CN102261343A - Device and method for speed regulation of fan - Google Patents
Device and method for speed regulation of fan Download PDFInfo
- Publication number
- CN102261343A CN102261343A CN201010185280XA CN201010185280A CN102261343A CN 102261343 A CN102261343 A CN 102261343A CN 201010185280X A CN201010185280X A CN 201010185280XA CN 201010185280 A CN201010185280 A CN 201010185280A CN 102261343 A CN102261343 A CN 102261343A
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- CN
- China
- Prior art keywords
- fan
- control signal
- level conversion
- speed
- unit
- 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.)
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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
- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a device and a method for the speed regulation of a fan. The device comprises a level switch unit and a switch control unit, wherein the level switch unit is used for performing level switch on an inputted control signal; and the switch control unit is used for controlling the on-off of a power supply of the fan according to the signal outputted by the level switch unit. The invention also discloses a method for the speed regulation of the fan. The device and the method for the speed regulation of the fan are realized simply, and are low in power consumption and cost; and various rotate speed shifts can be designed according to requirements, the adjustment of rotate speed is accurate, and the effect is good.
Description
Technical field
The present invention relates to a kind of device and method of fan speed-regulating.
Background technique
At present, board integration in the communication field is more and more higher, and system equipment is more and more littler, especially working as veneer is operated under the high-power situation, heat dissipation problem in the equipment just becomes outstanding relatively, the heat dissipation problem of solution equipment has several different methods, and wherein fan has obtained using very widely as a kind of effective heat radiation instrument.Though the wind speed of fan is big more, radiating effect is strong more, but high wind speed also makes the noise power exponentially level in this very noisy source of fan increase, and strengthened system power dissipation, and the fan long-term work also can reduce the life-span in the full speed pattern, has just become an important step in the circuit design so regulate rotation speed of the fan how simple and effectively.
The main solution of existing fan speed-regulating is: for the fan of band speed controling signal line, by control end output speed control PWM (Pulse Width Modulation, pulse duration modulation, the abbreviation pulsewidth modulation) signal directly carries out speed governing to fan, and PWM utilizes the numeral of microprocessor to export a kind of technology that analog circut is controlled.For not with the fan of speed controling signal, mainly be the purpose that the supply voltage of control fan reaches speed governing, and adjustable to voltage, design an adjustable power supply and come, or adopt electric resistance partial pressure to realize these method too complex to the fan power supply, and the cost height, power consumption is big.
Summary of the invention
Main purpose of the present invention is to provide a kind of device and method of fan speed-regulating, and is too complicated with the fan speed-regulating that solves in the above-mentioned correlation technique, and the cost height, the problem that power consumption is big.
According to an aspect of the present invention, provide a kind of device of fan speed-regulating, having comprised: level conversion unit is used for the control signal of input is carried out level conversion; Switch control unit is used for the SC sigmal control fan power supply break-make according to level conversion unit output.
Further, described fan is 2 line fans.
Further, also comprise processor unit, be used to produce control signal.
Further, level conversion unit comprises triode and power supply.
Further, switch control unit comprises metal-oxide-semiconductor, the power supply series connection of described metal-oxide-semiconductor and fan.
Further, aforementioned control signal is the pulse width modulating signal of EDM Generator of Adjustable Duty Ratio.
Further, processor unit is according to current device state output speed regulating control signal, and described speed regulating control signal comprises the pulse width modulating signal of EDM Generator of Adjustable Duty Ratio.
Further, dutycycle is according to the height setting of device temperature.
Further, the fan supplying time is directly proportional with the low level dutycycle of pulse width modulating signal.
According to a further aspect in the invention, provide a kind of method of fan speed-regulating, having comprised: processor unit produces control signal and sends to level conversion unit; Level conversion unit carries out the control signal of input to send to switch control unit after the level conversion; Switch control unit is according to the SC sigmal control fan power supply break-make of level conversion unit output.
Further, processor unit is according to current device state output speed regulating control signal, and described speed regulating control signal comprises the pulse width modulating signal of EDM Generator of Adjustable Duty Ratio.
Because above-mentioned technical characteristics of the present invention, the device and method of a kind of fan speed-regulating provided by the invention implements simply, and is low in energy consumption, and cost neither be very high, and can design multiple rotating speed gear as required, and the rotating speed adjustment is accurate, and is effective.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic representation according to a kind of fan speed adjusting device of the embodiment of the invention;
Fig. 2 is the circuit diagram according to a kind of fan speed adjusting device of the embodiment of the invention;
Fig. 3 is the schematic representation to a plurality of fan speed-regulatings according to the embodiment of the invention;
Fig. 4 is the flow chart according to a kind of fan speed-governing method of the embodiment of the invention;
Fig. 5 is the diagram according to the dutycycle of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
The invention provides a kind of fan speed adjusting device, this device comprises the level conversion unit that input control signal is carried out level conversion, according to the switch control unit of SC sigmal control fan power supply self break-make of level conversion unit output, switch control unit is connected in series in the fan power supply.The rotation speed of the fan control signal is input to level conversion unit, level conversion unit inputs to switch control unit after adjusting the control signal level, switch control unit constantly carries out power on/off control to fan power supply according to control signal, reach the purpose of control rotation speed of the fan, the size of rotating speed can also recently be adjusted by the control signal duty.The control signal dutycycle as shown in Figure 5, control signal is meant pwm signal, this is a kind of square signal, the ratio of square wave positive level time with the square-wave cycle time is exactly dutycycle, square-wave cycle is constant, and the positive level time can be controlled by processor, has so just controlled dutycycle.
Principle of the invention block diagram as shown in Figure 1, Fig. 1 is the schematic representation according to a kind of fan speed adjusting device of the embodiment of the invention.Control signal is the speed regulating control signal of equipment main control end according to the output of work at present ambient condition, the processor unit among equipment main control end such as Fig. 1, and pwm control signal can be produced by it, and the dutycycle of pwm signal is that processor is controlled according to Current Temperatures.Control signal all be the PWM square signal of EDM Generator of Adjustable Duty Ratio generally, and the rotating speed that different dutycycles is corresponding different, system equipment (such as base station system) as required can self-defined rotating speed gears, as is lower than 0 and spends, and the PWM that exports 30% dutycycle is 1 grade; 0 degree～25 is when spending, and the PWM that exports 50% dutycycle is 2 grades etc.This speed governing pwm signal is sent into level conversion unit, and level conversion unit is changed the level magnitude of pwm signal, is adjusted into the level that is fit to switch control unit, keeps the dutycycle of former pwm signal.Send into switch control unit through the control signal after the level conversion, switch control unit is according to the control signal power supply of break-make fan constantly, and the time of on-off is recently controlled by the duty of pwm control signal.
Fig. 2 is the circuit diagram according to a kind of fan speed adjusting device of the embodiment of the invention.Level conversion unit is made up of a triode and corresponding power supply, and switch control unit is made up of a metal-oxide-semiconductor, and metal-oxide-semiconductor is connected on the power supply of fan.Triode is operated in saturation region or cut-off region, when control signal is high level, and the conducting of the triode BE utmost point, the CE conducting pulls down to low level with the metal-oxide-semiconductor G utmost point, and metal-oxide-semiconductor ends, and fan power supply disconnects; When control signal was low level, triode CE ended, the metal-oxide-semiconductor G utmost point by on move VCC to, metal-oxide-semiconductor conducting at this moment, fan normal power supply.The fan supplying time is directly proportional with the low level dutycycle of pwm control signal, and promptly the rotating speed of fan is directly proportional with the low level dutycycle of control signal.
Fig. 3 is the application drawing of the multiple a plurality of fans of control.The meaning of 2 lines, 3 lines, 4 line fans has several signaling lines to define according to this model fan:
2 lines: two power lines (positive is negative)
3 lines: two power lines, a status signal lines
4 lines: two power lines, a condition line, a control signal line.
2 line fans are meant the fan that has only two power lines, do not have special-purpose speed-regulating signal line and status signal lines.4 line fans have been meant two power lines, a speed regulating control line, a rotating speed condition line.Often used two kinds of fans in the system simultaneously, and need carry out speed regulating control simultaneously, brought with a kind of speed-regulating signal of dutycycle, for 4 line fans, this signal can directly be sent into fan respectively and carry out speed governing.For 2 line fans, speed-regulating signal is given switch control unit through after the level conversion, and switch control unit can need 2 line fans of speed governing to carry out unified speed governing to all, and switch control unit is connected on the general power of 2 line fans.System only need provide the speed regulating control line just can be to the speed governing simultaneously of multiple a plurality of fans like this.
Fig. 4 is the flow chart according to a kind of fan speed-governing method of the embodiment of the invention.The method of a kind of fan speed-regulating of the present invention may further comprise the steps:
S100: processor unit produces control signal and sends to level conversion unit;
S102: level conversion unit carries out the control signal of input to send to switch control unit after the level conversion;
The S104 switch control unit is according to the SC sigmal control fan power supply break-make of level conversion unit output.
Wherein, flat turn and change the unit and form by triode and power supply, switch control unit is made up of metal-oxide-semiconductor, the power supply series connection of described metal-oxide-semiconductor and fan, processor unit is according to current device state output speed regulating control signal, described speed regulating control signal comprises the pulse width modulating signal of EDM Generator of Adjustable Duty Ratio, and dutycycle is according to the height setting of device temperature, and the fan supplying time is directly proportional with the low level dutycycle of pulse width modulating signal.
In sum, because above-mentioned technical characteristics of the present invention, the device and method of a kind of fan speed-regulating provided by the invention implements simply, and is low in energy consumption, and cost neither be very high, and can design multiple rotating speed gear as required, and the rotating speed adjustment is accurate, and is effective.
Obviously, those skilled in the art should be understood that, above-mentioned each unit of the present invention or each step can realize with the general calculation device, they can concentrate on the single computing device, perhaps be distributed on the network that a plurality of computing device forms, alternatively, they can be realized with the executable program-code of computing device, thereby, they can be stored in the storage device and carry out by computing device, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into each integrated circuit unit respectively, perhaps a plurality of unit in them or step are made into the single integrated circuit unit and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the device of a fan speed-regulating is characterized in that, comprising:
Level conversion unit is used for the control signal of input is carried out level conversion;
Switch control unit is used for the SC sigmal control fan power supply break-make according to level conversion unit output.
2. device according to claim 1 is characterized in that, described fan is 2 line fans.
3. device according to claim 1 is characterized in that, also comprises: processor unit is used to produce control signal.
4. device according to claim 1 is characterized in that described level conversion unit comprises triode and power supply.
5. device according to claim 1 is characterized in that described switch control unit comprises metal-oxide-semiconductor, the power supply series connection of described metal-oxide-semiconductor and fan.
6. according to the arbitrary described device of claim 1 to 5, it is characterized in that described control signal is the pulse width modulating signal of EDM Generator of Adjustable Duty Ratio.
7. device according to claim 3 is characterized in that, described processor unit is according to current device state output speed regulating control signal, and described speed regulating control signal comprises the pulse width modulating signal of EDM Generator of Adjustable Duty Ratio.
8. device according to claim 6 is characterized in that, described dutycycle is according to the height setting of device temperature.
9. according to claim 6 or 7 or 8 described devices, it is characterized in that the fan supplying time is directly proportional with the low level dutycycle of pulse width modulating signal.
10. the method for a fan speed-regulating is characterized in that, comprising:
Processor unit produces control signal and sends to level conversion unit;
Level conversion unit carries out the control signal of input to send to switch control unit after the level conversion;
Switch control unit is according to the SC sigmal control fan power supply break-make of level conversion unit output.
11. method according to claim 10 is characterized in that, described processor unit is according to current device state output speed regulating control signal, and described speed regulating control signal comprises the pulse width modulating signal of EDM Generator of Adjustable Duty Ratio.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010185280XA CN102261343A (en) | 2010-05-26 | 2010-05-26 | Device and method for speed regulation of fan |
| PCT/CN2011/072994 WO2011147235A1 (en) | 2010-05-26 | 2011-04-19 | Device and method of fan speed regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010185280XA CN102261343A (en) | 2010-05-26 | 2010-05-26 | Device and method for speed regulation of fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102261343A true CN102261343A (en) | 2011-11-30 |
Family
ID=45003283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010185280XA Pending CN102261343A (en) | 2010-05-26 | 2010-05-26 | Device and method for speed regulation of fan |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102261343A (en) |
| WO (1) | WO2011147235A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103793039A (en) * | 2012-10-31 | 2014-05-14 | 鸿富锦精密工业（深圳）有限公司 | Temperature control system and method for processor |
| CN104279175A (en) * | 2013-07-10 | 2015-01-14 | 鼎点视讯科技有限公司 | Fan control method, device and system |
| CN106054077A (en) * | 2016-07-08 | 2016-10-26 | 珠海格力电器股份有限公司 | Speed regulation voltage switching circuit and power strip |
| CN106286370A (en) * | 2016-10-27 | 2017-01-04 | 郑州云海信息技术有限公司 | A kind of method optimizing rotation speed of the fan monitoring precision |
| CN107842520A (en) * | 2017-11-27 | 2018-03-27 | 卫星电子（中山）有限公司 | A kind of fan control system for being easy to unit replacement |
| CN108988700A (en) * | 2018-07-03 | 2018-12-11 | 珠海格力电器股份有限公司 | A kind of speed setting unit, motor and its method for adjusting rotation speed |
| CN110285086A (en) * | 2019-05-09 | 2019-09-27 | 苏州浪潮智能科技有限公司 | A kind of fan control system, method and server |
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| US7479753B1 (en) * | 2004-02-24 | 2009-01-20 | Nvidia Corporation | Fan speed controller |
| CN101425770A (en) * | 2008-11-28 | 2009-05-06 | 朱鸽 | Stepless speed regulator for DC electric motor |
| US20090175602A1 (en) * | 2008-01-04 | 2009-07-09 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd | Circuit for controlling rotation speed of computer fan |
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| JP2002089559A (en) * | 2000-09-12 | 2002-03-27 | Ebara Corp | Magnetic bearing device |
| US7772902B2 (en) * | 2003-09-09 | 2010-08-10 | Delta Electronics, Inc. | PWM buffer circuit for adjusting a frequency and a duty cycle of a PWM signal |
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2010
- 2010-05-26 CN CN201010185280XA patent/CN102261343A/en active Pending
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- 2011-04-19 WO PCT/CN2011/072994 patent/WO2011147235A1/en active Application Filing
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| WO1993014559A1 (en) * | 1992-01-21 | 1993-07-22 | Nartron Corporation | Pulse width modulation power circuit |
| US7479753B1 (en) * | 2004-02-24 | 2009-01-20 | Nvidia Corporation | Fan speed controller |
| CN2828890Y (en) * | 2005-10-25 | 2006-10-18 | 杭州华为三康技术有限公司 | Fan speed regulating control circuit |
| US20090175602A1 (en) * | 2008-01-04 | 2009-07-09 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd | Circuit for controlling rotation speed of computer fan |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103793039A (en) * | 2012-10-31 | 2014-05-14 | 鸿富锦精密工业（深圳）有限公司 | Temperature control system and method for processor |
| CN104279175A (en) * | 2013-07-10 | 2015-01-14 | 鼎点视讯科技有限公司 | Fan control method, device and system |
| CN106054077A (en) * | 2016-07-08 | 2016-10-26 | 珠海格力电器股份有限公司 | Speed regulation voltage switching circuit and power strip |
| CN106286370A (en) * | 2016-10-27 | 2017-01-04 | 郑州云海信息技术有限公司 | A kind of method optimizing rotation speed of the fan monitoring precision |
| CN107842520A (en) * | 2017-11-27 | 2018-03-27 | 卫星电子（中山）有限公司 | A kind of fan control system for being easy to unit replacement |
| CN107842520B (en) * | 2017-11-27 | 2023-07-11 | 卫星电子（中山）有限公司 | Fan control system convenient for unit replacement |
| CN108988700A (en) * | 2018-07-03 | 2018-12-11 | 珠海格力电器股份有限公司 | A kind of speed setting unit, motor and its method for adjusting rotation speed |
| CN110285086A (en) * | 2019-05-09 | 2019-09-27 | 苏州浪潮智能科技有限公司 | A kind of fan control system, method and server |
| US11719251B2 (en) | 2019-05-09 | 2023-08-08 | Inspur Suzhou Intelligent Technology Co., Ltd | Fan control system, method and server wherein PWM pin and TACH pin are utilized to control a fan based on a mode control instruction |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011147235A1 (en) | 2011-12-01 |
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Application publication date: 20111130 |