An acoustic detection device

Abstract

The application relates to the technical field of noise detection systems, and provides an acoustic detection device, which comprises a mute room, at least two microphones and a test platform, the test platform is arranged in the mute room, the microphones are equidistantly distributed in the mute room with the test platform as the center, the test platform comprises a test table, a pressing tool and a switching driving piece, the pressing tool is installed on the test table, the test table is used for placing products, the pressing tool is movably arranged on the test table, the pressing tool comprises a movable pressing plate, and the switching driving piece is installed on the pressing plate and used for switching gears of the products. Therefore, the detection efficiency and the consistency and reliability of the detection results can be improved.

Description

Technical Field

[0001] This invention relates to the field of noise detection system technology, and more specifically to an acoustic detection device. Background Technology

[0002] As consumers increasingly demand quiet operation from home appliances, noise control has become one of the key indicators for measuring product quality, and corresponding testing technologies and equipment are receiving more and more attention.

[0003] In some scenarios, such as in a soundproof room, noise testing of a product during startup is highly subjective and subject to significant human intervention. Furthermore, when testing noise levels in different states, it is necessary to switch product states manually before testing. This process relies heavily on manual labor, resulting in low efficiency and difficulty in ensuring consistent test results.

[0004] Therefore, this application studies an acoustic testing device that improves testing efficiency and the consistency and reliability of testing results. Utility Model Content

[0005] In order to improve detection efficiency and the consistency and reliability of detection results, this application provides an acoustic detection device.

[0006] This application provides an acoustic testing device, which adopts the following technical solution: An acoustic testing device includes a soundproof room, at least two microphones, and a testing platform. The testing platform is located in the soundproof room, and the microphones are equidistantly distributed within the soundproof room with the testing platform as the center. The testing platform includes a testing table, a pressing fixture, and a switching drive. The pressing fixture is mounted on the testing table, and the testing table is used to place a product. The pressing fixture is movably mounted on the testing table and includes a movable pressing plate. The switching drive is mounted on the pressing plate and is used to switch the product's gear position.

[0007] By adopting the above technical solution, the pressing fixture controlled by the switching drive component realizes the automated operation of product gear switching, improving the detection efficiency; the soundproof room and equidistantly distributed microphones provide a low-noise and uniform measurement environment for acoustic detection, effectively reducing external interference and improving detection accuracy and consistency.

[0008] Optionally, it also includes a mounting bracket, on which an adjustment seat is provided. The adjustment seat can move vertically and horizontally along the mounting bracket, and the microphone is mounted on the adjustment seat.

[0009] By employing the above technical solution, the microphone placement can be precisely adjusted according to the acoustic center, size, and specific testing standard requirements of the product under test. This ensures that the microphone is always in the optimal pickup position. Optionally, the pressing fixture further includes a moving rod and a fixing component. The pressing plate is movably mounted on the moving rod. The fixing component includes a fixing block and a fixing bolt. Both the fixing block and the pressing plate are provided with clearance grooves. When the fixing block abuts against the pressing plate, the clearance grooves wrap around the periphery of the moving rod. The fixing bolts pass through the fixing block and are screwed to the pressing plate.

[0010] By adopting the above technical solution, it is possible to make quick adjustments according to the size and testing requirements of different products, which improves the versatility and adaptability of the equipment. The fasteners ensure that the pressing plate is firmly fixed on the moving rod, while facilitating quick disassembly and adjustment.

[0011] Optionally, the pressing plate has a strip hole and an adjusting bolt, and the adjusting bolt passes through the strip hole and is screwed to the switching drive component.

[0012] By adopting the above technical solution, precise adjustments can be made according to the specific location of the product and testing requirements, ensuring that the switching drive can accurately act on the product button, thereby improving the adaptability and testing accuracy of the equipment.

[0013] Optionally, the switching drive includes a cylinder and a switching element, wherein the cylinder drives the switching element to move, thereby pressing the product button and switching gears.

[0014] Optionally, the switching drive component further includes a movable seat, which is connected to the telescopic rod of the cylinder. The switching drive component also includes a movable bolt, which has a movable groove, and the movable bolt passes through the movable groove and is screwed to the switching component.

[0015] By adopting the above technical solutions, adjustments can be made quickly according to the specific location of the product and testing requirements, further improving the adaptability and testing accuracy of the equipment.

[0016] Optionally, a permanent magnet is provided on the telescopic rod of the cylinder, and two magnetic sensors are provided on one side of the cylinder body. When the sensors are respectively sensed by the permanent magnet, the cylinder is in the extended state and the retracted state, respectively.

[0017] By adopting the above technical solution, a permanent magnet is installed on the cylinder telescopic rod, and a magnetic sensor is installed on the cylinder body, thus realizing the precise detection and control of the cylinder position.

[0018] Optionally, a buffer pad is provided at the end of the switching component.

[0019] By adopting the above technical solution, on the one hand, the friction between the button and the product is increased, making the pressing more stable; on the other hand, it plays a buffering and protective role, protecting the button from damage, while reducing noise and vibration.

[0020] Optionally, it may also include a stage, which is placed on the test table for placing the product.

[0021] Optionally, a vibration sensor is also included, which is disposed on the side of the pressing plate facing the test platform, for detecting the vibration value generated when the product is in a high position during operation.

[0022] By adopting the above technical solution, it is possible to monitor the vibration value generated by the product when it is running at a high speed in real time, and to more comprehensively evaluate the product's performance.

[0023] In summary, this application includes the following beneficial technical effects: 1. The pressing fixture controlled by the switching drive realizes the automated operation of product gear switching, improving the detection efficiency; the soundproof room and equidistantly distributed microphones provide a low-noise and uniform measurement environment for acoustic detection, effectively reducing external interference and improving detection accuracy and consistency. 2. The movable slot can be quickly adjusted according to the specific position of the product and testing requirements, further improving the adaptability of the equipment and the testing accuracy; 3. Vibration sensors can monitor the vibration values ​​generated by the product when it is running at high speed in real time, and more comprehensively evaluate the product's performance. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0025] In the diagram: Figure 1 This is a schematic diagram illustrating the external structure of the acoustic testing equipment in the embodiment of this application, showing the exterior of the soundproof room. Figure 2 This is a schematic diagram illustrating the internal structure of a soundproof room using the acoustic testing equipment described in this application embodiment; Figure 3 This is a schematic diagram of the test platform in the acoustic testing equipment of this application embodiment.

[0026] Reference numerals: 1. Soundproof room; 2. Microphone; 3. Test platform; 31. Test table; 32. Pressing fixture; 321. Pressing plate; 322. Moving rod; 323. Fixing block; 33. Switching drive; 331. Cylinder; 332. Switching component; 333. Moving seat; 334. Moving slot; 335. Magnetic sensor; 34. Platform; 4. Mounting bracket; 5. Adjusting seat; 6. Crossbar; 7. Strip hole; 8. Computer and test acquisition card cabinet; 9. Door / exit. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0028] This application discloses an acoustic testing device. (Refer to...) Figure 1 and Figure 2 The acoustic testing equipment includes a soundproof room 1, at least two microphones 2, and a test platform 3. The soundproof room 1 is equipped with an entrance / exit door 9 and an observation window. Outside the soundproof room 1, a computer and test data acquisition card cabinet 8 are installed for collecting noise from the microphones 2 and for controlling and receiving feedback from the test platform 3. The test platform 3 is located inside the soundproof room 1. The microphones 2 are equidistantly distributed within the soundproof room 1, centered on the test platform 3. In this embodiment, with the entrance / exit door 9 as the reference point in front of the test platform 3, one microphone 2 is placed on the left, right, rear, and 750mm above the product on the test platform 3. This distance is the distance between the center of the product and the center of the microphone 2. The soundproof room 1 and the equidistantly distributed microphones 2 provide a low-noise and uniform measurement environment for acoustic testing, effectively reducing external interference and improving testing accuracy and consistency.

[0029] The testing platform 3 also includes a stage 34, which is placed on the testing table 31 to hold the product, ensuring the product is stably placed on the testing table 31 and remains stable when the product button is pressed. The testing platform 3 includes a testing table 31, a pressing fixture 32, and a switching drive 33. The pressing fixture 32 is mounted on the testing table 31, which is used to hold the product. The pressing fixture 32 is movably positioned on the testing table 31 and includes a movable pressing plate 321. The switching drive 33 is mounted on the pressing plate 321 and used to switch the product's gear position. The pressing fixture 32, controlled by the switching drive 33, automates the product gear position switching operation, improving testing efficiency.

[0030] Reference Figure 2In some embodiments, the system further includes a mounting bracket 4, on which an adjustment seat 5 is provided. The adjustment seat 5 is movable vertically and horizontally along the mounting bracket 4, and the microphone 2 is mounted on the adjustment seat 5. The mounting bracket 4 includes a crossbar 6, the two ends of which are fixed to the mounting bracket 4 by screws and can move vertically along the mounting bracket 4. The adjustment seat 5 is fitted onto the crossbar 6 and fixed by bolts. By loosening the bolts, the adjustment seat 5 can be moved horizontally along the crossbar 6 to adjust the position of the microphone 2.

[0031] Reference Figure 3 In some embodiments, the pressing fixture 32 further includes a movable rod 322 and a fixing member. The pressing plate 321 is movably mounted on the movable rod 322. The fixing member includes a fixing block 323 and a fixing bolt. Both the fixing block 323 and the pressing plate 321 have clearance grooves. When the fixing block 323 abuts against the pressing plate 321, the clearance grooves cover the periphery of the movable rod 322. The fixing bolt passes through the fixing block 323 and is screwed to the pressing plate 321. By loosening the fixing bolt, the pressing plate 321 can be moved along the movable rod 322 to adjust its height to accommodate products of different sizes.

[0032] In some embodiments, the pressing plate 321 has a slotted hole 7 and an adjusting bolt, which passes through the slotted hole 7 and is screwed to the switching drive member 33. The adjusting bolt moves along the slotted hole 7, which can change the position of the switching drive member 33 on the pressing plate 321, thereby moving it closer to or further away from the product, so as to accommodate products of different sizes.

[0033] In some embodiments, the switching drive 33 includes a cylinder 331 and a switching element 332. The cylinder 331 drives the switching element 332 to move, thereby pressing the product button and switching gears. The end of the switching element 332 has a conical structure and an arc, which avoids damaging the button while allowing for precise pressing of the button to switch product gears.

[0034] In some embodiments, the switching drive 33 further includes a movable base 333, which is connected to the telescopic rod of the cylinder 331. The switching drive 33 also includes a movable bolt. The movable base 333 has a movable groove 334, through which the movable bolt passes and is screwed to the switching member 332. The movable groove 334 allows the switching member 332 to move in a direction perpendicular to the movement of the cylinder 331, enabling the switching member 332 to be adjusted in four directions (front, back, left, and right) to better adapt to different products.

[0035] In some embodiments, a permanent magnet is provided on the telescopic rod of the cylinder 331, and two magnetic sensors 335 are provided on one side of the cylinder 331 body. When the sensors are sensed by the permanent magnet, the cylinder 331 is in the extended state and the retracted state, respectively. Two staggered mounting slots are provided on the side of the cylinder 331 body. The two magnetic sensors 335 are respectively located in the two mounting slots, one near the front and one near the rear, so as to sense the extended and retracted states of the telescopic rod, thereby enabling better control of the extension and retraction of the cylinder 331 and allowing for more precise button pressing.

[0036] In some embodiments, a buffer pad is provided at the end of the switching member 332. The buffer pad is made of silicone, which increases the friction with the product button, making the pressing more stable; on the other hand, it plays a buffering and protective role, protecting the product button from damage, while reducing the generation of noise and vibration.

[0037] In some embodiments, a vibration sensor is also included, which is disposed on the side of the pressing plate 321 facing the test stage 31, for detecting the vibration value generated when the product is in a high-level position. Moving the pressing plate 321 so that the vibration sensor is in contact with the product allows for testing of the product's vibration value.

[0038] The implementation principle of an acoustic testing device according to an embodiment of this application is as follows: the pressing fixture 32 controlled by the switching drive 33 realizes the automated operation of product gear switching, thereby improving testing efficiency; the quiet room 1 and the equidistantly distributed microphones 2 provide a low-noise and uniform measurement environment for acoustic testing, effectively reducing external interference and improving testing accuracy and consistency.

[0039] The above are exemplary embodiments disclosed in this invention. However, it should be noted that various changes and modifications can be made without departing from the scope of the embodiments of this invention as defined by the claims. The functions, steps, and / or actions of the methods according to the disclosed embodiments described herein do not need to be performed in any particular order. Furthermore, although the elements disclosed in the embodiments of this invention may be described or claimed individually, they may be understood as multiple unless explicitly limited to a singular number.

[0040] It should be understood that, as used herein, the singular form "a" is intended to include the plural form as well, unless the context clearly supports an exception. It should also be understood that, as used herein, "and / or" refers to any and all possible combinations of one or more of the associatedly listed items. The embodiment numbers disclosed above are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0041] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples. Within the framework of the invention, technical features of the above embodiments or different embodiments can be combined, and many other variations of different aspects of the invention exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. An acoustic testing device, characterized in that: The device includes a soundproof room, at least two microphones, and a testing platform. The testing platform is located in the soundproof room, and the microphones are equidistantly distributed within the soundproof room with the testing platform as the center. The testing platform includes a testing table, a pressing fixture, and a switching drive. The pressing fixture is mounted on the testing table, which is used to place the product. The pressing fixture is movably mounted on the testing table and includes a movable pressing plate. The switching drive is mounted on the pressing plate and is used to switch the product's gear position.

2. The acoustic testing device according to claim 1, characterized in that: It also includes a mounting bracket, on which an adjustment seat is provided. The adjustment seat can move vertically and horizontally along the mounting bracket, and the microphone is mounted on the adjustment seat.

3. The acoustic testing device according to claim 1, characterized in that: The pressing fixture also includes a movable rod and a fixing component. The pressing plate is movably mounted on the movable rod. The fixing component includes a fixing block and a fixing bolt. Both the fixing block and the pressing plate are provided with clearance grooves. When the fixing block abuts against the pressing plate, the clearance grooves wrap around the periphery of the movable rod. The fixing bolts pass through the fixing block and are screwed to the pressing plate.

4. The acoustic testing device according to claim 1, characterized in that: The pressing plate has a strip-shaped hole and an adjusting bolt, and the adjusting bolt passes through the strip-shaped hole and is screwed to the switching drive component.

5. An acoustic testing device according to claim 1, characterized in that: The switching drive includes a cylinder and a switching element. The cylinder drives the switching element to move, thereby pressing the product button and switching gears.

6. An acoustic testing device according to claim 5, characterized in that: The switching drive also includes a movable seat, which is connected to the telescopic rod of the cylinder. The switching drive also includes a movable bolt, which has a movable groove, and the movable bolt passes through the movable groove and is screwed to the switching component.

7. An acoustic testing device according to claim 6, characterized in that: The cylinder has a permanent magnet on its telescopic rod, and two magnetic sensors are located on one side of the cylinder body. When the sensors sense the permanent magnet, the cylinder is in the extended state and the retracted state, respectively.

8. An acoustic testing device according to claim 5, characterized in that: A buffer pad is provided at the end of the switching component.

9. An acoustic testing device according to claim 1, characterized in that: It also includes a platform, which is placed on the test platform for placing the product.

10. An acoustic testing device according to claim 1, characterized in that: It also includes a vibration sensor, which is disposed on the side of the pressing plate facing the test platform, and is used to detect the vibration value generated when the product is in a high position during operation.

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