Acoustic measurement device

Abstract

The invention discloses an acoustic measurement device, and relates to the technical field of acoustic detection, the acoustic measurement device comprises a plurality of measurement modules and a connection structure, each measurement module comprises a support and a microphone, and the plurality of supports are arranged at intervals along the circumferential direction of a device to be detected; the connecting structure comprises a connecting body and two fixing pieces, the two fixing pieces are arranged at the two ends, oppositely arranged in the first direction, of the connecting body correspondingly, and the two fixing pieces are used for fixing the two adjacent supports. The at least one fixing piece is arranged to be capable of being rotatably installed on the connecting body around the rotating axis extending in the second direction, so that the included angle formed between the two adjacent supports is adjustable, the number of the detection modules and the arrangement angle and position of each measurement module can be flexibly adjusted according to the measurement requirement, and the measurement accuracy is improved. The invention discloses an acoustic measurement device, and aims to provide an acoustic measurement device which can quickly and easily adjust the position of each unit in a microphone array and simplify the assembly and calibration process at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of acoustic detection, and in particular to an acoustic measuring device. Background Art

[0002] In the field of acoustic experiments, microphone array detection is a common method for evaluating the characteristics of non-steady-state sound sources. Especially when studying high-frequency sound fields, a high-density microphone array is essential for accurately reconstructing the sound field. However, since microphones themselves are precision devices that are sensitive to environmental conditions (such as temperature and humidity), they usually need to be stored in dedicated protective devices to maintain their performance.

[0003] Therefore, before each acoustic experiment, researchers must reassemble the microphone array and calibrate it to ensure the accuracy and reliability of data collection. This process is not only time-consuming and labor-intensive, but also poses a challenge to experimental efficiency. In addition, the position layout of the microphone has a direct impact on its detection results. Unfortunately, once the fixed bracket system currently used is installed, it is difficult to adjust the position of a single microphone, which limits the study of the effects of different position layouts. Summary of the invention

[0004] The main purpose of the present invention is to provide an acoustic measurement device, aiming to provide an acoustic measurement device that can quickly and easily adjust the positions of each unit in a microphone array while simplifying the assembly and calibration processes.

[0005] To achieve the above object, the acoustic measurement device proposed by the present invention comprises:

[0006] A plurality of measurement modules, each of which comprises a bracket and a microphone mounted on the bracket, and the plurality of measurement modules are arranged at intervals along the circumference of the device to be detected; and

[0007] A plurality of connection structures, each of the connection structures comprises a connection body and two fixing members, the connection body having two ends arranged opposite to each other in a first direction, the two fixing members being arranged at the two ends of the connection body, the two fixing members being used to fix two adjacent brackets, at least one of the fixing members being rotatably mounted on the connection body around a rotation axis extending in a second direction, so that the angle formed between the two adjacent brackets is adjustable.

[0008] In one embodiment, the connection structure further includes a locking structure disposed between the fixing member and the connection body, wherein the locking structure has a locking state for limiting the rotation of the fixing member relative to the connection body, and an unlocking state for releasing the rotation restriction of the fixing member.

[0009] In one embodiment, the locking structure includes two locking components, one of which has a first locking state that limits the rotation of the fixing member relative to the connecting body around a first clockwise direction, and a first unlocking state that releases the restriction on the rotation of the fixing member, and the other locking component has a second locking state that limits the rotation of the fixing member relative to the connecting body around a second clockwise direction, and a second unlocking state that releases the restriction on the rotation of the fixing member.

[0010] In one embodiment, the connection structure further comprises a rotation shaft, the rotation shaft is rotatably mounted on the connection body around the second direction, and the fixing member is connected to the peripheral side of the rotation shaft;

[0011] The locking structure further comprises:

[0012] two limiting parts, arranged at intervals in the second direction and coaxially connected to the rotating shaft; and,

[0013] Two matching parts can be movably installed on the connecting body, and each matching part has a locking position close to the corresponding limiting part and an unlocking position away from the limiting part. In the locking position, one matching part is used to limit the corresponding limiting part to rotate around the first clockwise direction, and the other matching part is used to limit the corresponding limiting part to rotate around the second clockwise direction.

[0014] In one embodiment, the limiting portion includes a ratchet, and the matching portion includes a pawl;

[0015] The teeth of the two ratchets are bent and arranged in opposite rotation directions.

[0016] In one embodiment, a limiting structure and a reset member are further provided between the connecting body and the mating portion, the limiting structure being used to limit the mating portion to the unlocked position, and the reset member being used to reset the mating portion from the unlocked position to the locked position.

[0017] In one embodiment, the connecting body has two mounting portions that are arranged opposite to each other and spaced apart in the second direction, and the mounting portions are provided with first limiting holes;

[0018] The matching portion is provided with a second limiting hole;

[0019] The limiting structure includes a limiting pin, and the limiting pin is penetrated through the first limiting hole and the second limiting hole to limit the matching part to the unlocking position.

[0020] In one embodiment, the mounting portion is further provided with a strip-shaped hole, and the matching portion is slidably disposed in the strip-shaped hole along the length direction of the strip-shaped hole, and can reach the locking position and the unlocking position during the sliding stroke of the matching portion.

[0021] In one embodiment, the fixing member includes an arc-shaped fixing portion arranged on the periphery of the connecting column of the bracket, and the two ends of the arc-shaped fixing portion in the circumferential direction respectively extend outward with clamping arms, and the two clamping arms are movably arranged in directions of approaching and moving away from each other, so that the distance between the two ends of the arc-shaped fixing portion is adjustable.

[0022] In one embodiment, the two clamp arms are both provided with connection holes, and the connection structure further includes a screw connection member penetrating through the two connection holes, and a locking nut sleeved on the periphery of the screw connection member.

[0023] In the technical solution of the present invention, the acoustic measurement device includes a plurality of measurement modules and a connection structure connecting two adjacent brackets of the measurement modules, the plurality of brackets are arranged at intervals along the circumference of the device to be detected, each of the brackets is mounted with a microphone for acoustic detection, and the two ends of the connection body that are oppositely arranged in the first direction are respectively provided with a fixing member, and the two fixing members are used to fix the two adjacent brackets, and at least one of the fixing members is arranged to be rotatably mounted on the connection body around a rotation axis extending in the second direction, so that the angle formed between the two adjacent brackets is adjustable, and the number of the detection modules, the arrangement angle and the position of each measurement module can be flexibly adjusted according to the measurement requirements, aiming to provide an acoustic measurement device that can quickly and easily adjust the position of each unit in the microphone array, while simplifying the assembly and calibration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figures 1 to 4 A schematic structural diagram of an embodiment of an acoustic measurement device provided by the present invention;

[0026] Figure 5 for Figure 1 Partial structural diagram of the measurement module;

[0027] Figure 6 for Figure 5 Structural schematic diagram of the connection structure;

[0028] Figure 7 for Figure 6 Exploded diagram of the connection structure.

[0029] Description of Figure Numbers:

[0030] 100. Acoustic measurement device; 1. Measuring module; 11. Bracket; 111. Connecting column; 12. Microphone; 2. Connecting structure; 21. Connecting body; 211. Mounting part; a. First limiting hole; c. Strip hole; 22. Fixing member; 221. Arc-shaped fixing part; 222. Clamping arm; 23. Rotating shaft; 24. Resetting member; 25. Screw-on member; 26. Locking nut; 3. Locking structure; 30. Locking assembly; 31. Limiting part; 32. Matching part; b. Second limiting hole; 4. Limiting structure; 41. Limiting pin;

[0031] 200. Installation structure.

[0032] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] In the field of acoustic experiments, microphone array detection is a common method for evaluating the characteristics of non-steady-state sound sources. Especially when studying high-frequency sound fields, a high-density microphone array is essential for accurately reconstructing the sound field. However, since microphones themselves are precision devices that are sensitive to environmental conditions (such as temperature and humidity), they usually need to be stored in dedicated protective devices to maintain their performance.

[0037] Therefore, before each acoustic experiment, researchers must reassemble the microphone array and calibrate it to ensure the accuracy and reliability of data collection. This process is not only time-consuming and labor-intensive, but also poses a challenge to experimental efficiency. In addition, the position layout of the microphone has a direct impact on its detection results. Unfortunately, once the fixed bracket system currently used is installed, it is difficult to adjust the position of a single microphone, which limits the study of the effects of different position layouts.

[0038] The present invention proposes an acoustic measurement device 100, which aims to provide an acoustic measurement device that can quickly and easily adjust the positions of each unit in a microphone array while simplifying the assembly and calibration processes.

[0039] See also Figures 1 to 6In one embodiment of the present invention, the acoustic measurement device 100 includes a plurality of measurement modules 1 and a plurality of connection structures 2, each of the measurement modules 1 includes a bracket 11 and a microphone 12 mounted on the bracket 11, and the plurality of brackets 11 are used to be arranged at intervals along the circumference of the device to be detected; each of the connection structures 2 includes a connection body 21 and two fixing members 22, the connection body 21 has two ends arranged opposite to each other in a first direction, the two fixing members 22 are respectively arranged at the two ends of the connection body 21, the two fixing members 22 are used to fix two adjacent brackets 11, and at least one of the fixing members 22 is rotatably mounted on the connection body 21 around a rotation axis 23 extending in a second direction, so that the angle formed between the two adjacent brackets 11 is adjustable.

[0040] See also Figures 1 to 4 Each of the measurement modules 1 includes a bracket 11 and a microphone 12 mounted on the bracket 11 through a mounting structure 200, and the multiple measurement modules 1 are arranged at intervals along the circumference of the device to be tested, that is, the multiple microphones 12 mounted on the bracket 11 surround the device to be tested, ensuring that sound data is captured from multiple angles.

[0041] See also Figure 5 and Figure 6 In order to connect the measurement modules 1 together, they are connected and fixed by the connection structure 2. Each connection structure 2 includes the connection body 21 and the two fixing members 22. The connection body 21 has two ends, which are arranged opposite to each other in the first direction, and the two fixing members 22 are respectively located at the two ends.

[0042] “At least one of the fixing members 22 is rotatably mounted on the connecting body 21 around the rotation axis 23 extending in the second direction”, that is, one of the fixing members 22 can be rotatably mounted on the connecting body 21 around the rotation axis 23 extending in the second direction; or both of the fixing members 22 can be rotatably mounted on the connecting body 21 around the rotation axis 23 extending in the second direction. Thus, the angle between the two adjacent brackets 11 can be adjusted as needed, thereby changing the relative position and orientation of the microphone 12.

[0043] It should be noted that if more dense data points or larger area coverage is required, more measurement modules 1 can be simply added; conversely, unnecessary modules can be reduced to simplify the system. Such a configuration greatly improves the application range and adaptability of the acoustic measurement device 100.

[0044] Since at least one of the fixing members 22 in the connection structure 2 can rotate around the rotation axis 23, the operator can flexibly adjust the angle between adjacent measurement modules 1 according to specific conditions on site. The position of the microphone 12 relative to the sound source can be flexibly adjusted, which helps to improve the measurement accuracy.

[0045] In addition, by adjusting the angle between the brackets 11, it is possible to adapt to specific geometric shapes or complex surface contours, thereby ensuring the best sound collection effect. In addition, the position of each measurement module 1 can be adjusted quickly and accurately to reduce the time required for reconfiguration. Accurate positioning ensures that high-quality data can be obtained for each measurement, reducing the possibility of repeated experiments.

[0046] In the technical solution of the present invention, the acoustic measurement device 100 includes a plurality of measurement modules 1 and a connection structure 2 for connecting two adjacent brackets 11 of the measurement modules 1, the plurality of brackets 11 are arranged at intervals along the circumference of the device to be detected, each bracket 11 is mounted with a microphone 12 for acoustic detection, and the two ends of the connection body 21 that are oppositely arranged in the first direction are respectively provided with a fixing member 22, the two fixing members 22 are used to fix the two adjacent brackets 11, and at least one of the fixing members 22 is arranged to be rotatably mounted on the connection body 21 around a rotation axis 23 that can extend in the second direction, so that the angle formed between the two adjacent brackets 11 is adjustable, and the number of the detection modules, the arrangement angle and the position of each measurement module 1 can be flexibly adjusted according to the measurement requirements, so as to provide an acoustic measurement device 100 that can quickly and easily adjust the position of each unit in the microphone 12 array and simplify the assembly and calibration process.

[0047] For further information, see Figure 6 and Figure 7 In this embodiment, the connection structure 2 also includes a locking structure 3 arranged between the fixing member 22 and the connection body 21, and the locking structure 3 has a locking state that limits the rotation of the fixing member 22 relative to the connection body 21, and an unlocking state that releases the rotation restriction of the fixing member 22.

[0048] It is understandable that when the locking structure 3 is in the locking state, the rotation of the fixing member 22 relative to the connecting body 21 is restricted. In this way, after the operator has adjusted the angle between two adjacent brackets 11, the locking structure 3 ensures that the angle of each measuring module 1 will not change due to external vibration or other factors during the actual measurement process.

[0049] When the locking structure 3 is in the unlocked state, the restriction on the rotation of the fixing member 22 is released, so that the operator can freely adjust the position of the fixing member 22, thereby changing the angle between two adjacent brackets 11 to adapt to different measurement requirements or equipment shapes.

[0050] Thus, by setting the locking structure 3, after the angle adjustment of the measuring module 1 is completed, the locking structure 3 can ensure that all components remain in the set position, thereby ensuring the consistency and accuracy of the measurement results. In addition, in the locked state, the position displacement of the measuring module 1 caused by external interference (such as vibration during handling and transportation) can be effectively prevented, ensuring that the device can maintain stable performance in different environments.

[0051] Specifically, see Figure 6 and Figure 7 In a specific embodiment, the locking structure 3 includes two locking components 30, one of which has a first locking state for limiting the rotation of the fixing member 22 relative to the connecting body 21 around a first clockwise direction, and a first unlocking state for releasing the rotation restriction of the fixing member 22, and the other locking component 30 has a second locking state for limiting the rotation of the fixing member 22 relative to the connecting body 21 around a second clockwise direction, and a second unlocking state for releasing the rotation restriction of the fixing member 22.

[0052] It should be noted that the first clockwise direction can be counterclockwise or clockwise, and the second clockwise direction can be counterclockwise or clockwise. In this embodiment, when the first clockwise direction is clockwise, the second clockwise direction is counterclockwise; when the first clockwise direction is counterclockwise, the second clockwise direction is clockwise.

[0053] It can be understood that if the first locking assembly 30 limits the rotation of the fixing member 22 in the clockwise direction relative to the connecting body 21, when the fixing member 22 needs to be adjusted in the clockwise direction, the first locking assembly 30 can be switched to the first unlocking state, thereby releasing the rotation restriction on the fixing member 22 in the clockwise direction.

[0054] If the second locking assembly 30 limits the counterclockwise rotation of the fixing member 22 relative to the connecting body 21 , if the counterclockwise position needs to be adjusted, free rotation can be achieved by switching the second locking assembly 30 to the second unlocking state.

[0055] That is to say, if the fixing member 22 rotates clockwise relative to the connecting body 21, the angle formed between the two adjacent measuring modules 1 gradually increases; if the fixing member 22 rotates counterclockwise relative to the connecting body 21, the angle formed between the two adjacent measuring modules 1 gradually decreases; when it is necessary to increase the angle formed between the two adjacent measuring modules 1, it is necessary to switch the first locking assembly 30 from the first locking state to the first unlocking state; when it is necessary to decrease the angle formed between the two adjacent measuring modules 1, it is necessary to switch the second locking assembly 30 from the second locking state to the second unlocking state.

[0056] By individually controlling the two locking assemblies 30, the angle formed between two adjacent measuring modules 1 can be adjusted to increase or decrease. The operator can selectively release a restriction in a clockwise direction to perform local adjustments without completely unlocking the entire system, and flexibly lock and unlock the fixing member 22 in one direction or two directions to ensure that each measurement can achieve optimal accuracy and reliability.

[0057] Specifically, see Figure 6 and Figure 7 In this embodiment, the connection structure 2 also includes a rotating shaft 23, which is rotatably installed on the connection body 21 around the second direction, and the fixing member 22 is connected to the circumferential side of the rotating shaft 23; the locking structure 3 also includes two limiting portions 31 and two matching portions 32, the two limiting portions 31 are arranged at intervals in the second direction and are coaxially connected to the rotating shaft 23; the two matching portions 32 are movably installed on the connection body 21, and each matching portion 32 has a locking position close to the corresponding limiting portion 31 and an unlocking position away from the limiting portion 31. In the locking position, one matching portion 32 is used to limit the corresponding limiting portion 31 to rotate around the first clockwise direction, and the other matching portion 32 is used to limit the corresponding limiting portion 31 to rotate around the second clockwise direction.

[0058] It should be noted that the second direction is set to be a direction substantially perpendicular to the first direction. If the first direction is set to be horizontal, then the second direction is set to be vertical.

[0059] The rotating shaft 23 is rotatably mounted on the connecting body 21 around the second direction. The fixing member 22 is connected to the peripheral side of the rotating shaft 23 and rotates together with the rotating shaft 23 to adjust the angle between two adjacent brackets 11 through the rotating shaft 23 .

[0060] When one of the matching parts 32 moves to a position close to the corresponding limiting part 31, it will limit the limiting part 31 and the rotating shaft 23 coaxially connected thereto from rotating in the clockwise direction; the other matching part 32 is used to limit the counterclockwise rotation. At this time, the fixing member 22 is locked at the set angle position and can no longer rotate. When the matching part 32 moves to a position away from the limiting part 31, it releases the restriction on the limiting part 31 and allows the rotating shaft 23 to rotate freely. The operator can readjust the angle of the fixing member 22.

[0061] The steps of adjusting the angle between two adjacent measuring modules 1 are as follows:

[0062] The two mating parts 32 are both in the unlocked position, at which time the rotating shaft 23 can rotate freely, and the operator can adjust the angle of the fixing member 22. The operator adjusts the angle between two adjacent brackets 11 by rotating the rotating shaft 23 until the desired measuring position is reached. Once the adjustment is completed, the operator pushes the corresponding mating part 32 to the locked position so that it contacts and restricts the corresponding limiting part 31. In this way, the position of the rotating shaft 23 is fixed to ensure that the fixing member 22 will not rotate accidentally due to external factors.

[0063] If the angle needs to be adjusted again, the operator only needs to move the matching portion 32 back to the unlocking position to release the rotating shaft 23 and allow further adjustment.

[0064] Specifically, see Figure 7 In one embodiment, the limiting portion 31 includes a ratchet, and the matching portion 32 includes a pawl; the teeth of the two ratchets are bent in opposite directions.

[0065] Each of the limiting portions 31 includes a ratchet wheel, which is a disc or gear with teeth, and a plurality of teeth are arranged along the circumferential direction.

[0066] "The teeth of the two ratchets are arranged to be bent in opposite directions", that is, the teeth of one ratchets are inclined in a clockwise direction, while the teeth of the other ratchets are inclined in a counterclockwise direction, so that each ratchets can only be restricted to rotate in a specific direction.

[0067] Each of the mating portions 32 includes a pawl, which is configured as a small arm or pin with an inclined surface and can be embedded between the teeth of the ratchet wheel.

[0068] When the pawl moves to a position close to the ratchet (i.e., the locked position), it will be embedded between the teeth of the ratchet, preventing the ratchet from rotating in a certain direction; when the pawl moves away (i.e., the unlocked position), the ratchet can rotate freely.

[0069] Unlocking and locking are achieved by providing relatively simple mechanical components such as the ratchet and the pawl, which is easy to inspect, replace or repair, thereby simplifying the maintenance work of the acoustic measurement device 100 .

[0070] For further information, see Figure 7 In this embodiment, a limiting structure 4 and a reset member 24 are further provided between the connecting body 21 and the matching portion 32, wherein the limiting structure 4 is used to limit the matching portion 32 to the unlocking position, and the reset member 24 is used to reset the matching portion 32 from the locking position to the locking position.

[0071] The limiting structure 4 fixes the matching portion 32 at the unlocking position to ensure that it will not be accidentally displaced due to external vibration or slight impact, so as to ensure that the measuring device can also maintain its set angle and position.

[0072] The reset member 24 can be configured as a spring or other elastic element, and is used to automatically push the matching portion 32 from the unlocked position back to the locked position after the limiting structure 4 is unlocked. When the operator wants to readjust the angle, he only needs to push the matching portion 32 back to the locked position, and then cooperate with the limiting structure 4 to limit the matching portion 32 to the unlocked position, thereby simplifying the operation process.

[0073] By setting the reset member 24, the operation steps can be greatly simplified. The operator only needs to release the limit structure 4, and the subsequent reset and locking process is automatically completed by the reset member 24, saving time and energy. The automatic reset function allows the operator to adjust the angle of the measuring module 1 more efficiently, while reducing the possibility of misoperation.

[0074] Specifically, see Figure 6 and Figure 7 In this embodiment, the connecting body 21 has two mounting portions 211 which are opposite to each other and spaced apart in the second direction, and a first limiting hole a is provided on the mounting portion 211; a second limiting hole b is provided on the matching portion 32; the limiting structure 4 includes a limiting pin 41, and the limiting pin 41 is passed through the first limiting hole a and the second limiting hole b to limit the matching portion 32 to the unlocking position.

[0075] It can be understood that when the limit pin 41 is inserted into the first limit hole a and the second limit hole b, since the limit pin 41 is restricted by the two limit holes, the matching part 32 is in the unlocking position. When the operator needs to switch the matching part 32 from the locking position to the unlocking position, it is only necessary to pull out the limit pin 41.

[0076] When the matching portion 32 is in the unlocking position, the reset member 24 is in a compressed state. When the operator needs to switch the matching portion 32 from the unlocking position to the locking position, the limit pin 41 needs to be pulled out, and the matching portion 31 is not restricted. Under the elastic force of the reset member 24, the matching portion 32 is embedded between the teeth of the ratchet to prevent the ratchet from rotating.

[0077] When the matching portion 32 needs to be switched from the locked position to the unlocked position, the matching portion 32 can be moved to the unlocked position by applying an external force to overcome the elastic force of the reset member, so that the pawl is disengaged from the ratchet wheel, allowing the ratchet wheel to rotate, and then the limiting pin 41 is inserted into the first limiting hole a on the mounting portion 211, and ensured to pass through the second limiting hole b on the matching portion 32 at the same time. The limiting pin 41 plays a role of mechanical locking to prevent the matching portion 32 from moving away from the locked position.

[0078] The matching portion 32 is placed in the unlocking position by the limiting pin 41 passing through the two limiting holes. The operator can complete the unlocking and locking operations by simply inserting or pulling out the limiting pin 41. The operation is simple and the structure is intuitive.

[0079] For further information, see Figure 7 In this embodiment, the mounting portion 211 is further provided with a strip hole c, and the matching portion 32 is slidably disposed in the strip hole c along the length direction of the strip hole c. During the sliding stroke of the matching portion 32, the locking position and the unlocking position can be reached.

[0080] The mounting portion 211 is also provided with a strip hole c, which provides physical support and constraint for the matching portion 32, so that the matching portion 32 can slide smoothly along the strip hole c without unnecessary shaking or rotation, so as to ensure that the matching portion 32 can maintain a stable state at different positions.

[0081] The strip hole c not only provides a sliding path for the matching portion 32, but also plays a guiding role, ensuring that the matching portion 32 can only move along a predetermined direction (i.e., the length direction of the strip hole c), thereby ensuring the linear movement of the matching portion 32 during operation and avoiding deviation or jamming.

[0082] The matching portion 32 can slide in the strip-shaped hole c and reach the locking position and the unlocking position during its sliding stroke.

[0083] When the matching portion 32 slides to one end of the strip-shaped hole c, the matching portion 32 is embedded between the teeth of the ratchet wheel to prevent the rotating shaft 23 from rotating.

[0084] When the engaging portion 32 slides to the other end of the strip-shaped hole c, the engaging portion 32 is disengaged from between the teeth of the ratchet wheel, allowing the rotating shaft 23 to rotate freely.

[0085] In the actual adjustment process, the operator manually or through other mechanical devices pushes the matching portion 32 to slide along the strip hole c, so that the pawl disengages from the ratchet wheel, allowing the ratchet wheel to rotate until it reaches the unlocking position. Then, the limiting pin 41 is used to pass through the first limiting hole a and the second limiting hole b to fix the matching portion 32 in the unlocking position.

[0086] By providing the strip hole c, a clear path is provided for the sliding of the matching portion 32, ensuring that each locking can achieve the expected effect. Due to the guiding effect of the strip hole c, the matching portion 32 will not deviate during the sliding process, and can maintain stable sliding performance even in a vibration or impact environment. The operator only needs to push or pull the matching portion 32 along the strip hole c to quickly complete the locking and unlocking operations through simple actions.

[0087] Specifically, see Figure 6 and Figure 7 In this embodiment, the fixing member 22 includes an arc-shaped fixing portion 221 arranged on the periphery of the connecting column 111 of the bracket 11, and the two ends of the arc-shaped fixing portion 221 in the circumferential direction respectively extend outward with clamping arms 222, and the two clamping arms 222 are movably arranged in directions of approaching and moving away from each other, so that the distance between the two ends of the arc-shaped fixing portion 221 is adjustable.

[0088] It should be noted that the bracket 11 is composed of a plurality of connecting columns 111, and the arc-shaped fixing portion 221 is arranged around the periphery of the connecting columns 111 to form an arc-shaped structure. Its main function is to provide a stable platform for installing and fixing other components.

[0089] Before the fixing member 22 is assembled with the connecting post 111 , the distance between the clamping arms 222 is at the maximum, and the arc-shaped fixing portion 221 can be freely sleeved on the connecting post 111 .

[0090] When the clamp arms 222 are brought closer to each other, the distance between the two ends of the arc-shaped fixing portion 221 is reduced, thereby tightly wrapping the connecting column 111 to ensure that the fixing member 22 is firmly installed on the bracket 11 .

[0091] On the contrary, when the clamping arms 222 move away from each other, the distance between the two ends of the arc-shaped fixing portion 221 increases, so that the fixing member 22 can be easily removed from the connecting column 111 or readjusted.

[0092] With such arrangement, the distance between the two ends of the fixing member 22 can be adjusted, so that the operator can quickly and conveniently install or remove each measuring module 1, and can adapt to different models of the bracket 11 and the connecting column 111, thereby improving the compatibility and practicality of the equipment.

[0093] Specifically, in this embodiment, the two clamp arms 222 are both provided with connection holes, and the connection structure 2 further includes a screw connection 25 passing through the two connection holes, and a locking nut 26 sleeved on the periphery of the screw connection 25 .

[0094] Each of the clamping arms 222 is provided with a connecting hole for accommodating the screw connection member 25 , so that two clamping arms 222 can be connected via the screw connection member 25 .

[0095] It can be understood that the position and size of the connecting hole ensure that the screw member 25 can pass through smoothly and allow the clamping arm 222 to move within a certain range.

[0096] The screw connection member 25 can be, for example, a bolt or a screw. The screw connection member 25 not only connects the two clamp arms 222 together, but also can adjust the distance between the clamp arms 222 .

[0097] The operator can change the extension length of the screw connector 25 by rotating it, thereby adjusting the distance between the clamp arms 222. When the screw connector 25 is tightened, the clamp arms 222 are pulled closer; when the screw connector 25 is loosened, the clamp arms 222 can move away from each other.

[0098] The locking nut 26 is sleeved on the outer periphery of the screw connection 25 and is located outside the clamp arm 222. The position of the clamp arm 222 is fixed by tightening the locking nut 26 to prevent movement due to external force.

[0099] Through the combination of the screw connector 25 and the locking nut 26, the operator can accurately control the spacing between the clamp arms 222, thereby ensuring that the arc-shaped fixing portion 221 tightly wraps the connecting column 111, providing a stable fixing effect. The operator only needs to use simple tools (such as a screwdriver or a wrench) to complete the entire adjustment and locking process, which simplifies the operation steps and improves work efficiency. The spacing between the clamp arms 222 can be flexibly adjusted according to the specific application scenario requirements, and the stability of the installation can be ensured by the locking nut 26, ensuring that each measurement can achieve the best effect.

[0100] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An acoustic measurement device, characterized in that: include: A plurality of measurement modules, each of which comprises a bracket and a microphone mounted on the bracket, and the plurality of brackets are arranged at intervals along the circumference of the device to be detected; as well as, A plurality of connection structures, each of the connection structures comprises a connection body and two fixing members, the connection body having two ends arranged opposite to each other in a first direction, the two fixing members being arranged at the two ends of the connection body, the two fixing members being used to fix two adjacent brackets, at least one of the fixing members being rotatably mounted on the connection body around a rotation axis extending in a second direction, so that the angle formed between the two adjacent brackets is adjustable.

2. The acoustic measurement device according to claim 1, characterized in that The connection structure further includes a locking structure disposed between the fixing member and the connection body, wherein the locking structure has a locking state for restricting the fixing member from rotating relative to the connection body, and an unlocking state for releasing the restriction on the rotation of the fixing member.

3. The acoustic measurement device according to claim 2, characterized in that The locking structure includes two locking components, one of which has a first locking state that limits the rotation of the fixing member relative to the connecting body around a first clockwise direction, and a first unlocking state that releases the rotation restriction of the fixing member, and the other locking component has a second locking state that limits the rotation of the fixing member relative to the connecting body around a second clockwise direction, and a second unlocking state that releases the rotation restriction of the fixing member.

4. The acoustic measurement device according to claim 3, characterized in that The connection structure further includes a rotating shaft, the rotating shaft is rotatably mounted on the connection body around the second direction, and the fixing member is connected to the peripheral side of the rotating shaft; The locking structure further comprises: two limiting parts, arranged at intervals in the second direction and coaxially connected to the rotating shaft; and, Two matching parts can be movably installed on the connecting body, and each matching part has a locking position close to the corresponding limiting part and an unlocking position away from the limiting part. In the locking position, one matching part is used to limit the corresponding limiting part to rotate around the first clockwise direction, and the other matching part is used to limit the corresponding limiting part to rotate around the second clockwise direction.

5. The acoustic measurement device according to claim 4, characterized in that The limiting portion includes a ratchet, and the matching portion includes a pawl; The teeth of the two ratchets are bent and arranged in opposite rotation directions.

6. The acoustic measurement device according to claim 4, characterized in that A limiting structure and a reset member are further provided between the connecting body and the matching portion, wherein the limiting structure is used to limit the matching portion to the unlocking position, and the reset member is used to reset the matching portion from the unlocking position to the locking position.

7. The acoustic measurement device according to claim 6, characterized in that The connecting body has two mounting parts which are arranged opposite to each other and spaced apart in the second direction, and the mounting parts are provided with first limiting holes; The matching portion is provided with a second limiting hole; The limiting structure includes a limiting pin, and the limiting pin is penetrated through the first limiting hole and the second limiting hole to limit the matching part to the unlocking position.

8. The acoustic measurement device according to claim 7, characterized in that: The mounting portion is also provided with a strip-shaped hole, and the matching portion is slidably arranged in the strip-shaped hole along the length direction of the strip-shaped hole. During the sliding stroke of the matching portion, the locking position and the unlocking position can be reached.

9. The acoustic measurement device according to claim 1, characterized in that: The fixing member includes an arc-shaped fixing portion arranged on the periphery of the connecting column of the bracket, and the two ends of the arc-shaped fixing portion in the circumferential direction respectively extend clamping arms outward, and the two clamping arms are movably arranged in directions of approaching and moving away from each other, so that the distance between the two ends of the arc-shaped fixing portion is adjustable.

10. The acoustic measurement device according to claim 9, characterized in that The two clamp arms are both provided with connection holes, and the connection structure further comprises a screw connection piece passing through the two connection holes, and a locking nut sleeved on the periphery of the screw connection piece.

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