CN113048090B - Fan rotating speed control method and system - Google Patents
Fan rotating speed control method and system Download PDFInfo
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- CN113048090B CN113048090B CN202110273850.9A CN202110273850A CN113048090B CN 113048090 B CN113048090 B CN 113048090B CN 202110273850 A CN202110273850 A CN 202110273850A CN 113048090 B CN113048090 B CN 113048090B
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- fan
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The invention discloses a method and a system for controlling the rotating speed of a fan, wherein the method comprises the following steps: before the baseboard management controller is started, the controller controls the rotating speed of the fan according to user control information; after the baseboard management controller is started, the fan rotating speed is controlled by the baseboard management controller. The system comprises: the controller is used for controlling the rotating speed of the fan according to the user control information before the substrate management controller is started; and the substrate management controller is used for controlling the rotating speed of the fan. The invention can quickly and conveniently control the rotating speed of the fan. Through using external fan rotational speed control panel, need not additionally change mainboard hardware design, also need not additionally occupy the space of front panel, the flexibility is stronger, need not use the OEM instruction moreover, can the noise reduction, can reduce fortune dimension personnel's working strength again.
Description
Technical Field
The invention relates to the field of server heat dissipation, in particular to a method and a system for controlling the rotating speed of a fan.
Background
The heat dissipation problem is an important problem to be solved in server development. On one hand, energy waste needs to be reduced, and on the other hand, the heat dissipation of the server needs to be ensured to be normal, so that each device and external equipment can work normally.
The conventional heat dissipation solution is to calculate the rotation speed of a fan according to a predetermined algorithm by a Baseboard Management Controller (BMC) according to a fixed-point temperature in a server, and then control the fan to achieve the purpose of heat dissipation. The fixed point temperature includes a Central Processing Unit (CPU) temperature, an ambient temperature, a PCIE (Peripheral Component Interconnect Express) device temperature, and the like, and the predetermined algorithm includes a linear algorithm, a discrete function, a PID (proportional-Integral-derivative) algorithm, and the like. The scheme can solve the problem of heat dissipation under the condition of saving energy.
However, the above method of controlling the fan speed by the BMC according to the fixed point temperature and the predetermined algorithm has the following disadvantages:
(1) In the early development stage, various parameters of a fan control algorithm cannot be timely given by related technicians, so that the rotating speed of the fan is unreasonable, the temperature of a CPU or related devices is too high, the service life of the CPU or related devices is influenced, or a server is shut down and cannot be normally used, and the project development progress is influenced;
(2) In the later operation and maintenance stage of the server, the cloud storage environment of the user is very complex, and the control algorithm parameters in the BMC cannot meet the actual conditions under many conditions, so that the system cannot be started, and the user operation is seriously influenced. Even if the BMC control parameters are adjusted according to the user cloud storage environment, development time is required.
(3) The rotating speed before the BMC is not started is too high, so that the cloud storage environment is very noisy, and the health of operators is influenced.
In view of the above situation, besides the BMC automatically controlling the fan speed, other fan speed control methods are also needed to solve the heat dissipation problem. The BMC is typically required to support Original Equipment Manufacturer (OEM) commands to set fan speed. However, this also requires the following conditions:
(1) Developers need to provide detailed setting parameters of OEM commands to users;
(2) Mounting ipmitool in the system;
(3) Determining the BMC IP of the server during remote control;
(4) The username and password of the server BMC need to be determined.
This method requires many parameters to be determined, which burdens maintenance personnel. Therefore, a need exists for a faster method of manually controlling a fan to solve this problem.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a method and a system for controlling a fan rotation speed, which can control the fan rotation speed before a baseboard management controller works normally, so as to reduce the fan noise.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fan speed control method comprising:
before the baseboard management controller is started, the controller controls the rotating speed of the fan according to user control information;
after the baseboard management controller is started, the rotating speed of the fan is controlled by the baseboard management controller.
Further, when the controller does not receive the user control information, the fan is operated at full speed.
Further, the controller is a complex programmable logic device.
Further, the user control information is generated by a fan control board.
Further, the baseboard management controller controls the rotating speed of the fan according to the information of the server temperature sensor.
Furthermore, the baseboard management controller receives the user control information and the server temperature sensing information, compares the fan rotating speeds corresponding to the user control information and the server temperature sensing information, and takes the maximum value as a final fan rotating speed value to control the fan rotating speed.
The invention also provides a fan rotating speed control system, which comprises:
the controller is used for controlling the rotating speed of the fan according to the user control information before the substrate management controller is started;
and the substrate management controller is used for controlling the rotating speed of the fan.
Further, the system also includes a fan control board for generating user control information.
Further, the controller is a complex programmable logic device.
The beneficial effects of the invention are:
the invention provides a method and a system for controlling the rotating speed of a fan, which can control the rotating speed of the fan quickly and conveniently. When the server starts to run, the system is powered on, the baseboard management controller is in a starting process, and the fan is in an out-of-control state, and the fan is at full speed and has high noise. The invention can take effect when the server starts to work, and does not need to take effect after the substrate management controller works normally, a user can operate the fan control panel to control the fan, and then the controller receives the signal and controls the fan through the PWM signal according to the rotating speed set by the user, so that the rotating speed of the fan is reduced, and the aim of reducing noise is fulfilled.
Through using external fan rotational speed control panel, need not additionally change mainboard hardware design, also need not additionally occupy the space of front panel, the flexibility is stronger, need not use the OEM instruction moreover, can the noise reduction, can reduce fortune dimension personnel's working strength again.
On the other hand, after the base plate management controller controls the fan, the rotating speed set by a user can be prevented from being too low and not meeting the temperature requirements of other devices in the server, so that the working requirement of the server is met.
Drawings
FIG. 1 is a flow chart illustrating a method for controlling a rotational speed of a fan according to an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of a fan speed control system according to an embodiment of the present invention.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Moreover, the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and procedures are omitted so as to not unnecessarily limit the invention.
As shown in fig. 1, an embodiment of the present invention discloses a method for controlling a fan rotation speed, including:
before a base plate Management Controller (BMC) is started, the Controller controls the rotating speed of a fan according to user control information;
after the baseboard management controller is started, the fan rotating speed is controlled by the baseboard management controller.
Specifically, when the server starts to run, the system supplies power, the BMC is not started at the moment, the fan is in an out-of-control state, the fan runs at full speed, and the noise is large; the user generates user control information through the fan control panel, and after the controller receives the signal, the fan is controlled through PWM according to the set rotating speed, so that the rotating speed of the fan is reduced, and the purpose of noise reduction is achieved. And when the controller does not receive the user control information, the fan runs at full speed to ensure that the server radiates normally.
The controller is preferably a Complex Programmable Logic Device (CPLD).
When the baseboard management controller is started, the fan rotation speed is controlled by the baseboard management controller, and the controller releases the control right. The baseboard management controller can automatically control the rotating speed of the fan according to the information of the server temperature sensor and a fan speed regulation algorithm.
The baseboard management controller can also receive user control information and server temperature sensing information at the same time, the fan rotating speed set by a user is obtained through the user control information, the fan rotating speed is calculated through a heat dissipation control algorithm according to the server temperature sensing information, the fan rotating speed and the server temperature sensing information are compared, the maximum value is taken as the final fan rotating speed value, and fan rotating speed control is conducted. Through the comparison of the rotating speeds of the fans, the rotating speed set by a user is prevented from being too low and not meeting the temperature requirements of other devices in the server, so that on one hand, the noise can be reduced quickly, and on the other hand, the working requirements of the server can be met.
As shown in fig. 2, an embodiment of the present invention further discloses a fan speed control system, including:
the controller is used for controlling the rotating speed of the fan according to the user control information before the substrate management controller is started;
and the substrate management controller is used for controlling the rotating speed of the fan.
Specifically, the system further includes a fan control board for generating user control information, which may set the fan speed to 100%, 70%, 50%, 20%, etc. The fan control panel does not need to additionally change the hardware design of a main board, does not need to additionally occupy the space of a front panel of the server, and has stronger flexibility.
The controller is preferably a complex programmable logic device.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Although the specific embodiments of the present invention have been described with reference to the accompanying drawings, the scope of the present invention is not limited thereto. Various other modifications and variations to the foregoing description may be apparent to those skilled in the art. And are neither required nor exhaustive of all embodiments. On the basis of the technical scheme of the invention, various modifications or changes which can be made by a person skilled in the art without creative efforts are still within the protection scope of the invention.
Claims (7)
1. A method of controlling a rotational speed of a fan, comprising:
before the baseboard management controller is started, the controller controls the rotating speed of the fan according to user control information;
specifically, when the server starts to run, the system supplies power, the BMC is not started at the moment, the fan is in an out-of-control state, the fan runs at full speed, and the noise is large; a user generates user control information through the fan control panel, and after receiving the signal, the controller controls the fan through PWM according to a set rotating speed, so that the rotating speed of the fan is reduced, and the purpose of noise reduction is achieved; when the controller does not receive the user control information, the fan runs at full speed to ensure that the server radiates normally;
after the substrate management controller is started, the rotating speed of the fan is controlled by the substrate management controller, and the controller releases the control right;
and the substrate management controller receives the user control information and the server temperature sensing information, compares the fan rotating speeds corresponding to the user control information and the server temperature sensing information, and takes the maximum value as a final fan rotating speed value to control the fan rotating speed.
2. The method of claim 1, wherein the controller is a complex programmable logic device.
3. The method of claim 1, wherein the user control information is generated by a fan control board.
4. The method of claim 1, wherein the baseboard management controller controls the fan speed according to server temperature sensor information.
5. A fan speed control system, comprising:
the controller is used for controlling the rotating speed of the fan according to the user control information before the substrate management controller is started;
specifically, when the server starts to run, the system supplies power, the BMC is not started at the moment, the fan is in an out-of-control state, the fan runs at full speed, and the noise is large; a user generates user control information through the fan control panel, and after receiving the signal, the controller controls the fan through PWM according to a set rotating speed, so that the rotating speed of the fan is reduced, and the purpose of noise reduction is achieved; when the controller does not receive the user control information, the fan runs at full speed to ensure that the server radiates normally;
the base plate management controller is used for controlling the rotating speed of the fan and releasing the control right;
the baseboard management controller receives the user control information and the server temperature sensing information at the same time, obtains the fan rotating speed set by the user through the user control information, calculates the fan rotating speed through a heat dissipation control algorithm according to the server temperature sensing information, compares the sizes of the fan rotating speed and the server temperature sensing information, and takes the maximum value as a final fan rotating speed value to control the fan rotating speed.
6. The fan speed control system of claim 5 further comprising a fan control board for generating user control information.
7. The fan speed control system of claim 5 wherein the controller is a complex programmable logic device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110273850.9A CN113048090B (en) | 2021-03-12 | 2021-03-12 | Fan rotating speed control method and system |
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| CN202110273850.9A CN113048090B (en) | 2021-03-12 | 2021-03-12 | Fan rotating speed control method and system |
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| CN113048090A CN113048090A (en) | 2021-06-29 |
| CN113048090B true CN113048090B (en) | 2023-02-28 |
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| CN115405550B (en) * | 2022-09-06 | 2024-01-19 | 苏州浪潮智能科技有限公司 | Fan control method, device, equipment and medium |
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