A fan noise testing system and testing method

Abstract

The present invention discloses a fan noise test system and test method, comprising: a chassis, a sealed soundproof cabin, a test platform, and a plurality of radio mechanisms, the radio mechanisms are evenly distributed beside the test platform, the test platform comprises: a fixed platform, a flip mechanism arranged on the fixed platform, a flip platform connected to the output end of the flip mechanism, a rotating mechanism arranged on the flip platform, and a fixture platform connected to the output end of the rotating mechanism, the flip mechanism drives the flip platform to flip, and the rotating mechanism drives the fixture platform to rotate. The present invention realizes noise detection at various angles on different axial directions of the fan through the flip mechanism and the rotating mechanism, and realizes the speed detection of the fan at the same time as the noise detection, thereby improving the detection efficiency of the fan, and compared with manual detection, improving the accuracy of the detection result, so as to detect whether the radiator fan under test meets the use requirements of the system with high production real-time and stability requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of audio and electronic measurement, and in particular to a fan noise testing system and a testing method. Background Art

[0002] In recent years, the problem of cooling fan noise has gradually emerged with the rapid popularization of home computers and the extensive use of high-power chips. The sources of fan noise mainly include the rotation noise, eddy current noise and resonance noise generated by the fan blades themselves when they rotate, as well as the unbalanced vibration of the fan body caused by the unequal weight of the fan blades. The three levels of noise 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 comes from the mold accuracy and defects in the production process. When this unbalanced vibration of the fan body is transmitted to the chassis or heat sink, it will cause the chassis or heat sink to produce steady-state vibration and generate greater vibration noise. Therefore, it is necessary to detect the unbalanced vibration of the fan before the fan leaves the factory.

[0003] There are two main types of fan speed or noise test systems at present:

[0004] 1) Set the speed adjustment threshold, and adjust the threshold range to make the fan work at the required speed. This method can ensure that the product can meet the speed requirements, but the disadvantage is that it cannot detect whether the fan has abnormal noise.

[0005] 2) Manually set a fixed Duty value and perform manual listening at 5 angles while the fan is rotating. This method is the most stable and can ensure the association of the response status between the product and the user. The disadvantage is that there is no test record, it cannot be traced, and it cannot ensure 100% coverage of the test.

[0006] The traditional fan testing method and system are used to solve the problem that the fan testing is currently done entirely by manual operation, which is time-consuming and labor-intensive and cannot be used to check and analyze the test results. The disadvantages of this method are that there is no record traceability, there are differences in manual standards, and it cannot meet the production requirements of systems with high real-time and stability requirements.

[0007] Therefore, the prior art has defects and needs to be improved. Summary of the invention

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a fan noise testing system and a testing method.

[0009] The technical solution of the present invention is as follows: a fan noise testing system is provided, comprising: a chassis, a sealed soundproof cabin arranged in the chassis, a test platform arranged inside the sealed soundproof cabin, and a plurality of radio mechanisms arranged beside the test platform, the radio mechanisms are evenly distributed beside the test platform, the test platform comprises: a fixed platform, a flipping mechanism arranged on the fixed platform, a flipping platform connected to the output end of the flipping mechanism, a rotating mechanism arranged on the flipping platform, and a fixture platform connected to the output end of the rotating mechanism, the flipping mechanism drives the flipping platform to flip, and the rotating mechanism drives the fixture platform to rotate.

[0010] Furthermore, the flipping mechanism includes: a driving motor, a transmission mechanism connected to the output end of the driving motor, and a flipping bracket arranged on both sides of the fixed platform, the flipping platform is arranged between the flipping brackets on both sides, the transmission mechanism is connected to the flipping platform, and a silencer mechanism is arranged next to the driving motor.

[0011] Furthermore, a plurality of clamping mechanisms are arranged on the clamping platform, and the clamping mechanisms include: a clamping seat arranged on the clamping platform, a clamping cylinder arranged below the clamping seat, and a clamping block connected to the output end of the clamping cylinder, the clamping block is hinged on the clamping seat, one end of the clamping block is connected to the clamping cylinder, and a soft rubber block is arranged on the other end of the clamping block.

[0012] Furthermore, the radio mechanism includes a first radio mechanism and a second radio mechanism, the first radio mechanism includes: a rotating cylinder arranged on the clamp platform, and a rotating arm arranged on the output end of the rotating cylinder, the second radio mechanism includes a radio bracket arranged at the bottom of the flip platform, and microphones are arranged on the rotating arm and the radio bracket.

[0013] Furthermore, a plurality of positioning cylinders are arranged on the sides of the turning platform and the clamping platform.

[0014] Furthermore, a soundproof door is provided on the chassis corresponding to the sealed soundproof cabin, and the soundproof door covers the sealed soundproof cabin.

[0015] The present invention also provides a fan noise testing method, comprising the following steps:

[0016] Step 1: Place the fan to be tested on the fixture platform, connect the fan's wiring terminals to the interface on the fixture platform, and clamp the fan;

[0017] Step 2: Set the fan's operating parameters so that the fan starts to work;

[0018] Step 3: Set a fixed percentage value to monitor the working status of the fan;

[0019] Step 4: The flipping mechanism drives the flipping platform to rotate to different set angles, and performs sound collection at two fixed rotation speeds at each corresponding angle, and analyzes and determines the sound collection results;

[0020] Step 5: The rotating mechanism drives the fixture platform to rotate to different set angles, and repeats step 4 at different angles to collect sound and analyze and determine the sound collection results;

[0021] Step 6: Save the test data, take out the fan to be tested, and complete the test.

[0022] Furthermore, the specific steps of step 4 are:

[0023] Step 4.1: The flip platform is located at the first detection position, at which time the flip platform is at the 0° position;

[0024] Step 4.2: Control the fan to work at the first set speed, the radio mechanism to perform sound collection, and analyze the sound collection results through the system;

[0025] Step 4.3: Control the fan to work at the second set speed, the radio mechanism to perform sound collection, and analyze the sound collection results through the system;

[0026] Step 4.4: The flipping mechanism drives the flipping platform to flip so that the flipping platform is located at the second detection position. At this time, the flipping platform is at a 90° position;

[0027] Step 4.5: Control the fan to work at the first set speed, the radio mechanism to perform sound collection, and analyze the sound collection results through the system;

[0028] Step 4.6: Control the fan to work at the second set speed, the radio mechanism to perform sound collection, and analyze the sound collection results through the system;

[0029] Step 4.7: The flipping mechanism drives the flipping platform to flip so that the flipping platform is located at the third detection position. At this time, the flipping platform is at a 180° position;

[0030] Step 4.8: Control the fan to work at the first set speed, the radio mechanism to perform sound collection, and analyze the sound collection results through the system;

[0031] Step 4.9: Control the fan to work at the second set speed, the radio mechanism to perform sound collection, and analyze the sound collection results through the system;

[0032] Step 4.10: The flipping mechanism drives the flipping platform to flip, so that the flipping platform moves to the initial position, at which time the flipping platform is at the 0° position.

[0033] Furthermore, in step 5, the setting angle of the rotation of the fixture platform driven by the rotating mechanism is 0°-180°.

[0034] Furthermore, if the detected rotation speed and noise do not meet the test requirements, execute step 6 to end the test, and re-execute step 1 to put in the fan to be tested.

[0035] By adopting the above scheme, the present invention realizes noise detection at various angles on different axial directions of the fan through a flipping mechanism and a rotating mechanism, and realizes fan speed detection at the same time as noise detection, thereby improving the detection efficiency of the fan. Compared with manual detection, the accuracy of the detection result is improved to detect whether the radiator fan under test meets the use requirements of the system with high real-time and stability requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the present invention.

[0037] Figure 2 for Figure 1 A partial enlarged schematic diagram in the middle.

[0038] Figure 3 It is a schematic diagram of the rear structure of the present invention.

[0039] Figure 4 for Figure 3 A partial enlarged schematic diagram of point B in the middle. DETAILED DESCRIPTION

[0040] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] See also Figure 1 , Figure 2 The present invention provides a fan noise test system, comprising: a chassis 1, a sealed soundproof cabin 2 arranged in the chassis 1, a test platform 3 arranged inside the sealed soundproof cabin 2, and a plurality of radio mechanisms 4 arranged beside the test platform 3. The radio mechanisms 4 are evenly distributed beside the test platform 3. The test platform 3 comprises: a fixed platform 31, a flipping mechanism 32 arranged on the fixed platform 31, a flipping platform 33 connected to the output end of the flipping mechanism 32, a rotating mechanism 34 arranged on the flipping platform 33, and a fixture platform 35 connected to the output end of the rotating mechanism 34. The flipping mechanism 32 drives the flipping platform 33 to flip, and the rotating mechanism 34 drives the fixture platform 35 to rotate.

[0042] During operation, the fan to be tested is placed on the fixture platform 35, the fan's wiring terminals are connected to the interface on the fixture platform 35, and the fan is clamped. Then the fan's working parameters and fixed percentage values ​​are set, and the fan is started to rotate. The flipping platform 33 is driven to rotate around the X-axis to different angles through the flipping mechanism 32, and the noise of the fan is collected through the radio mechanism 4. After completing the sound collection at different angles, the flipping mechanism 32 drives the flipping platform 33 to rotate to the initial position. The rotating mechanism 34 is started to drive the fixture 35 platform to rotate around the Z-axis to different angles. Then the flipping platform 33 is driven to rotate around the X-axis to different angles through the flipping mechanism 32, and the noise at different angles is collected respectively through the radio mechanism 4. After completing the noise collection, the radio reception results are analyzed and determined by the system for inspection personnel to review. Then the test data is saved, and the fan that has completed the test is taken out to complete the radio reception detection at different angles with a fixed duty value.

[0043] When the flip platform 33 moves to different detection angles under the drive of the flip mechanism 32, the fan works at different speeds according to the set working parameter values, and the sound of the fan is collected through the radio mechanism 4, and the system performs data analysis to detect whether the fan meets the speed requirements.

[0044] The flip mechanism 32 includes: a driving motor 321, a transmission mechanism 322 connected to the output end of the driving motor 321, and a flip bracket 323 arranged on both sides of the fixed platform. The flip platform 33 is arranged between the flip brackets 323 on both sides, and the transmission mechanism 322 is connected to the flip platform 33. A muffler mechanism 324 is arranged beside the driving motor 321. When the driving motor 321 is started, the power is transmitted to the flip platform 33 through the transmission mechanism 322, so that the flip platform 33 is flipped, thereby realizing noise detection at different angles. At the same time, by arranging the muffler mechanism 324 beside the driving motor 321, the noise generated when the driving motor 321 is working is absorbed to avoid affecting the noise detection result of the fan.

[0045] The clamping platform 35 is provided with a plurality of clamping mechanisms 351, and the clamping mechanisms 351 include: a clamping seat provided on the clamping platform 35, a clamping cylinder provided below the clamping seat, and a clamping block connected to the output end of the clamping cylinder. The clamping block is hinged on the clamping seat, and one end of the clamping block is connected to the clamping cylinder. A soft rubber block is provided on the other end of the clamping block. When the clamping cylinder is started, the output end of the clamping cylinder is pushed upward, pushing the clamping block to rotate around the hinge position, so that the soft rubber block is pressed against the fan, thereby clamping and fixing the fan to the clamping platform 35.

[0046] See also Figure 3 , Figure 4 , the radio mechanism 4 includes a first radio mechanism 41 and a second radio mechanism 42. The first radio mechanism 41 includes: a rotating cylinder 411 arranged on the clamp platform 35, and a rotating arm 412 arranged on the output end of the rotating cylinder 411. The second radio mechanism 42 includes a sound receiving bracket 421 arranged at the bottom of the flip platform 35. A microphone 43 is provided on both the rotating arm 412 and the sound receiving bracket 421. The first radio mechanism 41 and the second radio mechanism 42 are used to collect sound from different directions of the fan, respectively, to improve the accuracy of the sound collection result. At the same time, the rotating arm 412 can be driven to rotate by the rotating cylinder 411, so as to avoid interference of the microphone 43 with the clamping and removal of the fan, and meet the sound receiving requirements of the microphone.

[0047] A plurality of positioning cylinders are arranged on the sides of the flipping platform 33 and the fixture platform 35. When the flipping mechanism 32 drives the flipping platform 33 to move to a set angle, or the rotating mechanism 34 drives the fixture platform 35 to move to a set angle, the flipping platform 33 and the fixture platform 35 are fixed by the positioning cylinders to improve the accuracy of the detection angle.

[0048] The chassis 1 is provided with a soundproof door 11 corresponding to the sealed soundproof cabin 2, and the soundproof door 11 covers the sealed soundproof cabin 2. By providing the soundproof door 11, the sound insulation effect of the sealed soundproof cabin 2 is improved while facilitating the installation and removal of the fan, avoiding the influence of external noise on the detection result of the fan, and improving the accuracy of the detection result.

[0049] The present invention also provides a fan noise testing method, comprising the following steps:

[0050] Step 1: Place the fan to be tested on the fixture platform 35, connect the fan's wiring terminals to the interfaces on the fixture platform 35, and clamp the fan so as to clamp and fix the fan at different angles.

[0051] Step 2: Set the fan's operating parameters such as voltage, current, and speed so that the fan starts to work, thereby achieving automatic adjustment of the fan speed and improving the degree of automation of detection.

[0052] Step 3: Set a fixed percentage value to monitor the fan's working status.

[0053] Step 4: The flip mechanism 32 drives the flip platform 33 to rotate to different set angles, and performs sound collection at two fixed rotation speeds at each corresponding angle, and analyzes and determines the sound collection results. The specific steps of step 4 are:

[0054] Step 4.1: The flip platform 33 is located at the first detection position, at which time the flip platform 33 is at the 0° position;

[0055] Step 4.2: Control the fan to work at a first set speed, the radio unit 4 performs sound collection, and analyzes the sound collection results through the system;

[0056] Step 4.3: Control the fan to work at the second set speed, the radio unit 4 performs sound collection work, and analyzes the sound collection results through the system;

[0057] Step 4.4: The flipping mechanism 32 drives the flipping platform 33 to flip so that the flipping platform 33 is located at the second detection position. At this time, the flipping platform 33 is at a 90° position;

[0058] Step 4.5: Control the fan to work at the first set speed, the radio unit 4 performs sound collection, and analyzes the sound collection results through the system;

[0059] Step 4.6: Control the fan to work at the second set speed, the radio unit 4 performs sound collection, and analyzes the sound collection results through the system;

[0060] Step 4.7: The flipping mechanism 32 drives the flipping platform 33 to flip so that the flipping platform 33 is located at the third detection position. At this time, the flipping platform 33 is at a 180° position;

[0061] Step 4.8: Control the fan to work at the first set speed, the radio unit 4 performs sound collection, and analyzes the sound collection results through the system;

[0062] Step 4.9: Control the fan to work at the second set speed, the radio unit 4 performs sound collection, and analyzes the sound collection results through the system;

[0063] Step 4.10: The flipping mechanism 32 drives the flipping platform 33 to flip, so that the flipping platform 33 moves to the initial position. At this time, the flipping platform 33 is at the 0° position.

[0064] Step 5: The rotating mechanism 34 drives the fixture platform 35 to rotate 0-180 degrees, and repeats step 4 at different angles to collect sound and analyze and determine the sound collection results.

[0065] Step 6: Save the test data, take out the fan to be tested, and complete the test.

[0066] The present invention realizes 360° rotation automatic sound reception test in more than two directions, solves the problem of sound reception test of the radiator fan during movement, and simultaneously realizes rotation speed detection of the radiator fan, improves fan detection efficiency, and improves the accuracy of fan test results, meeting fan detection requirements.

[0067] If the detected speed and noise do not meet the test requirements, execute step 6 to end the test, and re-execute step 1 to put in the fan to be tested. When the detected values ​​are abnormal or do not meet the set requirements of the test, the test is automatically ended, and the test personnel are reminded to take corresponding measures and then re-test to eliminate the influence of abnormal conditions on the test results, thereby improving the accuracy of the test results.

[0068] In summary, the present invention realizes noise detection at various angles in different axial directions of the fan through a flipping mechanism and a rotating mechanism, and realizes fan speed detection at the same time as noise detection, so as to improve the detection efficiency of the fan. Compared with manual detection, the accuracy of the detection result is improved to detect whether the radiator fan under test meets the use requirements of the system with high real-time and stability requirements.

[0069] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fan noise testing system, characterized in that: include: A chassis, a sealed soundproof cabin arranged in the chassis, a test platform arranged inside the sealed soundproof cabin, and a plurality of radio mechanisms arranged beside the test platform, wherein the test platform comprises: a fixed platform, a flipping mechanism arranged on the fixed platform, a flipping platform connected to the output end of the flipping mechanism, a rotating mechanism arranged on the flipping platform, and a fixture platform connected to the output end of the rotating mechanism, the flipping mechanism drives the flipping platform to flip, the rotating mechanism drives the fixture platform to rotate, a plurality of clamping mechanisms are arranged on the fixture platform, the clamping mechanism comprises: a clamping seat arranged on the fixture platform, a clamping cylinder arranged below the clamping seat, and a clamping block connected to the output end of the clamping cylinder, the clamping block is hinged on the clamping seat, one end of the clamping block is connected to the clamping cylinder, and a soft rubber block is arranged on the other end of the clamping block; The radio mechanism includes a first radio mechanism and a second radio mechanism. The first radio mechanism includes: a rotating cylinder arranged on the clamp platform, and a rotating arm arranged on the output end of the rotating cylinder. The second radio mechanism includes a radio bracket arranged at the bottom of the flip platform. Microphones are arranged on the rotating arm and the radio bracket.

2. The fan noise testing system according to claim 1, characterized in that: The flipping mechanism includes: a driving motor, a transmission mechanism connected to the output end of the driving motor, and flipping brackets arranged on both sides of the fixed platform. The flipping platform is arranged between the flipping brackets on both sides. The transmission mechanism is connected to the flipping platform. A silencer mechanism is arranged next to the driving motor.

3. The fan noise testing system according to claim 1, characterized in that: A plurality of positioning cylinders are arranged on the sides of the turning platform and the clamping platform.

4. The fan noise testing system according to claim 1, characterized in that: A soundproof door is arranged on the chassis corresponding to the sealed soundproof cabin, and the soundproof door covers the sealed soundproof cabin.

5. A fan noise testing method using the fan noise testing system according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: Place the fan to be tested on the fixture platform, connect the fan's wiring terminals to the interface on the fixture platform, and clamp the fan; Step 2: Set the fan's operating parameters so that the fan starts to work; Step 3: Set a fixed percentage value to monitor the working status of the fan; Step 4: The flipping mechanism drives the flipping platform to rotate to different set angles, and performs sound collection at two fixed rotation speeds at each corresponding angle, and analyzes and determines the sound collection results; Step 5: The rotating mechanism drives the fixture platform to rotate to different set angles, and repeats step 4 at different angles to collect sound and analyze and determine the sound collection results; Step 6: Save the test data, take out the fan to be tested, and complete the test.

6. The fan noise testing method according to claim 5, characterized in that: The specific steps of step 4 are: Step 4.1: The flip platform is located at the first detection position, at which time the flip platform is at the 0° position; Step 4.2: The fan is controlled to work at the first set speed, the radio mechanism performs radio collection, and the radio results are analyzed by the system; Step 4.3: Control the fan to work at the second set speed, the radio mechanism to perform sound collection, and analyze the sound collection results through the system; Step 4.4: The flipping mechanism drives the flipping platform to flip so that the flipping platform is located at the second detection position. At this time, the flipping platform is at a 90° position; Step 4.5: Control the fan to work at the first set speed, the radio mechanism to perform sound collection, and analyze the sound collection results through the system; Step 4.6: Control the fan to work at the second set speed, the radio mechanism to perform sound collection, and analyze the sound collection results through the system; Step 4.7: The flipping mechanism drives the flipping platform to flip so that the flipping platform is located at the third detection position. At this time, the flipping platform is at a 180° position; Step 4.8: Control the fan to work at the first set speed, the radio mechanism to perform sound collection, and analyze the sound collection results through the system; Step 4.9: Control the fan to work at the second set speed, the radio mechanism to perform sound collection, and analyze the sound collection results through the system; Step 4.10: The flipping mechanism drives the flipping platform to flip, so that the flipping platform moves to the initial position, at which time the flipping platform is at the 0° position.

7. The fan noise testing method according to claim 5, characterized in that: In step 5, the rotation mechanism drives the fixture platform to rotate at a set angle of 0°-180°.

8. The fan noise testing method according to claim 5, characterized in that: If the detected speed and noise do not meet the test requirements, go to step 6 to end the test, and then go back to step 1 to put in the fan to be tested.

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