CN108181974A - A kind of server fan soft start control method and system - Google Patents
A kind of server fan soft start control method and system Download PDFInfo
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- CN108181974A CN108181974A CN201810069906.7A CN201810069906A CN108181974A CN 108181974 A CN108181974 A CN 108181974A CN 201810069906 A CN201810069906 A CN 201810069906A CN 108181974 A CN108181974 A CN 108181974A
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4411—Configuring for operating with peripheral devices; Loading of device drivers
- G06F9/4413—Plug-and-play [PnP]
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Abstract
The embodiment of the invention discloses a kind of server fan soft start control method and system, method includes server booting, obtain fan in bit quantity；According to the quantity of fan in place, judge whether that timesharing is needed to start；If so, timesharing soft start is carried out to fan；If it is not, soft start directly then is carried out to fan.The present invention is in server start process, when number of fans is more, timesharing startup is carried out to fan, avoid the problem that starting multiple fans simultaneously causes starting current excessive, ensure the stability of system in start-up course, simultaneously for the startup of single fan, using soft starting mode, the starting current during starting fan is effectively reduced, avoids the flow problem excessively during starting fan.
Description
Technical field
The present invention relates to server fan technical field, specifically a kind of server fan soft start control method and
System.
Background technology
With the continuous improvement of server performance, the power consumption of server apparatus increases therewith.Come therewith, server
The calorific value of equipment is increasing, therefore the quantity of radiator fan is also being continuously increased in server.It is well known that fan is opening
During dynamic, starting current value can not only cause overcurrent in supply line considerably beyond load current value, excessive current value
Equipment is protected to generate overcurrent protection action, can also cause supply line's voltage fluctuation, influence server apparatus startup stability.
For needing the fan of hot plug, due in swapping process the problems such as loose contact that may be present, starting fan
Fan connector is also resulted in the process the serious problems such as burns, in traditional design, often by the way of hardware delay circuit,
So that fan is delayed after such insertion, certain time provides power supply again, is asked although can be burnt to a certain extent to avoid connector
Topic, but can not solve the problems, such as that starting current is excessive.
Invention content
A kind of server fan soft start control method and system are provided in the embodiment of the present invention, to solve the prior art
The problem of middle server fan starting current is excessive.
In order to solve the above-mentioned technical problem, the embodiment of the invention discloses following technical solutions：
First aspect present invention provides a kind of server fan soft start control method, includes the following steps：
Server be switched on, obtain fan in bit quantity；
According to the quantity of fan in place, judge whether that timesharing is needed to start；
If so, timesharing soft start is carried out to fan；
If it is not, soft start directly then is carried out to fan.
With reference to first aspect, in first aspect in the first possible realization method, the step further includes：In server
In operational process, fan insertion has been detected whether, and time-delay soft start is carried out to the fan of insertion.
With reference to first aspect, in second of possible realization method of first aspect, the fan of described pair of insertion prolongs
When soft start detailed process be：
Setting delay stand-by period T1, the fan of insertion is waited for into line delay；
The signal in place of insertion fan is persistently judged in stand-by period T1；
After signal stabilization in place, soft start is carried out to fan.
With reference to first aspect, in first aspect the first or second of possible realization method, the timesharing startup is：
Fan is started one by one.
With reference to first aspect, in first aspect the first or second of possible realization method, the timesharing startup is：
Fan is grouped, is one group per a number of fan, is started by group.
With reference to first aspect, in first aspect in the third possible realization method, the soft start is：It is controlled using PWM
System starts voltage, and startup voltage is made to increase stage by stage, until starting voltage reaches rated voltage, terminates start-up course.
With reference to first aspect, it is described to start electricity using PWM controls in first aspect in the third possible realization method
Pressure, makes startup voltage increase stage by stage, until starting voltage reaches rated voltage, the detailed process for terminating start-up course is：
The relationship of PWM duty cycle and rated voltage is set, and sets PWM duty cycle increment and delay stand-by period T2；
Started for the first startup stage, applying first for fan starts voltage；
It is delayed and waits for according to T2, PWM duty cycle increases, and opens next startup stage；
Judge whether PWM duty cycle reaches predetermined duty ratio, if it is not, previous step is repeated, if so, terminating to start.
Second aspect of the present invention provides a kind of server fan soft-start control system, the system comprises：
Data acquisition module, for obtaining the signal in place of fan, and calculate fan in bit quantity；
Judgment module according to the quantity of fan in place, judges whether that timesharing is needed to start；
Timesharing starting module, for carrying out timesharing soft start control to fan；
Soft-start module, for carrying out soft start control to fan.
With reference to second aspect, in second aspect in the first possible realization method, the system also includes delayed startups
Module, in server operational process, the data acquisition module has detected whether fan insertion, when there is fan insertion, institute
It states delayed startup module and time-delay soft start is carried out to the fan of insertion.
With reference to second aspect, in second aspect in the first possible realization method, the soft-start module includes：
Rule settings unit, for setting the relationship of PWM duty cycle and rated voltage, and set PWM duty cycle increment and
Be delayed stand-by period T2；
Start unit for starting for the first startup stage, applies first for fan and starts voltage；
Delay waits for unit, is waited for for being delayed according to T2, and PWM duty cycle increases, and opens next startup stage；
Loop control unit, for judging whether PWM duty cycle reaches predetermined duty ratio, if it is not, returning to demonstration waits for list
The operation of member, if so, terminating to start.
The server fan soft-start control system of second aspect of the present invention can realize first aspect and first
Method in each realization method of aspect, and obtain identical effect.
The effect provided in invention content is only the effect of embodiment rather than invents all whole effects, above-mentioned
A technical solution in technical solution has the following advantages that or advantageous effect：
1st, in server start process, when number of fans is more, timesharing startup is carried out to fan, avoids starting simultaneously
The problem of multiple fans cause starting current excessive ensures the stability of system in start-up course, simultaneously for single fan
Start, using soft starting mode, effectively reduce the starting current during starting fan, avoid the overcurrent during starting fan
Problem.
2nd, in server operational process, monitored whether that fan is extracted or is inserted into real time, if there is fan insertion, to inserting
Enter fan and carry out delayed startup, the signal in place of fan is constantly monitored during delay, after signal stabilization in place, to fan
Soft start is carried out, ensures the stable operation of system, if there is fan extraction, cuts off fan power supply in time, avoid the waste of the energy
Ensure system safety simultaneously, prevent the problem of connector is burnt in fan hot plug process, and without increasing peripheral delay circuit,
Design cost is reduced, improves the reliability of system.
3rd, the embodiment of the present invention both can also realize the control to hot-plug fan to the control of non-hot-plug fan
System, it is highly practical.
4th, it in soft start-up process, is controlled using PWM duty cycle and starts voltage, by increasing PWM duty cycle, make startup voltage
Reach rated voltage, complete the start-up course of fan, control method is simple.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without creative efforts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the flow chart of the method for the present invention one embodiment；
Fig. 2 is the flow chart of another embodiment of the method for the present invention；
Fig. 3 is the flow chart of soft start-up process of the present invention；
Fig. 4 is the structure diagram of present system one embodiment；
Fig. 5 is the structure diagram of another embodiment of present system.
Specific embodiment
In order to clarify the technical characteristics of the invention, below by specific embodiment, and its attached drawing is combined, to this hair
It is bright to be described in detail.Following disclosure provides many different embodiments or example is used for realizing the different knots of the present invention
Structure.In order to simplify disclosure of the invention, hereinafter the component of specific examples and setting are described.In addition, the present invention can be with
Repeat reference numerals and/or letter in different examples.This repetition is that for purposes of simplicity and clarity, itself is not indicated
Relationship between various embodiments and/or setting is discussed.It should be noted that illustrated component is not necessarily to scale in the accompanying drawings
It draws.Present invention omits the descriptions to known assemblies and treatment technology and process to avoid the present invention is unnecessarily limiting.
As shown in Figure 1, server fan soft start control process of the present invention includes the following steps：
S1, server booting, obtain fan in bit quantity；
S2 according to the quantity of fan in place, judges whether that timesharing is needed to start；
S3, if so, carrying out timesharing soft start to fan；
S4, if it is not, then directly carrying out soft start to fan.
In step S2, the quantity of fan in place can sets itself, after more than setting quantity, timesharing startup is carried out to fan
Control；In step S3, timesharing soft start refers to that the startup to fan in place carries out the control of timesharing startup first, for each wind
Fan is in start-up course by the way of soft start control.The mode that timesharing starts control can be that fan is opened one by one
It is dynamic, starting current excessive situation when starting simultaneously to avoid multiple fans；When number of fans is more, start effect to improve
Rate, timesharing start control mode and are not limited to fan and start one by one, can also wind two-by-two under the premise of the permission of starting current maximum value
/ tri- three fans of fan start simultaneously.
As shown in Fig. 2, on the basis of above-described embodiment, the present embodiment not only to booting when fan in place start
Control, also controls the fan inserted or pull out in server operational process.Specifically, in server operational process
In, constantly perform the operation that step S5 judges whether there is fan insertion and step S9 judges whether there is fan extraction.
When there is fan insertion, carry out step S6 delays and wait for, the time T1 sets itself for the waiting that is delayed, S7 judges
Whether position signal is stablized, if unstable, return to step S6 repeats to wait for, until the signal stabilization in place of fan, performs step
S8 carries out soft start to fan.
When there is fan extraction, step S10 is performed, stops sending voltage control signal to extracting the slot at fan, prevent
Only connector is burned out.
As shown in figure 3, soft start control process is：
S41, sets the relationship of PWM duty cycle and rated voltage, and sets PWM duty cycle increment and delay stand-by period
T2；
S42 started for the first startup stage, and applying first for fan starts voltage；
S43 is delayed according to T2 and waits for, and PWM duty cycle increases, and opens next startup stage；
S44, judges whether PWM duty cycle reaches predetermined duty ratio；
S45, if it is not, previous step is repeated, if so, terminating to start.
By taking rated voltage 12V as an example, the control of fan uses PWM (Pulse Width Modulation, pulse width tune
System) it controls, in step S1, it is 0 to set PWM duty cycle and control voltage as 0 correspondence, and duty ratio is that 100% correspondence control voltage is
12V, the increment of PWM duty cycle is 20%.
To ensure system safety, specified turn idling, i.e. soft start since desired speed of the fan in hot plug is generally
Predetermined voltage in the process is rated voltage (PWM duty cycle 100%), and in step S2, fan starts the first of soft start
In the stage, PWM duty cycle 0, fan both end voltage difference is 0 at this time, and fan is in halted state.
In step S3, after being waited for according to T2 delays, PWM duty cycle increases by 20%, and fan both end voltage difference is about 12* at this time
20%=2.4V, be delayed T2, and into the second startup stage, PWM duty cycle is 40% at this time, and fan both end voltage difference is 4.8V,
Continue to be delayed and into next startup stage, so repeatedly, until fan duty ratio reaches 100%, fan both end voltage difference reaches
To rated voltage (12V), start-up course terminates.
As shown in figure 4, server fan soft-start control system of the present invention include data acquisition module 1, judgment module 2,
Timesharing starting module 3 and soft-start module 4.Data acquisition module 1 is used to obtain the signal in place of fan, and calculate fan
Bit quantity, judgment module 2 judge whether that timesharing is needed to start, timesharing starting module 3 is used for wind according to the quantity of fan in place
Fan carries out timesharing soft start control, and soft-start module 4 is used to carry out soft start control to fan.
Soft start control module 4 further includes rule settings unit 41, start unit 42, delay waiting unit 43 and cycle control
Unit 44 processed.Rule settings unit 41 is used to set the relationship of PWM duty cycle and rated voltage, and sets PWM duty cycle increment
With delay stand-by period T2；Start unit 42 applies first for starting for the first startup stage, for fan and starts voltage；Delay etc.
Treat that unit 43 waits for for being delayed according to T2, PWM duty cycle increases, and opens next startup stage；Loop control unit 44 is used for
Judge whether PWM duty cycle reaches predetermined duty ratio, if it is not, the operation that demonstration waits for unit is returned to, if so, terminating to start.
As shown in figure 5, system further includes delayed startup module 5, in server operational process, data acquisition module 1 is examined
Whether survey has fan insertion, and when there is fan insertion, delayed startup module 5 simultaneously carries out time-delay soft start to the fan of insertion.
The above is the preferred embodiment of the present invention, for those skilled in the art,
Without departing from the principles of the invention, several improvements and modifications can also be made, these improvements and modifications are also regarded as this hair
Bright protection domain.
Claims (10)
1. a kind of server fan soft start control method, it is characterized in that, include the following steps：
Server be switched on, obtain fan in bit quantity；
According to the quantity of fan in place, judge whether that timesharing is needed to start；
If so, timesharing soft start is carried out to fan；
If it is not, soft start directly then is carried out to fan.
2. a kind of server fan soft start control method according to claim 1, it is characterized in that, the step is also wrapped
It includes：In server operational process, fan insertion has been detected whether, and time-delay soft start is carried out to the fan of insertion.
3. a kind of server fan soft start control method according to claim 2, it is characterized in that, the wind of described pair of insertion
Fan carry out time-delay soft start detailed process be：
Setting delay stand-by period T1, the fan of insertion is waited for into line delay；
The signal in place of insertion fan is persistently judged in stand-by period T1；
After signal stabilization in place, soft start is carried out to fan.
4. a kind of server fan soft start control method according to claim 1 or 2, it is characterized in that, the timesharing is opened
It moves and is：Fan is started one by one.
5. a kind of server fan soft start control method according to claim 1 or 2, it is characterized in that, the timesharing is opened
It moves and is：Fan is grouped, is one group per a number of fan, is started by group.
6. a kind of server fan soft start control method according to claim 1, it is characterized in that, the soft start is：
It is controlled using PWM and starts voltage, startup voltage is made to increase stage by stage, until starting voltage reaches rated voltage, end started
Journey.
7. a kind of server fan soft start control method according to claim 6, it is characterized in that：It is described to be controlled using PWM
System starts voltage, and startup voltage is made to increase stage by stage, until starting voltage reaches rated voltage, terminates the specific mistake of start-up course
Cheng Wei：
The relationship of PWM duty cycle and rated voltage is set, and sets PWM duty cycle increment and delay stand-by period T2；
Started for the first startup stage, applying first for fan starts voltage；
It is delayed and waits for according to T2, PWM duty cycle increases, and opens next startup stage；
Judge whether PWM duty cycle reaches predetermined duty ratio, if it is not, previous step is repeated, if so, terminating to start.
8. a kind of server fan soft-start control system, it is characterized in that, the system comprises：
Data acquisition module, for obtaining the signal in place of fan, and calculate fan in bit quantity；
Judgment module according to the quantity of fan in place, judges whether that timesharing is needed to start；
Timesharing starting module, for carrying out timesharing soft start control to fan；
Soft-start module, for carrying out soft start control to fan.
9. a kind of server fan soft-start control system according to claim 8, it is characterized in that, the system also includes
Delayed startup module, in server operational process, the data acquisition module has detected whether fan insertion, is inserted when there is fan
Fashionable, the delayed startup module simultaneously carries out time-delay soft start to the fan of insertion.
10. according to a kind of server fan soft-start control system of 8 or 9 any one of them of claim, it is characterized in that, it is described
Soft-start module includes：
Rule settings unit for setting the relationship of PWM duty cycle and rated voltage, and sets PWM duty cycle increment and delay
Stand-by period T2；
Start unit for starting for the first startup stage, applies first for fan and starts voltage；
Delay waits for unit, is waited for for being delayed according to T2, and PWM duty cycle increases, and opens next startup stage；
Loop control unit, for judging whether PWM duty cycle reaches predetermined duty ratio, if it is not, returning to demonstration waits for unit
Operation, if so, terminating to start.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810069906.7A CN108181974A (en) | 2018-01-24 | 2018-01-24 | A kind of server fan soft start control method and system |
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| CN201810069906.7A CN108181974A (en) | 2018-01-24 | 2018-01-24 | A kind of server fan soft start control method and system |
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Cited By (5)
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| CN109185210A (en) * | 2018-10-26 | 2019-01-11 | 盛科网络（苏州）有限公司 | A kind of hot-plug fan module is delayed the method and device powered on afterwards in place |
| CN109441792A (en) * | 2019-01-10 | 2019-03-08 | 北京汇能精电科技股份有限公司 | Fan slow switch circuit and system |
| CN112556113A (en) * | 2020-11-30 | 2021-03-26 | 珠海格力电器股份有限公司 | Multi-module unit and control method and device thereof, storage medium and processor |
| CN113778206A (en) * | 2021-07-30 | 2021-12-10 | 中国电子科技集团公司第二十九研究所 | Method and device for preventing environmental control equipment in electronic system from freezing |
| CN115494894A (en) * | 2022-07-20 | 2022-12-20 | 烯旺新材料科技股份有限公司 | Temperature control method of electric heating assembly |
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