CN105889109A - System And Method For Controlling Forward/Reverse Rotation Of Fan - Google Patents
System And Method For Controlling Forward/Reverse Rotation Of Fan Download PDFInfo
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- CN105889109A CN105889109A CN201510796836.1A CN201510796836A CN105889109A CN 105889109 A CN105889109 A CN 105889109A CN 201510796836 A CN201510796836 A CN 201510796836A CN 105889109 A CN105889109 A CN 105889109A
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- Prior art keywords
- motor
- control
- fan
- time
- circuit
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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
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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
- 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
- F04D27/007—Conjoint control of two or more different functions
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
Abstract
The invention provides a system and method for controlling forward/reverse rotation of fan. The control system includes a motor, an interface circuit, a motor controller and a detection control circuit. The interface circuit receives and converts a pulse width modulation signal. The fan dissipates heat when the motor is operated in a forward rotation mode and eliminates dust when the motor is operated in a reverse rotation mode. The detection control circuit reads a duty cycle of the converted pulse width modulation signal in real time. When the motor is operated in the forward rotation mode, the detection control circuit drives the motor controller to control the rotation speed of the fan according to the duty cycle. If the duty cycle is lower than or equal to a first threshold value, the detection control circuit drives the motor controller to switch operation mode of the motor from the forward rotation mode to the reverse rotation mode. The control system can dynamically control the motor and the fan to carry out forward rotation for blowing and reverse rotation for ventilation, in order to realize radiation and dust removal purposes with high efficiency.
Description
Technical field
This case relates to a kind of control system, particularly relate to a kind of control system controlling fan rotating and
Its control method being suitable for.
Background technology
The fan of heat transmission is the most important radiator structure for electronic equipment, because temperature meeting
Directly influence the operational effectiveness of electronic component, degree of stability and service life, and the structure of fan designs
Relatively change also with the designs trend of kenel of electronic equipment.
The shaping-orientation of the fan being arranged in electronic equipment is mainly to provide heat sinking function, purpose
Be not affect the normal operation of electronic equipment, fan by air by the air inlet inhalation machine of electronic equipment
In body, then the air with heat energy is discharged by the air outlet of electronic equipment, and then reach runaway electron
The purpose of the internal heat energy of equipment.But, this fan finds in practice experience, and it is people most
Denounced is the problem piling up dust on fan fin, when fan fin produces asking of dust accretions
During topic, the air output of fan is the most not enough, and then affects the heat dissipation of fan, causes installing fan
Electronic equipment produces the risk damaged.Additionally, the dust piled up on fan fin more can cause heat radiation
The load that fan is unnecessary, the electric energy that not only can increase consumption, more will shorten the service life of fan.
In order to solve the problem of above-mentioned dust accretions, prior art develops one and has reversion dedusting effect
The fan of fruit, when electronic equipment starts, is used for controlling the control system just the most corresponding driving wind of fan
Fan starts to rotate backward to remove the dust piled up on the fin of fan, to solve above-mentioned dust accretions
Problem, follow-up drive fan persistently to rotate forward and dispel the heat again.Yet with fan in electronics
During equipment long time running, dust accretions situation on fan fin still can occur, therefore above-mentioned control
System controls the problem that the function mode of fan still cannot effectively solve dust accretions.
If from the foregoing, it will be observed that be intended to effectively solve the problem of dust accretions, the control system of fan should be towards movably
State ground controls fan and is switched to reversion to design by rotating forward, to pile up too much dust at fan fin at any time
Time control fan and carry out inverting dedusting, but do not have the fan of this type to occur, because this sets at present
Meter concept may face many problems.First, first problem be i.e. fan control system this such as
What avoids being affected by uncontrollable external force factor, cause judge by accident fan need to carry out forward or reverse it
Between switching control and carry out mistake control so that electronic equipment cannot be dissipated by fan effectively
Heat or make the flabellum of fan carry out dedusting.
Second Problem be i.e. due to electronic equipment be generally of in response to fan whether normal operation and corresponding
Use the function of relevant protection mechanism, that is when fan normal operation, such as during forward or reverse, electricity
One main circuit of subset can determine whether out fan normal operation, therefore does not start relevant protection mechanism, but
Extremely decommissioning once fan, main circuit just differentiates that current fan is unusual condition, and then right
Relevant protection mechanism should be taked, to avoid electronic equipment to damage because of overheated.If it follows that being intended to set
The control system of meter fan dynamically controls fan and is switched to reversion by rotating forward or just switched to by reversion
Turn, then must account for when control system control fan commutates, when fan necessarily has one section
Between be in inertia halted state, now the main circuit of electronic equipment will be when fan is inertia halted state
Erroneous judgement fan is that unusual condition takes unnecessary protection mechanism, and then affects the usefulness of electronic equipment,
The control system the most how designing fan need not can significantly change its internal circuit structure, and unfavorable
By other extra circuit or control method, can dynamically and immediately control fan and be switched to instead by rotating forward
Turn, avoid the main circuit of electronic equipment to be switched to reversion to start unnecessary guarantor at fan by rotating forward simultaneously
Protection mechanism, is also one of current emphasis researched and developed.
Therefore, a kind of control improving above-mentioned prior art defects controlling fan rotating how is developed
System processed and applicable control method thereof, actually correlative technology field person is the most in the urgent need to address
Problem.
Summary of the invention
The main purpose of this case is for providing a kind of control system controlling fan rotating and applicable control thereof
Method processed, control system is with the dual validation testing responsibility to received pulse width modulation signal
Cycle ratio judges, performs co-rotating mode or reversion with the control motor corresponding according to judged result
Pattern, to solve the control system of existing fan and cannot efficient solution determine the flabellum dust accretions of fan,
And easily erroneous judgement fan need to carry out the switching control between forward or reverse and carry out the control etc. of mistake
Defect.
Another main purpose of this case is for providing a kind of control system controlling fan rotating and being suitable for
Control method, control system can control turning of motor by the way of automatically detection and count internal
To, to reach the radiating requirements of immediately monitoring electronic equipment, and then start certainly when radiating requirements is less
Move the mechanism of dedusting and strengthen dust removing effects.
Another main purpose of this case is for providing a kind of control system controlling fan rotating and being suitable for
Control method, control system pass through the relatively simple frequency output circuitry of circuit structure and frequency analog
Being collocated with each other between circuit, with when motor is in inertia halted state, by frequency analog circuit
Corresponding output analog frequency signal, to the main circuit of electronic equipment, makes main circuit be in inertia at motor and stops
Only still judge during state that fan is normal operation and does not start relevant protection mechanism.
For reaching above-mentioned purpose, this case provides a kind of control system in order to control fan rotating, comprises:
Motor, the fan of drive electronics operates；Interface circuit, receives pulse width modulation signal
And change；Motor control unit, electrically connects with motor, in order to control the rotating speed of motor, and controls
Motor operation processed makes fan dispel the heat in co-rotating mode, or controls motor operation in reversing mode
Fan is made to carry out dedusting；And detection control circuit, electrically connect with interface circuit and motor control unit,
In order to the responsibility cycle ratio of the instant pulse width modulation signal read after changing, and at motor operation
When co-rotating mode, motor control unit correspondence is driven to control turning of motor according to responsibility cycle ratio
Speed, and detection control circuit more judging that responsibility cycle ratio is less than or equal to dual validation testing
During the first threshold value, drive motor control unit to control motor and switched to reversing mode by co-rotating mode.
For reaching above-mentioned purpose, this case separately provides a kind of control method, application controls system, wherein controls
Pulse width modulation signal that system is exported according to electronic equipment and the fan that controls electronic equipment is corresponding
Running, and there is motor, in order to drive fan to operate, it is as follows that control method comprises step: (a)
Driving control system comes into operation；B () controls motor operation at co-rotating mode；C () is with dual validation testing
Whether the responsibility cycle ratio judging pulse width modulation signal is less than or equal to the first threshold value；(d)
When the judged result of step (c) is for being, controls motor and switched to reversing mode by co-rotating mode；(e) with
Dual validation testing judges whether the responsibility cycle ratio of pulse width modulation signal is more than or equal to
Two threshold values；F () is when the judged result of step (e) is no, it is judged that motor operation is in the dimension of reversing mode
Hold whether the time exceedes default reversing time；And (g) is when the judged result of step (f) is for being, again
Perform step (b).
For reaching above-mentioned purpose, this case provides again a kind of control system in order to control fan rotating, bag
Containing: motor, the fan of drive electronics operates；Interface circuit, receives pulse width modulation
Signal is also changed；Motor control unit, electrically connects with motor, in order to control the rotating speed of motor,
And control motor operation and make in co-rotating mode fan dispel the heat, or control motor operation in reversion mould
Formula and make fan carry out dedusting；Detection control circuit, electrically connects with interface circuit and motor control unit,
In order to the responsibility cycle ratio of the instant pulse width modulation signal read after changing, and at motor operation
When co-rotating mode, motor control unit correspondence is driven to control turning of motor according to responsibility cycle ratio
Speed, and detection control circuit more judging that responsibility cycle ratio is less than or equal to dual validation testing
During the first threshold value, drive motor control unit to control motor and switched to reversing mode by co-rotating mode；
Frequency analog circuit, electrically connects with detection control circuit, in order to when motor is in inertia halted state,
Output analog frequency signal is to electronic equipment；And frequency output circuitry, with motor control module and inspection
Survey control circuit electrically connects, and is used to motor operation when co-rotating mode or reversing mode, output and horse
The actual frequency signal that the rotating speed that reaches is corresponding, and passed by detection control circuit and frequency analog circuit
Deliver to electronic equipment.
Understand based on technique scheme, the method have technical effect that: come with dual validation testing
Carry out the judgement of the responsibility cycle ratio of pulse width modulation signal, with the control corresponding according to judged result
Motor processed carries out forward or reverse, therefore the control system of this case be possible not only to dynamically to control motor and
Fan carries out clockwise rotation blowing, so that heat energy loss, and then make electronic equipment dispel the heat efficiently, it is possible to
Dynamic control motor and fan carry out inverting convulsion, make the dust on the flabellum of fan remove, to reach
Purpose to dedusting.
Accompanying drawing explanation
Fig. 1 is the circuit structure square of the control system controlling fan rotating of this case preferred embodiment
Schematic diagram.
Fig. 2 is the running of a preferred embodiment of the control method being applied to the control system shown in Fig. 1
Flow chart.
Fig. 3 is the operation workflow figure of the sub-step of step S3 shown in this case Fig. 2.
Fig. 4 is the operation workflow figure of the sub-step of step S5 shown in this case Fig. 2.
Fig. 5 is that the control system shown in Fig. 1 or the control method shown in Fig. 2 are according to pulse width
The judged result of the responsibility cycle ratio of modulating signal and the corresponding motor operation that controls are in co-rotating mode or anti-
Hysteresis graph during rotary-die type.
Fig. 6 is that the control method of this case is by frequency analog circuit output analog frequency signal or by frequency
The flow chart of steps of rate output circuit output actual frequency signal.
Description of reference numerals:
1: control system
10: motor
11: interface circuit
12: motor control module
120: motor control unit
121: power switch circuit
13: detection control circuit
130: enumerator
14: regulation circuit
15: Hall testing circuit
16: frequency output circuitry
17: frequency analog circuit
9: main circuit
Sp: pulse width modulation signal
Vcc: input direct voltage
The step of S1～S6: control method
S31～S34, S51～S54: sub-step
S1 '～S6 ': frequency analog circuit output analog frequency signal or the actual frequency of frequency output circuitry output
The step of rate signal
Detailed description of the invention
Some exemplary embodiments embodying this pattern characteristics and advantage will describe in the explanation of back segment in detail.
Iting should be understood that this case can have various changes in different aspects, it is all without departing from this case
Scope, and explanation therein and accompanying drawing be illustrated as being used in itself, and nand architecture is in limiting this case.
Please refer to Fig. 1, its control system controlling fan rotating being this case preferred embodiment
Circuit structure block schematic diagram.As it is shown in figure 1, the control system 1 of the present embodiment is in order to control an electricity
A fan (not shown) in subset carries out rotating forward heat radiation or the running of reversion dedusting.In this electronic equipment
Having a main circuit 9, electrically connect with control system 1, main circuit 9 may be used to control the master of electronic equipment
Operate, and main circuit 9 can corresponding according to the change of the radiating requirements in electronic equipment export movably
Pulse width modulation signal Sp that state changes, to control system 1, makes control system 1 according to pulse width
Degree modulating signal Sp and the corresponding rotating speed controlling fan and rotation direction.Above-mentioned pulse width modulation signal
The actually corresponding change according to the difference of radiating requirements of electronic equipment of the one responsibility cycle ratio of Sp.
For example, when the radiating requirements of electronic equipment improves, the responsibility week of pulse width modulation signal Sp
Phase ratio is just big to strain, otherwise, when the radiating requirements of electronic equipment reduces, pulse width modulation
The responsibility cycle ratio just correspondence of signal Sp diminishes.
Control system 1 comprises motor 10, interface circuit 11, motor control module 12 and
Detection control circuit 13.Motor 10 can be but be not limited to three-phase brushless d.c. motor, and it can carry out turning
Move and drive fan synchronous axial system.Certainly, motor 10 is alternatively single-phase motor.
Motor control module 12 electrically connects with motor 10, runs in order to control motor 10 (and fan)
One co-rotating mode or a reversing mode, with control accordingly fan when co-rotating mode just then dissipate
Heat, or invert when reversing mode and carry out dedusting.Motor control module 12 has a motor control list
Unit 120 and a power switch circuit 121.Power switch circuit 121 electrically connects with motor 10, and bag
(not shown) Han at least one power switch, power switch circuit 121 is in order to receive transmitted by outside
Electric energy.The electric energy such as provided by civil power, and utilize power switch switch switching and by this electric energy
Be converted to the electric current needed for motor 10, to export this electric current to drive motor 10 to operate.Additionally, merit
Rate on-off circuit 121 can adjust motor 10 and wind by changing the size of the electric current driving motor 10
The rotating speed of fan, or by changing the sense of current driving motor 10 to adjust motor 10 and fan
Rotation direction.Motor control unit 120 then electrically connects with power switch circuit 121, in order to control
The running of power switch circuit 121.Such as control opening of the power switch in power switch circuit 121
Close sequential, thereby adjust size and the direction of the electric current that motor 10 is received, and then control turning of fan
Speed and turn to.In some embodiments, when motor 10 operates in reversing mode, turning of motor 10
Speed can be but be not limited to be fixed on 3000RPM.
Interface circuit 11 electrically connects with the main circuit 9 of electronic equipment, is transmitted in order to receive main circuit 9
Pulse width modulation signal Sp, and this pulse width modulation signal Sp is changed.
Detection control circuit 13 and interface circuit 11 and the motor control unit 120 of motor control module 12
Electrical connection, it is with the pulse width modulation signal after the conversion of immediate mode read interface circuit 11 output
Sp, to obtain the responsibility cycle ratio representated by pulse width modulation signal Sp, and then output can reflect
One driving signal of this responsibility cycle ratio is to motor control unit 120.Motor control unit 120 can depend on
According to opening of the power switch in the responsibility cycle rate control power switch circuit 121 that driving signal is corresponding
Close sequential, and then adjust size and the direction etc. of the electric current that motor 10 is received.Accordingly, motor control
The rotating speed of unit 120 controllable motor 10 and operation mode (co-rotating mode as escribed above or reversion mould
Formula).Additionally, detection control circuit 13 is also when motor 10 operates in co-rotating mode, according to this responsibility
The reading result of cycle ratio drives motor control unit 120 to control the rotating speed of fan, and with dual really
Recognize mode and judge whether the result of responsibility cycle ratio is less than or equal to one first threshold value, with in judgement
When result is for being, utilizes and drive signal to drive motor control module 12 to control motor 10 by co-rotating mode
Switch to reversing mode.In one embodiment, detection control circuit 13 is microprocessor, and motor control
Molding block 12 is a motor drive integrated circuit.To be illustrated at this, above-mentioned dual confirm as
Responsibility cycle ratio corresponding to two pulse width modulation signal Sp transmitting continuously when main circuit 9 is the least
In or equal to above-mentioned first threshold value time, then detection control circuit 13 judge need to carry out co-rotating mode switching
Running for reversing mode.And ought transmit continuously two responsibilities that pulse width modulation signal Sp is corresponding
When cycle ratio therein is more than above-mentioned first threshold value, then detection control circuit 13 judge to be not required to into
Row co-rotating mode switches to the running of reversing mode.Therefore, misoperation or the arteries and veins of main circuit 9 can be avoided
Rush width modulation signal Sp disturbed and cause motor 9 rotating repeatedly to switch during transmitting.
In above-described embodiment, detection control circuit 13 exports the driving letter to motor control unit 120
Number comprise the signal corresponding to responsibility cycle ratio and mode switching signal.When the side with dual confirmation
Formula confirms that responsibility cycle ratio then exports less than or equal to above-mentioned first threshold value, detection control circuit 13
There is the switching signal of the first logical voltage level to motor control module 12.When the side with dual confirmation
Formula confirms that two responsibility cycle ratios therein, more than above-mentioned first threshold value, detect control circuit 13
Then output has the switching signal of the second logical voltage level to motor control module 12.When receiving difference
During the mode switching signal of logical voltage level, motor control unit 120 is then corresponding controls power switch
The sense of current of the coil in the switching sequence of the power switch of circuit 121, and then change motor 10,
The flabellum controlling fan with correspondence turns to.In other words, there is the first logical voltage level when persistently receiving
Mode switching signal time, motor control unit 120 continuous service is in co-rotating mode.Have when receiving
During the mode switching signal of the second logical voltage level, motor control unit 120 then changes into running on anti-
Rotary-die type.In a preferred embodiment, above-mentioned first logical voltage level is logic high voltage level,
And above-mentioned second logical voltage level is logic low voltage level.In another preferred embodiment, above-mentioned
First logical voltage level is logic low voltage level, and above-mentioned second logical voltage level is logic high
Voltage level.
In above-described embodiment, detection control circuit 13 also has an enumerator 130, when it is countable
Between, detect control circuit 13 and then can carry out corresponding control according to the length of the time that enumerator 130 is counted
Mode switching signal processed is maintained at the first logical voltage level or the time of the second logical voltage level,
Therefore drive motor control module 12 to control running time that motor 10 maintains under co-rotating mode and/or
Motor 10 maintains the running time under reversing mode.It addition, when control system 1 comes into operation,
Output actually can be made motor control module 12 control motor 10 first to operate in by detection control circuit 13
The driving signal of co-rotating mode, make fan be driven by motor 10 when control system 1 comes into operation and
First rotate forward.
Additionally, when the control system 1 of this case comes into operation, the motor 10 of this case actually can pass through
Detect control circuit 13 and the control of motor control module 12 and first operate in co-rotating mode one and just presetting
Turn the time, such as one hour.And motor 10 is when operating in reversing mode, can be by detection control circuit
13 and the control of motor control module 12 and maintain one to preset reversing time, this default reversing time can be
But it is not limited to 20 seconds, 25 seconds, 30 seconds 35 seconds or 40 seconds etc..The most above-mentioned default rotating forward time and
Default reversing time can be counted by the enumerator 130 of detection control circuit 13.
What is more, operating in the period of reversing mode at motor 10, detection control circuit 13 is also with double
When whether weight validation testing judges the result of responsibility cycle ratio more than or equal to second threshold value, with
When judged result is for being, utilize drive signal and drive motor control module 12 control motor 10 by
Reversing mode switches to co-rotating mode, to carry out antipyretic purpose.
In some embodiments, control system 1 also has a regulation circuit 14, and it can be but be not limited to
It is made up of one direct current/DC converting circuit, regulation circuit 14 and detection control circuit 13 and motor control
Molding block 12 electrically connects, in order to receive the input direct voltage Vcc transmitted by electronic equipment, and
Be an output DC voltage by input direct voltage Vcc blood pressure lowering, be supplied to detect control circuit 13 and
Motor control module 12 uses, and wherein input direct voltage Vcc can be but be not limited to 12V, and exports
DC voltage can be but be not limited to 5V.
It addition, control system 1 also can have a Hall testing circuit 15, Hall testing circuit 15 and horse
Reach 10 and motor control module 12 electrically connect, it can be by a Hall element or multiple Hall element
Constituted, in order to detect the change of the magnetic pole (i.e. flabellum magnetic pole) of the rotor of motor 10 and to position,
And testing result is sent to motor control module 12, make motor control module 12 can detect according to Hall
The testing result of circuit 15 judges position of magnetic pole, and then the dynamic running that should control motor 10.
Again in this case, electronic equipment can have equally can according to fan whether be normally carried out running and right
The function of relevant protection mechanism should be used.That is when fan carries out normal operation, such as forward or reverse
Time, the main circuit of electronic equipment can determine whether out fan normal operation, therefore do not starts relevant protection mechanism.
But extremely decommission once fan, main circuit just differentiates that current fan is unusual condition, enters
And correspondence takes relevant protection mechanism, to avoid electronic equipment to damage because of overheated.Therefore in order in response to electricity
Whether subset has and can be normally carried out operating and the corresponding merit using relevant protection mechanism according to fan
Can, in some embodiments, control system 1 also can have frequency output circuitry 16 and a frequency mould
Intend circuit 17.The motor control unit 120 of frequency output circuitry 16 and motor control module 12 and inspection
Surveying control circuit 13 to electrically connect, frequency output circuitry 16 can operate in co-rotating mode or anti-in motor 10
During rotary-die type, driven by motor control unit 120 and export corresponding with the rotating speed of motor 10 in fact
Border frequency signal gives detection control circuit 13.And when motor 10 is in inertia halted state, such as, carry out
Between co-rotating mode and reversing mode during the produced inertia halted state of switching, frequency output circuitry 16
Then stop output actual frequency signal.Frequency analog circuit 17 then with the main circuit 9 of electronic equipment and inspection
Survey control circuit 13 to electrically connect, when motor 10 operates in co-rotating mode or reversing mode, due to this
Time detection control circuit 13 receive the actual frequency signal that frequency output circuitry 16 is exported, therefore inspection
Surveying control circuit 13, to control frequency analog circuit 17 inoperative, simultaneously detection control circuit 13 also by
Actual frequency signal is sent to circuit system 9 by frequency analog circuit 17.But when motor 10 is in used
Property halted state, such as carry out between co-rotating mode and reversing mode the produced inertia of switching and stop shape
During state, frequency analog circuit 17 is then detected control circuit 13 and drives and come into operation, defeated with correspondence
Going out an analog frequency signal to main circuit 9, wherein this analog frequency signal can be but be not limited to simulate motor
The rotating speed of 10 is the frequency signal of a specific rotation speeds, such as 500RPM.
Therefore when motor control unit 120 drives motor 10 to operate in co-rotating mode or reversing mode,
Motor control unit 120 orders about frequency output circuitry 16 and exports actual frequency signal to detection control circuit
13, now frequency analog circuit 17 is inoperative, detects control circuit 13 then by actual frequency signal
Exported to main circuit 9 by frequency analog circuit 17, make main circuit 9 judge fan normal operation, therefore
Do not start relevant protection mechanism.And when motor 10 is in inertia halted state, owing to now detecting control
Circuit 13 processed also cannot receive the actual frequency signal that frequency output circuitry 16 is exported, therefore detection
Driving frequency analog circuit 17 is exported analog frequency signal to main circuit 9 by control circuit 13, makes main electricity
Road 9 still judges that when motor 10 is in inertia halted state fan is normal operation and does not start relevant guarantor
Protection mechanism.
In some embodiments, when frequency output circuitry 16 by output actual frequency signal change be stopping
During output actual frequency signal, frequency output circuitry 16 also can export reality after the setting time again
Frequency signal, wherein this setting time practically equals to or is in inertia halted state institute more than motor 10
The time needed, such as 3.3 seconds.So in other embodiments, when frequency output circuitry 16 is real by output
When border frequency signal changes into stopping output actual frequency signal, frequency output circuitry 16 also can be in motor
The rotating speed of 10 is more than a setting speed, such as after zero, and output actual frequency signal again.
Referring to Fig. 2 and coordinate Fig. 1, wherein Fig. 2 is the control being applied to the control system shown in Fig. 1
The operation workflow figure of one preferred embodiment of method.As it can be seen, first, perform step S1, drive
Control system 1 comes into operation.The most in step sl, can be straight by the input that such as input is 12V
Stream voltage vcc and the relevant of pulse width modulation signal Sp that responsibility cycle ratio is 100% start ginseng
Number carrys out driving control system 1 and comes into operation.
Then, performing step S2, control system 1 is by detection control circuit 13 and motor control module
12 control motor 10 operates in co-rotating mode.The most in step s 2, no matter pulse width modulation is believed
Responsibility cycle ratio number corresponding to Sp under any change, detection control circuit 13 and motor control
Module 12 controls motor 10 and all maintains and operate on co-rotating mode, and can maintain the default rotating forward time.This
Outward, within the default rotating forward time, detect control circuit 13 also read interface circuit 11 in the way of instant
The responsibility cycle rate of change of pulse width modulation signal Sp after the conversion exported, drives with correspondence
Motor control module 12 controls the rotating speed of motor 10 and fan, and the rotating speed thereby making fan can be according to electricity
The difference of the radiating requirements of subset and change at any time, to provide electronic equipment enough heat-sinking capability.
After step S2 terminates, then perform step S3, that is judge pulse width with dual validation testing
Whether the responsibility cycle ratio of degree modulating signal Sp is less than or equal to the first threshold value.Wherein in step
In S3, the first threshold value can for example, arbitrary value between 40% and 49%, and preferably implement one
In example, the first threshold value can between 45% and 48%, preferably 46%.It addition, in step S3
In, dual validation testing is actually the responsibility week carrying out twice judgement pulse width modulation signal Sp
Whether phase ratio is smaller than or to be equal to the first threshold value.In step s3, by judging pulse width
Whether the responsibility cycle ratio of modulating signal Sp is less than or equal to the first threshold value, be the most i.e. for
When the radiating requirements of electronic equipment is less, control system 1 just drives motor 10 to be cut by co-rotating mode
It is changed to reversing mode to carry out the dedusting in certain time, therefore reduces motor 10 and operate on reversing mode
Time the heat radiation of electronic equipment is affected.
When the responsibility cycle ratio that judged result is pulse width modulation signal Sp of step S3 is not less than
Or during equal to the first threshold value, the most again perform step S2.Otherwise, when the judged result of step S3 is
When the responsibility cycle ratio of detection pulse width modulation signal Sp is less than or equal to the first threshold value, then hold
Row step S4, utilizes the mould having the first logical voltage level in detection control circuit 13 output drive signal
Formula switching signal, makes motor control module 12 control motor 10 and is switched to reversing mode by co-rotating mode.
In step s 4, when motor 10 is switched to reversing mode by co-rotating mode, motor 10 follows the wind fan will
Synchronize to be become rotating forward inertia from rotating forward running to stop, then stopped switching to invert running by rotating forward inertia.
It addition, in step s 4, detection control circuit 13 also switches to reversion in motor 10 because of co-rotating mode
Pattern and when being in inertia halted state driving frequency analog circuit 17 export analog frequency signal.
After step S4 terminates, then perform step S5, judge pulse width modulation with dual validation testing
Whether the responsibility cycle ratio of signal Sp is more than or equal to the second threshold value.Judgement when step S5
Result be pulse width modulation signal Sp responsibility cycle ratio more than or equal to the second threshold value time, then
Utilize the pattern switching letter having the second logical voltage level in detection control circuit 13 output drive signal
Number, make motor control module 12 control motor 10 and switched to co-rotating mode, Yi Jizai by reversing mode
Secondary execution step S2.Anti-, when the judged result of step S5 is detection pulse width modulation signal Sp
Responsibility cycle ratio not greater than or equal to the second threshold value time, then perform step S6, it is judged that motor
10 operate in whether holding time of reversing mode exceedes default reversing time.When the judgement of step S6 is tied
Fruit for motor 10 operate in reversing mode hold time exceed default reversing time time, then utilize detection
Control circuit 13 output drive signal has the mode switching signal of the second logical voltage level, makes motor
Control module 12 controls motor 10 and is switched to co-rotating mode by reversing mode, that is again performs step
S2.Anti-, when the judged result of step S6 is that motor 10 operates in holding time not of reversing mode
When exceeding default reversing time, the most again perform step S5.
In above-mentioned steps S5, when motor 10 operates in reversing mode, if electronic equipment has heat radiation
Demand and make main circuit 9 export responsibility cycle ratio more than the pulse width modulation signal of the second threshold value
Sp, motor control module 12 just controls motor 10 and is switched to co-rotating mode immediately to enter by reversing mode
Row heat radiation.It addition, from step S6, the control system 1 of this case actually controls motor 10
Operate in reversing mode time span and maintain default reversing time, make fan enter in default reversing time
Row reversion dedusting, once exceedes default reversing time, motor control module 12 just controllable motor 10
Co-rotating mode is switched to again to dispel the heat by reversing mode.
Referring to Fig. 3, it is the operation workflow figure of the sub-step of step S3 shown in this case Fig. 2.As
Shown in Fig. 3, sub-step S31 being first carried out, detect time, such as 2 microseconds every one, detection controls
Circuit 13 reads the responsibility cycle ratio of pulse width modulation signal Sp.Then, sub-step S32 is performed,
Judge whether the responsibility cycle ratio of pulse width modulation signal Sp read for the first time is less than or equal to
First threshold value.When the judged result of sub-step S32 is for being, then perform sub-step S33, it is judged that the
Whether the responsibility cycle ratio of pulse width modulation signal Sp that secondary reads is less than or equal to first
Limit value.When the judged result of sub-step S33 is for being, then perform sub-step S34, it is judged that read for the first time
The responsibility cycle ratio that pulse width modulation signal Sp got and second time read the most smaller than or
Equal to the first threshold value.When the judged result of sub-step S34 is for being, then perform step S4.
It addition, when the judged result of sub-step S32 is no, then perform step S2.When sub-step S33
Judged result be no, then perform step S2.When the judged result of sub-step S34 is no, then hold
Row step S2.
Referring to Fig. 4, it is the operation workflow figure of the sub-step of step S5 shown in this case Fig. 2.As
Shown in Fig. 4, sub-step S51 being first carried out, detect time, such as 2 microseconds every one, detection controls
Circuit 13 reads the responsibility cycle ratio of pulse width modulation signal Sp.Then, sub-step S52 is performed,
Judge whether the responsibility cycle ratio of pulse width modulation signal Sp read for the first time is more than or equal to
Second threshold value.When the judged result of sub-step S52 is for being, then perform sub-step S53, it is judged that the
Whether the responsibility cycle ratio of pulse width modulation signal Sp that secondary reads is more than or equal to second
Limit value.When the judged result of sub-step S53 is for being, then perform sub-step S54, it is judged that read for the first time
The responsibility cycle ratio that pulse width modulation signal Sp got and second time read the most all more than or
Equal to the second threshold value.When the judged result of sub-step S54 is for being, then perform step S6.
It addition, when the judged result of sub-step S52 is no, then perform step S2.When sub-step S53
Judged result be no, then perform step S2.When the judged result of sub-step S54 is no, then hold
Row step S2.
Refer to Fig. 5, its for the control system shown in Fig. 1 or the control method shown in Fig. 2 in foundation
The judged result of the responsibility cycle ratio of pulse width modulation signal and the corresponding motor operation that controls are in rotating forward
Hysteresis graph when pattern or reversing mode.As it is shown in figure 5, owing to fan carries out forward or reverse
Handoff procedure in, if electronic equipment has radiating requirements, main circuit actually can change pulse width
The responsibility cycle ratio of modulating signal Sp, causes responsibility cycle ratio may produce the phenomenon rocking change,
It addition, electronic equipment is likely to cause the radiating requirements within erroneous judgement because of the impact of some external force factors,
Main circuit output is caused cannot truly to reflect the pulse width modulation signal of radiating requirements, consequently, it is possible to
All switched to reversing mode by making traditional control circuit control motor by mistake by co-rotating mode, or miss
Control motor and switched to co-rotating mode by reversing mode, so from the foregoing, the control system 1 of this case
The judgement of responsibility cycle ratio is not only carried out with dual validation testing, also bent with the magnetic hysteresis shown in Fig. 5
The decision-making function of line carries out the judgement of the responsibility cycle of pulse width modulation signal Sp, that is according to arteries and veins
Rush the responsibility cycle ratio of width modulation signal Sp whether come less than or equal to the result of the first threshold value right
Should control whether motor 10 is switched to reversing mode by co-rotating mode, and according to pulse width modulation signal
Whether the responsibility cycle ratio of Sp carrys out corresponding control motor 10 more than or equal to the result of the second threshold value
Whether switched to co-rotating mode by reversing mode, therefore the control system 1 of this case can avoid electronic equipment
Main circuit 9 judges the radiating requirements of inside by accident.
Referring to Fig. 6, it is that the control method of this case is by frequency analog circuit output analog frequency signal
Or the flow chart of steps by frequency output circuitry output actual frequency signal.First, perform step S1 ',
The conditional parameter turned to is changed, also when the responsibility cycle ratio of pulse width modulation signal Sp meets fan
I.e. operate on co-rotating mode and control system 1 judges responsibility cycle with dual validation testing at motor 10
The result of ratio is less than or equal to the first threshold value, or motor 10 operates on reversing mode and controls system
When system 1 judges the result of responsibility cycle ratio more than or equal to the second threshold value with dual validation testing,
Detection control circuit 13 exports the driving signal of correspondence and orders about motor 10 in co-rotating mode and reversing mode
Between switch over, that is drive motor 10 change turn to.
Then, during motor 10 turns to switching, owing to fan can be first in the way of inertia stopping
Stop operating, then rotate with the direction to be switched, therefore to avoid the main circuit 9 of electronic equipment
Erroneous judgement fan abends and performs the protection mechanism of mistake, in the present embodiment, in step S1 ' knot
Shu Hou, i.e. performs step S2 ', i.e. detection control circuit 13 is when motor 10 is in inertia halted state
Driving frequency analog circuit 17 exports analog frequency signal.Then, step S3 is performed ', it is judged that motor
Whether 10 complete the switching turned to, such as by the analog frequency signal of frequency analog circuit 17 output
Hold time and whether judge more than the setting time, or by the rotating speed of motor 10 whether
Judge more than setting speed.When step S3 ' judged result for being time, then perform step S4 ',
Frequency output circuitry 16 just exports actual frequency signal, and detects control circuit 13 just by actual frequency
Signal is exported to main circuit 9 by frequency analog circuit 17.Otherwise, when step S3 ' judged result
For time no, then perform step S5 ', control system 1 judges that motor 10 is the most such as because of unusual condition
Cause turning to failure.When step S4 ' judged result for being time, that is judge to turn to unsuccessfully because of horse
Reach 10 generation unusual conditions to be caused, then perform step S6 ', it is different that control system 1 just exports a motor
Regular signal is to main circuit 9, to carry out follow-up warning program.Otherwise, when step S4 ' judged result
For time no, i.e. confirm that motor 10 there is no any unusual condition, the most again perform step S2 ', to continue
Carry out the steering program of motor 10.
In sum, this case provides a kind of control system controlling fan rotating and applicable control thereof
Method, it carries out the judgement of responsibility cycle ratio of pulse width modulation signal with dual validation testing,
Carrying out forward or reverse with the control motor corresponding according to judged result, therefore the control system of this case is not
Only can dynamically control motor and fan carries out clockwise rotation blowing, so that heat energy loss, and then make electronics
Equipment dispels the heat efficiently, it is possible to dynamic control motor and fan carry out inverting convulsion, make fan
Dust on flabellum is removed, to reach the purpose of dedusting.Additionally, due to the control circuit of this case is actual
On by judge the responsibility cycle ratio of pulse width modulation signal size come corresponding control motor turn
To, therefore most of circuit structure of the control circuit of this case is completely without amendment, and can be only by amendment
Partial parameters, the such as first threshold value size, the second threshold value size etc. i.e. reach motor rotating forward,
Invert, brake, stop and maintaining the correlation functions such as minimum speed.Furthermore, due to the control wind of this case
The control system of fan rotating can control turning of motor by the way of detection automatically and count internal
To, to reach the radiating requirements of immediately monitoring electronic equipment, and then start the mechanism of automatic dust removing and add
Strong dust removing effects.What is more, the control system of this case need not additionally utilize circuit or the controlling party of complexity
Method, but by the phase between the relatively simple frequency output circuitry of circuit structure and frequency analog circuit
Mutually collocation, can be in inertia halted state at motor, such as carry out co-rotating mode and reversing mode it
Between switching produced inertia halted state time, can corresponding output analog frequency by frequency analog circuit
Signal, to the main circuit of electronic equipment, makes main circuit still judge wind when motor is in inertia halted state
Fan does not start relevant protection mechanism for normal operation.
This case must be appointed by those skilled in the art execute craftsman think and be all as modify, the most de-such as attached right
Require be intended to protector.
Claims (20)
1. one kind in order to control the control system of fan rotating, it is characterised in that comprises:
One motor, drives a fan of an electronic equipment to operate；
One interface circuit, receives a pulse width modulation signal and changes；
One motor control unit, electrically connects with this motor, in order to control the rotating speed of this motor, and controls
This motor operation makes this fan dispel the heat in a co-rotating mode, or it is anti-in one to control this motor operation
Rotary-die type and make this fan carry out dedusting；And
One detection control circuit, electrically connects with this interface circuit and this motor control unit, in order to immediately
Read the responsibility cycle ratio of this pulse width modulation signal after conversion, and this motor operation in
During this co-rotating mode, this motor control unit correspondence is driven to control this horse according to this responsibility cycle ratio
The rotating speed reached, and this detection control circuit also judging this responsibility cycle ratio with dual validation testing
During less than or equal to first threshold value, this motor control unit is driven to control this motor by this positive revolving die
Formula switches to this reversing mode.
2. control system as claimed in claim 1, it is characterised in that this motor control unit is also in this
Control this motor when control system comes into operation and first operate in this co-rotating mode.
3. control system as claimed in claim 1, it is characterised in that at this motor operation in this reversion
Under pattern, with dual validation testing, this detection control circuit is also judging that this responsibility cycle ratio is more than
Or during equal to second threshold value, drive this motor control unit to control this motor and cut by this reversing mode
It is changed to this co-rotating mode.
4. control system as claimed in claim 1, it is characterised in that when this motor operation is at reversion mould
During formula, the rotating speed of this motor is fixed on 3000RPM.
5. control system as claimed in claim 1, it is characterised in that this detection control circuit also has
One enumerator, in order to gate time.
6. control system as claimed in claim 5, it is characterised in that this detection control circuit is according to being somebody's turn to do
The length of the time that enumerator is counted and drive this motor control unit to control this motor at this reversion mould
The running time under formula is to preset reversing time.
7. control system as claimed in claim 5, it is characterised in that this detection control circuit is according to being somebody's turn to do
The length of the time that enumerator is counted and drive this motor control unit to control this motor at this positive revolving die
The running time under formula is to preset the rotating forward time.
8. control system as claimed in claim 1, it is characterised in that this control system also comprises:
One frequency analog circuit, electrically connects with this detection control circuit, when this motor operation is in this rotating forward
When pattern or this reversing mode, this frequency analog circuit is inoperative, stops shape when this motor is in inertia
During state, this frequency analog circuit exports an analog frequency signal to this electronic equipment；And
One frequency output circuitry, electrically connects with this motor control module and this detection control circuit, in order to
In this motor operation at this co-rotating mode or this reversing mode time, export corresponding with the rotating speed of this motor
An actual frequency signal, and be sent to this electricity by this detection control circuit and this frequency analog circuit
Subset, and when this motor is in inertia halted state, this frequency output circuitry stops output, and this is real
Border frequency signal.
9. control system as claimed in claim 8, it is characterised in that when this frequency output circuitry is by defeated
Go out this actual frequency signal change for stop export this actual frequency signal time, this frequency output circuitry in
Again these actual frequency letter is exported after one setting time or after the rotating speed of this motor is more than a setting speed
Number, wherein this setting time is in the time needed for inertia halted state equal to or more than this motor.
10. control system as claimed in claim 8, it is characterised in that this analog frequency signal imitation
The rotating speed of this motor is frequency signal during 500RPM.
11. 1 kinds of control methods, apply a control system, and wherein this control system is according to an electronic equipment
The pulse width modulation signal that exported and control a fan correspondence running of this electronic equipment, and have
One motor, in order to drive this fan to operate, it is characterised in that this control method comprises step such as
Under:
A () drives this control system to come into operation；
B () controls this motor operation at a co-rotating mode；
C with dual validation testing, () judges that whether a responsibility cycle ratio of this pulse width modulation signal is
Less than or equal to one first threshold value；
D (), when the judged result of step (c) is for being, controls this motor and is switched to by this co-rotating mode one anti-
Rotary-die type；
E with dual validation testing, () judges that whether this responsibility cycle ratio of this pulse width modulation signal is
More than or equal to one second threshold value；
F () is when the judged result of step (e) is no, it is judged that this motor operation is in the maintenance of this reversing mode
Whether the time presets reversing time more than one；And
G (), when the judged result of step (f) is for being, performs step (b) again.
12. control methods as claimed in claim 11, it is characterised in that in step (d), this control
System output simulates the analog frequency signal under a specific rotation speeds of this motor to this electronic equipment.
13. control methods as claimed in claim 11, it is characterised in that when the judged result of step (c)
For time no, again perform step (b).
14. control methods as claimed in claim 13, it is characterised in that this step (c) also comprises sub-step
Rapid:
(c1) this responsibility cycle ratio of this pulse width modulation signal is read every the detection time；
(c2) judge that whether this responsibility cycle ratio read for the first time is less than or equal to this first thresholding
Value；
(c3) when step (c2) judged result is for being, it is judged that this responsibility cycle ratio that second time reads
Whether less than or equal to this first threshold value；
(c4) when step (c3) judged result is for being, it is judged that this responsibility cycle of reading for the first time and the
This responsibility cycle that secondary reads the most smaller than or is equal to this first threshold value；And
(c5) when the judged result of step (c4) is for being, control this motor and switched to this by this co-rotating mode
Reversing mode.
15. control methods as claimed in claim 14, it is characterised in that when step (c2), step (c3)
Or the judged result of step (c4) is when being no, again perform step (b).
16. control methods as claimed in claim 11, it is characterised in that when the judged result of step (e)
During for being, again perform step (b).
17. control methods as claimed in claim 16, wherein this step (e) also comprises sub-step:
(e1) this responsibility cycle ratio of this pulse width modulation signal is read every the detection time；
(e2) judge that whether this responsibility cycle ratio read for the first time is more than or equal to this second thresholding
Value；
(e3) when step (e2) judged result is for being, it is judged that this responsibility cycle ratio that second time reads
Whether more than or equal to this second threshold value；
(e4) when step (e3) judged result is for being, it is judged that this responsibility cycle of reading for the first time and the
This responsibility cycle that secondary reads is the most all more than or equal to this second threshold value；And
(e5) when the judged result of step (e4) is for being, step (b) is again performed.
18. control methods as claimed in claim 17, it is characterised in that when step (e2), step (e3)
Or the judged result of step (e4) is when being no, again perform step (b).
19. control methods as claimed in claim 11, wherein when the judged result of step (f) is no,
Again perform step (e).
20. 1 kinds in order to control the control system of fan rotating, it is characterised in that comprises:
One motor, drives a fan of an electronic equipment to operate；
One interface circuit, receives a pulse width modulation signal and changes；
One motor control unit, electrically connects with this motor, in order to control the rotating speed of this motor, and controls
This motor operation makes this fan dispel the heat in a co-rotating mode, or it is anti-in one to control this motor operation
Rotary-die type and make this fan carry out dedusting；
One detection control circuit, electrically connects with this interface circuit and this motor control unit, in order to immediately
Read the responsibility cycle ratio of this pulse width modulation signal after conversion, and this motor operation in
During this co-rotating mode, this motor control unit correspondence is driven to control this horse according to this responsibility cycle ratio
The rotating speed reached, and this detection control circuit more judging this responsibility cycle ratio with dual validation testing
During less than or equal to first threshold value, this motor control unit is driven to control this motor by this positive revolving die
Formula switches to this reversing mode；
One frequency analog circuit, electrically connects with this detection control circuit, in order to be in inertia when this motor
During halted state, export an analog frequency signal to this electronic equipment；And
One frequency output circuitry, electrically connects with this motor control module and this detection control circuit, in order to
In this motor operation at this co-rotating mode or this reversing mode time, export corresponding with the rotating speed of this motor
An actual frequency signal, and be sent to this electricity by this detection control circuit and this frequency analog circuit
Subset.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/991,709 US9903381B2 (en) | 2015-02-13 | 2016-01-08 | System and method for controlling forward/reverse rotation of fan |
| JP2016006469A JP6219984B2 (en) | 2015-02-13 | 2016-01-15 | System and method for controlling forward / reverse rotation of fan |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201562115812P | 2015-02-13 | 2015-02-13 | |
| US62/115,812 | 2015-02-13 |
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|---|---|
| CN105889109A true CN105889109A (en) | 2016-08-24 |
| CN105889109B CN105889109B (en) | 2018-02-09 |
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ID=57002840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510796836.1A Active CN105889109B (en) | 2015-02-13 | 2015-11-18 | Control the control system of fan rotating and its applicable control method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106714513A (en) * | 2016-12-09 | 2017-05-24 | 国网山东省电力公司微山县供电公司 | Electric appliance cabinet and dustproof control method |
| CN108547799A (en) * | 2018-03-16 | 2018-09-18 | 青岛海尔空调器有限总公司 | Self cleaning method and air regulator for air-supply arrangement |
| CN109245635A (en) * | 2018-08-27 | 2019-01-18 | 惠州Tcl移动通信有限公司 | Motor driving method, storage medium and terminal device based on terminal device |
| CN110219817A (en) * | 2019-06-13 | 2019-09-10 | 珠海格力电器股份有限公司 | Dust removal method, device, air-conditioning system and the storage medium for controlling blower dedusting |
| CN110582179A (en) * | 2018-06-07 | 2019-12-17 | 深圳联品激光技术有限公司 | Control method applied to equipment heat dissipation and heat dissipation system |
| CN112019101A (en) * | 2020-08-31 | 2020-12-01 | 中山大洋电机股份有限公司 | Reverse rotation dust removal control method of BLDC motor applied to air conditioner outdoor unit |
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| CN113419614A (en) * | 2021-03-31 | 2021-09-21 | 联想(北京)有限公司 | Control method and control device for heat dissipation component |
| CN114688063A (en) * | 2020-12-29 | 2022-07-01 | 昆山广兴电子有限公司 | Automatic fan detection system and automatic fan detection method |
| TWI770640B (en) * | 2020-10-19 | 2022-07-11 | 致新科技股份有限公司 | Fan motor controller |
| US11699965B2 (en) | 2020-10-20 | 2023-07-11 | Global Mixed-Mode Technology Inc. | Fan motor controller |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0220944A1 (en) * | 1985-10-23 | 1987-05-06 | Tai-Her Yang | A fan with positive and reverse cyclic air flow stirring functions |
| JPH07208388A (en) * | 1994-01-13 | 1995-08-08 | Fujitsu General Ltd | Fan cooling device |
| JP2002132387A (en) * | 2000-10-25 | 2002-05-10 | Sony Computer Entertainment Inc | Control method for cooling fan and information processor |
| JP2005240806A (en) * | 2004-02-23 | 2005-09-08 | Smc Standard Microsyst Corp | Mapping of sensors to zones of fan control system |
| CN1967442A (en) * | 2005-11-18 | 2007-05-23 | 纬创资通股份有限公司 | Method for dedusting by radiator fan and dust cleaning apparatus for computer device |
| US20100013423A1 (en) * | 2008-07-15 | 2010-01-21 | Rhine Electronic Co., Ltd | Control circuitry of ceiling fan for controlling rotation direction and speed |
| CN102817862A (en) * | 2012-08-29 | 2012-12-12 | 华为技术有限公司 | Method, device and system for controlling fan |
| CN202991569U (en) * | 2013-01-06 | 2013-06-12 | 奇鋐科技股份有限公司 | Control circuit for rotating speed and forward and negative rotation of fan |
| CN103362840A (en) * | 2012-04-09 | 2013-10-23 | 台达电子工业股份有限公司 | Control method of fan |
-
2015
- 2015-11-18 CN CN201510796836.1A patent/CN105889109B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0220944A1 (en) * | 1985-10-23 | 1987-05-06 | Tai-Her Yang | A fan with positive and reverse cyclic air flow stirring functions |
| JPH07208388A (en) * | 1994-01-13 | 1995-08-08 | Fujitsu General Ltd | Fan cooling device |
| JP2002132387A (en) * | 2000-10-25 | 2002-05-10 | Sony Computer Entertainment Inc | Control method for cooling fan and information processor |
| JP2005240806A (en) * | 2004-02-23 | 2005-09-08 | Smc Standard Microsyst Corp | Mapping of sensors to zones of fan control system |
| CN1967442A (en) * | 2005-11-18 | 2007-05-23 | 纬创资通股份有限公司 | Method for dedusting by radiator fan and dust cleaning apparatus for computer device |
| US20100013423A1 (en) * | 2008-07-15 | 2010-01-21 | Rhine Electronic Co., Ltd | Control circuitry of ceiling fan for controlling rotation direction and speed |
| CN103362840A (en) * | 2012-04-09 | 2013-10-23 | 台达电子工业股份有限公司 | Control method of fan |
| CN102817862A (en) * | 2012-08-29 | 2012-12-12 | 华为技术有限公司 | Method, device and system for controlling fan |
| CN202991569U (en) * | 2013-01-06 | 2013-06-12 | 奇鋐科技股份有限公司 | Control circuit for rotating speed and forward and negative rotation of fan |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106714513A (en) * | 2016-12-09 | 2017-05-24 | 国网山东省电力公司微山县供电公司 | Electric appliance cabinet and dustproof control method |
| CN108547799A (en) * | 2018-03-16 | 2018-09-18 | 青岛海尔空调器有限总公司 | Self cleaning method and air regulator for air-supply arrangement |
| CN110582179B (en) * | 2018-06-07 | 2021-04-23 | 深圳联品激光技术有限公司 | Control method applied to equipment heat dissipation and heat dissipation system |
| CN110582179A (en) * | 2018-06-07 | 2019-12-17 | 深圳联品激光技术有限公司 | Control method applied to equipment heat dissipation and heat dissipation system |
| CN109245635A (en) * | 2018-08-27 | 2019-01-18 | 惠州Tcl移动通信有限公司 | Motor driving method, storage medium and terminal device based on terminal device |
| CN109245635B (en) * | 2018-08-27 | 2020-11-13 | 惠州Tcl移动通信有限公司 | Motor driving method based on terminal device, storage medium and terminal device |
| CN110219817A (en) * | 2019-06-13 | 2019-09-10 | 珠海格力电器股份有限公司 | Dust removal method, device, air-conditioning system and the storage medium for controlling blower dedusting |
| CN112019101A (en) * | 2020-08-31 | 2020-12-01 | 中山大洋电机股份有限公司 | Reverse rotation dust removal control method of BLDC motor applied to air conditioner outdoor unit |
| TWI770640B (en) * | 2020-10-19 | 2022-07-11 | 致新科技股份有限公司 | Fan motor controller |
| US11699965B2 (en) | 2020-10-20 | 2023-07-11 | Global Mixed-Mode Technology Inc. | Fan motor controller |
| CN114688063A (en) * | 2020-12-29 | 2022-07-01 | 昆山广兴电子有限公司 | Automatic fan detection system and automatic fan detection method |
| CN113419614A (en) * | 2021-03-31 | 2021-09-21 | 联想(北京)有限公司 | Control method and control device for heat dissipation component |
| CN113327363A (en) * | 2021-06-16 | 2021-08-31 | 佛山予恩科技有限公司 | Intelligent integrated access control and backup power controller and control method thereof |
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