CN117514887A - Intelligent voltage-selecting cooling fan control circuit - Google Patents
Intelligent voltage-selecting cooling fan control circuit Download PDFInfo
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- CN117514887A CN117514887A CN202311594910.2A CN202311594910A CN117514887A CN 117514887 A CN117514887 A CN 117514887A CN 202311594910 A CN202311594910 A CN 202311594910A CN 117514887 A CN117514887 A CN 117514887A
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- cooling fan
- temperature
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- rotating speed
- power
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- 238000001816 cooling Methods 0.000 title claims abstract description 91
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 230000000630 rising effect Effects 0.000 claims abstract description 23
- 238000003064 k means clustering Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 13
- 238000004364 calculation method Methods 0.000 claims description 10
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 238000007499 fusion processing Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000013473 artificial intelligence Methods 0.000 claims description 2
- 238000013528 artificial neural network Methods 0.000 claims description 2
- 238000013527 convolutional neural network Methods 0.000 claims description 2
- 230000004927 fusion Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to a cooling fan control circuit capable of intelligently selecting voltage, which belongs to the technical field of electronic product cooling, adopts a heating factor to quantify the heating speed of a component to be cooled under different operation powers, adjusts the temperature threshold values of the different operation powers according to the heating factor, calculates the corresponding cooling fan starting time of the different operation powers, and solves the problem that the cooling quality of the cooling fan is low because the heating speed of the electronic product under the different operation powers is different and the cooling fan is difficult to start in advance according to the change of the operation power; the rotating speed grade of the cooling fan is divided by adopting K-means clustering, the temperature variables of the operating power and the temperature rising factors are obtained by utilizing a data fusion mode, and finally, an artificial intelligent model between the temperature variables and the rotating speed grade is constructed, so that the problem that the cooling efficiency of the cooling fan is low due to the fact that the rotating speed is difficult to intelligently control according to the operating power and the change of the temperature rising condition in the prior art is solved.
Description
Technical Field
The invention belongs to the technical field of electronic product heat dissipation, and relates to a heat dissipation fan control circuit capable of intelligently selecting voltage.
Background
Currently, most heat dissipation fans control the rotational speed of the fan by detecting the operating power and temperature of electronic components to select an operating voltage. In general, an electronic component is required to be heated to a high temperature after being continuously operated for a period of time under a certain power, and most of the cooling fans are driven to cool after the electronic component is heated to a certain temperature.
When the electronic product runs under high power, the temperature rises rapidly, and the cooling fan cannot be started in advance, so that the temperature exceeds a threshold range, and the electronic component is damaged. However, the temperature rising speeds of the electronic products under different running powers are different, so that the starting time of the cooling fan can be judged according to the running power change of the electronic products, and the rotating speed can be intelligently controlled in the prior art.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a cooling fan control circuit capable of intelligently selecting voltage.
The aim of the invention can be achieved by the following technical scheme:
the invention provides a cooling fan control circuit capable of intelligently selecting voltage, which comprises a data acquisition module, an intelligent analysis module and a voltage control module, wherein:
the data acquisition module is used for monitoring the running power and temperature data of the element to be cooled and storing the rotating speed data of the cooling fan during operation;
the intelligent analysis module is connected with the data acquisition module and is used for calculating heating factors of different operation powers, and the heating factors are used for measuring the temperature rising speed of the element to be cooled when the element works at a certain operation power; according to the heating factors, determining the starting time of the cooling fan with different running powers; constructing an artificial intelligent model, and determining the rotation speeds of the cooling fans with different running powers;
the voltage control module is connected with the intelligent analysis module and used for controlling working voltage to drive the cooling fan to reach the starting time and the rotating speed determined by the intelligent analysis module; when the heat dissipation element stops working, the control voltage enables the heat dissipation fan to continuously work for a period of time at the rotating speed before the working stop.
Further, in the intelligent analysis module, the temperature rise factors of different operation powers are calculated according to the following calculation formula:
wherein: k represents a heating factor; t is t i For the i-th period, when i=0, t i-1 ＝t 0 Indicating that the element to be heat-dissipated is not operated; t (T) i Representing the temperature of the ith operating period of the element to be heat-dissipated, T when i=1 i-1 ＝T 0 For the initial temperature when the element to be heat-dissipated is not operating, n is the total number of operating time periods.
Further, in the intelligent analysis module, the determining the starting time of the cooling fan with different running powers according to the temperature rising factor includes the following steps:
s1, setting a standard temperature threshold value: selecting the running power in normal operation as standard power, and determining a standard temperature threshold value of the standard power according to experience;
s2, determining temperature thresholds of different operating powers according to the difference of temperature rise factors between the different operating powers and the standard power;
s3, determining the starting time of the cooling fan with different running powers according to the temperature thresholds with different running powers.
Further, in step S2, according to the difference between the heating factors of the different operating powers and the standard power, a temperature threshold of the different operating powers is determined, where a calculation formula is as follows:
wherein: t (T) j A temperature threshold indicative of a j-th operating power; k (K) j A temperature increase factor representing the j-th operating power; k (K) s A temperature rise factor representing standard power; t (T) s A temperature threshold representing standard power.
Further, in step S3, the starting time of the cooling fan with different running powers is determined according to the temperature thresholds with different running powers, and the calculation formula of the starting time of the cooling fan is as follows:
wherein: t is t j The start time of the j-th operating power is represented; t (T) j A temperature threshold indicative of a j-th operating power; k (K) j The temperature rise factor for the j-th operating power is indicated.
Further, in the intelligent analysis module, the construction of the artificial intelligent model and the determination of the rotation speeds of the cooling fans with different operation powers comprise the following steps:
t1, dividing the rotation speed grade: dividing the cooling fan rotating speed data into a plurality of rotating speed clusters by adopting a K-means clustering method, and taking a rotating speed value corresponding to a clustering center of each rotating speed cluster as a rotating speed grade;
t2, temperature variable determination: carrying out data fusion processing on different operating powers and corresponding heating factors thereof to obtain temperature variables of the different operating powers;
t3, constructing an artificial intelligent model: and constructing an artificial intelligent model by taking the temperature variable as an interpretation variable and the rotating speed grade as a response variable, and quantifying the rotating speed grades of different operating powers.
Further, in the voltage control module, the control working voltage drives the cooling fan to reach the start time and the rotation speed determined by the intelligent analysis module, and the method comprises the following working procedures:
o1, collecting the running power of the element to be cooled, and transmitting the running power to an intelligent analysis model;
o2, the intelligent analysis module outputs the starting time and the corresponding rotating speed grade of the cooling fan and transmits the starting time and the corresponding rotating speed grade to the voltage control module;
and O3, the voltage control module controls the voltage of the cooling fan according to the starting time and the requirements of the rotating speed grade.
The invention has the beneficial effects that:
(1) The temperature rising factors are adopted to quantify the temperature rising speed of the element to be cooled under different operating powers, the temperature threshold values of the different operating powers are adjusted according to the temperature rising factors, and the corresponding starting time of the cooling fan under the different operating powers is calculated, so that the problem that the cooling quality of the cooling fan is low due to the fact that the difference exists between the temperature rising speeds of electronic products under the different operating powers and the cooling fan is difficult to start in advance according to the change of the operating powers is solved;
(2) The method comprises the steps of utilizing data when the cooling fan works well, adopting K-means cluster to divide the rotating speed grade of the cooling fan, utilizing a data fusion mode to obtain the operating power and the temperature variable of the temperature rising factor, and finally constructing an artificial intelligent model between the temperature variable and the rotating speed grade, thereby solving the problem that the cooling efficiency of the cooling fan is low because the rotating speed is difficult to intelligently control according to the operating power and the change of the temperature rising condition in the prior art.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
Fig. 1 is a block diagram of a control circuit for a cooling fan with intelligent voltage selection in the present invention.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1, the invention provides a cooling fan control circuit capable of intelligently selecting voltage, which comprises a data acquisition module, an intelligent analysis module and a voltage control module, wherein:
the data acquisition module is used for monitoring the running power and temperature data of the element to be cooled and storing the rotating speed data of the cooling fan during operation;
the intelligent analysis module is connected with the data acquisition module and is used for calculating heating factors of different operation powers, and the heating factors are used for measuring the temperature rising speed of the element to be cooled when the element works at a certain operation power; according to the heating factors, determining the starting time of the cooling fan with different running powers; constructing an artificial intelligent model, and determining the rotation speeds of the cooling fans with different running powers;
the voltage control module is connected with the intelligent analysis module and used for controlling working voltage to drive the cooling fan to reach the starting time and the rotating speed determined by the intelligent analysis module; when the heat dissipation element stops working, the control voltage enables the heat dissipation fan to continuously work for a period of time at the rotating speed before the working stop.
It should be noted that the temperature rise factor is obtained by changing the temperature of the element to be cooled after the element is continuously operated for a period of time at a certain operation power, however, the temperature does not linearly increase with the operation time, so in the present invention, the operation time is divided into a plurality of time periods according to a certain step length, and the temperature rise factor is obtained by calculating the temperature rise of all the time periods (i.e. the temperature rise value in a single time step length) and summing and averaging.
Further, in the intelligent analysis module, the temperature rise factors of different operation powers are calculated according to the following calculation formula:
wherein: k represents a heating factor; t is t i For the i-th period, when i=0, t i-1 ＝t 0 Indicating that the element to be heat-dissipated is not operated; t (T) i Representing the temperature of the ith operating period of the element to be heat-dissipated, T when i=1 i-1 ＝T 0 For the initial temperature when the element to be heat-dissipated is not operating, n is the total number of operating time periods.
Further, in the intelligent analysis module, the determining the starting time of the cooling fan with different running powers according to the temperature rising factor includes the following steps:
s1, setting a standard temperature threshold value: selecting the running power in normal operation as standard power, and determining a standard temperature threshold value of the standard power according to experience;
s2, determining temperature thresholds of different operating powers according to the difference of temperature rise factors between the different operating powers and the standard power;
s3, determining the starting time of the cooling fan with different running powers according to the temperature thresholds with different running powers.
In this embodiment, the temperature rising factors of different operating powers are different, the temperature rising speed of the electronic component in the high-power operating state is fast, the cooling fan needs to be started in advance, and the temperature threshold is an effective judgment basis for the starting time of the cooling fan. In the prior art, most of temperature thresholds set by the cooling fans are fixed, so that the cooling fans cannot be started in time in a high-power running state, and the cooling efficiency is low. According to the invention, the temperature threshold values of different operating powers are adjusted by utilizing the difference of the temperature rising factors between the different operating powers and the standard power, so that the temperature threshold values are used as judging conditions for starting the fan, and the cooling efficiency is improved.
Further, in step S2, according to the difference between the heating factors of the different operating powers and the standard power, a temperature threshold of the different operating powers is determined, where a calculation formula is as follows:
wherein: t (T) j A temperature threshold indicative of a j-th operating power; k (K) j A temperature increase factor representing the j-th operating power; k (K) s A temperature rise factor representing standard power; t (T) s A temperature threshold representing standard power.
It should be noted that, in the above calculation formula, since the higher operating power has a faster heating rate, the temperature threshold is smaller than the temperature threshold for reducing the operating power, so that the heating factors of different operating powers are used as denominators, the heating factor of the standard power is used as numerator, and when the operating power is higher than the standard power, the temperature threshold is smaller than the standard temperature threshold.
Further, in step S3, the starting time of the cooling fan with different running powers is determined according to the temperature thresholds with different running powers, and the calculation formula of the starting time of the cooling fan is as follows:
wherein: t is t j The start time of the j-th operating power is represented; t (T) j A temperature threshold indicative of a j-th operating power; k (K) j The temperature rise factor for the j-th operating power is indicated.
In this embodiment, the start-up time of the cooling fan indicates the time when the element to be cooled works under different operating powers and reaches the temperature threshold, which depends on the temperature raising factor. In the formula, the larger the heating factor is, the smaller the starting time is, and the more the cooling fan needs to be started in advance, so that the element to be cooled can dissipate heat in time, and the cooling quality is improved.
Further, in the intelligent analysis module, the construction of the artificial intelligent model and the determination of the rotation speeds of the cooling fans with different operation powers comprise the following steps:
t1, dividing the rotation speed grade: dividing the cooling fan rotating speed data into a plurality of rotating speed clusters by adopting a K-means clustering method, and taking a rotating speed value corresponding to a clustering center of each rotating speed cluster as a rotating speed grade;
t2, temperature variable determination: carrying out data fusion processing on different operating powers and corresponding heating factors thereof to obtain temperature variables of the different operating powers;
t3, constructing an artificial intelligent model: and constructing an artificial intelligent model by taking the temperature variable as an interpretation variable and the rotating speed grade as a response variable, and quantifying the rotating speed grades of different operating powers.
In this embodiment, the data for modeling is taken from the stored rotational speed data of the cooling fan during operation, where the data is required to be that the cooling fan works well under different operating powers, i.e. the element to be cooled down to below the temperature threshold. In order to stabilize the rotation speed of the cooling fan, the cooling fan is divided into a plurality of rotation speed grades so as to adapt to the change of different operation powers, and the temperature variable of the different operation powers is obtained by adopting a data fusion mode so as to consider the temperature rise condition of the different operation powers and adjust the rotation speed grade of the cooling fan. Furthermore, since the interpretation variables involved in modeling are continuous data, the response variables are classified data, the artificial intelligence model employed in this example is preferably a convolutional neural network or a multi-layer perceptron neural network.
Further, in the voltage control module, the control working voltage drives the cooling fan to reach the start time and the rotation speed determined by the intelligent analysis module, and the method comprises the following working procedures:
o1, collecting the running power of the element to be cooled, and transmitting the running power to an intelligent analysis model;
o2, the intelligent analysis module outputs the starting time and the corresponding rotating speed grade of the cooling fan and transmits the starting time and the corresponding rotating speed grade to the voltage control module;
and O3, the voltage control module controls the voltage of the cooling fan according to the starting time and the requirements of the rotating speed grade.
It should be noted that, in the voltage control module, when the element to be cooled stops working, the control voltage makes the cooling fan continuously work for a period of time at the rotation speed before the working stop, so as to ensure that the residual heat of the element to be cooled can be rapidly dissipated after the working stop. In the prior art, the low rotating speed is controlled by small voltage to enable the element to be cooled to remove the waste heat, however, the element to be cooled may be operated in a high power state before stopping working, and the temperature is high at the moment, the low rotating speed is difficult to enable the element to be cooled to quickly remove the waste heat.
The invention has the beneficial effects that:
(1) The temperature rising factors are adopted to quantify the temperature rising speed of the element to be cooled under different operating powers, the temperature threshold values of the different operating powers are adjusted according to the temperature rising factors, and the corresponding starting time of the cooling fan under the different operating powers is calculated, so that the problem that the cooling quality of the cooling fan is low due to the fact that the difference exists between the temperature rising speeds of electronic products under the different operating powers and the cooling fan is difficult to start in advance according to the change of the operating powers is solved;
(2) The method comprises the steps of utilizing data when the cooling fan works well, adopting K-means cluster to divide the rotating speed grade of the cooling fan, utilizing a data fusion mode to obtain the operating power and the temperature variable of the temperature rising factor, and finally constructing an artificial intelligent model between the temperature variable and the rotating speed grade, thereby solving the problem that the cooling efficiency of the cooling fan is low because the rotating speed is difficult to intelligently control according to the operating power and the change of the temperature rising condition in the prior art.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (8)
1. A cooling fan control circuit capable of intelligently selecting voltage is characterized in that: the intelligent analysis system comprises a data acquisition module, an intelligent analysis module and a voltage control module, wherein:
the data acquisition module is used for monitoring the running power and temperature data of the element to be cooled and storing the rotating speed data of the cooling fan during operation;
the intelligent analysis module is connected with the data acquisition module and is used for calculating heating factors of different operation powers, and the heating factors are used for measuring the temperature rising speed of the element to be cooled when the element works at a certain operation power; according to the heating factors, determining the starting time of the cooling fan with different running powers; constructing an artificial intelligent model, and determining the rotation speeds of the cooling fans with different running powers;
the voltage control module is connected with the intelligent analysis module and used for controlling working voltage to drive the cooling fan to reach the starting time and the rotating speed determined by the intelligent analysis module; when the heat dissipation element stops working, the control voltage enables the heat dissipation fan to continuously work for a period of time at the rotating speed before the working stop.
2. The intelligent voltage-selective radiator fan control circuit of claim 1, wherein: in the intelligent analysis module, the temperature rise factors of different running powers are calculated according to the following calculation formula:
wherein: k represents a heating factor; t is t i For the i-th period, when i=0, t i-1 ＝t 0 Indicating that the element to be heat-dissipated is not operated; t (T) i Representing the temperature of the ith operating period of the element to be heat-dissipated, T when i=1 i-1 ＝T 0 For the initial temperature when the element to be heat-dissipated is not operating, n is the total number of operating time periods.
3. The intelligent voltage-selective radiator fan control circuit of claim 1, wherein: in the intelligent analysis module, the method for determining the starting time of the cooling fan with different running powers according to the temperature rise factors comprises the following steps:
s1, setting a standard temperature threshold value: selecting the running power in normal operation as standard power, and determining a standard temperature threshold value of the standard power according to experience;
s2, determining temperature thresholds of different operating powers according to the difference of temperature rise factors between the different operating powers and the standard power;
s3, determining the starting time of the cooling fan with different running powers according to the temperature thresholds with different running powers.
4. A cooling fan control circuit for intelligently selecting voltages as set forth in claim 3, wherein: in step S2, according to the difference of the heating factors between the different operating powers and the standard power, the temperature thresholds of the different operating powers are determined, and the calculation formula is as follows:
wherein: t (T) j A temperature threshold indicative of a j-th operating power; k (K) j A temperature increase factor representing the j-th operating power; k (K) s A temperature rise factor representing standard power; t (T) s A temperature threshold representing standard power.
5. A cooling fan control circuit for intelligently selecting voltages as set forth in claim 3, wherein: in step S3, the starting time of the cooling fan with different running powers is determined according to the temperature thresholds with different running powers, and the calculation formula of the starting time of the cooling fan is as follows:
wherein: t is t j The start time of the j-th operating power is represented; t (T) j A temperature threshold indicative of a j-th operating power; k (K) j The temperature rise factor for the j-th operating power is indicated.
6. The intelligent voltage-selective radiator fan control circuit of claim 1, wherein: in the intelligent analysis module, an artificial intelligent model is constructed, and the rotation speeds of the cooling fans with different running powers are determined, and the method comprises the following steps:
t1, dividing the rotation speed grade: dividing the cooling fan rotating speed data into a plurality of rotating speed clusters by adopting a K-means clustering method, and taking a rotating speed value corresponding to a clustering center of each rotating speed cluster as a rotating speed grade;
t2, temperature variable determination: carrying out data fusion processing on different operating powers and corresponding heating factors thereof to obtain temperature variables of the different operating powers;
t3, constructing an artificial intelligent model: and constructing an artificial intelligent model by taking the temperature variable as an interpretation variable and the rotating speed grade as a response variable, and quantifying the rotating speed grades of different operating powers.
7. The intelligent voltage-selective radiator fan control circuit of claim 1, wherein: in the voltage control module, the control working voltage is used for driving the cooling fan to reach the starting time and the rotating speed determined by the intelligent analysis module, and the method comprises the following working procedures:
o1, collecting the running power of the element to be cooled, and transmitting the running power to an intelligent analysis model;
o2, the intelligent analysis module outputs the starting time and the corresponding rotating speed grade of the cooling fan and transmits the starting time and the corresponding rotating speed grade to the voltage control module;
and O3, the voltage control module controls the voltage of the cooling fan according to the starting time and the requirements of the rotating speed grade.
8. The intelligent voltage-selective radiator fan control circuit of claim 1, wherein: the artificial intelligence model is configured as a convolutional neural network or a multi-layer perceptron neural network.
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| CN202311594910.2A CN117514887B (en) | 2023-11-28 | 2023-11-28 | Intelligent voltage-selecting cooling fan control circuit |
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| CN202311594910.2A CN117514887B (en) | 2023-11-28 | 2023-11-28 | Intelligent voltage-selecting cooling fan control circuit |
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| CN117514887B CN117514887B (en) | 2024-05-07 |
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| CN116877473A (en) * | 2023-08-18 | 2023-10-13 | 肇庆晟辉电子科技有限公司 | Cooling fan control system and control method |
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| CN103954025A (en) * | 2014-05-21 | 2014-07-30 | 江苏新科电器有限公司 | Intelligent control system of air conditioner and intelligent control method thereof |
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Country or region after: China Address after: Building 1, No. 10 Chuangxin Road, Jindu Town, Gaoyao District, Zhaoqing City, Guangdong Province, 526108 Applicant after: Guangdong Shenghui Technology Co.,Ltd. Address before: Building 1, No. 10 Chuangxin Road, Jindu Town, Gaoyao District, Zhaoqing City, Guangdong Province, 526108 Applicant before: ZHAOQING SHENGHUI ELECTRONIC TECHNOLOGY Co.,Ltd. Country or region before: China |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |