CN113074132A - Regulation and control method and system for preventing hot plug fan from reversing and computer storage medium - Google Patents
Regulation and control method and system for preventing hot plug fan from reversing and computer storage medium Download PDFInfo
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- CN113074132A CN113074132A CN202110323068.3A CN202110323068A CN113074132A CN 113074132 A CN113074132 A CN 113074132A CN 202110323068 A CN202110323068 A CN 202110323068A CN 113074132 A CN113074132 A CN 113074132A
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- fan
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- newly inserted
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
Abstract
The invention provides a regulating method, a regulating system and a computer storage medium for preventing a hot plug fan from reversing, wherein the method comprises the steps of regulating the duty ratio of a fan participating in regulation and control in a current wind field to be not more than a set threshold value when a newly-inserted fan is detected to exist in the wind field; controlling a newly inserted fan to rotate to a specified wind speed within a set time threshold; and restoring the participating regulating fan to the previous regulating strategy. According to the invention, the newly inserted fan is obtained in time by polling and detecting the in-place signal of the fan, duty ratio control is carried out on the rest fans in the wind field, and meanwhile, the rotating speed of the newly inserted fan is pulled up, the condition that the wind field is readjusted without changing the structure is avoided, the problem of fan reversion is solved, and the redundancy design capability of the server is improved.
Description
Technical Field
The invention relates to the technical field of server heat dissipation, in particular to a method and a system for regulating and controlling reverse rotation of a hot-plug fan and a storage medium.
Background
The server can produce very high heat at the course of the work, needs a large amount of fans to provide the heat dissipation, needs the fan to support the hot plug under the partial environment, but the fan can produce the backpressure at the rotation in-process, when wherein newly-increased fan inserts, the higher backpressure of the velocity of wind is stronger in the wind field, can cause the fan can not the corotation, takes place the reversal phenomenon.
When the fan reverses under the common condition, the problem is solved by changing the structural design, backflow is increased, the fan is prevented from reversing, and the mode is high in cost.
Disclosure of Invention
The invention provides a regulating method, a regulating system and a storage medium for preventing a hot-plug fan from reversing, which are used for solving the problem of higher cost by changing structural design when the fan reverses in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a regulation and control method for preventing reverse rotation of a hot-plug fan, which comprises the following steps:
when detecting that a newly inserted fan exists in a wind field, adjusting the duty ratio of the fan participating in regulation and control in the current wind field to be not more than a set threshold value;
controlling a newly inserted fan to rotate to a specified wind speed within a set time threshold;
and recovering the participating regulating fan to the state before regulation.
Further, the specific process of detecting the existence of the newly inserted fan in the wind field is as follows:
polling an in-place signal of the detection fan;
after the BMC acquires a new fan in-place signal, reading the wind speed of the fan;
when the wind speed is zero, the fan is judged to be a newly inserted fan.
Further, the fans participating in regulation and control are all fans except the newly inserted fan in the wind field.
Further, the set threshold is 90%.
Further, the participating fans include at least the fan closest to the newly inserted fan.
Further, the specific process of adjusting the duty ratio of the fan participating in regulation and control in the current wind field to be not greater than the set threshold value is as follows:
respectively calculating the distance between an in-place fan and a newly inserted fan in the wind field, and comparing the distances;
and adjusting the set threshold values to increase in sequence according to the sequence of the distances from small to large.
Further, the distance between the fan in place and the newly inserted fan in the wind field is determined by the difference between the fan IDs.
The invention provides a regulation and control system for preventing reverse rotation of a hot plug fan, which comprises:
the detection regulation and control unit is used for adjusting the duty ratio of the fan participating in regulation and control in the current wind field to be not more than a set threshold value when detecting that a newly-inserted fan exists in the wind field;
the first control unit is used for controlling the newly inserted fan to rotate to a specified wind speed within a set time threshold;
and the second control unit is used for recovering the participating regulating fan to the state before regulation.
Further, the detection regulation and control unit comprises:
the detection subunit polls an in-place signal of the detection fan; after the BMC acquires a new fan in-place signal, reading the wind speed of the fan; when the wind speed is zero, the fan is judged to be a newly inserted fan;
and the regulation subunit regulates that the duty ratio of the fan participating in regulation in the current wind field is not greater than a set threshold value.
The third aspect of the present invention provides a computer storage medium, where a computer instruction is stored in the computer storage medium, and when the computer instruction runs on a regulation and control system for preventing a hot plug fan from reversing, the regulation and control system for preventing the hot plug fan from reversing executes a regulation and control method for preventing the hot plug fan from reversing.
The regulation and control system for preventing the reverse rotation of the hot-plug fan in the second aspect of the invention can realize the methods in the first aspect and the implementation manners of the first aspect, and achieve the same effect.
The effect provided in the summary of the invention is only the effect of the embodiment, not all the effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
according to the invention, the newly inserted fan is obtained in time by polling and detecting the in-place signal of the fan, duty ratio control is carried out on the rest fans in the wind field, and meanwhile, the rotating speed of the newly inserted fan is pulled up, the condition that the wind field is readjusted without changing the structure is avoided, the problem of fan reversion is solved, and the redundancy design capability of the server is improved.
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 creative efforts.
FIG. 1 is a schematic flow diagram of the process of the present invention;
fig. 2 is a schematic diagram of the system 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.
As shown in fig. 1, the method for regulating and controlling reverse rotation of a hot-plug fan of the present invention comprises the following steps:
s1, when detecting that a newly inserted fan exists in the wind field, adjusting the duty ratio of the fan participating in regulation and control in the current wind field to be not more than a set threshold value;
s2, controlling the newly inserted fan to rotate to the specified wind speed within the set time threshold;
and S3, restoring the participating regulating fan to the state before regulation.
In step S1, the specific process of detecting that a newly inserted fan exists in the wind farm is as follows:
the BMC polls and detects an in-place signal of the fan;
when a FAN FAN0 is accessed into the system, the BMC acquires a new FAN in-place signal S and reads the wind speed of the FAN;
when the wind speed is zero, the fan is judged to be a newly inserted fan.
One implementation mode of participating in regulating and controlling the fan is as follows: the fans participating in regulation and control are all fans except the newly inserted fan in the wind field. The participating fans are recorded at the BMC and identified in the code in the form of fanN (0-n), since all fans are in the same wind farm.
After determining that there is a newly inserted FAN, the BMC adjusts the Duty cycle values of all FANs FAN1-FANn in the current wind farm except the newly inserted FAN to 90% Fan Duty.
Another implementation way of participating in regulating and controlling the fan is as follows: the participating fans include at least the fan closest to the newly inserted fan. The distance between the fan in place and the newly inserted fan in the wind field is determined by the difference between the fan IDs set based on the actual arrangement position of the fans, and if the newly inserted fan is fan3, the fans closest to it are fan2 and fan 4.
At this time, the specific process of adjusting the duty ratio of the fan participating in regulation and control in the current wind field to be not more than the set threshold value is as follows: respectively calculating the distance between an in-place fan and a newly inserted fan in the wind field, and comparing the distances; and adjusting the set threshold values to increase in sequence according to the sequence of the distances from small to large. If the set threshold is adjusted to 80% nearest, 85% further away, the duty cycle is greater or not adjusted further away. The wind pressure borne by the newly inserted fan is in a direct proportion relation with the starting time and the duty ratios of other fans, namely, the shorter the time is, the smaller the duty ratio is, the smaller the pressure borne is, and the easier the starting is. When the set threshold is set to 90% and the time threshold is set to 5 seconds in step S2, the normal cranking of the newly inserted fan can be realized.
In step S3, there is a flag bit after the newly inserted fan is turned on, and after the BMC detects the flag, the BMC controls the other fans to return to the original fan strategy.
As shown in fig. 2, the regulation and control system for preventing the reverse rotation of the hot-plug fan of the invention comprises a detection and control unit 1, a first control unit 2 and a second control unit 3.
When the detecting and regulating unit 1 detects that a newly inserted fan exists in the wind field, the duty ratio of the fan participating in regulation and control in the current wind field is regulated to be not more than a set threshold value.
The first control unit 2 controls the newly inserted fan to be rotated up to a designated wind speed within a set time threshold.
The second control unit 3 restores the participating regulation fan to the state before regulation.
The detection and regulation unit 1 comprises a detection subunit 11 and a regulation subunit 12.
The detection subunit 11 polls the in-place signal of the detection fan; after the BMC acquires a new fan in-place signal, reading the wind speed of the fan; when the wind speed is zero, the fan is judged to be a newly inserted fan;
the regulation subunit 12 regulates that the duty ratio of the fan participating in regulation in the current wind field is not greater than a set threshold.
The invention also provides a computer storage medium, wherein a computer instruction is stored in the computer storage medium, and when the computer instruction runs on the regulation and control system for preventing the hot plug fan from reversing, the regulation and control system for preventing the hot plug fan from reversing executes the regulation and control method for preventing the hot plug fan from reversing.
The scheme of the invention can be applied to various servers. The number of the server fans is related to the heat dissipation requirements of products, the number of the fans of the products with different models is different, the fans are generally four, the current height of the server is also 8, and the fans are transversely distributed in parallel in the case to provide air cooling heat dissipation for the CPU. The scheme is suitable for the server and can also be applied to anti-reversion design under various fan regulation and control scenes in the chassis of non-server products.
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 (10)
1. A regulation and control method for preventing reverse rotation of a hot-plug fan is characterized by comprising the following steps:
when detecting that a newly inserted fan exists in a wind field, adjusting the duty ratio of the fan participating in regulation and control in the current wind field to be not more than a set threshold value;
controlling a newly inserted fan to rotate to a specified wind speed within a set time threshold;
and recovering the participating regulating fan to the state before regulation.
2. The method for regulating and controlling reverse rotation of a hot-plug fan according to claim 1, wherein the specific process of detecting the existence of a newly inserted fan in a wind field comprises:
polling an in-place signal of the detection fan;
after the BMC acquires a new fan in-place signal, reading the wind speed of the fan;
when the wind speed is zero, the fan is judged to be a newly inserted fan.
3. The method as claimed in claim 1, wherein the fans involved in the regulation are all fans except a newly inserted fan in a wind field.
4. The method as claimed in claim 3, wherein the threshold is 90%.
5. The method as claimed in claim 1, wherein the fan involved in the regulation comprises at least a fan nearest to a newly inserted fan.
6. The method for regulating the reverse rotation of the hot-plug fan according to claim 5, wherein the specific process of regulating the duty ratio of the fan participating in regulation and control in the current wind field to be not more than the set threshold value comprises the following steps:
respectively calculating the distance between an in-place fan and a newly inserted fan in the wind field, and comparing the distances;
and adjusting the set threshold values to increase in sequence according to the sequence of the distances from small to large.
7. The method as claimed in claim 6, wherein the distance between the fan in place and the newly inserted fan in the wind field is determined by the difference between the fan IDs.
8. A regulation and control system for preventing reverse rotation of a hot-plug fan is characterized by comprising:
the detection regulation and control unit is used for adjusting the duty ratio of the fan participating in regulation and control in the current wind field to be not more than a set threshold value when detecting that a newly-inserted fan exists in the wind field;
the first control unit is used for controlling the newly inserted fan to rotate to a specified wind speed within a set time threshold;
and the second control unit is used for recovering the participating regulating fan to the state before regulation.
9. The system of claim 8, wherein the detection and control unit comprises:
the detection subunit polls an in-place signal of the detection fan; after the BMC acquires a new fan in-place signal, reading the wind speed of the fan; when the wind speed is zero, the fan is judged to be a newly inserted fan;
and the regulation subunit regulates that the duty ratio of the fan participating in regulation in the current wind field is not greater than a set threshold value.
10. A computer storage medium having computer instructions stored therein, wherein the computer instructions, when executed on the control system for preventing reverse rotation of a hot plug fan according to claim 8 or 9, cause the control system for preventing reverse rotation of a hot plug fan to perform the control method for preventing reverse rotation of a hot plug fan according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110323068.3A CN113074132B (en) | 2021-03-25 | 2021-03-25 | Regulation and control method and system for preventing hot plug fan from reversing and computer storage medium |
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| CN202110323068.3A CN113074132B (en) | 2021-03-25 | 2021-03-25 | Regulation and control method and system for preventing hot plug fan from reversing and computer storage medium |
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| CN113074132A true CN113074132A (en) | 2021-07-06 |
| CN113074132B CN113074132B (en) | 2022-11-18 |
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Cited By (1)
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| CN113323903A (en) * | 2021-06-18 | 2021-08-31 | 广东湾区智能终端工业设计研究院有限公司 | Fan hot start method and device |
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| CN113074132B (en) | 2022-11-18 |
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