CN114153693A - Server fan state monitoring method and device and storage medium - Google Patents
Server fan state monitoring method and device and storage medium Download PDFInfo
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Abstract
The invention relates to a server fan state monitoring method, a server fan state monitoring device and a storage medium. The invention monitors a target PWM signal for controlling the rotating speed of a target fan; collecting the actual rotating speed of a target fan; judging whether a target PWM signal of the target fan reaches a preset duty ratio threshold value and/or whether the actual rotating speed reaches a preset second rotating speed threshold value, and if not, performing fault warning on the target fan when the actual rotating speed is lower than the preset first rotating speed threshold value; if so, calculating the minimum expected fan rotating speed corresponding to the target PWM signal duty ratio, and performing fault warning on the target fan when the actual rotating speed is lower than the minimum expected fan rotating speed; or calculating the maximum expected PWM signal duty ratio corresponding to the actual rotating speed, and performing target fan fault warning when the target PWM signal duty ratio is larger than the maximum expected PWM signal duty ratio. The invention adopts different modes to judge whether the fan has faults when the error of the rotating speed of the fan is large and when the error of the rotating speed of the fan is small, thereby ensuring the sensitivity of error reporting and avoiding error reporting.
Description
Technical Field
The invention relates to the technical field of server fan monitoring, in particular to a server fan state monitoring method, a server fan state monitoring device and a storage medium.
Background
In a server system, a BMC is generally used to monitor and manage the health condition of a motherboard. Some important parameters in the server, such as voltage, temperature, power consumption and the like, are monitored and recorded through the BMC, and the monitoring and the regulation of the rotating speed of the fan are also realized through a fan control module in the BMC.
The server integrates a heat dissipation regulation strategy into the BMC, and defines how many revolutions the rotating speed of the fan needs to reach to ensure the current heat dissipation when the acquired temperature reaches a certain control point; the fan control module in the BMC can output a PWM (Pulse Width Modulation) signal duty ratio for controlling the rotating speed of the fan to regulate and control the rotating speed of the fan according to the monitored temperature information and by combining a heat dissipation strategy; and detecting the rotating speed of the fan in real time, comparing the rotating speed with the set rotating speed of the fan, and feeding back to regulate and control the PWM duty ratio. Under an ideal state, the fan is monitored and controlled by monitoring the rotating speed of the fan, and whether the fan is abnormal or not can be judged according to whether the duty ratio of the PWM signal is consistent with the actual rotating speed of the fan or not. However, the PWM signal duty ratio and the fan speed are not in a mapping relationship, and the fan speed is not stable under the same PWM signal duty ratio. Experimental data of the fan shows that the error of the fan rotating speed under the same PWM signal is directly related to the rotating speed of the fan, the error is larger when the rotating speed is lower, and the error of some fans can be even over 50 percent; at high rotation speed, the error of the fan is small, generally within 10%, so that error alarm is easily caused by comparing PWM signals with the fan rotation speed to detect the abnormality of the fan.
Disclosure of Invention
In order to solve the technical problems or at least partially solve the technical problems, the invention provides a server fan state monitoring method, a server fan state monitoring device and a storage medium.
In a first aspect, the present invention provides a server fan status monitoring method, including:
monitoring a target PWM signal for controlling a target fan speed;
collecting the actual rotating speed of a target fan;
judging whether a target PWM signal of the target fan reaches a preset duty ratio threshold value and/or whether the actual rotating speed reaches a preset second rotating speed threshold value;
otherwise, when the actual rotating speed is lower than a preset first rotating speed threshold value, performing fault warning on the target fan;
if so, calculating the minimum expected fan rotating speed corresponding to the target PWM signal duty ratio, and performing fault warning on the target fan when the actual rotating speed is lower than the minimum expected fan rotating speed; or calculating the maximum expected PWM signal duty ratio corresponding to the actual rotating speed, and performing target fan fault warning when the target PWM signal duty ratio is larger than the maximum expected PWM signal duty ratio.
Further, the duty cycle threshold is obtained by:
setting a threshold value of a fan rotating speed error rate;
traversing the PWM signal duty ratio of the rotating speed of the fan for multiple times, and acquiring the actual rotating speed of the fan for multiple times under the condition of the same PWM signal duty ratio;
and counting whether the error rates of the collected actual rotating speed of the fan and the expected rotating speed of the fan corresponding to the PWM signals are both smaller than the threshold value of the error rate of the rotating speed of the fan under the condition of the duty ratio of each PWM signal, if so, selecting the minimum PWM signal from the qualified PWM signals as the threshold value of the duty ratio.
Further, the manner of obtaining the second rotation speed threshold is as follows:
setting a PWM signal duty ratio error rate threshold;
traversing the fan rotating speed within the fan rotating speed range as a target rotating speed, and controlling the PWM signal duty ratio of the fan rotating speed for multiple times to reach the target rotating speed;
and counting whether error rates of the duty ratios of the utilized PWM signals and the expected PWM signal duty ratios corresponding to the target rotating speed are both smaller than the threshold value of the error rate of the duty ratios of the PWM signals when the target rotating speed is reached, if so, selecting the minimum target rotating speed from the qualified target rotating speeds as the second rotating speed threshold value.
Furthermore, fan experiments with different service lives are utilized to obtain a duty ratio threshold value or a second rotating speed threshold value, and a fitting relation between the duty ratio threshold value or the second rotating speed threshold value and the service life of the fan is obtained;
and acquiring and configuring a duty ratio threshold or a second rotating speed threshold for carrying out abnormal alarm on the target fan according to the actual service life of the target fan and the fitting relation.
Furthermore, the first rotating speed threshold value is used for correcting the influence of the airflow generated by other fans driving abnormal fan rotation.
Further, the calculating the minimum expected fan speed corresponding to the target PWM signal duty cycle includes:
recording the mapping relation between the duty ratio of the PWM signal and the error rate of the rotating speed of the fan;
acquiring a target fan rotating speed error rate according to the target PWM signal duty ratio;
the corresponding expected fan rotating speed is obtained from the target PWM signal duty ratio,
the minimum expected fan speed is obtained from the expected fan speed (1-target fan speed error rate).
Further, the calculating the maximum expected PWM signal duty cycle corresponding to the actual rotation speed includes:
recording the mapping relation between the actual rotating speed and the rotating speed error rate of the fan;
acquiring a target fan rotating speed error rate according to the implementation rotating speed;
the corresponding expected duty ratio of the PWM signal is obtained from the implementation rotating speed,
the maximum expected PWM signal duty cycle is obtained from the expected PWM signal duty cycle (1+ target fan speed error rate).
In a second aspect, the present invention provides a server fan status monitoring apparatus, including: the PWM signal monitoring module monitors PWM signals for driving fans in the server;
the rotating speed acquisition module acquires the actual rotating speed of the fan;
the first judgment module is used for judging whether a target PWM signal of a target fan reaches a preset duty ratio threshold value and/or whether an actual rotating speed reaches a preset second rotating speed threshold value;
the second judgment module compares the actual rotating speed of the target fan with the first rotating speed threshold value to judge whether the target fan fails or not when the first judgment module judges that the target fan fails;
the third judgment module compares the actual rotating speed of the target fan with the minimum expected rotating speed of the fan determined by the target PWM signal to judge whether the target fan fails or not when the first judgment module judges that the target fan fails; and/or the fourth judging module compares the target PWM signal duty ratio of the target fan with the maximum expected PWM signal duty ratio determined by the actual rotating speed to judge whether the target fan fails or not when the first judging module judges that the target fan fails;
and the warning module is used for sending out a fault warning of the target fan when the target fan fails.
Preferably, the server fan status monitoring apparatus further includes: a first calculation module that calculates a minimum expected fan speed from a target PWM signal; and/or the second calculation module calculates the maximum expected PWM signal duty ratio according to the actual rotating speed.
In a third aspect, the present invention provides a medium for implementing a server fan status monitoring method, where the medium for implementing the server fan status monitoring method stores at least one instruction, and reads and executes the instruction to implement the server fan status monitoring method.
Compared with the prior art, the technical scheme provided by the embodiment of the invention has the following advantages:
firstly judging whether a target PWM signal of a target fan reaches a preset duty ratio threshold value and/or whether an actual rotating speed reaches a preset second rotating speed threshold value; if so, determining that the error rate between the expected fan rotating speed of the PWM signal and the actual fan rotating speed does not influence the fan fault determination, and determining whether the fan is in fault by comparing the actual fan rotating speed with the minimum expected fan rotating speed determined by the target PWM signal duty ratio and/or determining whether the fan is in fault by comparing the target PWM signal duty ratio with the maximum expected PWM signal duty ratio determined by the actual rotating speed; if not, the error rate between the expected fan rotating speed of the PWM signal and the actual fan rotating speed is considered to influence the fan fault judgment, and the relation between the actual fan rotating speed and the first rotating speed threshold value is compared to judge whether the fan is in fault or not, namely the fan is considered to be in fault when the fan cannot be driven to rotate by the PWM signal.
In conclusion, the sensitivity of fan fault alarming can be guaranteed, and the false alarm of fan faults is avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a flowchart of a possible server fan status monitoring method according to an embodiment of the present invention;
fig. 2 is a flowchart of obtaining a duty cycle threshold according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for calculating a minimum expected fan speed corresponding to a target PWM signal duty ratio according to an embodiment of the present invention;
fig. 4 is a flowchart of another possible method for monitoring the status of a server fan according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating obtaining a second rotational speed threshold according to an embodiment of the present invention;
fig. 6 is a flowchart of a method for calculating a maximum expected PWM signal duty ratio corresponding to an actual rotation speed according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a server fan status monitoring apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Example 1
Referring to fig. 1, an embodiment of the present invention provides a feasible server fan status monitoring method, including:
s10, monitoring a target PWM signal for controlling a target fan speed; in the specific implementation process, the high level duration and the low level duration of the target PWM signal are counted by using a fine clock signal, and the duty ratio of the target PWM signal is calculated.
S20, collecting the actual rotating speed of the target fan; the actual rotational speed of the target fan is measured by a tachometer provided in the fan.
S30, judging whether the target PWM signal of the target fan reaches a preset duty ratio threshold value; otherwise, S40 is executed, if yes, S50 is executed.
In a specific implementation process, referring to fig. 2, the manner of obtaining the duty ratio threshold is as follows:
s31, setting a threshold value of a fan speed error rate;
s32, traversing the PWM signal duty ratio of the fan rotating speed for multiple times, and collecting the actual rotating speed of the fan for multiple times under the condition of the same PWM signal duty ratio;
s33, counting whether the error rates of the collected fan actual rotating speed and the expected fan rotating speed corresponding to the PWM signal are both less than the fan rotating speed error rate threshold value under each PWM signal duty ratio condition, if yes, executing S34.
And S34, selecting the minimum PWM signal as the duty ratio threshold value.
In a specific implementation process, fan experiments with different service lives are utilized to obtain a duty ratio threshold value, and a fitting relation between the duty ratio threshold value and the service life of the fan is obtained;
and acquiring and configuring a duty ratio threshold value for performing abnormal alarm on the target fan according to the actual service life of the target fan and the fitting relation.
S40, comparing whether the actual rotating speed of the target fan is larger than a preset first rotating speed threshold value, if so, executing S80, otherwise, executing S70; the fan design in the server generally adopts a multi-fan redundancy design, and when a certain fan fails to work, the fans can be driven to rotate by the airflow generated by other fans. The first rotating speed threshold value is used for correcting the influence of airflow generated by other fans driving abnormal fans to rotate.
S50, calculating the minimum expected fan rotating speed corresponding to the target PWM signal duty ratio; specifically, referring to fig. 3, the calculating the minimum expected fan speed corresponding to the target PWM signal duty ratio includes:
s51, recording the mapping relation between the PWM signal duty ratio and the fan rotation speed error rate;
s52, acquiring a target fan rotation speed error rate according to the target PWM signal duty ratio;
s53, obtaining the corresponding expected fan speed according to the target PWM signal duty ratio;
and S54, obtaining the minimum expected fan speed through the expected fan speed (1-target fan speed error rate).
S60, comparing whether the actual speed of the target fan is larger than the minimum expected fan speed, otherwise executing S70, if yes, executing S80.
And S70, performing target fan fault warning.
And S80, not carrying out target fan fault warning.
Example 2
Referring to fig. 4, an embodiment of the present invention provides another possible server fan status monitoring method, including:
s100, a target PWM signal for controlling the target fan rotating speed is monitored.
And S200, acquiring the actual rotating speed of the target fan.
S300, judging whether the actual rotating speed of the target fan reaches a preset second rotating speed threshold value or not; otherwise, executing S400, if yes, executing S500.
In a specific implementation process, referring to fig. 5, the manner of obtaining the second rotation speed threshold is as follows:
s301, setting a PWM signal duty ratio error rate threshold value for controlling a fan to reach a set rotating speed;
s302, traversing the fan rotating speed within the fan rotating speed range as a target rotating speed, and controlling the PWM signal duty ratio of the fan rotating speed for multiple times to reach the target rotating speed;
s303, counting whether the error rates of the duty ratios of the PWM signals used when the target rotation speed is reached and the expected PWM signal duty ratio corresponding to the target rotation speed are both less than the threshold value of the error rate of the duty ratio of the PWM signal, if yes, executing S304.
And S304, selecting the minimum target rotating speed from the target rotating speeds meeting the conditions as the second rotating speed threshold value.
In the specific implementation process, fan experiments with different service lives are utilized to obtain a second rotating speed threshold value, and the fitting relation between the second rotating speed threshold value and the service life of the fan is obtained;
and acquiring and configuring a second rotating speed threshold for performing abnormal alarm on the target fan according to the actual service life of the target fan and the fitting relation.
And S400, comparing whether the actual rotating speed of the target fan is greater than a preset first rotating speed threshold value, if so, executing S800, and otherwise, executing S700.
S500, calculating the maximum expected PWM signal duty ratio corresponding to the actual rotating speed of the target fan; specifically, referring to fig. 6, the calculating the maximum expected PWM signal duty ratio corresponding to the actual rotation speed includes:
s501, recording a mapping relation between an actual rotating speed and a rotating speed error rate of the fan;
s502, acquiring a target fan rotating speed error rate according to the implementation rotating speed;
s503, acquiring the corresponding expected PWM signal duty ratio according to the implementation rotating speed;
and S504, acquiring the maximum expected PWM signal duty ratio through the expected PWM signal duty ratio (1+ target fan speed error rate).
S600, comparing whether the target PWM signal duty ratio of the target fan is larger than the maximum expected PWM signal duty ratio, if so, executing S700, otherwise, executing S800.
And S700, performing target fan fault warning.
And S800, not performing fault warning on the target fan.
Example 3
Referring to fig. 7, an embodiment of the present application provides a feasible server fan status monitoring apparatus, including: the PWM signal monitoring module monitors PWM signals for driving fans in the server;
the rotating speed acquisition module acquires the actual rotating speed of the fan;
the first judgment module is used for judging whether a target PWM signal of a target fan reaches a preset duty ratio threshold value and/or whether an actual rotating speed reaches a preset second rotating speed threshold value;
the second judgment module compares the actual rotating speed of the target fan with the first rotating speed threshold value to judge whether the target fan fails or not when the first judgment module judges that the target fan fails;
a first calculation module that calculates a minimum expected fan speed from a target PWM signal;
and/or the second calculating module calculates the maximum expected PWM signal duty ratio according to the actual rotating speed;
the third judgment module compares the actual rotating speed of the target fan with the minimum expected rotating speed of the fan determined by the target PWM signal to judge whether the target fan fails or not when the first judgment module judges that the target fan fails; and/or the fourth judging module compares the target PWM signal duty ratio of the target fan with the maximum expected PWM signal duty ratio determined by the actual rotating speed to judge whether the target fan fails or not when the first judging module judges that the target fan fails;
and the warning module is used for sending out a fault warning of the target fan when the target fan fails.
Example 4
The embodiment of the application provides a medium for realizing a server fan state monitoring method, wherein the medium for realizing the server fan state monitoring method stores at least one instruction, and reads and executes the instruction to realize the server fan state monitoring method.
Firstly judging whether a target PWM signal of a target fan reaches a preset duty ratio threshold value and/or whether an actual rotating speed reaches a preset second rotating speed threshold value; if so, determining that the error rate between the expected fan rotating speed of the PWM signal and the actual fan rotating speed does not influence the fan fault determination, and determining whether the fan is in fault by comparing the actual fan rotating speed with the minimum expected fan rotating speed determined by the target PWM signal duty ratio and/or determining whether the fan is in fault by comparing the target PWM signal duty ratio with the maximum expected PWM signal duty ratio determined by the actual rotating speed; if not, the error rate between the expected fan rotating speed of the PWM signal and the actual fan rotating speed is considered to influence the fan fault judgment, and the relation between the actual fan rotating speed and the first rotating speed threshold value is compared to judge whether the fan is in fault or not, namely the fan is considered to be in fault when the fan cannot be driven to rotate by the PWM signal.
In conclusion, the sensitivity of fan fault alarming can be guaranteed, and the false alarm of fan faults is avoided.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical 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, devices 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. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A server fan state monitoring method is characterized by comprising the following steps:
monitoring a target PWM signal for controlling a target fan speed;
collecting the actual rotating speed of a target fan;
judging whether a target PWM signal of the target fan reaches a preset duty ratio threshold value and/or whether the actual rotating speed reaches a preset second rotating speed threshold value;
otherwise, when the actual rotating speed is lower than a preset first rotating speed threshold value, performing fault warning on the target fan;
if so, calculating the minimum expected fan rotating speed corresponding to the target PWM signal duty ratio, and performing fault warning on the target fan when the actual rotating speed is lower than the minimum expected fan rotating speed; or calculating the maximum expected PWM signal duty ratio corresponding to the actual rotating speed, and performing target fan fault warning when the target PWM signal duty ratio is larger than the maximum expected PWM signal duty ratio.
2. The server fan status monitoring method according to claim 1, wherein the duty cycle threshold is obtained by:
setting a threshold value of a fan rotating speed error rate;
traversing the PWM signal duty ratio of the rotating speed of the fan for multiple times, and acquiring the actual rotating speed of the fan for multiple times under the condition of the same PWM signal duty ratio;
and counting whether the error rates of the collected actual rotating speed of the fan and the expected rotating speed of the fan corresponding to the PWM signals are both smaller than the threshold value of the error rate of the rotating speed of the fan under the condition of the duty ratio of each PWM signal, if so, selecting the minimum PWM signal from the qualified PWM signals as the threshold value of the duty ratio.
3. The server fan condition monitoring method according to claim 1, wherein the manner of obtaining the second rotational speed threshold is:
setting a PWM signal duty ratio error rate threshold;
traversing the fan rotating speed within the fan rotating speed range as a target rotating speed, and controlling the PWM signal duty ratio of the fan rotating speed for multiple times to reach the target rotating speed;
and counting whether error rates of the duty ratios of the utilized PWM signals and the expected PWM signal duty ratios corresponding to the target rotating speed are both smaller than the threshold value of the error rate of the duty ratios of the PWM signals when the target rotating speed is reached, if so, selecting the minimum target rotating speed from the qualified target rotating speeds as the second rotating speed threshold value.
4. The server fan state monitoring method according to claim 2 or 3, wherein fan experiments with different service lives are used to obtain a duty ratio threshold value or a second rotation speed threshold value, and a fitting relation between the duty ratio threshold value or the second rotation speed threshold value and the service life of the fan is obtained;
and acquiring and configuring a duty ratio threshold or a second rotating speed threshold for carrying out abnormal alarm on the target fan according to the actual service life of the target fan and the fitting relation.
5. The server fan status monitoring method according to claim 1, wherein the first rotational speed threshold is used to correct the effect of abnormal fan rotation driven by airflow generated by other fans.
6. The server fan condition monitoring method according to claim 1, wherein the calculating the minimum expected fan speed corresponding to the target PWM signal duty cycle comprises:
recording the mapping relation between the duty ratio of the PWM signal and the error rate of the rotating speed of the fan;
acquiring a target fan rotating speed error rate according to the target PWM signal duty ratio;
the corresponding expected fan rotating speed is obtained from the target PWM signal duty ratio,
the minimum expected fan speed is obtained from the expected fan speed (1-target fan speed error rate).
7. The server fan condition monitoring method according to claim 1, wherein the calculating the maximum expected PWM signal duty cycle corresponding to the actual rotational speed comprises:
recording the mapping relation between the actual rotating speed and the rotating speed error rate of the fan;
acquiring a target fan rotating speed error rate according to the implementation rotating speed;
the corresponding expected duty ratio of the PWM signal is obtained from the implementation rotating speed,
the maximum expected PWM signal duty cycle is obtained from the expected PWM signal duty cycle (1+ target fan speed error rate).
8. A server fan condition monitoring device, comprising: the PWM signal monitoring module monitors PWM signals for driving fans in the server;
the rotating speed acquisition module acquires the actual rotating speed of the fan;
the first judgment module is used for judging whether a target PWM signal of a target fan reaches a preset duty ratio threshold value and/or whether an actual rotating speed reaches a preset second rotating speed threshold value;
the second judgment module compares the actual rotating speed of the target fan with the first rotating speed threshold value to judge whether the target fan fails or not when the first judgment module judges that the target fan fails;
the third judgment module compares the actual rotating speed of the target fan with the minimum expected rotating speed of the fan determined by the target PWM signal to judge whether the target fan fails or not when the first judgment module judges that the target fan fails; and/or the fourth judging module compares the target PWM signal duty ratio of the target fan with the maximum expected PWM signal duty ratio determined by the actual rotating speed to judge whether the target fan fails or not when the first judging module judges that the target fan fails;
and the warning module is used for sending out a fault warning of the target fan when the target fan fails.
9. The server fan condition monitoring device according to claim 8, further comprising: a first calculation module that calculates a minimum expected fan speed from a target PWM signal; and/or the second calculation module calculates the maximum expected PWM signal duty ratio according to the actual rotating speed.
10. A medium for implementing a server fan status monitoring method, wherein the medium for implementing the server fan status monitoring method stores at least one instruction, and reads and executes the instruction to implement the server fan status monitoring method according to any one of claims 1 to 7.
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| CN115033461A (en) * | 2022-08-09 | 2022-09-09 | 苏州浪潮智能科技有限公司 | Fan monitoring method, system, device, server and readable storage medium |
| CN115315067A (en) * | 2022-09-19 | 2022-11-08 | 广东汉为信息技术有限公司 | Circuit board cooling fan rotating speed control method, storage medium and circuit board |
| CN117271272A (en) * | 2023-11-22 | 2023-12-22 | 湖南博匠信息科技有限公司 | BMC-based fan in-place state monitoring method and system |
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| CN115315067A (en) * | 2022-09-19 | 2022-11-08 | 广东汉为信息技术有限公司 | Circuit board cooling fan rotating speed control method, storage medium and circuit board |
| CN115315067B (en) * | 2022-09-19 | 2023-10-20 | 广东汉为信息技术有限公司 | Circuit board cooling fan rotating speed control method, storage medium and circuit board |
| CN117271272A (en) * | 2023-11-22 | 2023-12-22 | 湖南博匠信息科技有限公司 | BMC-based fan in-place state monitoring method and system |
| CN117271272B (en) * | 2023-11-22 | 2024-02-02 | 湖南博匠信息科技有限公司 | BMC-based fan in-place state monitoring method and system |
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