CN110043496A - Fan control system and method - Google Patents
Fan control system and method Download PDFInfo
- Publication number
- CN110043496A CN110043496A CN201810040533.0A CN201810040533A CN110043496A CN 110043496 A CN110043496 A CN 110043496A CN 201810040533 A CN201810040533 A CN 201810040533A CN 110043496 A CN110043496 A CN 110043496A
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- China
- Prior art keywords
- fan
- special burst
- burst pattern
- pattern
- pulse signal
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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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20209—Thermal management, e.g. fan control
Abstract
The present invention provides a kind of fan control system and method, it includes a fan, one control unit and a fan chip, fan chip includes an instruction catalogue, one first special burst pattern and one second special burst pattern are respectively defined in fan chip, first special burst pattern represents the code of one first form, second special burst pattern represents the code of a second form, instruction catalogue records an at least control instruction, each control instruction is respectively corresponding to a code character string, when fan chip receives a series of pulse signal from control unit and differentiates code character string representated by this series of pulse signal, and corresponding control instruction is inquired from instruction catalogue according to the code character string determined, to execute a corresponding operation according to an at least operating parameters or control fan for the control instruction setting fan chip inquired.
Description
Technical field
The present invention relates to a kind of fan control system of chopsticks and methods, refer in particular to a kind of control using special burst pattern
The system and method for the parameter of instruction setting fan chip.
Background technique
Information development makes rapid progress now, and electronic device is endowed more functions, to promote use value.It is multi-functional
It is internal it is generally necessary to which more multicomponent is arranged for electronic device, these components not only will increase the current densities of electronic device, and meeting
Increase temperature when electronic device running.It not overheated when in order to allow electronic device to operate, the inside of electronic device would generally be into
A fan is arranged in one step.To assist the electronic device in running that can radiate using the rotation of fan.The operating of fan usually by
One fan chip is controlled.By the control of fan chip, to enable the revolving speed of fan can achieve the revolving speed of demand.
Fan chip generally uses the operating of easy two piece-root graftings foot (such as input pin and output connecting pin) control fan.With
The control of basic rotation speed of the fan is only able to achieve using this two piece-root graftings foot toward fan chip, if fan chip is intended to reach further
Control, need to build more pins.However, increasing the quantity of pin on fan chip, in current electronic device
Communication interface, such as I2C, SPI, UART interface can be not necessarily compatible with, and in the trend of electronic device miniaturization, not necessarily
There are the more pins of enough spaces.
Summary of the invention
A purpose of the invention is to propose that a kind of fan control system and method, fan control system include a wind
Fan, a control unit and a fan chip, one first special burst pattern and one second special burst pattern into fan chip,
First special burst pattern represents the code of one first form, and the second special burst pattern represents the code of a second form, when
When fan chip receives a series of pulse signal from control unit via an input pin, this series of pulse news will be differentiated
A code character string representated by number, and a corresponding control instruction is inquired according to the code character string determined, with basis
An at least operating parameters for the control instruction setting fan chip inquired.
To reach above-mentioned purpose, the present invention provides a kind of fan control system, comprising: a fan；One control unit；And one
Fan chip, including an input pin and an output connecting pin, store an instruction catalogue, define a fan rotational pulse pattern, one
First special burst pattern and one second special burst pattern, input pin connect control unit, and output connecting pin connects fan, the
Code of the one special burst pattern to represent one first form, generation of the second special burst pattern to represent a second form
Code, instruction catalogue record an at least control instruction, and each control instruction is respectively corresponding to a code character string；Wherein, when fan core
When piece receives a pulse signal and differentiates that pulse signal is a pulse signal with fan rotational pulse pattern from control unit,
It is rotated according to the pulse signal driving fan of fan rotational pulse pattern；When fan chip is a succession of from control unit reception
Pulse signal and differentiate that a series of pulse signal is all the pulse signal of the first special burst pattern, is all the second special arteries and veins
When the pulse signal for rushing pattern or the pulse signal as combined by the first special burst pattern and the second special burst pattern, sentence
It code character string representated by not a series of pulse signal and is inquired from instruction catalogue according to the code character string determined
Corresponding control instruction, and set an at least operating parameters for fan chip with the control instruction inquired or control the fan and hold
The corresponding operation of row one.
In one embodiment of the invention, the code of the first form is " 0 ", and the code of the second form is " 1 ".
In one embodiment of the invention, the first special burst pattern and the second special burst pattern are symmetrical pulse sample
Formula.
In one embodiment of the invention, fan chip, which more defines, a third special burst pattern, third special burst pattern
It include the special arteries and veins of an at least third when fan chip is received from control unit to represent the end code of a control instruction
When rushing the pulse signal of pattern, it will be appreciated that belonging to control instruction that code character string has transmitted and finish.
In one embodiment of the invention, the pulse for the pulse signal that fan chip is transmitted using firmware discrimination control unit
For fan rotational pulse pattern, the first special burst pattern, the second special burst pattern or third special burst pattern.
In one embodiment of the invention, fan chip has further included a comparison circuit, and fan chip is distinguished using comparison circuit
The pulse for the pulse signal that control unit is transmitted is fan rotational pulse pattern, the first special burst pattern, the second special arteries and veins
Rush pattern or third special burst pattern.
The present invention provides a kind of control method for fan again, applies in a fan control system, fan control system packet
Include a fan, a control unit and a fan chip, the step of fan chip includes an instruction catalogue, control method for fan includes:
A fan rotational pulse pattern, one first special burst pattern and one second special burst pattern are defined into fan chip,
In code of the first special burst pattern to represent one first form, the second special burst pattern is to represent a second form
Code；An at least control instruction is recorded into instruction catalogue, wherein each control instruction is respectively corresponding to a code character string；When
Fan chip receives a pulse signal from control unit and differentiates that pulse signal is the pulse signal of a fan rotational pulse pattern
When driving fan rotated；When fan chip receives a series of pulse signal from control unit and differentiates a series of pulse
Signal be all the pulse signal of the first special burst pattern, be all the second special burst pattern pulse signal or by first spy
Generation representated by a series of pulse signal is differentiated when pulse signal combined by different pulse pattern and the second special burst pattern
Code character string；Corresponding control instruction is inquired from instruction catalogue according to the code character string determined；And the control to inquire
An at least operating parameters or control fan for system instruction setting fan chip execute a corresponding operation.
The code of first form is " 0 ", and the code of the second form is " 1 ".
In one embodiment of the invention, further include the following steps: definition has a third special burst pattern into fan chip,
A wherein end code of third special burst pattern representative code character string；And when fan chip receives packet from control unit
It will be appreciated that code character string belonging to control instruction has transmitted when containing at least pulse signal of a third special burst pattern
Finish.
The fan chip distinguishes that the pulse that described control unit is transmitted is interrogated using a firmware or a comparison circuit
Number pulse be the fan rotational pulse pattern, the first special burst pattern, the second special burst pattern or institute
State third special burst pattern.
The beneficial effects of the present invention are: fan control system of the present invention and method, fan control system include a fan,
One control unit and a fan chip, one first special burst pattern and one second special burst pattern are into fan chip, and
One special burst pattern represents the code of one first form, and the second special burst pattern represents the code of a second form, works as wind
When fan chip receives a series of pulse signal from control unit via an input pin, this series of pulse signal will be differentiated
A representative code character string, and a corresponding control instruction is inquired according to the code character string determined, it is looked into basis
An at least operating parameters for the control instruction setting fan chip ask out.
Detailed description of the invention
Fig. 1: the structural schematic diagram of one embodiment of fan control system of the present invention.
Fig. 2: the signal waveform figure of present invention difference pulse signal.
Drawing reference numeral: 100: fan control system；101: control instruction；10: fan chip；11: firmware；111: fan turns
Moving pulse pattern；113: the first special burst patterns；115: the second special burst patterns；117: third special burst pattern；13:
Instruction catalogue；131: control instruction；132: control instruction；139: control instruction；21: pulse signal；22: pulse signal；23: pulse
Signal；24: pulse signal；30: control unit；50: fan.
Specific embodiment
Fig. 1 and Fig. 2 is please referred to, is the structural schematic diagram and pulse of the present invention news of one embodiment of fan control system of the present invention
Number signal waveform figure.As shown in Figure 1, fan control system 100 of the present invention includes a fan chip 10, a control unit 30
An and fan 50.The pin of fan chip 10 includes an input pin (DI), an output connecting pin (FG), a power pin and one
It is grounded pin.Fan chip 10 connects control unit 30 via input pin (DI), and connects fan via output connecting pin (FG)
50.Control unit 30 can also be controller, a processor or a BIOS (the Basic Input/Output in an electronic device
System), to transmit an at least pulse signal to fan chip 10, fan 50 is driven to be transported to control fan chip 10
Turn, the operating parameters of setting fan chip 10 or control fan 50 execute a corresponding operation.
Fan chip 10 includes one instruction catalogue 13 of storage, and definition has a fan rotational pulse pattern 111, one first special
Pulse pattern 113 and one second special burst pattern 115.In an embodiment of the present invention, it is tough to can also be used one for fan chip 10
Body 11 or a hardware circuit define fan rotational pulse pattern 111, the first special burst pattern 113 and the second special burst pattern
115.In one embodiment of the invention, the first special burst pattern 113 and the second special burst pattern 115 are respectively provided with a larger change
The pulse duty factor of change and the first special burst pattern 113 and the second special burst pattern 115 can also be symmetrical pulse
Pattern, such as the duty ratio of the first special burst pattern 113 is 10%, and the duty ratio of the second special burst pattern 115 is
90%.Code of the first special burst pattern 113 to represent one first form, the second special burst pattern 115 is to represent
The code of one the second form.In an embodiment of the present invention, the code of the first form is " 0 ", and the code of the second form is
"1".Instruction catalogue 13 records an at least control instruction 131,132,139, and each control instruction 131,132,139 is respectively corresponding to one
Code character string and respectively setting the operating parameters of a fan chip 10, such as: the code character string of control instruction 131 is
" 00000000 " and the parameter to set a low temperature mode, the code character string of control instruction 132 are " 01010101 " and use
To set the parameter of a low noise mode, the code character string of control instruction 139 is " 11111111 " and to set a high revolving speed
The parameter of mode.
Further cooperation is referring to Fig.2, when the fan chip 10 to be required of control unit 30 executes a normal fan running journey
When sequence, the arteries and veins of at least pulse signal 21 of a fan rotational pulse pattern 111 and transmission fan rotational pulse pattern 111 will be generated
Signal 21 is rushed to fan chip 10.Fan chip 10 receives the pulse of fan rotational pulse pattern 111 via input pin (DI)
Signal 21, and according to duty ratio (such as Duty of each pulse in the pulse signal 21 of fan rotational pulse pattern 111
Cycle=60%) the corresponding control instruction 101 for generating a rotation speed of the fan, and sequentially transmit fan via output connecting pin (FG) and turn
The control instruction 101 of speed is to fan 50.Fan 50 by according to the requirement of the control instruction 101 of rotation speed of the fan with a specified revolving speed
Execute operating.
Alternatively, will be passed when control unit 30 is intended to set the operating parameters of a fan chip 10 for fan chip 10
Send it is a succession of include the first special burst pattern 113 and/or the second special burst pattern 115 pulse signal 22/23/24 to
Fan chip 10.After fan chip 10 receives this series of pulse signal 22/23/24, this series of pulse signal is differentiated
Code character string representated by 22/23/24 and corresponding control is inquired from instruction catalogue 13 according to the code character string determined
System instruction 131/132/139, and joined at least one running that the control instruction 131/132/139 inquired sets fan chip 10
Number or control fan 50 execute a corresponding operation.
It, will when control unit 30 is intended to set the parameter of a low temperature mode for fan chip 10 by taking an embodiment as an example
A succession of pulse signal 22 for being all the first special burst pattern 113 is transmitted to fan chip 10.Fan chip 10 receives pulse
After signal 22, differentiate that code character string representated by pulse signal 22 is " 00000000 ", and according to the code character determined
String " 00000000 " inquires corresponding control instruction 131 from instruction catalogue 13, and is required with the control instruction 131 inquired tough
The parameter setting of the execution low temperature mode of body 11.By taking another embodiment as an example, when control unit 30 is intended to set fan chip 10
When the parameter of one low noise mode, the arteries and veins as combined by the first special burst pattern 113 and the second special burst pattern 115 will be transmitted
Signal 23 is rushed to fan chip 10.After fan chip 10 receives pulse signal 23, code word representated by pulse signal 23 is differentiated
Symbol string is " 01010101 ", and corresponding control is inquired from instruction catalogue 13 according to the code character string " 01010101 " determined
System instructs 132, and the parameter setting of the execution low noise mode of firmware 11 is required with the control instruction 132 inquired.Alternatively, with another
For embodiment, when control unit 30 is intended to set the parameter of a high revolving speed mode for fan chip 10, it will transmit a succession of
It is all the pulse signal 24 of the second special burst pattern 115 to fan chip 10.After fan chip 10 receives pulse signal 24, sentence
Code character string representated by other pulse signal 24 is " 11111111 ", and according to the code character string " 11111111 " determined
Corresponding control instruction 139 is inquired from instruction catalogue 13, and requires firmware 11 to execute high turn with the control instruction 139 inquired
The parameter setting of fast mode.Above three embodiments are only section Examples of the invention, and in this, the present invention can also be in order to
Different operating parameters or control fan 50 are set to execute different operations and define between fan chip 10 and control unit 30
More control instructions and its code character string.
Further, fan chip 10, which more defines, a third special burst pattern 117.Similarly, fan chip 10 passes through
By firmware 11 or hardware definition third special burst pattern 117.Third special burst pattern 117 is to represent a control instruction
131/132/139 end code " E ".It include the special arteries and veins of an at least third when fan chip 10 is received from control unit 30
When rushing the pulse signal 22/23/24 of pattern 117, the code word of pulse pattern belonging to control instruction 131/132/139 will be appreciated that
Symbol string, which has transmitted, to be finished.
Furthermore fan chip 10 of the present invention differentiates that control unit 30 transmits except selection in a manner of a firmware (such as firmware 11)
Pulse signal 21/22/23/24 in pulse be that fan rotational pulse pattern 111, the first special burst pattern 113, second are special
Different pulse pattern 115 or the third special burst pattern 117；Alternatively, fan chip 10 of the present invention also can choose with a hardware
In the pulse signal 21/22/23/24 that mode (comparison circuit as composed by comparator) identification control unit 30 is transmitted
Pulse is fan rotational pulse pattern 111, the first special burst pattern 113, the second special burst pattern 115 or the special arteries and veins of third
Rush pattern 117.
In this, fan chip 10 of the present invention can receive a series of pulse from control unit 30 via input pin (DI)
Signal 22/23/24 will differentiate a code character string representated by this series of pulse signal 22/23/24, and according to differentiation
Code character string out inquires a corresponding control instruction 131/132/139, according to the control instruction 131/ inquired
132/139 sets an at least operating parameters for fan chip 10 and fan chip 10 is enabled to control fan 10 in a demand
It is operated under operating condition.
As described above, a preferred embodiment only of the invention is not used to limit the scope of implementation of the present invention,
It is i.e. all according to shape, construction described in the claims in the present invention, feature and spirit institute equivalent changes and modifications for it, should be included in
In claim of the invention.
Claims (10)
1. a kind of fan control system, which is characterized in that it includes:
One fan；
One control unit；And
One fan chip, including an input pin and an output connecting pin, store an instruction catalogue, define a fan rotational pulse sample
Formula, one first special burst pattern and one second special burst pattern, the input pin connects described control unit, described defeated
Pin connects the fan out, and code of the first special burst pattern to represent one first form, described second is special
Code of the pulse pattern to represent a second form, described instruction table record an at least control instruction, and each control refers to
Order is respectively corresponding to a code character string；
Wherein, when the fan chip receives a pulse signal from described control unit and differentiates that the pulse signal has for one
When the pulse signal of the fan rotational pulse pattern, the wind is driven according to the pulse signal of the fan rotational pulse pattern
Fan is rotated；When the fan chip receives a series of pulse signal from described control unit and differentiates that described one connects
The pulse signal of string be all the pulse signal of the first special burst pattern, be all the second special burst pattern pulse
When signal or the pulse signal as combined by the first special burst pattern and the second special burst pattern, institute is differentiated
State the code character string representated by a series of pulse signal and according to the code character string determined from the finger
It enables and inquires the corresponding control instruction in table, and the fan chip is set at least with the control instruction inquired
One operating parameters or the control fan execute a corresponding operation.
2. fan control system according to claim 1, which is characterized in that the code of first form is " 0 ", and institute
The code for stating the second form is " 1 ".
3. fan control system according to claim 1, which is characterized in that the first special burst pattern and described the
Two special burst patterns are symmetrical pulse pattern.
4. fan control system according to claim 1, which is characterized in that the fan chip, which more defines, has a third special
Different pulse pattern, end code of the third special burst pattern to represent a control instruction, when the fan core
Piece from described control unit receive it is described include the pulse signal of at least one third special burst pattern when, will be appreciated that
The code character string, which has transmitted, belonging to the control instruction finishes.
5. fan control system according to claim 4, which is characterized in that the fan chip distinguishes institute using a firmware
The pulse for stating the pulse signal that control unit is transmitted is the fan rotational pulse pattern, the first special burst sample
Formula, the second special burst pattern or the third special burst pattern.
6. fan control system according to claim 4, which is characterized in that it is electric that the fan chip has further included a comparison
The pulse on road, the pulse signal that the fan chip is transmitted using comparison circuit discrimination described control unit is institute
State fan rotational pulse pattern, the first special burst pattern, the second special burst pattern or the special arteries and veins of the third
Rush pattern.
7. a kind of control method for fan is applied in a fan control system, which is characterized in that the fan control system packet
A fan, a control unit and a fan chip are included, the fan chip includes an instruction catalogue, the step of the control method for fan
Suddenly include:
A fan rotational pulse pattern, one first special burst pattern and one second special burst pattern are defined to the fan core
In piece, wherein code of the first special burst pattern to represent one first form, the second special burst pattern is used
To represent the code of a second form；
An at least control instruction is recorded into described instruction table, wherein each control instruction is respectively corresponding to a code character
String；
When the fan chip receives a pulse signal from described control unit and differentiates the pulse signal for fan rotation
The fan is driven to be rotated when the pulse signal of pulse pattern；
When the fan chip receives a series of pulse signal from described control unit and differentiates a series of arteries and veins
Rush pulse signal that signal is all the first special burst pattern, be all the second special burst pattern pulse signal or
Differentiate that described one connects when being the pulse signal as combined by the first special burst pattern and the second special burst pattern
The code character string representated by the pulse signal of string；
The corresponding control instruction is inquired from described instruction table according to the code character string determined；And
An at least operating parameters for the fan chip are set with the control instruction inquired or the control fan executes
One corresponding operation.
8. control method for fan according to claim 7, which is characterized in that the code of first form is " 0 ", and institute
The code for stating the second form is " 1 ".
9. control method for fan according to claim 7, which is characterized in that further include the following steps:
Definition has a third special burst pattern into the fan chip, wherein described in third special burst pattern representative
One end code of code character string；And
It include at least one third special burst pattern when the fan chip receives described from described control unit
It will be appreciated that belonging to the control instruction that the code character string has transmitted when pulse signal to finish.
10. control method for fan according to claim 9, which is characterized in that the fan chip utilizes a firmware or one
Comparison circuit distinguish the pulse of the pulse signal that described control unit is transmitted be the fan rotational pulse pattern, it is described
First special burst pattern, the second special burst pattern or the third special burst pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810040533.0A CN110043496B (en) | 2018-01-16 | 2018-01-16 | Fan control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810040533.0A CN110043496B (en) | 2018-01-16 | 2018-01-16 | Fan control system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110043496A true CN110043496A (en) | 2019-07-23 |
| CN110043496B CN110043496B (en) | 2020-08-21 |
Family
ID=67272936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810040533.0A Active CN110043496B (en) | 2018-01-16 | 2018-01-16 | Fan control system and method |
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| Country | Link |
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| CN (1) | CN110043496B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188783A (en) * | 2020-01-15 | 2020-05-22 | 上海禾土机电科技有限公司 | Industrial fan controller and control method thereof |
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| CN101443718A (en) * | 2004-12-23 | 2009-05-27 | 美蓓亚株式会社 | Microcontroller methods of improving reliability in DC brushless motors and cooling fans |
| TW201207603A (en) * | 2010-08-12 | 2012-02-16 | Hon Hai Prec Ind Co Ltd | Fan rotating speed control system |
| CN102654131A (en) * | 2011-03-04 | 2012-09-05 | 鸿富锦精密工业（深圳）有限公司 | Fan rotation speed controlling device |
| US20160308482A1 (en) * | 2013-12-04 | 2016-10-20 | Robert Bosch Gmbh | Electric motor comprising a device for generating a sequence of signals |
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- 2018-01-16 CN CN201810040533.0A patent/CN110043496B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581671A (en) * | 2003-08-07 | 2005-02-16 | 奇鋐科技股份有限公司 | Radiating fan pulse width modulating-conversion control system |
| CN101443718A (en) * | 2004-12-23 | 2009-05-27 | 美蓓亚株式会社 | Microcontroller methods of improving reliability in DC brushless motors and cooling fans |
| TW201207603A (en) * | 2010-08-12 | 2012-02-16 | Hon Hai Prec Ind Co Ltd | Fan rotating speed control system |
| CN102654131A (en) * | 2011-03-04 | 2012-09-05 | 鸿富锦精密工业（深圳）有限公司 | Fan rotation speed controlling device |
| US20160308482A1 (en) * | 2013-12-04 | 2016-10-20 | Robert Bosch Gmbh | Electric motor comprising a device for generating a sequence of signals |
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| CN111188783A (en) * | 2020-01-15 | 2020-05-22 | 上海禾土机电科技有限公司 | Industrial fan controller and control method thereof |
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| CN110043496B (en) | 2020-08-21 |
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