CN218265686U

CN218265686U - Active sound insulation board

Info

Publication number: CN218265686U
Application number: CN202221503887.2U
Authority: CN
Inventors: 宋晓雨; 仲衡; 钱佳鑫; 杨书康
Original assignee: Shanghai Db Electronic Technology Co ltd
Current assignee: Shanghai Db Electronic Technology Co ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2023-01-10
Anticipated expiration: 2032-06-16

Abstract

The utility model relates to a acoustic celotex board technical field specifically discloses an initiative acoustic celotex board, including acoustic celotex board body, feedforward microphone, ANC controller, vibration exciter, control microphone: the vibration exciter is provided with a plurality ofly, a plurality of vibration exciters all are connected with the ANC controller through the cable, ANC controller is used for receiving the noise signal of feedforward microphone, calculate in real time and handle, the signal of making an uproar gives the vibration exciter falls in the output, drive the acoustic celotex board body through the vibration exciter and carry out the initiative excitation, the feedforward microphone is arranged and is close to noise source one side at the acoustic celotex board body, be used for gathering low frequency noise signal, a plurality of control microphones equidistance arrangement is in the acoustic celotex board body one side of keeping away from noise source, a noise reduction effect control for the acoustic celotex board body. The active noise reduction sound insulation board of this scheme design on original passive reduction physics separation medium-high frequency noise basis, further eliminates the propagation of the low frequency noise of sound insulation board for the sound insulation board range of application is more extensive.

Description

Active sound insulation board

Technical Field

The utility model relates to a sound-proof board technical field specifically is an initiative sound-proof board.

Background

The existing noise reduction technology of the sound insulation board mostly realizes the effect of blocking medium-high frequency noise through physical sound insulation materials such as wood boards, density boards, sponges, fiber boards, damping materials and the like, but when the noise is faced to low-frequency noise below 200HZ, the sound insulation board is very limited to control the low-frequency noise due to the characteristic of strong penetrating power, and if the sound insulation board needs to achieve a better noise control effect, a large area of sound insulation boards with high-quality sound insulation materials are needed, and the sound insulation board is matched with professional design and installation to realize, so that the cost is greatly increased.

In some prior arts, speakers are directly arranged on wooden doors to serve as actuators of an ANC active noise reduction system, and although certain indoor low-frequency noise control can be achieved to replace sound insulation boards, the products cannot be produced in mass production in many scenes due to the fact that the speakers are difficult to install or difficult to install, and the products are popularized and used.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an initiative acoustic celotex board to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an active acoustic panel comprising an acoustic panel body, a feedforward microphone, an ANC controller, a vibration exciter, a monitoring microphone: the system comprises a plurality of vibration exciters, an ANC controller, a feedforward microphone, a sound insulation board body and a plurality of vibration exciters, wherein the plurality of vibration exciters are connected with the ANC controller through cables; the feedforward microphone is arranged on one side, close to a noise source, of the sound insulation board body and used for collecting low-frequency noise signals; the monitoring microphones are arranged on one side of the sound insulation board body, which is far away from a noise source, at equal intervals and are used for monitoring the noise reduction effect of the sound insulation board body; the mounting cavity matched with the vibration exciter structure is formed in the position, corresponding to the vibration exciter, of the sound insulation board body, and the plurality of vibration exciters are mounted in the corresponding mounting cavities.

Preferably, a signal input end of the ANC controller is connected with a signal output end of the monitoring microphone, when the noise control of the sound insulation board body exceeds a tolerance range, the ANC controller is used for feeding back a state signal to the ANC controller in real time, and the ANC controller performs self-adaptive adjustment according to the feedback signal to realize stable control of the sound insulation board body on low-frequency noise.

Preferably, a signal output end of the ANC controller is connected with a signal input end of a vibration exciter, and the vibration exciter is used for receiving a vibration signal output by the ANC controller, and enabling the sound insulation board body to generate noise reduction sound waves with the same phase and opposite amplitudes, and the noise reduction sound waves and the original low-frequency noise are mutually offset, so that noise reduction control of the low-frequency noise is achieved.

Preferably, the acoustic celotex board body includes left shrouding, right shrouding, sound-proof material layer and side shrouding, and the side shrouding sets up in the avris department all around of left shrouding, right shrouding, the left and right sides of side shrouding respectively with the inside wall fixed connection of left shrouding, right shrouding, the sound-proof material layer sets up in the cavity that left shrouding, right shrouding and side shrouding formed.

Preferably, the installation cavity is arranged on the sound insulation material layer and connected with the inner side wall of the right sealing plate.

Preferably, the ANC controller is fixed on the right sealing plate and is also electrically connected with a control switch.

Preferably, the sound insulation material layer is close to and offers the wiring passageway of being convenient for the cable wiring on the one side of right shrouding, and the cable is arranged in wiring passageway to compress tightly fixedly through right shrouding.

Preferably, a wire pressing groove is formed in the position, corresponding to the wiring channel, of the right sealing plate, and the cross sections of the wire pressing groove and the wiring channel are both semicircular structures.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model provides a pair of initiative acoustic celotex board adopts vibration exciter and acoustic celotex board body to unite two into one's mode as the executor of ANC system, sends through vibration exciter excitation acoustic celotex board body and falls the sound wave of making an uproar, replaces the speaker.

2. The utility model provides a pair of initiative acoustic celotex board, the most sealed inside the acoustic celotex board body of the relevant part of this vibration exciter, adopt the modular overall arrangement, ensure the whole aesthetic property of acoustic celotex board body.

3. The utility model provides a pair of initiative acoustic celotex board, this acoustic celotex board body are through the closure of installation switch, come the active control ANC to fall the function of making an uproar and open and close, change the tradition and rely on the syllable-dividing single mode of physical material, improve the initiative noise reduction performance of acoustic celotex board body.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a cross-sectional view of the cable wiring of the present invention.

In the figure: 1. a baffle body; 11. a left closure plate; 12. a right seal plate; 13. a layer of sound insulating material; 14. side edge sealing plates; 2. a feedforward microphone; 3. an ANC controller; 4. a vibration exciter; 5. a monitoring microphone; 6. a noise source; 7. a mounting cavity; 8. a control switch; 9. a wiring channel; 10. and (4) pressing a wire groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Referring to fig. 1-3, the present invention provides a technical solution: an active acoustic baffle, comprising an acoustic baffle body 1, a feedforward microphone 2, an ANC controller 3, a vibration exciter 4, a monitoring microphone 5: the multiple vibration exciters 4 are arranged, the multiple vibration exciters 4 are all connected with the ANC controller 3 through cables, the ANC controller 3 is used for receiving noise signals of the feedforward microphone 2, performing real-time calculation processing, outputting noise reduction signals to the vibration exciters 4, and driving the sound insulation board body 1 to actively excite the vibration exciters 4; the feedforward microphone 2 is arranged on one side, close to the noise source 6, of the sound insulation board body 1 and used for collecting low-frequency noise signals; the monitoring microphones 5 are arranged in a plurality, and the monitoring microphones 5 are arranged at equal intervals on one side of the sound insulation board body 1 away from the noise source 6 and are used for monitoring the noise reduction effect of the sound insulation board body 1; the position that division board body 1 corresponds vibration exciter 4 is seted up with installation cavity 7 of 4 structure adaptations of vibration exciter, and a plurality of vibration exciters 4 are all installed in the installation cavity 7 that corresponds.

Furthermore, a signal input end of the ANC controller 3 is connected with a signal output end of the monitoring microphone 5, when the noise control of the sound insulation board body 1 exceeds a tolerance range, the ANC controller 3 is used for feeding back a state signal to the ANC controller 3 in real time, the ANC controller 3 carries out self-adaptive adjustment according to the feedback signal, and stable control of the sound insulation board body 1 on low-frequency noise is achieved.

Furthermore, a signal output end of the ANC controller 3 is connected with a signal input end of a vibration exciter 4, and the vibration exciter 4 is used for receiving a vibration signal output by the ANC controller 3, and enabling the sound insulation board body 1 to generate noise reduction sound waves with the same phase and the opposite amplitude, and the noise reduction sound waves and the original low-frequency noise are mutually offset, so that noise reduction control of the low-frequency noise is achieved.

Further, acoustic celotex board body 1 includes left shrouding 11, right shrouding 12, sound-proof material layer 13 and side shrouding 14, and side shrouding 14 sets up in the avris department all around of left shrouding 11, right shrouding 12, and the left and right sides of side shrouding 14 respectively with the inside wall fixed connection of left shrouding 11, right shrouding 12, sound-proof material layer 13 sets up in the cavity that left shrouding 11, right shrouding 12 and side shrouding 14 formed.

Further, the mounting cavity 7 is opened on the sound-insulating material layer 13 and connected to the inner side wall of the right closing plate 12.

Further, ANC controller 3 is fixed on right shrouding 12, and ANC controller 3 still electric connection has control switch.

Furthermore, a wiring channel 9 convenient for wiring cables is formed in one surface, close to the right sealing plate 12, of the sound insulation material layer 13, and the cables are arranged in the wiring channel 9 and are pressed and fixed through the right sealing plate 12.

Furthermore, a wire pressing groove 10 is formed in the position, corresponding to the wiring channel 9, of the right sealing plate 12, and the cross sections of the wire pressing groove 10 and the wiring channel 9 are both semicircular structures.

The working principle is as follows: this scheme unites two into one vibration exciter 4 and acoustic celotex board body 1 according to the characteristics of current acoustic celotex board structure, through vibration exciter 4 initiative excitation acoustic celotex board body 1, and then reach the equivalent effect with the speaker to replace the use of speaker.

In order to ensure the integrity of the sound insulation board body 1, the vibration exciter 4 is embedded into the installation cavity 7 on the sound insulation board body 1 during actual installation, the cable is arranged in the wiring channel 9, the cable and the vibration exciter 4 are hermetically installed through the right sealing plate 12, and the sealing property and the attractiveness of the sound insulation board body 1 are ensured; in order to realize the working current input of the ANC system, a control switch 8 electrically connected with the ANC controller 3 is arranged, and the on-off work of the current is controlled by closing the control switch 8; when the environment is closed, for example, when the indoor door and window is closed, the ANC system of the sound insulation board body 1 is opened by opening the switch to work, and when the sound insulation board is actually used, an ANC system fault display system can be selectively installed on the surface of the outer layer of the sound insulation board body 1, and the working state of the system can be displayed through a fault lamp.

In actual use, the feedforward microphone 2 is used for collecting a low-frequency noise signal; the ANC controller 3 is used for receiving the noise signal of the feedforward microphone 2, performing real-time calculation processing and outputting a noise reduction signal to the vibration exciter 4; the vibration exciter 4 is used for receiving a vibration signal output by the ANC controller 3 and driving the sound insulation board body 1 to actively excite vibration, so that the sound insulation board body 1 generates noise reduction sound waves with the same phase and opposite amplitude, and the noise reduction sound waves are just counteracted with original low-frequency noise, and therefore noise reduction control of the low-frequency noise is achieved;

the monitoring microphones 5 are uniformly arranged on one side, far away from a noise source 6, of the sound insulation board body 1 and used for monitoring the noise reduction effect of the sound insulation board body 1, when noise control exceeds a tolerance range, a state signal is fed back to the ANC controller 3 in real time, the ANC controller 3 carries out self-adaptive adjustment according to the feedback signal, and stable control of the sound insulation board body 1 on low-frequency noise is achieved.

It is worth noting that: the whole device realizes control to the device through the controller, and the controller is common equipment and belongs to the existing mature technology, and the electrical connection relation and the specific circuit structure of the controller are not repeated herein.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An active acoustic panel, comprising: the acoustic panel vibration isolation device comprises an acoustic panel body (1), a feedforward microphone (2), an ANC controller (3), a vibration exciter (4) and a monitoring microphone (5): the vibration exciters (4) are arranged in plurality, mounting cavities (7) matched with the vibration exciters (4) in structure are formed in the positions, corresponding to the vibration exciters (4), of the sound insulation board body (1), and the vibration exciters (4) are all mounted in the corresponding mounting cavities (7); the signal input end of the ANC controller (3) is connected with the signal output ends of the monitoring microphone (5) and the feedforward microphone (2), the signal output end of the ANC controller (3) is connected with the signal input end of the vibration exciter (4), the ANC controller (3) is used for receiving a noise signal of the feedforward microphone (2) and outputting a noise reduction signal to the vibration exciter (4), and the vibration exciter (4) is used for driving the sound insulation board body (1) to actively vibrate; the feedforward microphone (2) is arranged on one side, close to a noise source (6), of the sound insulation board body (1) and used for collecting low-frequency noise signals; the monitoring microphones (5) are arranged in a plurality of equal intervals on one side of the sound insulation board body (1) far away from the noise source (6) and used for monitoring the noise reduction effect of the sound insulation board body (1).

2. An active acoustic panel in accordance with claim 1, wherein: septum housing body (1) is including left shrouding (11), right shrouding (12), sound-proof material layer (13) and side shrouding (14), and side shrouding (14) set up in the avris department all around of left shrouding (11), right shrouding (12), the left and right sides of side shrouding (14) respectively with the inside wall fixed connection of left shrouding (11), right shrouding (12), sound-proof material layer (13) set up in the cavity of left shrouding (11), right shrouding (12) and side shrouding (14) formation.

3. An active acoustic panel in accordance with claim 1, wherein: the mounting cavity (7) is formed in the sound insulation material layer (13) and connected with the inner side wall of the right sealing plate (12).

4. An active acoustic panel in accordance with claim 1, wherein: ANC controller (3) are fixed on right shrouding (12), and ANC controller (3) still electric connection has control switch (8).

5. An active acoustic panel in accordance with claim 2, wherein: and a wiring channel (9) convenient for cable wiring is formed in one surface, close to the right sealing plate (12), of the sound insulation material layer (13), and cables are arranged in the wiring channel (9) and are pressed and fixed through the right sealing plate (12).

6. An active acoustic panel according to claim 5, characterized in that: and a wire pressing groove (10) is formed in the position, corresponding to the wiring channel (9), of the right sealing plate (12), and the cross sections of the wire pressing groove (10) and the wiring channel (9) are both semicircular structures.