CN110645197B - Method and system for detecting service life of fan - Google Patents
Method and system for detecting service life of fan Download PDFInfo
- Publication number
- CN110645197B CN110645197B CN201910968204.7A CN201910968204A CN110645197B CN 110645197 B CN110645197 B CN 110645197B CN 201910968204 A CN201910968204 A CN 201910968204A CN 110645197 B CN110645197 B CN 110645197B
- Authority
- CN
- China
- Prior art keywords
- fan
- tested
- rotating speed
- testing process
- controlling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 66
- 238000012360 testing method Methods 0.000 claims abstract description 58
- 230000008569 process Effects 0.000 claims abstract description 39
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013522 software testing Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a method for detecting the service life of a fan, which comprises the following steps: controlling the fan to be tested to keep a preset target rotating speed in the testing process; in the testing process, controlling the air pressure difference between the air outlet surface and the air inlet surface of the fan to be tested to be a first target value through a pressurizing device, wherein the first target value is larger than the air pressure difference between the air outlet surface and the air inlet surface when the fan to be tested is kept to be at a target rotating speed under a conventional working condition; and when the continuous operation time of the fan to be tested is detected to be lower than the preset time threshold, ending the test process aiming at the fan to be tested and determining the fan to be tested to be an unqualified fan. By the aid of the scheme, time consumed by life test of the fan to be tested can be shortened. The application also provides a detection system for the service life of the fan, and the detection system has corresponding technical effects.
Description
Technical Field
The invention relates to the technical field of fan detection, in particular to a method and a system for detecting the service life of a fan.
Background
Fans are widely used in home computers, servers and various industrial control products as a part of active heat dissipation technology. The fan is as the integration body of structure, electron spare, especially in products such as server, needs to detect the life of fan to guarantee the heat dispersion of server.
In the conventional scheme, the detection of the service life of the fan is very time-consuming, for example, for a general model of axial flow fan, the service life test of the fan usually takes approximately 70000h, and the fan needs to occupy the test equipment for a long time. Later methods of accelerated life testing of L10 appeared. The L10 accelerated life test method refers to that the environmental temperature of fans is increased, for example, to 70 ℃ within the environmental temperature in which the fans can normally work, at this time, batches of fans to be tested are placed in the environment side by side, and the continuous operation time is converted into the life of the fans at 40 ℃, so as to determine whether the fans can meet the requirement of 70000h operation at 40 ℃. However, even if the temperature is raised to 70 ℃, the required operation time is still as long as 20000h or more, which is basically equivalent to 2 years, so that the acceleration effect of such a manner is limited and still less effective.
In summary, how to further reduce the time consumption of the fan life test is a technical problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a method and a system for detecting the service life of a fan, so as to reduce the time consumption of the fan service life test.
In order to solve the technical problems, the invention provides the following technical scheme:
a method for detecting the service life of a fan comprises the following steps:
controlling the fan to be tested to keep a preset target rotating speed in the testing process;
in the testing process, controlling the air pressure difference between the air outlet surface and the air inlet surface of the fan to be tested to be a first target value through a pressurizing device, wherein the first target value is larger than the air pressure difference between the air outlet surface and the air inlet surface when the fan to be tested is kept at the target rotating speed under the conventional working condition;
and when detecting that the continuous operation time of the fan to be tested is lower than a preset time threshold, ending the test process aiming at the fan to be tested and determining that the fan to be tested is an unqualified fan.
Preferably, the controlling the fan to be tested to maintain the preset target rotating speed in the testing process includes:
and controlling the fan to be tested to keep a preset target rotating speed in the testing process in a closed-loop feedback mode.
Preferably, the pressurizing device is a flat plate which is fixed relative to the fan to be tested and parallel to the air outlet surface of the fan to be tested.
Preferably, the distance between the flat plate and the air outlet surface of the fan to be tested is a distance selected from a first range [ a/5, a/3], and a is the diameter of the fan to be tested.
Preferably, the pressurizing device is fixed with the shell of the fan to be tested through a screw structure.
Preferably, the method further comprises the following steps:
and in the testing process, controlling the ambient temperature of the fan to be tested to be a preset first temperature value higher than the normal temperature.
Preferably, after determining that the fan to be tested is an unqualified fan, the method further includes:
and recording the continuous operation duration, the serial number and the model of the fan to be tested.
A fan life detection system comprising:
the rotating speed control device is used for controlling the fan to be tested to keep a preset target rotating speed in the testing process;
the pressurizing device is used for controlling the air pressure difference between the air outlet surface and the air inlet surface of the fan to be tested to be a first target value in the testing process, and the first target value is larger than the air pressure difference between the air outlet surface and the air inlet surface when the fan to be tested is kept at the target rotating speed under the conventional working condition;
and the duration counting device is used for finishing the testing process aiming at the fan to be tested and determining that the fan to be tested is an unqualified fan when the duration of the continuous operation of the fan to be tested is detected to be lower than a preset duration threshold.
Preferably, the rotation speed control device is specifically configured to:
and controlling the fan to be tested to keep a preset target rotating speed in the testing process in a closed-loop feedback mode.
Preferably, the pressurizing device is a flat plate which is fixed relative to the fan to be tested and parallel to the air outlet surface of the fan to be tested.
The applicant considers that when the fan to be tested is kept at a fixed rotating speed, the larger the pressure difference between the air outlet surface and the air inlet surface is, the smaller the air volume is, the larger the resistance borne by the fan to be tested is, the current in the fan to be tested can be increased at the moment, the reliability of circuits and components in the fan to be tested is reduced, the continuous operation time of the fan to be tested is also reduced, and the service life of the fan to be tested is shortened. Therefore, in the scheme of the application, the fan to be tested is controlled to be kept at the preset target rotating speed in the testing process, the air pressure difference between the air outlet surface and the air inlet surface of the fan to be tested is controlled to be the first target value through the pressurizing device, the first target value is larger than the air pressure difference between the air outlet surface and the air inlet surface when the fan to be tested is kept at the target rotating speed under the conventional working condition, and therefore the time consumed by the life test of the fan to be tested is shortened.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a fan operating curve and a resistance curve at a set rotational speed under two operating conditions;
FIG. 2 is a flowchart illustrating a method for detecting a lifetime of a fan according to the present invention.
Detailed Description
The core of the invention is to provide a method for detecting the service life of the fan, which shortens the time consumption of the service life test of the fan to be tested.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The applicant considers that a resistance curve of the fan at a fixed rotating speed is a curve with a slope smaller than 0, namely when the fan is kept at the fixed rotating speed, the larger the pressure difference between the air outlet surface and the air inlet surface is, the smaller the air volume is, and correspondingly, the smaller the pressure difference between the air outlet surface and the air inlet surface is, the smaller the resistance encountered by the fan is, the larger the air volume is.
Fig. 1 shows the resistance curve of an axial fan of a specific type at a set speed. Of course, the resistance curve moves as the set rotational speed changes, and translates generally in the negative Y-axis direction as the set rotational speed is lower. The Y-axis of fig. 1 represents the pressure difference, otherwise known as the wind pressure difference, between the outlet and inlet air surfaces of the fan in inches of water in.h2o, and the X-axis represents the air flow rate of the fan, expressed in CFM (cubic feet per minute).
Point a (Q1, P1) in fig. 1 is an operating point at which the fan is kept at a set rotation speed under a first operating condition, where the first operating condition refers to an operating condition used in an L10 accelerated life test scheme, and it can be seen that, under this operating condition, a pressure difference between an air outlet surface and an air inlet surface of the fan is small, and an air volume is large, which indicates that a current of the fan is small at this time, power consumption is low, and reliability of internal circuits and components is also high, thus resulting in long time consumption for required tests. While point B (Q2, P2) in fig. 1 is the operating point at which the fan is maintained at the same set rotational speed in the second operating condition, it can be seen that if the operating point of the fan is moved from a to B, i.e. the pressure difference between the air outlet surface and the air inlet surface of the fan is increased, the resistance applied to the fan is increased, and the air volume is decreased. The current inside the fan can be increased under the worse working condition, and the reliability of circuits and components inside the fan is reduced, so that the time-consuming effect of the life test can be achieved.
Referring to fig. 2, fig. 2 is a flowchart illustrating an implementation of a method for detecting a lifetime of a fan according to the present invention, where the method for detecting a lifetime of a fan includes the following steps:
step S101: and controlling the fan to be tested to keep a preset target rotating speed in the testing process.
The specific numerical value of the target rotating speed can be set and adjusted according to actual conditions, and it can be known from the foregoing that when other conditions are the same, the larger the target rotating speed is set, the larger the wind pressure difference between the air outlet surface and the air inlet surface of the fan to be tested is, the larger the current inside the fan is, and the shorter the test time is, so that the fan to be tested can normally run at full speed, that is, the target rotating speed can be generally set as the maximum rotating speed of the fan to be tested.
When the fan to be tested is controlled to maintain the preset target rotating speed in the testing process, the control is usually implemented by a rotating speed control device based on closed-loop feedback, that is, step S101 is generally specifically: and controlling the fan to be tested to keep a preset target rotating speed in the testing process in a closed-loop feedback mode.
For example, a relevant sensor is arranged in the server to acquire the rotating speed of the motor, and the rotating speed of the motor is automatically controlled in a PID (proportion integration differentiation) regulation mode, so that the fan to be measured is kept at the preset target rotating speed. The control mode of closed-loop feedback is also a widely-used mode, and is convenient for implementation of the scheme.
Step S102: in the testing process, the air pressure difference between the air outlet surface and the air inlet surface of the fan to be tested is controlled to be a first target value through the pressurizing device, and the first target value is larger than the air pressure difference between the air outlet surface and the air inlet surface when the fan to be tested is kept to be at the target rotating speed under the conventional working condition.
The specific form of the pressurizing device can be set and adjusted according to actual needs, as long as the air pressure difference between the air outlet surface and the air inlet surface of the fan to be tested reaches the first target value after the fan to be tested is kept at the preset target rotating speed. The first target value is a preset pressure value, specific numerical values can be set and adjusted according to actual needs, but the set first target value needs to be larger than the air pressure difference between the air outlet surface and the air inlet surface when the fan to be tested is kept at the target rotating speed under the conventional working condition, and the purpose of acceleration test of the application can be achieved.
Considering the convenience of implementation of the scheme, the pressurizing device can be selected as a flat plate which is fixed in relative position with the fan to be tested and is parallel to the air outlet surface of the fan to be tested. The material and the size of the flat plate can be set and adjusted according to the requirement.
In this kind of embodiment, because set up a flat board at the air-out face of fan that awaits measuring, can increase the air-out degree of difficulty of fan, improve the wind pressure differential of the air-out face and the air inlet face of fan that awaits measuring. And it can be understood that the closer the distance between the flat plate and the air outlet surface of the fan to be tested is, the greater the air pressure difference between the air outlet surface and the air inlet surface of the fan to be tested is under the condition of keeping the same target rotating speed. That is, if the first target value is set to be large, the distance between the flat plate and the fan to be tested can be reduced, and correspondingly, when the first target value is set to be small, the distance between the flat plate and the fan to be tested can be increased. In practical application, the wind pressure difference between the air outlet surface and the air inlet surface of the fan to be detected can be detected through wind tunnel equipment and the like.
In addition, in practical applications, it is considered that when the distance between the flat plate and the fan to be tested is short, the testing effect is improved, that is, the time consumed for testing is shorter as the first target value is set to be larger, but when the first target value is set to be too large, unexpected faults may occur in a short time to the fan to be tested, that is, the life test of the fan to be tested cannot be realized, and therefore, the first target value should not be set to be too large.
In one embodiment, after experimental verification, the distance between the flat plate and the air outlet surface of the fan to be tested is a distance selected from the first range [ a/5, a/3], where a is the diameter of the fan to be tested. When a numerical value is selected in the first range to serve as the distance between the flat plate and the air outlet surface of the fan to be tested, the air pressure difference between the air outlet surface and the air inlet surface of the fan to be tested is appropriate, the air pressure difference is higher by about 2-8 times than that under the conventional working condition, and the service life detection time can be shortened by more than 50%. In other words, the first target value may be set to be generally about 2 to 8 times the conventional wind pressure difference.
Because the relative position of the pressurizing device and the fan to be tested needs to be fixed, in practical application, the cost of the screw structure is low, and the distance between the pressurizing device and the fan to be tested can be conveniently adjusted, so that the pressurizing device can be fixed with the shell of the fan to be tested through the screw structure. For example, the pressurizing device is a flat plate, the fan to be tested is of a square structure, and the square shell can be fixed on the flat plate through a screw structure, so that the air outlet surface of the fan to be tested is opposite to the flat plate, and the distance between the air outlet surface and the flat plate is a range from a/5 to a/3.
Step S103: and when the continuous operation time of the fan to be tested is detected to be lower than the preset time threshold, ending the test process aiming at the fan to be tested and determining the fan to be tested to be an unqualified fan.
The duration threshold needs to be predetermined. It should be noted that, because the fans have different models, different ambient temperatures, and different wind pressure differences between the two end surfaces, the service lives of the fans are different, and therefore, when the duration threshold is determined, a more complex theoretical analysis mode can be adopted in combination with a simpler experimental verification mode. For example, a plurality of fans with the same type as the fan to be tested are selected in advance, for example, 20 fans are selected, then the target rotating speed is maintained, the air pressure difference between the air outlet surface and the air inlet surface of each fan is controlled to be a first target value through a pressurizing device, the service life of each fan is counted, and the minimum value is set as a duration threshold. Of course, considering that there may be a defective fan in the 20 fans, one or more data with significantly too low values may be excluded, and then the minimum value may be selected from the remaining data as the duration threshold, and further considering the error factor, the selected minimum value may be reduced by a certain margin and then be used as the preset duration threshold. In addition, the duration threshold may be continuously adjusted based on theoretical analysis and subsequent testing.
By applying the technical scheme provided by the embodiment of the invention, when the fan to be tested is kept at a fixed rotating speed, the larger the pressure difference between the air outlet surface and the air inlet surface is, the smaller the air volume is, the larger the resistance force applied to the fan to be tested is, the current in the fan to be tested is increased, the reliability of circuits and components in the fan to be tested is reduced, the continuous operation time of the fan to be tested is also reduced, and the service life is shortened. Therefore, in the application, the fan to be tested is controlled to be kept at the preset target rotating speed in the testing process, the air pressure difference between the air outlet surface and the air inlet surface of the fan to be tested is controlled to be the first target value through the pressurizing device, and the first target value is larger than the air pressure difference between the air outlet surface and the air inlet surface when the fan to be tested is kept at the target rotating speed under the conventional working condition, so that the time consumed by the life test of the fan to be tested is shortened.
Further, in a specific embodiment, after step S103, the method may further include:
the continuous operation duration, the serial number and the model of the fan to be tested are recorded, so that the historical data can be analyzed and counted subsequently, and particularly in the batch test occasion, the data recording is favorable for analyzing the reject ratio of batch products.
In an embodiment of the present invention, the method may further include:
in the testing process, the environment temperature of the fan to be tested is controlled to be a preset first temperature value higher than the normal temperature.
In this kind of implementation, it also can influence the consuming time of life-span test to consider the temperature, consequently sets up ambient temperature to the first temperature value that is higher than the normal atmospheric temperature of presetting for the fan that awaits measuring accomplishes the test under high temperature, high pressure, is favorable to reducing the test consuming time, improves efficiency of software testing.
Corresponding to the above method embodiments, the embodiments of the present invention further provide a system for detecting a lifetime of a fan, which can be referred to in correspondence with the above.
The fan life detection system may include:
the rotating speed control device is used for controlling the fan to be tested to keep a preset target rotating speed in the testing process;
the pressurizing device is used for controlling the air pressure difference between the air outlet surface and the air inlet surface of the fan to be tested to be a first target value in the testing process, and the first target value is larger than the air pressure difference between the air outlet surface and the air inlet surface when the fan to be tested is kept to be at the target rotating speed under the conventional working condition;
and the duration counting device is used for ending the testing process aiming at the fan to be tested and determining the fan to be tested as an unqualified fan when the duration of the continuous operation of the fan to be tested is detected to be lower than the preset duration threshold.
In one embodiment of the present invention, the rotational speed control device is specifically configured to:
and controlling the fan to be tested to keep a preset target rotating speed in the testing process in a closed-loop feedback mode.
In an embodiment of the invention, the pressure device is a flat plate fixed in position relative to the fan to be tested and parallel to the air outlet surface of the fan to be tested.
In an embodiment of the invention, the distance between the flat plate and the air outlet surface of the fan to be measured is selected from a first range [ a/5, a/3], and a is the diameter of the fan to be measured.
In an embodiment of the present invention, the pressurizing device is fixed to the casing of the fan to be tested by a screw structure.
In an embodiment of the present invention, the method may further include:
and the heating device is used for controlling the ambient temperature of the fan to be tested to be a preset first temperature value higher than the normal temperature in the testing process.
In an embodiment of the present invention, the method may further include:
and the recording device is used for recording the continuous operation time length, the serial number and the model of the fan to be tested.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The principle and the implementation of the present invention are explained in the present application by using specific examples, and the above description of the embodiments is only used to help understanding the technical solution and the core idea of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. A method for detecting the service life of a fan is characterized by comprising the following steps:
controlling the fan to be tested to keep a preset target rotating speed in the testing process;
in the testing process, controlling the air pressure difference between the air outlet surface and the air inlet surface of the fan to be tested to be a first target value through a pressurizing device, wherein the first target value is larger than the air pressure difference between the air outlet surface and the air inlet surface when the fan to be tested is kept at the target rotating speed under the conventional working condition;
when detecting that the continuous operation time length of the fan to be tested is lower than a preset time length threshold value, ending the test process aiming at the fan to be tested and determining that the fan to be tested is an unqualified fan;
the pressurizing device is a flat plate which is fixed relative to the fan to be tested and is parallel to the air outlet surface of the fan to be tested.
2. The method for detecting the service life of the fan as claimed in claim 1, wherein the controlling the fan to be tested to maintain a preset target rotation speed during the test process comprises:
and controlling the fan to be tested to keep a preset target rotating speed in the testing process in a closed-loop feedback mode.
3. The method as claimed in claim 1, wherein the distance between the flat plate and the outlet of the fan to be tested is selected from a first range [ a/5, a/3], where a is the diameter of the fan to be tested.
4. The method as claimed in claim 1, wherein the pressure device is fixed to the casing of the fan to be tested by a screw structure.
5. The method for detecting the life of a fan according to any one of claims 1 to 4, further comprising:
and in the testing process, controlling the ambient temperature of the fan to be tested to be a preset first temperature value higher than the normal temperature.
6. The method for detecting the life of a fan according to claim 1, further comprising, after determining that the fan to be tested is an unqualified fan:
and recording the continuous operation duration, the serial number and the model of the fan to be tested.
7. A fan life detection system, comprising:
the rotating speed control device is used for controlling the fan to be tested to keep a preset target rotating speed in the testing process;
the pressurizing device is used for controlling the air pressure difference between the air outlet surface and the air inlet surface of the fan to be tested to be a first target value in the testing process, and the first target value is larger than the air pressure difference between the air outlet surface and the air inlet surface when the fan to be tested is kept at the target rotating speed under the conventional working condition;
the duration counting device is used for ending the testing process aiming at the fan to be tested and determining the fan to be tested as a disqualified fan when the duration of the continuous operation of the fan to be tested is detected to be lower than a preset duration threshold;
the pressurizing device is a flat plate which is fixed relative to the fan to be tested and is parallel to the air outlet surface of the fan to be tested.
8. The fan life detection system of claim 7, wherein the rotational speed control device is specifically configured to:
and controlling the fan to be tested to keep a preset target rotating speed in the testing process in a closed-loop feedback mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910968204.7A CN110645197B (en) | 2019-10-12 | 2019-10-12 | Method and system for detecting service life of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910968204.7A CN110645197B (en) | 2019-10-12 | 2019-10-12 | Method and system for detecting service life of fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110645197A CN110645197A (en) | 2020-01-03 |
| CN110645197B true CN110645197B (en) | 2021-02-02 |
Family
ID=69012652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910968204.7A Active CN110645197B (en) | 2019-10-12 | 2019-10-12 | Method and system for detecting service life of fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110645197B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02230991A (en) * | 1989-03-01 | 1990-09-13 | Fujitsu Ltd | Fan life test device |
| JP2013190240A (en) * | 2012-03-12 | 2013-09-26 | Fuji Electric Co Ltd | Acceleration life test system for cooling fan |
| CN103470521A (en) * | 2013-09-26 | 2013-12-25 | 海南金盘电气有限公司 | Fan life prediction device |
| CN105715530A (en) * | 2014-12-04 | 2016-06-29 | 国家电网公司 | Accelerated life test platform for water pump of converter valve cooling system and test method of accelerated life test platform |
| CN107044948A (en) * | 2016-10-31 | 2017-08-15 | 惠州市德赛西威汽车电子股份有限公司 | A kind of vehicle-mounted clarifier filter screen life detecting method |
| CN109578313A (en) * | 2018-12-21 | 2019-04-05 | 南京埃斯顿自动化股份有限公司 | A kind of real-time online prediction technique of fan life |
-
2019
- 2019-10-12 CN CN201910968204.7A patent/CN110645197B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02230991A (en) * | 1989-03-01 | 1990-09-13 | Fujitsu Ltd | Fan life test device |
| JP2013190240A (en) * | 2012-03-12 | 2013-09-26 | Fuji Electric Co Ltd | Acceleration life test system for cooling fan |
| CN103470521A (en) * | 2013-09-26 | 2013-12-25 | 海南金盘电气有限公司 | Fan life prediction device |
| CN105715530A (en) * | 2014-12-04 | 2016-06-29 | 国家电网公司 | Accelerated life test platform for water pump of converter valve cooling system and test method of accelerated life test platform |
| CN107044948A (en) * | 2016-10-31 | 2017-08-15 | 惠州市德赛西威汽车电子股份有限公司 | A kind of vehicle-mounted clarifier filter screen life detecting method |
| CN109578313A (en) * | 2018-12-21 | 2019-04-05 | 南京埃斯顿自动化股份有限公司 | A kind of real-time online prediction technique of fan life |
Non-Patent Citations (1)
| Title |
|---|
| "航空液压泵加速寿命试验台的研制";桑勇 等;《液压气动与密封》;20090131(第1期);第45-48页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110645197A (en) | 2020-01-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10317862B2 (en) | Systems and methods for heat rise compensation | |
| CN104572399B (en) | A kind of temprature control method and electronic equipment | |
| US20220365124A1 (en) | Environment forming apparatus, program, and method for controlling blower fan | |
| CN111734670B (en) | Test system and test method of magnetic suspension blower | |
| JP6051829B2 (en) | Fan control device | |
| CN111536067B (en) | Fan rotating speed control method and device, electronic equipment and storage medium | |
| US20100296945A1 (en) | Fan control apparatus and fan control method | |
| US9765789B2 (en) | Pump testing for predicting lifetime and wear conditions | |
| US20110046812A1 (en) | Device and method for cooling fan control using measured amperage load | |
| CN104763665A (en) | Fan fault detection method and device of network device | |
| US10817039B2 (en) | Adjusting a power limit in response to a temperature difference | |
| CN104252209A (en) | Method and system for automatically regulating rotation speed of fan | |
| CN108268082B (en) | Power control method and device | |
| CN107145431A (en) | The method and server of server B MC systems air channel abnormal monitoring alarm | |
| CN110645197B (en) | Method and system for detecting service life of fan | |
| CN108252932B (en) | Method for operating at least one pump unit of a plurality of pump units | |
| CN112065759B (en) | Accurate speed regulation method with case blockage monitoring function and case | |
| CN104951025A (en) | Fan speed control system and method and server for controlling fan speed | |
| CN104714867A (en) | Reverse fan arrangement testing system and method | |
| CN110824109A (en) | Evaluation test method and test stand for dust holding performance of high-efficiency air filter material | |
| CN109827301B (en) | Speed regulation method of air conditioner fan, storage medium and air conditioning system | |
| CN101472438B (en) | Method for determining electronic system radiating requirement | |
| CN112461729A (en) | Ultra-clean room environment monitoring method and device, electronic equipment and storage medium | |
| JP2013183077A (en) | Ict device | |
| CN113375832B (en) | Temperature monitoring system, method and device, motor equipment and computer storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |