CN106321480A - Strong regulation and control method for rotational speed of fan - Google Patents
Strong regulation and control method for rotational speed of fan Download PDFInfo
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- CN106321480A CN106321480A CN201510371535.4A CN201510371535A CN106321480A CN 106321480 A CN106321480 A CN 106321480A CN 201510371535 A CN201510371535 A CN 201510371535A CN 106321480 A CN106321480 A CN 106321480A
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- fan
- value
- rotation speed
- speed
- rotating speed
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Abstract
The invention discloses a strong regulation and control method for a rotational speed of a fan. The strong regulation and control method comprises the following steps: firstly, sensing the rotational speed of the fan by virtue of a rotational speed sensing unit, and generating a fan rotational speed value; and secondly, comparing the fan rotational speed value with a target rotational speed value by virtue of a micro-processing unit, and enabling a drive unit to output a first drive signal in a first predetermined time to increase the fan rotational speed value by a first rotational speed value in per unit time, and then output a second drive signal in a second predetermined time to increase the fan rotational speed value by a second rotational speed value in per unit time when the fan rotational speed value is different from the target rotational speed value.
Description
Technical field
The present invention is about fan rotational frequency control method, and the rotation speed of the fan in particular to two-period form regulates and controls
Method.
Background technology
Being equipped with fan in most electronic installations, being beneficial to electronic installation can successfully dispel the heat.Traditional
Control method for fan is all by detection electronic component or the ambient temperature of fan circumference, and carries in ambient temperature
Gao Shi, improves the rotating speed of fan in the way of time per unit increases fixed rotating speed.But, if quickly carrying
High radiating effect and make fan in time per unit rotating speed substantial increase, high frequency sound wave can be produced, cause
The sense of discomfort of user；If so avoiding the generation of high frequency sound wave in only trace increases fan time per unit
Rotating speed, can improve the overall antipyretic time, and electronic component may be because of damage that for a long time high heat operates.
Secondly, the method improving the rotating speed of fan in the way of time per unit increases fixed rotating speed, and cannot
It is fixing that rotating speed of target value when to make fan be to reach antipyretic response is exactly that time per unit increases every time
The integral multiple of rotating speed.Therefore, in order to reach rotating speed of target value, then must first allow the rotating speed of fan exceed target
Tachometer value, after providing certain antipyretic ability, more successively reduces fan rotating speed in time per unit
Value, is allowed to successive approximation in rotating speed of target value, the rotation speed of the fan of its correspondence graph of a relation such as Fig. 1 to the time
Shown in.Although such control method for fan can provide antipyretic response, so it reaches the time of rotating speed of target
Long.
Also, traditional control method for fan is only capable of adjusting the rotating speed of fan by temperature, and when in electronic installation
When being simultaneously provided with multiple fan, setting value when just cannot dispatch from the factory for each fan provides the tune of differentiation
Whole, cause the deficiency using upper flexibility ratio.
Summary of the invention
A kind of strong type rotation speed of the fan is provided to regulate and control method according to the present invention, in order to shorten what rotation speed of the fan improved
Time, and high frequency sound wave when overcoming rotation speed of the fan to increase；Additionally, the strong type wind rotating speed of the present invention is adjusted
Prosecutor method is also in order to overcome conventional fan the factory setting value of foundation cannot carry out the problem of regulation and control of differentiation.
The one strong type rotation speed of the fan regulation and control method provided according to the present invention, comprises the steps of: utilize and turn
The rotating speed of speed sensing unit detecting fan, and produce rotation speed of the fan value；Utilize microprocessing unit to rotation speed of the fan
Value and rotating speed of target value compare, and when rotation speed of the fan value and rotating speed of target value are different, make driver element
The first driving signal is exported so that rotation speed of the fan value increases by the in time per unit within first scheduled time
One tachometer value, then exports two driving signal so that rotation speed of the fan value is in per unit within second scheduled time
Increasing by the second tachometer value in time, wherein the first tachometer value is more than the second tachometer value.
The strong type rotation speed of the fan regulation device of the present invention can shorten the time that rotation speed of the fan improves effectively,
And it is avoided that the high frequency sound wave produced when rotation speed of the fan increases, moreover it is possible to enter according to the factory setting value of each fan
The regulation and control of row differentiation, it is possible to provide the flexibility ratio in control.
Accompanying drawing explanation
Fig. 1 is the rotation speed of the fan graph of a relation to the time of prior art；
Fig. 2 is the circuit block diagram of the strong type rotation speed of the fan regulation device of the present invention；
Fig. 3 is the flow chart of the strong type rotation speed of the fan regulation and control method of first embodiment of the invention；
Fig. 4 is the flow chart of the strong type rotation speed of the fan regulation and control method of second embodiment of the invention；And
Fig. 5 show the rotation speed of the fan graph of a relation to the time of the present invention.
Wherein, reference:
10 microprocessing units
12 rotating speed sensing unit
14 driver elements
16 temperature sensing units
18 input blocks
3 fans
L1 the first line segment
L2 the second line segment
S100-S108 strong type rotation speed of the fan regulation and control step
First scheduled time of t1
Second scheduled time of t2
T3 time difference
Detailed description of the invention
The present invention provides a kind of strong type rotation speed of the fan to regulate and control method, and it is first with a rotating speed sensing unit senses
The rotating speed of fan, and produce rotation speed of the fan value.Recycling microprocessing unit is to rotation speed of the fan value and rotating speed of target
Value compares.When rotation speed of the fan value and rotating speed of target value are different, microprocessing unit by driver element in the
In one scheduled time, output the first driving signal, makes rotation speed of the fan value increase by one first turn in time per unit
Speed value, then exports two driving signal within second scheduled time, makes rotation speed of the fan value at time per unit
Interior increase the second tachometer value, the first tachometer value is more than the second tachometer value.
According to foregoing teachings, detailed description of the invention set forth below also coordinates graphic being described in detail.
Coordinate refering to Fig. 2, for the circuit block diagram of the strong type fan regulation and controlling device of the present invention.Strong type wind
Fan regulation device is in order to sense the rotating speed of fan 3, and foundation rotary speed parameter value is to regulate and control the rotating speed of fan 3,
The ambient temperature of aforementioned rotary speed parameter value e.g. fan 3 periphery.Strong type fan regulation and controlling device comprises micro-place
Reason unit 10, rotating speed sensing unit 12, driver element 14, temperature sensing unit 16 and input block 18.
Rotating speed sensing unit 12 is electrically connected at microprocessing unit 10 and fan 3, in order to sense fan 3
Rotating speed, and output speed parameter value is to microprocessing unit 10.Rotating speed sensing unit 12 can be for example by micro-
The internal timing signals of processing unit 10 is to differentiate the fan 3 rotation number of turns in time per unit.
Driver element 14 is electrically connected at microprocessing unit 10 and fan 3.Driver element 14 receives micro-place
The reason control signal that sends of unit 10, and order about fan 3 and dispel the heat with specific rotating speed.Wherein, drive
Moving cell 14 can be for example by pulse width modulation signal to adjust the rotating speed of fan 3.
Temperature sensing unit 16 is electrically connected at microprocessing unit 10, in order to sense the environment of fan 3 periphery
Temperature, and the ambient temperature recorded is converted to speed reference, and (e.g. fan 3 rotation per minute is specific
The number of turns) after be transferred to microprocessing unit 10.Temperature sensing unit 16 can for example, thermal resistor or infrared ray
Temperature sensor.
Input block 18 is electrically connected at microprocessing unit 10, is available for user and inputs target according to use demand
Parameter value, thereby, it is possible to carry out the regulation and control of wind speed differentiation according to the factory setting value of each fan, with
Increase the flexibility ratio on controlling.Input block 18 can be for example keyboard or contact panel.
When practical operation, microprocessing unit 10 can directly receive the target component that input block 18 sends
It is worth, or microprocessing unit 10 can receive temperature sensing unit 16 input speed reference value, then by rotating speed
Reference value is converted to target reference.
Afterwards, microprocessing unit 10 compares rotation speed of the fan value and the target component of rotating speed sensing unit 12 output
Value, and when targeted parameter value and rotation speed of the fan value are different, increase scheme with two-part rotating speed and improve fan 3
Rotating speed.Wherein, two-part rotating speed increases scheme is first to increase by the first rotating speed with time per unit to improve fan
The rotating speed of 3, then increase by the second rotating speed with time per unit and improve the rotating speed of fan 3, and first turn further
Speed is more than the second rotating speed.Thereby, not only can shorten the time that fan 3 rotating speed improves, and be avoided that fan
3 high frequency sound waves produced when speedup.
The strong type fan regulation and controlling device of the present invention can also control multiple fan 3, and each fan 3 simultaneously
All it is electrically connected at driver element 14.When practical operation, user can be with Selection utilization input block 18 pin
The use demand of each fan 3 is inputted targeted parameter value, to carry out the regulation and control of fan 3 rotating speed.But,
User can also select the rotating speed reference that the fan 3 of part provides according to temperature sensing unit 16 on demand
Value carries out the regulation and control of rotating speed, and the targeted parameter value that other part fans 3 input according to input block 18 is carried out
The regulation and control of rotating speed.Certainly, user can also select to make whole fans 3 all defeated according to input block 18
The same targeted parameter value entered carries out the regulation and control of rotating speed, or makes whole fans 3 all according to temperature sensing list
The speed reference that unit 16 provides carries out the regulation and control of rotating speed.
Hereinafter coordinate the strong type fan regulation and controlling side of the flow chart explanation first embodiment of the invention shown in Fig. 3
Method.Strong type fan regulation and controlling method comprises the steps of: first, utilizes input block 18 to produce rotating speed of target
Value (step S100), and it is transferred to microprocessing unit 10.
Then, rotating speed sensing unit 12 is utilized to sense the instant rotation number of turns of fan 3, and can be by contrast
The rotation number of turns of fan 3 and the built-in clock signal of microprocessing unit 10 are to produce rotation speed of the fan value (step
S104), rotary speed parameter value can be transferred to microprocessing unit 10.
Afterwards, rotation speed of the fan value and rotating speed of target value are compared by microprocessing unit 10, and turn in fan
When speed value is different with rotating speed of target value, driver element 14 is made to export the first driving letter within first scheduled time
Number, to allow rotation speed of the fan value increase by the first tachometer value in time per unit.Microprocessing unit 10 also makes to drive
Moving cell 14 exports two driving signal within second scheduled time, makes rotation speed of the fan value at time per unit
Interior increase the second tachometer value, until rotation speed of the fan value equal with rotating speed of target value (step S108).Wherein,
One tachometer value is more than the second tachometer value, and second scheduled time was later than for first scheduled time, and second scheduled time is not
More than first scheduled time, and first drives signal and two driving signal can be respectively pulse width modulation
Signal.Thereby, can effectively reduce fan 3 and carry the high-revolving time, it is also possible to be effectively reduced fan
3 high frequency sound waves produced in increasing Rotation Process.
Hereinafter coordinate the strong type fan regulation and controlling side of the flow chart explanation second embodiment of the invention shown in Fig. 4
Method.First, utilizing temperature sensing unit 16 to produce speed reference (step S102), wherein, rotating speed is joined
Examining value can the ambient temperature of for example, fan 3 periphery.Afterwards, temperature sensing unit 16 is by speed reference
It is transferred to microprocessing unit 10, and is converted to rotating speed of target value (step S106) by microprocessing unit 10.
Then, rotating speed sensing unit 12 can sense the instant rotation number of turns of fan 3, and can be by contrast wind
The rotation number of turns of fan 3 and the built-in clock signal of microprocessing unit 10 are to produce rotation speed of the fan value (step
S104), rotary speed parameter value can be transferred to microprocessing unit 10.
Afterwards, rotation speed of the fan value and rotating speed of target value are compared by microprocessing unit 10, and turn in fan
When speed value is different with rotating speed of target value, driver element 14 is made to export the first driving letter within first scheduled time
Number, to allow rotation speed of the fan value increase by the first tachometer value in time per unit.Microprocessing unit 10 also makes to drive
Moving cell 14 exports two driving signal within second scheduled time, makes rotation speed of the fan value at time per unit
Interior increase the second tachometer value, until rotation speed of the fan value equal with rotating speed of target value (step S108).Wherein,
One tachometer value is more than the second tachometer value, and second scheduled time was later than for first scheduled time, and second scheduled time is not
More than first scheduled time, and first drives signal and two driving signal can be respectively pulse width modulation
Signal.Thereby, can effectively reduce fan 3 and carry the high-revolving time, it is also possible to be effectively reduced fan
3 high frequency sound waves produced in increasing Rotation Process.
Refer to the rotating speed pair that Fig. 5, Fig. 5 show the strong type rotation speed of the fan regulation and control method of the corresponding present invention
Time chart.Wherein, Fig. 5 the first embodiment according to the present invention shown in solid and the second embodiment
The rotation speed of the fan graph of a relation to the time of strong type rotation speed of the fan regulation and control method gained, dotted line show correspondence
The rotation speed of the fan of the prior art fan control wind method gained graph of a relation to the time.
Fig. 5 the first line segment L1 correspondence fan 3 shown in solid rotating speed in the first scheduled time t1；Second
The line segment L2 correspondence fan 3 rotating speed in the second scheduled time t2.From the figure 3, it may be seen that in the first pre-timing
Between in t1 or the second scheduled time t2, the rotating speed of fan 3 all linearly increases.By the first line segment L1 and
The slope differences opposite sex of the second line segment L2 is it is known that fan 3 is in the first scheduled time t1 time per unit
The first tachometer value increased is higher than its second tachometer value increased in the second scheduled time t2.
Additionally, can also be learnt by Fig. 5, in the first scheduled time t1, rotation speed of the fan value and target turn
Rotating speed difference between speed value is more than speed-changing value；At the second scheduled time t2, rotation speed of the fan value and target turn
Rotating speed difference between speed value is not more than speed-changing value.
In other words, microprocessing unit 10 can also by rotation speed of the fan value and rotating speed of target value are compared,
Regulate and control the rotating speed of fan 3.Rotating speed difference in rotation speed of the fan value and rotating speed of target value is more than a speed-changing
During value, microprocessing unit 10 allows driver element 14 export the first driving signal, so that rotation speed of the fan value can be
Increase by the first tachometer value in time per unit, until rotation speed of the fan value is equal with speed-changing value.At speed discrepancy
When value is not more than rotating speed switching value, microprocessing unit 10 allows driver element 14 export two driving signal, with
Rotation speed of the fan value is made to increase by the second tachometer value in time per unit, until rotation speed of the fan value and rotating speed of target value
Equal.
Also, with regard to the solid line depicted in Fig. 5 compared with dotted line, time t3 is that its grade makes rotation speed of the fan solid equally
It is scheduled on the time difference of rotating speed of target value；Thus it is known that the strong type rotation speed of the fan of the present invention regulates and controls method
Really the rotation speed of the fan stable time in rotating speed of target value can effectively be shortened.
To be illustrated at this, the strong type rotation speed of the fan regulation device of the present invention can be respectively by temperature
Degree sensing unit 16 and input block 18 adjust its rotating speed of target value, therefore when practical operation, if user is
Inputting rotating speed of target value by input block 18, the most strong type rotation speed of the fan regulation device can be with temperature sensing
Rotating speed desired value measured by unit 16 is as adjustment of rotational speed condition, and if user is by input block 18
Input rotating speed of target value, the target inputted with input block 18 is turned by the most strong type rotation speed of the fan regulation device
Speed value is as adjustment of rotational speed condition, and is persistently sensed the environment temperature of fan circumference by temperature sensing unit 16
Degree.Microprocessing unit 10 is more than the target of input block 18 then at the rotation speed of the fan value corresponding to ambient temperature
After tachometer value one particular value, reset target with the rotary speed parameter value measured by temperature sensing unit 16 and turn
Speed value, to provide effective antipyretic scheme.
Although the present invention is disclosed above with embodiment, so it is not limited to the present invention, any familiar
The person skilled of this area, without departing from the spirit and scope of the present invention, when making various changes
With retouching, but these change and all should belong to the protection domain of claims of the present invention with retouching.
Claims (9)
1. a strong type rotation speed of the fan regulation and control method, it is characterised in that comprise:
Utilize the rotating speed of a rotating speed sensing unit senses fan, and produce a rotation speed of the fan value；
Utilize a microprocessing unit that this rotation speed of the fan value and a rotating speed of target value are compared；
When this rotation speed of the fan value and this rotating speed of target value are different, this microprocessing unit allows a driver element in one
In first scheduled time, output one first driving signal, makes this rotation speed of the fan value increase by one in time per unit
First tachometer value, then exports a two driving signal within one second scheduled time, makes this rotation speed of the fan value
Increasing by one second tachometer value in time per unit, this first tachometer value is more than this second tachometer value.
Strong type rotation speed of the fan the most as claimed in claim 1 regulation and control method, it is characterised in that further include:
This microprocessing unit determines this rotating speed of target value according to a rotary speed parameter value.
Strong type rotation speed of the fan the most as claimed in claim 2 regulation and control method, it is characterised in that further include:
A temperature sensing unit is utilized to sense this rotary speed parameter value.
Strong type rotation speed of the fan the most as claimed in claim 2 or claim 3 regulation and control method, it is characterised in that should
Rotary speed parameter value is ambient temperature.
Strong type rotation speed of the fan the most as claimed in claim 1 regulation and control method, it is characterised in that further include:
An input block is utilized to input this targeted parameter value.
Strong type rotation speed of the fan the most as claimed in claim 1 regulation and control method, it is characterised in that this is second years old
The scheduled time is not more than this first scheduled time.
Strong type rotation speed of the fan the most as claimed in claim 1 regulation and control method, it is characterised in that this rotating speed
Sensing unit contrasts the rotation number of turns of this fan with a clock signal of this microprocessing unit to produce this fan
Tachometer value.
Strong type rotation speed of the fan the most as claimed in claim 1 regulation and control method, it is characterised in that in this
One rotating speed difference of one scheduled time, this rotation speed of the fan value and this rotating speed of target value is more than a switching tachometer value.
Strong type rotation speed of the fan the most as claimed in claim 8 regulation and control method, it is characterised in that in this
Two scheduled times, this rotating speed difference is not more than this speed-changing value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510371535.4A CN106321480A (en) | 2015-06-30 | 2015-06-30 | Strong regulation and control method for rotational speed of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510371535.4A CN106321480A (en) | 2015-06-30 | 2015-06-30 | Strong regulation and control method for rotational speed of fan |
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| CN106321480A true CN106321480A (en) | 2017-01-11 |
Family
ID=57723003
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| CN201510371535.4A Pending CN106321480A (en) | 2015-06-30 | 2015-06-30 | Strong regulation and control method for rotational speed of fan |
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| CN1699758A (en) * | 2004-05-18 | 2005-11-23 | 精拓科技股份有限公司 | Method and system for intelligent fan speed control |
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Application publication date: 20170111 |