CN206801917U - Fan control device - Google Patents
Fan control device Download PDFInfo
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- CN206801917U CN206801917U CN201720534236.2U CN201720534236U CN206801917U CN 206801917 U CN206801917 U CN 206801917U CN 201720534236 U CN201720534236 U CN 201720534236U CN 206801917 U CN206801917 U CN 206801917U
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- fan
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Abstract
A kind of fan control device for controlling fan running, including：Power port, control unit, driver element, multiple fans and trigger switch.Wherein, the pulse wave width modulation signal of control unit reception processing device output, and control unit judges whether the dutycycle of pulse wave width modulation signal is more than an at least threshold values for control unit setting；When the dutycycle of pulse wave width modulation signal is more than an at least threshold values, control unit controls multiple fan runnings by driver element.
Description
Technical field
The utility model is espespecially a kind of defeated according to processor on mainboard about a kind of fan control device and its operating method
The fan control device and its operating method of the pulse wave width modulation signal control fan running gone out.
Background technology
With scientific and technological constantly progressive, integrated circuit (Integrated Circuit；IC volume) diminishes and its instruction week
Phase speeds.Therefore, when the IC element instruction cycles are faster, it will cause IC element heating situations more serious.
And among computer cabinet, main pyrotoxin comes from central processing unit (CPU).Therefore, big multicomputer machine
Case can all install radiator fan to reduce the temperature in cabinet.As long as such a usual computer one of design is started shooting, radiator fan
It will start running.And no matter whether computer is in work or holding state, radiator fan can all be operated with maximum (top) speed, directly
To just stopping during computer shutdown.But computer, when underloading or holding state, heat caused by central processing unit (CPU) is not
It is high and need not be by radiator fan so that maximum (top) speed operates and radiates；Therefore the waste of radiator fan power supply can be caused.Furthermore radiate
During fan continuous running, radiator fan can continue to produce the noise of operating.
Right existing fan control device does not all have the control for radiator fan when computer is in underloading or holding state
Design, come reduce the waste of radiator fan power supply and reduce operating when noise.Therefore how to design a kind of according to mainboard
The fan control device and its operating method of the pulse wave width modulation signal control fan running of upper processor output, are for this case
Utility model people is intended to the big problem that row overcomes and solved.
Utility model content
In order to solve the above problems, the utility model provides a kind of fan control device, to overcome problem of the prior art.
Therefore, the utility model fan control device includes：Power port, for receiving main power source and accessory power supply.Control unit, even
Connect between the processor on power port and mainboard.Driver element, connect control unit.Wherein, control unit reception processing device
The pulse wave width modulation signal of output；And control unit judges whether the dutycycle of pulse wave width modulation signal is more than control unit
An at least threshold values for setting；When the dutycycle of pulse wave width modulation signal is more than an at least threshold values, control unit passes through driving
Unit controls multiple fan runnings.
In first embodiment, wherein fan control device further includes：Trigger switch, connect control unit.Wherein, at least
The quantity of one threshold values is one, and threshold values changes according to the number of trigger switch triggering；When accounting for for pulse wave width modulation signal
When sky is than being more than threshold values, control unit exports the first control signal to driver element, to control driver element to drive all wind
Fan operating.
In first embodiment, wherein fan control device further includes：Integral unit, connection processor and control unit it
Between.Wherein, pulse wave width modulation signal integration is voltage signal by integral unit, and control unit is according to trigger switch triggering
Number judges whether the dutycycle corresponding to voltage signal is more than threshold values and decides whether to drive those fan runnings.
In second embodiment, wherein fan control device further includes：Trigger switch, connect control unit.Wherein, at least
The quantity of one threshold values is multiple, and fan control device adjusts size or the increasing of those threshold values according to the number of trigger switch triggering
Add the quantity of those threshold values；It is more than at least one in those threshold values when the dutycycle of pulse wave width modulation signal becomes larger
During threshold values, control unit exports the first control signal to driver element, with control driver element driving institute it is increased number of those
Fan running.
In second embodiment, wherein fan control device further includes：Integral unit, connection processor and control unit it
Between.Wherein, pulse wave width modulation signal integration is voltage signal by integral unit, and control unit is according to trigger switch triggering
Number judges whether the dutycycle corresponding to voltage signal is more than at least one threshold values in those threshold values and determines those fans
The quantity of operating.
In an embodiment, wherein fan control device further includes display unit group, to show trigger switch triggering
Number.
In an embodiment, wherein integral unit includes：First resistor, connect processor.Second resistance, the electricity of connection first
Between resistance and control unit.First electric capacity, between connection first resistor, second resistance and earth point.Wherein, when integral unit connects
When receiving pulse wave width modulation signal, pulse wave width modulation signal is charged to the first electric capacity to be converted to voltage signal.
In an embodiment, wherein fan control device further includes：Delay cell, connection power port, control unit and
Between those fans.Wherein, powered off when control unit detects to power by the main power source of power port supplied to those fans
When, control unit the second control signal of output to delay cell, accessory power supply is supplied to those fans by delay cell,
And make those fan continuous runnings；And after time delay, control unit stopping the second control signal of output to delay cell,
To control those fans to shut down.
In an embodiment, wherein fan control device further includes boosting unit, connection power port and delay cell it
Between, to be boosted to accessory power supply.
In an embodiment, wherein delay cell includes：First switch, connect between control unit and earth point.Second
Switch, between connection first switch, power port and those fans.Wherein, when control unit exports the second control signal to prolonging
During slow unit, first switch is turned on and a control terminal of second switch is grounded and is turned on, and accessory power supply is exported to those
Fan.
In an embodiment, wherein after the dutycycle of pulse wave width modulation signal is more than an at least threshold values, control unit
Gradually risen according to dutycycle and control those fans gradually to increase rotating speed.
In order to solve the above problems, the utility model provides a kind of operating method of fan control device, existing to overcome
The problem of technology.Therefore, between the processor on the utility model fan control device connection mainboard and multiple fans, and operate
Method includes：(a) the pulse wave width modulation signal of fan control device reception processing device output.(b) fan control device is triggered
Trigger switch.(c) number according to trigger switch triggering determines an at least threshold values, and judges accounting for for pulse wave width modulation signal
Whether sky than is more than an at least threshold values.(d) if the dutycycle of pulse wave width modulation signal is more than an at least threshold values, those are driven
Fan running.
In an embodiment, wherein step (d) further includes：(d1) at least the quantity of a threshold values is one, and threshold values foundation
Trigger switch triggering number and change；When the dutycycle of pulse wave width modulation signal is more than threshold values, all fans are driven
Operating.
In an embodiment, wherein step (d) further includes：(d2) at least quantity of a threshold values is multiple, and fan control
Device adjusts the size of those threshold values or increases the quantity of those threshold values according to the number of trigger switch triggering；When pulse bandwidth is adjusted
During at least one threshold values that the dutycycle of varying signal becomes larger and is more than in those threshold values, increase the number of those fan runnings
Amount.
In an embodiment, wherein operating method further includes：(e) when detect supplied to those fans main power source power
During power-off, accessory power supply is supplied to those fans by fan control device, and makes those fan continuous runnings；And during by delay
Between after, be supplied to those fans accessory power supply power supply power-off, to control those fans to shut down.
, please in order to be further understood that the utility model is to reach technology, means and effect that predetermined purpose taken
Refering to below in connection with detailed description of the present utility model and accompanying drawing, it is believed that the purpose of this utility model, feature and feature, when can be by
This obtains one deeply and specific understanding, but institute's accompanying drawings are only provided and used with reference to explanation, are not used for adding the utility model
With limiter.
Brief description of the drawings
Fig. 1 is the circuit box schematic diagram of the utility model fan control device；
Fig. 2A is the control oscillogram of the utility model fan control device first embodiment；
Fig. 2 B are the control oscillogram of the utility model fan control device second embodiment；
Fig. 2 C are the control oscillogram of the utility model fan control device 3rd embodiment；
Fig. 2 D are the control oscillogram of the utility model fan control device fourth embodiment；
Fig. 3 is the circuit diagram that the utility model fan control device includes integral unit；
Fig. 4 is the circuit diagram that the utility model fan control device includes delay cell and boosting unit；
Fig. 5 is the circuit diagram that the utility model fan control device includes protection location；
Fig. 6 is the flow chart of the operating method of the utility model fan control device.
Wherein reference is：
100 ... fan control devices
20 ... power ports
24 ... control units
26 ... driver elements
28 ... fan groups
28A-28D ... fans
30 ... trigger switch
32 ... display unit groups
32A-32C ... display units
34 ... integral units
R1 ... first resistors
R2 ... second resistances
The electric capacity of C1 ... first
36 ... delay cells
Q1 ... first switches
Q2 ... second switches
38 ... boosting units
40 ... protection locations
Q3 ... the 3rd is switched
Q4 ... the 4th is switched
200 ... mainboards
220 ... processors
Pm ... main power sources
Ps ... accessory power supplys
PWM ... pulse wave width modulation signals
The control signals of Sc1 ... first
The control signals of Sc2 ... second
The control signals of Sc3 ... the 3rd
Sd ... drive signals
Vs ... voltage signals
T ... time delays
D ... dutycycles
Vt, Vt1~Vtn ... threshold values
Sl ... the slow-speed of revolution
The middle rotating speeds of Sm ...
Smax ... maximum (top) speeds
(S200)-(S280) ... step
Embodiment
Hereby about the technical content and a detailed description of the present utility model, schema is coordinated to be described as follows：
Refer to the circuit box schematic diagram that Fig. 1 is the utility model fan control device.Fan control device 100 includes
Power port 20, control unit 24 and driver element 26, to control fan group 28.Power port 20 connects external power source (figure
Do not show), and the main power source Pm and accessory power supply Ps of external power source are received, and using main power source Pm and accessory power supply Ps as fan control
Device 100 processed operates required electric power.Between control unit 24 connects the processor 220 on power port 20 and mainboard 200, and
Main power source Pm and accessory power supply Ps, and the pulse wave width modulation signal that reception processing device 220 exports are received by power port 20
PWM.Fan group 28 includes multiple fans (28A-28D), and those fans (28A-28D) connection power port 20, and passes through electricity
Source port 20 receives main power source Pm or accessory power supply Ps, and the present embodiment is exemplified by receiving main power source Pm, to provide those fans
Electric power needed for (28A-28D) operating.When control unit 24 receives the pulse wave width modulation signal PWM of the output of processor 220
When, control unit 24 calculates pulse wave width modulation signal PWM dutycycle D, and according to pulse wave width modulation signal PWM duty
Produced than D and export the first control signal Sc1 to driver element 26.Driver element 26 connects control unit 24 and those fans
Between (28A-28D), and the first control signal Sc1 that reception control unit 24 is exported, and produced according to the first control signal Sc1
Raw and output drive signal Sd is to those fans (28A-28D), to control those fans (28A-28D) to operate.
It is worth mentioning, in the present embodiment, main power source Pm is 12V and accessory power supply Ps is 5V, but is not limited.Change speech
It, as long as being available for the main power source Pm or accessory power supply Ps of the normal operation of fan control device 100, should all be included in the present embodiment
Among category.In addition, in the present embodiment, fan control device 100 is mainly the fan control dress applied to computer equipment
100 are put, but is not limited.In other words, as long as pulse wave width modulation signal PWM duty can be adjusted according to the height of temperature
Processor 220 than D, it can all apply fan control device 100 of the present utility model.Furthermore in the present embodiment, driver element
26 be the in-phase amplifier with signal delay and enlarging function, but is not limited.In other words, as long as exportable drive signal
Sd and the driver element 26 of those fans (28A-28D) is driven (such as, but not limited to for inverting amplifier, or by entity circuit
Pocket into rather than use amplifier IC) all should be included in the present embodiment category among.
Fig. 1 is referred to again, and fan control device 100 further includes trigger switch 30 and display unit group 32, and trigger switch 30 connects
Control unit 24 is connect, and control unit 24 adjusts those fans (28A-28D) in arteries and veins according to the number that trigger switch 30 triggers
Wave width modulating signal PWM dutycycle D is more than the operating of how many when.The connection control unit 24 of display unit group 32, and comprising
Multiple display units (32A-32C), and show the number that trigger switch 30 triggers.Because control unit 24 can be according to trigger switch
30 triggering numbers and adjust those fans (28A-28D) in pulse wave width modulation signal PWM dutycycle D be more than how many when this
Operating, therefore the number triggered by the display trigger switch 30 of display unit group 32, current trigger switch is recognized with sharp user
30 trigger several times.In the present embodiment, trigger switch 30 is recyclable triggering.Exceed control when user triggers trigger switch 30
During maximum triggering times set by unit 24, can involution return non-triggering state or first time triggering state after be further continued for triggering.
Such as, but not limited to, the quantity of display unit (32A-32C) is three, when trigger switch 30 triggers twice, display unit
32A-32B is shinny.Again when trigger switch 30 triggers the 5th time, first time triggering state is returned in meeting involution, and display unit 32A is sent out
It is bright.Wherein, the 4th triggering passed through, the state for being all extinguishing for display unit (32A-32C).
It is worth mentioning, in the present embodiment, does not limit display unit (32A-32C) quantity, as long as it is single to be more than control
Maximum triggering times set by member 24.In addition, in the present embodiment, display unit (32A-32C) is LED, but not
As limit.In other words, if be available for user with vision learn trigger switch 30 trigger number display unit, should all include
Among the category of the present embodiment.Furthermore in the present embodiment, trigger switch 30 be available for users to repeatedly pressing triggering by
Button switch, but be not limited.In other words, as long as the switch for being available for users to pressing triggering (is pushed aside such as, but not limited to refer to
Close, or be inductive switch), it should all be included among the category of the present embodiment.And in the present embodiment, also can be according to time of triggering
Count to correspond to multiple switch.Can trigger four times such as, but not limited to fan control device 100, and corresponding four switches and sequentially
Triggering.
Fig. 1 is referred to again, and in the utility model, fan control device 100 has what two kinds of control fans (28A-28D) operated
Mode.One of them is when control unit 24 detects that pulse wave width modulation signal PWM dutycycle D is more than in control unit 24
During one threshold values Vt of portion's setting, all fans (28A-28D) are controlled to operate.Another is that control unit 24 controls those wind
Fan (28A-28D) is increasingly greater than set as pulse wave width modulation signal PWM dutycycle D is increasing inside control unit 24
During fixed multiple threshold values (Vt1~Vtn), control unit 24 gradually increases the quantity of those fans (28A-28D) operating.Match somebody with somebody below
Fig. 2A, 2B control oscillogram are closed, will be illustrated further.Be worth mentioning, in the present embodiment, driver element 26 connect and
Fan (28A-28D) quantity of driving is four, but only schematical quantity.Therefore, as long as fan control device 100 is controllable
The number of fans made and driven, it should all be included among the category of the present embodiment.In addition, in the present embodiment, wind is not also limited
The species of (28A-28D) is fanned, as long as the fan kind for being available for fan control device 100 to control and driving, equally should be also included in
Among the category of the present embodiment.
The control oscillogram that Fig. 2A is the utility model fan control device first embodiment is referred to, compounding is closed refering to figure
1.In the present embodiment, when control unit 24 detects that pulse wave width modulation signal PWM dutycycle D is more than a threshold values Vt,
All fans (28A-28D) are controlled to operate, and Initial Hurdle Vt is set as 20%.When control unit 24 detects pulse bandwidth
During modulating signal PWM, control unit 24 calculates pulse wave width modulation signal PWM dutycycle D.And when control unit 24 calculates arteries and veins
For wave width modulating signal PWM dutycycle D when less than 20%, control unit 24 does not export the first control signal Sc1, with control
Those fans (28A-28D) shut down, and then make processor 220 when underloading, reduce those fan (28A-28D) electric power
Noise when consumption and reduction fan running.And when processor 220 temperature gradually uprise and cause dutycycle D gradually rise to
During more than 20%, control unit 24 controls all fans (28A-28D) to operate, and with sharp processor 220 when the middle load above, carries
Rise the efficiency of radiating.
Heavy line such as Fig. 2A is illustrated, and Initial Hurdle Vt is set as 20%, and trigger switch 30 is not triggered, that is, shows
When unit (32A-32C) is all extinguishing, when dutycycle D is more than 20%, all fans (28A-28D) operate.Similarly, trigger
Switch 30 is triggered once, i.e., when only display unit 32A is shinny, when dutycycle D is more than 25%, and all fans (28A-28D)
Operating.The rest may be inferred, and trigger switch 30 is triggered three times, i.e., when display unit (32A-32C) is all shinny, when dutycycle D is more than
60%, all fans (28A-28D) operating.Further, trigger switch 30 is triggered four times, i.e. display unit (32A-
32C) when being all extinguishing, when dutycycle D is more than 20%, all fans (28A-28D) operating.Therefore, circulation is returned to triggering
The state that switch 30 is not triggered.Similarly, trigger switch 30 is triggered five times, then circulation is returned to trigger switch 30 and is triggered one
Secondary state, the like, it will not be repeated here.So, not using described above as limitation.That is, it is triggered in trigger switch 30
At four times, it also may be set to circulation and be returned to the state that trigger switch 30 is triggered once, i.e., omission circulation, which is returned to, does not trigger
State.
Fig. 2A is referred to again, and is coordinated and referred to Fig. 1.When user triggers trigger switch 30, control unit 24 changes threshold values Vt
Size.By taking the present embodiment as an example, but it is not limited to trigger switch 30 and can trigger three times, and corresponds to different threshold values Vt (examples respectively
Such as, but be not limited to 25%, 40%, 60%).When user's triggering trigger switch 30, and control unit 24 calculates pulse wave twice
Width modulation signal PWM dutycycle D controls those fans (28A-28D) to shut down when less than 40%.And when control is single
When the dutycycle D that member 24 calculates pulse wave width modulation signal PWM is more than 40%, control unit 24 controls all fan (28A-
28D) operate.Now, the display unit 32A-32B of display unit group 32 is shinny, learns that trigger switch 30 is touched with convenient use person
Send out twice.And threshold values Vt be 25% (triggering a trigger switch 30) and threshold values Vt is 60% (to trigger to trigger three times and open
30) pass is similarly above-mentioned judgement and control method, be not repeated here herein.It is worth mentioning, in the present embodiment, and it is unlimited
Determine threshold values Vt only to can trigger three times.In other words, fan control device 100 can set the valve of at least more than one according to user's request
Value Vt, and correspond to trigger switch 30 and trigger.
The control oscillogram that Fig. 2 B are the utility model fan control device second embodiment is referred to, compounding is closed refering to figure
1-2A.The present embodiment and Fig. 2A first embodiment difference are that fan (28A-28D) rotating speed can gradually rise according to dutycycle D
It is high and increase.In the present embodiment, control unit 24 can not only detect pulse wave width modulation signal PWM dutycycle D
During more than a threshold values Vt, all fans (28A-28D) are controlled to be operated with maximum (top) speed Smax, and when dutycycle D is more than valve
During value Vt, control unit 24 can also gradually rise according to dutycycle D and control those fans (28A-28D) gradually to increase rotating speed,
More to save the consumption of those fan (28A-28D) electric power.Such as, but not limited to, a trigger switch 30 is triggered with user
Exemplified by, as Fig. 2 B heavy line is illustrated, when dutycycle D is less than or equal to 25%, those fans (28A-28D) are inoperative.
When dutycycle D is more than 25%, control unit 24 controls those fans (28A-28D) to be operated with slow-speed of revolution Sl, and with dutycycle D
Become larger and those fans (28A-28D) are gradually pulled to middle rotating speed Sm by slow-speed of revolution Sl and operated；When dutycycle D is more than 40%
When, control unit 24 controls those fans (28A-28D) to be operated with middle rotating speed Sm, and becomes larger with dutycycle D and gradually will
Those fans (28A-28D) are pulled to maximum (top) speed Smax operatings by middle rotating speed Sm；And when dutycycle D is more than 60%, control is single
Member 24 controls those fans (28A-28D) to be operated with maximum (top) speed Smax.
Similarly, by taking user's triggering twice trigger switch 30 as an example, when dutycycle D is less than or equal to 40%, those wind
It is inoperative to fan (28A-28D).When dutycycle D is more than 40%, control unit 24 controls those fans (28A-28D) with middle rotating speed
Sm is operated, and is become larger with dutycycle D and those fans (28A-28D) gradually are pulled into maximum (top) speed Smax by middle rotating speed Sm
Operating；And when dutycycle D is more than 60%, control unit 24 controls those fans (28A-28D) to be operated with maximum (top) speed Smax.
Similarly, by taking user's triggering three times trigger switch 30 as an example, when dutycycle D is less than or equal to 60%, those fans (28A-
It is 28D) inoperative.When dutycycle D is more than 60%, control unit 24 controls those fans (28A-28D) with maximum (top) speed Smax
Operating.
The control oscillogram that Fig. 2 C are the utility model fan control device 3rd embodiment is referred to, compounding is closed refering to figure
1-2B.In the present embodiment, control unit 24 controls those fan (28A-28D) accounting for pulse wave width modulation signal PWM
During sky multiple threshold values (Vt1~Vtn) more increasing than D and the increasingly greater than inner setting of control unit 24, control unit 24 by
The quantity of cumulative plus those fans (28A-28D) operating.The inner setting of control unit 24 has multiple threshold values (Vt1~Vt2), example
Such as, but to be not limited to threshold values Vt1 reference dutycycle be 10%, 20%) threshold values Vt2 reference dutycycle is.For example, according to
Threshold values Vt1 (such as Fig. 2 C indicated 10%, 15% and 30%) drive control fan (28A-28B)；According to threshold values Vt2
(such as Fig. 2 C indicated 20%, 25% and 40%) drive control fan (28A-28D).In other words, such as, but not limited to,
When user does not trigger trigger switch 30, i.e., original state when, control unit 24 set threshold values Vt1 reference dutycycle as
10% and threshold values Vt2 reference dutycycle is 20%.When user triggers a trigger switch 30, control unit 24 adjusts valve
Value Vt1 reference dutycycle is 15% and threshold values Vt2 reference dutycycle is 25%.Similarly, when user's triggering triggers twice
When switching 30, the reference dutycycle that control unit 24 adjusts threshold values Vt1 is 30% and threshold values Vt2 reference dutycycle is 40%.
Heavy line such as Fig. 2 C is illustrated, i.e., is illustrated so that user does not trigger trigger switch 30 as an example.When control is single
When member 24 detects pulse wave width modulation signal PWM, control unit 24 calculates pulse wave width modulation signal PWM dutycycle D.And
When control unit 24 calculates pulse wave width modulation signal PWM dutycycle D in 10% (i.e. threshold values Vt1 reference dutycycle) below
When, control unit 24 does not export the first control signal Sc1, controls all fans (28A-28D) to shut down with control unit 24.
When dutycycle D is when 10% to 20% (i.e. threshold values Vt2 reference dutycycle), control unit 24 controls fan (28A-28B) fortune
Turn, and fan (28C-28D) shuts down；When dutycycle D is in more than 20% when, then control unit 24 controls all fans
(28A-28D) is operated.Gradually risen using dutycycle D and gradually increase the quantity of fan (28A-28D) operating, can be more effective
Noise when saving the consumption of those fan (28A-28D) electric power and reducing fan running.
Fig. 2 C are referred to again, and are coordinated and referred to Fig. 1-2 B.When user triggers trigger switch 30, control unit 24 is according to triggering
Switch the number of 30 triggerings and adjust the size of those threshold values (Vt1~Vt2) or increase the quantity of those threshold values (Vt1~Vt2).
If control unit 24 adjusts the size of those threshold values (Vt1~Vt2) according to the number that trigger switch 30 triggers, one is often triggered
Secondary trigger switch 30 can change the size of those threshold values (Vt1~Vt2).Such as, but not limited to trigger switch 30 can trigger twice,
And correspond to respectively those threshold values (Vt1-Vt2 is duty ratio corresponding 15%, 25% when being triggered such as, but not limited to first time, second
It is duty ratio corresponding 30%, 40%) during secondary triggering.When user triggers trigger switch 30 twice, now, display unit group 32
Display unit 32A-32B is shinny, learns that trigger switch 30 triggers twice with convenient use person.When control unit 24 calculates pulse wave
Width modulation signal PWM dutycycle D in 30% (i.e. threshold values Vt1 reference dutycycle) below when, control unit 24 does not export
First control signal Sc1, all fans (28A-28D) are controlled to shut down with control unit 24.When dutycycle D in 30% to
When 40% (i.e. threshold values Vt2 reference dutycycle), control unit 24 controls fan (28A-28B) operating, and fan (28C-28D)
Shut down.When dutycycle D is in more than 40% when, then control unit 24 controls all fans (28A-28D) to operate.It is worth one
Carry, in the present embodiment, also do not limit threshold values (Vt1~Vtn) and only can trigger twice.In other words, fan control device 100 is same
The threshold values (Vt1~Vtn) of at least more than one can be set according to user's demand, and correspond to trigger switch 30 and trigger.
The control oscillogram that Fig. 2 D are the utility model fan control device fourth embodiment is referred to, compounding is closed refering to figure
1-2C.The 3rd embodiment difference of the present embodiment and Fig. 2 C is, control unit 24 according to the number that trigger switch 30 triggers and
Adjust the quantity of those threshold values (Vt1~Vt2).In the present embodiment, those threshold values can be changed by often triggering a trigger switch 30
The quantity of (Vt1~Vt2).When user does not trigger trigger switch 30, dutycycle corresponding to default threshold values (Vt1~Vtn) is
10%th, 20%.Such as, but not limited to trigger switch 30 can trigger twice, when pressed once, increase threshold values Vt3；And when pressing
When secondary, increase threshold values Vt4 (Vt1-Vt4 is duty ratio corresponding 10%, 20%, 30%, 40%).
Heavy line such as Fig. 2 D is illustrated, i.e., is illustrated so that user presses a trigger switch 30 as an example.Work as triggering
Share three threshold values (Vt1~Vt3) during the pressing of switch 30 one time, duty ratio corresponding 10%, 20%, 30%), now, display is single
The display unit 32A of tuple 32 is shinny, learns that trigger switch 30 has pressed once with convenient use person.When dutycycle D is in 10%
When following, control unit 24 does not export the first control signal Sc1, controls all fans (28A-28D) to stop with control unit 24
Operating.When dutycycle D is when between 10% to 20%, fan (28A-28B) operates, and fan (28C-28D) shuts down；When
Dutycycle D is when between 20% to 30%, fan (28A-28C) operating, and fan 28D shuts down；When dutycycle D is more than
When 30%, fan (28A-28D) all operates.
In addition, it is illustrated so that user's pressing does not press trigger switch 30 as an example.It is total to when trigger switch 30 does not press
There are two threshold values (Vt1~Vt2), duty ratio corresponding 10%, 20%), when dutycycle D is in less than 10% when, control unit 24 is not
The first control signal Sc1 is exported, controls all fans (28A-28D) to shut down with control unit 24.When dutycycle D is in 10%
When between to 20%, fan (28A-28B) operating, and fan (28C-28D) shuts down；When dutycycle D is more than 20%, wind
Fan (28A-28D) all operates.
Similarly, it is illustrated by taking user's pressing twice trigger switch 30 as an example.It is total to when trigger switch 30 presses twice
Have four threshold values (Vt1~Vt4), duty ratio corresponding 10%, 20%, 30%, 40%), now, the display list of display unit group 32
First 32A-32B is shinny, learns that trigger switch 30 has pressed twice with convenient use person.When dutycycle D is in less than 10% when, own
Fan (28A-28D) shuts down.When dutycycle D is when between 10% to 30%, fan (28A-28B) operates, and fan
(28C-28D) shuts down；When dutycycle D is when between 30% to 40%, control unit 24 controls fan (28A-28C) fortune
Turn, and fan 28D shuts down；When dutycycle D is more than 40%, fan (28A-28D) all operates.It is worth mentioning, Fig. 2 C-2D
Threshold values (Vt1~Vtn) setting of embodiment all can set interactive application with Fig. 2A -2B threshold values Vt, so that fan control device
The operating of 100 more elastic configuration fans (28A-28B).
Still further, Fig. 2 C-2D embodiment also can be such as Fig. 2 B second embodiment, and control unit 24 also can be according to
Gradually risen according to dutycycle D and control those fans (28A-28D) gradually increase rotating speed (not shown), more to save those wind
Fan the consumption of (28A-28D) electric power.Such as, but not limited to, those threshold values (Vt1~Vt2) duty ratio correspondings 10%, 20% and, when
For dutycycle D when between 10% to 20%, control unit 24 controls those fans (28A-28B) to be operated with slow-speed of revolution Sl, and according to
Dutycycle D gradually rises and those fans (28A-28B) gradually is pulled into middle rotating speed Sm by slow-speed of revolution Sl and operated；As dutycycle D
During more than 20%, control unit 24 controls those fans (28A-28D) to be maintained at middle rotating speed Sm and operated above.In addition, in Fig. 2A-
In 2D embodiment, above-mentioned triggering mode can also increase one group of fan (28A-28D) newly and be operated according to pulse wave width modulation signal PWM
Triggering.When being triggered to the triggering that fan (28A-28D) operates with pulse wave width modulation signal PWM, control unit 24 is not
Any threshold values (Vt1~Vtn) is set, now the rotating speed of fan (28A-28D) will be directly with pulse wave width modulation signal PWM
Dutycycle D change.
It is the circuit diagram that the utility model fan control device includes integral unit to refer to Fig. 3, and compounding is closed and refers to Fig. 1.
Fan control device 100 further includes integral unit 34, and integral unit 34 is connected between processor 220 and control unit 24.Integration
Pulse wave width modulation signal PWM integrations are voltage signal Vs by unit 34, then output voltage signal Vs is to control unit 24.Control
Unit 24 judges pulse wave width modulation signal PWM dutycycle D sizes according to voltage signal Vs (between 0~1).Tool
For body, due to can apply it is not of the same race to control IC be control unit 24, and every kind of control IC detection pulse wave width modulation signals PWM
Dutycycle D mode it is different.Therefore when the built-in dutycycle computing unit (not shown) of control IC, fan control device
100 need not set integral unit 34.If but when controlling IC without built-in dutycycle computing unit (not shown), fan control device
100 must add integral unit 34 between processor 220 and control unit 24, so that control unit 24 is sentenced according to voltage signal Vs
Disconnected pulse wave width modulation signal PWM dutycycle D.When control unit 24 judges pulse wave width modulation signal according to voltage signal Vs
After PWM dutycycle D sizes, the number according to the triggering of trigger switch 30, and coordinate voltage signal Vs institutes again of control unit 24
Corresponding dutycycle D is judged whether it is more than the threshold values (Vt1~Vtn) corresponding to triggering times, to judge and control this
Kenel, the quantity whether a little fans (28A-28D) operate or operate.Be worth mentioning, in the present embodiment, in processor 220 with
The voltage signal Vs that integral unit 34 is intended to try to achieve pulse wave width modulation signal PWM is added between control unit 24, so that control
Unit 24 tries to achieve pulse wave width modulation signal PWM dutycycle D according to voltage signal Vs.Therefore, in the present embodiment, and it is unlimited
Surely above-mentioned effect is reached with integral unit 34, pulse wave width modulation signal PWM voltage signal Vs can be tried to achieve such as, and make
Control unit 24 tries to achieve pulse wave width modulation signal PWM dutycycle D unit according to voltage signal Vs, should all be included in this reality
Apply among the category of example.
Fig. 3 is referred to again, and is coordinated and referred to Fig. 1.Integral unit 34 includes first resistor R1, second resistance R2 and the first electric capacity
C1.First resistor R1 one end connection processor 220, other end connection second resistance R2 one end, and second resistance R2's is another
One end connects control unit 24.Node between first electric capacity C1 one end connection first resistor R1 and second resistance R2, and the
One electric capacity C1 other end connection earth point.When integral unit 34 receives the pulse wave width modulation letter exported by processor 220
During number PWM, pulse wave width modulation signal PWM charges to the first electric capacity C1, and forms voltage signal Vs in the first electric capacity C1 both ends
Cross-pressure.The receiving voltage signal Vs of control unit 24, and according to voltage signal Vs calculating pulse wave width modulation signals PWM duty
Judge whether those fans (28A-28D) operate than D, and according to dutycycle D.It is worth mentioning, in the present embodiment, integral unit
34 are not limited and must be formed with above-mentioned first resistor R1, second resistance R2 and the first electric capacity C1.In other words, it is such as but unlimited
It can also be realized in, integral unit 34 by integrating circuit that operational amplifier (OPA) is formed.Therefore, it may achieve integration such as
Circuit, element or the IC of function, it should all be included among the present embodiment.
It is the circuit diagram that the utility model fan control device includes delay cell and boosting unit to refer to Fig. 4, is compounded
Conjunction refers to Fig. 1.Fan control device 100 further includes delay cell 36, and delay cell 36 connects power port 20, control unit 24
And between those fans (28A-28D), and delay cell 36 receives accessory power supply Ps by power port 20.When control unit 24
Detect that control unit 24 exports the second control signal supplied to during the main power source Pm power supply power-off of those fans (28A-28D)
Accessory power supply Ps is supplied to those fans (28A-28D) by Sc2 to delay cell 36 by delay cell 36.So that as master
During power supply Pm power supply power-off, those fans (28A-28D) just shut down after the sustainable operating a bit of time, and then make processing
When device 220 is down to underloading by middle load, those fans (28A-28D) can shed waste heat.Furthermore, fan control device
100 power to be powered down between those fans (28A-28D) shut down by main power source Pm has time delay T, works as control unit
24 detect main power source Pm power supply power-off, and after time delay T, just stop the second control signal Sc2 of output to the delay
Unit 36, to control those fans (28A-28D) to shut down.Be worth mentioning, in the present embodiment, time delay T for example but
The radiating effect for being not limited to 45 seconds is optimal, but is not limited.In other words, user can adjust delay according to radiating requirements
Time T.
Fig. 4 is referred to again, and is coordinated and referred to Fig. 1.Delay cell 36 includes first switch Q1 and second switch Q2.First switch
Q1 control terminal connection control unit 24, and output end connection earth point, input connection second switch Q2 input, control
End and power port 20, second switch Q2 output end connect those fans (28A-28D).When the control of the output of control unit 24 second
When signal Sc2 processed is to delay cell 36, first switch Q1 is turned on and second switch Q2 control terminal is grounded and is turned on.And when the
During two switch Q2 conductings, accessory power supply Ps is exported to those fans (28A-28D) by second switch Q2.To be supplied as main power source Pm
During electricity power-off, fan control device 100 controls accessory power supply Ps to be supplied to those fans (28A-28D), and makes those fans (28A-
28D) the continuous running a bit of time.When control unit 24 does not export the second control signal Sc2 to delay cell 36 (for example,
When fan (28A-28D) is powered or main power source Pm power-off by main power source Pm, and fan (28A-28D) continuous running a bit of time
Afterwards), first switch Q1 is not turned on and is not turned on second switch Q2.And when second switch Q2 is not turned on, accessory power supply Ps without
Method is exported to those fans (28A-28D) by second switch Q2.It is worth mentioning, in the present embodiment, delay cell 36 is not
Restriction must be formed with above-mentioned first switch Q1 with second switch Q2.In other words, such as, but not limited to, delay cell 36 also can be by
Other are realized with the circuit for turning on/being not turned on effect.Therefore, when may achieve main power source Pm power supply power-off such as, control is single
The control conducting of member 24 accessory power supply Ps supplies power to circuit, element or the IC of those fans (28A-28D), should all be included in this implementation
Among example.
Referring to Fig. 4, and coordinate refer to Fig. 1.Fan control device 100 further includes boosting unit 38, and boosting unit 38 connects
Connect between power port 20 and delay cell 36.Specifically, due to fan (28A-28D) huge number, and it is diversified in specifications,
If therefore (such as, but not limited to for 5V) during accessory power supply Ps magnitude of voltage deficiency, it will have the fan of part specification because of auxiliary
Power supply Ps magnitude of voltage is too low to drive.Therefore boosting unit need to be added between power port 20 and delay cell 36
38, after accessory power supply Ps magnitude of voltage boosted (such as, but not limited to for 8V), it can smoothly drive most fan
(28A-28D).It is worth mentioning, in the present embodiment, does not limit the species of boosting unit 38.In other words, it may achieve boosting such as
The boosting unit 38 of effect, it should all be included among the category of the present embodiment.
It is the circuit diagram that the utility model fan control device includes protection location to refer to Fig. 5, and compounding is closed and refers to Fig. 1.
Fan control device 100 further includes protection location 40, and protection location 40 connects power port 20, control unit 24 and those fans
Between (28A-28D), and protection location 40 receives main power source Pm by power port 20.When control unit 24 detects main power source
When Pm exceptions or failure, control unit 24 does not export the 3rd control signal Sc3 to protection location 40, with deenergization port 20 with
The annexation of those fans (28A-28D).Furthermore, protection location 40 includes the 3rd switch Q3 and the 4th switch Q4,
3rd switch Q3 control terminal connection control unit 24, and output end connection earth point, the switch Q4's of input connection the 4th is defeated
Enter end, control terminal and power port 20, the 4th switch Q4 output end connects those fans (28A-28D).When control unit 24
When detecting that main power source Pm is normal, control unit 24 exports the 3rd control signal Sc3 and makes the 3rd switch Q3 conductings, and passes through the
Three switch Q3 conducting and make the 4th switch Q4 control terminal ground connection and turn on.And when the 4th switch Q4 conductings, main power source Pm
Exported by the 4th switch Q4 to those fans (28A-28D).When control unit 24 detects main power source Pm exceptions or failure,
Control unit 24 does not export the 3rd control signal Sc3 and the 3rd switch Q3 is not turned on the 4th switch Q4.And when the 4th switch
When Q4 is not turned on, main power source Pm can not be exported to those fans (28A-28D) by the 4th switch Q4.It is worth mentioning, Yu Benshi
Apply in example, protection location 40 is intended to when control unit 24 detects main power source Pm exceptions or failure, disconnects main power source Pm with being somebody's turn to do
The annexation of a little fans (28A-28D).Therefore, protection location 40, which does not limit, to be switched with the above-mentioned 3rd switch Q3 and the 4th
Q4 is formed.In other words, such as, but not limited to, protection location 40 can also be had by other turn on/be not turned on the circuit of effect Lai
Realize.Therefore, when may achieve control unit 24 such as and detecting main power source Pm exceptions or failure, main power source Pm and those wind are disconnected
Circuit, element or the IC of the annexation of (28A-28D) are fanned, should be all included among the present embodiment.
The flow chart that Fig. 6 is the utility model fan control device operating method is referred to, compounding is closed and refers to Fig. 1-4.Wind
Fan between processor 220 and multiple fans (28A-28D) that control device 100 is connected on mainboard 200, and operating method includes：
First, the pulse wave width modulation signal PWM (S200) that reception processing device 220 exports.When control unit 24 receives processor 220
During the pulse wave width modulation signal PWM of output, control unit 24 calculates pulse wave width modulation signal PWM dutycycle D.Then,
Trigger the trigger switch 30 (S220) of fan control device 100.When user triggers trigger switch 30, fan control device
100 determine the size of an at least threshold values (Vt1~Vtn) inside control unit 24 according to the number that trigger switch 30 triggers.Then,
Judge whether dutycycle D is more than an at least threshold values (S240).Fan control device 100 judges pulse wave width modulation signal PWM's
Whether dutycycle D is more than an at least threshold values (Vt1~Vtn) for the inner setting of control unit 24, to decide whether to drive those wind
Fan (28A-28D).Then, if pulse wave width modulation signal PWM dutycycle D is more than an at least threshold values (Vt1~Vtn)
When, drive those fans (28A-28D) to operate (S260).Fan control device 100 accounts for according to pulse wave width modulation signal PWM's
It is empty to export the first control signal Sc1 to driver element 26 than D, and the output drive signal Sd of driver element 26 is to those fans
(28A-28D), to control those fans (28A-28D) to operate.If threshold values Vt quantity is one, and threshold values Vt is according to trigger switch
30 triggering numbers and change；And when control unit 24 detects that pulse wave width modulation signal PWM dutycycle D is more than threshold values Vt
When, control all fans (28A-28D) to operate.Threshold values if (Vt1~Vtn) quantity to be multiple, and fan control device 100 according to
The number triggered according to trigger switch 30 adjusts the size of those threshold values (Vt1~Vtn) or increases those threshold values (Vt1~Vtn)
Quantity；It is more than at least one in those threshold values (Vt1~Vtn) when pulse wave width modulation signal PWM dutycycle D is increasing
During individual threshold values, control unit 24 gradually increases the quantity of those fans (28A-28D) operating.Finally, when detecting main power source Pm
During power supply power-off, control accessory power supply Ps is supplied to those fans (28A-28D), and those fans (28A-28D) is persistently transported
Turn a time delay T (S280).When control unit 24 detects main power source Pm power supply power-off, the control of the output of control unit 24 second
Accessory power supply Ps is supplied to those fans (28A-28D) by signal Sc2 processed to delay cell 36 by delay cell 36.Make
During proper main power source Pm power supplies power-off, those fans (28A-28D) just shut down after the sustainable operating a bit of time.It is worth
One carries, and Fig. 1 body frame structure of fan control device 100 can the every kind of different control methods of application drawing 2A-2D and appended drawings 3-5
Unit, and mutually exclusive effect will not be produced.Therefore, user can voluntarily arrange in pairs or groups control method and additional according to use demand
Unit, those fans (28A-28D) are flexibly controlled to operate to reach.
In summary, one or more embodiments of the present utility model at least have the advantages of one of：
1st, due to fan control device can control multiple fans at dutycycle (underloading) below threshold values it is inoperative, therefore
During up to reduction fan running the effect of noise；
2nd, because fan control device can apply the control method of single threshold values or multiple threshold values, therefore up to flexible control
The effect of making multiple fans, and reducing the consumption of those fan powers；
3rd, when main power source, which is powered, to be powered off, fan also sustainable operating a period of time, therefore may achieve more effectively by more than
The effect of heat sheds.
Only, it is described above, the only detailed description of the utility model preferred embodiment and schema, only the utility model
Feature be not limited thereto, and be not used to limit the utility model, all scopes of the present utility model should be with following rights
It is required that being defined, the embodiment of all spirit changes similar with its together in the utility model claims, it should all be included in this practicality
It is any to be familiar with this those skilled in the art in field of the present utility model in new category, can think easily and change or modification all
The scope of the claims in following this case can be covered.
Claims (9)
1. a kind of fan control device, it is characterised in that the fan control device includes：
One power port, for receiving a main power source and an accessory power supply；
One control unit, connect between the processor on the power port and a mainboard；
One driver element, connect the control unit；
One trigger switch, connect the control unit；
Wherein, the control unit receives a pulse wave width modulation signal of processor output, and the control unit judges the arteries and veins
Whether the dutycycle of wave width modulating signal is more than an at least threshold values for control unit setting, and the threshold values is according to the trigger switch
The number of triggering and change；When the dutycycle of the pulse wave width modulation signal is more than an at least threshold values, the control unit is led to
Cross the driver element and control multiple fan runnings.
2. fan control device as claimed in claim 1, it is characterised in that the fan control device further includes：
The control unit sets multiple threshold values, and the fan control device adjusts those according to the number that the trigger switch triggers
The size of threshold values or the quantity for increasing those threshold values；When the dutycycle of the pulse wave width modulation signal becomes larger and it is more than those
During at least one threshold values in threshold values, the control unit exports one first control signal to the driver element, to control the driving
Those increased number of fan runnings of unit driving institute
3. fan control device as claimed in claim 2, it is characterised in that the fan control device further includes：
One integral unit, connect between the processor and the control unit；
The pulse wave width modulation signal integration is a voltage signal by the integral unit, and the control unit is according to the trigger switch
The number of triggering judges whether the dutycycle corresponding to the voltage signal is more than the threshold values and decides whether to drive those fans to transport
Turn.
4. fan control device as claimed in claim 2, it is characterised in that the fan control device further includes a display unit
Group, to show the number of trigger switch triggering.
5. fan control device as claimed in claim 3, it is characterised in that the integral unit includes：
One first resistor, connect the processor；
One second resistance, connect between the first resistor and the control unit；
One first electric capacity, connect between the first resistor, the second resistance and an earth point；
Wherein, when the integral unit receives the pulse wave width modulation signal, the pulse wave width modulation signal is to first electricity
Capacity charge is to be converted to the voltage signal.
6. fan control device as claimed in claim 1, it is characterised in that the fan control device further includes：
One delay cell, connect between the power port, the control unit and those fans；
Wherein, when the control unit, which detects, to be powered off by the main power source power supply of the power port supplied to those fans,
The control unit exports one second control signal to the delay cell, and the accessory power supply is supplied to by the delay cell should
A little fans, and make those fan continuous runnings；And after a time delay, the control unit stops exporting the second control letter
Number to the delay cell, to control those fans to shut down.
7. fan control device as claimed in claim 6, it is characterised in that the fan control device further includes：
One boosting unit, connect between the power port and the delay cell, to be boosted to the accessory power supply.
8. fan control device as claimed in claim 7, it is characterised in that the delay cell includes：
One first switch, connect between the control unit and an earth point；
One second switch, connect between the first switch, the power port and those fans；
Wherein, when the control unit exports second control signal to the delay cell, the first switch turn on and make this
One control terminal of two switches is grounded and turned on, and the accessory power supply is exported to those fans.
9. fan control device as claimed in claim 1, it is characterised in that when the dutycycle of the pulse wave width modulation signal is big
After this at least a threshold values, the control unit gradually rises according to dutycycle and controls those fans gradually to increase rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720534236.2U CN206801917U (en) | 2017-05-12 | 2017-05-12 | Fan control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720534236.2U CN206801917U (en) | 2017-05-12 | 2017-05-12 | Fan control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206801917U true CN206801917U (en) | 2017-12-26 |
Family
ID=60739790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720534236.2U Withdrawn - After Issue CN206801917U (en) | 2017-05-12 | 2017-05-12 | Fan control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206801917U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869370A (en) * | 2017-05-12 | 2018-11-23 | 保锐科技股份有限公司 | Fan control device and its operating method |
-
2017
- 2017-05-12 CN CN201720534236.2U patent/CN206801917U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869370A (en) * | 2017-05-12 | 2018-11-23 | 保锐科技股份有限公司 | Fan control device and its operating method |
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