CN106292954A - Fan rotational frequency control method and device - Google Patents
Fan rotational frequency control method and device Download PDFInfo
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- CN106292954A CN106292954A CN201610646946.4A CN201610646946A CN106292954A CN 106292954 A CN106292954 A CN 106292954A CN 201610646946 A CN201610646946 A CN 201610646946A CN 106292954 A CN106292954 A CN 106292954A
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- rotating speed
- temperature value
- described fan
- speed
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
Abstract
The present invention provides a kind of fan rotational frequency control method and device, including the end temperature value of the end time point in the initial temperature value of the start time point first obtained in the first predetermined time period and the first predetermined time period；And then obtain initial temperature value and the difference of end temperature value, determine the rotating speed of fan finally according to end temperature value and difference, so that fan is according to the rotation speed operation of fan.Wherein, the rotating speed of fan is determined according to end temperature value and two dimensions of difference, thus when the temperature determining computer rises too fast, the rotating speed of fan can be improved, now, even if computer runs the software needing mass data computing and process, owing to the rotating speed of fan is improved, causing the rotating speed according to the fan determined is the speed that the speed that computer carries out lowering the temperature increases close or larger than computer-internal temperature, thus reaching the purpose quickly lowered the temperature for computer so that the temperature of computer-internal has obtained effective control and reduction.
Description
Technical field
The present invention relates to heat dissipation technology, particularly relate to a kind of fan rotational frequency control method and device.
Background technology
Along with the fast development of computer technology, the operating frequency of each chip in computer is also improving constantly, when
When each chip in computer runs with higher frequency, the highest temperature will certainly be produced, now need to be located at computer
Interior radiator fan dispels the heat, so that calculate the long steady operation of function.
In computer, conventional radiator fan is DC fan at present, and its principle is mainly: CPU acquires computer-internal
Temperature information after, determine the rotating speed of fan, the wind that then will determine according to the temperature being pre-configured with and rotation speed of the fan information table
The output of pulse signal corresponding to rotating speed of fan is to DC fan, to control DC fan according to the rotation speed operation determined.
By the way of above-mentioned, although the cooling for computer-internal can be met, but for needs mass data computing
With the software processed, the speed that computer-internal temperature rises quickly, thus can cause the speed that computer-internal temperature increases
Being far longer than the rotation speed of the fan determined according to the temperature being pre-configured with and rotation speed of the fan information table is the speed that computer carries out lowering the temperature
Degree, and then the temperature of computer-internal still cannot be effectively reduced.
Summary of the invention
The embodiment of the present invention provides a kind of fan rotational frequency control method and device, to overcome prior art Computer to run
The problem needing cannot effectively reduce the temperature of computer-internal during the software of mass data computing and process.
First aspect present invention provides a kind of fan rotational frequency control method, and described method is applied to pulse width modulation (PWM)
Fan, described method includes:
Obtain the initial temperature value of start time point in the first predetermined time period；
Obtain the end temperature value of end time point in described first predetermined time period；
Determine described initial temperature value and the difference of described end temperature value；
The rotating speed of fan is determined, so that described fan is according to described fan according to described end temperature value and described difference
Rotation speed operation.
Second aspect present invention provides a kind of fan rotation speed control apparatus, and described device is applied to pulse width modulation (PWM)
In fan, described device includes:
Acquisition module, the initial temperature value of the start time point in obtaining the first predetermined time period；
Described acquisition module, is additionally operable to obtain the end temperature of the end time point in described first predetermined time period
Value；
Determine module, for determining described initial temperature value and the difference of described end temperature value；
Described determine module, be additionally operable to determine according to described end temperature value and described difference the rotating speed of fan, so that institute
State the fan rotation speed operation according to described fan.
In the embodiment of the present invention, including: first obtain the initial temperature of start time point in the first predetermined time period
The end temperature value of the end time point in value and the first predetermined time period；And then obtain initial temperature value and end temperature value
Difference, determine the rotating speed of fan finally according to end temperature value and difference, so that fan is according to the rotation speed operation of fan.Its
In, the rotating speed of fan is determined according to end temperature value and two dimensions of difference, thus when the temperature determining computer rises
Time too fast, the rotating speed of fan can be improved, now, even if computer runs needs the soft of mass data computing and process
During part, owing to being improved by the rotating speed of fan, causing the rotating speed according to the fan determined is the speed that computer carries out lowering the temperature
The speed increased close or larger than computer-internal temperature, thus reach the purpose quickly lowered the temperature for computer so that computer
Internal temperature has obtained effective control and reduction, further improves Consumer's Experience.The embodiment of the present invention provides one
Fan rotational frequency control method and device, need the software of mass data computing and process to overcome prior art Computer to run
The problem that Shi Wufa effectively reduces the temperature of computer-internal.
First aspect present invention provides a kind of fan rotational frequency control method, and described method is applied to pulse width modulation (PWM)
Fan, described method includes:
Obtain the initial temperature value of start time point in the first predetermined time period；
Obtain the end temperature value of end time point in described first predetermined time period；
Determine described initial temperature value and the difference of described end temperature value；
The rotating speed of fan is determined, so that described fan is according to described fan according to described end temperature value and described difference
Rotation speed operation.
Second aspect present invention provides a kind of fan rotation speed control apparatus, and described device is applied to pulse width modulation (PWM)
In fan, described device includes:
Acquisition module, the initial temperature value of the start time point in obtaining the first predetermined time period；
Described acquisition module, is additionally operable to obtain the end temperature of the end time point in described first predetermined time period
Value；
Determine module, for determining described initial temperature value and the difference of described end temperature value；
Described determine module, be additionally operable to determine according to described end temperature value and described difference the rotating speed of fan, so that institute
State the fan rotation speed operation according to described fan.
In the embodiment of the present invention, including: first obtain the initial temperature of start time point in the first predetermined time period
The end temperature value of the end time point in value and the first predetermined time period；And then obtain initial temperature value and end temperature value
Difference, determine the rotating speed of fan finally according to end temperature value and difference, so that fan is according to the rotation speed operation of fan.Its
In, the rotating speed of fan is determined according to end temperature value and two dimensions of difference, thus when the temperature determining computer rises
Time too fast, the rotating speed of fan can be improved, now, even if computer runs needs the soft of mass data computing and process
During part, owing to being improved by the rotating speed of fan, causing the rotating speed according to the fan determined is the speed that computer carries out lowering the temperature
The speed increased close or larger than computer-internal temperature, thus reach the purpose quickly lowered the temperature for computer so that computer
Internal temperature has obtained effective control and reduction, further improves Consumer's Experience.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is this
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 show the flow chart one of the fan rotational frequency control method that the embodiment of the present invention provides；
Fig. 2 show the flowchart of the S104 in Fig. 1 that the embodiment of the present invention provides；
Fig. 3 show the flowchart 2 of the fan rotational frequency control method that the embodiment of the present invention provides；
Fig. 4 show the structural representation of the fan rotation speed control apparatus that the embodiment of the present invention provides.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is described.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Term " first " in the description of the present invention, claims and above-mentioned accompanying drawing, " second ", etc. be for distinguishing
Similar object, without being used for describing specific order or precedence.Should be appreciated that the data of so use are in suitable feelings
Can exchange under condition, in order to embodiments of the invention described herein can be with in addition to those here illustrating or describing
Order implement.Additionally, term " includes " and " having " and their any deformation, it is intended that cover bag not exclusively
Contain, such as, contain the process of series of steps, method, comprising a series of unit, the system of module, product or equipment need not
Be limited to those steps or the unit clearly listed, but can include the most clearly listing or for these processes, method,
Product or intrinsic other step of equipment or unit." at least one " involved in the present invention refers to one, or multiple
The meaning.
Carrying out lowering the temperature for each chip of computer-internal is an emphasis of computer realm research, because in computer
The temperature in portion raises, and can make the hydraulic performance decline of computer, particularly with the image software needing mass data computing and process
And video software, temperature rises the fastest, and impact is further obvious, the Consumer's Experience that cause the user is bad.
The present invention determines the rotating speed of fan by combining the changing value of temperature value and temperature, such that it is able to meet is quickly
The purpose of computer-internal cooling, so that need mass data computing and the image software of process and the video software can also
Properly functioning, it is effectively improved Consumer's Experience.
It should be noted that the computer in the embodiment of the present invention is only a kind of application scenarios of the present invention, in reality
In application, the method that the present invention provides can also be applied to other needs and carry out in the equipment lowered the temperature, such as: television set.
Fig. 1 show the flow chart one of the fan rotational frequency control method that the embodiment of the present invention provides, as it is shown in figure 1, this reality
The method executing example may include that
S101: obtain the initial temperature value of start time point in the first predetermined time period.
S102: obtain the end temperature value of end time point in the first predetermined time period.
One in the present invention can be in implementation, and above-mentioned S101 can begin to when computer just starts running hold
OK, then continuously acquire.
Such as: the time span preset is 1s, when computer just starts running, (computer operated 0s) obtains initial
Temperature value, as the initial temperature value of the first round, then obtains the end temperature value of the first round again when computer has operated 1s,
Initial temperature value according to the first round now obtained and the end temperature value execution S103-S104 of the first round, meanwhile, will
Computer operated 1s time the end temperature value that gets as the second initial temperature value taken turns, then, when computer operates
The second end temperature value taken turns is obtained again, the end temperature taken turns according to the second initial temperature value taken turns and second now obtained during 2s
Angle value performs S103-S104, by that analogy.
In the attainable mode of another kind of the present invention, above-mentioned S101 can also be after computer operates a period of time
Start to perform, just continuously perform after performing or be still spaced execution.
Such as: preset time span be similarly 1s, when computer runs to 60s obtain initial temperature value, then when
Obtain end temperature value when computer runs to 61s again, perform according to the initial temperature value now obtained and end temperature value
S103-S104；The most meanwhile, computer has been operated 61s time initial as next round of the end temperature value that gets
Temperature value, then, obtains the end temperature value of next round again when computer has operated 62s, and second according to now obtaining is taken turns
The end temperature value taken turns of initial temperature value and second perform S103-S104, by that analogy；Or, run to 80s at computer
Shi Jixu obtains initial temperature value, then obtains end temperature value again when computer runs to 81s, according to rising of now obtaining
Beginning temperature value and end temperature value perform S103-S104.
S103: determine initial temperature value and the difference of end temperature value.
Owing to the present invention determining, the condition of rotation speed of the fan is not only temperature value, the also difference of temperature, therefore, when
S101 and S102 obtains initial temperature value and first predetermined time period of start time point in the first predetermined time period
In end time point end temperature value after, there is also a need for obtaining the difference of the two temperature value.
S104: determine the rotating speed of fan according to end temperature value and difference, so that fan is according to the rotation speed operation of fan.
In the embodiment of the present invention, including: first obtain the initial temperature of start time point in the first predetermined time period
The end temperature value of the end time point in value and the first predetermined time period；And then obtain initial temperature value and end temperature value
Difference, determine the rotating speed of fan finally according to end temperature value and difference, so that fan is according to the rotation speed operation of fan.Its
In, the rotating speed of fan is determined according to end temperature value and two dimensions of difference, thus when the temperature determining computer rises
Time too fast, the rotating speed of fan can be improved, now, even if computer runs needs the soft of mass data computing and process
During part, owing to being improved by the rotating speed of fan, causing the rotating speed according to the fan determined is the speed that computer carries out lowering the temperature
The speed increased close or larger than computer-internal temperature, thus reach the purpose quickly lowered the temperature for computer so that computer
Internal temperature has obtained effective control and reduction, further improves Consumer's Experience.
Fig. 2 show the flowchart of the S104 in Fig. 1 that the embodiment of the present invention provides, concrete, basis in S104
End temperature value and difference determine that the rotating speed of fan comprises the following steps:
S1041: determine the first rotating speed of fan according to end temperature value and rotation speed of the fan table, preserves temperature in rotation speed of the fan table
Angle value and the mapping relations of rotation speed of the fan；
S1042: judge that whether difference is more than preset temperature value；
If difference is more than or equal to preset temperature value, then perform S1043, if difference is less than preset temperature value, then perform
S1044；
S1043: the first rotating speed of fan is changed to the second rotating speed of fan, using the second rotating speed of fan as fan
Rotating speed, so that fan is according to the second rotation speed operation of fan, wherein, the second rotating speed of fan is more than the first rotating speed of fan；
S1044: using the first rotating speed of fan as the rotating speed of fan, so that fan is according to the first rotation speed operation of fan.
Wherein, the one in the present invention can be in implementation, and rotation speed of the fan table is as shown in table 1,
Table 1
| Temperature | The rotating speed of fan |
| 15℃ | One-level rotating speed |
| 15.1℃ | One-level rotating speed |
| 15.2℃ | Second-Stage Rotating Speed |
| 15.3℃ | Second-Stage Rotating Speed |
| … | … |
As shown in table 1, with the rotating speed of the corresponding fan of each temperature value, thus can work as and obtained end temperature value
After, the first rotating speed of fan corresponding to end temperature value just can be obtained according to above-mentioned table 1, so that it is determined that the first of fan turn
Speed, and make fan operate under this first rotating speed.
Such as: if the end temperature value got is 15.2 DEG C, then determine that the first rotating speed of fan is two grades according to table 1
Rotating speed, so that fan operates under Second-Stage Rotating Speed.
Another kind in the present invention can be in implementation, and rotation speed of the fan table is as shown in table 2,
Table 2
| Temperature | The rotating speed of fan |
| 1℃-3℃ | One-level rotating speed |
| 3℃-6℃ | Second-Stage Rotating Speed |
| 6℃-9℃ | Three grades of rotating speeds |
| 9℃-12℃ | Level Four rotating speed |
| … |
As shown in table 2, temperature value can be divided into multiple temperature range, turning of the corresponding different fan of each temperature range
Speed, thus after having obtained end temperature value, according to above-mentioned table 2 first-selection determine end temperature value in which temperature range, so
Rear continuation just can obtain the first rotating speed of fan corresponding to the temperature range at temperature value place, end according to table 2, so that it is determined that
First rotating speed of fan, and make fan operate under this rotating speed.
Such as: if the end temperature value got is 4.5 DEG C, then determine the temperature at this temperature value place, end according to table 2
Degree interval is 3 DEG C-6 DEG C, continues to determine that the first rotating speed that temperature range is 3 DEG C-6 DEG C corresponding fans is two grades and turns according to table 2
Speed, so that fan operates under Second-Stage Rotating Speed.
When after the first rotating speed having obtained fan corresponding to end temperature value, although fan can operate, if but user
When using computer to carry out the program that some such as image procossing etc. need mass data computing, if cooling rate crosses slow meeting
Cause the poor performance of computer, thus reduce Consumer's Experience.
Therefore, now, also need whether the difference judging initial temperature value and end temperature value is more than preset temperature value, if
The difference of initial temperature value and end temperature value is more than preset temperature value, then illustrate that computer is performing some operation strengths relatively
Big program, needs fast cooling, now can determine that the first rotating speed of the fan obtained promotes by above-mentioned according to end temperature value
To the second rotating speed of fan, so that fan is lowered the temperature for computer faster；If initial temperature value and end temperature
The difference of value is not more than preset temperature value, then illustrate that computer is not carried out the program that some operation strengths are bigger, it is not required that
Fast cooling, now controlling fan operates under above-mentioned the first rotating speed determining the fan obtained according to end temperature value.
Wherein, the second rotating speed of fan can ratio the first high one-level of rotating speed of fan, it is also possible to high N level, the present invention is the most right
Concrete setting is any limitation as, as long as having carried out promoting by the rotating speed of fan, wherein N is the positive integer more than or equal to 2.
When the difference of initial temperature value and end temperature value is more than or equal to preset temperature value, but first turn of now fan
When speed has been the maximum (top) speed of fan, it it is the first rotating speed without adjusting fan.
Wherein, if S1043 difference is more than or equal to preset temperature value, the first rotating speed of fan is changed to the second of fan
Rotating speed, comprises the following steps the second rotating speed of fan as the rotating speed of fan:
If difference more than or equal to preset temperature value, then judges that whether the first rotating speed of fan is the maximum (top) speed of fan；
If the first rotating speed of fan is the maximum (top) speed of fan, then using the first rotating speed of fan as the rotating speed of fan；
If the first rotating speed of fan is not the maximum (top) speed of fan, then the first rotating speed of fan is changed to the second of fan
Rotating speed, and using the second rotating speed of fan as the rotating speed of fan.
The most above-mentioned step can also be without carrying out, but after determining the first rotating speed of fan in above-mentioned S1041,
Judge that whether the first rotating speed of the fan now determined is the maximum (top) speed of fan, if it is then directly allow fan exist immediately
Now operate under the first rotating speed, and be performed without step S1042 and later step, thus effectively save judgement time
Between.
Performing during above-mentioned S101 and S102, also knowing that execution following steps:
In the present invention, initial temperature value and first Preset Time of the start time point in obtaining very first time length are long
During the end temperature value of the end time point in degree, it is also possible to obtain the current point in time in the first predetermined time period
Temperature value, then, according to temperature value and the rotation speed of the fan table of current point in time, determine the rotating speed of fan current point in time, with
Make fan at current point in time according to the rotation speed operation of fan current point in time, namely during each in the first preset time period
Between put and all can obtain temperature value, the then rotating speed of subduing the wind syndrome fan the most really such that it is able to allow fan preferably for computer heat radiation.
After having obtained the rotating speed of current point in time of fan, this rotating speed can be carried out backup and preserve, then, it is determined that wind
After the rotating speed of fan current point in time, also include:
Obtain the temperature value of the future time point of current point in time in the first predetermined time period；
Temperature value according to future time point and rotation speed of the fan table, determine the rotating speed of fan future time point；
Judge that the rotating speed of fan future time point is the most identical with the rotating speed of fan current point in time,
If the rotating speed of fan future time point is identical with the rotating speed of fan current point in time, the most do not change the rotating speed of fan,
So that fan continues the rotation speed operation according to fan current point in time；
If the rotating speed of fan future time point is different with the rotating speed of fan current point in time, then the rotating speed of fan is changed to
The rotating speed of fan future time point, so that fan is according to the rotation speed operation of fan future time point.
Owing to being backed up by the rotating speed of fan current point in time, thus current point in time has configured the parameter of fan
After, now, fan operates under the rotating speed of fan current point in time, after the rotating speed getting fan future time point, first
Compare, if identical, then without going to configure the parameter of fan, effectively save the time of configuration, improve the heat radiation of fan
Performance.
It should be noted that the first Preset Time △ t in the present invention can be the acquisition temperature that in computer, itself is arranged
The circulation time t of angle valueBOn the basis of, carry out circulation time counting n, thus obtain the first Preset Time △ t=n × tB。
And preset temperature value △ DMAXObtain according to the performance test of computer, for different temperature ranges, enter respectively
The performance test of the trip temperature rate of climb, by the performance indications determined by Consumer's Experience, obtains what each silicon carbide rose
Speed △ DBlock, by comparing, choose the △ D of minimumBlockThe standard △ D judged as system entiretyMAX。
The simply one citing of the method for above-mentioned acquisition the first Preset Time and preset temperature value, in actual applications, also may be used
Obtaining with the method having other, this is not any limitation as by the present invention.
Fig. 3 show the flowchart 2 of the fan rotational frequency control method that the embodiment of the present invention provides, as it is shown on figure 3, this reality
Execute in example, the circulation time t of computerB=500ms, the first Preset Time △ t=1s, preset temperature value △ DMAX=0.5 DEG C,
And the present embodiment carries out technology by enumerator, due to △ t=20 × tB, therefore when enumerator is 20, then it represents that arrive
First Preset Time.
Idiographic flow is:
Obtain initial temperature value；
Judge that whether the value of nonce counter is as 1；
If the value of nonce counter is 1, then carry out the backup of temperature value, when being 20 for the value in later stage Yu enumerator
Temperature value seek difference, and determine the rotating speed of fan according to rotation speed of the fan table, so judge the rotating speed of fan whether with on fan
The rotating speed of secondary setting is identical, if identical, then makes fan continue the rotation speed operation that holding is present, if it is not the same, then control wind
The rotation speed operation of the fan fan to determine；
If the value of nonce counter is not 1, then judge whether the value of nonce counter is 20；
If the value of nonce counter is 20, then by clear for the value of enumerator 0, then determine fan according to rotation speed of the fan table
First rotating speed, and the difference of the temperature value of backup when the temperature value of acquisition is 1 with the value of enumerator when the value of computing counter is 20
Value △ d, and judge whether temperature variation △ d is more than or equal to 0.5 DEG C, if △ d is more than or equal to 0.5 DEG C, the most further
Judge that whether the first rotating speed of fan is the maximum (top) speed of fan, if it is, keep the first rotating speed of fan constant, if not
It is then the first rotating speed of fan to be increased one-level；
And then judge that the rotating speed of fan is the most identical with the rotating speed of fan setting last time, if identical, then make fan continue
Keep present rotation speed operation, if it is not the same, then control the rotation speed operation of the fan fan to determine.
Wherein, it is judged that the fan in the step that the rotating speed of fan is the most identical with the rotating speed of fan setting last time set last time
The acquisition of rotating speed, can back up while last time sets the rotating speed of fan.
Fig. 4 show the structural representation of the fan rotation speed control apparatus that the embodiment of the present invention provides, as shown in Figure 4, originally
The device of embodiment is applied in pulse width modulation (PWM) fan, and described device includes:
Acquisition module 11, the initial temperature value of the start time point in obtaining the first predetermined time period；
Described acquisition module 11, is additionally operable to obtain the end temperature of the end time point in described first predetermined time period
Value；
Determine module 12, for determining described initial temperature value and the difference of described end temperature value；
Described determine module 12, be additionally operable to determine according to described end temperature value and described difference the rotating speed of fan, so that
Described fan is according to the rotation speed operation of described fan.
Optionally, at the aspect of the described rotating speed determining fan according to described end temperature value and described difference, described really
Cover half block 12 is used for:
The first rotating speed of described fan is determined, in described rotation speed of the fan table according to described end temperature value and rotation speed of the fan table
Storage temperature value and the mapping relations of rotation speed of the fan；
Judge that whether described difference is more than preset temperature value；
If described difference is more than or equal to described preset temperature value, the first rotating speed of described fan is changed to described fan
The second rotating speed, using the second rotating speed of described fan as the rotating speed of described fan, so that described fan is according to described fan
Second rotation speed operation, the second rotating speed of described fan is more than the first rotating speed of described fan；
If described difference is less than described preset temperature value, using the first rotating speed of described fan as the rotating speed of described fan,
So that described fan is according to the first rotation speed operation of described fan.
Optionally, if in described difference more than or equal to described preset temperature value, by the first rotating speed change of described fan
For the second rotating speed of described fan, using the second rotating speed of described fan as the aspect of the rotating speed of described fan, described determine mould
Block 12 is used for:
If described difference is more than or equal to described preset temperature value, then judge whether the first rotating speed of described fan is described
The maximum (top) speed of fan；
If the first rotating speed of described fan is the maximum (top) speed of described fan, then using the first rotating speed of described fan as institute
State the rotating speed of fan；
If the first rotating speed of described fan is not the maximum (top) speed of described fan, then by the first rotating speed change of described fan
For the second rotating speed of described fan, and using the second rotating speed of described fan as the rotating speed of described fan.
Optionally, described acquisition module 11, the current point in time being additionally operable to obtain in described first predetermined time period
Temperature value；
Described determine module 12, be additionally operable to the temperature value according to described current point in time and described rotation speed of the fan table, determine
The rotating speed of described fan current point in time so that described fan at current point in time according to the rotating speed of described fan current point in time
Operating.
Optionally, after the described rotating speed determining described fan current point in time, also include:
Described acquisition module 11, be additionally operable to described determine module 12 determine described fan current point in time rotating speed it
After, obtain the temperature value of the future time point of described current point in time in described first predetermined time period；
Described determine module 12, for the temperature value according to described future time point and described rotation speed of the fan table, determine institute
State the rotating speed of fan future time point；
Described determine module 12, be additionally operable to judge when the rotating speed of described fan future time point is the most current with described fan
Between point rotating speed identical,
When the rotating speed of described fan future time point is identical with the rotating speed of described fan current point in time, the most described determine
Module 12 does not change the rotating speed of described fan, so that described fan continues the rotation speed operation according to described fan current point in time；
When the rotating speed of described fan future time point is different with the rotating speed of described fan current point in time, the most described determine
The rotating speed of described fan is changed to the rotating speed of described fan future time point by module 12, so that described fan is according to described fan
The rotation speed operation of future time point.
The device of the present embodiment, may be used for performing the technical scheme of embodiment of the method shown in Fig. 1, and it realizes principle and skill
Art effect is similar to, and here is omitted.
In several embodiments provided by the present invention, it should be understood that disclosed apparatus and method, can be passed through it
Its mode realizes.Such as, device embodiment described above is only schematically, such as, and the division of described unit, only
Being only a kind of logic function to divide, actual can have other dividing mode, the most multiple unit or assembly to tie when realizing
Close or be desirably integrated into another system, or some features can be ignored, or not performing.Another point, shown or discussed
Coupling each other or direct-coupling or communication connection can be the INDIRECT COUPLING by some interfaces, device or unit or logical
Letter connects, and can be electrical, machinery or other form.
The described unit illustrated as separating component can be or may not be physically separate, shows as unit
The parts shown can be or may not be physical location, i.e. may be located at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected according to the actual needs to realize the mesh of the present embodiment scheme
's.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to two or more unit are integrated in a unit.Above-mentioned integrated list
Unit both can realize to use the form of hardware, it would however also be possible to employ hardware adds the form of SFU software functional unit and realizes.
The above-mentioned integrated unit realized with the form of SFU software functional unit, can be stored in an embodied on computer readable and deposit
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions with so that a computer
Equipment (can be personal computer, server, or the network equipment etc.) or processor (processor) perform the present invention each
The part steps of method described in embodiment.And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (Read-
Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disc or CD etc. various
The medium of program code can be stored.
Those skilled in the art are it can be understood that arrive, for convenience and simplicity of description, only with above-mentioned each functional module
Division be illustrated, in actual application, can be as desired by complete by different functional modules for above-mentioned functions distribution
Become, the internal structure of device will be divided into different functional modules, to complete all or part of function described above.On
State the specific works process of the device of description, be referred to the corresponding process in preceding method embodiment, do not repeat them here.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；To the greatest extent
The present invention has been described in detail by pipe with reference to foregoing embodiments, it will be understood by those within the art that: it depends on
So the technical scheme described in foregoing embodiments can be modified, or the most some or all of technical characteristic is entered
Row equivalent；And these amendments or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a fan rotational frequency control method, it is characterised in that described method is applied to pulse width modulation (PWM) fan, described
Method includes:
Obtain the initial temperature value of start time point in the first predetermined time period；
Obtain the end temperature value of end time point in described first predetermined time period；
Determine described initial temperature value and the difference of described end temperature value；
The rotating speed of fan is determined, so that described fan is according to the rotating speed of described fan according to described end temperature value and described difference
Operating.
Method the most according to claim 1, it is characterised in that described determine according to described end temperature value and described difference
The rotating speed of fan includes:
Determine the first rotating speed of described fan according to described end temperature value and rotation speed of the fan table, described rotation speed of the fan table preserves
Temperature value and the mapping relations of rotation speed of the fan；
Judge that whether described difference is more than preset temperature value；
If the first rotating speed of described fan more than or equal to described preset temperature value, is changed to the of described fan by described difference
Two rotating speeds, using the second rotating speed of described fan as the rotating speed of described fan, so that described fan is according to the second of described fan
Rotation speed operation, the second rotating speed of described fan is more than the first rotating speed of described fan；
If described difference is less than described preset temperature value, using the first rotating speed of described fan as the rotating speed of described fan, so that
Described fan is according to the first rotation speed operation of described fan.
Method the most according to claim 2, it is characterised in that if described difference is more than or equal to described preset temperature value,
First rotating speed of described fan is changed to the second rotating speed of described fan, using the second rotating speed of described fan as described fan
Rotating speed include:
If described difference is more than or equal to described preset temperature value, then judge whether the first rotating speed of described fan is described fan
Maximum (top) speed；
If the first rotating speed of described fan is the maximum (top) speed of described fan, then using the first rotating speed of described fan as described wind
The rotating speed of fan；
If the first rotating speed of described fan is not the maximum (top) speed of described fan, then the first rotating speed of described fan is changed to institute
State the second rotating speed of fan, and using the second rotating speed of described fan as the rotating speed of described fan.
Method the most according to claim 3, it is characterised in that described method also includes:
Obtain the temperature value of current point in time in described first predetermined time period；
Temperature value according to described current point in time and described rotation speed of the fan table, determine the rotating speed of described fan current point in time,
So that described fan at current point in time according to the rotation speed operation of described fan current point in time.
Method the most according to claim 4, it is characterised in that the described rotating speed determining described fan current point in time it
After, also include:
Obtain the temperature value of the future time point of described current point in time in described first predetermined time period；
Temperature value according to described future time point and described rotation speed of the fan table, determine the rotating speed of described fan future time point；
Judge that the rotating speed of described fan future time point is the most identical with the rotating speed of described fan current point in time,
If the rotating speed of described fan future time point is identical with the rotating speed of described fan current point in time, the most do not change described fan
Rotating speed so that described fan continues according to the rotation speed operation of described fan current point in time；
If the rotating speed of described fan future time point is different with the rotating speed of described fan current point in time, then turning described fan
Speed changes to the rotating speed of described fan future time point, so that described fan is transported according to the rotating speed of described fan future time point
Turn.
6. a fan rotation speed control apparatus, it is characterised in that described device is applied in pulse width modulation (PWM) fan, institute
State device to include:
Acquisition module, the initial temperature value of the start time point in obtaining the first predetermined time period；
Described acquisition module, is additionally operable to obtain the end temperature value of the end time point in described first predetermined time period；
Determine module, for determining described initial temperature value and the difference of described end temperature value；
Described determine module, be additionally operable to determine according to described end temperature value and described difference the rotating speed of fan, so that described wind
Fan the rotation speed operation according to described fan.
Device the most according to claim 6, it is characterised in that described true according to described end temperature value and described difference
The aspect of rotating speed of subduing the wind syndrome fan, described determine module for:
Determine the first rotating speed of described fan according to described end temperature value and rotation speed of the fan table, described rotation speed of the fan table preserves
Temperature value and the mapping relations of rotation speed of the fan；
Judge that whether described difference is more than preset temperature value；
If the first rotating speed of described fan more than or equal to described preset temperature value, is changed to the of described fan by described difference
Two rotating speeds, using the second rotating speed of described fan as the rotating speed of described fan, so that described fan is according to the second of described fan
Rotation speed operation, the second rotating speed of described fan is more than the first rotating speed of described fan；
If described difference is less than described preset temperature value, using the first rotating speed of described fan as the rotating speed of described fan, so that
Described fan is according to the first rotation speed operation of described fan.
Device the most according to claim 7, it is characterised in that if in described difference more than or equal to described preset temperature
Value, is changed to the second rotating speed of described fan, using the second rotating speed of described fan as described by the first rotating speed of described fan
The aspect of the rotating speed of fan, described determine module for:
If described difference is more than or equal to described preset temperature value, then judge whether the first rotating speed of described fan is described fan
Maximum (top) speed；
If the first rotating speed of described fan is the maximum (top) speed of described fan, then using the first rotating speed of described fan as described wind
The rotating speed of fan；
If the first rotating speed of described fan is not the maximum (top) speed of described fan, then the first rotating speed of described fan is changed to institute
State the second rotating speed of fan, and using the second rotating speed of described fan as the rotating speed of described fan.
Device the most according to claim 8, it is characterised in that
Described acquisition module, is additionally operable to obtain the temperature value of the current point in time in described first predetermined time period；
Described determine module, be additionally operable to the temperature value according to described current point in time and described rotation speed of the fan table, determine described wind
The rotating speed of fan current point in time so that described fan at current point in time according to the rotation speed operation of described fan current point in time.
Device the most according to claim 9, it is characterised in that the described rotating speed determining described fan current point in time it
After, also include:
Described acquisition module, be additionally operable to described determine the rotating speed that module determines described fan current point in time after, obtain institute
State the temperature value of the future time point of described current point in time in the first predetermined time period；
Described determine module, for the temperature value according to described future time point and described rotation speed of the fan table, determine described fan
The rotating speed of future time point；
Described determine module, be additionally operable to judge the rotating speed of described fan future time point whether with described fan current point in time
Rotating speed is identical,
When the rotating speed of described fan future time point is identical with the rotating speed of described fan current point in time, the most described determine module
Do not change the rotating speed of described fan, so that described fan continues the rotation speed operation according to described fan current point in time；
When the rotating speed of described fan future time point is different with the rotating speed of described fan current point in time, the most described determine module
The rotating speed of described fan is changed to the rotating speed of described fan future time point, so that described fan is according to a period of time under described fan
Between point rotation speed operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610646946.4A CN106292954A (en) | 2016-08-08 | 2016-08-08 | Fan rotational frequency control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610646946.4A CN106292954A (en) | 2016-08-08 | 2016-08-08 | Fan rotational frequency control method and device |
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| CN106292954A true CN106292954A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610646946.4A Pending CN106292954A (en) | 2016-08-08 | 2016-08-08 | Fan rotational frequency control method and device |
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| Country | Link |
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| CN (1) | CN106292954A (en) |
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| CN114326852A (en) * | 2021-11-23 | 2022-04-12 | 中建二局第一建筑工程有限公司 | Constant temperature control method, device, controller and storage medium |
| CN114923270A (en) * | 2022-06-16 | 2022-08-19 | 四川长虹空调有限公司 | Heating control method and device for air conditioner |
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