Array microphone convenient for sound source localization

Abstract

The array microphone comprises a sound source detector and a support, the support comprises a bottom plate, a supporting rod is arranged above the bottom plate and connected with the bottom plate through a screw, a rotating mechanism is arranged at one end of the supporting rod, a transmission assembly is arranged on the side face of the bottom of the supporting rod, and a connecting rod is arranged on the side face of the rotating mechanism. One end of the connecting rod is connected with the sound source detector through a screw; the utility model has the advantages that the structure is simple, the stability is strong, the direction of the array microphone is convenient to adjust, and the positioning is accurate.

Description

Technical Field

[0001] The utility model belongs to the technical field of microphone manufacturing, and particularly relates to an array microphone facilitating sound source positioning. Background Art

[0002] A microphone array, as an acoustic detection device that combines multiple microphones in a specific geometric shape distribution, has wide and remarkable applications in the field of modern acoustic measurement. The core advantage of this device lies in its excellent signal acquisition performance in complex noise environments, which provides strong support for it in multiple application scenarios.

[0003] In some environments, the microphone array needs to be placed parallel to the sound source surface. The accuracy of the position of the microphone array will have a great impact on the sound source and positioning test results. Commonly used microphone arrays are generally fixed with a tripod. However, the microphone array fixed by the tripod can only be used to test the noise source surface perpendicular to the operation platform. When there is a certain angle between the noise source surface and the operation platform, readjustment is required, the operation process is cumbersome, and the versatility is not strong. Content of the Utility Model

[0004] The purpose of the utility model is to provide an array microphone facilitating sound source positioning to solve the problems that the fixing method of the common microphone array is inconvenient to adjust the angle and affects the positioning and test effects.

[0005] The utility model realizes the above purpose through the following technical solutions: It includes a sound source detector and a bracket. The bracket includes a bottom plate, a support rod is arranged above the bottom plate and connected by screws. One end of the support rod is provided with a rotating mechanism, and a transmission component is arranged on the side of the bottom of the support rod. A connecting rod is arranged on the side of the rotating mechanism, and one end of the connecting rod is connected to the sound source detector by screws.

[0006] Further, the rotating mechanism includes a fixed wheel disc, a movable wheel disc is arranged on one side of the fixed wheel disc, the other end of the connecting rod is connected to the movable wheel disc by screws, a cover cylinder is arranged on the other side of the fixed wheel disc, the cover cylinder is connected to the fixed wheel disc by screws, the top of the support rod is connected to both the fixed wheel disc and the cover cylinder by screws, a first bevel gear and a second bevel gear that mesh with each other are arranged inside the cover cylinder, a transmission rod is arranged on one side of the second bevel gear and tightly connected by screws, and the transmission rod penetrates through the cover cylinder.

[0007] Further, a C-shaped sliding groove is provided inside the movable roulette wheel. A sliding rod is provided inside the C-shaped sliding groove. The sliding rod is slidably connected to the C-shaped sliding groove. One end of the sliding rod is fixedly connected to the fixed roulette wheel. The other end of the sliding rod is provided with a limit buckle and is connected by a screw. A central shaft is provided in the middle of the movable roulette wheel and is tightly connected by a screw. The central shaft is connected to the fixed roulette wheel through a rotating shaft. The first bevel gear is connected to the central shaft through a buckle. The central shaft is connected to the cover cylinder through a rotating shaft.

[0008] Further, the transmission assembly includes a transmission box. The transmission box is connected to the bottom plate by a screw. A motor is provided on the top of the transmission box and is connected by a screw. The transmission box is connected to the transmission rod through gear transmission. The output end of the motor is connected to the transmission box.

[0009] Further, the transmission rod penetrates through the support rod. An activity sleeve is provided outside the central shaft. The activity sleeve is connected to the other side of the second bevel gear through a rotating shaft.

[0010] Beneficial effects: The design of the present utility model is reasonable and has the following beneficial effects:

[0011] In the solution of the present utility model, after the sound source detector locates the direction of the sound source, the motor and the transmission box drive the transmission rod, the first bevel gear, the second bevel gear, the central shaft, and the movable roulette wheel to rotate around the fixed roulette wheel. The connecting rod rotates together with the movable roulette wheel to adjust the direction of the sound source detector, facilitating the sound source detector to face the sound source directly to receive the sound source. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of the present utility model;

[0013] Figure 2 is an exploded view of the structure of the rotating mechanism of the present utility model;

[0014] Figure 3 is a cross-sectional view of the structure of the present utility model.

[0015] In the figure: 1 - sound source detector, 2 - bracket;

[0016] 21 - bottom plate, 22 - support rod, 23 - rotating mechanism, 24 - transmission assembly, 25 - connecting rod;

[0017] 231 - fixed roulette wheel, 232 - movable roulette wheel, 233 - cover cylinder, 234 - first bevel gear, 235 - second bevel gear, 236 - transmission rod, 237 - C-shaped sliding groove, 238 - sliding rod, 239 - central shaft, 241 - transmission box, 242 - motor; 2391 - activity sleeve. Detailed Embodiments

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0019] Combined with Figures 1 to 3 As shown, an array microphone for facilitating sound source localization includes a sound source detector 1 and a bracket 2. The bracket 2 includes a bottom plate 21. Above the bottom plate 21, there is a support rod 22 which is connected by screws. One end of the support rod 22 is provided with a rotating mechanism 23, and on the side of the bottom of the support rod 22, there is a transmission component 24. On the side of the rotating mechanism 23, there is a connecting rod 25. One end of the connecting rod 25 is connected to the sound source detector 1 by screws.

[0020] Among them, the rotating mechanism 23 includes a fixed wheel disc 231. On one side of the fixed wheel disc 231, there is a movable wheel disc 232. The other end of the connecting rod 25 is connected to the movable wheel disc 232 by screws. On the other side of the fixed wheel disc 231, there is a cover cylinder 233 which is connected to the fixed wheel disc 231 by screws. The top of the support rod 22 is connected to both the fixed wheel disc 231 and the cover cylinder 233 by screws. Inside the cover cylinder 233, there are a first bevel gear 234 and a second bevel gear 235 which are meshed with each other. On one side of the second bevel gear 235, there is a transmission rod 236 which is tightly connected by screws. The transmission rod 236 penetrates through the cover cylinder 233, and the transmission rod 236 drives the second bevel gear 235 to drive the first bevel gear 234 to rotate;

[0021] Inside the movable wheel disc 232, there is a C-shaped chute 237. Inside the C-shaped chute 237, there is a sliding rod 238. The sliding rod 238 is slidably connected to the C-shaped chute 237. One end of the sliding rod 238 is fixedly connected to the fixed wheel disc 231. The other end of the sliding rod 238 is provided with a limit buckle and is connected by screws. In the middle of the movable wheel disc 232, there is a central shaft 239 which is tightly connected by screws. The central shaft 239 is connected to the fixed wheel disc 231 by a rotating shaft. The first bevel gear 234 is connected to the central shaft 239 by a buckle. The central shaft 239 is connected to the cover cylinder 233 by a rotating shaft. After the first bevel gear 234 rotates, it drives the central shaft 239 and the movable wheel disc 232 to rotate around the fixed wheel disc 231. The sliding rod 238 limits the rotation angle of the movable wheel disc 232, and the limit buckle prevents the movable wheel disc 232 from detaching from the fixed wheel disc 231;

[0022] The transmission component 24 includes a transmission box 241. The transmission box 241 is connected to the bottom plate 21 by screws. On the top of the transmission box 241, there is a motor 242 which is connected by screws. The transmission box 241 is connected to the transmission rod 236 by gear transmission. The output end of the motor 242 is connected to the transmission box 241. The motor 242 and the transmission box 241 drive the transmission rod 236 to rotate;

[0023] The transmission rod 236 passes through the support rod 22. An active sleeve 2391 is arranged outside the central shaft 239. The active sleeve 2391 is connected to the other side of the second bevel gear 235 through a rotating shaft. The active sleeve 2391 and the support rod 22 restrict the transmission rod 236 to prevent deviation.

[0024] Working principle: When the present utility model is in use, after the sound source detector 1 locates the sound source direction, the motor 242 and the transmission box 241 drive the transmission rod 236 to rotate. The transmission rod 236 drives the second bevel gear 235 to drive the first bevel gear 234 to rotate. After the first bevel gear 234 rotates, it drives the central shaft 239 and the active wheel disc 232 to rotate around the fixed wheel disc 231. The connecting rod 25 rotates together with the active wheel disc 232 to adjust the direction of the sound source detector 1, so that the front of the sound source detector 1 faces the sound source. The sliding rod 238 restricts the rotation angle of the active wheel disc 232, and the limit buckle prevents the active wheel disc 232 from disengaging from the fixed wheel disc 231.

[0025] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0026] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An array microphone for facilitating sound source localization, comprising a sound source detector (1) and a bracket (2), characterized in that: The bracket (2) comprises a bottom plate (21), a support rod (22) is provided above the bottom plate (21) and connected by screws, a rotating mechanism (23) is provided at one end of the support rod (22), a transmission assembly (24) is provided on the side of the bottom of the support rod (22), a connecting rod (25) is provided on the side of the rotating mechanism (23), and one end of the connecting rod (25) is connected to the sound source detector (1) by screws; The rotating mechanism (23) comprises a fixed wheel disc (231), a movable wheel disc (232) is provided on one side of the fixed wheel disc (231), the other end of the connecting rod (25) is connected to the movable wheel disc (232) by screws, a cover tube (233) is provided on the other side of the fixed wheel disc (231), the cover tube (233) is connected to the fixed wheel disc (231) by screws, the top of the support rod (22) is connected to the fixed wheel disc (231) and the cover tube (233) by screws, a first bevel gear (234) and a second bevel gear (235) meshing with each other are provided on the inner side of the cover tube (233), a transmission rod (236) is provided on one side of the second bevel gear (235) and is fastened by screws, and the transmission rod (236) passes through the cover tube (233); A C-shaped slide groove (237) is provided on the inner side of the movable wheel disc (232), a slide rod (238) is provided on the inner side of the C-shaped slide groove (237), the slide rod (238) is slidably connected to the C-shaped slide groove (237), one end of the slide rod (238) is fixedly connected to the fixed wheel disc (231), the other end of the slide rod (238) is provided with a limit buckle and is connected by screws, a central shaft (239) is provided in the middle of the movable wheel disc (232) and is fastened by screws, the central shaft (239) is connected to the fixed wheel disc (231) by a rotating shaft, the first bevel gear (234) is connected to the central shaft (239) by a buckle, and the central shaft (239) is connected to the cover tube (233) by a rotating shaft.

2. The array microphone for facilitating sound source localization according to claim 1, characterized in that: The transmission assembly (24) comprises a transmission box (241), the transmission box (241) is connected to the base plate (21) by screws, a motor (242) is provided on the top of the transmission box (241) and is connected by screws, the transmission box (241) is connected to the transmission rod (236) by gear transmission, and the output end of the motor (242) is connected to the transmission box (241).

3. The array microphone for facilitating sound source localization according to claim 2, characterized in that: The transmission rod (236) passes through the support rod (22); a movable sleeve (2391) is provided on the outside of the central shaft (239); and the movable sleeve (2391) is connected to the other side of the second bevel gear (235) via a rotating shaft.

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