CN113254307A

CN113254307A - Method and device for determining failure of fan

Info

Publication number: CN113254307A
Application number: CN202110545914.6A
Authority: CN
Inventors: 刘佩瑶; 陈�胜; 刘全仲; 张思栋; 何林; 赵俊宝
Original assignee: China Great Wall Technology Group Co ltd
Current assignee: China Great Wall Technology Group Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-08-13

Abstract

The application provides a method for determining failure of a fan, which is applied to a fan set system with synchronous speed regulation, wherein the fan set system comprises N fans, N is not less than 3, and N is an integer; determining a reference rotation speed according to the rotation speed of each fan; and determining a failure fan in the N fans according to the rotating speed of each fan and the reference rotating speed. The method for determining the failure of the fan can simply and efficiently judge the failed fan, can be used for a synchronous speed regulation strategy or a micro-deviation fan speed regulation strategy, and is less affected by the actual specification of the fan.

Description

Method and device for determining failure of fan

Technical Field

The invention belongs to the field of fans, and particularly relates to a method and a device for determining failure of a fan.

Background

The fan is a core component for heat dissipation of the server, the power consumption of the server is increased with the performance of the server, the amount of heat generated in unit time is increased, most servers need to run continuously for 24 hours, and the server fan is required to work continuously and stably.

In the prior art, a conventional failure detection method for a server fan is to perform detection by a Baseboard Management Controller (BMC) through a fan duty table, and determine whether the fan fails by setting an allowable deviation range. However, the judgment mechanism has poor adaptability, and when the general server equipment adopts fans with different specifications under different configuration conditions or the specifications of the main fan and the standby fan have deviation, different fans cannot adopt the same set of control strategy to judge that the fans are out of service, so that the software versions are increased and are difficult to manage.

Therefore, a simple single-fan failure determination mechanism is needed to effectively determine the single-fan failure.

Disclosure of Invention

In view of this, the invention provides a method and a device for determining failure of a fan, which solves the problem that different fans need to adopt the same fan failure judgment strategy, and realizes simple judgment of single fan failure.

In a first aspect, a method for determining fan failure is provided, and is applied to a synchronous speed-regulating fan set system, where the fan set system includes N fans, N is greater than or equal to 3, and N is an integer, and the method includes: acquiring the rotating speed of each fan in the N fans; determining a reference rotation speed according to the rotation speed of each fan; and determining a failure fan in the N fans according to the rotating speed of each fan and the reference rotating speed.

According to the method for determining the failure of the fan, the self rotating speeds of the N fans in the fan set system with synchronous speed regulation are obtained to serve as the reference rotating speed, and the failed fan in the N fans is judged according to the self rotating speeds of the N fans and the reference rotating speed.

Optionally, determining the reference rotation speed by using the rotation speed of each fan includes: dividing the fan with the maximum rotating speed and the fan with the minimum rotating speed from the N fans, and calculating the average rotating speed of the rest fans; and taking the average rotating speed as the reference rotating speed. In the implementation mode, the average value of the rotating speeds of the fans is calculated by removing the rotating speeds of the fans with the high and large rotating speeds and the minimum fan without N fan types, so that the influence of the overspeed of the fan and the failure working condition of a single fan on the accuracy of a failure judgment mechanism is reduced.

Optionally, determining a failed fan of the N fans by using the rotation speed of each fan and the reference rotation speed, includes: respectively calculating the rotation speed difference between the rotation speed of each fan and the reference rotation speed; when the rotating speed difference of the first fan in the N fans is larger than or equal to a preset first threshold value, the first fan is determined to be a failure fan, and the first fan is any one of the N fans. In the implementation mode, the rotation speed difference of each fan is calculated by utilizing the rotation speed of each fan and the reference rotation speed, whether the rotation speed difference meets the preset first threshold condition or not is judged by setting a reasonable preset first threshold, and when the rotation speed difference meets the first threshold condition, the fan can be judged to be a failed fan.

Optionally, before determining the reference rotation speed according to the rotation speed of each fan, the method further includes: determining whether the rotating speed of each fan in the N fans is greater than or equal to a preset second threshold value; and when the rotating speed of a second fan in the N fans is greater than or equal to a preset second threshold value, determining the reference rotating speed according to the rotating speed of each fan, wherein the second fan is any one of the N fans. In the implementation method, before calculating the reference rotating speed, whether the rotating speed of each fan is greater than or equal to a preset second threshold is judged, when the rotating speed of the fan is greater than or equal to the preset second threshold, the rotating speed meets the lowest rotating speed is judged, and when the rotating speed of the fan is less than the second threshold, the next step of judgment is carried out, and the alarm is directly carried out.

Optionally, obtaining the rotation speed of each fan of the N fans includes: acquiring an FG signal of each fan in the N fans; the rotation speed of each fan in the N fans is determined by the FG signal of each fan.

In a second aspect, there is provided an apparatus for determining a fan failure, the apparatus comprising at least one processor and a memory, the at least one processor being configured to perform the method of the first aspect above or any possible implementation manner of the first aspect.

In a third aspect, there is provided a means for determining a fan failure, the means for determining a fan failure comprising at least one processor and an interface circuit, the at least one processor being configured to perform the method of the first aspect above or any possible implementation manner of the first aspect.

In a fourth aspect, there is provided a device for determining a fan failure, comprising the means for determining a fan failure as provided in any one of the second or third aspects above.

In a fifth aspect, a computer program product is provided, the computer program product comprising a computer program for performing the method of the first aspect or any possible implementation form of the first aspect, when the computer program is executed by a processor.

A sixth aspect provides a computer readable storage medium having stored thereon a computer program for performing the method of the first aspect or any possible implementation manner of the first aspect when the computer program is executed.

In a seventh aspect, there is provided a chip or an integrated circuit, comprising: a processor configured to invoke and run the computer program from the memory, so that the device on which the chip or the integrated circuit is installed performs the method of the first aspect or any possible implementation manner of the first aspect.

For technical effects of the apparatus provided by the present application, reference may be made to the technical effects of the first aspect or each implementation manner of the first aspect, and details are not described here.

Compared with the prior art, the invention has the beneficial effects that:

the method can be used for a synchronous speed regulation strategy or a micro-deviation fan speed regulation strategy, is slightly influenced by the actual specification of the fan, and can be used for simply and efficiently judging the failed fan.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a flow chart illustrating an implementation of a method 100 for determining a fan failure according to an embodiment of the present disclosure;

FIG. 2 illustrates a schematic block diagram of an apparatus 200 for determining a fan failure in an embodiment of the present application;

FIG. 3 illustrates a schematic block diagram of an apparatus 300 for determining a fan failure in accordance with an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

First, before describing embodiments of the method and apparatus for determining fan failure provided herein, some of the terms that will be referred to immediately below will be described. When the present application refers to the terms "first", "second", etc. ordinal numbers only for descriptive purposes, it is not to be understood as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

These and other aspects of embodiments of the invention will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the invention have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the invention may be practiced, but it is understood that the scope of the embodiments of the invention is not limited correspondingly. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

Firstly, before introducing the method for determining the failure of the fan provided by the embodiment of the application, an application scenario of the application is briefly introduced, and the method provided by the application is used for a fan set system for synchronous speed regulation, wherein the fan set system comprises N fans, N is not less than 3, and N is an integer.

The method for determining fan failure provided herein is described below with reference to the illustrated embodiment.

Referring to FIG. 1, a flow diagram of one embodiment of a method of determining fan failure is provided. As shown in fig. 1, the method 100 includes S101 to S103.

S101, obtaining the rotating speed of each fan in the N fans.

The method comprises the steps of firstly acquiring the rotating speed of each fan in a fan set system with synchronous speed regulation.

It will be appreciated that synchronous throttling means that the theoretical operating power of each fan in the system is consistent.

For example, when the rated rotation speed is 7500rpm, the Duty of the synchronous speed regulation is 50%, that is, 3750rpm is the theoretical operation rotation speed of the four fans.

Optionally, as a possible implementation manner, in the embodiment of the present application, the rotation speed of each fan in the N fans is obtained according to a frequency generator signal (FrequncyGenerator, FG) sent by each group of fans to the BMC. For example, when N is 4, the read FG signal is converted into FAN rotation speeds FAN1, FAN2, FAN3, and FAN 4.

And S102, determining a reference rotating speed according to the rotating speed of each fan.

In order to determine a failed fan in the fan set system, first, the reference rotation speeds of N fans in the fan set system need to be determined.

Optionally, as a possible implementation manner, in order to avoid that the maximum rotation speed or the minimum rotation speed value affects the judgment of the single fan failure, in the embodiment of the present application, the maximum rotation speed value and the minimum rotation speed value are removed from the obtained N rotation speed values, and an average value of the remaining rotation speed values is used as the reference rotation speed.

For example, when N is 4, the read FG signal is converted into FAN rotation speeds FAN1, FAN2, FAN3, and FAN 4. The rotation speed values of the remaining two fans are averaged after removing the lowest value and the highest value of the four fans, and are taken as the reference rotation speed fan (a).

When the four rotation speed values of FAN1, FAN2, FAN3 and FAN4 are equal, any one value is used as the reference rotation speed.

When two of the four rotation speed values FAN1, FAN2, FAN3 and FAN4 are equal, the average rotation speed value of the four values is calculated as the reference value.

S103, determining a failure fan in the N fans according to the rotating speed of each fan and the reference rotating speed.

In the embodiment of the present application, the failed fan of the N fans is determined according to the difference between the rotation speed of each fan and the reference rotation speed.

Optionally, as a possible implementation manner, the failed fan of the N fans is determined by presetting a first threshold.

For example, when the preset first threshold is 1000rpm, when the deviation between any one of the FAN1, FAN2, FAN3 and FAN4 and the reference speed is greater than 1000rpm, it indicates that the FAN is out of service. And sending out a fan failure early warning by the BMC to remind operation and maintenance personnel to replace the abnormal fan in time.

Alternatively, when the preset first threshold is 10% of Duty, and the deviation between any one of the rotation speed values of FAN1, FAN2, FAN3 and FAN4 and the reference rotation speed is greater than 10% of Duty, the FAN is indicated to be out of service. And sending out a fan failure early warning by the BMC to remind operation and maintenance personnel to replace the abnormal fan in time.

It should be noted that the preset first threshold is set according to specific situations, and the embodiment of the present application is not limited.

In the embodiment, the self rotating speeds of the N fans in the fan group system with synchronous speed regulation are obtained as the reference rotating speeds, and the failed fan in the N fans is judged according to the self rotating speeds of the N fans and the reference rotating speeds.

In the embodiment of the application, in order to form a complete protection system, a minimum rotating speed alarm is set as a system protection value.

Optionally, as a possible implementation manner, before the reference rotation speed is determined according to the rotation speed of each fan in the above embodiment, it is first determined whether the rotation speed of each fan in the N fans is greater than or equal to a preset second threshold value. And when the rotating speed of the second fan in the N fans is greater than or equal to a preset second threshold value, judging that the rotating speed of the fan meets the lowest rotating speed, and judging the reference rotating speed in the next step. And when the rotating speed of the second fan in the N fans is smaller than a preset second threshold value, the fan is indicated to be failed. And sending out a fan failure early warning by the BMC to remind operation and maintenance personnel to replace the abnormal fan in time. That is, when the rotation speed of the second fan of the N fans is less than the preset second threshold, the fan is directly determined to be out of service without continuing to calculate the reference value.

It should be noted that the preset second threshold may be set according to specific situations, and the embodiment of the present application is not limited.

Fig. 2 shows a block diagram of a device for determining a fan failure provided in an embodiment of the present application, corresponding to the method for determining a fan failure described in the above embodiment, and only the part related to the embodiment of the present application is shown for convenience of description.

Referring to fig. 2, the apparatus 200 comprises a processing unit 201 for: acquiring the rotating speed of each fan in the N fans; determining a reference rotation speed according to the rotation speed of each fan; and determining a failure fan in the N fans according to the rotating speed of each fan and the reference rotating speed.

The processing unit 201 is further configured to calculate an average rotation speed of the remaining fans by dividing the fan with the maximum rotation speed and the fan with the minimum rotation speed from the N fans; the average rotation speed is set as a reference rotation speed.

The processing unit 201 is further configured to calculate a rotational speed difference between the rotational speed of each fan and the reference rotational speed, respectively.

The processing unit 201 is further configured to determine whether the rotation speed of each of the N fans is greater than or equal to a preset second threshold.

The processing unit 201 is further configured to obtain an FG signal of each of the N fans; the rotation speed of each fan in the N fans is determined by the FG signal of each fan.

An apparatus is further provided in the embodiment of the present application, and fig. 3 is a schematic structural diagram of the apparatus provided in the embodiment of the present application. As shown in fig. 3, the device 300 includes a processor 301, a memory 302, a communication interface 303, and a bus 304. The processor 301, the memory 302, the communication interface 303, and the bus 304 may communicate with each other by other means such as wireless transmission. The memory 302 is used for storing instructions, the processor 301 is used for executing the instructions stored in the memory 302, the memory 302 stores program codes 3021, and the processor 301 can call the program codes 3021 stored in the memory 302 to execute the method for determining a fan failure shown in fig. 1.

It should be understood that in the embodiments of the present application, the processor 301 may be a CPU, and the processor 301 may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or any conventional processor or the like.

The memory 302 may include both read-only memory and random access memory, and provides instructions and data to the processor 301. The memory 302 may also include non-volatile random access memory. The memory 302 may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and direct bus RAM (DR RAM).

The bus 304 may include a power bus, a control bus, a status signal bus, and the like, in addition to a data bus. But for clarity of illustration the various busses are labeled in figure 3 as busses 304.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded or executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more collections of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a Solid State Drive (SSD).

An embodiment of the present application further provides a computer readable medium for storing a computer program code, where the computer program includes instructions for executing the method for determining a fan failure according to the embodiment of the present application in the method 100 described above. The readable medium may be a read-only memory (ROM) or a Random Access Memory (RAM), which is not limited in this embodiment of the present application.

The present application also provides a computer program product comprising instructions that, when executed, cause the apparatus or device to perform operations corresponding to the method 100 described above, respectively.

An embodiment of the present application further provides a system chip, where the system chip includes: a processing unit, which may be, for example, a processor, and a communication unit, which may be, for example, an input/output interface, a pin or a circuit, etc. The processing unit can execute computer instructions to enable the chip in the charging pile to execute any method for determining the failure of the fan provided by the embodiment of the application.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A method for determining failure of a fan is applied to a fan set system with synchronous speed regulation, the fan set system comprises N fans, N is not less than 3, N is an integer, and the method is characterized by comprising the following steps:

acquiring the rotating speed of each fan in the N fans;

determining a reference rotating speed according to the rotating speed of each fan;

and determining a failure fan in the N fans according to the rotating speed of each fan and the reference rotating speed.

2. The method of claim 1, wherein said determining a reference speed using the speed of each fan comprises:

dividing the fan with the maximum rotating speed and the fan with the minimum rotating speed in the N fans, and calculating the average rotating speed of the rest fans;

and taking the average rotating speed as the reference rotating speed.

3. The method of claim 2, wherein said determining a failed fan of said N fans using said speed of each fan and said reference speed comprises:

respectively calculating the rotation speed difference between the rotation speed of each fan and the reference rotation speed;

when the rotating speed difference of a first fan in the N fans is larger than or equal to a preset first threshold value, the first fan is determined to be a failure fan, and the first fan is any one of the N fans.

4. The method of claim 1, wherein prior to determining a reference rotational speed from the rotational speed of each fan, the method further comprises:

determining whether the rotating speed of each fan in the N fans is greater than or equal to a preset second threshold value;

and when the rotating speed of a second fan in the N fans is greater than or equal to a preset second threshold value, determining a reference rotating speed according to the rotating speed of each fan, wherein the second fan is any one of the N fans.

5. The method of claim 2, wherein obtaining the rotational speed of each of the N fans comprises:

acquiring an FG signal of each fan of the N fans;

and respectively determining the rotating speed of each fan in the N fans by using the FG signal of each fan.

6. An apparatus for determining fan failure, comprising: a processor and a memory; coupled to the processor and a memory storing program instructions that, when executed by the processor, perform the method of any of claims 1 to 5.

7. An apparatus comprising the apparatus of claim 6, the apparatus to perform the method of any of claims 1-5.

8. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 5.

9. A chip, comprising: a processor for calling and running a computer program from a memory so that a device on which the chip is installed performs the method of any one of claims 1 to 5.