Three-layer microphone array sound source positioning device

Abstract

The utility model discloses a three-layer microphone array sound source positioning device, which comprises microphones, a circuit board electrically connected with the microphones, an upper array shell, a middle array shell and a lower array shell, the two sides of the middle array shell are connected with the upper array shell and the lower array shell respectively. The microphones are uniformly distributed on the outer sides of the upper array shell and the middle array shell in an inclined manner through a supporting device; the microphone array has the advantages that the microphones are evenly distributed on the upper array shell and the lower array shell, so that up-down multi-angle omnibearing sound absorption can be performed, and surrounding sound can be monitored and acquired more sufficiently.

Description

A three-layer microphone array sound source localization device Technical Field

[0001] This utility model relates to the field of acoustic acquisition, and in particular to a three-layer microphone array sound source localization device. Background Technology

[0002] A microphone array is an acoustic signal acquisition device that uses several microphones arranged in space according to certain rules to spatially sample acoustic signals in the working environment, so as to acquire sound from multiple directions. Most existing microphone arrays are planar arrays or single-layer ring-shaped uniformly distributed arrays. The reason why they cannot detect sound from multiple directions and angles is that most microphone arrays are planar arrays or single-layer ring-shaped uniformly distributed arrays, which can only detect sound in a certain direction and within a single layer. Summary of the Invention

[0003] Purpose of the utility model: The purpose of this utility model is to solve the problems in the prior art and provide a three-layer microphone array sound source localization device.

[0004] Technical solution: A three-layer microphone array sound source localization device is proposed, including a microphone and a circuit board electrically connected to the microphone, and further comprising:

[0005] Upper array housing, middle array housing, lower array housing;

[0006] The two sides of the middle array shell are respectively connected to the upper array shell and the lower array shell;

[0007] The microphones are evenly distributed on the outside of the upper array housing and the middle array housing and placed at an angle by a support device.

[0008] The circuit board is fixed inside the central array housing.

[0009] Preferably, both the upper array housing and the lower array housing are composed of cylindrical and frustum-shaped housing structures, and the microphone is fixed to the outer wall of the frustum-shaped housing by a support device.

[0010] Preferably, the support device includes:

[0011] Support tube and windproof cover, one end of the support tube is fixed to the upper array shell or the lower array shell;

[0012] The other end of the support tube is connected to the microphone, and a windproof cover is fitted on the outside of the support tube and placed on the outside of the microphone.

[0013] Preferably, a wind turbine sleeve is fitted on the outside of the support tube, the wind turbine sleeve including a frustum-shaped tube body disposed on the outside of one end of the wind turbine sleeve, and the windproof cover is fitted on the outside of the wind turbine sleeve.

[0014] Preferably, one end of the support tube is connected to a cap, the cap has an opening, the opening is covered with a waterproof membrane, and the microphone is located on the side of the waterproof membrane inside the cap.

[0015] Preferably, one end of the support tube is threaded into the outside of the upper or lower array housing, and a first sealing ring is embedded between the upper or lower array housing and the support tube.

[0016] Preferably, a second sealing ring is provided on the outer side of one end of the support tube, the wind ball rubber sleeve is fitted on the outer side of the support tube, and one end of the cap can abut against the second sealing ring.

[0017] Preferably, an extension rod is fixedly provided at the lower end of the lower array housing, and a mounting base is fixedly provided at the lower end of the extension rod.

[0018] Preferably, the lower end of the extension rod is provided with a second insertion tube connected to a first insertion tube. The second insertion tube is threadedly inserted into the mounting base, and the mounting base is provided with a screw that is threadedly inserted into the second insertion tube.

[0019] Preferably, the upper array housing and the middle array housing are fixed with screws, and sealing gaskets are installed at the connection points;

[0020] The middle array base plate of the middle array housing is fixed to the lower array housing with screws, and sealing gaskets are installed at the connection points.

[0021] Preferably, the support tube is set at a 45-degree angle to the horizontal plane.

[0022] Beneficial effects: By evenly distributing microphones on the upper and lower array shells, sound can be absorbed from multiple angles, directions, and levels, resulting in more comprehensive monitoring of the surrounding sound.

[0023] It adopts a layered structure (top, middle, and bottom), which facilitates processing and saves costs;

[0024] The design incorporates multiple sealing gaskets and a waterproof membrane, resulting in better sealing and waterproofing. Attached Figure Description

[0025] Figure 1 is a cross-sectional structural diagram of this utility model;

[0026] Figure 2 is a schematic diagram of one side of the structure of this utility model;

[0027] Figure 3 is a schematic cross-sectional view of the windproof cover of this utility model.

[0028] Figure 4 is a schematic diagram of the mounting base structure of this utility model.

[0029] Figure label:

[0030] 1. Upper array housing; 2. Middle array housing; 3. Middle array base plate; 4. Lower array housing; 5. Cap; 6. Support tube; 7. Extension rod; 8. Mounting base; 9. Windproof cover; 10. Waterproof membrane; 11. Wind tube sleeve; 12. Microphone; 13. Circuit board; 14. Frustum-shaped tube; 15. Opening; 16. First sealing ring; 17. Second sealing ring; 18. First insertion tube; 19. Second insertion tube; 20. Screw. Detailed Implementation

[0031] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1

[0033] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "comprising" and similar expressions used herein mean that the element or object preceding the word covers the element or object listed following the word and its equivalents, but does not exclude other elements or objects.

[0035] To address the problems existing in the prior art, and referring to Figures 1-3, a three-layer microphone array sound source localization device includes a microphone 12 and a circuit board 13 electrically connected to the microphone 12, and further includes:

[0036] Upper array housing 1, middle array housing 2, lower array housing 4;

[0037] The two sides of the middle array housing 2 are respectively connected to the upper array housing 1 and the lower array housing 4;

[0038] The microphones 12 are evenly distributed on the outside of the upper array housing 1 and the middle array housing 2 by a support device and are placed at an angle.

[0039] The circuit board 13 is fixed inside the central array housing 2.

[0040] Specifically, existing technologies directly connect the circuit board 13 and the microphone 12 to acquire sound signals. This application uses multi-angle distributed microphones 12, especially on the upper array housing 1 and the lower array housing 4, to facilitate the acquisition of sound from all directions and in multiple layers.

[0041] In some specific embodiments, the upper array housing 1 and the lower array housing 4 are both composed of cylindrical and frustum-shaped housing structures, and the microphone 12 is fixed to the outer wall of the frustum-shaped housing by a support device.

[0042] Specifically, the microphones 12 are arranged and fixed at an angle on the surfaces of the upper array housing 1 and the lower array housing 4.

[0043] In some specific embodiments, the support device includes:

[0044] Support tube 6 and windproof cover 9, one end of the support tube 6 is fixed to the upper array shell 1 or the lower array shell 4;

[0045] The other end of the support tube 6 is connected to the microphone 12, and a windproof cover 9 is provided on the outside of the support tube 6 and placed on the outside of the microphone 12.

[0046] Specifically, when collecting sound signals, the windproof cover 9 improves the sound reception and dust protection.

[0047] In some specific embodiments, a wind turbine sleeve 11 is provided on the outside of the support tube 6. The wind turbine sleeve 11 includes a frustum-shaped tube 14 located on the outside of one end of the wind turbine sleeve 11. The windproof cover 9 is fitted on the outside of the wind turbine sleeve 11.

[0048] Specifically, the wind shield 9 is more effectively fixed to the outside of the wind turbine sleeve 11.

[0049] In some specific embodiments, one end of the support tube 6 is connected to a cap 5, the cap 5 has an opening 15, and a waterproof membrane 10 is provided on the opening 15. The microphone 12 is located on the side of the waterproof membrane 10 inside the cap 5. When recording sound, the waterproof membrane 10 provides better waterproofing.

[0050] In some specific embodiments, one end of the support tube 6 is threadedly inserted into the outside of the upper array housing 1 or the lower array housing 4, and a first sealing ring 16 is embedded between the upper array housing 1 or the lower array housing 4 and the support tube 6. The upper array housing 1 or the lower array housing 4 and the support tube 6 are easy to disassemble, and the sealing and waterproofing effect is better.

[0051] In some specific embodiments, an annular notch 17 is provided on the outer side of one end of the support tube 6, and one end of the cap 5 can abut against the second sealing ring 17 to achieve a sealing effect. The sealing effect is better when the wind ball rubber sleeve 11 is fitted on the outer side of the second sealing ring 17.

[0052] In some specific embodiments, an extension rod 7 is fixedly provided at the lower end of the lower array housing 4, and a mounting base 8 is fixedly provided at the lower end of the extension rod 7, so as to facilitate the stable fixed support of the lower array housing 4 by means of the extension rod 7.

[0053] In some specific embodiments, the mounting base 8 can be installed on the ground or suspended in a location where it can be suspended.

[0054] In some specific embodiments, the lower end of the extension rod 7 is provided with a second insertion tube 19 connected to a first insertion tube 18. The second insertion tube 19 is threadedly inserted into the mounting base 8. The mounting base 8 is provided with a screw 20 that is threadedly inserted into the second insertion tube 19. By rotating the extension rod 7, the second insertion tube 19 can be rotated and raised on the mounting base 8. The screw 20 is used to further fix the second insertion tube 19.

[0055] In some specific embodiments, the upper array housing 1 and the middle array housing 2 are fixed with screws, and sealing gaskets are installed at the connection positions;

[0056] The middle array base plate 3 of the middle array housing 2 is fixed to the lower array housing 4 with screws, and a sealing gasket is installed at the connection position to facilitate disassembly and improve the sealing effect between the upper array housing 1, the middle array housing 2 and the lower array housing 4.

[0057] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A three-layer microphone array sound source localization device, comprising a microphone (12) and a circuit board (13) electrically connected to the microphone (12), characterized in that; It also includes: an upper array housing (1), a middle array housing (2), and a lower array housing (4); the two sides of the middle array housing (2) are connected to the upper array housing (1) and the lower array housing (4) respectively; the microphones (12) are evenly distributed on the outside of the upper array housing (1) and the middle array housing (2) by a support device and are placed at an angle; the circuit board (13) is fixed inside the middle array housing (2).

2. The three-layer microphone array sound source localization device according to claim 1, characterized in that, The upper array shell (1) and the lower array shell (4) are both composed of cylindrical and frustum-shaped shell structures, and the microphone (12) is fixed to the outer wall of the frustum-shaped shell by a support device.

3. The three-layer microphone array sound source localization device according to claim 1, characterized in that, The support device includes a support tube (6) and a windproof cover (9). One end of the support tube (6) is fixed to the upper array shell (1) or the lower array shell (4). The other end of the support tube (6) is connected to the microphone (12). The windproof cover (9) is provided on the outside of the microphone (12).

4. The sound source localization device for a three-layer microphone array according to claim 3, characterized in that, The support tube (6) is fitted with a wind ball sleeve (11) on the outside. The wind ball sleeve (11) includes a frustum-shaped tube (14) located on the outside of one end of the wind ball sleeve (11). The wind shield (9) is fitted on the outside of the wind ball sleeve (11).

5. The sound source localization device for a three-layer microphone array according to claim 4, characterized in that, One end of the support tube (6) is connected to a cap (5), the cap (5) has an opening (15), the opening (15) has a waterproof membrane (10), and the microphone (12) is located on the side of the waterproof membrane (10) inside the cap (5).

6. The sound source localization device for a three-layer microphone array according to claim 3, characterized in that, One end of the support tube (6) is threaded into the outside of the upper array housing (1) or the lower array housing (4), and a first sealing ring (16) is embedded between the upper array housing (1) or the lower array housing (4) and the support tube (6).

7. The three-layer microphone array sound source localization device according to claim 5, characterized in that, The support tube (6) has a second sealing ring (17) on the outside of one end, the wind ball sleeve (11) is sleeved on the outside of the support tube (6), and one end of the cap (5) can abut against the second sealing ring (17).

8. The sound source localization device for a three-layer microphone array according to claim 1, characterized in that, An extension rod (7) is fixedly provided at the lower end of the lower array housing (4), and a mounting base (8) is fixedly provided at the lower end of the extension rod (7).

9. A three-layer microphone array sound source localization device according to claim 8, characterized in that, The lower end of the extension rod (7) is provided with a second insertion tube (19) connected through a first insertion tube (18). The second insertion tube (19) is threaded onto the mounting base (8). The mounting base (8) is provided with a screw (20) that is threaded into the second insertion tube (19).

10. A three-layer microphone array sound source localization device according to claim 8, characterized in that, The upper array housing (1) and the middle array housing (2) are fixed with screws, and a sealing gasket is installed at the connection position; the middle array base plate (3) of the middle array housing (2) and the lower array housing (4) are fixed with screws, and a sealing gasket is installed at the connection position.

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