CN111412163B - Temperature control method for computer power supply fan - Google Patents
Temperature control method for computer power supply fan Download PDFInfo
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- CN111412163B CN111412163B CN202010130699.9A CN202010130699A CN111412163B CN 111412163 B CN111412163 B CN 111412163B CN 202010130699 A CN202010130699 A CN 202010130699A CN 111412163 B CN111412163 B CN 111412163B
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- fan
- temperature
- rotating speed
- power supply
- computer power
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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
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
Abstract
The invention discloses a temperature control method of a computer power supply fan, belongs to the field of computers, and aims to solve the problem that the working performance and the service life of the computer power supply fan are influenced by frequently adjusting the rotating speed of the computer power supply fan so that the computer power supply fan can follow the change of temperature in real time. The method comprises the following steps: step one, collecting the working temperature of a fan; step two, judging the interval of the working temperature of the fan: if the working temperature of the fan is lower than 20 ℃, the power supply fan does not work; if the working temperature of the fan is between 20 and 65 ℃, the fan is started to work according to the principle that the rotating speed of the fan lags behind the temperature; if the fan operating temperature is higher than 65 degrees, the fan operates at a constant maximum speed. The method provided by the invention can reduce the noise of the fan as much as possible while meeting the temperature control index, and improve the use experience of a user.
Description
Technical Field
The invention relates to an optimization relation control technology of the rotating speed and the temperature of a computer power supply fan, belonging to the field of computers.
Background
The performance of a computer power supply fan directly influences the working stability of a computer power supply, the performance of the power supply fan is required to be good in heat dissipation and low in noise as much as possible, most of the existing fans achieve the purpose of low noise as much as possible by selecting a mute motor for hardware upgrading, and due to the limitation of hardware, the noise still exists. The existing control mode is that the power supply fan generally runs at the maximum rotating speed so as to reduce the temperature of the computing electronic element within the shortest time and achieve the maximum heat dissipation effect, the heat dissipation efficiency is improved by improving the rotating speed, but the high-rotating-speed running can accelerate the aging of the power supply fan, the energy consumption is large, and under the condition that a motor with the same noise level is selected, the direct adverse experience of the maximum-rotating-speed fan for a user is large in noise.
In order to solve the problem of fan noise, a scheme of changing the rotating speed according to different temperatures is designed, as shown in fig. 1, after the computer is started, the fan is not started under the temperature T2 in the temperature rise period, and after the temperature T2 is exceeded, the rotating speed of the fan is adjusted in proportion to the temperature until the rotating speed reaches the maximum value Umax. And a temperature reduction period, wherein the rotating speed of the fan is reduced proportionally along with the reduction of the temperature, and the fan is operated at a fixed rotating speed until the temperature is reduced to T1, and the fan stops working when the temperature is reduced to T2. In the scheme, the fan rotating speed only relates to participation of T1 and T2 during calculation starting and closing, the fan rotating speed is basically in a stage of adjusting in proportion to the temperature in the normal operation process of the computer, namely the fan rotating speed changes in real time along with the change of the temperature, although the adjustment can accurately capture temperature information and adjust the rotating speed to enable the temperature of the fan to be accurately adjusted and controlled, the adjusting and controlling mode enables the rotating speed of the fan to be frequently adjusted, the operation influences the working performance and the service life of the fan, and frequent high and low noise is bad experience for users.
Disclosure of Invention
The invention aims to solve the problem that the working performance and the service life of a computer power supply fan are influenced by frequently adjusting the rotating speed of the computer power supply fan so that the computer power supply fan can follow the change of temperature in real time.
The invention relates to a temperature control method of a computer power supply fan, which comprises the following steps:
step one, collecting the working temperature of a fan;
step two, judging the interval of the working temperature of the fan:
if the working temperature of the fan is lower than 20 ℃, the power supply fan does not work;
if the working temperature of the fan is between 20 and 65 ℃, the fan is started to work according to the principle that the rotating speed of the fan lags behind the temperature;
if the fan operating temperature is higher than 65 degrees, the fan operates at a constant maximum speed.
Preferably, the starting operation of the fan following the principle that the fan speed lags behind the temperature is as follows:
secondly, generating a predicted rotating speed signal by the PID regulating unit according to a direct proportional relation of the temperature signal acquired in real time;
secondly, delaying the generated predicted rotating speed signal for 20-60 s through a data holding unit and sending the signal to a processor;
step two, the processor compares and judges the predicted rotating speed signal sent in the step two in a delayed mode with the current predicted rotating speed signal acquired in real time:
if it is
Controlling the rotating speed of the fan to be unchanged; wherein v istsFor delayed transmission of predicted speed signal, vts+tPredicting a current speed signal;
if it is
Processor with vts、vts+tThe medium and large values are sent to the fan as instructions, and the fan adjusts the rotating speed to v according to the instructionsts、vts+tThe larger of these values.
Preferably, the method further comprises the following steps:
and step two, after one comparison operation is finished, clearing the data in the data holding unit.
Preferably, in the first step, the PID adjusting unit adjusts the direct proportional relationship between the temperature signal and the fan rotation speed by changing the fan slip.
Preferably, the method further comprises the following judging step: and if the fan runs for 10-15 minutes at the maximum rotating speed and the working temperature of the fan still continues to rise and is higher than 70 ℃, alarming.
The invention has the advantages that: the method generally follows the idea that the rotating speed of the fan is adjusted along with the temperature, but a hysteresis response strategy is adopted in the adjusting process so as to overcome various damages to the fan caused by frequently adjusting the rotating speed. The method provided by the invention can reduce the noise of the fan as much as possible while meeting the temperature control index, and improve the use experience of a user.
Drawings
FIG. 1 is a prior art control fan speed versus temperature curve;
FIG. 2 is a schematic diagram of the hysteresis response of the temperature control method of the computer power fan according to the present invention.
Detailed Description
The first embodiment is as follows: the present embodiment is described below with reference to fig. 2, and the temperature control method of the computer power supply fan in the present embodiment includes the following steps:
step one, collecting the working temperature of a fan;
step two, judging the interval of the working temperature of the fan, and performing classification control according to the following three conditions:
the first condition is as follows: if the working temperature of the fan is lower than 20 ℃, the power supply fan does not work;
case two: if the working temperature of the fan is between 20 and 65 ℃, the fan is started to work according to the principle that the rotating speed of the fan lags behind the temperature;
the starting process of the fan following the principle that the rotating speed of the fan lags behind the temperature is as follows:
secondly, generating a predicted rotating speed signal by the PID regulating unit according to a direct proportional relation of the temperature signal acquired in real time;
the PID adjusting unit adjusts the direct proportional relation between the temperature signal and the rotating speed of the fan by changing the rotating speed of the fan. The variable of the fan speed regulation is slip, and the purpose of changing the slip is realized by limiting the current of a fan motor no matter an inductive speed regulator or a silicon controlled speed regulator.
Secondly, delaying the generated predicted rotating speed signal for 20-60 s through a data holding unit and sending the signal to a processor;
step two, the processor compares and judges the predicted rotating speed signal sent in the step two in a delayed mode with the current predicted rotating speed signal acquired in real time:
if it is
Controlling the rotating speed of the fan to be unchanged; wherein v istsPredicted speed signal, v, sent for delayts+tPredicting a current speed signal;
if it is
Processor with vts、vts+tThe medium and large values are sent to the fan as instructions, and the fan adjusts the rotating speed to v according to the instructionsts、vts+tThe larger of these values.
The temperature signal collected at the time point ts generates a rotating speed signal through a PID (proportion integration differentiation) adjusting unit, the rotating speed signal is kept by a data keeping unit and is sent to a processor at the time delay t of 20 s-60 s, the processor processes the two received signals at the time point ts + t, and if v is greater than v, the processor processes the two received signalsts、vts+tThe difference is not large, so that the rotating speed of the fan is not changed; if the difference exceeds the threshold range, selecting vts、vts+tThe medium and large values are used as commands to be sent to the fan for speed regulation, and the methodThe principle of the method is to reduce the adjusting frequency of the rotating speed of the fan as much as possible, meet the requirement that the rotating speed changes along with the temperature, and achieve the purposes of low noise of the fan and good temperature control effect.
Further comprising the steps of:
and step two, after one comparison operation is finished, clearing the data in the data holding unit.
The data in the data holding unit is cleared so that the next 20 s-60 s of delay data is efficiently transferred to perform the next comparison control. Only when the processor receives the data sent by the data holding unit, the comparison and output instruction is carried out, so that the aim of adjusting the rotating speed of the fan infrequently is achieved.
Case three: if the fan operating temperature is higher than 65 degrees, the fan operates at a constant maximum speed. Further comprising the following judging step: and if the fan runs for 10-15 minutes at the maximum rotating speed and the working temperature of the fan still continues to rise and is higher than 70 ℃, alarming.
Claims (4)
1. The temperature control method of the computer power supply fan is characterized by comprising the following steps:
step one, collecting the working temperature of a fan;
step two, judging the interval of the working temperature of the fan:
if the working temperature of the fan is lower than 20 ℃, the power supply fan does not work;
if the working temperature of the fan is between 20 and 65 ℃, the fan is started to work according to the principle that the rotating speed of the fan lags behind the temperature;
if the working temperature of the fan is higher than 65 ℃, the fan works at the maximum rotating speed and the constant speed; the starting process of the fan following the principle that the rotating speed of the fan lags behind the temperature is as follows:
secondly, generating a predicted rotating speed signal by the PID regulating unit according to a direct proportional relation of the temperature signal acquired in real time;
secondly, delaying the generated predicted rotating speed signal for 20-60 s through a data holding unit and sending the signal to a processor;
step two, the processor compares and judges the predicted rotating speed signal sent in the step two in a delayed mode with the current predicted rotating speed signal acquired in real time:
if it is
Controlling the rotating speed of the fan to be unchanged; wherein v istsPredicted speed signal, v, sent for delayts+tPredicting a current speed signal;
if it is
Processor with vts、vts+tThe medium and large values are sent to the fan as instructions, and the fan adjusts the rotating speed to v according to the instructionsts、vts+tThe larger of these values.
2. The method for controlling the temperature of a computer power fan according to claim 1, further comprising the steps of:
and step two, after one comparison operation is finished, clearing the data in the data holding unit.
3. The method according to claim 1, wherein the PID adjusting unit adjusts the proportional relationship between the temperature signal and the fan speed by changing the fan slip.
4. The method for controlling temperature of a computer power fan according to claim 1, further comprising the step of: and if the fan runs for 10-15 minutes at the maximum rotating speed and the working temperature of the fan still continues to rise and is higher than 70 ℃, alarming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010130699.9A CN111412163B (en) | 2020-02-28 | 2020-02-28 | Temperature control method for computer power supply fan |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010130699.9A CN111412163B (en) | 2020-02-28 | 2020-02-28 | Temperature control method for computer power supply fan |
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| CN111412163A CN111412163A (en) | 2020-07-14 |
| CN111412163B true CN111412163B (en) | 2020-12-08 |
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| CN112650324A (en) * | 2020-12-30 | 2021-04-13 | 广州奥鹏能源科技有限公司 | Temperature control method, device and system of energy storage equipment |
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| US6737824B1 (en) * | 2002-09-30 | 2004-05-18 | National Semiconductor Corporation | Fan acceleration control |
| CN101994717A (en) * | 2009-08-25 | 2011-03-30 | 中兴通讯股份有限公司 | Atca fan control method and atca machine frame manager |
| CN201896768U (en) * | 2010-12-01 | 2011-07-13 | 成都昊普环保技术有限公司 | Temperature-controlled fan speed regulating device |
| CN102854947A (en) * | 2011-06-27 | 2013-01-02 | 纬创资通股份有限公司 | Fan control system, computer system and method for controlling fan rotating speed |
| CN106708218A (en) * | 2015-11-13 | 2017-05-24 | 中国长城计算机深圳股份有限公司 | Noise-preventing control method and device of fan |
| CN109557987A (en) * | 2018-12-04 | 2019-04-02 | 郑州云海信息技术有限公司 | A kind of control method for fan and system of server |
| CN110159577A (en) * | 2019-04-03 | 2019-08-23 | 杭州嘉楠耘智信息科技有限公司 | Control method and system of heat dissipation device |
-
2020
- 2020-02-28 CN CN202010130699.9A patent/CN111412163B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6737824B1 (en) * | 2002-09-30 | 2004-05-18 | National Semiconductor Corporation | Fan acceleration control |
| CN101994717A (en) * | 2009-08-25 | 2011-03-30 | 中兴通讯股份有限公司 | Atca fan control method and atca machine frame manager |
| CN201896768U (en) * | 2010-12-01 | 2011-07-13 | 成都昊普环保技术有限公司 | Temperature-controlled fan speed regulating device |
| CN102854947A (en) * | 2011-06-27 | 2013-01-02 | 纬创资通股份有限公司 | Fan control system, computer system and method for controlling fan rotating speed |
| CN106708218A (en) * | 2015-11-13 | 2017-05-24 | 中国长城计算机深圳股份有限公司 | Noise-preventing control method and device of fan |
| CN109557987A (en) * | 2018-12-04 | 2019-04-02 | 郑州云海信息技术有限公司 | A kind of control method for fan and system of server |
| CN110159577A (en) * | 2019-04-03 | 2019-08-23 | 杭州嘉楠耘智信息科技有限公司 | Control method and system of heat dissipation device |
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