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 support and a plurality of detection assemblies, and the support comprises a plurality of mounting columns which are sequentially arranged at intervals in the width direction of the support; the multiple detection assemblies are arranged in the length direction of the mounting columns and / or the width direction of the support at intervals, each detection assembly comprises a mounting structure and a microphone detachably mounted on the mounting structure, the mounting structures are detachably mounted on the corresponding mounting columns, the mounting structures are mutually independent, and the microphones are detachably mounted on the mounting structures. The arrangement positions and the number of the microphones can be conveniently adjusted according to the detection requirement of a sound source, the positions and the number of the mounting structures can be flexibly adjusted according to the number and the positions of the microphones required by measurement, the influence of the mounting structures on a sound field is reduced as much as possible, and the problems that the arrangement array of the microphones of a current acoustic detection device is single and the sound field is poor are solved. When different objects to be detected are detected, the detection accuracy is not enough, and the efficiency is low.

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. Once the fixed bracket system currently used is installed, the position of a single microphone is determined, 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 propose an acoustic measurement device, which aims to solve the problem that the microphone arrangement array of the current acoustic detection device is single, and the detection accuracy is insufficient and the efficiency is low when detecting different objects to be detected.

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

[0006] The bracket includes a plurality of mounting posts arranged sequentially and spaced apart in a width direction thereof; and

[0007] A plurality of detection components are arranged at intervals in the length direction of the mounting column and / or the width direction of the bracket, each of the detection components includes a mounting structure and a microphone detachably mounted on the mounting structure, and the mounting structure is detachably mounted on the corresponding mounting column.

[0008] In one embodiment, the mounting structure comprises:

[0009] A mounting body, wherein the mounting body has a first mounting hole extending in a first direction along the thickness of the bracket, and the mounting body is further provided with a slide groove extending in a second direction along the width of the bracket, and the slide groove is connected to the first mounting hole;

[0010] a sliding portion, the sliding portion having a second mounting hole extending along the first direction, the sliding portion being slidably disposed in the sliding groove along the second direction, the second mounting hole being able to align with the first mounting hole during a sliding stroke of the sliding portion, so that the microphone can be mounted in the first mounting hole and the second mounting hole; and

[0011] An elastic member is disposed between the mounting portion and the sliding portion so that the sliding portion can be elastically retracted and moved along the second direction.

[0012] In one embodiment, the mounting body includes a mounting portion, and a first connecting portion and a second connecting portion provided at the same end of the mounting portion in the first direction, the first connecting portion and the second connecting portion are spaced apart and arranged opposite to each other in the second direction, the first connecting portion is provided with a first slot segment extending along the second direction, the second connecting portion is provided with a second slot segment extending along the second direction, and the first slot segment and the second slot segment form the slide groove;

[0013] The mounting portion is provided with the first mounting hole, and the first mounting hole is located between the first connecting portion and the second connecting portion in the second direction.

[0014] In one embodiment, the mounting portion is provided with a first positioning hole connected to the slide groove, and the sliding portion is provided with a second positioning hole corresponding to the first positioning hole;

[0015] The mounting structure further includes a positioning member, and the positioning member is inserted into the first positioning hole and the second positioning hole to position the sliding portion on the mounting portion.

[0016] In one embodiment, the mounting portion is provided with a guide groove with a notch facing the sliding portion;

[0017] The elastic member comprises a spring, one end of which is mounted on the guide groove, and the other end of which is connected to the sliding portion.

[0018] In one embodiment, the mounting portion further includes a first mounting portion and a second mounting portion spaced apart in the first direction;

[0019] The mounting structure further includes a fixing structure for fixing the first mounting portion and the second mounting portion, so that the mounting column is clamped between the first mounting portion and the second mounting portion.

[0020] In one embodiment, a limiting groove is recessed on one side of the first mounting portion and the second mounting portion that are close to each other, and the two limiting grooves are arranged opposite to each other to define an installation gap for installing the mounting column.

[0021] In one embodiment, a connecting portion is protruded from one side of the first mounting portion toward the second mounting portion, the connecting portion is provided with an external thread, and the second mounting portion is provided with a first connecting hole for the connecting portion to pass through;

[0022] The fixing structure further includes a locking nut disposed on a side of the second mounting portion away from the first mounting portion, and the locking nut is threadedly connected to the connecting portion.

[0023] In one embodiment, the first mounting portion is provided with the first mounting hole, and the first mounting hole is provided through the connecting portion.

[0024] In one embodiment, the mounting portion is provided with a second connection hole, and the second connection portion is provided with a third connection hole corresponding to the second connection hole;

[0025] The mounting structure further includes a connecting member, which is inserted through the second connecting hole and the third connecting hole to fixedly connect the mounting portion with the second connecting portion.

[0026] In the technical solution of the present invention, the bracket includes a plurality of mounting posts arranged in sequence and at intervals in the width direction thereof; a plurality of detection components are arranged at intervals in the length direction of the mounting posts and / or the width direction of the bracket, each detection component includes a mounting structure, and a microphone detachably mounted on the mounting structure, the mounting structure is detachably mounted on the corresponding mounting post, each mounting structure is independent of each other, the arrangement position and number of the microphones can be conveniently adjusted according to the detection needs of the sound source, the position and number of the mounting structures can be flexibly adjusted according to the number and position of the microphones required for measurement, the influence of the mounting structure on the sound field is minimized as much as possible, which is conducive to ensuring the accuracy of the detection results, so as to solve the problem that the microphone arrangement formation of the current acoustic detection device is single, the detection accuracy is insufficient, and the efficiency is low when detecting different objects to be detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 A schematic structural diagram of an embodiment of an acoustic measurement device provided by the present invention;

[0029] Figure 2 for Figure 1 Schematic diagram of the installation structure;

[0030] Figure 3 for Figure 1 A schematic diagram of another perspective of the installation structure;

[0031] Figure 4 for Figure 2 Exploded schematic diagram of the installation structure;

[0032] Figure 5 and Figure 6 A schematic structural diagram of the acoustic measurement device provided by the present invention for detecting an object to be detected.

[0033] Description of Figure Numbers:

[0034] 100. Acoustic measurement device; 1. Bracket; 11. Mounting column; 2. Detection assembly; 20. Mounting structure; 21. Mounting body; a. First mounting hole; b. Slide groove; 211. Mounting part; 211a. Second connecting hole; 212. First connecting part; b1. First slot section; 213. Second connecting part; b2. Second slot section; e. Guide groove; 213a. Third connecting hole; 2111. First mounting part; 2112. Second mounting part; 2112a. First connecting hole; 214. Connecting part; 22. Sliding part; c. Second mounting hole; d. First positioning hole; 23. Elastic member; 24. Positioning member; 25. Fixing structure; 251. Locking nut; 25a. Limiting groove; 26. Connecting member; 30. Microphone;

[0035] 200. Object to be tested.

[0036] 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

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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 the microphone itself is a precision device that is sensitive to environmental conditions (such as temperature and humidity), they usually need to be stored in a dedicated protective device to maintain their performance. Therefore, before each acoustic experiment, researchers must reassemble the microphone array and calibrate it to ensure the accuracy and reliability of data acquisition. 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. Once the currently used fixed bracket system is installed, the position of a single microphone is determined, which limits the study of the effects of different position layouts.

[0041] The present invention proposes an acoustic measurement device, aiming to solve the problem that the microphone arrangement array of the current acoustic detection device is single, and the detection accuracy is insufficient and the efficiency is low when detecting different objects to be detected.

[0042] See also Figures 1 to 4 In one embodiment of the present invention, the acoustic measurement device includes a bracket and a plurality of detection components, wherein the bracket includes a plurality of mounting posts arranged in sequence and at intervals in the width direction thereof; the plurality of detection components are arranged at intervals in the length direction of the mounting posts and / or in the width direction of the bracket, each of the detection components includes a mounting structure and a microphone detachably mounted on the mounting structure, and the mounting structure is detachably mounted on the corresponding mounting post.

[0043] See also Figure 1 and Figure 5The bracket 1 has a plurality of mounting posts 11, and the plurality of mounting posts 11 are sequentially arranged at intervals along the width direction of the bracket 1. It is understandable that the bracket 1 can be arranged in a rectangular shape, and a plurality of the brackets 1 are arranged, and the plurality of the brackets 1 are arranged along the circumference of the object to be detected 200; the bracket 1 can also be arranged in an annular cylindrical shape, and is arranged around the circumference of the object to be detected 200. The present invention does not limit the specific form of the bracket 1, and the specific form can be determined according to actual conditions.

[0044] In order to facilitate the arrangement of the microphones 30 in an array, the plurality of mounting posts 11 of the bracket 1 may be arranged in parallel and maintain a certain distance in the lateral direction (width direction).

[0045] The microphone 30 is a component for capturing sound signals, and the mounting structure 20 is used to fix the microphone 30 .

[0046] The multiple detection components 2 can be distributed in two dimensions: along the length direction of the mounting posts 11 (ie, perpendicular to the width of the bracket 1 ); and along the width direction of the bracket 1 (ie, parallel to the line connecting the mounting posts 11 ).

[0047] The connection between the detection component 2 and its mounting structure 20 and the mounting column 11 is detachable. This allows the position or quantity of the detection component 2 to be adjusted according to specific measurement requirements, and is also convenient for maintenance and replacement. The operator can flexibly adjust the position of each detection component 2 to adapt to objects of different shapes and sizes to be tested, as well as different sound orientations, to ensure that all necessary monitoring points are covered, and to avoid setting too many detection components 2 in unnecessary places, thereby reducing the impact on the original sound field.

[0048] It should be noted that when acoustic detection is performed in an array form, multiple microphones 30 need to be arranged at corresponding monitoring points for detection. For different shapes and sound orientations of the objects 200 to be detected, the number of microphones 30 arranged in the array in different position areas may be different. In order to avoid missing monitoring points, it may be necessary to arrange as many microphones 30 as possible. However, if too many microphones 30 are set in areas where they are not necessary, and the mounting structure 20 for installing the microphones 30, it will affect the sound field to be detected itself. Therefore, it is necessary to ensure that all necessary monitoring points can be effectively covered, while avoiding unnecessary resource consumption and minimizing the impact on the original sound field.

[0049] In the technical solution of the present invention, the bracket 1 includes a plurality of mounting posts 11 arranged in sequence in the width direction thereof; a plurality of detection components 2 are arranged in intervals in the length direction of the mounting posts 11 and / or in the width direction of the bracket 1, each detection component 2 includes a mounting structure 20, and a microphone 30 detachably mounted on the mounting structure 20, the mounting structure 20 is detachably mounted on the corresponding mounting post 11, and each mounting structure 20 is independent of each other, and the arrangement position and number of the microphones 30 can be conveniently adjusted according to the detection needs of the sound source, and the position and number of the mounting structures 20 can be flexibly adjusted according to the number and position of the microphones 30 required for measurement, so as to minimize the influence of the mounting structure 20 on the sound field, which is beneficial to ensure the accuracy of the detection results, so as to solve the problem that the microphone 30 of the current acoustic detection device has a single arrangement formation, and the detection accuracy is insufficient and the efficiency is low when detecting different objects 200 to be detected.

[0050] Specifically, see Figures 2 to 4 In this embodiment, the mounting structure 20 includes a mounting body 21, a sliding portion 22 and an elastic member 23, the mounting body 21 having a first mounting hole a extending in a first direction along the thickness of the bracket 1, and the mounting body 21 is also provided with a slide groove b extending in a second direction along the width of the bracket 1, and the slide groove b is connected to the first mounting hole a; the sliding portion 22 has a second mounting hole c extending in the first direction, the sliding portion 22 is slidably arranged in the slide groove b along the second direction, and the second mounting hole c can be aligned with the first mounting hole a during the sliding stroke of the sliding portion 22, so that the microphone 30 can be installed in the first mounting hole a and the second mounting hole c; the elastic member 23 is arranged between the mounting portion 211 and the sliding portion 22, so that the sliding portion 22 can be elastically retracted and movable along the second direction.

[0051] The mounting body 21 is provided with the first mounting hole a, which is a hole extending along the thickness direction of the bracket 1 (i.e., from the front to the back). The first mounting hole a is used to partially fix the microphone 30 to ensure that the microphone 30 can be correctly installed in a direction perpendicular to the surface of the bracket 1.

[0052] The slide groove b is located on the mounting body 21 and extends along the width direction (ie, the transverse direction) of the bracket 1. The slide groove b is connected to the first mounting hole a so that the sliding part 22 moves therein.

[0053] The sliding portion 22 is provided with the second mounting hole c extending along the thickness direction of the bracket 1 . When the sliding portion 22 moves along the slide groove b, the second mounting hole c can be aligned with the first mounting hole a on the mounting body 21 .

[0054] By placing the sliding part 22 in the slide groove b and moving the sliding part 22 along the slide groove b as needed, the second mounting hole c can be aligned with the first mounting hole a. When the two mounting holes are aligned, the microphone 30 can be installed in the two mounting holes, and the sliding part 22 completes the positioning and fixing of the microphone 30.

[0055] The elastic member 23 is disposed between the mounting body 21 and the sliding portion 22, so that the sliding portion 22 can be elastically extended and retracted along the width direction of the bracket 1. When an external force is applied to move the sliding portion 22, the elastic member 23 will be compressed or stretched; when the external force is removed, the elastic member 23 will return to its original state and push the sliding portion 22 back to its initial position.

[0056] When the microphone 30 needs to be installed, the operator moves the sliding part 22 along the sliding groove b until the second mounting hole c is aligned with the first mounting hole a. At this time, the microphone 30 can be installed through these two holes. Due to the elastic force provided by the elastic member 23, after the microphone 30 is inserted into the first mounting hole a and the second mounting hole c, the pressure is released, and the restoring force of the elastic member 23 will cause the sliding part 22 to rebound, thereby generating a shear force on the microphone 30 through the contact surface between the sliding part 22 and the mounting body 21, ensuring that the microphone 30 is firmly clamped between the sliding part 22 and the mounting body 21 to prevent it from loosening or falling off.

[0057] It should also be noted that the elastic member 23 can also play a buffering role to reduce the impact of external impact on the microphone 30.

[0058] If the position of the microphone 30 needs to be adjusted, it is only necessary to overcome the resistance of the elastic member 23 , re-move the sliding portion 22 to a new desired position, and then use the restoring force of the elastic member 23 to clamp the microphone 30 again.

[0059] With such a configuration, the microphone 30 can be quickly installed and removed without additional tools, thereby improving operating efficiency. The shear force provided by the elastic member 23 ensures the stability of the microphone 30 after installation, so that the position of the microphone 30 can be flexibly adjusted according to actual detection requirements, while maintaining sufficient clamping force to ensure measurement accuracy.

[0060] For details, please continue to see Figures 2 to 4In this embodiment, the mounting body 21 includes a mounting portion 211, and a first connecting portion 212 and a second connecting portion 213 arranged at the same end of the mounting portion 211 in the first direction, the first connecting portion 212 and the second connecting portion 213 are spaced apart and arranged opposite to each other in the second direction, the first connecting portion 212 is provided with a first groove section b1 extending along the second direction, the second connecting portion 213 is provided with a second groove section b2 extending along the second direction, the first groove section b1 and the second groove section b2 form the slide groove b; the mounting portion 211 is provided with the first mounting hole a, and the first mounting hole a is located between the first connecting portion 212 and the second connecting portion 213 in the second direction.

[0061] The first connection portion 212 and the second connection portion 213 are arranged at the same end of the mounting portion 211 in the first direction (i.e., the thickness direction of the bracket 1), and are spaced apart and arranged opposite to each other in the second direction (i.e., the width direction of the bracket 1). It is understandable that, in order to facilitate detection and avoid affecting the sound field, the first connection portion 212 and the second connection portion 213 are arranged at one end of the mounting portion 211 away from the object to be detected 200.

[0062] The first slot segment b1 is located on the first connecting portion 212 and extends along the second direction (i.e., transversely). The second slot segment b2 is located on the second connecting portion 213 and also extends along the second direction. The slideway b is formed by the first slot segment b1 and the second slot segment b2. The first slot segment b1 and the second slot segment b2 are aligned in the second direction to form a complete slideway b.

[0063] The first mounting hole a is located between the first connecting portion 212 and the second connecting portion 213 in the second direction. The first mounting hole a is located in the middle of the slide groove b formed by two groove segments, so that the microphone 30 can be accurately positioned in the center area of ​​the mounting body 21.

[0064] By locating the first mounting hole a between the two connecting parts 214, the rigidity of the mounting structure 20 and the fixing effect of the microphone 30 are enhanced. In addition, the first connecting part 212 and / or the second connecting part 213 can be manufactured separately and then assembled, so as to facilitate manufacturing and molding, and also provide flexibility for possible future design improvements or expansions.

[0065] For further information, please refer to Figure 4In this embodiment, a first positioning hole d connected to the slide groove b is provided on the mounting portion 211, and a second positioning hole corresponding to the first positioning hole d is provided on the sliding portion 22; the mounting structure 20 also includes a positioning member 24, and the positioning member 24 is passed through the first positioning hole d and the second positioning hole to position the sliding portion 22 on the mounting portion 211.

[0066] The first positioning hole d is located on the mounting portion 211 and communicates with the slide groove b; the second positioning hole is located on the sliding portion 22 and is arranged corresponding to the first positioning hole d on the mounting portion 211. When the sliding portion 22 moves to a specified position along the slide groove b, the second positioning hole is aligned with the first positioning hole d.

[0067] The positioning member 24 may be inserted between the first positioning hole d and the second positioning hole to fix the sliding portion 22 on the mounting portion 211 to prevent the sliding portion 22 from accidentally moving.

[0068] It should be noted that the positioning member 24 may be a pin, or a mechanical fastener such as a bolt, and the specific one may be determined according to actual conditions, and the embodiments of this specification do not limit this.

[0069] If the position of the sliding portion 22 needs to be readjusted, the positioning member 24 only needs to be taken out from the first positioning hole d and the second positioning hole, and the sliding portion 22 can move freely along the sliding groove b again.

[0070] Through the cooperation of the first positioning hole d and the second positioning hole, and the use of the positioning member 24, the sliding part 22 can be accurately positioned to ensure that each installation can be repeated and consistent. The positioning member 24 provides additional fixing force, so that the sliding part 22 can remain stable during the installation process and in the working state, avoiding unnecessary movement or looseness.

[0071] For further information, please refer to Figure 4 In this embodiment, the mounting portion 211 is provided with a guide groove e with a notch facing the sliding portion 22 ; the elastic member 23 includes a spring, one end of the spring is mounted on the guide groove e, and the other end is connected to the sliding portion 22 .

[0072] The guide groove e provides an installation position for the spring and guides the sliding part 22 to move along a predetermined path, thereby ensuring that the sliding part 22 remains stable during the sliding process.

[0073] One end of the spring is mounted on the guide groove e, and the spring can be realized by welding, snapping or other fixing methods. The other end of the spring is connected to the sliding part 22 to ensure that when the sliding part 22 moves, the spring can be stretched and contracted to provide the necessary elastic force.

[0074] By installing one end of the spring to the guide groove e, the spring can be kept stable during the compression process, thereby ensuring the smooth movement trajectory of the sliding part 22 and avoiding unnecessary deviation or shaking.

[0075] For details, please continue to see Figures 2 to 4 In this embodiment, the mounting portion 211 also includes a first mounting portion 2111 and a second mounting portion 2112 spaced apart in the first direction; the mounting structure 20 also includes a fixing structure 25 for fixing the first mounting portion 2111 and the second mounting portion 2112 so that the mounting column 11 is clamped between the first mounting portion 2111 and the second mounting portion 2112.

[0076] The first mounting portion 2111 and the second mounting portion 2112 are spaced apart in the first direction. There is a certain distance between the first mounting portion 2111 and the second mounting portion 2112 to form an installation space to accommodate the mounting column 11 .

[0077] The fixing structure 25 is used to fix the first mounting portion 2111 and the second mounting portion 2112 together to ensure that the two mounting portions 211 are tightly matched, thereby firmly clamping the mounting column 11 therebetween to prevent it from loosening or falling off, thereby ensuring the stability of the mounting structure 20 and maintaining a reliable connection even under the influence of vibration or other external forces.

[0078] The installation process of fixing the mounting structure 20 to the mounting column 11 is as follows:

[0079] First, place the first mounting portion 2111 and the second mounting portion 2112 on both sides of the mounting column 11, and then use the fixing structure 25 to connect the first mounting portion 2111 and the second mounting portion 2112, so that the two parts tightly press the mounting column 11 to form a stable clamping effect.

[0080] If it is necessary to adjust the position of the mounting structure 20 or remove the mounting structure 20 , it is only necessary to release the fixing structure 25 .

[0081] Furthermore, in this embodiment, a limiting groove 25 a is recessed on one side of the first mounting portion 2111 and the second mounting portion 2112 that are close to each other, and the two limiting grooves 25 a are arranged opposite to each other to define an installation gap for installing the mounting column 11 .

[0082] The first mounting portion 2111 and the second mounting portion 2112 are each provided with the limiting groove 25a on the side facing each other. When the first mounting portion 2111 and the second mounting portion 2112 are close to each other, the two limiting grooves 25a will be aligned face to face. An accurate installation gap is formed between the two oppositely arranged limiting grooves 25a. The size and shape of the installation gap are set to match the mounting column 11, ensuring that it can be accurately placed and firmly clamped therein.

[0083] By providing the limiting groove 25a, it is ensured that the mounting column 11 is accurately placed at the predetermined position, thereby improving the installation accuracy. Since the limiting groove 25a is closely fitted with the mounting column 11, the mounting column 11 is firmly fixed in the installation gap, thereby reducing the risk of loosening due to external vibration or impact.

[0084] Specifically, see Figure 4 In this embodiment, a connecting portion 214 is protruded from one side of the first mounting portion 2111 toward the second mounting portion 2112, and an external thread is provided on the connecting portion 214. The second mounting portion 2112 is provided with a first connecting hole 2112a for the connecting portion 214 to pass through. The fixing structure 25 also includes a locking nut 251 provided on the side of the second mounting portion 2112 away from the first mounting portion 2111, and the locking nut 251 is threadedly connected to the connecting portion 214.

[0085] When the mounting structure 20 needs to be mounted on the mounting column 11, the connecting portion 214 on the first mounting portion 2111 can be aligned and inserted into the first connecting hole 2112a on the second mounting portion 2112. After ensuring that the connecting portion 214 completely passes through the first connecting hole 2112a, the locking nut 251 is screwed in from the other side of the second mounting portion 2112. The locking nut 251 is rotated to tightly engage with the external thread on the connecting portion 214, so that the first mounting portion 2111 and the second mounting portion 2112 are tightly pressed together to form a stable connection.

[0086] If disassembly or adjustment is required, the locking nut 251 only needs to be rotated in the reverse direction to unscrew it from the connecting portion 214 , so that the first mounting portion 2111 and the second mounting portion 2112 can be easily separated.

[0087] Through the combination of the threaded connection and the locking nut 251, the first mounting portion 2111 and the second mounting portion 2112 can be firmly fixed together, ensuring the stability of the mounting structure 20, and maintaining a reliable connection even under the influence of vibration or other external forces. In addition, the threaded connection and the locking nut 251 connection make the installation and removal process simple and fast, without the need for complex tools or steps, providing simple operation and flexible adjustment capabilities, and are suitable for acoustic measurement environments that require frequent maintenance or adjustment.

[0088] Further, in this embodiment, the first mounting portion 2111 is provided with the first mounting hole a, and the first mounting hole a is provided through the connecting portion 214 .

[0089] Setting the first mounting hole a through the connecting portion 214 will not affect the threaded connection between the external thread on the connecting portion 214 and the locking nut 251, and combining the mounting hole of the microphone 30 with the connecting portion 214 reduces additional structural requirements, making the overall structure more compact and simple.

[0090] It should also be noted that the connecting portion 214 protrudes from the first mounting portion 2111, and the first mounting hole a passes through the connecting portion 214, so that the length of the first mounting hole a is long enough to form a larger mounting surface for the peripheral side of the microphone 30, making the microphone 30 more stable.

[0091] Furthermore, in this embodiment, a second connecting hole 211a is provided on the mounting portion 211, and a third connecting hole 213a corresponding to the second connecting hole 211a is provided on the second connecting portion 213; the mounting structure 20 also includes a connecting member 26, and the connecting member 26 is passed through the second connecting hole 211a and the third connecting hole 213a to fix the mounting portion 211 and the second connecting portion 213.

[0092] The connecting member 26 is used to fix the mounting portion 211 and the second connecting portion 213 together. The connecting member 26 can be a mechanical fastener such as a bolt or a pin, and the specific one can be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0093] Through the cooperation of the second connection hole 211a and the third connection hole 213a, and the fixing of the connecting member 26, the mounting portion 211 and the second connection portion 213 can be firmly fixed together, ensuring the stability of the entire structure, and maintaining a reliable connection even under the influence of vibration or other external forces. The second connection hole 211a and the third connection hole 213a ensure that the mounting portion 211 and the second connection portion 213 are accurately aligned during installation.

[0094] In this way, after the second connection portion 213 and the mounting portion 211 are separately formed and arranged, they are assembled through the connection member 26 , which facilitates manufacturing and forming.

[0095] like Figure 5 As shown, taking the object to be detected 200 as a single-cylinder compressor with a cylindrical structure as an example, the acoustic measurement device 100 is used to measure the time domain information of the single-cylinder compressor with a cylindrical structure in one step by using the snapshot method, that is, to perform acoustic measurement of the changing state during the startup process of the compressor.

[0096] In the acoustic measurement device 100, the bracket 1 includes an upper portion and a lower portion both in an annular structure and arranged coaxially up and down, and each mounting column 11 is arranged at equal angular intervals on the cylindrical surface between the upper portion and the lower portion. The number and array arrangement of the mounting structures 20 conform to the Fibonacci array.

[0097] During measurement, the microphone 30 is first calibrated, and then the microphones 30 are installed correspondingly to the mounting structures 20 according to the channel settings of the microphones 30, so that each microphone 30 is installed and fixed according to the Fibonacci array.

[0098] The compressor as the object to be tested should be adjusted to be placed at the geometric center position of the array formed by the microphones 30 at a top-down angle, and then the compressor is started to measure the sound field distributed by the compressor.

[0099] In actual setting, each microphone 30 in the microphone array 30 is preferably arranged in a manner that the relative distance to the compressor is consistent, that is, the straight-line distance from each microphone 30 to the surface of the compressor is consistent; in this case, the bracket 1 should be arranged on the periphery of the compressor in a structure that conforms to the compressor. This arrangement is conducive to reducing the difficulty of data analysis in acoustic measurement.

[0100] like Figure 6 As shown, taking the single-cylinder compressor with a cylindrical structure as an example, the acoustic measuring device 100 is used to measure the frequency domain information of the single-cylinder compressor with a cylindrical structure by multiple molding using a scanning method, that is, the acoustic measurement is performed after the compressor is started and enters a stable operating state.

[0101] In the acoustic measurement device 100 , the bracket 1 includes an upper portion and a lower portion both in an annular structure and coaxially arranged up and down, and each mounting column 11 is arranged at equal angular intervals on the cylindrical surface between the upper portion and the lower portion.

[0102] In each measurement, each microphone 30 is installed and fixed by each mounting structure 20 in a fully distributed arrangement along a certain mounting column 11 , that is, arranged in a single row; in multiple measurements, each microphone 30 is installed on a different mounting column 11 .

[0103] In the actual measurement process, the mounting structure 20 is generally disassembled after each measurement and replaced with other mounting columns 11, and the mounting structure 20 and the microphone 30 are reinstalled to change the vertical position of the microphone 30; when the measurement accuracy requirement is low and a large error is allowed in manual rotation adjustment, the vertical position of the microphone 30 can also be changed by directly rotating the fixing device of the microphone 30.

[0104] 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: The bracket includes a plurality of mounting posts arranged sequentially and spaced apart in a width direction thereof; as well as, A plurality of detection components are arranged at intervals in the length direction of the mounting column and / or the width direction of the bracket, each of the detection components includes a mounting structure and a microphone detachably mounted on the mounting structure, and the mounting structure is detachably mounted on the corresponding mounting column.

2. The acoustic measurement device according to claim 1, characterized in that The mounting structure comprises: A mounting body, wherein the mounting body has a first mounting hole extending in a first direction along the thickness of the bracket, and the mounting body is further provided with a slide groove extending in a second direction along the width of the bracket, and the slide groove is connected to the first mounting hole; a sliding portion, the sliding portion having a second mounting hole extending along the first direction, the sliding portion being slidably disposed in the sliding groove along the second direction, the second mounting hole being able to align with the first mounting hole during a sliding stroke of the sliding portion, so that the microphone can be mounted in the first mounting hole and the second mounting hole; and An elastic member is disposed between the mounting portion and the sliding portion so that the sliding portion can be elastically retracted and moved along the second direction.

3. The acoustic measurement device according to claim 2, characterized in that The mounting body comprises a mounting portion, and a first connecting portion and a second connecting portion arranged at the same end of the mounting portion in the first direction, the first connecting portion and the second connecting portion are spaced apart and arranged opposite to each other in the second direction, the first connecting portion is provided with a first slot section extending along the second direction, the second connecting portion is provided with a second slot section extending along the second direction, and the first slot section and the second slot section form the slide groove; The mounting portion is provided with the first mounting hole, and the first mounting hole is located between the first connecting portion and the second connecting portion in the second direction.

4. The acoustic measurement device according to claim 2, characterized in that The mounting portion is provided with a first positioning hole connected to the slide groove, and the sliding portion is provided with a second positioning hole corresponding to the first positioning hole; The mounting structure further includes a positioning member, and the positioning member is inserted into the first positioning hole and the second positioning hole to position the sliding portion on the mounting portion.

5. The acoustic measurement device according to claim 2, characterized in that: The mounting portion is provided with a guide groove with a notch facing the sliding portion; The elastic member comprises a spring, one end of which is mounted on the guide groove, and the other end of which is connected to the sliding portion.

6. The acoustic measurement device according to claim 3, characterized in that: The mounting portion further includes a first mounting portion and a second mounting portion spaced apart in the first direction; The mounting structure further includes a fixing structure for fixing the first mounting portion and the second mounting portion, so that the mounting column is clamped between the first mounting portion and the second mounting portion.

7. The acoustic measurement device according to claim 6, characterized in that A limiting groove is concavely formed on one side of the first mounting portion and the second mounting portion that are close to each other, and the two limiting grooves are arranged opposite to each other to define an installation gap for installing the mounting column.

8. The acoustic measurement device according to claim 6, characterized in that A connecting portion is protruded from one side of the first mounting portion toward the second mounting portion, the connecting portion is provided with an external thread, and the second mounting portion is provided with a first connecting hole for the connecting portion to pass through; The fixing structure further includes a locking nut disposed on a side of the second mounting portion away from the first mounting portion, and the locking nut is threadedly connected to the connecting portion.

9. The acoustic measurement device according to claim 8, characterized in that: The first mounting portion is provided with the first mounting hole, and the first mounting hole is provided through the connecting portion.

10. The acoustic measurement device according to claim 3, characterized in that: The mounting portion is provided with a second connection hole, and the second connection portion is provided with a third connection hole corresponding to the second connection hole; The mounting structure further includes a connecting member, which is inserted through the second connecting hole and the third connecting hole to fixedly connect the mounting portion with the second connecting portion.

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