
When receive fast scaling unit and transmit the expectation rotation speed of the fan of coming, and pass to fan.Simultaneously obtain fan actual speed value and
Abnormality feeds back to management board, for showing and alerting.
Tachometer value receives conversion logic：The expectation rotation speed of the fan that scaling unit transmits is received, and this tachometer value is converted into
PWM (Pulse Width Modulation, pulse width modulation) controlling value of fan, and PWM value is passed into synchronous control
Logic；And receive that synchronous control logical delivery comes when forefan actual revolution signal, and this signal is converted into fan
Rotating speed, shown for managing board monitoring.
Synchronous control logic：The fan in corresponding fan disk is synchronized for realizing according to the PWM value received
Control.
It is synchronous control logical construction schematic diagram provided in an embodiment of the present invention with reference to figure 6.
Fan rotating speed section judging device：Rotation speed of the fan is divided into three low speed, middling speed, high speed sections by this controller.Each area
Between correspond to different pid parameters, reason for this is that under different rotating speeds, same group of PID parameter is difficult to get ideal
Control effect, and Discrete control can solve the problems, such as this well.Three groups of pid parameters pass through in different rotating speeds section
It adjusts to obtain, three adjusted group pid parameter is used as preset parameter, is adjusted due to pid parameter and belongs to general controls algorithm,
Here it seldom explains.The rotation speed of the fan value needed for current heat dissipation is received, corresponding PID is transferred after judging device is distinguished
Parameter.
PID controller：It is that bias adjustment is carried out to entire control system according to PID control principle, to make controlled variable
Actual value it is consistent with desired value.The realization of the pid control algorithm can use MCU (micro-control unit, Micro Control
Unit), cpld (Complex Programmable Logic Device, Complex Programmable Logic Devices) programmings are realized, also may be used
To use logic circuit to build realization.
Rotational speed governor：The module is mainly the analog circuit of a fan control, is accomplished that and is sent according to prime
Rotating speed command control fan supply voltage, to realize the control to rotation speed of the fan, in realization, can use arbitrary adjustable
The power supply circuit of output is realized.
Velocity checking circuits：Rotation speed of the fan can be obtained by detecting element, then using the rotating speed got as closed loop
Controlled quentity controlled variable gradually reduces rotation speed of the fan and it is expected the deviation of rotating speed.
In figure 6, to include 2 fans, respectively fan 1 and fan 2 in target fan disk, and the rotating speed of fan 2 is small
It is illustrated for the rotating speed of fan 1.
Therefore rotation speed of the fan adjusting is carried out to fan 2 according to desired rotation speed of the fan and pid control parameter first, then basis
The currently practical rotating speed and pid control parameter of fan 2 carry out rotation speed of the fan adjusting to fan 1, final to realize fan 1 and fan
2 synchronous rotation, and rotating speed is identical as desired rotation speed of the fan or infinite approach.
With reference to figure 7, method flow schematic diagram is rotated synchronously for fan provided in an embodiment of the present invention, wherein with target wind
Fanning tray includes 2 fans, and fan 2 is that rotation speed of the fan is less than for the rotation speed of the fan of fan 1.Include the following steps：
Step 701 obtains and it is expected rotation speed of the fan；
Step 702 judges whether the expectation rotation speed of the fan corresponds to low speed section, if so, step 705 is gone to, if
It is no, then go to step 703；
Step 703 judges whether the expectation rotation speed of the fan corresponds to middling speed section, if so, step 706 is gone to, if
It is no, then go to step 704；
Step 704 judges whether the expectation rotation speed of the fan corresponds to high speed section, if so, step 707 is gone to, if
It is no, then go to step 701；
Step 705, extraction low speed pid control parameter；
Step 706, extraction middling speed pid control parameter；
Step 707, extraction high speed pid control parameter；
Step 708, the actual speed for obtaining fan 2；
Step 709 judges whether fan 2 has exception, if so, step 720 is gone to, if it is not, then going to step 710；
In the step, judge whether a fan is abnormal, such as can be by judging the currently practical rotating speed of the fan
It is no in a preset section, if then think that the fan is normal, such as by rotation speed of the fan be more than tachometer value 1, and less than turn
The fan of fast value 2 is determined as normal fan, if thus the rotating speed of a fan has been more than rotating speed 2 or less than tachometer value 1, recognize
For fan exception, step 720 is gone at this time and is handled.
Difference between step 710, the actual speed for calculating fan 2 and expectation rotation speed of the fan；
Deviation is inputted PID controller by step 711, calculates 2 spin rate control quantity of fan；
Step 712, according to 2 spin rate control quantity of fan, accelerate fan 2 or reduce the rotating speed of fan 2；
Step 713, using the currently practical rotating speed of the fan 2 got as the expectation rotating speed of fan 1；
Step 714, the actual speed for obtaining fan 2；
Step 715 judges whether fan 2 is abnormal, if so, step 719 is gone to, if it is not, then going to step 716；
The deviation of step 716, the actual speed for calculating fan 1 and fan 1 it is expected between rotating speed；
Deviation is inputted PID controller by step 717, calculates 1 spin rate control quantity of fan；
Step 718 accelerates 1 rotating speed of fan or reduces 1 rotating speed of fan；
Step 719 closes fan 1, lights warning light, notices exception in management board, while desired rotation speed of the fan being multiplied by
Setting is more than the i.e. given with maximum value of maximum value to fan 2 after desired value；
In this case, since fan 1 is abnormal, fan 1 is closed, thus only fan 2 is working at present, in order to protect
Card can provide enough air quantity, it is therefore desirable to improve the rotating speed of fan 2, increase air quantity supply, therefore will it is expected rotation speed of the fan
Be multiplied by desired value (be usually some value more than 1, such as 1.2), if the value be less than fan 2 maximum (top) speed, should
It is worth the expectation rotating speed as fan 2, if the value is more than the maximum (top) speed of fan 2, using the maximum (top) speed of fan 2 as fan
2 expectation rotating speed.
Step 720 closes fan 2, lights warning light, notices exception in management board, while desired rotation speed of the fan being multiplied by
Setting is more than the i.e. given with maximum value of maximum value to fan 1 after desired value；
In this case, since fan 2 is abnormal, fan 2 is closed, thus only fan 1 is working at present, in order to protect
Card can provide enough air quantity, it is therefore desirable to improve the rotating speed of fan 1, increase air quantity supply, therefore will it is expected rotation speed of the fan
Be multiplied by desired value (be usually some value more than 1, such as 1.2), if the value be less than fan 1 maximum (top) speed, should
It is worth the expectation rotating speed as fan 1, if the value is more than the maximum (top) speed of fan 2, using the maximum (top) speed of fan 1 as fan
1 expectation rotating speed.
Step 721, the actual speed for obtaining fan 1；
Step 722 judges whether fan 1 is abnormal, if then going to step 726, if otherwise going to step 723；
The deviation of step 723, the actual speed for calculating fan 1 and fan 1 it is expected between rotating speed；
Deviation is inputted PID controller by step 724, calculates 1 spin rate control quantity of fan；
Step 725 accelerates 1 rotating speed of fan or reduces 1 rotating speed of fan；
Step 726 closes fan 1, lights warning light, and abnormal, prompt replacement fan is noticed in management board.
In situation, fan 1 and fan 2 are all abnormal, it is therefore desirable to user be prompted to replace fan.
In practical applications, since general air intake vent wind speed is smaller, air outlet wind speed is larger, therefore 2 conduct of general fan
Air intake vent fan, fan 1 are used as air outlet fan, i.e., the adjustment of rotating speed are carried out to air intake vent fan first, then to air outlet
Fan carries out the adjustment of rotating speed.
The embodiment of the present invention obtains the temperature of target board by the temperature sampler on the fan frame of fan radiating system
Degree, wherein the fan radiating system includes at least one fan disk, and the fan in each fan disk is for realizing to the wind
The corresponding board of fanning tray radiates；According to the correspondence of preset temperature and rotation speed of the fan, the target board is determined
The corresponding expectation rotation speed of the fan of temperature；According to the determining expectation rotation speed of the fan, all fans in control targe fan disk
Rotation is synchronized, the target fan disk is fan disk corresponding with the target board.The embodiment of the present invention is specific as follows
Advantageous effect：First, the decision of cooling system is transferred to fan disk, release management plate part resource, and wind by management board
Fanning tray carries out temperature detection and rotating speed decision just for corresponding board, thus the rotation speed of the fan in different fan disks is entirely
According to the temperature of the corresponding board of fan disk come what is determined, realize given on demand, it is possible to reduce the energy consumption of entire cooling system；
Second, device power-up or reset after, fan disk can be done directly monitoring temperature and itself rotation speed of the fan to respectively corresponding to board
Adjustment improve system without carrying out the adjusting of monitoring temperature and rotation speed of the fan again after waiting for management board initialization
Reliability；Third is implemented synchronous control to the fan in same fan disk and is reached so as to maximum thermal air quantity
Best heat dissipation effect.
Based on the same technical idea, the embodiment of the present invention also provides fan control device, as shown in figure 8, including：
Collecting unit 801, for obtaining target board by the temperature sampler on the fan frame of fan radiating system
Temperature, wherein the fan radiating system includes at least one fan disk, and the fan in each fan disk is for realizing to described
The corresponding board of fan disk radiates；
Determination unit 802 determines the target board for the correspondence according to preset temperature and rotation speed of the fan
The corresponding expectation rotation speed of the fan of temperature；
Control unit 803, for according to the determining expectation rotation speed of the fan, all fans in control targe fan disk
Rotation is synchronized, the target fan disk is fan disk corresponding with the target board.
Optionally, described control unit 801 are specifically used for：
Using the expectation rotation speed of the fan as the expectation rotating speed of the first fan, and turned according to the expectation of first fan
Speed controls first fan and is rotated, and first fan is the fan that rotating speed is most slow in the target fan disk；
The currently practical rotating speed of first fan is obtained, and institute is controlled according to the currently practical rotating speed of first fan
All fans in target fan disk in addition to first fan are stated to be rotated.
Optionally, described control unit 801 are additionally operable to：
Using the currently practical rotating speed of first fan as the expectation rotating speed of the second fan, second fan is described
Fan in target fan disk in addition to first fan；
According to the expectation rotating speed of second fan, controls second fan and rotated.
Optionally, described device further includes control parameter determination unit 804, is specifically used for：
According to the correspondence of preset rotating speed and rotating speed section, the corresponding rotating speed area of the expectation rotation speed of the fan is determined
Between；
It is corresponding with pid control parameter according to the corresponding rotating speed section of the expectation rotation speed of the fan and preset rotating speed section
Relationship determines the corresponding pid control parameter of the expectation rotation speed of the fan, wherein different pid control parameters corresponds to different
Rotation speed of the fan adjustable strategies；
Described control unit 801, is specifically used for：
According to the expectation rotating speed of first fan and the corresponding pid control parameter of the expectation rotation speed of the fan, institute is controlled
The first fan is stated to be rotated；
According to the currently practical rotating speed of first fan and the corresponding pid control parameter control of the expectation rotation speed of the fan
All fans in the target fan disk in addition to first fan are rotated.
Optionally, described device further includes Alarm Unit 805, is specifically used for：
If it is determined that the temperature of the target board is not less than lower electro-temperature threshold value, then notify management board to the target board
Carry out lower electric treatment.
The embodiment of the present invention obtains the temperature of target board by the temperature sampler on the fan frame of fan radiating system
Degree, wherein the fan radiating system includes at least one fan disk, and the fan in each fan disk is for realizing to the wind
The corresponding board of fanning tray radiates；According to the correspondence of preset temperature and rotation speed of the fan, the target board is determined
The corresponding expectation rotation speed of the fan of temperature；According to the determining expectation rotation speed of the fan, all fans in control targe fan disk
Rotation is synchronized, the target fan disk is fan disk corresponding with the target board.The embodiment of the present invention is specific as follows
Advantageous effect：First, the decision of cooling system is transferred to fan disk, release management plate part resource, and wind by management board
Fanning tray carries out temperature detection and rotating speed decision just for corresponding board, thus the rotation speed of the fan in different fan disks is entirely
According to the temperature of the corresponding board of fan disk come what is determined, realize given on demand, it is possible to reduce the energy consumption of entire cooling system；
Second, device power-up or reset after, fan disk can be done directly monitoring temperature and itself rotation speed of the fan to respectively corresponding to board
Adjustment improve system without carrying out the adjusting of monitoring temperature and rotation speed of the fan again after waiting for management board initialization
Reliability；Third is implemented synchronous control to the fan in same fan disk and is reached so as to maximum thermal air quantity
Best heat dissipation effect.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions each in flowchart and/or the block diagram
The combination of flow and/or box in flow and/or box and flowchart and/or the block diagram.These computers can be provided
Processor of the program instruction to all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices
To generate a machine so that the instruction executed by computer or the processor of other programmable data processing devices generates use
In the dress for realizing the function of being specified in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes
It sets.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications can be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (8)
1. a kind of control method for fan, which is characterized in that including：
The temperature of target board is obtained by the temperature sampler on the fan frame of fan radiating system, wherein the fan dissipates
Hot systems include at least one fan disk, and the fan in each fan disk carries out for realizing to the corresponding board of the fan disk
Heat dissipation；
According to the correspondence of preset temperature and rotation speed of the fan, determine that the corresponding expectation fan of the temperature of the target board turns
Speed；
According to the determining expectation rotation speed of the fan, all fans in control targe fan disk synchronize rotation, the mesh
Mark fan disk is fan disk corresponding with the target board；It is described according to the determining expectation rotation speed of the fan, control targe
All fans in fan disk synchronize rotation, including：
Using the expectation rotation speed of the fan as the expectation rotating speed of the first fan, and according to the expectation rotating speed of first fan, control
It makes first fan to be rotated, first fan is the fan that rotating speed is most slow in the target fan disk；
The currently practical rotating speed of first fan is obtained, and the mesh is controlled according to the currently practical rotating speed of first fan
All fans in mark fan disk in addition to first fan are rotated.
2. control method for fan as described in claim 1, which is characterized in that described according to the currently practical of first fan
All fans that rotating speed controls in the target fan disk in addition to first fan are rotated, including：
Using the currently practical rotating speed of first fan as the expectation rotating speed of the second fan, second fan is the target
Fan in fan disk in addition to first fan；
According to the expectation rotating speed of second fan, controls second fan and rotated.
3. control method for fan as claimed in claim 1 or 2, which is characterized in that it is described using the expectation rotation speed of the fan as
Before the expectation rotating speed of first fan, further include：
According to the correspondence of preset rotating speed and rotating speed section, the corresponding rotating speed section of the expectation rotation speed of the fan is determined；
Joined with proportional integral differential PID control according to the corresponding rotating speed section of the expectation rotation speed of the fan and preset rotating speed section
Several correspondences determines the corresponding pid control parameter of the expectation rotation speed of the fan；
The expectation rotating speed according to first fan controls first fan and is rotated, including：
According to the expectation rotating speed of first fan and the corresponding pid control parameter of the expectation rotation speed of the fan, control described the
One fan is rotated；
It is described to be controlled in the target fan disk in addition to first fan according to the currently practical rotating speed of first fan
All fans rotated, including：
According to the currently practical rotating speed of first fan and the corresponding pid control parameter control of the expectation rotation speed of the fan
All fans in target fan disk in addition to first fan are rotated.
4. control method for fan as described in claim 1, which is characterized in that on the fan frame by fan radiating system
Temperature sampler obtain target board temperature after, further include：
If it is determined that the temperature of the target board is not less than lower electro-temperature threshold value, then management board is notified to carry out the Target Board card
Lower electric treatment.
5. a kind of fan control device, which is characterized in that including：
Collecting unit, the temperature for obtaining target board by the temperature sampler on the fan frame of fan radiating system,
In, the fan radiating system includes at least one fan disk, and the fan in each fan disk is for realizing to the fan disk
Corresponding board radiates；
Determination unit determines the temperature pair of the target board for the correspondence according to preset temperature and rotation speed of the fan
The expectation rotation speed of the fan answered；
Control unit, for according to the determining expectation rotation speed of the fan, all fans in control targe fan disk to carry out same
Step rotation, the target fan disk are fan disk corresponding with the target board；Described control unit is specifically used for：
Using the expectation rotation speed of the fan as the expectation rotating speed of the first fan, and according to the expectation rotating speed of first fan, control
It makes first fan to be rotated, first fan is the fan that rotating speed is most slow in the target fan disk；
The currently practical rotating speed of first fan is obtained, and the mesh is controlled according to the currently practical rotating speed of first fan
All fans in mark fan disk in addition to first fan are rotated.
6. fan control device as claimed in claim 5, which is characterized in that described control unit is additionally operable to：
Using the currently practical rotating speed of first fan as the expectation rotating speed of the second fan, second fan is the target
Fan in fan disk in addition to first fan；
According to the expectation rotating speed of second fan, controls second fan and rotated.
7. such as fan control device described in claim 5 or 6, which is characterized in that described device further includes that control parameter determines
Unit is specifically used for：
According to the correspondence of preset rotating speed and rotating speed section, the corresponding rotating speed section of the expectation rotation speed of the fan is determined；
Joined with proportional integral differential PID control according to the corresponding rotating speed section of the expectation rotation speed of the fan and preset rotating speed section
Several correspondences determines the corresponding pid control parameter of the expectation rotation speed of the fan；
Described control unit is specifically used for：
According to the expectation rotating speed of first fan and the corresponding pid control parameter of the expectation rotation speed of the fan, control described the
One fan is rotated；
According to the currently practical rotating speed of first fan and the corresponding pid control parameter control of the expectation rotation speed of the fan
All fans in target fan disk in addition to first fan are rotated.
8. fan control device as claimed in claim 5, which is characterized in that described device further includes Alarm Unit, specific to use
In：
If it is determined that the temperature of the target board is not less than lower electro-temperature threshold value, then management board is notified to carry out the Target Board card
Lower electric treatment.
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