CN109185210A - A kind of hot-plug fan module is delayed the method and device powered on afterwards in place - Google Patents
A kind of hot-plug fan module is delayed the method and device powered on afterwards in place Download PDFInfo
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- CN109185210A CN109185210A CN201811257098.3A CN201811257098A CN109185210A CN 109185210 A CN109185210 A CN 109185210A CN 201811257098 A CN201811257098 A CN 201811257098A CN 109185210 A CN109185210 A CN 109185210A
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- fan
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- pulse width
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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
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
It is delayed afterwards in place the method and device powered on present invention discloses a kind of hot-plug fan module, method includes that fan control module generates one for detecting blower module detection signal whether in place, the state of CPU timing acquisition detection signal, judge whether blower module is in place according to the state of detection signal, if in place, CPU controls fan control module first not to blower module output pulse width modulated signal, then controls the pulse width modulating signal that fan control module is gradually increased to blower module output duty cycle.The present invention rises the voltage of blower module slowly by the pulse width modulating signal gradually increased to blower module output duty cycle, avoids the generation of surge.
Description
Technical field
The present invention relates to a kind of technical field of the computer network, more particularly, to a kind of hot-plug fan module it is in place after prolong
The method and device of Shi Shang electricity.
Background technique
With the continuous development of network technology, people's lives increasingly be unable to do without network, propose to the stability of network
Higher requirement.Network ensures the stability of network in establishment process frequently with redundancy, as power supply redundancy, fan are superfluous
It is remaining etc..The network equipments such as power supply, fan are required to support hot plug, i.e., can plug redundancy mould when equipment works normally
Block.Since redundant module causes current break during plug, surge is easily caused, redundant module is ultimately caused
Damage.
In order to avoid redundant module causes surge in swapping process, in the prior art frequently with dedicated hot plug chip
Prevent the generation of surge.Although the generation of surge can be prevented using dedicated hot plug chip, dedicated hot plug is introduced
On the one hand chip increases design cost, such as increase Material Cost, on the other hand increases the complexity of circuit design.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of hot-plug fan module is provided in place afterwards in delay
The method and device of electricity.
To achieve the above object, the following technical solutions are proposed by the present invention: a kind of hot-plug fan module is in place afterwards in delay
The method of electricity, includes the following steps:
S100, fan control module generate one for detecting blower module detection signal whether in place；
The state of signal is detected described in S200, CPU timing acquisition；
Whether according to the state of the detection signal to judge blower module in place by S300, CPU, if in place, thening follow the steps
Otherwise S400~S500 executes step S200~S300；
S400, CPU control fan control module not to fan output pulse width modulated signal；
The pulse width modulating signal that S500, CPU control fan control module are gradually increased to fan output duty cycle.
Preferably, the fan is not in place when the detection signal is high level, and the detection signal is low level when institute
It is in place to state fan.
Preferably, the duty ratio of pulse width modulating signal increases every preset time, until pulse width modulating signal
Duty ratio increase to 100%.
Preferably, the preset time is 100ms.
It is delayed afterwards in place the device powered on present invention further teaches a kind of hot-plug fan module, including
Fan control module, for generating a detection blower module detection signal whether in place and being used for blower module
Input pulse width modulated signal；
CPU judges that fan is for detecting the state of signal described in timing acquisition, and according to the state of the detection signal
It is no in place, and fan control module is first controlled not to fan output pulse width modulated signal when fan is in place, then controls wind
The pulse width modulating signal that fan control module is gradually increased to fan output duty cycle.
Preferably, the fan is not in place when the detection signal is high level, and the detection signal is low level when institute
It is in place to state fan.
Preferably, the fan control module includes
Signal generator module is detected, for generating one for detecting blower module detection signal whether in place；
Output of pulse signal module is believed for not modulating to blower module output pulse width first when blower module is in place
Number, the pulse width modulating signal then gradually increased again to blower module output duty cycle.
Preferably, the output of pulse signal module increases the duty ratio of pulse width modulating signal every preset time,
Until the duty ratio of pulse width modulating signal increases to 100%.
Preferably, the preset time is 100ms.
The beneficial effects of the present invention are:
The pulse width modulation letter that fan control module is gradually increased to blower module output duty cycle is controlled by CPU
Number, slowly increase the voltage of fan, effectively avoid the generation of surge, it is not necessary that dedicated hot plug chip is separately provided, saves
Design cost avoids complicated circuit design.
Detailed description of the invention
Fig. 1 is flow chart of the method for the present invention schematic diagram；
Fig. 2 is that the device of the invention structural diagrams are intended to.
Specific embodiment
Below in conjunction with attached drawing of the invention, clear, complete description is carried out to the technical solution of the embodiment of the present invention.
A kind of disclosed hot-plug fan module is delayed the method powered on afterwards in place, by defeated to blower module
The pulse width modulating signal that duty ratio gradually increases out rises the voltage of fan slowly, avoids the generation of surge.
The method powered on as shown in Figure 1, a kind of disclosed hot-plug fan module is delayed afterwards in place, including such as
Lower step:
S100, fan control module generate one for detecting blower module detection signal whether in place；
Specifically, as shown in Fig. 2, being typically provided with CPU and fan control module, fan control module in cassete exchange machine
On the one hand for monitoring revolving speed and temperature of blower module etc., on the other hand it is also used to adjust the revolving speed of blower module.When implementation,
Fan control module exports PWM (Pulse Width Modulation, pulse width modulation) signal, fan mould to blower module
Block realizes rotation by the way that pwm signal is converted to corresponding voltage.In order to adjust the revolving speed of blower module, fan control module is logical
The duty ratio of pwm signal is overregulated to adjust the revolving speed of blower module, duty ratio is smaller, and the input voltage of blower module is smaller,
Rotation speed of the fan is slower, conversely, duty ratio is bigger, the input voltage of blower module is higher, and rotation speed of the fan is bigger.When duty ratio reaches
When 100%, the input voltage of blower module reaches maximum value, and rotation speed of the fan is most fast.
A speed feedback signal (TACH signal) is also exported in blower module rotation process to fan control module, fan control
Molding root tuber calculates the revolving speed of blower module according to speed feedback signal (TACH signal).
Under regular situation, surge can be generated after blower module insertion, in order to avoid the generation of surge, the present invention passes through first
Fan control module generates detection signal (Present), whether in place is used to detect blower module.In the present embodiment, inspection
When survey signal is high level, indicate that blower module is not in place.Signal can be will test when blower module insertion to be dragged down by high level
To low level, i.e., when detection signal is low level, indicate that blower module is in place.
The state of signal is detected described in S200, CPU timing acquisition；
Whether according to the state of the detection signal to judge blower module in place by S300, CPU, if in place, thening follow the steps
Otherwise S400~S500 executes step S200~S300；
S400, CPU control fan control module not to blower module output pulse width modulated signal；
The pulse width modulation letter that S500, CPU control fan control module are gradually increased to blower module output duty cycle
Number.
Specifically, CPU is communicated with fan control module and is connect, can timing acquisition detection letter from fan control module
Number state, i.e., timing acquisition detection signal be high level or low level.CPU further judges according to the state of detection signal
Whether blower module is in place, i.e., when the detection signal of acquisition is high level, then blower module is not in place, and CPU continues to obtain inspection
Survey the state of signal；When the detection signal of acquisition is low level, then blower module is in place.
Further, when CPU judges that blower module is in place, control fan control module first is not exported to blower module
Pwm signal.Since fan control module does not input pwm signal to it after blower module is in place, blower module is in no confession
The state of electricity.Finally, the pwm signal that CPU control fan control module is gradually increased to blower module input duty cycle, makes fan
The case where voltage of module slowly increases, and avoids the occurrence of electric current abrupt transients, so as to avoid the generation of surge.
When implementation, the duty ratio of pwm signal is increased every preset time, until the duty of pulse width modulating signal
Than increasing to 100%.If CPU controls the pwm signal that fan control module is 20% to blower module input duty cycle, at this point,
Blower module revolving speed is slow, be spaced preset time after, CPU control fan control module to blower module input duty cycle be 40%
Pwm signal, blower module revolving speed is relatively fast, and so on, until CPU control fan control module to blower module input
The pwm signal that duty ratio is 100%, blower module revolving speed reach maximum.The preferred 100ms of preset time, naturally it is also possible to according to
Actual demand is set.
Method of the present invention controls fan control module by CPU and gradually increases to blower module output duty cycle
Pulse width modulating signal, slowly increase the voltage of fan, effectively avoid the generation of surge, it is dedicated without being separately provided
Hot plug chip, has saved design cost, avoids complicated circuit design.
It is delayed afterwards in place the device powered on as shown in Fig. 2, the present invention also discloses a kind of hot-plug fan module, including
Fan control module, for generating a detection blower module detection signal whether in place and being used for blower module
Input pulse width modulated signal；
CPU judges that fan is for detecting the state of signal described in timing acquisition, and according to the state of the detection signal
It is no in place, and fan control module is first controlled not to fan output pulse width modulated signal when fan is in place, then controls wind
The pulse width modulating signal that fan control module is gradually increased to fan output duty cycle.
Specifically, fan control module includes detection signal generator module and output of pulse signal module, wherein detection letter
Number generation module is used to generate detection fan detection signal whether in place, and output of pulse signal module is for blower module
Input pwm signal.In the present embodiment, when detection signal is high level, indicate that blower module is not in place.When blower module insertion
Signal can be will test, low level is pulled low to by high level, i.e., when detection signal is low level, indicate that blower module is in place.
Further, CPU judges whether blower module is in place according to the state of detection signal.When CPU judges blower module
When in place, control wave output module is not to blower module output pwm signal first.Finally, CPU control wave is defeated
Module aweather fans the pwm signal that module input duty cycle is gradually increased out, increases the voltage of blower module slowly, avoids wave
The generation gushed.When implementation, the duty ratio of pwm signal increases preset value every preset time, until pulse width modulating signal
Duty ratio increases to 100%.The preferred 100ms of preset time.
Device of the present invention can avoid blower module hot plug without additionally increasing dedicated hot plug chip
The generation of surge, has saved Material Cost in journey.
Technology contents and technical characteristic of the invention have revealed that as above, however those skilled in the art still may base
Make various replacements and modification without departing substantially from spirit of that invention, therefore, the scope of the present invention in teachings of the present invention and announcement
It should be not limited to the revealed content of embodiment, and should include various without departing substantially from replacement and modification of the invention, and be this patent Shen
Please claim covered.
Claims (9)
- A kind of method powered on 1. hot-plug fan module is delayed afterwards in place, which comprises the steps of:S100, fan control module generate one for detecting blower module detection signal whether in place；The state of signal is detected described in S200, CPU timing acquisition；Whether according to the state of the detection signal to judge blower module in place by S300, CPU, if in place, thening follow the steps S400 Otherwise~S500 executes step S200~S300；S400, CPU control fan control module not to fan output pulse width modulated signal；The pulse width modulating signal that S500, CPU control fan control module are gradually increased to fan output duty cycle.
- 2. the method according to claim 1, wherein the fan does not exist when the detection signal is high level Position, the fan is in place when the detection signal is low level.
- 3. the method according to claim 1, wherein the duty ratio of pulse width modulating signal is every preset time Increased, until the duty ratio of pulse width modulating signal increases to 100%.
- 4. according to the method described in claim 3, it is characterized in that, the preset time is 100ms.
- The device powered on 5. a kind of hot-plug fan module is delayed afterwards in place, which is characterized in that includingFan control module, for generating detection blower module detection signal whether in place and for being inputted to blower module Pulse width modulating signal；CPU, for described in timing acquisition detect signal state, and according to it is described detection signal state judge fan whether Position, and fan control module is first controlled not to fan output pulse width modulated signal when fan is in place, then controls fan control The pulse width modulating signal that molding block is gradually increased to fan output duty cycle.
- 6. device according to claim 5, which is characterized in that the fan does not exist when the detection signal is high level Position, the fan is in place when the detection signal is low level.
- 7. device according to claim 5, which is characterized in that the fan control module includesSignal generator module is detected, for generating one for detecting blower module detection signal whether in place；Output of pulse signal module, for when blower module is in place first not to blower module output pulse width modulated signal, Then the pulse width modulating signal gradually increased again to blower module output duty cycle.
- 8. device according to claim 7, which is characterized in that the output of pulse signal module increases every preset time The duty ratio of pulse width modulating signal, until the duty ratio of pulse width modulating signal increases to 100%.
- 9. device according to claim 8, which is characterized in that the preset time is 100ms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811257098.3A CN109185210A (en) | 2018-10-26 | 2018-10-26 | A kind of hot-plug fan module is delayed the method and device powered on afterwards in place |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811257098.3A CN109185210A (en) | 2018-10-26 | 2018-10-26 | A kind of hot-plug fan module is delayed the method and device powered on afterwards in place |
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| Publication Number | Publication Date |
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| CN109185210A true CN109185210A (en) | 2019-01-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811257098.3A Pending CN109185210A (en) | 2018-10-26 | 2018-10-26 | A kind of hot-plug fan module is delayed the method and device powered on afterwards in place |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074132A (en) * | 2021-03-25 | 2021-07-06 | 山东英信计算机技术有限公司 | Regulation and control method and system for preventing hot plug fan from reversing and computer storage medium |
| CN113467537A (en) * | 2021-05-25 | 2021-10-01 | 中国电子科技集团公司第四十一研究所 | Temperature real-time monitoring circuit based on DSP |
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| US20040104695A1 (en) * | 2000-08-30 | 2004-06-03 | Alexander Hahn | Direct current machine with a controllable arrangement for limiting current |
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| TW201216025A (en) * | 2010-10-11 | 2012-04-16 | Hon Hai Prec Ind Co Ltd | Apparatus and method for controlling fan speed |
| CN105443408A (en) * | 2015-11-27 | 2016-03-30 | 浪潮(北京)电子信息产业有限公司 | Fan system |
| CN108181974A (en) * | 2018-01-24 | 2018-06-19 | 郑州云海信息技术有限公司 | A kind of server fan soft start control method and system |
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2018
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| US20040104695A1 (en) * | 2000-08-30 | 2004-06-03 | Alexander Hahn | Direct current machine with a controllable arrangement for limiting current |
| CN1599231A (en) * | 2003-09-17 | 2005-03-23 | 华为技术有限公司 | Monitoring method and device of radiation system |
| CN101192053A (en) * | 2007-12-12 | 2008-06-04 | 福建星网锐捷网络有限公司 | Modularized equipment hot-plugging module powering method and hot-plug control circuit |
| TW201216025A (en) * | 2010-10-11 | 2012-04-16 | Hon Hai Prec Ind Co Ltd | Apparatus and method for controlling fan speed |
| CN105443408A (en) * | 2015-11-27 | 2016-03-30 | 浪潮(北京)电子信息产业有限公司 | Fan system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113074132A (en) * | 2021-03-25 | 2021-07-06 | 山东英信计算机技术有限公司 | Regulation and control method and system for preventing hot plug fan from reversing and computer storage medium |
| CN113467537A (en) * | 2021-05-25 | 2021-10-01 | 中国电子科技集团公司第四十一研究所 | Temperature real-time monitoring circuit based on DSP |
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Application publication date: 20190111 |
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