CN102900688A - Device and method for controlling rotation speed of fans - Google Patents
Device and method for controlling rotation speed of fans Download PDFInfo
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- CN102900688A CN102900688A CN2011102103047A CN201110210304A CN102900688A CN 102900688 A CN102900688 A CN 102900688A CN 2011102103047 A CN2011102103047 A CN 2011102103047A CN 201110210304 A CN201110210304 A CN 201110210304A CN 102900688 A CN102900688 A CN 102900688A
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- fan
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Abstract
A device for controlling rotation speed of fans is used for a plurality of fans of an electronic device and comprises a detection unit and a controller. The controller is electrically connected with the detection unit and the fans, and the detection unit constantly detects operating temperature of the electronic device and dynamically generates corresponding temperature values to the controller. A default value is set up in the controller according to the operating audio frequency and efficacy of each fan, and the controller compares the received temperature values with the default value set up by the controller to generate a plurality of control signals and transmits the control signals to each fan, and consequently dynamic adjustment of the rotation speed of each fan according to the control signals can be completed.
Description
[technical field]
The present invention is about a kind of method for controlling number of revolution and device thereof of fan, and is particularly a kind of according to the operating temperature of electronic equipment and method for controlling number of revolution and the device thereof of dynamic adjustment rotation speed of the fan.
[background technique]
Along with fast development and the progress of electronics technology, the heating value of electronic equipment improves constantly, and then electronic equipment just must have fan to be dispelled the heat.Present modal fan cooling mode, be with the rotating speed of fan at full speed drive manner dispel the heat.
Owing in order to the fan of full-speed operation, start along with the start of electronic equipment, and until the shutdown of electronic equipment and shutting down.During the start of electronic equipment, fan all is to keep 100% full-speed operation state, under the rotation speed of the fan long time running, the fan internal component is excessively used for a long time, very big noise can occur when causing fan running, for the user, it uses the working environment of electronic equipment also uncomfortable.
Although fan can reach purpose and the usefulness of heat radiation under the full-speed operation state, but under the time of accumulating over a long period, except causing power loss, reducing the working life of fan and the noise that produces that turns round, also might cause the loss of electronic equipment indirect.
When rotation speed of the fan remains under the non-full-speed operation state of 10%-90%, though this state can reach purpose and the effect that reduces noise, but can't reach immediately the usefulness of radiating and cooling, so will cause the operating temperature of electronic equipment too high, and can be not good because of heat dissipation in long-time running, and cause overheated or when the situation of machine.
Although, also have on the market at present intelligent fan can along with the temperature of electronic equipment reaching the effect that changes rotating speed,, each fan in this intelligent fan is all with rotation speed change similarly.
Therefore, how to provide a kind of fan rotational frequency control method and device that overcomes the prior art shortcoming, the real present problem extremely to be solved of dealer that has become association area.
[summary of the invention]
In view of above problem, the invention provides a kind of method for controlling number of revolution and device thereof of fan, use to solve and commonly use fan and only can select simultaneously full-speed operation or reduce simultaneously the problem that rotating speed is controlled the rotating speed of whole fans.
The revolution speed control device of fan of the present invention, for a plurality of fans of an electronic equipment, revolution speed control device comprises a detecting unit and a controller.Wherein, detecting unit continues the operating temperature of detecting electronic equipment, and the temperature value of detecting unit Dynamic Generation one correspondence.Controller is set up a default value, default value is distinctly set up according to the running audio frequency of fan, and controller is electrically connected detecting unit and fan, controller receives temperature signal and produces a plurality of control signals, and each fan receives the control signal, and rotating speed is dynamically adjusted in corresponding generation one according to controlling signal.
The method for controlling number of revolution of fan of the present invention, its step at first continue the operating temperature of detecting electronic equipment, and temperature value corresponding to detecting unit Dynamic Generation.And, set up a default value in controller, default value is set up according to the running audio frequency of each fan.Then, detecting unit continues to transmit temperature value to controller, make a plurality of control signals of the corresponding generation of temperature value of the default value comparison detecting unit of controller, each control signal is sent to each fan and makes fan according to the corresponding dynamically adjustment rotating speed that produces of this control signal.
Effect of the present invention is, sees through the dynamic rotating speed of adjusting and controls fan, produces dynamic adjustment rotating speed via temperature change.Operating temperature according to different time produces different rotating speeds, and can prolong life-span of fan, also can be because Dynamic Speed improve noise problem, and then reach the optimal balance point of radiating effect and level of noise, make electronic equipment of the present invention have the advantage of the generation of good heat dissipation and low noise concurrently.
About feature of the present invention, implementation and effect, hereby cooperate graphicly to be described in detail as follows as most preferred embodiment.
[description of drawings]
Fig. 1 is the schematic representation of one embodiment of the invention.
Fig. 2 a is the flow chart of steps of one embodiment of the invention.
Fig. 2 b is the flow chart of steps of operating temperature of the detecting electronic equipment of one embodiment of the invention.
Fig. 2 c is the flow chart of steps that the controller of one embodiment of the invention produces the control signal.
The primary clustering symbol description:
310 electronic equipments
610 detecting units
410 fans
411 fans
412 fans
710 controllers
510 revolution speed control devices
[embodiment]
Please refer to one embodiment of the invention schematic representation shown in Figure 1, and Fig. 2 a to Fig. 2 c is depicted as the flow chart of steps of the embodiment of the invention.The revolution speed control device 510 of the embodiment of the invention is used for the three fan 410,411 of an electronic equipment 310,412 rotating speed control, the right person that is familiar with the technique, can be according to actual user demand or design requirement and quantity and the putting position of corresponding increase and decrease fan are not limited with the disclosed embodiment of the present invention.。
Shown in Fig. 1 to Fig. 2 c, the revolution speed control device 510 of present embodiment includes a detecting unit 610 and a controller 710.The revolution speed control device 510 of present embodiment includes a detecting unit 610 and a controller 710.When electronic equipment 310 started, in step 110, detecting unit 610 started simultaneously or accordingly detecting and continues the operating temperature of detecting electronic equipment 310, and temperature signal corresponding to detecting unit 610 Dynamic Generations.Specifically, in step 1101, detecting unit 610 is to detect electronic equipment 310 in the operating temperature of different time, and can be in step 1102, according to the operating temperature Dynamic Generation temperature value of different time.
See also Fig. 1 to Fig. 2 c, controller 710 is set up a default value, and its default value is set up (step 111) according to three fan 410,411,412 running audio frequency and usefulness.Wherein, controller 710 is electrically connected at detecting unit 610 and three fan 410,411,412, and carries out step 112 and receive temperature value and its default value with controller 710 is compared, and signals are controlled in three of generation.
Specifically, not only setting up in the controller has default value, also can store a plurality of control signals in step 1121; In the step 1122, the temperature value of detecting unit continues to be sent to controller 710, at this moment, the default value of controller 710 can be compared with the temperature value of detecting unit and corresponding generation three control signals, step 113 makes three fan 410,411,412 generations correspond respectively to the dynamic adjustment rotating speed of this three control signal.
Above-described embodiment, continue the operating temperature that detecting electronic equipment 310 produces at different time via detecting unit 610, detecting unit 610 is because producing different temperature values and being sent to controller 710, this Time Controller 710 can produce three control signals and be sent to three fan 410,411,412, and this three fan 410,411,412 can be because of the received different rotating speed of the corresponding generation of three control signals, see through and dynamically adjust three fan 410,411,412 different rotating speeds, reach the optimal balance point of heat dissipation and noise to reach the rotating speed of adjusting each fan, and improve simultaneously fan and turn round in goodization mode.It should be noted that three fan 410,411, the 412 dynamic adjustment rotating speeds according to the corresponding generation of control signal institute, its numerical value can be same rotational speed, or dynamic adjustment rotating speed that can each fan is different rotating speeds, is not limited with present embodiment.
Default value from the above mentioned is to set up according to required/design number of fans, does not limit the method for setting up/obtain default value at this, and relatively, the required number of fans of electronic equipment then arranges according to reaching optimum temperature usefulness, does not also limit at this.
Following experiment test is the explanation in order to auxiliary above-described embodiment, this is tested three fan 410,411,412 actual test is set in electronic equipment, use obtain when three fan 410,411,412 is different rotating speeds respectively produce respectively the laboratory data of different noises.In the experiment, when fan 410 reaches Dynamic Speed 40%, fan 411 and reaches Dynamic Speed 60% and reach Dynamic Speed 40% with fan 412, measured level of noise is minimum (23.5dBA), but this fan 410,411,412 is under this Dynamic Speed, and its heat dissipation is all 90 ℃.
Via the resulting three fan 410 of experiment, 411,412 Dynamic Speed, in the data of table one, be the measured better level of noise of this experiment, then the data area of extremely high noisy value: the 34.8dBA of measured minimum level of noise: 23.5dBA in the laboratory data set for default value.This noise default value is built in the controller 710, at this moment, controller 710 will be detected the operating temperature of electronic equipment 310 and dynamically control three fan 410,411,412 rotating speed according to detecting unit, according to the measured three fan 410 of experiment, 411, the 412 resulting better level of noise of different rotating speeds and the heat dissipation parameters (such as table one) that produce, the rotating speed when making fan running can be in the level of noise scope.
| | Fan | 410 | |
|
| Rotating speed (%) | 40 | 60 | 40 | |
| (noise dBA) | 23.5 | 23.5 | 23.5 | |
| Heat dissipation (℃) | 90 | 90 | 90 |
Table one
And in experimentation, more obtain the laboratory data of fan different heat dissipations that produce when different rotating speeds, install three fan in the experiment, when fan 410 reaches Dynamic Speed 60%, fan 411 and reaches Dynamic Speed 100% and reach Dynamic Speed 60% with fan 412, measured heat dissipation is optimum value (78 ℃), but this fan 410,411,412 is under this Dynamic Speed, and its level of noise is all 33.9dBA.
Via the resulting three fan 410 of experiment, 411,412 Dynamic Speed, the heat dissipation value that in the laboratory data of table two, produces, be that 78 ℃ to 97 ℃ scopes build in the controller 710 with the heat dissipation data of measured laboratory data, controller 710 will be detected according to detecting unit the corresponding control of temperature value that operating temperature the produces signal of electronic equipment 310, make fan see through the control signal and produce Dynamic Speed, the heat dissipation that reaches via dynamic adjustment rotating speed can maintain in the measured scope of experiment.
| | Fan | 410 | |
|
| Rotating speed (%) | 60 | 100 | 60 | |
| Heat dissipation (℃) | 78 | 78 | 78 | |
| (noise dBA) | 33.9 | 33.9 | 33.9 |
Table two
Via above-mentioned mode of execution in conjunction with description of test, and in consolidated statement one and the table two as can be known, when the rotating speed of table one is 40%, 60%, in the time of 40%, its level of noise: 23.5dBA and heat dissipation: 90 ℃, because the three fan rotating speed not yet reaches full-speed state, if this moment, detecting unit detected the operating temperature rising of electronic equipment, then three fan 410,411,412 will improve rotating speed, rotating speed such as table two is 60%, 100%, in the time of 60%, its heat dissipation: 78 ℃ and level of noise: 33.9dBA, that is can be according to the operating temperature of present electronic equipment in the situation of the Dynamic Speed of fan running, and reach by this purpose that reduces noise by the rotating speed of control fan, that is to say, see through the operating temperature that embodiments of the present invention can make electronic equipment 310, the noise that produces when the rotating speed of fan and fan running forms a state of equilibrium, so that fan not only can reduce the operating temperature of this electronic equipment 310, and also can reduce noise through the control of Dynamic Speed.
Because heat dissipation and level of noise that Dynamic Speed control produces can change to some extent, make the fan 410,411,412 of electronic equipment 310 with goodization operation.Mentioning " dynamically " in the experiment is a kind of indefinite numerical value, Dynamic Speed numerical value in this experiment is 40%, 60% and 100%, and this presents dynamic value because of different different the stipulating in field, in this explanation, these experimentation data are not the purpose usefulness that aid illustration fan Dynamic Speed of the present invention can reach in addition.
In addition, the method for controlling number of revolution of fan of the present invention, its method for controlling number of revolution is via the operating temperature that continues detecting one electronic equipment 310, produce the dynamic temperature value with correspondence, and temperature value is sent to controller and produces the control signal, and then the dynamic adjustment rotating speed of control fan, the different operating temperature that fan is produced at different time in response to electronic equipment 310, can produce in real time different rotation speeds of the fan dispels the heat, make it reach better heat dissipation, also control simultaneously the rotating speed of fan according to default value, use and reduce the noise that fan produces when running, so will reach the advantage that has good heat radiating usefulness and low noise generation concurrently, and use and obtain heat dissipation and the optimal balance point that generates level of noise.
Although embodiments of the invention disclose as mentioned above; so be not to limit the present invention; anyly have the knack of related art techniques person; without departing from the spirit and scope of the present invention; such as according to the described shape of the present patent application scope, structure, feature and quantity when can doing a little change, therefore scope of patent protection of the present invention must be looked the appended claim person of defining of this specification and is as the criterion.
Claims (6)
1. the method for controlling number of revolution of a fan is characterized in that, the method for controlling number of revolution of described fan may further comprise the steps:
One detecting unit continues the operating temperature of detecting one electronic equipment;
The temperature value that described detecting unit Dynamic Generation is corresponding;
One controller is set up a default value, and described default value is set up according to running audio frequency and the heat dissipation of a plurality of fans;
Described detecting unit continues to transmit described temperature value to described controller;
The described default value of described controller is compared a plurality of control signals of the corresponding generation of described temperature value of described detecting unit;
Described a plurality of control signal is sent to respectively described a plurality of fan; And
Described a plurality of fan is according to a plurality of dynamic adjustment rotating speeds of the described corresponding generation of a plurality of control signals difference.
2. the method for controlling number of revolution of fan according to claim 1 is characterized in that, the step that wherein continues the operating temperature of the described electronic equipment of detecting comprises:
Described detecting unit continues the described electronic equipment of detecting in the operating temperature of different time; And
Described detecting unit is according to the described temperature value of operating temperature Dynamic Generation of different time.
3. the method for controlling number of revolution of fan according to claim 1 is characterized in that, the step that wherein said controller produces described control signal comprises:
Described controller stores a plurality of control signals;
Described detecting unit continues to transmit described temperature value to described controller; And
The described default value of described controller is compared the described temperature value of described detecting unit and corresponding is produced a plurality of control signals.
4. the method for controlling number of revolution of fan according to claim 1 is characterized in that, it is identical, partly identical or different that the numerical value of described a plurality of dynamic adjustment rotating speeds of wherein said a plurality of fans can be.
5. revolution speed control device is used for a plurality of fans of an electronic equipment, it is characterized in that described revolution speed control device includes:
One detecting unit, the operating temperature of the described electronic equipment of lasting detecting, and a temperature value corresponding to described detecting unit Dynamic Generation; And
One controller is electrically connected described detecting unit and described fan and stores a default value, and described default value running audio frequency and the usefulness according to described a plurality of fans out of the ordinary is set up;
Wherein, described controller receives described temperature value and compares the described default value that described controller sets up and produce a plurality of control signals and be sent to described a plurality of fan, makes described a plurality of fan distinguish a plurality of dynamic adjustment rotating speeds of corresponding generation according to described a plurality of control signals.
6. revolution speed control device according to claim 5 is characterized in that, it is identical, partly identical or different that the numerical value of described a plurality of dynamic adjustment rotating speeds of wherein said a plurality of fans can be.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102103047A CN102900688A (en) | 2011-07-26 | 2011-07-26 | Device and method for controlling rotation speed of fans |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102103047A CN102900688A (en) | 2011-07-26 | 2011-07-26 | Device and method for controlling rotation speed of fans |
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| CN102900688A true CN102900688A (en) | 2013-01-30 |
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| CN2011102103047A Pending CN102900688A (en) | 2011-07-26 | 2011-07-26 | Device and method for controlling rotation speed of fans |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105715571A (en) * | 2014-12-01 | 2016-06-29 | 中兴通讯股份有限公司 | Communication equipment and multi-fan control method and device thereof |
| CN108959018A (en) * | 2017-05-24 | 2018-12-07 | Nzxt股份有限公司 | Fan-status control device |
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| CN1447030A (en) * | 2002-03-21 | 2003-10-08 | 华为技术有限公司 | Method for reducing noise of equipments based on control of fan rotate speed |
| JP2004185254A (en) * | 2002-12-03 | 2004-07-02 | Hitachi Ltd | Cooling system |
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| CN105715571A (en) * | 2014-12-01 | 2016-06-29 | 中兴通讯股份有限公司 | Communication equipment and multi-fan control method and device thereof |
| CN108959018A (en) * | 2017-05-24 | 2018-12-07 | Nzxt股份有限公司 | Fan-status control device |
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Application publication date: 20130130 |
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