CN112462922B - Fan energy-saving control method, system, terminal and storage medium - Google Patents
Fan energy-saving control method, system, terminal and storage medium Download PDFInfo
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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
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4411—Configuring for operating with peripheral devices; Loading of device drivers
Abstract
The invention provides a fan energy-saving control method, a system, a terminal and a storage medium, comprising the following steps: setting a corresponding relation between the shutdown time and the pulse signal difference value; setting a BMC to store a current environment variable after receiving a shutdown signal, wherein the environment variable comprises a shutdown time and a fan pulse signal during shutdown; collecting the previous power-off time and the current power-on time, and calculating the current power-off time according to the previous power-off time and the current power-on time; inquiring a corresponding pulse signal difference value according to the current shutdown time and the corresponding relation; and acquiring a fan pulse signal during the previous shutdown, and taking the difference between the fan pulse signal during the previous shutdown and the corresponding pulse signal difference as a fan control pulse signal during the current startup. The invention can control the rotating speed of the fan in the starting process of the server, thereby achieving the effect of saving energy of the fan.
Description
Technical Field
The invention relates to the technical field of servers, in particular to a fan energy-saving control method, a system, a terminal and a storage medium.
Background
In the field of servers, BMC is mainly implemented by Embedded Linux, a boot loader program is started first, then Kernel and application are started, the BMC cannot execute complex services in the process, and events which can cause the boot process may include updating BMC firmware, commanding to trigger reset BMC and AC off/on server.
The time for the BMC to execute the boot process is generally 3-8 minutes, and the BMC can only intervene with a proper fan control algorithm when waiting for the boot to be completed. At present, the general design of a server is that before the BMC is started, the fan speed is fixed to be 100% duty cycle, and in the environment of a Data Center, the period of time is power-consuming.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, the present invention provides a method, a system, a terminal and a storage medium for controlling energy saving of a fan, so as to solve the above-mentioned technical problems.
In a first aspect, the present invention provides a method for controlling energy saving of a fan, including:
setting a corresponding relation between the shutdown time and the pulse signal difference value;
setting a BMC to store a current environment variable after receiving a shutdown signal, wherein the environment variable comprises a shutdown time and a fan pulse signal during shutdown;
collecting the previous power-off time and the current power-on time, and calculating the current power-off time according to the previous power-off time and the current power-on time;
inquiring a corresponding pulse signal difference value according to the current shutdown time and the corresponding relation;
and acquiring a fan pulse signal during the previous shutdown, and taking the difference between the fan pulse signal during the previous shutdown and the corresponding pulse signal difference as a fan control pulse signal during the current startup.
Further, the setting of the corresponding relationship between the shutdown duration and the pulse signal difference includes:
setting the grade of the shutdown time length according to the principle that the longer the shutdown time length is, the higher the grade is;
and setting a corresponding pulse signal difference value for each shutdown time length grade according to the principle that the higher the shutdown time length grade is, the larger the corresponding pulse signal difference value is.
Further, the acquiring the previous shutdown time and the current startup time includes:
reading the occurrence time of the previous shutdown event recorded by the BMC from an accessible nonvolatile memory of the BMC;
and collecting the occurrence time of the current starting event from the BMC.
Further, the method further comprises:
reading the previous system reset occurrence reason recorded by the BMC from the accessible nonvolatile memory of the BMC;
judging whether the occurrence reason is power-off or not:
if yes, outputting the fan control pulse signal of the current startup to a fan controller;
if not, setting the full-speed rotation of the fan.
In a second aspect, the present invention provides an energy saving control system for a fan, including:
the corresponding setting unit is configured for setting the corresponding relation between the shutdown duration and the pulse signal difference;
the variable recording unit is configured to set the BMC to store a current environment variable after receiving a shutdown signal, wherein the environment variable comprises a shutdown time and a fan pulse signal during shutdown;
the time length calculating unit is configured for acquiring the previous shutdown time and the current startup time and calculating the current shutdown time length according to the previous shutdown time and the current startup time;
the signal query unit is configured to query a corresponding pulse signal difference value according to the current shutdown time and the corresponding relation;
and the fan control unit is configured to collect a fan pulse signal during the previous shutdown, and use the difference between the fan pulse signal during the previous shutdown and the corresponding pulse signal difference as a fan control pulse signal during the current startup.
Further, the correspondence setting unit includes:
the time length setting module is configured for setting the grade of the shutdown time length according to the principle that the longer the shutdown time length is, the higher the grade is;
and the signal setting module is configured to set a corresponding pulse signal difference value for each shutdown duration grade according to the principle that the higher the shutdown duration grade is, the larger the corresponding pulse signal difference value is.
Further, the duration calculation unit includes:
the system comprises a power-off acquisition module, a power-off acquisition module and a power-off management module, wherein the power-off acquisition module is configured to read the time of occurrence of the previous power-off event recorded by the BMC from an accessible nonvolatile memory of the BMC;
and the starting acquisition module is configured for acquiring the occurrence time of the current starting event from the BMC.
Further, the system further comprises:
the reason acquisition unit is configured for reading the reason of the previous system reset occurrence recorded by the BMC from the accessible nonvolatile memory of the BMC;
the reason judging unit is configured for judging whether the occurrence reason is power-off shutdown;
the signal output unit is configured to output the fan control pulse signal of the current startup to the fan controller if the generation reason is power-off shutdown;
and the full-speed setting unit is configured to set the fan to rotate at full speed if the occurrence reason is not power-off.
In a third aspect, a terminal is provided, including:
a processor, a memory, wherein,
the memory is used for storing a computer program which,
the processor is used for calling and running the computer program from the memory so as to make the terminal execute the method of the terminal.
In a fourth aspect, a computer storage medium is provided having stored therein instructions that, when executed on a computer, cause the computer to perform the method of the above aspects.
The beneficial effect of the invention is that,
the energy-saving control method, the system, the terminal and the storage medium of the fan provided by the invention have the advantages that the BMC stores the current environment variable when the AC off Server is powered off, and the optimized rotating speed of the fan can be determined by the environment variable when the AC on Server is powered on next time. The invention can control the rotating speed of the fan in the starting process of the server, thereby achieving the effect of saving energy of the fan.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Drawings
In order to more clearly illustrate the embodiments or prior art solutions of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic flow diagram of a method of one embodiment of the invention.
FIG. 2 is a schematic block diagram of a system of one embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following explains key terms appearing in the present invention.
BMC is a chip managed by a main server on a Basebard Management controller server.
Bootloader is a small program that is executed before the operating system runs. With this applet, we can initialize the hardware device.
Kernel refers to the operating system.
Application refers to a computer program written for a specific Application purpose of a user
PWM (pulse Width modulation) is a technique for converting an analog signal into a pulse wave, and the period of the converted pulse wave is generally fixed, but the duty cycle of the pulse wave varies depending on the magnitude of the analog signal.
Embedded Linux is a generic name for a class of Embedded operating systems, which are all based on Linux kernel and designed for use in Embedded devices.
FIG. 1 is a schematic flow diagram of a method of one embodiment of the invention. The execution main body in fig. 1 may be a fan energy saving control system.
As shown in fig. 1, the method includes:
and 150, acquiring a fan pulse signal during the previous power-off, and taking the difference between the fan pulse signal during the previous power-off and the corresponding pulse signal difference value as a fan control pulse signal during the current power-on.
Specifically, the fan energy-saving control method includes:
and S1, setting the corresponding relation between the shutdown time length and the pulse signal difference value.
Setting the grade of the shutdown time length according to the principle that the grade is higher as the shutdown time length is longer, and setting a corresponding pulse signal difference value for each grade of the shutdown time length according to the principle that the pulse signal difference value corresponding to the higher grade of the shutdown time length is larger.
Correspondence of settings, for example, Table 1
TABLE 1 Difference PWM Table
| Interval between shutdown and startup | Differential PWM |
| X sec | A％ |
| … | … |
| Y sec | B％ |
| … | … |
| Z sec | C％ |
The closer the time of the AC on system is to the time of the last system AC off, the closer the PWM required by the system will be to the PWM setting at the time of the last system AC off. Wherein X > … > Y > … > Z, A > … > B > … > C, means that the larger the interval time between power-off and power-on, the larger the resulting "difference PWM". The table is pre-designed and experimentally obtained, and varies according to project design.
And S2, setting the BMC to store the current environment variable after receiving the shutdown signal, wherein the environment variable comprises the shutdown time and the fan pulse signal during shutdown.
The Server BMC stores the current environment variable when the AC off Server, and determines the optimized fan rotating speed through the environment variable when the AC on Server is next time.
The stored environment variables are shown in table 2:
TABLE 2 Fan control transfer variable table
The information is stored in a BMC accessible non-volatile memory.
S3 sets a variable 1, i.e., AC Flag is 1, and this variable is used to determine whether the system restart is caused by AC off/on the next time AC on.
And reading a fan control transfer variable table to obtain the AC Flag, the last AC off Time (Occurrence Time) and the current PWM value (Occurrence PWM).
When AC flag is equal to 0, it indicates that the system reset is not caused by AC off, and it is necessary to set the fan full rotation.
S4, when AC flag is equal to 1, obtain (occupancy Time) and calculate the interval (T) by a subtraction operation with the current Time, find the closest interval Time (Z) through "table two: difference PWM table", which is a conversion table obtained by experiments during system design, a PWM value (C) can be quickly found. It shows that the longer the on-off time interval, the longer the system is not powered on, the closer the temperature of the chip is to the normal temperature, and the smaller the required PWM is. PWM is set to ((Occurrenct PWM) -C%).
For example: when the AC is off, the BMC records time (R), then when the AC is on again, the BMC records the time (S), the interval time is S-R-T, the T value is substituted into a 'table two: difference value PWM table', the closest time interval is found, if Z sec is adopted, the corresponding difference value PWM is C%, and the PWM value required to be set by the AC on is obtained as (Occurence PWM) -C.
If the time of AC Off is very close to the time of the next AC on, which means that C is close to 0, the PWM to be set for the next AC on is (Occurence PWM), which is the PWM value corresponding to AC Off.
If the AC Off time and the next AC on time are extremely large, indicating that the difference PWM approaches a value (a), the PWM to be set on the next AC on time is (occurrentpwm) - (a), and the set PWM may be 0, because (occurrent PWM) ≧ a ≧ 0.
As shown in fig. 2, the system 200 includes:
a corresponding setting unit 210 configured to set a corresponding relationship between the shutdown duration and the pulse signal difference;
the variable recording unit 220 is configured to set the BMC to store a current environment variable after receiving a shutdown signal, where the environment variable includes a shutdown time and a fan pulse signal during shutdown;
a duration calculating unit 230 configured to collect a previous power-off time and a current power-on time, and calculate a current power-off duration according to the previous power-off time and the current power-on time;
a signal query unit 240 configured to query a corresponding pulse signal difference according to the current shutdown duration and the corresponding relationship;
the fan control unit 250 is configured to collect a fan pulse signal at the previous time of shutdown, and use a difference between the fan pulse signal at the previous time of shutdown and the corresponding pulse signal difference as a fan control pulse signal at the current time of startup.
Optionally, as an embodiment of the present invention, the corresponding setting unit includes:
the time length setting module is configured for setting the grade of the shutdown time length according to the principle that the longer the shutdown time length is, the higher the grade is;
and the signal setting module is configured to set a corresponding pulse signal difference value for each shutdown time length grade according to the principle that the higher the shutdown time length grade is, the larger the corresponding pulse signal difference value is.
Optionally, as an embodiment of the present invention, the duration calculating unit includes:
the system comprises a power-off acquisition module, a power-off acquisition module and a power-off management module, wherein the power-off acquisition module is configured to read the time of occurrence of the previous power-off event recorded by the BMC from an accessible nonvolatile memory of the BMC;
and the starting acquisition module is configured for acquiring the occurrence time of the current starting event from the BMC.
Optionally, as an embodiment of the present invention, the system further includes:
the reason acquisition unit is configured for reading the reason of the previous system reset occurrence recorded by the BMC from the accessible nonvolatile memory of the BMC;
the reason judging unit is configured for judging whether the occurrence reason is power-off shutdown;
the signal output unit is configured to output the fan control pulse signal of the current startup to the fan controller if the generation reason is power-off shutdown;
and the full-speed setting unit is configured to set the fan to rotate at full speed if the occurrence reason is not power-off shutdown.
Fig. 3 is a schematic structural diagram of a terminal 300 according to an embodiment of the present invention, where the terminal 300 may be used to execute the method for controlling energy saving of a fan according to the embodiment of the present invention.
Among them, the terminal 300 may include: a processor 310, a memory 320, and a communication unit 330. The components communicate via one or more buses, and those skilled in the art will appreciate that the architecture of the servers shown in the figures is not intended to be limiting, and may be a bus architecture, a star architecture, a combination of more or less components than those shown, or a different arrangement of components.
The memory 320 may be used for storing instructions executed by the processor 310, and the memory 320 may be implemented by any type of volatile or non-volatile storage terminal or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The executable instructions in memory 320, when executed by processor 310, enable terminal 300 to perform some or all of the steps in the method embodiments described below.
The processor 310 is a control center of the storage terminal, connects various parts of the entire electronic terminal using various interfaces and lines, and performs various functions of the electronic terminal and/or processes data by operating or executing software programs and/or modules stored in the memory 320 and calling data stored in the memory. The processor may be composed of an Integrated Circuit (IC), for example, a single packaged IC, or a plurality of packaged ICs connected with the same or different functions. For example, the processor 310 may include only a Central Processing Unit (CPU). In the embodiment of the present invention, the CPU may be a single operation core, or may include multiple operation cores.
A communication unit 330, configured to establish a communication channel so that the storage terminal can communicate with other terminals. And receiving user data sent by other terminals or sending the user data to other terminals.
The present invention also provides a computer storage medium, wherein the computer storage medium may store a program, and the program may include some or all of the steps in the embodiments provided by the present invention when executed. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a Random Access Memory (RAM).
Therefore, the present invention stores the current environment variable by the BMC when the AC off Server is powered off, and determines the optimized fan speed by the environment variable when the AC on Server is powered on next time. The invention can control the fan rotating speed in the process of starting the server, thereby achieving the effect of saving energy of the fan.
Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented as software plus a required general purpose hardware platform. Based on such understanding, the technical solutions in the embodiments of the present invention may be substantially or partially embodied in the form of a software product, the computer software product is stored in a storage medium, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and various media capable of storing program codes include several instructions for enabling a computer terminal (which may be a personal computer, a server, or a second terminal, a network terminal, etc.) to execute all or part of the steps of the method in the embodiments of the present invention.
The same and similar parts in the various embodiments in this specification may be referred to each other. Especially, for the terminal embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant points can be referred to the description in the method embodiment.
In the embodiments provided in the present invention, it should be understood that the disclosed system and method can be implemented in other ways. For example, the above-described system embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, systems or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
Although the present invention has been described in detail in connection with the preferred embodiments with reference to the accompanying drawings, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. An energy-saving control method for a fan is characterized by comprising the following steps:
setting a corresponding relation between the shutdown time and the pulse signal difference value;
setting a BMC to store a current environment variable after receiving a shutdown signal, wherein the environment variable comprises a shutdown time and a fan pulse signal during shutdown;
collecting the previous shutdown time and the current startup time, and calculating the current shutdown time according to the previous shutdown time and the current startup time;
inquiring a corresponding pulse signal difference value according to the current shutdown time and the corresponding relation;
collecting a fan pulse signal during the previous power-off, and taking the difference between the fan pulse signal during the previous power-off and the corresponding pulse signal difference value as a fan control pulse signal during the current power-on;
the setting of the corresponding relation between the shutdown duration and the pulse signal difference comprises the following steps:
setting the grade of the shutdown time length according to the principle that the longer the shutdown time length is, the higher the grade is;
and setting a corresponding pulse signal difference value for each shutdown duration grade according to the principle that the higher the shutdown duration grade is, the larger the corresponding pulse signal difference value is.
2. The method of claim 1, wherein the collecting the previous power-off time and the current power-on time comprises:
reading the time of the previous shutdown event recorded by the BMC from the accessible nonvolatile memory of the BMC;
and collecting the occurrence time of the current starting event from the BMC.
3. The method of claim 1, further comprising:
reading the previous system reset occurrence reason recorded by the BMC from the accessible nonvolatile memory of the BMC;
judging whether the occurrence reason is power-off or not:
if so, outputting the fan control pulse signal of the current startup to a fan controller;
if not, setting the full-speed rotation of the fan.
4. An energy-saving control system for a fan, comprising:
the corresponding setting unit is configured for setting the corresponding relation between the shutdown duration and the pulse signal difference;
the variable recording unit is configured to set the BMC to store a current environment variable after receiving a shutdown signal, wherein the environment variable comprises a shutdown time and a fan pulse signal during shutdown;
the time length calculating unit is configured for acquiring the previous shutdown time and the current startup time and calculating the current shutdown time length according to the previous shutdown time and the current startup time;
the signal query unit is configured to query a corresponding pulse signal difference value according to the current shutdown time length and the corresponding relation;
the fan control unit is configured to collect a fan pulse signal during the previous shutdown, and take the difference between the fan pulse signal during the previous shutdown and the corresponding pulse signal difference as a fan control pulse signal during the current startup;
the correspondence setting unit includes:
the time length setting module is configured for setting the grade of the shutdown time length according to the principle that the longer the shutdown time length is, the higher the grade is;
and the signal setting module is configured to set a corresponding pulse signal difference value for each shutdown duration grade according to the principle that the higher the shutdown duration grade is, the larger the corresponding pulse signal difference value is.
5. The system according to claim 4, wherein the duration calculation unit comprises:
the system comprises a power-off acquisition module, a power-off acquisition module and a power-off management module, wherein the power-off acquisition module is configured to read the time of occurrence of the previous power-off event recorded by the BMC from an accessible nonvolatile memory of the BMC;
and the starting acquisition module is configured for acquiring the occurrence time of the current starting event from the BMC.
6. The system of claim 4, further comprising:
the reason acquisition unit is configured for reading the reason of the previous system reset occurrence recorded by the BMC from the accessible nonvolatile memory of the BMC;
the reason judging unit is configured for judging whether the occurrence reason is power-off shutdown;
the signal output unit is configured to output the fan control pulse signal of the current startup to the fan controller if the generation reason is power-off shutdown;
and the full-speed setting unit is configured to set the fan to rotate at full speed if the occurrence reason is not power-off.
7. A terminal, comprising:
a processor;
a memory for storing instructions for execution by the processor;
wherein the processor is configured to perform the method of any one of claims 1-3.
8. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1-3.
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