CN104279175A - Fan control method, device and system - Google Patents
Fan control method, device and system Download PDFInfo
- Publication number
- CN104279175A CN104279175A CN201310289211.7A CN201310289211A CN104279175A CN 104279175 A CN104279175 A CN 104279175A CN 201310289211 A CN201310289211 A CN 201310289211A CN 104279175 A CN104279175 A CN 104279175A
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- Prior art keywords
- signal
- fan
- voltage pulse
- pulse signal
- line
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Classifications
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- 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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- 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
- F05D2270/01—Purpose of the control system
- F05D2270/02—Purpose of the control system to control rotational speed (n)
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses a fan control method, device and system. The device comprises a three-line fan, a controller and a first signal converter, wherein the controller is used for generating a low-voltage pulse signal; the first signal converter is connected between the controller and the three-line fan, and is used for converting the low-voltage pulse signal into a high-voltage pulse signal and controlling the rotating speed of the three-line fan by using the high-voltage pulse signal. Through the fan control method, device and system, the effect of eliminating the noise influence of a fan signal on a system signal is eliminated, and good system signal quality is ensured.
Description
Technical field
The present invention relates to fan control field, in particular to a kind of control method for fan, Apparatus and system.
Background technique
In common electronics, system signal ground is mainly for the path that the backflow of the signal of communication between two chip blocks or module is flow through, in general the electric current flow through very little system signal, if but fan earth signal in electronics is unclean, be subject to the impact of fan signal system signal, the level on system signal ground may be made higher than 0V, thus cause signal to judge by accident, and then make circuit board operation irregularity.When using fan in prior art, use three line fans three line fan earth signals and signal ground can not be isolated, system signal is subject to the impact of fan signal, signal quality may be caused to be deteriorated, and by the three line fans ground scheme of isolating with signal ground, need employing four line fan, but the cost of four line fans is higher.
Cause, to the problem of system signal erroneous judgement, not yet proposing effective solution at present by fan effect of signals for system signal in prior art.
Summary of the invention
Cause the problem that system signal is judged by accident by fan effect of signals for relevant technology systems signal, at present effective solution is not yet proposed, for this reason, main purpose of the present invention is to provide a kind of control method for fan, Apparatus and system, to solve the problem.
To achieve these goals, according to an aspect of the present invention, provide a kind of fan control device, this device comprises: three line fans; Controller, for sending low voltage pulse signal; First signal adapter, is connected between controller and three line fans, for low voltage pulse signal is converted to high-voltage pulse signal, and uses high-voltage pulse signal to control the rotating speed of three line fans.
Further, fan control device also comprises: switch, is connected between the first signal adapter and three line fans, and high-voltage pulse signal is used for the unlatching of control switch or turns off with the rotating speed controlling three line fans.
Further, switch is metal-oxide-semiconductor.
Further, fan control device also comprises: secondary signal transducer, is connected between controller and three line fans, and the high pressure tach signal for being produced by three line fan turns feeds back to controller after being converted to low pressure tach signal.
Further, the first signal adapter and secondary signal transducer are optocoupler.
To achieve these goals, according to an aspect of the present invention, provide a kind of fan control system, this system comprises fan control device.
To achieve these goals, according to an aspect of the present invention, provide a kind of control method for fan, the method comprises: low voltage pulse signal is converted to high-voltage pulse signal; High-voltage pulse signal is used to control the rotating speed of three line fans.
Further, the step using high-voltage pulse signal to control the rotating speed of three line fans comprises: the unlatching or the shutoff that use high-voltage pulse signal control switch, to control the rotating speed of three line fans.
Further, after use high-voltage pulse signal controls the rotating speed of three line fans, method also comprises: feed back to controller after the high pressure tach signal that three line fan turns produce is converted to low pressure tach signal.
Pass through the present invention, by the first signal adapter, the low voltage pulse signal of controller can be converted to high-voltage pulse signal, high-voltage pulse signal is used to control the rotating speed of three line fans, thus achieve the object using low voltage pulse signal to control three line fans, the signal ground of the signal ground of three line fans and system can be isolated, eliminate the impact of fan signal on system signal, solve the problem that system signal in prior art causes by fan effect of signals judging by accident system signal, achieve and eliminate fan signal to the effect of the noise effect of system signal, ensure that good system signal quality, and use three line fan costs low, thus can isolated system signal and fan signal at low cost, ensure signal quality.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the fan control device according to the embodiment of the present invention;
Fig. 2 is the structural representation according to fan control device embodiment illustrated in fig. 1; And
Fig. 3 is the flow chart of the control method for fan according to the embodiment of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Fig. 1 is the structural representation of the fan control device according to the embodiment of the present invention.Fig. 2 is the structural representation according to fan control device embodiment illustrated in fig. 1.As depicted in figs. 1 and 2, this device can comprise: three line fans 10; Controller 30, for sending low voltage pulse signal; First signal adapter 50, is connected between controller 30 and three line fans 10, for low voltage pulse signal is converted to high-voltage pulse signal, and uses high-voltage pulse signal to control the rotating speed of three line fans 10.
Adopt the present invention, by the first signal adapter, the low voltage pulse signal of controller can be converted to high-voltage pulse signal, high-voltage pulse signal is used to control the rotating speed of three line fans, thus achieve the object using low voltage pulse signal to control three line fans, the signal ground of the signal ground of three line fans and system can be isolated, eliminate the impact of fan signal on system signal, solve the problem that system signal in prior art causes by fan effect of signals judging by accident system signal, achieve and eliminate fan signal to the effect of the noise effect of system signal, ensure that good system signal quality, and use three line fan costs low, thus can isolated system signal and fan signal at low cost, ensure signal quality.
Wherein, the frequency of the low voltage pulse signal in above-described embodiment can remain on the frequency of 100Hz or lower, to reduce the damage that high-frequency pulse signal may cause fan, thus makes fan can the work of safety and stability.
According to the abovementioned embodiments of the present invention, fan control device can also comprise: switch, is connected between the first signal adapter and three line fans, and high-voltage pulse signal is used for the unlatching of control switch or turns off with the rotating speed controlling three line fans.Preferably, switch can be metal-oxide-semiconductor.
Particularly, by the first signal adapter and switch with the use of the isolated controlling that can realize well three line fans, and the control of rotation speed of the fan exactly can be realized according to the low voltage pulse signal of controller.
More specifically, the height of rotation speed of the fan can be controlled by the voltage swing of low voltage pulse signal: when metal-oxide-semiconductor is opened, fan keeps high rotating speed; When metal-oxide-semiconductor is by when opening excessive to closedown, fan maintains short time rotation according to inertia, and speed is slack-off gradually; Before fan finally stops, metal-oxide-semiconductor is opened once again, and fan speed is by changing to slowly at a high speed.Above-mentioned control procedure is the opening and closing by controlling metal-oxide-semiconductor, produces pwm signal, and then controls the process of rotation speed of the fan, can open and closed time ratio (dutycycle of pwm signal), realizing the accurate control of rotation speed of the fan by reasonably controlling metal-oxide-semiconductor.
In the above embodiment of the present invention, fan control device can also comprise: secondary signal transducer, be connected between controller and three line fans, the high pressure tach signal for being produced by three line fan turns feeds back to controller after being converted to low pressure tach signal.
Particularly, by secondary signal transducer, the closed loop control to three line high-pressure fans can be realized, and what controller exported is low voltage pulse signal, thus can realize adopting low-voltage signal to accurate, the isolated controlling of three line fans, control simple, cost is low and signal quality good.
Preferably, first signal adapter of above-described embodiment and secondary signal transducer can be all optocoupler.
Present invention also offers a kind of fan control system, this system can comprise the fan control device of any one embodiment above-mentioned.
Adopt the present invention, by the first signal adapter, the low voltage pulse signal of controller is converted to high-voltage pulse signal, high-voltage pulse signal is used to control the rotating speed of three line fans, thus achieve the object using low voltage pulse signal to control three line fans, the signal ground of the signal ground of three line fans and system can be isolated, eliminate the impact of fan signal on system signal, solve in prior art and reduce system signal by cost very high problem during fan noise effect, achieve can user cost very low three line fans eliminate fan signal to the noise effect of system signal, ensure that good system signal quality.
Fig. 3 is the flow chart of the control method for fan according to the embodiment of the present invention, and the method comprises the steps: as shown in Figure 3
Step S102, is converted to high-voltage pulse signal by low voltage pulse signal.
Step S104, uses high-voltage pulse signal to control the rotating speed of three line fans.
Adopt the present invention, by the first signal adapter, the low voltage pulse signal of controller can be converted to high-voltage pulse signal, high-voltage pulse signal is used to control the rotating speed of three line fans, thus achieve the object using low voltage pulse signal to control three line fans, the signal ground of the signal ground of three line fans and system can be isolated, eliminate the impact of fan signal on system signal, solve in prior art and reduce system signal by cost very high problem during fan noise effect, achieve can user cost very low three line fans eliminate fan signal to the noise effect of system signal, ensure that good system signal quality.
In the above embodiment of the present invention, the step using high-voltage pulse signal to control the rotating speed of three line fans can comprise: the unlatching or the shutoff that use high-voltage pulse signal control switch, to control the rotating speed of three line fans.
According to the abovementioned embodiments of the present invention, after use high-voltage pulse signal controls the rotating speed of three line fans, method can also comprise: feed back to controller after the high pressure tach signal that three line fan turns produce is converted to low pressure tach signal.
It should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
From above description, can find out, present invention achieves following technique effect: adopt the present invention, by the first signal adapter, the low voltage pulse signal of controller is converted to high-voltage pulse signal, high-voltage pulse signal is used to control the rotating speed of three line fans, thus achieve the object using low voltage pulse signal to control three line fans, the signal ground of the signal ground of three line fans and system can be isolated, eliminate the impact of fan signal on system signal, solve in prior art and reduce system signal by cost very high problem during fan noise effect, achieve can user cost very low three line fans eliminate fan signal to the noise effect of system signal, ensure that good system signal quality.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general computing device, they can concentrate on single computing device, or be distributed on network that multiple computing device forms, alternatively, they can realize with the executable program-code of computing device, thus, they can be stored and be performed by computing device in the storage device, or they are made into each integrated circuit module respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a fan control device, is characterized in that, comprising:
Three line fans;
Controller, for sending low voltage pulse signal;
First signal adapter, is connected between described controller and described three line fans, for described low voltage pulse signal is converted to high-voltage pulse signal, and uses described high-voltage pulse signal to control the rotating speed of described three line fans.
2. fan control device according to claim 1, is characterized in that, described fan control device also comprises:
Switch, is connected between described first signal adapter and described three line fans, and described high-voltage pulse signal is for controlling the unlatching of described switch or turning off with the rotating speed controlling described three line fans.
3. fan control device according to claim 2, is characterized in that, described switch is metal-oxide-semiconductor.
4. fan control device according to claim 1, is characterized in that, described fan control device also comprises:
Secondary signal transducer, is connected between described controller and described three line fans, and the high pressure tach signal for being produced by described three line fan turns feeds back to described controller after being converted to low pressure tach signal.
5. fan control device according to claim 4, is characterized in that, described first signal adapter and described secondary signal transducer are optocoupler.
6. a fan control system, is characterized in that, comprising: the fan control device in claim 1-5 described in any one.
7. a control method for fan, is characterized in that, comprising:
Described low voltage pulse signal is converted to high-voltage pulse signal;
Described high-voltage pulse signal is used to control the rotating speed of described three line fans.
8. control method for fan according to claim 7, is characterized in that, the step using described high-voltage pulse signal to control the rotating speed of described three line fans comprises:
Use unlatching or the shutoff of described high-voltage pulse signal control switch, to control the rotating speed of described three line fans.
9. control method for fan according to claim 8, is characterized in that, after the rotating speed using the described three line fans of described high-voltage pulse signal control, described method also comprises:
Described controller is fed back to after the high pressure tach signal that described three line fan turns produce is converted to low pressure tach signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310289211.7A CN104279175A (en) | 2013-07-10 | 2013-07-10 | Fan control method, device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310289211.7A CN104279175A (en) | 2013-07-10 | 2013-07-10 | Fan control method, device and system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104279175A true CN104279175A (en) | 2015-01-14 |
Family
ID=52254404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310289211.7A Pending CN104279175A (en) | 2013-07-10 | 2013-07-10 | Fan control method, device and system |
Country Status (1)
| Country | Link |
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| CN (1) | CN104279175A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080143313A1 (en) * | 2006-12-18 | 2008-06-19 | Tang Zong-Hong | Adjusting method and device of sensitivity of signal interpretation |
| CN101714812A (en) * | 2008-10-08 | 2010-05-26 | 鸿富锦精密工业（深圳）有限公司 | Fan control circuit |
| CN101985946A (en) * | 2010-10-22 | 2011-03-16 | 北京星网锐捷网络技术有限公司 | Fan speed-regulation control circuit as well as control method and electronic device thereof |
| CN102003399A (en) * | 2010-12-20 | 2011-04-06 | 天津诺尔哈顿电器制造有限公司 | Fan time delay control circuit |
| CN102261343A (en) * | 2010-05-26 | 2011-11-30 | 中兴通讯股份有限公司 | Device and method for speed regulation of fan |
| CN102828980A (en) * | 2012-09-11 | 2012-12-19 | 中兴通讯股份有限公司 | Heat radiation fan control device and electronic device |
-
2013
- 2013-07-10 CN CN201310289211.7A patent/CN104279175A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080143313A1 (en) * | 2006-12-18 | 2008-06-19 | Tang Zong-Hong | Adjusting method and device of sensitivity of signal interpretation |
| CN101714812A (en) * | 2008-10-08 | 2010-05-26 | 鸿富锦精密工业（深圳）有限公司 | Fan control circuit |
| CN102261343A (en) * | 2010-05-26 | 2011-11-30 | 中兴通讯股份有限公司 | Device and method for speed regulation of fan |
| CN101985946A (en) * | 2010-10-22 | 2011-03-16 | 北京星网锐捷网络技术有限公司 | Fan speed-regulation control circuit as well as control method and electronic device thereof |
| CN102003399A (en) * | 2010-12-20 | 2011-04-06 | 天津诺尔哈顿电器制造有限公司 | Fan time delay control circuit |
| CN102828980A (en) * | 2012-09-11 | 2012-12-19 | 中兴通讯股份有限公司 | Heat radiation fan control device and electronic device |
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Application publication date: 20150114 |
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