CN110230605A - Multi-fan adjusts the control method of revolving speed according to temperature - Google Patents
Multi-fan adjusts the control method of revolving speed according to temperature Download PDFInfo
- Publication number
- CN110230605A CN110230605A CN201810179395.4A CN201810179395A CN110230605A CN 110230605 A CN110230605 A CN 110230605A CN 201810179395 A CN201810179395 A CN 201810179395A CN 110230605 A CN110230605 A CN 110230605A
- Authority
- CN
- China
- Prior art keywords
- fan
- revolving speed
- speed
- control method
- duty cycle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000001174 ascending effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
- F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
-
- 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
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The present invention provides a kind of multi-fan according to the control method of temperature adjustment revolving speed, including a micro controller circuit board and one or several fans, circuit board connection one or several fans, the fan controls rotation speed of the fan with PWM duty cycle, and tach signal is returned into micro controller (MCU), it controls ratio with consistency to reach temperature change and revolving speed and regulates and controls, cabinet is allowed to have optimal radiating efficiency.
Description
Technical field
The present invention relates to a kind of multi-fans according to the control method of temperature adjustment revolving speed, it is espespecially a kind of to control one or
Multiple rotation speed of the fan systems and implementation method.
Background technique
Current server or computer system uses the temperature for avoiding overheat mostly in a manner of configuring fan to radiate
Server or computer system are damaged.The prior art is become with the signal corresponding temperature of pulse width modulation (abbreviation PWM)
Change, uses the duty ratio of adjustment fan PWM to reach increase revolving speed, radiated with improving air quantity, but each fan has it
Characteristic, as shown in Figure 1, connection one or several fans 200 on the micro controller circuit board 100 of general commercially available fan, the fan 200 with
PWM duty cycle controls revolving speed, and tach signal is back to micro controller 300, however and not all fan and its revolving speed be all in
Linear relationship influences the performance of rotation speed of the fan because windage is different from wind pressure when ornaments have various assemblies especially in cabinet,
When often the duty ratio of PWM increases 10%, but the actual revolving speed of fan only has 5% promotion, and when different fans forms
When fan wall in cabinet, situation is increasingly complex, thus the radiating efficiency of fan entirety is made to be unable to reach desired effect, therefore has
To further seek feasible solution.
In view of this, studying intensively and test improvement repeatedly, a kind of multi-fan is now invented according to the control of temperature adjustment revolving speed
Method processed can remove existing product disadvantage, to promote effect.
Summary of the invention
The main purpose of the present invention is to provide a kind of multi-fans according to the control method of temperature adjustment revolving speed, mainly in opening
Machine activation system, by the signal that micro controller (MCU) output PWM duty cycle is ascending or descending, to a period of time revolving speed
The rotation speed of the fan is read when becoming steady, establishes the relation table of PWM duty cycle Yu revolving speed (RPM), it can be according to the temperature into operational mode
Degree obtains how many revolving speed need to be provided, and then revolving speed needs how many PWM duty cycle, corresponds to the characteristic of itself according to each fan to correspond to temperature
Degree variation, enabling radiating efficiency is the best.
In order to achieve the above object, the present invention uses following technological means:
A kind of multi-fan adjusts the control method of revolving speed according to temperature, comprising:
(1) starting up's system, when micro controller (MCU) Yu Kaiji, export PWM duty cycle to fan, after waiting for a period of time
When revolving speed becomes steady, then read the rotation speed of the fan；
(2) judgement checks whether there is revolution counter, if setting initial duty ratio without revolution counter, turns to reach to increase
Speed is radiated with improving the air quantity of fan；
(3) if there is revolution counter, the operational mode of (6) is entered step；
(4) after setting duty ratio, output pwm signal to all fans；
(5) after waiting for a period of time, check whether the PWM duty cycle of fan is maximum (top) speed, if maximum (top) speed
Revolution counter is then established, if not maximum (top) speed then increases duty ratio, is returned abovementioned steps (4)；And
(6) after fan is maximum (top) speed and establishes revolution counter, into operational mode.
The present invention provides multi-fan according to the control method of temperature adjustment revolving speed, including a micro controller (MCU) circuit board and one
Or multiple fans, when which is switched on, after output is to the ascending or descending duty ratio of each fan, to a period of time
When obtaining revolving speed operation, the rotary speed data is used according to housing temperature, to reach the speed regulating method of each fan equal proportion.
Detailed description of the invention
Fig. 1: being the fan control system schematic diagram of the prior art.
Fig. 2: being the method flow diagram of present invention control rotation speed of the fan.
Fig. 3: being the source map of revolution counter of the present invention.
Fig. 4: being the corresponding diagram of temperature of the present invention and rotation speed of the fan.
Appended drawing reference
100 circuit boards
200 fans
300 micro controllers
301 Nonvolatile Random Access memories
Specific embodiment
As shown in Figure 1, being connection one or several fans 200, the wind on micro controller circuit board 100 designed by the present invention
Fan 200 controls the revolving speed of fan with PWM duty cycle, and tach signal is returned in micro controller 300, to establish the stream of revolution counter
Journey.
As shown in Fig. 2, for the method flow diagram of present invention control rotation speed of the fan；The method of the control rotation speed of the fan.Firstly,
Step 400: starting up's system, when micro controller (MCU) Yu Kaiji, export the PWM ascending or descending to each fan
After duty ratio, such as 30%, 40%, 50% ... is slowly incremented by with 10% interval, revolving speed after waiting for a period of time after being often incremented by
When becoming steady, then the rotation speed of the fan is read, then carries out step 401 after system starting.
Step 401: judgement checks whether there is revolution counter, if there is revolution counter, step 408 is carried out, into operational mode；It is no
Then, then step 402 is carried out.
Step 402: setting initial PWM duty cycle, radiate to reach increase revolving speed to improve air quantity, then walked
Rapid 403.
Step 403: output pwm signal to all fans then carries out step 404.
Step 404: wait for a period of time N, then carries out step 405.
Step 405: checking whether the PWM duty cycle of fan corresponds to maximum (top) speed, if so, carrying out step 406；It is no
Then, then step 407 is carried out.
Step 406: the relation table of PWM duty cycle Yu revolving speed (RPM) is established, as shown in figure 3, then carrying out step 408.
Step 408: when PWM duty cycle reaches 100% (maximum (top) speed), stopping record, control operation mould into temperature
Formula.
Above-mentioned PWM duty cycle and revolution counter can establish the corresponding diagram of temperature trend and revolution counter as shown in Figure 4, run mould
Formula can need to provide how many revolving speed according to the temperature, and revolving speed needs how many PWM duty cycle；Such each fan all corresponds to the fan
The characteristic of oneself carrys out the variation of corresponding temperature, to provide optimal radiating efficiency.
Step 407: when the non-maximum (top) speed of the revolving speed of fan, duty ratio can be increased, then, return to abovementioned steps 403.
According to identifying recording layer, it is also possible to come the case where checking fan fails, when a wherein fan PWM duty cycle without
When method reaches revolving speed requirement, for example maximum (top) speed can only achieve 75%, that is, can produce fan fails signal notice system.Above-mentioned turn
Fast table data also can record in Nonvolatile Random Access memory (NVRAM) 301 or storage media, and be stored in micro controller circuit
In plate 100 (such as Fig. 1), when booting next time, it is convenient to omit fall and build list procedure, and be directly entered in the operational mode of step 408.
Because some type fans also can drive revolving speed with voltage change, if therefore fan revolving speed driven with voltage change, make
The parameter of above-mentioned duty ratio can be replaced it with voltage such as PWM duty cycle by method.
In conclusion control method of the multi-fan of the present invention according to temperature adjustment revolving speed, is including a micro controller (MCU) circuit
Plate and one or more fans, when which is switched on, after output is to the ascending or descending duty ratio of each fan, to one
When the section time obtains revolving speed operation, the rotary speed data is used according to housing temperature, to reach the speed regulating method of each fan equal proportion.
Therefore foregoing invention indeed has significant creativeness, and for utilizing in industry.
Claims (5)
1. a kind of multi-fan is according to the control method of temperature adjustment revolving speed characterized by comprising
(1) starting up's system, micro controller export PWM duty cycle to fan when booting, become after waiting for a period of time in revolving speed
When steady, then read the rotation speed of the fan；
(2) judgement check whether there is revolution counter, if setting initial duty ratio without revolution counter, come reach increase revolving speed with
The air quantity of fan is improved to radiate；
(3) if there is revolution counter, the operational mode of (6) is entered step；
(4) after setting duty ratio, output pwm signal to all fans；
(5) after waiting for a period of time, check whether the PWM duty cycle of fan corresponds to maximum (top) speed, if maximum (top) speed is then built
Vertical revolution counter returns abovementioned steps (4) if not maximum (top) speed then increases duty ratio；And
(6) after fan is maximum (top) speed and establishes revolution counter, into operational mode.
2. multi-fan according to claim 1 is according to the control method of temperature adjustment revolving speed, which is characterized in that carry out step
(1) in, after starting up's system, micro controller exports the PWM duty cycle ascending or descending to each fan.
3. multi-fan according to claim 1 is according to the control method of temperature adjustment revolving speed, which is characterized in that carry out step
(5) it in, when the PWM duty cycle of any fan is unable to reach revolving speed requirement, generates fan fails signal and notifies system.
4. multi-fan according to claim 1 is according to the control method of temperature adjustment revolving speed, which is characterized in that carry out step
(2) in, tachometer data is also recorded in Nonvolatile Random Access memory or storage media, and is stored in micro controller circuit board
In, when booting next time, list procedure is built in omission.
5. multi-fan according to claim 1 is according to the control method of temperature adjustment revolving speed, which is characterized in that the PWM is accounted for
The relevant parameter of empty ratio is replaced with voltage, to enter operational mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810179395.4A CN110230605A (en) | 2018-03-05 | 2018-03-05 | Multi-fan adjusts the control method of revolving speed according to temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810179395.4A CN110230605A (en) | 2018-03-05 | 2018-03-05 | Multi-fan adjusts the control method of revolving speed according to temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110230605A true CN110230605A (en) | 2019-09-13 |
Family
ID=67861615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810179395.4A Pending CN110230605A (en) | 2018-03-05 | 2018-03-05 | Multi-fan adjusts the control method of revolving speed according to temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110230605A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113359963A (en) * | 2021-04-29 | 2021-09-07 | 山东英信计算机技术有限公司 | Method, device and equipment for monitoring fan aging and readable medium |
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|---|---|---|---|---|
| US20060178786A1 (en) * | 2005-02-09 | 2006-08-10 | Nitin Bhagwath | Multifunctional control of cooling systems for computers |
| US20090040469A1 (en) * | 2007-08-10 | 2009-02-12 | Kabushiki Kaisha Toshiba | Projection display apparatus and controlling method for projection display apparatus |
| US20090289590A1 (en) * | 2008-05-23 | 2009-11-26 | Huang Pai-Ching | System and method for compensating characteristics of a fan |
| CN102262570A (en) * | 2010-05-28 | 2011-11-30 | 英业达股份有限公司 | Method for updating fan control table |
| CN103835972A (en) * | 2012-11-20 | 2014-06-04 | 英业达科技有限公司 | Fan rotating speed control system and method for control rotating speed of fan |
| US20150226557A1 (en) * | 2014-02-12 | 2015-08-13 | Murata Manufacturing Co., Ltd. | Drive circuit for mems resonator startup |
-
2018
- 2018-03-05 CN CN201810179395.4A patent/CN110230605A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060178786A1 (en) * | 2005-02-09 | 2006-08-10 | Nitin Bhagwath | Multifunctional control of cooling systems for computers |
| US20090040469A1 (en) * | 2007-08-10 | 2009-02-12 | Kabushiki Kaisha Toshiba | Projection display apparatus and controlling method for projection display apparatus |
| US20090289590A1 (en) * | 2008-05-23 | 2009-11-26 | Huang Pai-Ching | System and method for compensating characteristics of a fan |
| CN102262570A (en) * | 2010-05-28 | 2011-11-30 | 英业达股份有限公司 | Method for updating fan control table |
| CN103835972A (en) * | 2012-11-20 | 2014-06-04 | 英业达科技有限公司 | Fan rotating speed control system and method for control rotating speed of fan |
| CN103835972B (en) * | 2012-11-20 | 2015-12-23 | 英业达科技有限公司 | Fan rotary speed control system and the method in order to control rotation speed of the fan |
| US20150226557A1 (en) * | 2014-02-12 | 2015-08-13 | Murata Manufacturing Co., Ltd. | Drive circuit for mems resonator startup |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113359963A (en) * | 2021-04-29 | 2021-09-07 | 山东英信计算机技术有限公司 | Method, device and equipment for monitoring fan aging and readable medium |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20190913 |