CN111124086A - Method and device for regulating and controlling rotating speed of server fan - Google Patents
Method and device for regulating and controlling rotating speed of server fan Download PDFInfo
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- CN111124086A CN111124086A CN201911240939.4A CN201911240939A CN111124086A CN 111124086 A CN111124086 A CN 111124086A CN 201911240939 A CN201911240939 A CN 201911240939A CN 111124086 A CN111124086 A CN 111124086A
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 13
- 230000001276 controlling effect Effects 0.000 title claims abstract description 12
- 230000033228 biological regulation Effects 0.000 claims abstract description 16
- 238000005265 energy consumption Methods 0.000 abstract description 13
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 1
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- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
- G06F1/206—Cooling means comprising thermal management
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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
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Abstract
The invention provides a method for regulating and controlling the rotating speed of a server fan in order to solve the problems in the prior art, which comprises the following steps: the BMC acquires and calculates an increased value of output power of a power supply in a first time; the invention also provides a device for regulating and controlling the fan rotating speed of the server, which effectively solves the problems of single mode and large energy consumption caused by the existing fan regulation and control, effectively improves the efficiency of the fan regulation and control, reduces the energy consumption cost, obtains the temperature of corresponding PCIE equipment through the BMC, controls the corresponding fan to regulate the rotating speed according to the corresponding relation between the PCIE area and the fan, can improve the heat dissipation efficiency and the utilization rate of the fan, independently controls the rotating speed of each fan, and can avoid resonance and high-frequency noise caused by the same rotating speed operation of a plurality of fans.
Description
Technical Field
The invention relates to the field of fan regulation, in particular to a method and a device for regulating and controlling the rotating speed of a server fan.
Background
With the rapid development of cloud computing and machine learning, data computing and storage are more and more dependent on a data center, and as the most critical composition of the data center, maintaining good heat dissipation of a server under a high-density condition plays a critical role in the service life and stability of each component in the server. Because the internal space of the server is small, the density of parts is high, and the accumulated heat in the server can be exhausted only by driving air by a high-power fan under the condition that the existing water cooling mode is not mature and stable.
The current 2U server generally has 4 or more than 4 fans with the power of more than 20W, and the total power can reach more than 80W when the server runs at full speed, and huge noise is brought. The existing fan speed regulation scheme is shown in fig. 1, each fan gets 12V from a motherboard through a power supply line, a BMC controls a duty ratio of PWM (pulse width modulation) input to the fan to reach a control speed, and when the BMC detects that a temperature of a device exceeds a set value, the fan speed is increased.
The regulation strategy of regulating the rotating speed of the fan through the temperature is passive; the set fan rotating speed is simple and single in gear, energy waste is easily caused, the set fan rotating speeds for different temperature thresholds are simple, unnecessary power consumption cost is easily caused, and the regulation efficiency is not favorably improved.
Disclosure of Invention
The invention aims to solve the problems in the prior art, innovatively provides a method and a device for regulating and controlling the rotating speed of a server fan, effectively solves the problems of single mode and high energy consumption caused by the regulation and control of the existing fan, effectively improves the efficiency of regulating and controlling the fan, and reduces the energy consumption cost.
The invention provides a method for regulating and controlling the rotating speed of a server fan, which comprises the following steps:
the BMC acquires and calculates an increased value of output power of a power supply in a first time;
the increased value of the output power of the power supply in the first time corresponds to a plurality of intervals, each interval corresponds to a fan rotating speed value, and the BMC adjusts the fan rotating speed to the corresponding fan rotating speed value according to which interval the increased value is located until the server is in a stable operation working state.
With reference to the first aspect, in a first possible implementation manner of the first aspect, the method further includes: and after the server is in a stable operation working state, the BMC adjusts the rotating speed of the fan according to the temperature of the PCIE equipment.
Further, according to the temperature of the PCIE device, the adjusting the fan rotation speed by the BMC specifically includes:
dividing the PCIE equipment into a plurality of PCIE areas according to the air duct constraint of the air guide sleeve, wherein each PCIE area comprises a plurality of PCIE equipment, and acquiring the corresponding relation between the PCIE areas and the fan;
the method comprises the steps that the BMC obtains the temperature of corresponding PCIE equipment, determines a PCIE area according to the PCIE equipment, and controls a corresponding fan to adjust the rotating speed according to the corresponding relation between the PCIE area and the fan, wherein the BMC controls the fan independently.
With reference to the first aspect, in a second possible implementation manner of the first aspect, the number of the intervals is the same as the number of the fan rotation speed values.
With reference to the first aspect, in a third possible implementation manner of the first aspect, a starting value of a minimum interval in the multiple intervals is a minimum standby power consumption, and a maximum value of a maximum interval in the multiple intervals is a maximum overall power consumption.
With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the minimum interval in the intervals corresponds to a fan speed value of 20% of the full speed of the fan, and the maximum interval in the intervals corresponds to a fan speed value of 100% of the full speed of the fan.
A second aspect of the present invention provides a server fan speed control apparatus, including:
the acquisition module is used for acquiring and calculating the increased value of the output power of the power supply in the first time by the BMC;
the first adjusting module corresponds the increased value of the output power of the power supply in the first time to a plurality of intervals, each interval corresponds to a fan rotating speed value, and the BMC adjusts the fan rotating speed to the corresponding fan rotating speed value according to which interval the increased value is located until the server is in a stable operation working state.
With reference to the second aspect, in a first possible implementation manner of the second aspect, the method further includes: and the second adjusting module is used for adjusting the rotating speed of the fan by the BMC according to the temperature of the PCIE equipment after the server is in a stable operation working state.
The technical scheme adopted by the invention comprises the following technical effects:
1. the invention effectively solves the problems of single mode and larger energy consumption caused by the regulation and control of the existing fan, effectively improves the efficiency of the regulation and control of the fan and reduces the energy consumption cost.
2. The BMC acquires the temperature of the corresponding PCIE equipment, determines the PCIE area according to the PCIE equipment, controls the corresponding fan to adjust the rotating speed according to the corresponding relation between the PCIE area and the fan, controls the fan to be independently controlled by the BMC, can improve the heat dissipation efficiency and the utilization rate of the fan, reduces the energy consumption of the fan, independently controls the rotating speed of each fan, and can avoid resonance and high-frequency noise caused by the operation of a plurality of fans at the same rotating speed.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art 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 that other drawings can be obtained based on these drawings without any creative effort.
FIG. 1 is a schematic diagram of a fan control structure of a server in the prior art;
FIG. 2 is a schematic flow diagram of a process according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a topology of a server fan control according to an embodiment of the present invention;
FIG. 4 is a schematic flow diagram of a second method embodiment of the present invention;
FIG. 5 is a flowchart illustrating step S3 according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of corresponding positions of a PCIE area, PCIE devices, and a fan of a second server in the embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a third embodiment of an apparatus according to the present invention;
fig. 8 is a schematic structural diagram of a fourth apparatus 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. Furthermore, the present invention 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.
Example one
As shown in fig. 2 to 3, the present invention provides a method for regulating and controlling a rotational speed of a server fan, including:
s1, the BMC acquires and calculates the increased value of the output power of the power supply in the first time;
and S2, the increased value of the output power of the power supply in the first time corresponds to a plurality of intervals, each interval corresponds to a fan rotating speed value, and the BMC adjusts the fan rotating speed to the corresponding fan rotating speed value according to which interval the increased value is located until the server is in a stable operation working state.
In step S1, the power source may be acquired in such a manner that the BMC passes through an SMBUS bus (system management bus). The first time may be a multiple of 3, e.g. 3, 6, 9, 12, 15, 18, etc., preferably 15 s.
In step S2, the number of intervals is the same as the number of fan speed values, the starting value of the minimum interval in the intervals is the minimum standby power consumption, the maximum value of the maximum interval in the intervals is the maximum overall power consumption, the minimum interval in the intervals corresponds to the fan speed value of 20% of the full fan speed, specifically, the PWM duty ratio output by the BMC is adjusted to 20%, the maximum interval in the intervals corresponds to the fan speed value of 100% of the full fan speed, and the PWM duty ratio output by the BMC is adjusted to 100%. The BMC controls the rotating speed of the corresponding fan through the PWM signal and acquires the rotating speed of the corresponding fan through the TACH pin.
The range of each interval is (maximum overall power consumption-minimum standby power consumption)/the number of intervals, the minimum interval: [ minimum standby power consumption, minimum standby power consumption + (maximum overall power consumption-minimum standby power consumption)/number of intervals ], sequentially increasing in number, maximum interval: [ maximum overall power consumption- (maximum overall power consumption-minimum standby power consumption)/number of intervals, maximum overall power consumption ]; the difference value of the fan rotating speed values corresponding to the adjacent number intervals is (100% of full fan speed-20% of full fan speed)/the number of the intervals, the fan rotating speed value corresponding to the minimum interval is 20% of the full fan speed, the corresponding fan rotating speed values are increased along with the increase of the interval corresponding to the increase value, the corresponding fan rotating speed values are increased in sequence, and the fan rotating speed value corresponding to the maximum interval is 100% of the full fan speed; specifically, the number of intervals is preferably 9, the first interval is [ minimum standby power consumption, minimum standby power consumption + (maximum overall power consumption-minimum standby power consumption)/9 ], and the corresponding numerical value of the fan rotation speed is 20% of the full speed of the fan; the second interval is [ minimum standby power consumption + (maximum complete machine power consumption-minimum standby power consumption)/9, minimum standby power consumption +2 (maximum complete machine power consumption-minimum standby power consumption)/9 ], and the corresponding fan rotating speed value is 30% of full fan speed; and sequentially increasing progressively, wherein the ninth interval is [ maximum standby power consumption- (maximum complete machine power consumption-minimum standby power consumption)/9 meshes, and the maximum standby power consumption ], and the corresponding fan rotating speed value is 100% of the full speed of the fan.
The invention effectively solves the problems of single mode and larger energy consumption caused by the regulation and control of the existing fan, effectively improves the efficiency of the regulation and control of the fan and reduces the energy consumption cost.
Example two
As shown in fig. 4 to 6, the technical solution of the present invention further provides a method for regulating and controlling a rotational speed of a server fan, including:
s1, the BMC acquires and calculates the increased value of the output power of the power supply in the first time;
s2, the increased value of the output power of the power supply in the first time corresponds to a plurality of intervals, each interval corresponds to a fan rotating speed value, and the BMC adjusts the fan rotating speed to the corresponding fan rotating speed value according to which interval the increased value is located until the server is in a stable operation working state;
and S3, when the server is in a stable operation working state, the BMC adjusts the rotating speed of the fan according to the temperature of the PCIE equipment.
As shown in fig. 5, in step S3, the adjusting, by the BMC, the fan speed according to the temperature of the PCIE device specifically includes:
s31, dividing the PCIE equipment into a plurality of PCIE areas according to the air duct constraint of the air guide sleeve, wherein each PCIE area comprises a plurality of PCIE equipment, and acquiring the corresponding relation between the PCIE areas and the fans;
and S32, the BMC acquires the temperature of the corresponding PCIE equipment, determines a PCIE area according to the PCIE equipment, and controls the corresponding fan to adjust the rotating speed according to the corresponding relation between the PCIE area and the fan, wherein the BMC controls the fan independently.
In steps S31-S32, for clearly explaining the corresponding relationship among the PCIE areas, the PCIE devices, and the fans, taking a general server with 4 fans as an example, as shown in fig. 6, dividing the PCIE devices into 2 PCIE areas according to the air duct constraint of the pod, that is, a first PCIE area and a second PCIE area, where the first PCIE area includes a plurality of PCIE devices, the second PCIE area includes a plurality of PCIE devices, the first PCIE area corresponds to the first fan and the second fan, the second PCIE area corresponds to the third fan and the fourth fan, and the BMC determines the slot where the device is located according to the _ present # signal (in-place signal) returned by the PCIE devices, so as to know the PCIE area where the device is located.
If the BMC detects that the temperature of the PCIE equipment in the first PCIE area is increased, correspondingly increasing the rotating speeds of the first fan and the second fan; otherwise, the rotating speeds of the first fan and the second fan are reduced.
If the BMC detects that the temperature of the PCIE equipment in the second PCIE area is increased, correspondingly increasing the rotating speeds of the third fan and the fourth fan; otherwise, the rotating speeds of the third fan and the fourth fan are reduced.
The corresponding relation between the PCIE area and the PCIE equipment and the fan can be stored in the BMC in advance and called when the fan is used conveniently, the BMC in the embodiment adjusts and controls the rotating speed of the fan according to the temperature of the PCIE equipment and actually adjusts the rotating speed slightly, and the adjusting range cannot be too large.
The BMC acquires the temperature of the corresponding PCIE equipment, determines the PCIE area according to the PCIE equipment, controls the corresponding fan to adjust the rotating speed according to the corresponding relation between the PCIE area and the fan, controls the fan to be independently controlled by the BMC, can improve the heat dissipation efficiency and the utilization rate of the fan, reduces the energy consumption of the fan, independently controls the rotating speed of each fan, and can avoid resonance and high-frequency noise caused by the operation of a plurality of fans at the same rotating speed.
EXAMPLE III
As shown in fig. 7, the technical solution of the present invention further provides a server fan speed control device, including:
an obtaining module 101, which is used for obtaining and calculating the increased value of the output power of the power supply in the first time by the BMC;
the first adjusting module 102 corresponds the increased value of the output power of the power supply in the first time to a plurality of intervals, each interval corresponds to a fan rotating speed value, and the BMC adjusts the fan rotating speed to the corresponding fan rotating speed value according to which interval the increased value is located until the server is in a stable operation working state.
The invention effectively solves the problems of single mode and larger energy consumption caused by the regulation and control of the existing fan, effectively improves the efficiency of the regulation and control of the fan and reduces the energy consumption cost.
Example four
As shown in fig. 8, the technical solution of the present invention further provides a server fan speed control device, including:
an obtaining module 101, which is used for obtaining and calculating the increased value of the output power of the power supply in the first time by the BMC;
the first adjusting module 102 corresponds the increased value of the output power of the power supply in the first time to a plurality of intervals, each interval corresponds to a fan rotating speed value, and the BMC adjusts the fan rotating speed to the corresponding fan rotating speed value according to which interval the increased value is located until the server is in a stable operation working state;
and the second adjusting module 103, after the server is in a stable operation working state, the BMC adjusts the rotating speed of the fan according to the temperature of the PCIE device.
The BMC acquires the temperature of the corresponding PCIE equipment, determines the PCIE area according to the PCIE equipment, controls the corresponding fan to adjust the rotating speed according to the corresponding relation between the PCIE area and the fan, controls the fan to be independently controlled by the BMC, can improve the heat dissipation efficiency and the utilization rate of the fan, reduces the energy consumption of the fan, independently controls the rotating speed of each fan, and can avoid resonance and high-frequency noise caused by the operation of a plurality of fans at the same rotating speed.
The technical scheme of the invention mainly takes a 2U server as an example to explain the regulation and control of the rotating speed of the fan, and has certain reference significance for servers or exchangers with built-in fans at other heights.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (8)
1. A method for regulating and controlling the rotating speed of a server fan is characterized by comprising the following steps:
the BMC acquires and calculates an increased value of output power of a power supply in a first time;
the increased value of the output power of the power supply in the first time corresponds to a plurality of intervals, each interval corresponds to a fan rotating speed value, and the BMC adjusts the fan rotating speed to the corresponding fan rotating speed value according to which interval the increased value is located until the server is in a stable operation working state.
2. The method for regulating and controlling the rotation speed of a server fan according to claim 1, further comprising: and after the server is in a stable operation working state, the BMC adjusts the rotating speed of the fan according to the temperature of the PCIE equipment.
3. The method as claimed in claim 2, wherein the step of adjusting the fan speed by the BMC according to the temperature of the PCIE device specifically includes:
dividing the PCIE equipment into a plurality of PCIE areas according to the air duct constraint of the air guide sleeve, wherein each PCIE area comprises a plurality of PCIE equipment, and acquiring the corresponding relation between the PCIE areas and the fan;
the method comprises the steps that the BMC obtains the temperature of corresponding PCIE equipment, determines a PCIE area according to the PCIE equipment, and controls a corresponding fan to adjust the rotating speed according to the corresponding relation between the PCIE area and the fan, wherein the BMC controls the fan independently.
4. The method as claimed in claim 1, wherein the number of the intervals is the same as the number of the fan speed values.
5. The method as claimed in claim 1, wherein the starting value of the smallest interval of the intervals is the minimum standby power consumption, and the maximum value of the largest interval of the intervals is the maximum overall power consumption.
6. The method as claimed in claim 1, wherein the minimum interval of the intervals corresponds to a fan speed value of 20% of the full fan speed, and the maximum interval of the intervals corresponds to a fan speed value of 100% of the full fan speed.
7. A server fan speed regulation and control device is characterized by comprising:
the acquisition module is used for acquiring and calculating the increased value of the output power of the power supply in the first time by the BMC;
the first adjusting module corresponds the increased value of the output power of the power supply in the first time to a plurality of intervals, each interval corresponds to a fan rotating speed value, and the BMC adjusts the fan rotating speed to the corresponding fan rotating speed value according to which interval the increased value is located until the server is in a stable operation working state.
8. The server fan speed regulation device of claim 7 further comprising: and the second adjusting module is used for adjusting the rotating speed of the fan by the BMC according to the temperature of the PCIE equipment after the server is in a stable operation working state.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911240939.4A CN111124086A (en) | 2019-12-06 | 2019-12-06 | Method and device for regulating and controlling rotating speed of server fan |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911240939.4A CN111124086A (en) | 2019-12-06 | 2019-12-06 | Method and device for regulating and controlling rotating speed of server fan |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111810432A (en) * | 2020-06-28 | 2020-10-23 | 新华三信息技术有限公司 | Fan speed regulation method, device, equipment and machine readable storage medium |
| CN112181107A (en) * | 2020-09-10 | 2021-01-05 | 苏州浪潮智能科技有限公司 | Method and device for reducing power consumption of fan |
| CN113590428A (en) * | 2021-08-12 | 2021-11-02 | 北京中电兴发科技有限公司 | Fan rotating speed jitter suppression method |
| CN114151374A (en) * | 2021-11-05 | 2022-03-08 | 山东云海国创云计算装备产业创新中心有限公司 | Fan control circuit and host |
| CN114922840A (en) * | 2022-05-30 | 2022-08-19 | 苏州浪潮智能科技有限公司 | Control system and method of redundant fan |
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