Array microphone device

Abstract

The utility model relates to the technical field of microphones, in particular to an array type microphone device. The array microphone device comprises a shell, a main control circuit board and a microphone array module, the shell comprises a base, a front cover frame and a protection plate, the front cover frame comprises a middle opening, the shell and the front cover frame are connected to form a containing cavity, the protection plate is connected with the front cover frame and covers the middle opening, and the microphone array module is arranged in the containing cavity. And the main control circuit board and the microphone array module are arranged in the accommodating cavity. According to the array microphone device, the base provides basic support for the array microphone device, the front cover frame is provided with the middle opening, on one hand, the front cover frame is matched with the base to form the containing cavity, on the other hand, the front cover frame is used for installing and containing the microphone array module, and the protection plate is connected to the front cover frame, covers the middle opening and plays a role in protecting the microphone array module. And meanwhile, the sound transmission through hole is arranged on the microphone element, so that the pickup of the microphone element is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of microphones, in particular to an array microphone device. Background Art

[0002] An array microphone pickup device is a microphone system that uses multiple microphone elements to capture and pick up sound in a specific direction or area. It usually consists of multiple microphone units that are placed together in a specific arrangement to achieve directional capture and processing of sound.

[0003] However, the existing array microphone pickup device has a relatively complex structure, and the internal components are difficult to assemble, and does not meet the needs of large-scale production of the product. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an array microphone device in view of the above-mentioned defects of the prior art, so as to solve the problem that the existing array microphone sound pickup device has a relatively complex structure.

[0005] The utility model solves the technical problem by adopting a technical solution as follows: providing an array microphone device, the array microphone device comprising a housing, a main control circuit board and a microphone array module, the housing comprising a base, a front cover frame and a protection plate, the front cover frame comprising a middle opening, the housing and the front cover frame are connected to form a receiving cavity, the protection plate is connected to the front cover frame and covers the middle opening, the main control circuit board and the microphone array module are both arranged in the receiving cavity;

[0006] Among them, the protection plate includes a sound-transmitting through hole, the main control circuit board is electrically connected to the microphone array module, and the multiple microphone elements on the microphone array module are arranged to be aligned with the corresponding sound-transmitting through holes.

[0007] Among them, a preferred solution is: the microphone element is a first microphone element, the microphone array module also includes a microphone array circuit board, the microphone array circuit board is a ring structure, and a plurality of the first microphone elements are arranged on the microphone array circuit board.

[0008] Among them, the preferred solution is: a positioning annular groove is provided on the inner side of the protective plate, and the microphone array circuit board is arranged in the positioning annular groove; wherein, a plurality of the sound-transmitting through holes are arranged on the positioning annular groove, and the first microphone element of the microphone array circuit board is inserted into the sound-transmitting through hole.

[0009] Among them, a preferred solution is that the microphone element is a second microphone element, the microphone array module also includes a second microphone element arranged in the middle of the ring of the microphone array circuit board, and the second microphone element includes a dual microphone head.

[0010] Among them, the preferred solution is: a positioning groove and a screw locking hole are set on the inner side of the protective plate, the array microphone device also includes a positioning plate, the second microphone element is set in the positioning groove, the positioning plate presses the second microphone element to be set, and the screw is inserted into and fixed in the screw locking hole to fix the second microphone element.

[0011] Among them, a preferred solution is: a plurality of the first microphone elements are evenly arranged on the microphone array circuit board in a surrounding manner, and a plurality of the second microphone elements are evenly arranged on the protection board in a surrounding manner.

[0012] Among them, the preferred solution is: the front cover frame includes a light-transmitting window, the protective plate also includes a light-transmitting through hole, the array microphone device includes an indicator light and a remote control sensor connected to the main control circuit board, the indicator light is aligned with the light-transmitting through hole, and the remote control sensor is aligned with the light-transmitting window.

[0013] Among them, the preferred solution is: the base includes a central raised structure, the end surface of the main control circuit board facing the central raised structure is provided with a plurality of electronic components and an interface unit, the central raised structure includes an interface hole, and the interface unit is arranged at the interface hole; wherein the interface unit includes at least one of a LAN port, a USB port, and a LINE port.

[0014] Among them, a preferred solution is: the front cover frame is provided with a support plate around the middle opening, and the protection plate is arranged in the middle opening and is arranged in close contact with the support plate.

[0015] Among them, the preferred solution is: the array microphone device also includes a protective net structure arranged outside the protective plate, a surrounding gap is formed between the protective plate and the front cover frame, an insert plate is arranged on the edge of the protective net structure, and the protective net structure is inserted into the surrounding gap through the insert plate.

[0016] The beneficial effect of the present invention is that, compared with the prior art, the base of the present invention provides basic support for the array microphone device, and the front cover frame has a central opening, which on the one hand cooperates with the base to form a accommodating cavity, and on the other hand is used to install and accommodate the microphone array module. The protective plate is connected to the front cover frame, covering the central opening, thereby protecting the microphone array module. At the same time, according to the sound-transmitting through holes arranged thereon, the sound pickup of the microphone element is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0018] Figure 1 It is a schematic diagram of the exploded structure of the array microphone device of the utility model;

[0019] Figure 2 It is a schematic diagram of the front structure of the protection plate of the utility model;

[0020] Figure 3 It is a schematic diagram of the back structure of the protection plate of the utility model;

[0021] Figure 4 It is a front structural schematic diagram of the front cover frame of the utility model;

[0022] Figure 5 It is a schematic diagram of the back structure of the front cover frame of the utility model;

[0023] Figure 6 It is a schematic diagram of the structure of the first microphone element and the second microphone element of the utility model;

[0024] Figure 7 It is a schematic diagram of the structure of the protection plate, the first microphone element and the second microphone element of the utility model;

[0025] Figure 8 It is a structural schematic diagram of the base of the utility model;

[0026] Fig. 9 It is a structural schematic diagram of the surrounding gap of the utility model. DETAILED DESCRIPTION

[0027] Now, in conjunction with the accompanying drawings, a preferred embodiment of the present utility model is described in detail.

[0028] like Figures 1 to 9 As shown, the utility model provides a preferred embodiment of an array microphone device.

[0029] An array microphone device, the array microphone device includes a shell, a main control circuit board 200 and a microphone array module, the shell includes a base 100, a front cover frame 500 and a protective plate 600, the front cover frame 500 includes a central opening 501, the shell and the front cover frame 500 are connected to form a accommodating cavity, the protective plate 600 is connected to the front cover frame 500 and covers the central opening 501, the main control circuit board 200 and the microphone array module are both arranged in the accommodating cavity; wherein the protective plate 600 includes a sound-transmitting through hole 610, the main control circuit board 200 is electrically connected to the microphone array module, and a plurality of microphone elements on the microphone array module are arranged to be aligned with the corresponding sound-transmitting through holes 610.

[0030] Specifically, the base 100 provides basic support for the array microphone device, and the front cover frame 500 has a central opening 501. On the one hand, it cooperates with the base 100 to form a accommodating cavity, and on the other hand, it is used to install and accommodate the microphone array module. The protective plate 600 is connected to the front cover frame 500, covering the central opening 501, thereby protecting the microphone array module. At the same time, according to the sound-transmitting through hole 610 arranged thereon, it does not affect the sound pickup of the microphone element.

[0031] The main control circuit board 200 is arranged in the accommodating cavity and is used to control various functions of the array microphone device. The microphone array module includes multiple microphone elements for capturing sound signals. Since the microphone elements are arranged in an array or a regular layout, stronger directivity is achieved, and the sound from a specific direction is captured more accurately, and noise from other directions is suppressed. By performing signal processing on the microphone elements in the array, the sound sources at different positions in the space can be identified and filtered, thereby improving the accuracy of speech recognition and audio capture, and by processing the signals received by multiple microphone elements, better noise suppression and noise reduction performance can be achieved, and the sound clarity and quality can be improved.

[0032] In this embodiment, the front cover frame 500 serves as an external protective layer, which can effectively protect the internal microphone element from the influence of the external environment, such as dust, liquid or physical damage, and at the same time provide a central opening 501 structure connected to the outside. The protective plate 600 serves as a physical barrier, which can effectively protect the internal microphone element from external physical damage, such as collision, friction or other accidental damage. The protective plate 600 can prevent dust, water vapor or other liquids from entering the interior of the microphone element, keeping the element clean and operating normally.

[0033] In this embodiment, the main control circuit board 200 is responsible for controlling and coordinating various parts of the device to ensure the normal operation and function realization of the device. The main control circuit board 200 is the center of the device and is responsible for executing various functions and operations of the device. It contains a processor, a memory, an interface and other electronic components for controlling various aspects of the device, such as data processing, signal transmission, user interaction, etc. The main control circuit board 200 is responsible for processing the data collected by the device, performing calculations, analysis and decision-making, and implementing various algorithms and logics to perform specific operations or control the behavior of the device according to the input data. The main control circuit board 200 can control various functions and operations of the device, such as starting, stopping, adjusting parameters, executing specific tasks, etc., and control the behavior of the device according to preset programs or user input.

[0034] like Figure 6 and Figure 7 As shown, the utility model provides a preferred embodiment of an array microphone device.

[0035] The microphone element is a first microphone element 410 . The microphone array module further includes a microphone array circuit board 300 . The microphone array circuit board 300 is a ring structure. A plurality of the first microphone elements 410 are arranged on the microphone array circuit board 300 .

[0036] The microphone array formed by the first microphone element 410 is usually arranged in a specific geometric shape to achieve specific acoustic effects, such as directional capture, sound source localization, noise suppression, etc. The first microphone element 410 is usually able to achieve more precise sound directionality and can selectively capture sound signals in a specific direction, thereby reducing the impact of background noise.

[0037] In this embodiment, the microphone array circuit board 300 is used to support the circuit board of the microphone array module, including multiple first microphone elements 410, and also includes electronic components such as signal processors, amplifiers, filters, etc., and its main function is to receive, process and transmit sound signals captured from the microphone elements. The connection between the microphone array circuit board 300 and the main control circuit board 200 is usually achieved through a cable or a flexible cable, which connects the electrical signal transmission between the two circuit boards, so that the microphone array module can transmit and communicate data with the main control circuit board 200.

[0038] By connecting the microphone array circuit board 300 and the main control circuit board 200, the sound signal can be transmitted from the microphone array circuit board 300 to the main control circuit board 200 for further processing and analysis. The main control circuit board 200 can execute specific algorithms and logics according to the received sound signals to realize various functions of the device. The main control circuit board 200 can also control the working state of the microphone array module, adjust its sensitivity, directionality and other parameters to adapt to different environments and application scenarios. By connecting with the main control circuit board 200, the microphone array module can realize more advanced sound processing functions.

[0039] In this embodiment, the microphone array circuit board 300 is a ring-shaped structure. On the one hand, the second microphone element 420 can be subsequently arranged in the ring structure to realize a dual array layout. On the other hand, the first microphone element 410 of the microphone array circuit board 300 is arranged into a ring-shaped or quasi-ring-shaped structure to provide omnidirectional sound reception capability, so that the microphone array can capture sound signals from all directions.

[0040] In this embodiment, a positioning annular groove 650 is provided on the inner side of the protective plate 600, and the microphone array circuit board 300 is arranged in the positioning annular groove 650; wherein, a plurality of the sound-transmitting through holes 610 are arranged on the positioning annular groove 650, and the first microphone element 410 of the microphone array circuit board 300 is inserted into the sound-transmitting through hole 610.

[0041] Among them, an annular groove is set on the inner side of the protection plate 600, which is used to fix and position the microphone array circuit board 300. By setting the microphone array circuit board 300 in the positioning annular groove 650, the stable installation and correct position of the circuit board can be ensured.

[0042] The screw passes through the through hole 310 of the microphone array circuit board 300 and is fixed to the screw hole 640 of the protection plate 600 .

[0043] In this embodiment, a plurality of the first microphone elements 410 are evenly distributed on the microphone array circuit board 300. The evenly distributed arrangement means that the first microphone elements 410 are evenly distributed on the microphone array circuit board 300 and surround a center point or a fixed position. The evenly distributed arrangement ensures that the microphone array can effectively capture sound signals in different directions. By evenly distributing the plurality of first microphone elements 410, the microphone array circuit board 300 can achieve a wider sound receiving range, improve the accuracy and omnidirectionality of sound capture, and enable the microphone array to better capture sound signals from different directions.

[0044] like Figure 6 and Figure 7 As shown, the utility model provides a preferred embodiment of an array microphone device.

[0045] The microphone element is a second microphone element 420 . The microphone array module further includes a second microphone element 420 disposed in the middle of a ring shape of the microphone array circuit board 300 . The second microphone element 420 includes a dual microphone head.

[0046] Specifically, the second microphone element 420 is arranged in the middle of the ring of the microphone array circuit board 300, forming a double array layout with the surrounding first microphone elements 410. By arranging the second microphone element 420 in the middle of the ring, the sound capture capability of the microphone array can be increased, so that it can more effectively capture sound signals from different directions.

[0047] Among them, the circular array formed by the first microphone element 410 and the second array formed by the second microphone element 420 form a dual array layout. The dual array can more comprehensively capture sound signals from different directions and enhance the accuracy of sound positioning. Through the coordinated work of multiple microphone elements, the system can accurately capture sound signals and suppress background noise.

[0048] "Dual microphone head" refers to the characteristic of a microphone element with two microphone heads, which enables the microphone to capture sound signals from different directions, providing a wider sound reception range and better sound localization capabilities. Through the dual microphone head design, the microphone can more effectively capture and process sound signals from different directions, thereby improving the accuracy and quality of sound capture.

[0049] In this embodiment, a positioning groove 660 and a screw locking hole 640 are set on the inner side of the protective plate 600, and the array microphone device also includes a positioning plate, and the second microphone element 420 is set in the positioning groove 660. The positioning plate presses the second microphone element 420 and fixes the second microphone element 420 by inserting and fixing the screw locking hole 640 with a screw.

[0050] Among them, the positioning groove 660 is a groove structure used to accurately position the second microphone element 420 in the array microphone device. The screw locking hole 640 is arranged near the positioning groove 660, which is a reinforcing rib structure, including holes for screws used to install and fix the array microphone device. During the assembly process, the positioning plate is used to press the second microphone element 420 to ensure that it is firmly set in the positioning groove 660, and then, the screw is inserted into the screw locking hole 640 on the positioning plate, and the screw is fixed in the screw locking hole 640 to fix the second microphone element 420 in the correct position.

[0051] In this embodiment, a plurality of the second microphone elements 420 are evenly distributed around the protective plate 600. Preferably, three of them are arranged symmetrically around the center.

[0052] like Figure 4 and Figure 5 As shown, the utility model provides a preferred embodiment of an array microphone device.

[0053] The front cover frame 500 includes a light-transmitting window 550 , the protective plate 600 also includes a light-transmitting through hole 680 , and the array microphone device includes an indicator light and a remote control sensor connected to the main control circuit board 200 , the indicator light is aligned with the light-transmitting through hole 680 , and the remote control sensor is aligned with the light-transmitting window 550 .

[0054] Specifically, the indicator light is aligned with the light-transmitting through hole 680, and the light of the indicator light is displayed through the light-transmitting through hole 680, so that the user can see the status or information of the indicator light. The remote control sensor is aligned with the light-transmitting window 550, and the remote control can send signals through the light-transmitting window 550 to interact with the array microphone device.

[0055] The front cover frame 500 also includes a through hole 540 corresponding to the light-transmitting through hole 680 .

[0056] like Figure 8 As shown, the utility model provides a preferred embodiment of an array microphone device.

[0057] The base 100 includes a central raised structure 110, and the end surface of the main control circuit board 200 facing the central raised structure 110 is provided with a plurality of electronic components and an interface unit, the central raised structure 110 includes an interface hole, and the interface unit is arranged at the interface hole; wherein, the interface unit includes at least one of a LAN port 121, a USB port 122, and a LINE port 131.

[0058] There is a central raised structure 110 on the base 100, and a plurality of electronic components and interface units are arranged on the end face of the main control circuit board 200 facing the raised structure, which can accommodate more electronic components and interface units on one hand, and on the other hand, the opening of the interface unit is arranged just on the end face.

[0059] LAN port 121 is a local area network (LAN) interface, which is used to connect the device to a local area network or the Internet. Through LAN port 121, the device can access the network for data transmission, resource sharing or access to the Internet. At the same time, the device can be powered through the network, supporting the 802.3af standard POE protocol. LAN port 121 is usually used to connect a network switch, router or other network device. USB port 122 is a universal serial bus (USB) interface, which supports the UAC standard and is used to connect various external devices, such as computers, conference screens, smart blackboards, etc. The USB port 122 has a hot-swap function, which is convenient for users to connect or disconnect external devices when the device is running. The USB port 122 is usually used for data transmission, charging and control of external devices. The device can be powered through the USB interface, and two-way audio transmission between external devices can be realized. LINE port 131 usually refers to an audio input / output interface, which is used to connect audio devices, such as speakers, microphones, headphones, etc. Through LINE port 131, the device can input or output audio signals to realize audio recording, playback or communication functions. LINE port 131 is usually used for connection between audio devices and transmission of audio signals.

[0060] like Figures 2 to 5 As shown, the utility model provides a preferred embodiment of an array microphone device.

[0061] The front cover frame 500 is provided with a support plate 510 around the middle opening 501, and the protection plate 600 is arranged in the middle opening 501. The support plate 510 is a structure installed around the middle opening 501 of the front cover frame 500 to provide support and stability.

[0062] In this embodiment, the array microphone device further includes a protection net structure disposed outside the protection plate 600, a surrounding gap 601 is formed between the protection plate 600 and the front cover frame 500, and a plug-in plate is disposed at the edge of the protection net structure, and the protection net structure is inserted into the surrounding gap 601 through the plug-in plate. The protection net structure is a structure installed outside the protection plate 600, and is used to further protect the array microphone device. A surrounding gap 601 is formed between the protection plate 600 and the front cover frame 500, and a plug-in plate is disposed at the edge of the protection net structure, and the protection net structure is inserted into the surrounding gap 601 through these plug-in plates, thereby fixing the protection net structure and protecting the array microphone device.

[0063] The screws pass through the through holes 520 of the front cover frame 500 and into the through holes 630 of the protection plate 600 , thereby fixing the front cover frame 500 and the protection plate 600 .

[0064] The screws pass through the main control circuit board 200 and are fixed to the screw holes 530 of the front cover frame 500 , thereby fixing the main control circuit board 200 and the front cover frame 500 .

[0065] The above is only the best embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes or modifications made within the scope of the patent application of the present invention are covered by the present invention.

Claims

1. An array microphone device, characterized in that: The array microphone device comprises a housing, a main control circuit board and a microphone array module, the housing comprises a base, a front cover frame and a protection plate, the front cover frame comprises a middle opening, the housing and the front cover frame are connected to form a receiving cavity, the protection plate is connected to the front cover frame and covers the middle opening, and the main control circuit board and the microphone array module are both arranged in the receiving cavity; Among them, the protection plate includes a sound-transmitting through hole, the main control circuit board is electrically connected to the microphone array module, and the multiple microphone elements on the microphone array module are arranged to be aligned with the corresponding sound-transmitting through holes.

2. The array microphone device according to claim 1, characterized in that: The microphone element is a first microphone element. The microphone array module further includes a microphone array circuit board. The microphone array circuit board is a ring structure. A plurality of the first microphone elements are arranged on the microphone array circuit board.

3. The array microphone device according to claim 2, characterized in that: A positioning annular groove is provided on the inner side of the protection plate, and the microphone array circuit board is arranged in the positioning annular groove; wherein, a plurality of sound-transmitting through holes are arranged on the positioning annular groove, and the first microphone element of the microphone array circuit board is inserted into the sound-transmitting through hole.

4. The array microphone device according to claim 2, characterized in that: The microphone element is a second microphone element. The microphone array module further includes a second microphone element arranged in the middle of the ring of the microphone array circuit board. The second microphone element includes a dual microphone head.

5. The array microphone device according to claim 4, characterized in that: A positioning groove and a screw locking hole are arranged on the inner side of the protection plate. The array microphone device also includes a positioning plate, and the second microphone element is arranged in the positioning groove. The positioning plate presses the second microphone element and fixes the second microphone element by inserting screws into and fixing the screw locking holes.

6. The array microphone device according to claim 4, characterized in that: The plurality of first microphone elements are evenly arranged on the microphone array circuit board, and the plurality of second microphone elements are evenly arranged on the protection board.

7. The array microphone device according to claim 1, characterized in that: The front cover frame includes a light-transmitting window, the protection plate also includes a light-transmitting through hole, the array microphone device includes an indicator light and a remote control sensor connected to the main control circuit board, the indicator light is aligned with the light-transmitting through hole, and the remote control sensor is aligned with the light-transmitting window.

8. The array microphone device according to claim 1, characterized in that: The base includes a central raised structure, and a plurality of electronic components and an interface unit are arranged on the end surface of the main control circuit board facing the central raised structure. The central raised structure includes an interface hole, and the interface unit is arranged at the interface hole; wherein the interface unit includes at least one of a LAN port, a USB port, and a LINE port.

9. The array microphone device according to claim 1, characterized in that: The front cover frame is provided with a supporting plate around the middle opening, and the protection plate is arranged in the middle opening and in close contact with the supporting plate.

10. The array microphone device according to claim 9, characterized in that: The array microphone device also includes a protection net structure arranged outside the protection plate, a surrounding gap is formed between the protection plate and the front cover frame, an inserting plate is arranged at the edge of the protection net structure, and the protection net structure is inserted into the surrounding gap through the inserting plate.

Images