CN101684823B - Controlling device, controlling method and computer for electrical equipment fan - Google Patents
Controlling device, controlling method and computer for electrical equipment fan Download PDFInfo
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- CN101684823B CN101684823B CN2008102226825A CN200810222682A CN101684823B CN 101684823 B CN101684823 B CN 101684823B CN 2008102226825 A CN2008102226825 A CN 2008102226825A CN 200810222682 A CN200810222682 A CN 200810222682A CN 101684823 B CN101684823 B CN 101684823B
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Abstract
The invention provides a controlling device, a controlling method and a computer for an electrical equipment fan, the controlling device comprises a module which is used for getting generated parameters of a first pulse width modulation wave which corresponds to first temperature, the first temperature is the current temperature of an action object of a fan, the first pulse width modulation wave which corresponds to the generated parameters of the first pulse width modulation wave comprises at least two first pulses, pulse width of at least two second pulses in at least two first pulses is different; the controlling device also comprises a module which is used for generating the first pulse width modulation wave according to the generated parameters of the first pulse width modulation wave and a module which is used for sending the first pulse width modulation wave to the fan, variable-speed rotation of the fan is controlled by the module, heat dissipation requirement of the action object under the first temperature is met, and the value of hearing parameter of sound which is generated by the rotation of the fan under the control of each second pulse is different in at least two second pulses. The effect to the hearing of a user when the fan is operated is reduced by the invention.
Description
Technical field
The present invention relates to the electronic equipment dissipating heat technical field, particularly a kind of control gear, controlling method and computer that is used for electrical equipment fan.
Background technique
And a lot of components and parts in the electronic equipment all have certain requirement to the temperature of working environment, and these components and parts only could guarantee normally to work efficiently in other words conj.or perhaps when ambient temperature is lower than uniform temperature.
Yet; In the present electronic equipment, increasing components and parts are integrated into a limited space, and each electronic parts and components all can outwards be launched certain heat in its working state; Therefore; When electronic device works, the temperature of its working space will be significantly higher than extraneous temperature, thereby causes some electronic parts and components to work normally and efficiently.
In order to address the above problem, existing technology adopts the type of cooling that electronic parts and components are dispelled the heat, and in these types of cooling, comprises air cooling way, and air cooling way is walked hot air through the rotating band of fan, realizes heat radiation.
The inventor finds that there is following problem at least in existing technology in realizing process of the present invention:
Under the air cooling way, the noise that fan produces becomes noise source main, maximum in the electronic equipment, has brought puzzlement acoustically to the user.
The noise of fan mainly is the friction when rotating the distinguished and admirable and bearing rotation that produces from flabellum.Along with fan structure, matter material, the improvement of aspects such as bearing; The noisiness of fan has obtained bigger reduction, yet, no matter how improve; Fan is when running up, and the noise of its generation is still bigger, has greatly influenced the impression of user's use electronic equipment.
Summary of the invention
The purpose of the embodiment of the invention provides a kind of control gear, controlling method and computer that is used for electrical equipment fan, and the sound that produces when reducing fan running is to the stimulation of user's sense of hearing.
To achieve these goals, the embodiment of the invention provides a kind of control gear that is used for electrical equipment fan, comprising:
Parameter acquisition module; Be used to obtain the first pulse duration modulation ripple corresponding and generate parameter with first temperature; Said first temperature is the Current Temperatures of the effective object of said electrical equipment fan; The said first pulse duration modulation ripple generates the first corresponding pulse duration modulation ripple of parameter and includes at least two first pulses, has the pulse width of at least two second pulses different in said at least two first pulses;
Pulse duration modulation ripple generation module is used for generating parameter according to the said first pulse duration modulation ripple and generates the said first pulse duration modulation ripple;
Transmitting module; Be used for the said first pulse duration modulation ripple is sent to said electrical equipment fan; Controlling said electrical equipment fan speed change rotates; Satisfy the heat radiation requirement of said effective object under said first temperature, and in said at least two second pulses, the value difference of the sense of hearing parameter of the sound that each said second pulse control said electrical equipment fan down produces when rotating.
Above-mentioned control gear wherein, also comprises:
Judge module is used for according to judging that parameter judges whether preset trigger condition is set up, and obtains a triggering judged result;
Start module, be used for when said triggering judged result indicates said preset trigger condition to set up, starting said parameter acquisition module.
Above-mentioned control gear, wherein, said judgement parameter is: said Current Temperatures and/or the current rotating speed of said fan and/or said fan current volume.
Above-mentioned control gear, wherein, said parameter acquisition module specifically comprises:
Storage unit is used for memory action object temperature and predetermined pulse width modulated ripple and generates the corresponding relation between the parameter;
Matching unit is used for more said Current Temperatures and said effective object temperature, from the said effective object temperature of preserving in advance, obtains the first effective object temperature with said Current Temperatures coupling;
Acquiring unit is used for generating the corresponding relation between the parameter according to said effective object temperature and predetermined pulse width modulated ripple, obtains the said first pulse duration modulation ripple corresponding with the said first effective object temperature and generates parameter.
Above-mentioned control gear, wherein, the effective object temperature that said effective object temperature and predetermined pulse width modulated ripple generate in the corresponding relation between the parameter is a temperature range.
To achieve these goals, the embodiment of the invention also provides a kind of controlling method that is used for electrical equipment fan, wherein, comprising:
Obtain the Current Temperatures of the effective object of said electrical equipment fan;
Obtain the first corresponding pulse duration modulation ripple of said Current Temperatures and generate parameter; The said first pulse duration modulation ripple generates the first corresponding pulse duration modulation ripple of parameter and comprises at least two first pulses, has the pulse width of at least two second pulses different in said at least two first pulses;
Generate parameter according to the said first pulse duration modulation ripple and generate the said first pulse duration modulation ripple;
The said first pulse duration modulation ripple is sent to said electrical equipment fan, control said electrical equipment fan speed change and rotate, satisfy the heat radiation requirement of said effective object under said Current Temperatures;
In said at least two second pulses, the value of the sense of hearing parameter of the sound that the said electrical equipment fan under each said second pulse control produces when rotating is different.
Above-mentioned method wherein, also comprises:
Judge that according to judging parameter whether preset trigger condition is set up, and obtains one and triggers judged result;
When said triggering judged result indicates said preset trigger condition to set up, get into the said step that the first corresponding pulse duration modulation ripple of said Current Temperatures generates parameter of obtaining.
Above-mentioned method, wherein, said judgement parameter is: said Current Temperatures and/or the current rotating speed of said fan and/or said fan current volume.
Above-mentioned method, wherein, the said step of obtaining the first corresponding pulse width modulated waveform of said Current Temperatures specifically comprises:
More said Current Temperatures and the effective object temperature of preserving are in advance obtained the first effective object temperature with said Current Temperatures coupling from said effective object temperature;
Generate the corresponding relation between the parameter according to said effective object temperature and predetermined pulse width modulated ripple, obtain the said first pulse duration modulation ripple corresponding and generate parameter with the said first effective object temperature.
Above-mentioned method, wherein, the effective object temperature in the corresponding relation between said effective object temperature and the predetermined pulse width modulated waveform is a temperature range.
To achieve these goals, the embodiment of the invention also provides a kind of computer, comprises mainboard, and said mainboard is provided with to be treated heat dissipation element and be used for the said heat dissipation element of treating is carried out the fan of wind-cooling heat dissipating, it is characterized in that, also is provided with on the said mainboard:
Temperature transducer is used to obtain the said Current Temperatures of treating heat dissipation element;
Parameter acquisition module; Be used to obtain the first pulse duration modulation ripple corresponding and generate parameter with said Current Temperatures; The said first pulse duration modulation ripple generates the first corresponding pulse duration modulation ripple of parameter and includes at least two first pulses, has the pulse width of at least two second pulses different in said at least two first pulses;
Pulse duration modulation ripple generation module is used for generating parameter according to the said first pulse duration modulation ripple and generates the said first pulse duration modulation ripple;
Transmitting module is used for the said first pulse duration modulation ripple is sent to said fan, controls said fan speed change and rotates, and satisfies the said heat radiation requirement of heat dissipation element under said Current Temperatures of treating;
In said at least two second pulses, the value of the sense of hearing parameter of the sound that the said fan under each said second pulse control produces when rotating is different.
Above-mentioned computer wherein, also comprises:
Judge module is used for according to judging that parameter judges whether preset trigger condition is set up, and obtains a triggering judged result;
Start module, be used for when said triggering judged result indicates said preset trigger condition to set up, starting said parameter acquisition module.
Above-mentioned computer, wherein, said judgement parameter is: said Current Temperatures and/or the current rotating speed of said fan and/or said fan current volume.
Above-mentioned computer, wherein, said pulse width modulated waveform acquisition module specifically comprises:
Storage unit is used for memory action object temperature and predetermined pulse width modulated ripple and generates the corresponding relation between the parameter;
Matching unit is used for more said Current Temperatures and said effective object temperature, from the said effective object temperature of preserving in advance, obtains the first effective object temperature with said Current Temperatures coupling;
Acquiring unit is used for according to the corresponding relation between said effective object temperature and the predetermined pulse width modulated waveform, obtains the said first pulse duration modulation ripple corresponding with the said first effective object temperature and generates parameter.
Above-mentioned computer, wherein, the effective object temperature in the corresponding relation between said effective object temperature and the predetermined pulse width modulated waveform is a temperature range.
The embodiment of the invention has following beneficial effect:
The control gear that is used for electrical equipment fan, controlling method and the computer of the embodiment of the invention; The waveform that is used for PWM (the Pulse Width Modulation) ripple of drive fan, the pulse width of at least two pulses is different, under the driving of the PWM of this specific waveforms ripple; Electrical equipment fan can satisfy the requirement of heat radiation; Owing in the waveform of PWM (Pulse Width Modulation) ripple, the pulse width of at least two pulses is different simultaneously, so the fan rotation is that speed change is rotated; Can have certain rhythm or rhythm, when having reduced fan running to the influence of user's sense of hearing.
Description of drawings
Fig. 1 is the structural representation of the control gear that is used for electrical equipment fan of the embodiment of the invention;
Fig. 2 is the schematic flow sheet of the controlling method that is used for electrical equipment fan of the embodiment of the invention;
Fig. 3 is the various possible PWM waveform that is used for drive fan and the comparison diagram that is used for the PWM waveform of drive fan of the prior art of the embodiment of the invention.
Embodiment
The control gear that is used for electrical equipment fan, controlling method and the computer of the embodiment of the invention; Control is used for the waveform of PWM (the Pulse Width Modulation) ripple of drive fan; Under the driving of the PWM of this specific waveforms ripple; Electrical equipment fan can satisfy the requirement of heat radiation, and simultaneously electrical equipment fan rotates the sound that sends and has certain rhythm or rhythm, when having reduced fan running to the influence of user's sense of hearing.
The control gear that is used for electrical equipment fan of the embodiment of the invention is as shown in Figure 1, comprising:
Temperature transducer is used to obtain the Current Temperatures of the effective object of said electrical equipment fan; Yet this temperature transducer can not be the part of control gear also, can be arranged at the control gear outside, for it provides temperature parameter.
Parameter acquisition module; Be used to obtain the first pulse duration modulation ripple corresponding and generate parameter with first temperature; Said first temperature is the Current Temperatures of the effective object of said electrical equipment fan; The said first pulse duration modulation ripple generates the first corresponding pulse duration modulation ripple of parameter and includes at least two first pulses, has the pulse width of at least two second pulses different in said at least two first pulses;
PWM ripple generation module is used for generating parameter according to the said first pulse duration modulation ripple and generates a said PWM ripple;
Transmitting module; Be used for a said PWM ripple is sent to said electrical equipment fan; Controlling said electrical equipment fan speed change rotates; Satisfy the heat radiation requirement of said effective object under said Current Temperatures, in while said at least two second pulses, the value of the sense of hearing parameter of the sound that the said electrical equipment fan under each said second pulse control produces when rotating is different.
In specific embodiment of the present invention, this sense of hearing parameter can be volume, scale etc.
The control gear that is used for electrical equipment fan in the specific embodiment of the present invention can be used to control electrical equipment fan separately; Also can combine and realize control electrical equipment fan with the control gear of the electrical equipment fan of existing technology; Must need this moment the control gear of the control embodiment of the invention when to launch; Therefore, the control gear that is used for electrical equipment fan of the embodiment of the invention also comprises:
Judge module is used for according to judging that parameter judges whether preset trigger condition is set up, and obtains a triggering judged result;
Start module, be used for when said triggering judged result indicates said preset trigger condition to set up, starting said parameter acquisition module.
In general; The noise that the control module of existing electrical equipment fan is produced under the lower situation of rotating speed is lower, and is less to the influence of user's sense of hearing, and can not adopt the device of the embodiment of the invention this moment; Therefore; The device of the embodiment of the invention can only just adopt the device of the embodiment of the invention to control when rotation speed of the fan is higher than a predetermined value, and rotation speed of the fan can be through self, the Current Temperatures of effective object and the factors such as noise that fan running sends confirm, therefore; In specific embodiment of the present invention, this judge module can judge whether preset trigger condition is set up according to following parameter:
The Current Temperatures of effective object (Current Temperatures of effective object is big more, shows that the rotation speed of the fan of needs is high more); And/or
The current rotating speed of fan; And/or
The fan current volume, the sound that just sends size (it is big more to sound, and shows that rotating speed is high more).
The controlling method that is used for electrical equipment fan of the embodiment of the invention is as shown in Figure 2, comprising:
According to above-mentioned description, in specific embodiment of the present invention, in a certain temperature; Owing to drive the pwm pulse that the PWM ripple of this electrical equipment fan has different pulse widths; Therefore under this temperature, fan can be done speed change and rotate, so the flabellum of fan rotates the sound that the friction of the distinguished and admirable and bearing that produces when rotating send and can have certain rule; Can form the sound of the specific rhythm or rhythm, the sound that produces when reducing fan running greatly is to the stimulation of user's sense of hearing.
In specific embodiment of the present invention, the fan that a PWM ripple drives need satisfy certain condition, and is as follows:
At first, the fan under this PWM ripple control can satisfy the heat radiation requirement of effective object under said Current Temperatures;
The sound that sends when secondly, the fan under this PWM ripple control is done the speed change rotation has certain rhythm or rhythm (value of the sense of hearing parameter of the sound that produces when electrical equipment fan rotates is different)
Consider that two above-mentioned conditions are all directly related with the rotating speed of fan; And the rotating speed of fan is directly related with the pulse width of the pwm pulse of drive fan; Therefore, above-mentioned condition finally is converted into this parameter of pulse width of confirming the pwm pulse in the PWM ripple.
In the subsequent descriptions of specific embodiment of the present invention, this parameter of pulse width is embodied with oscillogram intuitively.
In specific embodiment of the present invention, can confirm that first kind of implementation specifies as follows through the mode of off-line:
Basically, fan is converted into mechanical energy with electric energy, and drive air flows; If the energy that the unit time internal fan consumes is identical; Then driven air is basic identical, also just possesses essentially identical refrigerating capacity, therefore; Utilize the electric energy of fan consumption to carry out judgement under first kind of implementation, process is described below:
When obtaining fan of the prior art and satisfying the heat radiation of effective object under first temperature and require, the benchmark electric energy that is consumed in the unit time;
Generation is corresponding to a plurality of PWM waveforms of first temperature; In the said PWM waveform; The pulse width of at least two pulses is different, and is as shown in Figure 3, is the waveform schematic representation of several kinds the one PWM; Uppermost waveform is the waveform of PWM ripple of control fan in the existing technology among Fig. 3, and following waveform schematic representation for several kinds of possible PWM enumerating;
Utilize each the PWM Waveform Control fan that generates to rotate, obtain the test electric energy that is consumed in the fan unit time;
From a PWM waveform that generates, delete the PWM waveform of those test electric energy at last less than the benchmark electric energy.
At this moment, the PWM ripple with remaining said PWM waveform goes drive fan, just can satisfy the heat radiation requirement under first temperature.
Second kind of implementation specifies as follows:
Basically, the fans drive air flow if the amount of unit time internal fan driven air is identical, also just possesses essentially identical refrigerating capacity, therefore, utilizes fan to agitate the volume of air to carry out judgement under second kind of implementation, and process is described below:
When obtaining fan of the prior art and satisfying the heat radiation of effective object under first temperature and require, the base volume of the air that the unit time internal fan is agitated;
Generation is corresponding to a plurality of PWM waveforms of first temperature, and in the said PWM waveform, the pulse width of at least two pulses is different;
Utilize each the PWM Waveform Control fan that generates to rotate, obtain the test volume of the air of being agitated in the fan unit time;
From a PWM waveform that generates, delete the PWM waveform of those test volume at last less than base volume.
At this moment, the PWM ripple with remaining said PWM waveform goes drive fan, just can satisfy the heat radiation requirement under first temperature.
The third implementation specifies as follows:
If the mean speed of unit time internal fan is identical, its refrigerating capacity is also basic identical, and pwm pulse is a kind of have the fixed cycle (T), the digital signal of EDM Generator of Adjustable Duty Ratio.The rotating speed adjustment of fan is exactly recently to change average voltage through the duty of controlling pwm signal, reaches the purpose that changes motor speed.Therefore, under the third implementation, utilize the pulse width of pwm pulse to carry out judgement, process is described below:
When obtaining fan of the prior art and satisfying the heat radiation of effective object under first temperature and require, the reference pulse width sum of the pulse of the PWM ripple of output in the unit time;
Generation is corresponding to a plurality of PWM waveforms of first temperature, and in the said PWM waveform, the pulse width of at least two pulses is different, and obtains the test pulse width sum of the pulse in the unit time in each PWM waveform;
From a PWM waveform that generates, delete the PWM waveform of those examination pulse width sums at last less than reference pulse width sum.
At this moment, the PWM ripple with remaining said PWM waveform goes drive fan, just can satisfy the heat radiation requirement under first temperature.
Fan under the one PWM Waveform Control that can guarantee to be left through above method can satisfy the heat radiation requirement of the effective object under first temperature.
Confirm that through above-mentioned process the fan under the remaining PWM Waveform Control can satisfy the heat radiation requirement of the effective object under first temperature; Whether the sound that also need test the fan rotation under a remaining PWM Waveform Control this moment can have certain rhythm or rhythm; The work of this part can be described below through manually realization:
Utilize the PWM ripple control fan of a remaining PWM waveform to rotate, a pairing PWM waveform gets final product when therefrom selecting the sound of fan rotation to have certain rhythm or rhythm by the user.
Certainly, also can gather fan and rotate the sound that sends, utilize certain criterion to carry out computer and select automatically.
Through above-mentioned complete process, the embodiment of the invention can be set up following corresponding relation:
| The effective object temperature | The PWM waveform |
| Temperature 1 | Waveform 1 |
| Temperature 2 | Waveform 2 |
| Temperature 3 | Waveform 3 |
| ...... | ...... |
| Temperature n | Waveform n |
Therefore, the PWM waveform acquisition module of the specific embodiment of the invention specifically comprises:
Storage unit is used for the corresponding relation between memory action object temperature and the preset PWM waveform (generating parameter corresponding to the PWM ripple), and in the said preset PWM waveform, the pulse width of at least two pulses is different;
Matching unit is used for more said Current Temperatures and said effective object temperature, from said said effective object temperature of preserving in advance, obtains the first effective object temperature with said Current Temperatures coupling;
Acquiring unit is used for according to the corresponding relation between said effective object temperature and the preset PWM waveform, obtains a said PWM waveform corresponding with the said first effective object temperature.
In specific embodiment of the present invention, consider sometimes to exist temperature variation faster under the situation that the effective object temperature is a temperature range in therefore above-mentioned effective object temperature and the corresponding relation between the preset PWM waveform, and is as follows:
| The effective object temperature | The PWM waveform |
| Temperature 1～temperature 2 | Waveform 1 |
| Temperature 2～temperature 3 | Waveform 2 |
| Temperature 3～temperature 4 | Waveform 3 |
| ...... | ...... |
| Temperature n-1～temperature n | Waveform n |
Certainly, the big I of this temperature range is set as required.
When serviceability temperature was interval, in the mode of the pulse width of the pwm pulse in 3 kinds of definite PWM ripples that the front is introduced, this first temperature was interval maximum temperature, and other aspects are identical, no longer are repeated in this description at this.
Under the situation of temperature range, very fast even Current Temperatures changes, the driving PWM ripple of fan can not change yet, so the sound that fan sends also can maintain on a metastable rhythm and the rhythm, helps reducing the interference to user's hearing.
The computer of the embodiment of the invention comprises mainboard, and said mainboard is provided with to be treated heat dissipation element and be used for the said heat dissipation element of treating is carried out the fan of wind-cooling heat dissipating, wherein, also comprises:
Temperature transducer is used to obtain the said Current Temperatures of treating heat dissipation element;
Parameter acquisition module; Be used to obtain the first pulse duration modulation ripple corresponding and generate parameter with said Current Temperatures; The said first pulse duration modulation ripple generates the first corresponding pulse duration modulation ripple of parameter and includes at least two first pulses, has the pulse width of at least two second pulses different in said at least two first pulses;
PWM ripple generation module is used to generate a said PWM ripple;
Transmitting module; Be used for a said PWM ripple is sent to said fan; Controlling said fan speed change rotates; Satisfy the said heat radiation requirement of heat dissipation element under said Current Temperatures of treating, in while said at least two second pulses, the value of the sense of hearing parameter of the sound that the said fan under each said second pulse control produces when rotating is different.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (15)
1. a control gear that is used for electrical equipment fan is characterized in that, comprising:
Parameter acquisition module; Be used to obtain the first pulse duration modulation ripple corresponding and generate parameter with first temperature; Said first temperature is the Current Temperatures of the effective object of said electrical equipment fan; The said first pulse duration modulation ripple generates the first corresponding pulse duration modulation ripple of parameter and includes at least two first pulses, has the pulse width of at least two second pulses different in said at least two first pulses;
Pulse duration modulation ripple generation module is used for generating parameter according to the said first pulse duration modulation ripple and generates the said first pulse duration modulation ripple;
Transmitting module; Be used for the said first pulse duration modulation ripple is sent to said electrical equipment fan; Controlling said electrical equipment fan speed change rotates; Satisfy the heat radiation requirement of said effective object under said first temperature, and in said at least two second pulses, the value difference of the sense of hearing parameter of the sound that each said second pulse control said electrical equipment fan down produces when rotating.
2. control gear according to claim 1 is characterized in that, also comprises:
Judge module is used for according to judging that parameter judges whether preset trigger condition is set up, and obtains a triggering judged result;
Start module, be used for when said triggering judged result indicates said preset trigger condition to set up, starting said parameter acquisition module.
3. control gear according to claim 2 is characterized in that, said judgement parameter is: said Current Temperatures and/or the current rotating speed of said fan and/or said fan current volume.
4. control gear according to claim 1 is characterized in that, said parameter acquisition module specifically comprises:
Storage unit is used for memory action object temperature and predetermined pulse width modulated ripple and generates the corresponding relation between the parameter;
Matching unit is used for more said Current Temperatures and said effective object temperature, from the said effective object temperature of preserving in advance, obtains the first effective object temperature with said Current Temperatures coupling;
Acquiring unit is used for generating the corresponding relation between the parameter according to said effective object temperature and predetermined pulse width modulated ripple, obtains the said first pulse duration modulation ripple corresponding with the said first effective object temperature and generates parameter.
5. control gear according to claim 4 is characterized in that, the effective object temperature that said effective object temperature and predetermined pulse width modulated ripple generate in the corresponding relation between the parameter is a temperature range.
6. a controlling method that is used for electrical equipment fan is characterized in that, comprising:
Step 21 is obtained the Current Temperatures of the effective object of said electrical equipment fan;
Step 22; Obtain the first corresponding pulse duration modulation ripple of said Current Temperatures and generate parameter; The said first pulse duration modulation ripple generates the first corresponding pulse duration modulation ripple of parameter and comprises at least two first pulses, has the pulse width of at least two second pulses different in said at least two first pulses;
Step 23 generates parameter according to the said first pulse duration modulation ripple and generates the said first pulse duration modulation ripple;
Step 24 sends to said electrical equipment fan with the said first pulse duration modulation ripple, controls said electrical equipment fan speed change and rotates, and satisfies the heat radiation requirement of said effective object under said Current Temperatures;
In said at least two second pulses, the value of the sense of hearing parameter of the sound that the said electrical equipment fan under each said second pulse control produces when rotating is different.
7. method according to claim 6 is characterized in that, also comprises:
Judge that according to judging parameter whether preset trigger condition is set up, and obtains one and triggers judged result;
When said triggering judged result indicates said preset trigger condition to set up, get into the said step that the first corresponding pulse duration modulation ripple of said Current Temperatures generates parameter of obtaining.
8. method according to claim 7 is characterized in that, said judgement parameter is: said Current Temperatures and/or the current rotating speed of said fan and/or said fan current volume.
9. method according to claim 6 is characterized in that, the said step of obtaining the first corresponding pulse width modulated waveform of said Current Temperatures specifically comprises:
More said Current Temperatures and the effective object temperature of preserving are in advance obtained the first effective object temperature with said Current Temperatures coupling from said effective object temperature;
Generate the corresponding relation between the parameter according to said effective object temperature and predetermined pulse width modulated ripple, obtain the said first pulse duration modulation ripple corresponding and generate parameter with the said first effective object temperature.
10. method according to claim 9 is characterized in that, the effective object temperature in the corresponding relation between said effective object temperature and the predetermined pulse width modulated waveform is a temperature range.
11. a computer comprises mainboard, said mainboard is provided with to be treated heat dissipation element and is used for the said heat dissipation element of treating is carried out the fan of wind-cooling heat dissipating, it is characterized in that, also is provided with on the said mainboard:
Temperature transducer is used to obtain the said Current Temperatures of treating heat dissipation element;
Parameter acquisition module; Be used to obtain the first pulse duration modulation ripple corresponding and generate parameter with said Current Temperatures; The said first pulse duration modulation ripple generates the first corresponding pulse duration modulation ripple of parameter and includes at least two first pulses, has the pulse width of at least two second pulses different in said at least two first pulses;
Pulse duration modulation ripple generation module is used for generating parameter according to the said first pulse duration modulation ripple and generates the said first pulse duration modulation ripple;
Transmitting module is used for the said first pulse duration modulation ripple is sent to said fan, controls said fan speed change and rotates, and satisfies the said heat radiation requirement of heat dissipation element under said Current Temperatures of treating;
In said at least two second pulses, the value of the sense of hearing parameter of the sound that the said fan under each said second pulse control produces when rotating is different.
12. computer according to claim 11 is characterized in that, also comprises:
Judge module is used for according to judging that parameter judges whether preset trigger condition is set up, and obtains a triggering judged result;
Start module, be used for when said triggering judged result indicates said preset trigger condition to set up, starting said parameter acquisition module.
13. computer according to claim 12 is characterized in that, said judgement parameter is: said Current Temperatures and/or the current rotating speed of said fan and/or said fan current volume.
14. computer according to claim 11 is characterized in that, said pulse width modulated waveform acquisition module specifically comprises:
Storage unit is used for memory action object temperature and predetermined pulse width modulated ripple and generates the corresponding relation between the parameter;
Matching unit is used for more said Current Temperatures and said effective object temperature, from the said effective object temperature of preserving in advance, obtains the first effective object temperature with said Current Temperatures coupling;
Acquiring unit is used for according to the corresponding relation between said effective object temperature and the predetermined pulse width modulated waveform, obtains the said first pulse duration modulation ripple corresponding with the said first effective object temperature and generates parameter.
15. computer according to claim 14 is characterized in that, the effective object temperature in the corresponding relation between said effective object temperature and the predetermined pulse width modulated waveform is a temperature range.
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| CN2008102226825A CN101684823B (en) | 2008-09-22 | 2008-09-22 | Controlling device, controlling method and computer for electrical equipment fan |
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|---|---|---|---|
| CN2008102226825A CN101684823B (en) | 2008-09-22 | 2008-09-22 | Controlling device, controlling method and computer for electrical equipment fan |
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| CN102900688A (en) * | 2011-07-26 | 2013-01-30 | 技嘉科技股份有限公司 | Method and device for controlling rotating speed of fan |
| CN104597999B (en) * | 2015-02-12 | 2017-10-13 | 浪潮集团有限公司 | A kind of heat dissipating method and device |
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| CN1577218A (en) * | 2003-07-14 | 2005-02-09 | Lg电子株式会社 | Apparatus and method for controlling fan drive in computer system |
| CN1657787A (en) * | 2004-02-21 | 2005-08-24 | 华为技术有限公司 | Method and device for controlling fan speed |
| CN2888141Y (en) * | 2005-07-22 | 2007-04-11 | 富准精密工业(深圳)有限公司 | Fan employing pulse width modulation to control rotation speed |
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2008
- 2008-09-22 CN CN2008102226825A patent/CN101684823B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1577218A (en) * | 2003-07-14 | 2005-02-09 | Lg电子株式会社 | Apparatus and method for controlling fan drive in computer system |
| CN1577201A (en) * | 2003-07-28 | 2005-02-09 | 华为技术有限公司 | Fan rotating speed controlling method and apparatus |
| CN1657787A (en) * | 2004-02-21 | 2005-08-24 | 华为技术有限公司 | Method and device for controlling fan speed |
| CN2888141Y (en) * | 2005-07-22 | 2007-04-11 | 富准精密工业(深圳)有限公司 | Fan employing pulse width modulation to control rotation speed |
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| CN101684823A (en) | 2010-03-31 |
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