CN101211304A - Fan working condition detection method and detection device - Google Patents
Fan working condition detection method and detection device Download PDFInfo
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- CN101211304A CN101211304A CNA2006101715647A CN200610171564A CN101211304A CN 101211304 A CN101211304 A CN 101211304A CN A2006101715647 A CNA2006101715647 A CN A2006101715647A CN 200610171564 A CN200610171564 A CN 200610171564A CN 101211304 A CN101211304 A CN 101211304A
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Abstract
The invention discloses a method and device for testing the working condition of a fan. The method includes the following steps: firstly, the fan is controlled to jump from the lowest rotational speed to the maximum rotational speed, and the maximum rotational speed of the fan and the minimum buffer time needed by jumping change is obtained; secondly, the maximum rotational speed and the minimum buffer time are respectively compared with the preset rotating speed threshold and time threshold, thus ensuring normal operation of the fan; an early warning is sent to the fan which cannot maintain normal operation. The invention tests the accelerating performance and the maximum rotational speed of the fan through enabling the fan to complete a jumping change from the lowest rotational speed to the maximum rotational speed, and the early warning can be sent before the system fan goes wrong, thereby avoiding the impact to brought by replacing the fan after the problem occurs to the ongoing work.
Description
Technical field
The present invention relates to the wind-cooling heat dissipating technology of computing machine, particularly relate to a kind of detection method and pick-up unit of fan running state.
Background technology
Along with the development that computer technology is maked rapid progress, the user is also more and more higher to the requirement of computing power, some special users especially, and as recreation fan, small-sized workstation user etc., the large server user needn't say especially for performance demands again.For this reason, computing machine production firm always at type that constantly speed to introduce is faster, performance is stronger to satisfy the demand that the user is grown to even greater heights.
The lifting of performance has brought the increase of power consumption, therefore will guarantee the computing machine operate as normal, and is also just more and more higher to the requirement of heat dispersion.And the heat dissipating state of total system can directly have influence on the performance and the stability of computing machine, and according to statistics, 8% computer failure causes by heat radiation is not enough.
What present most computing machine adopted all is the radiating mode of air-cooled (being the fan heat radiation), and therefore, in order to improve heat dispersion, many manufacturers have adopted the multisystem fan to work simultaneously, increase radiating effect.Simultaneously in order to prevent that a lot of manufacturers have adopted the mode that increases redundant fan, promptly increase a back-up system fan because of fan failure causes system radiating bad and then jeopardize security of system.Spare fans is idle at ordinary times, only when system fan breaks down, just starts spare fans, temporary transient alternative system fan, and start warning, reminding user to replace fan.Like this, even the user has little time to change system fan because of some reason, the radiating effect of system can not descend yet at once.This can be described as a kind of design of comparison safety, but the thing followed also has following problem:
Spare fans is idle at ordinary times, if spare fans breaks down (during the inoperative) because of some reason, system can't learn.In this case, in case system fan goes wrong, spare fans also can't be activated, and the radiating effect of system just can descend.And if system fan can not get timely replacing, might descend because of the radiating effect of system causes the system works instability.
Some special cabinet design can't provide the installation site of spare fans, in case there is system fan to break down, unless the user changes the fault fan at once, otherwise very likely occurs causing the unsettled situation of system works because of the radiating effect decline of system.
In order to guarantee the radiating effect of system, prior art can detect fan, its general method is: the rotation speed of the fan in the direct surveying work, and judge whether fan breaks down, report to the police or make other fan full speed running on the cooling object of fault fan if judged result is a fan failure then start.Idiographic flow can reduce: detect fan speed--judges fan-----then report to the police (perhaps the starting other fan full speed runnings simultaneously) of breaking down.
Yet, in actual use, the overwhelming majority of system fan fault wears out because of the fan magnetic core or laying dust causes, this makes fan can't reach maximum (top) speed, and speed-raising is slow, aging or laying dust is to a certain degree when magnetic core, and fan rotates very slow under normal working voltage even commentaries on classics.Like this, even control chip has sent the order of full speed running to fan, fan also can't reach its maximum radiating effect.Thereby cause the system radiating inefficiency, easily because of bad other stability problems that produces that dispel the heat.And, if fan is still rotating, rotating speed output being arranged, traditional detection method can't be judged whether fault (traditional detection method is generally only just thought fan failure in the fan stall) of system fan at all.
Therefore rotation speed of the fan is just simply obtained in the detection of prior art, only can detect the fan that has broken down, can not predict the fan of failure risk, if do not have spare fans when fault takes place and wait to detect, can directly have influence on system performance, even change fan immediately, also can bring influence to ongoing work.
Summary of the invention
The object of the present invention is to provide a kind of detection method and pick-up unit of fan running state, solve prior art can not detect failure risk before fan breaks down fan, the technical matters that can not carry out early warning to fan failure.
To achieve these goals, the invention provides a kind of detection method of fan running state, wherein, comprise the steps:
Above-mentioned method, wherein, described step 1 comprises:
Step a, it is low level that system is exported Sustainable Control to the pulsed modulation of fan, makes fan reach minimum speed;
Step b, it is high level that system is exported Sustainable Control to the pulsed modulation of fan, makes fan reach maximum speed;
Step c reaches the required time of maximum speed as the minimal buffering time with fan by minimum speed, writes down the maximum speed of described minimal buffering time and fan.
Above-mentioned method, wherein, described step 2 comprises:
Steps A is judged described maximum speed whether less than default rotating speed thresholding, is execution in step C then, otherwise execution in step B;
Step B judges the described minimal buffering time whether greater than default time threshold, is execution in step C then, otherwise finishes this detection;
Step C determines that fan can not continue to keep operate as normal, and the risk that breaks down is arranged, and gives the alarm to remind the user in time to change fan.
Above-mentioned method wherein, before described step 1, also comprises and sets each time interval of detecting, and the step of setting described rotating speed thresholding and time threshold.
In order to realize purpose of the present invention, the present invention also provides a kind of pick-up unit of fan running state, wherein, comprising: parameter acquisition module, be used for: the control fan jumps to maximum speed by minimum speed, obtains the maximum speed and the required minimal buffering time of saltus step of fan; Alarm module is used for: described maximum speed and minimal buffering time are compared with rotating speed thresholding and the time threshold preset respectively, thereby determine whether fan can continue to keep operate as normal, and the fan that can not keep operate as normal is sent early warning.
Above-mentioned device, wherein, described parameter acquisition module makes fan reach described minimum speed and described maximum speed by the pulsed modulation output of control to fan.
Above-mentioned device, wherein, described parameter acquisition module is obtained the rotary speed information of fan by the pin that detects rotation speed of the fan output.
Above-mentioned device wherein, also comprises parameter setting module, is used to set the time interval of each detection, and sets described rotating speed thresholding and described time threshold.
The invention has the advantages that:
The present invention is by specific test procedure, make fan finish once by minimum speed to maximum speed saltus step (test acceleration).And the transition response speed of fan and the maximum (top) speed that can reach are judged according to the rotation speed of the fan value that reads.If the value that is obtained is lower than preset value, illustrate that fan is aging or fan page or leaf laying dust is too much, be not suitable for working on (may break down) reminds the user in time to change fan.The user can change it before system fan breaks down like this, avoided because of changing fan after the generation problem again to influence that ongoing work brought.
Description of drawings
Fig. 1 is the flow chart of steps of the inventive method;
Fig. 2 is the interface schema of computer system fan:
Fig. 3 is the synoptic diagram that a simple rotation speed of the fan provided by the invention detects control system;
Fig. 4 judges the workflow diagram of fan degree of aging according to maximum (top) speed for the present invention.
Embodiment
The fan magnetic core is aging can to make fan can't reach maximum (top) speed with laying dust, and speed-raising is slow, is to need a process and will run up to the degree that breaks down, and just can occur after acquiring a certain degree losing efficacy, make fan rotate very slow under normal working voltage even commentaries on classics, promptly fan is stuck.The present invention is directed to this phenomenon, proposed a kind of detection method of fan running state, Fig. 1 is the flow chart of steps of the inventive method, and as figure, the inventive method comprises:
The present invention carries out regular detection by above step to fan, and judges that according to some pre-set parameters the magnetic core of system fan wears out or the degree of laying dust, whether needs to change system fan etc.Surpassed admissible scope if monitor the system fan degree of aging, promptly notified the user in time to change system fan by sound or visual cues.Like this, the user just can in time take measures before fan breaks down, and prevented trouble before it happens.Traditional relatively mode of reporting to the police again that breaks down has had certain progress.
Below be that example illustrates specific implementation of the present invention just with 4pin (pin) system fan commonly used.Fig. 2 is the interface schema of system fan, and as figure, the fan interface includes four pins, and 1pin and 2pin are respectively the ground connection (GND) and the power supply input (VCC) of fan.3pin is rotation speed of the fan output, and by this signal, the rotating speed that fan is current can be known in system.4pin is rotation speed of the fan control input, and system can regulate and control rotation speed of the fan by this pin.
Fig. 3 is the synoptic diagram that a simple rotation speed of the fan detects control system, as scheming:
When the PWM of system (pulsed modulation) control was output as high level, fan reached top speed; When the PWM of system control was output as low level, fan reached the controlled minimum speed of system; When the PWM of system control is output as the certain square wave of frequency, can recently control the rotating speed of fan by the duty of regulating the output square wave.
In general, fan jumps to maximum speed by minimum speed, needs a surge time.The mechanical property of this fan magnetic core that follows the wind, good degree and page or leaf sheet laying dust thickness all have much relations.
For the mechanical property of a magnetic core in shape new fan, after the PWM of system control output becomes lasting high level from the low level that continues, the rotating speed of fan can be very fast from the slow-speed of revolution or halted state (when the part fan is output as low level when PWM control, rotation speed of the fan is zero) reach its specified maximum (top) speed Vmax, and with the work of this stabilization of speed;
And after fan was through long the use, magnetic core was aging.In the course of work, become lasting high level when the PWM of system controls output from the low level that continues, the reaction of fan is very slow, and can't reach specified maximum (top) speed Vmax.Can only reach current maximum (top) speed vmax.
Therefore, the present invention is by the minimal buffering time of measuring fan and the degree of aging that maximum (top) speed is known fan, and compares with predetermined value, just can wear out to fan and carry out early warning.
Certainly,, not only can come Comprehensive Assessment by minimal buffering time and maximum (top) speed for the judgement of fan degree of aging, also can be separately according to one of them as criterion.
Fig. 4 is the inventive method is judged the fan degree of aging according to maximum (top) speed a workflow diagram.If vmax is lower than certain value, it is very low that the radiating efficiency of system will become, and the stability of system also will be difficult to be protected.Therefore, we need only the vmax value of regular detection system fan, and compare with our predefined threshold value (relatively rotating speed Vset), can know just whether system fan can also continue operate as normal.Concrete workflow is as follows:
Certainly, the parameter among Fig. 4 is changed slightly, just can evaluate the fan degree of aging as criterion, perhaps come Comprehensive Assessment, do not repeat them here with minimal buffering time and maximum (top) speed with the minimal buffering time.
As from the foregoing, the present invention is by specific test procedure, make fan finish once by minimum speed to maximum speed saltus step (test acceleration).And the transition response speed of fan and the maximum (top) speed that can reach are judged according to the rotation speed of the fan value that reads.If the value that is obtained is lower than preset value, illustrate that fan is aging or fan page or leaf laying dust is too much, be not suitable for working on (may break down) reminds the user in time to change fan.The user can change it before system fan breaks down like this, avoided because of changing fan after the generation problem again to influence that ongoing work brought.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. the detection method of a fan running state is characterized in that, comprises the steps:
Step 1, the control fan jumps to maximum speed by minimum speed, obtains the maximum speed and the required minimal buffering time of saltus step of fan;
Step 2 compares described maximum speed and minimal buffering time respectively, thereby determines whether fan can continue to keep operate as normal, and the fan that can not keep operate as normal is sent early warning with rotating speed thresholding and the time threshold preset.
2. method according to claim 1 is characterized in that, described step 1 comprises:
Step a, it is low level that system is exported Sustainable Control to the pulsed modulation of fan, makes fan reach minimum speed;
Step b, it is high level that system is exported Sustainable Control to the pulsed modulation of fan, makes fan reach maximum speed;
Step c reaches the required time of maximum speed as the minimal buffering time with fan by minimum speed, writes down the maximum speed of described minimal buffering time and fan.
3. method according to claim 2 is characterized in that, described step 2 comprises:
Steps A is judged described maximum speed whether less than default rotating speed thresholding, is execution in step C then, otherwise execution in step B;
Step B judges the described minimal buffering time whether greater than default time threshold, is execution in step C then, otherwise finishes this detection;
Step C determines that fan can not continue to keep operate as normal, and the risk that breaks down is arranged, and gives the alarm to remind the user in time to change fan.
4. according to claim 1,2 or 3 described methods, it is characterized in that, before described step 1, also comprise and set each time interval of detecting, and the step of setting described rotating speed thresholding and time threshold.
5. the pick-up unit of a fan running state is characterized in that, comprising:
Parameter acquisition module is used for: the control fan jumps to maximum speed by minimum speed, obtains the maximum speed and the required minimal buffering time of saltus step of fan;
Alarm module is used for: described maximum speed and minimal buffering time are compared with rotating speed thresholding and the time threshold preset respectively, thereby determine whether fan can continue to keep operate as normal, and the fan that can not keep operate as normal is sent early warning.
6. device according to claim 5 is characterized in that, described parameter acquisition module makes fan reach described minimum speed and described maximum speed by the pulsed modulation output of control to fan.
7. device according to claim 6 is characterized in that, described parameter acquisition module is obtained the rotary speed information of fan by the pin that detects rotation speed of the fan output.
8. according to claim 5,6 or 7 described devices, it is characterized in that, also comprise parameter setting module, be used to set the time interval of each detection, and set described rotating speed thresholding and described time threshold.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101715647A CN100517261C (en) | 2006-12-30 | 2006-12-30 | Fan working condition detection method and detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101715647A CN100517261C (en) | 2006-12-30 | 2006-12-30 | Fan working condition detection method and detection device |
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| CN101211304A true CN101211304A (en) | 2008-07-02 |
| CN100517261C CN100517261C (en) | 2009-07-22 |
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| CNB2006101715647A Active CN100517261C (en) | 2006-12-30 | 2006-12-30 | Fan working condition detection method and detection device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486068A (en) * | 2013-09-16 | 2014-01-01 | 福建星网锐捷网络有限公司 | Smart fan and control detecting method and device for smart fan |
| CN103593028A (en) * | 2013-11-01 | 2014-02-19 | 浪潮电子信息产业股份有限公司 | Design method for regulating and controlling environment temperature of server |
| CN108279751A (en) * | 2017-01-05 | 2018-07-13 | 京威科技有限公司 | Water cooling plant |
| CN108449005A (en) * | 2018-04-10 | 2018-08-24 | 郑州云海信息技术有限公司 | A kind of fan electrical current detecting system |
| CN108457888A (en) * | 2018-03-01 | 2018-08-28 | 郑州云海信息技术有限公司 | A kind of server fan fault detection method, apparatus and system |
| CN110736300A (en) * | 2018-07-20 | 2020-01-31 | Bsh家用电器有限公司 | Domestic refrigeration device with a speed-controlled ventilation device and method for operating the same |
| WO2023123958A1 (en) * | 2021-12-31 | 2023-07-06 | 浪潮(北京)电子信息产业有限公司 | Abnormality early-warning method and apparatus for fan, and device and medium |
-
2006
- 2006-12-30 CN CNB2006101715647A patent/CN100517261C/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486068A (en) * | 2013-09-16 | 2014-01-01 | 福建星网锐捷网络有限公司 | Smart fan and control detecting method and device for smart fan |
| CN103593028A (en) * | 2013-11-01 | 2014-02-19 | 浪潮电子信息产业股份有限公司 | Design method for regulating and controlling environment temperature of server |
| CN108279751A (en) * | 2017-01-05 | 2018-07-13 | 京威科技有限公司 | Water cooling plant |
| CN108457888A (en) * | 2018-03-01 | 2018-08-28 | 郑州云海信息技术有限公司 | A kind of server fan fault detection method, apparatus and system |
| CN108449005A (en) * | 2018-04-10 | 2018-08-24 | 郑州云海信息技术有限公司 | A kind of fan electrical current detecting system |
| CN110736300A (en) * | 2018-07-20 | 2020-01-31 | Bsh家用电器有限公司 | Domestic refrigeration device with a speed-controlled ventilation device and method for operating the same |
| CN110736300B (en) * | 2018-07-20 | 2022-09-16 | Bsh家用电器有限公司 | Method for operating a domestic refrigeration device and domestic refrigeration device |
| WO2023123958A1 (en) * | 2021-12-31 | 2023-07-06 | 浪潮(北京)电子信息产业有限公司 | Abnormality early-warning method and apparatus for fan, and device and medium |
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| Publication number | Publication date |
|---|---|
| CN100517261C (en) | 2009-07-22 |
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