CN113465730A - Fan noise test system and test method - Google Patents
Fan noise test system and test method Download PDFInfo
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- CN113465730A CN113465730A CN202110882082.7A CN202110882082A CN113465730A CN 113465730 A CN113465730 A CN 113465730A CN 202110882082 A CN202110882082 A CN 202110882082A CN 113465730 A CN113465730 A CN 113465730A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
Abstract
The invention discloses a fan noise test system and a test method, comprising the following steps: quick-witted case, sealed cabin, test platform and a plurality of radio mechanism give sound insulation, radio mechanism evenly distributed is in the test platform side, and test platform includes: the fixture comprises a fixed platform, a turnover mechanism arranged on the fixed platform, a turnover platform connected with the output end of the turnover mechanism, a rotating mechanism arranged on the turnover platform, and a fixture platform connected with the output end of the rotating mechanism, wherein the turnover mechanism drives the turnover platform to turn over, and the rotating mechanism drives the fixture platform to rotate. The invention respectively realizes the noise detection of each angle of the fan in different axial directions through the turnover mechanism and the rotating mechanism, and realizes the rotation speed detection of the fan at the same time of the noise detection, thereby improving the detection efficiency of the fan.
Description
Technical Field
The invention relates to the technical field of audio and electronic measurement, in particular to a fan noise test system and a test method.
Background
In recent years, the problem of noise of the heat dissipation fan has been gradually revealed with the rapid spread of home computers and the use of a large number of high power consumption chips. The fan noise sources mainly include the rotation noise, vortex noise and resonance noise generated by the blades when the blades rotate, and the unbalanced vibration of the fan body caused by the unequal weight of the blades. The three noise levels generated by the rotation of the fan blades mainly depend on the original design of the fan, but the unbalanced vibration of the fan body is caused by the precision and defects of the mold in the production process. When the unbalanced vibration of the fan body is transmitted to the chassis or the radiating fins, the chassis or the radiating fins can generate steady-state vibration, and larger vibration noise is generated. Therefore, before the fan is shipped, it is necessary to detect the unbalanced vibration of the fan.
The current fan rotating speed or noise testing system mainly comprises the following two types:
1) and setting a rotating speed adjusting threshold value, and enabling the fan to work at a rotating speed corresponding to the requirement through self-adaptation of the threshold value range. The mode can ensure that the product can meet the requirement of rotating speed, and has the defect that whether the fan has noise abnormity cannot be detected.
2) The fixed Duty value was set manually and an artificial 5-degree tone was performed with the fan turned. The mode is most stable, can ensure the correlation of response states of products and users, and has the defects of no test record, no traceability and no guarantee of 100 percent coverage test.
The traditional fan testing method and system are used for solving the problem that the existing fan testing is completely operated manually, so that time and labor are consumed, and the analysis testing result cannot be consulted. The method has the defects that no record tracing exists, the manual standards are different, and the system with high production real-time and stability requirements cannot be met.
Accordingly, the prior art is deficient and needs improvement.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a fan noise test system and a test method.
The technical scheme of the invention is as follows: provided is a fan noise test system including: case, set up in sealed syllable-dividing cabin of quick-witted incasement, set up in sealed syllable-dividing cabin inside test platform and set up in a plurality of radio mechanism of test platform side, radio mechanism evenly distributed is in the test platform side, test platform includes: the fixture comprises a fixed platform, a turnover mechanism arranged on the fixed platform, a turnover platform connected with the output end of the turnover mechanism, a rotating mechanism arranged on the turnover platform, and a fixture platform connected with the output end of the rotating mechanism, wherein the turnover mechanism drives the turnover platform to turn over, and the rotating mechanism drives the fixture platform to rotate.
Further, the turnover mechanism includes: driving motor, with drive mechanism that driving motor's output is connected and set up in the upset support of fixed platform both sides, the upset platform sets up between the both sides upset support, drive mechanism is connected with the upset platform, driving motor side is provided with noise cancelling mechanism.
Further, be provided with a plurality of clamping mechanism on the anchor clamps platform, clamping mechanism includes: the clamping device comprises a clamping seat arranged on the clamp platform, a clamping cylinder arranged below the clamping seat and a clamping block connected with the output end of the clamping cylinder, wherein the clamping block is hinged on the clamping seat, one end of the clamping block is connected with the clamping cylinder, and the other end of the clamping block is provided with a soft rubber block.
Further, the radio mechanism includes a first radio mechanism and a second radio mechanism, and the first radio mechanism includes: set up in last revolving cylinder of anchor clamps platform and set up in swinging boom on revolving cylinder's the output, second radio mechanism including set up in the radio reception support of upset platform bottom, all be provided with the microphone on swinging boom and the radio reception support.
Furthermore, a plurality of positioning cylinders are arranged beside the overturning platform and the clamp platform.
Furthermore, a soundproof door is arranged on the case corresponding to the sealed soundproof cabin, and the soundproof door covers the sealed soundproof cabin.
The invention also provides a fan noise testing method, which comprises the following steps:
step 1: placing a fan to be detected on a clamp platform, connecting a wiring terminal of the fan with an interface on the clamp platform, and clamping the fan;
step 2: setting working parameters of the fan to enable the fan to be started to enter a working state;
and step 3: setting a fixed percentage value to facilitate monitoring the working state of the fan;
and 4, step 4: the turnover mechanism drives the turnover platform to rotate to different set angles, and respectively carries out radio collection at two fixed rotating speeds at each corresponding angle, and analyzes and judges radio results;
and 5: the rotating mechanism drives the clamp platform to rotate to different set angles, and the step 4 is repeated at different angles to perform radio collection and analysis and judgment of radio results;
step 6: and storing the test data, and taking out the fan for receiving the test to finish the test.
Further, the specific steps of step 4 are:
step 4.1: the overturning platform is located at a first detection position, and is located at a 0-degree position at the moment;
step 4.2: controlling the fan to work at a first set rotating speed, carrying out radio collection work by the radio mechanism, and analyzing a radio result through the system;
step 4.3: controlling the fan to work at a second set rotating speed, carrying out radio collection work by the radio mechanism, and analyzing a radio result through the system;
step 4.4: the turnover mechanism drives the turnover platform to turn over, so that the turnover platform is located at a second detection position, and the turnover platform is located at a 90-degree position at the moment;
step 4.5: controlling the fan to work at a first set rotating speed, carrying out radio collection work by the radio mechanism, and analyzing a radio result through the system;
step 4.6: controlling the fan to work at a second set rotating speed, carrying out radio collection work by the radio mechanism, and analyzing a radio result through the system;
step 4.7: the turnover mechanism drives the turnover platform to turn over, so that the turnover platform is located at a third detection position, and the turnover platform is located at a 180-degree position at the moment;
step 4.8: controlling the fan to work at a first set rotating speed, carrying out radio collection work by the radio mechanism, and analyzing a radio result through the system;
step 4.9: controlling the fan to work at a second set rotating speed, carrying out radio collection work by the radio mechanism, and analyzing a radio result through the system;
step 4.10: the turnover mechanism drives the turnover platform to turn over, so that the turnover platform moves to an initial position, and the turnover platform is located at 0 degree.
Further, in the step 5, the rotating mechanism drives the clamp platform to rotate by a set angle of 0-180 °.
Further, if the detected rotating speed and noise do not meet the test requirements, executing step 6, ending the test, and re-executing step 1 and placing the fan to be detected.
By adopting the scheme, the invention respectively realizes the noise detection of each angle of the fan in different axial directions through the turnover mechanism and the rotating mechanism, and realizes the rotation speed detection of the fan at the same time of the noise detection, so that the detection efficiency of the fan is improved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Fig. 3 is a rear side structure diagram of the present invention.
Fig. 4 is a partially enlarged view of a portion B in fig. 3.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
Referring to fig. 1 and fig. 2, the present invention provides a fan noise testing system, including: the sound insulation test cabinet comprises a case 1, a sealed sound insulation cabin 2 arranged in the case 1, a test platform 3 arranged inside the sealed sound insulation cabin 2, and a plurality of radio mechanisms 4 arranged beside the test platform 3. The radio mechanisms 4 are uniformly distributed at the side of the test platform 3. The test platform 3 comprises: the device comprises a fixed platform 31, a turnover mechanism 32 arranged on the fixed platform 31, a turnover platform 33 connected with the output end of the turnover mechanism 32, a rotating mechanism 34 arranged on the turnover platform 33, and a clamp platform 35 connected with the output end of the rotating mechanism 34. The turnover mechanism 32 drives the turnover platform 33 to turn over, and the rotating mechanism 34 drives the clamp platform 35 to rotate.
During operation, the fan to be detected is placed on the clamp platform 35, the wiring terminal of the fan is connected with the interface on the clamp platform 35, and the fan is clamped. And then setting the working parameters and the fixed percentage value of the fan, and starting the fan to rotate. The turnover platform 33 is driven by the turnover mechanism 32 to rotate around the X axis to different angle positions, and the noise condition of the fan is collected by the radio mechanism 4. After the sound collection at different angles is completed, the turnover mechanism 32 drives the turnover platform 33 to rotate to the initial position. The rotation mechanism 34 is activated to drive the gripper 35 platform to rotate about the Z axis to different angular positions. Then, the turnover mechanism 32 drives the turnover platform 33 to rotate around the X-axis to different angular positions, and the noise conditions at different angles are respectively collected through the radio mechanism 4. And after the noise collection is completed, the sound receiving result is analyzed and judged through the system for the detection personnel to look up. And then storing the test data, and taking out the tested fan to finish the radio reception detection at different angles with fixed Duty values.
When the turnover platform 33 is driven by the turnover mechanism 32 to move to different detection angles, the fan works at different rotating speeds according to set working parameter values, the sound condition of the fan is collected through the radio mechanism 4, and data analysis is performed by the system, so that whether the fan meets the rotating speed requirement is detected.
The turnover mechanism 32 includes: the device comprises a driving motor 321, a transmission mechanism 322 connected with the output end of the driving motor 321, and turning supports 323 arranged on two sides of the fixed platform. The overturning platform 33 is arranged between the overturning brackets 323 at the two sides, and the transmission mechanism 322 is connected with the overturning platform 33. A silencing mechanism 324 is arranged beside the driving motor 321. When the driving motor 321 is started, the power is transmitted to the turnover platform 33 through the transmission mechanism 322, so that the turnover platform 33 is turned over, and noise detection at different angles is realized. Meanwhile, the silencing mechanism 324 is arranged beside the driving motor 321 to absorb noise generated when the driving motor 321 works, so that influence on a noise detection result of the fan is avoided.
A plurality of clamping mechanisms 351 are arranged on the clamp platform 35, and each clamping mechanism 351 comprises: the clamping device comprises a clamping seat arranged on the clamp platform 35, a clamping cylinder arranged below the clamping seat, and a clamping block connected with the output end of the clamping cylinder. The clamping block is hinged to the clamping seat, and one end of the clamping block is connected with the clamping cylinder. And the other end of the clamping block is provided with a soft rubber block. When the clamping cylinder starts, the output end of the clamping cylinder is pushed upwards, the clamping block is pushed to rotate around the hinge position, so that the soft rubber block is pressed on the fan, and the fan is clamped and fixed on the clamp platform 35.
Referring to fig. 3 and 4, the sound receiving mechanism 4 includes a first sound receiving mechanism 41 and a second sound receiving mechanism 42. The first sound receiving mechanism 41 includes: a rotary cylinder 411 disposed on the clamp platform 35, and a rotary arm 412 disposed on an output end of the rotary cylinder 411. The second radio mechanism 42 includes a radio support 421 disposed at the bottom of the turning platform 35. The microphone 43 is disposed on both the rotating arm 412 and the sound receiving bracket 421. The first sound receiving mechanism 41 and the second sound receiving mechanism 42 respectively collect sounds from different directions of the fan, so that the accuracy of a sound collection result is improved. Meanwhile, the rotating arm 412 can be driven to rotate by the rotating cylinder 411, so that the interference of the microphone 43 on the clamping and taking out of the fan is avoided, and the sound receiving requirement of the microphone is met.
A plurality of positioning cylinders are arranged beside the overturning platform 33 and the clamp platform 35. When the turnover mechanism 32 drives the turnover platform 33 to move to a set angle or the rotating mechanism 34 drives the clamp platform 35 to move to a set angle, the turnover platform 33 and the clamp platform 35 are fixed through the positioning cylinder, so that the accuracy of the detection angle is improved.
And a sound insulation door 11 is arranged on the case 1 corresponding to the sealed sound insulation cabin 2, and the sound insulation door 11 covers the sealed sound insulation cabin 2. Through setting up soundproof door 11, when making things convenient for packing into and taking out of fan, improve sealed soundproof cabin 2's syllable-dividing effect, avoid external noise to exert an influence to the testing result of fan, improve testing result's accuracy.
The invention also provides a fan noise testing method, which comprises the following steps:
step 1: the fan to be detected is placed on the clamp platform 35, the wiring terminal of the fan is connected with the interface on the clamp platform 35, and the fan is clamped, so that the fan is clamped and fixed under different angle positions.
Step 2: and working parameters such as voltage, current and rotating speed of the fan are set, so that the fan is started to enter a working state, the rotating speed of the fan is automatically adjusted, and the degree of automation of detection is improved.
And step 3: and a fixed percentage value is set, so that the working state of the fan can be monitored conveniently.
And 4, step 4: the turnover mechanism 32 drives the turnover platform 33 to rotate to different set angles, and respectively performs radio collection at two fixed rotation speeds at each corresponding angle, and analyzes and judges radio results. The specific steps of the step 4 are as follows:
step 4.1: the overturning platform 33 is located at the first detection position, and at this time, the overturning platform 33 is located at the 0-degree position;
step 4.2: controlling the fan to work at a first set rotating speed, carrying out radio collection work by the radio mechanism 4, and analyzing a radio result through the system;
step 4.3: controlling the fan to work at a second set rotating speed, carrying out radio collection work by the radio mechanism 4, and analyzing a radio result through the system;
step 4.4: the turnover mechanism 32 drives the turnover platform 33 to turn over, so that the turnover platform 33 is located at the second detection position, and at the moment, the turnover platform 33 is located at a 90-degree position;
step 4.5: controlling the fan to work at a first set rotating speed, carrying out radio collection work by the radio mechanism 4, and analyzing a radio result through the system;
step 4.6: controlling the fan to work at a second set rotating speed, carrying out radio collection work by the radio mechanism 4, and analyzing a radio result through the system;
step 4.7: the turnover mechanism 32 drives the turnover platform 33 to turn over, so that the turnover platform 33 is located at a third detection position, and at the moment, the turnover platform 33 is located at a 180-degree position;
step 4.8: controlling the fan to work at a first set rotating speed, carrying out radio collection work by the radio mechanism 4, and analyzing a radio result through the system;
step 4.9: controlling the fan to work at a second set rotating speed, carrying out radio collection work by the radio mechanism 4, and analyzing a radio result through the system;
step 4.10: the turnover mechanism 32 drives the turnover platform 33 to turn over, so that the turnover platform 33 moves to the initial position, and the turnover platform 33 is at the 0 ° position.
And 5: the rotating mechanism 34 drives the clamp platform 35 to rotate for 0-180 degrees, and the step 4 is repeated at different angles to perform radio collection and analysis and judgment of radio collection results.
Step 6: and storing the test data, and taking out the fan for receiving the test to finish the test.
The invention realizes 360-degree rotation automatic radio reception test in more than two directions, solves the problem of radio reception test of the radiator fan in the movement process, simultaneously realizes the rotation speed detection of the radiator fan, improves the fan detection efficiency, improves the accuracy of the fan test result and meets the fan detection requirement.
And if the detected rotating speed and the detected noise do not meet the test requirements, executing the step 6, ending the test, and re-executing the step 1 and putting the fan to be detected. When the detected numerical value has abnormal conditions or does not meet the set requirements of the test, the test is automatically finished, detection personnel is reminded to carry out corresponding treatment, the detection is carried out again, the influence of the abnormal conditions on the detection result is eliminated, and therefore the accuracy of the detection result is improved.
In summary, the invention respectively realizes the noise detection of the fan at different angles in the different axial directions through the turnover mechanism and the rotating mechanism, and realizes the rotation speed detection of the fan at the same time of the noise detection, so as to improve the detection efficiency of the fan.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A fan noise testing system, comprising: case, set up in sealed syllable-dividing cabin of quick-witted incasement, set up in sealed syllable-dividing cabin inside test platform and set up in a plurality of radio mechanism of test platform side, radio mechanism evenly distributed is in the test platform side, test platform includes: the fixture comprises a fixed platform, a turnover mechanism arranged on the fixed platform, a turnover platform connected with the output end of the turnover mechanism, a rotating mechanism arranged on the turnover platform, and a fixture platform connected with the output end of the rotating mechanism, wherein the turnover mechanism drives the turnover platform to turn over, and the rotating mechanism drives the fixture platform to rotate.
2. The fan noise testing system of claim 1, wherein the flipping mechanism comprises: driving motor, with drive mechanism that driving motor's output is connected and set up in the upset support of fixed platform both sides, the upset platform sets up between the both sides upset support, drive mechanism is connected with the upset platform, driving motor side is provided with noise cancelling mechanism.
3. The fan noise testing system of claim 1, wherein the fixture platform has a plurality of clamping mechanisms disposed thereon, the clamping mechanisms comprising: the clamping device comprises a clamping seat arranged on the clamp platform, a clamping cylinder arranged below the clamping seat and a clamping block connected with the output end of the clamping cylinder, wherein the clamping block is hinged on the clamping seat, one end of the clamping block is connected with the clamping cylinder, and the other end of the clamping block is provided with a soft rubber block.
4. The fan noise testing system of claim 1, wherein the sound pickup mechanism comprises a first sound pickup mechanism and a second sound pickup mechanism, the first sound pickup mechanism comprising: set up in last revolving cylinder of anchor clamps platform and set up in swinging boom on revolving cylinder's the output, second radio mechanism including set up in the radio reception support of upset platform bottom, all be provided with the microphone on swinging boom and the radio reception support.
5. The fan noise testing system of claim 1, wherein a plurality of positioning cylinders are disposed beside the turning platform and the clamp platform.
6. The fan noise test system according to claim 1, wherein a soundproof door is provided on the cabinet corresponding to the sealed soundproof compartment, and the soundproof door covers the sealed soundproof compartment.
7. A fan noise testing method is characterized by comprising the following steps:
step 1: placing a fan to be detected on a clamp platform, connecting a wiring terminal of the fan with an interface on the clamp platform, and clamping the fan;
step 2: setting working parameters of the fan to enable the fan to be started to enter a working state;
and step 3: setting a fixed percentage value to facilitate monitoring the working state of the fan;
and 4, step 4: the turnover mechanism drives the turnover platform to rotate to different set angles, and respectively carries out radio collection at two fixed rotating speeds at each corresponding angle, and analyzes and judges radio results;
and 5: the rotating mechanism drives the clamp platform to rotate to different set angles, and the step 4 is repeated at different angles to perform radio collection and analysis and judgment of radio results;
step 6: and storing the test data, and taking out the fan for receiving the test to finish the test.
8. The fan noise testing method according to claim 7, wherein the specific steps of the step 4 are as follows:
step 4.1: the overturning platform is located at a first detection position, and is located at a 0-degree position at the moment;
step 4.2: controlling the fan to work at a first set rotating speed, carrying out radio collection work by the radio mechanism, and analyzing a radio result through the system;
step 4.3: controlling the fan to work at a second set rotating speed, carrying out radio collection work by the radio mechanism, and analyzing a radio result through the system;
step 4.4: the turnover mechanism drives the turnover platform to turn over, so that the turnover platform is located at a second detection position, and the turnover platform is located at a 90-degree position at the moment;
step 4.5: controlling the fan to work at a first set rotating speed, carrying out radio collection work by the radio mechanism, and analyzing a radio result through the system;
step 4.6: controlling the fan to work at a second set rotating speed, carrying out radio collection work by the radio mechanism, and analyzing a radio result through the system;
step 4.7: the turnover mechanism drives the turnover platform to turn over, so that the turnover platform is located at a third detection position, and the turnover platform is located at a 180-degree position at the moment;
step 4.8: controlling the fan to work at a first set rotating speed, carrying out radio collection work by the radio mechanism, and analyzing a radio result through the system;
step 4.9: controlling the fan to work at a second set rotating speed, carrying out radio collection work by the radio mechanism, and analyzing a radio result through the system;
step 4.10: the turnover mechanism drives the turnover platform to turn over, so that the turnover platform moves to an initial position, and the turnover platform is located at 0 degree.
9. The fan noise testing method according to claim 7, wherein in the step 5, the rotating mechanism drives the clamp platform to rotate by a set angle of 0-180 °.
10. The fan noise testing method according to claim 7, wherein if the detected rotation speed and noise do not meet the testing requirements, step 6 is executed, the test is ended, and step 1 is executed again to place the fan to be tested.
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| CN202110882082.7A CN113465730A (en) | 2021-08-02 | 2021-08-02 | Fan noise test system and test method |
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| CN202110882082.7A CN113465730A (en) | 2021-08-02 | 2021-08-02 | Fan noise test system and test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117145792A (en) * | 2023-02-07 | 2023-12-01 | 荣耀终端有限公司 | Fan abnormal sound detection method and fan abnormal sound detection system |
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2021
- 2021-08-02 CN CN202110882082.7A patent/CN113465730A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117145792A (en) * | 2023-02-07 | 2023-12-01 | 荣耀终端有限公司 | Fan abnormal sound detection method and fan abnormal sound detection system |
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Effective date of registration: 20230619 Address after: 410329 Room 101, phase II complex building, Changsha E center, No. 18, Xiangtai Road, Liuyang economic and Technological Development Zone, Changsha City, Hunan Province Applicant after: Hunan hemoni Technology Co.,Ltd. Address before: 518000 Room 101, No.8, Baolong factory area, Anbo technology, No.2, Baolong 4th Road, Baolong community, Baolong street, Longgang District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN HONZE AUTO-TECH CO.,LTD. |
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