CN101493094B - Method and apparatus for prolonging service life of fan disk - Google Patents
Method and apparatus for prolonging service life of fan disk Download PDFInfo
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- CN101493094B CN101493094B CN2009101284230A CN200910128423A CN101493094B CN 101493094 B CN101493094 B CN 101493094B CN 2009101284230 A CN2009101284230 A CN 2009101284230A CN 200910128423 A CN200910128423 A CN 200910128423A CN 101493094 B CN101493094 B CN 101493094B
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Abstract
The invention discloses a method used for prolonging the service life of a fan disk and a device thereof, aiming at effectively prolonging the service life of the fan disk. The fan disk comprises fan groups, and each of the fan groups comprises at least two fans. The method comprises: in each of the fan groups, the parameter data of every fan is sampled, and the rotating speed attenuation grade of each fan is determined; according to the rotating speed attenuation grade of each fan, the fan with maximum rotating speed decrement is determined; except the fan with the maximum rotating speed decrement, when the rotating speed of at least one other fan is lower than the maximum rotating speed corresponding to the at least one other fan, the rotating speed of the fan with the maximum rotating speed decrement is reduced. By adopting the proposal of the invention, the service life of each fan group in the fan disk is averaged by reducing the rotating speed of the fan with the maximum rotating speed decrement, and the out-of-service time of each fan in the fan disk is ensured to be close to each other, thus effectively prolonging the service life of the fan disk.
Description
Technical field
The present invention relates to electronic technology field, relate in particular to a kind of method and device that prolongs the blades life time.
Background technique
Along with development of electronic technology, the level of integration and the performance of electronics constantly improve, thereby cause the increase of electronics power consumption, when the power consumption of electronics increases, the temperature of electronics is raise, and the rising of temperature can influence the motion speed of electronics.Therefore can adopt blades to come in the prior art, when the temperature of electronics raises, can improve the rotating speed of fan in the blades, reach the purpose that reduces the electronics temperature to the electronics cooling.
Fig. 1 is the structural representation of prior art mid frame formula electronics, wherein this electronics adopts the blades heat radiation, blades is installed in the upper and lower fan frame, and last fan frame is positioned at the top of heat-producing device, and following fan frame is positioned at the below of heat-producing device.Fig. 2 is the structural representation of blades, and this blades comprises six fans, and wherein first fan and second fan are the first fan group, and three fan and the 4th fan are the second fan group, and tendencies fan and the 6th fan are the three fan group.Each fan can be for being positioned at the heat-producing device cooling above or below it.
The life time of blades is by the life time decision of each fan of forming this blades, and the life time of each fan is by the life time decision of fan spindle bearing.Owing to the reasons such as evaporation, oxidation and loss of oiling agent, the rotating speed of fan spindle bearing is descended, when the rotating speed of fan dropped to a certain degree, the life time of fan will finish.
Presumable fan is in the state of running up always in the blades, the loss of its bearing is increased, thereby the life time of this fan in the blades is shortened, and perhaps owing to the fan preparation process, the life time of some fan in the blades can be shorter than other fans.When safeguarding the blades that life time finishes, if only change the fan that life time finishes, the life time of other fans may also will expire, thereby increased the secondary failure rate, if change all fans in the blades, cause the wasting of resources to a certain extent, and also do not proposed effectively to prolong the method for the life time of blades in the prior art.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of method and device that prolongs the blades life time, in order to the life time of effective raising blades.
A kind of method that prolongs the blades life time that the embodiment of the invention provides comprises at least one fan group in the described blades, each fan group comprises at least two fans, comprising:
In each fan group, the supplemental characteristic of each fan is sampled, determine the speed attenuation grade of each fan;
According to the speed attenuation grade of each fan, determine the fan that the speed attenuation amount is maximum;
When the rotating speed of at least one other fan except that the maximum fan of described speed attenuation amount during, reduce the rotating speed of the maximum fan of described speed attenuation amount less than the maximum (top) speed of these at least one other fan correspondences.
A kind of device that prolongs the blades life time that the embodiment of the invention provides comprises:
Class of attenuation determination module is used in each fan group the supplemental characteristic of each fan being sampled, and determines the speed attenuation grade of each fan, and the maximum fan of definite speed attenuation amount;
The rotational speed regulation module is used at the rotating speed of determining at least one other fan except that the maximum fan of described speed attenuation amount reducing the rotating speed of the maximum fan of described speed attenuation amount during less than the maximum (top) speed of these at least one other fan correspondences.
The embodiment of the invention provides a kind of method and device that prolongs the blades life time, and this method is included in each fan group, and the supplemental characteristic of each fan is sampled, and determines the speed attenuation grade of each fan; According to the speed attenuation grade of each fan, determine the fan that the speed attenuation amount is maximum; When the rotating speed of at least one other fan during less than the maximum (top) speed of these at least one other fan correspondences, reduce the rotating speed of the maximum fan of described speed attenuation amount, by reducing the rotating speed of the maximum fan of speed attenuation amount, the life time of each fan group in the average blades, make in the blades dead time of each fan approaching, thus the life time that can effectively prolong blades.
Description of drawings
Fig. 1 is the structural representation of prior art mid frame formula electronics;
Fig. 2 is the structural representation of blades in the prior art;
The implementation process of each rotation speed of the fan class of attenuation of monitoring that Fig. 3 provides for the embodiment of the invention;
The implementation process of the speed attenuation grade of definite fan that Fig. 4 provides for the embodiment of the invention;
The implementation process of the prolongation blades life time that Fig. 5 provides for the embodiment of the invention;
The apparatus structure schematic representation of the prolongation blades life time that Fig. 6 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of method that prolongs the life time of blades, this blades comprises at least one fan group, each fan group comprises at least two fans, this method comprises: in each fan group, supplemental characteristic to each fan is sampled, and determines the speed attenuation grade of each fan; According to the speed attenuation grade of each fan, determine the fan that the speed attenuation amount is maximum; When the rotating speed of at least one other fan except that the maximum fan of described speed attenuation amount during less than the maximum (top) speed of these at least one other fan correspondences, reduce the rotating speed of the maximum fan of described speed attenuation amount, thereby prolong the life time of the maximum fan of speed attenuation amount, and then prolong the life time of blades.In embodiments of the present invention,, make in the blades dead time of each fan approaching by the life time of each fan in the balance blades, thus the life time that can effectively prolong blades.
Below in conjunction with Figure of description, the embodiment of the invention is elaborated.
In embodiments of the present invention in order effectively to monitor the attenuation of each rotation speed of the fan in each fan group of blades, need the tachometer value of each fan of record under original state, tachometer value under this original state comprises: each fan is under initial installment state, be that fan is under brand-new state, desired speed value under each electric pressure, or the desired speed value under each current class, or the desired speed value under each dutycycle, and the mapping table between the preservation supplemental characteristic, for example preserve the mapping table of each dutycycle and desired speed, or in device, preserve the mapping table of each electric pressure and the desired speed value of each fan.This device can be arranged in blades, also can be used as an independent entity and exists.
Fig. 3 is the specific implementation process of each rotation speed of the fan class of attenuation of monitoring in the embodiment of the invention, and this process is the example explanation with each electric pressure of record in the device and the mapping table of desired speed, and this process specifically comprises:
S301: the supplemental characteristic to fan is sampled, and for example the magnitude of voltage of fan is sampled, and the tachometer value under this magnitude of voltage is sampled.
When allowing in embodiments of the present invention, the accuracy of the magnitude of voltage of the fan that obtains in order to guarantee to sample and the tachometer value of this magnitude of voltage correspondence can adopt repeatedly sampling to ask the form of flat accurate value to determine.
For example the magnitude of voltage of fan and the tachometer value of this magnitude of voltage correspondence are carried out 3 samplings, magnitude of voltage after the sampling is respectively V1, V2 and V3, the tachometer value of each magnitude of voltage correspondence is respectively S1, S2 and S3, the magnitude of voltage that then can determining samples obtains is the mean value of V1, V2 and V3, and the tachometer value of the mean value correspondence of this voltage is the mean value of S1, S2 and S3.
The method that adopts repeatedly sampling to average can effectively be removed the interference that exists in sampling error and the sampling, can effectively improve the reliability of this monitoring method.
S302: according to the magnitude of voltage that obtains after the sampling, reach each electric pressure of preservation and the mapping table of desired speed value, search the desired speed value of this magnitude of voltage correspondence.
S303:,, calculate the relative value of speed attenuation with the corresponding tachometer value of this magnitude of voltage that sampling obtains according to the desired speed value of searching acquisition.
S304: the relative value of the speed attenuation that calculates at least one threshold interval of decaying with setting is compared, determine the speed attenuation grade of this fan.
In embodiments of the present invention, can preserve each fan under initial installment state, be the desired speed value of fan under each current class under the brand-new state, or the desired speed value of each dutycycle, therefore, when the supplemental characteristic of fan is sampled, can be according to the data of preserving, carry out the sampling of concrete parameter, be that fan is under each dutycycle during with the corresponding relation of desired speed for example when what preserve, when fan is carried out the sampling of supplemental characteristic, gather the duty cycle parameters of fan and the rotary speed parameter of this dutycycle correspondence and get final product, believe that those skilled in the art can carry out concrete enforcement according to the description of the embodiment of the invention.
The relative value of calculating speed attenuation in the invention process comprises: according to the desired speed value of searching acquisition, the tachometer value that this magnitude of voltage that obtains with sampling is corresponding calculates, wherein concrete computational methods comprise: the difference of the tachometer value that calculating desired speed value is corresponding with this magnitude of voltage that sampling obtains, calculate the merchant of this difference and desired speed value, with the relative value of this merchant as speed attenuation.The difference of the tachometer value that this magnitude of voltage that perhaps also can be directly desired speed value and sampling be obtained is corresponding is as the relative value of speed attenuation.The tachometer value of this magnitude of voltage correspondence that perhaps also can calculating sampling obtains and the quotient of desired speed value are with the relative value of this quotient as speed attenuation.
In S304, at least one decay threshold value of the relative value of the speed attenuation that calculates and setting compared comprise: at least one threshold interval of decaying is set, wherein, each decay threshold interval is corresponding with a speed attenuation grade, according to the comparative result of at least one decay threshold interval of the relative value of speed attenuation and setting, can determine the speed attenuation grade of this fan.This decay threshold interval can be determined according to the speed attenuation situation of concrete fan, for example can determine according to great deal of experiment data, or rule of thumb data is determined etc.
For example, the difference of the tachometer value that this magnitude of voltage that obtains when calculating desired speed value and sampling is corresponding, determine the merchant of this difference and desired speed value, with this merchant during as the relative value of speed attenuation, it is 0 to 10% that the first decay threshold interval then can be set, this interval comprises left end point 0, the second decay threshold interval is 10% to 20%, this interval comprises left end point 10%, the 3rd decay threshold interval is 20% to 30%, this interval comprises left end point 20%, the 4th decay threshold interval is more than 30%, and, corresponding first class of attenuation of the first decay threshold interval, corresponding second class of attenuation of the second decay threshold interval, corresponding the 3rd class of attenuation of the 3rd decay threshold interval, corresponding the 4th class of attenuation of the 4th decay threshold interval, and the class of attenuation definite according to this method, the rotating speed of the fan of the high more correspondence of the class of attenuation is slow more as can be known, and corresponding speed attenuation amount is also many more.Fig. 4 is in embodiments of the present invention, determines the process of the speed attenuation grade of fan according to foregoing description, and this process specifically comprises:
S401: the relative value of judging speed attenuation whether in the first decay threshold interval that is provided with, when judged result when being, carry out S402, otherwise, carry out S403.
S402: the speed attenuation grade of determining this fan is first class of attenuation.
S403: the relative value of judging speed attenuation whether in the second decay threshold interval that is provided with, when judged result when being, carry out S404, otherwise, carry out S405.
S404: the speed attenuation grade of determining this fan is second class of attenuation.
S405: the relative value of judging speed attenuation whether in the 3rd decay threshold interval that is provided with, when judged result when being, carry out S406, otherwise, carry out S407.
S406: the speed attenuation grade of determining this fan is the 3rd class of attenuation.
S407: the speed attenuation grade of determining this fan is the 4th class of attenuation.
In embodiments of the present invention, after the speed attenuation of fan arrives certain class of attenuation, can adopt certain early warning measure, for example in the above-described embodiments, when speed attenuation to the four classes of attenuation of fan, can think that the life time of fan finishes, can control the alarm unit signal that gives the alarm.
Certainly determine in the process of the rotation speed of the fan class of attenuation in concrete comparison procedure, also can be not according to said sequence, the relative value of speed attenuation and first and second and three decay threshold values are compared, determine the rotation speed of the fan class of attenuation, also relative value and second, the one and three decay threshold values of speed attenuation can be compared, determine the rotation speed of the fan class of attenuation, here just do not give unnecessary details one by one, believe that those skilled in the art can adopt concrete comparative approach according to foregoing description, determine the rotation speed of the fan class of attenuation.Certainly adopt additive method to determine the relative value of rotation speed of the fan decay, and determine the method for the rotation speed of the fan class of attenuation according to this relative value, similar with said process, here just do not give unnecessary details one by one.
The size of decay threshold interval can be controlled rotation speed of the fan class of attenuation precision, for example, the length of threshold interval of decaying in the above-described embodiments is 10%, corresponding 4 classes of attenuation, when each decay threshold interval of selection is 5% length, then need corresponding 8 classes of attenuation as can be known, when the class of attenuation of correspondence more for a long time, can improve the precision of subsequent control rotation speed of the fan process.
Below by specific embodiment, illustrate and control rotation speed of the fan in the embodiment of the invention, improve the process of blades life time, as shown in Figure 5, in this process for example, two fans are arranged in the same fan group, first fan and second fan, the class of attenuation of first rotation speed of the fan is fault_flag1, and the class of attenuation of second rotation speed of the fan is fault_flag2, and thinks that the class of attenuation of rotation speed of the fan is high more, its rotating speed is slow more, promptly Dui Ying speed attenuation amount is many more, and then its life time is short more, and the process that then prolongs the blades life time comprises:
S501: obtain in the blades in the same fan group class of attenuation fault_flag1 of two rotation speeds of the fan and fault_flag2.
S502: judge whether fault_flag1 equals fault_flag2, when judged result when being, carry out S503, otherwise, carry out S504.
S503: keep the rotating speed of two fans in this same fan group constant.
S504: whether judge fault_flag1 greater than fault_flag2, when judged result when being, carry out S505, otherwise, carry out S508.
S505: whether the rotating speed of judging second fan is maximum speed, when judged result when being, carry out S506, otherwise, carry out S507.
S506: keep the rotating speed of first fan and second fan constant.
S507: the rotating speed of first fan is adjusted to minimum speed, and by regulating the rotating speed of second fan, the heat-producing device temperature that compensation brings because of first rotation speed of the fan descends raises, thereby the temperature of control heat-producing device within the limits prescribed.
S508: whether the rotating speed of judging first fan is maximum speed, when judged result when being, carry out S509, otherwise carry out S510.
S509: keep the rotating speed of first fan and second fan constant.
S510: the rotating speed of second fan is adjusted to minimum speed, and by regulating the rotating speed of first fan, the heat-producing device temperature that compensation brings because of second rotation speed of the fan descends raises, thereby the temperature of control heat-producing device within the limits prescribed.
By speed attenuation grade relatively, determine the fan that the speed attenuation amount is maximum in embodiments of the present invention, thereby can avoid the rotating speed of frequent adjustment fan.For example may be by after the fan supplemental characteristic is gathered, if the relative value difference of the rotation speed of the fan decay that obtains is according to this relative value relatively, as long as differently just carry out the adjustment of rotating speed, frequent rotating speed is adjusted that can be regular.But because in the embodiment of the invention, can determine corresponding speed attenuation grade according to this relative value, can think the attenuation relative value fan within the specific limits of rotating speed, the corresponding class of attenuation is identical, think that promptly the attenuation degree of its life time is identical, only need to determine that the different fan of the class of attenuation gets final product.Therefore,, thereby determine that the maximum fan of speed attenuation amount adjusts, can effectively reduce the number of times of adjustment, prolong the life time of adjustment component by the class of attenuation of rotating speed relatively.
In embodiments of the present invention, can regulate the rotating speed of fan, perhaps also can control the rotating speed of fan by the waveform of the certain dutycycle of input by the voltage of control fan.In the specific implementation, can select flexibly as required.Therefore, whether whether the rotating speed of judging fan when maximum speed, can be the voltage of maximum desired tachometer value correspondence by the voltage of judging fan, and perhaps whether the waveform by judging fan is that the waveform of the dutycycle of maximum desired rotating speed correspondence is realized.
In the concrete enforcement of the foregoing description, the speed drop of the fan that the speed attenuation amount is maximum can effectively prolong the life time of this fan like this for minimum speed.In specific implementation process, also the rotating speed of fan that can this speed attenuation amount is maximum reduces certain value, this certain value can be a setting value, the perhaps concrete as required value of determining, as long as can reduce the rotating speed of the maximum fan of this speed attenuation amount, can prolong the life time of this fan, thus the life time of each fan in the average blades, thus the life time that prolongs blades.
The foregoing description is that example describes so that two fans to be arranged in the fan group, when the fan that has in the fan group more than three, three fans are arranged in for example same fan group, first fan, second fan and three fan, the speed attenuation grade of first fan is fault_flag1, the speed attenuation grade of second fan is fault_flag2, the speed attenuation grade of three fan is fault_flag3, and think that the class of attenuation of rotation speed of the fan is high more, its rotating speed is slow more, its corresponding speed attenuation amount is many more, then its life time is short more, and the corresponding relation of speed attenuation grade and speed attenuation amount promptly is set, and the speed attenuation amount that some speed attenuation grade correspondences are set is maximum, the high more fan of speed attenuation grade is set in embodiments of the present invention, and its corresponding speed attenuation amount is maximum.By comparing the speed attenuation grade of three fans, determine the highest grade of speed attenuation fan, and search the elementary fan of speed attenuation, when the rotating speed of judging the elementary fan of this speed attenuation is maximum speed, then keep the rotating speed of these three fans constant, when the rotating speed of judging the elementary fan of this speed attenuation is not maximum speed, the rotating speed of then that the speed attenuation grade is the highest fan is adjusted into minimum speed, and the rotating speed of the elementary fan of speed attenuation regulated, the transmitter temperature of bringing raises because the rotating speed of the highest grade of speed attenuation fan descends in compensation, thereby the temperature of control heat-producing device within the limits prescribed.
Perhaps, when the fan that comprises in the fan group more than three, when the speed attenuation grade that has obtained first fan is fault_flag1, the speed attenuation grade of second fan is fault_flag2, when the speed attenuation grade of three fan is fault_flag3, can relatively determine the fan that the speed attenuation amount is maximum, when the rotating speed of other two fans during all less than the minimum speed of this other two fan correspondences, can reduce the rotating speed of the maximum fan of this speed attenuation amount, and in these two fans, select one arbitrarily, improve its rotating speed, the transmitter temperature of bringing raises because the rotating speed of the maximum fan of speed attenuation amount descends in compensation, thereby the temperature of control heat-producing device within the limits prescribed.Perhaps, after having determined the first maximum fan of speed attenuation amount, when the rotating speed of the second the slowest fan of speed attenuation is maximum (top) speed, and the rotating speed of three fan is less than maximum (top) speed, can reduce the rotating speed of first fan, the rotating speed of this three fan is improved, and the transmitter temperature of bringing raises thereby compensation is because the rotating speed of the maximum fan of speed attenuation amount descends.Perhaps also can, after having determined the first maximum fan of speed attenuation amount, when the rotating speed of second fan and three fan correspondence is not its corresponding maximum (top) speed, the rotating speed of first fan is reduced, temperature according to heat-producing device, adjust rotating speed of second fan and three fan or the like, just do not give unnecessary details one by one in embodiments of the present invention.
The existence of blades is the heat-producing device cooling, therefore, after according to the method described above the rotating speed of fan being regulated, when the temperature that monitors heat-producing device raises, the rotating speed of the fan behind the reduction of speed is improved once more, thereby reach the heat-producing device temperature controlling.Promptly under the situation that guarantees the normal heat radiation of heat-producing device, effectively improve the life time of blades.Believe that those skilled in the art can carry out concrete enforcement according to the introduction of the foregoing description, realize prolonging the effect of blades life time.
Adopt the embodiment of the invention can be on the monitoring basis of the rotating speed of each fan to blades, rotating speed by the control fan, reach the effect of the life time of each fan in the balance fan group, and the fan that life time finishes is reported to the police, guarantee in time to change the fan that is about to break down, avoid the generation of accident.
As shown in Figure 6, the embodiment of the invention provides a kind of device that prolongs the blades life time, and this device comprises:
Class of attenuation determination module 60 is used in each fan group the supplemental characteristic of each fan being sampled, and determines the speed attenuation grade of each fan, and the maximum fan of definite speed attenuation amount;
Rotational speed regulation module 61 is used at the rotating speed of determining at least one other fan except that the maximum fan of described speed attenuation amount reducing the rotating speed of the maximum fan of described speed attenuation amount during less than the maximum (top) speed of these at least one other fan correspondences.
Described class of attenuation determination module 60 comprises:
Relative value determining unit 600, the magnitude of voltage of each fan that is used for obtaining according to sampling, and the tachometer value of this magnitude of voltage correspondence reach the desired speed value in this voltage correspondence of preserving, and determine the speed attenuation relative value of each fan;
Class of attenuation determining unit 601 is used at least one the decay threshold interval according to described speed attenuation relative value and preservation, determines the speed attenuation grade of each fan;
Described rotational speed regulation module 61 also is used for,
The rotating speed of determining other fans keeps the rotating speed of the maximum fan of described speed attenuation amount constant during for its corresponding maximum (top) speed.
Described rotational speed regulation module 61 also is used for,
According to the temperature of heat-producing device, regulate the rotating speed of described other fans.
The embodiment of the invention provides a kind of method and device that prolongs the blades life time, and this method is included in each fan group, and the supplemental characteristic of each fan is sampled, and determines the speed attenuation grade of each fan; According to the speed attenuation grade of each fan, determine the fan that the speed attenuation amount is maximum; When the rotating speed of at least one other fan during less than the maximum (top) speed of these at least one other fan correspondences, reduce the rotating speed of the maximum fan of described speed attenuation amount, by reducing the rotating speed of the maximum fan of speed attenuation amount, the life time of each fan group in the average blades, make in the blades dead time of each fan approaching, thus the life time that can effectively prolong blades.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. a method that prolongs the blades life time comprises at least one fan group in the described blades, and each fan group comprises at least two fans, it is characterized in that, this method comprises:
In each fan group, the supplemental characteristic of each fan is sampled, determine the speed attenuation grade of each fan;
According to the speed attenuation grade of each fan, determine the fan that the speed attenuation amount is maximum;
When the rotating speed of at least one other fan except that the maximum fan of described speed attenuation amount during, reduce the rotating speed of the maximum fan of described speed attenuation amount less than the maximum (top) speed of these at least one other fan correspondences.
2. the method for claim 1 is characterized in that, described supplemental characteristic comprises:
Voltage parameter, rotary speed parameter; Or,
Current parameters, rotary speed parameter; Or,
Duty cycle parameters, rotary speed parameter.
3. method as claimed in claim 2 is characterized in that, when described supplemental characteristic was voltage parameter, rotary speed parameter, the speed attenuation grade of described definite each fan comprised:
The magnitude of voltage of each fan that obtains according to sampling, and the tachometer value of this magnitude of voltage correspondence, and the desired speed value in this voltage correspondence of preserving are determined the speed attenuation relative value of each fan;
According at least one decay threshold interval of described speed attenuation relative value and preservation, determine the speed attenuation grade of each fan.
4. the method for claim 1 is characterized in that, described method further comprises:
When the rotating speed of other fans is its corresponding maximum (top) speed, keep the rotating speed of the maximum fan of described speed attenuation amount constant.
5. the method for claim 1 is characterized in that, described method further comprises behind the rotating speed of the fan that the described speed attenuation amount of described reduction is maximum:
According to the temperature of heat-producing device, regulate the rotating speed of described other fans.
6. the method for claim 1 is characterized in that, the rotating speed of the fan that the described speed attenuation amount of described reduction is maximum comprises:
Regulate the voltage of the maximum fan of described speed attenuation amount, reduce the rotating speed of the maximum fan of described speed attenuation amount; Or,
Regulate the dutycycle of the maximum fan of described speed attenuation amount, reduce the rotating speed of the maximum fan of described speed attenuation amount.
7. a device that prolongs the blades life time is characterized in that, described device comprises:
Class of attenuation determination module is used in each fan group the supplemental characteristic of each fan being sampled, and determines the speed attenuation grade of each fan, and the maximum fan of definite speed attenuation amount;
The rotational speed regulation module is used at the rotating speed of determining at least one other fan except that the maximum fan of described speed attenuation amount reducing the rotating speed of the maximum fan of described speed attenuation amount during less than the maximum (top) speed of these at least one other fan correspondences.
8. device as claimed in claim 7 is characterized in that, described class of attenuation determination module comprises:
The relative value determining unit, the magnitude of voltage of each fan that is used for obtaining according to sampling, and the tachometer value of this magnitude of voltage correspondence reach the desired speed value in this voltage correspondence of preserving, and determine the speed attenuation relative value of each fan;
Class of attenuation determining unit is used at least one the decay threshold interval according to described speed attenuation relative value and preservation, determines the speed attenuation grade of each fan;
Selected cell is used for the speed attenuation grade according to described each fan of determining, determines the fan that the speed attenuation amount is maximum.
9. device as claimed in claim 7 is characterized in that, described rotational speed regulation module also is used for, and the rotating speed of determining other fans keeps the rotating speed of the maximum fan of described speed attenuation amount constant during for its corresponding maximum (top) speed.
10. device as claimed in claim 7 is characterized in that, described rotational speed regulation module also is used for, and according to the temperature of heat-producing device, regulates the rotating speed of described other fans.
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| CN104284567A (en) * | 2014-10-20 | 2015-01-14 | 中山市安领星电子科技有限公司 | Heat-dissipating type high-voltage pulse electronic fence host |
| CN113359963A (en) * | 2021-04-29 | 2021-09-07 | 山东英信计算机技术有限公司 | Method, device and equipment for monitoring fan aging and readable medium |
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| CN100382668C (en) * | 2004-12-15 | 2008-04-16 | 华为技术有限公司 | Fan combination and fan speed-governing method |
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| CN101493094A (en) | 2009-07-29 |
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