Active noise reduction device for server

Abstract

The utility model discloses an active noise reduction device for a server. The active noise reduction device comprises an acquisition microphone, a multi-microphone array group, an audio processing center module and a reverse sound wave loudspeaker which are arranged in the server, wherein the acquisition microphone is connected with the audio processing center module, the multi-microphone array group is connected with the audio processing center module, and the audio processing center module is connected with the reverse sound wave loudspeaker; the multi-microphone array group comprises a plurality of microphones which are arranged on the same straight line according to a preset interval; and the front side of a pickup port of one microphone in the multi-microphone array group faces a fan in the server. According to the active noise reduction device for the server provided by the embodiment of the utility model, each microphone in the multi-microphone array group is used for capturing and collecting the noise generated by each fan in the server in a one-to-one manner, so that the noise reduction effect is improved, and the whole noise reduction device is arranged in the server, so that the active noise reduction of the server is realized.

Description

Technical Field

[0001] The utility model relates to the field of server noise reduction, in particular to an active server noise reduction device. Background Art

[0002] With the continuous change of user requirements and the continuous innovation and development of technology, servers have more and more functions. Servers need to support various CPUs with different functions, and the power consumption is also increasing, thus having higher requirements for heat dissipation. In order to fully meet the heat dissipation requirements of the server, the number of built-in fans in the server increases and the fan speed increases. As a result, the noise generated by the server during operation increases. The increase in noise affects the use of the server to a certain extent and also has more stringent requirements for the operating environment of the server. Therefore, it is necessary to implement appropriate noise reduction measures to improve the user experience of the server.

[0003] At present, most of the noise reduction methods adopted by servers on the market are physical structure noise reduction, mainly by changing the box structure, designing sound reduction structures, or adding noise reduction and sound absorption materials for noise reduction, which belongs to passive noise reduction. Additionally, noise reduction is also achieved by controlling the power consumption of the server on the market. When the power consumption of the server reaches a certain threshold, an alarm is issued, and then the power of the server is adjusted to maintain the fan running within a specific speed range and limit the noise level within a certain range. Content of the Utility Model

[0004] The embodiment of the utility model provides an active server noise reduction device, which optimizes the noise acquisition accuracy and adopts active noise reduction to improve the noise reduction effect inside the server.

[0005] To solve the above technical problems, the embodiment of the utility model provides an active server noise reduction device, including: a multi-microphone array group built in the server, an audio processing center module, and a reverse sound wave loudspeaker;

[0006] Wherein, the multi-microphone array group is connected to the audio processing center module, and the audio processing center module is connected to the reverse sound wave loudspeaker;

[0007] The multi-microphone array group includes multiple microphones arranged in a straight line at a preset interval;

[0008] The sound pickup port of each microphone in the multi-microphone array group faces directly towards one fan in the fan group, and the fan group is built in the server.

[0009] Implementing the embodiments of the present utility model, active noise reduction is adopted. A server active noise reduction device composed of a multi-microphone array group, an audio processing center module, and a reverse sound wave speaker is built into the server to form an integrated intelligent control system by combining the noise reduction device and the server. In addition, multiple microphones in the multi-microphone array group are arranged in a straight line at a preset interval, and the sound pickup ports of each microphone in the multi-microphone array group are all facing directly towards a fan in the server, so as to specifically capture and collect the noise sound wave information emitted by each fan. Then, it is analyzed and processed by the audio processing center module, and a corresponding reverse sound wave is output through the reverse sound wave speaker, so that when the reverse sound wave and the noise sound wave meet in the air, they will cancel each other out, thereby improving the noise reduction effect.

[0010] As a preferred solution, the audio processing center module includes a sound wave analysis unit and an identification control unit connected to each other;

[0011] Among them, the sound wave analysis unit is connected to the multi-microphone array group, and the identification control unit is connected to the reverse sound wave speaker.

[0012] Implementing the preferred solution of the embodiments of the present utility model, the sound wave analysis unit connected to the multi-microphone array group is used to perform sound wave analysis on the signals collected by the multi-microphone array group to obtain the sound wave signals of the noise. Then, through the identification control unit connected to the sound wave analysis unit, the reverse sound wave with a phase opposite to that of the noise is identified for the sound wave signals of the noise, and the reverse sound wave speaker connected to the identification control unit is controlled to output the reverse sound wave, thereby realizing the neutralization and cancellation of the noise.

[0013] As a preferred solution, the server active noise reduction device further includes a collection microphone;

[0014] Among them, the collection microphone is connected to the sound wave analysis unit, and the collection microphone is arranged around the components in the server.

[0015] Implementing the preferred solution of the embodiments of the present utility model, a collection microphone is arranged around the components in the server to accurately collect the noise generated by the components in the server, and the collected signal is transmitted to the sound wave analysis unit connected to the collection microphone, so that the sound wave analysis unit comprehensively performs noise sound wave analysis on the signals collected by the collection microphone and the multi-microphone array group. Then, through the identification control unit, the reverse sound wave speaker is controlled to output the reverse sound wave with a phase opposite to that of the noise sound wave, thereby reducing the influence of the noise generated by the fan group and other components in the server on the operation of the server.

[0016] As a preferred solution, the active noise reduction device for a server further includes a PCB board fixing bracket; the PCB board fixing bracket is fixed to the box body of the server by screws, and the audio processing center module, the acquisition microphone, and the anti - sound wave speaker are fixed to the PCB board fixing bracket.

[0017] Implementing the preferred solution of the embodiment of the present utility model, the PCB board fixing bracket is stably fixed to the box body of the server by screws, and the audio processing center module, the acquisition microphone, and the anti - sound wave speaker are fixed to the PCB board fixing bracket, avoiding the dropping of devices such as the audio processing center module, the acquisition microphone, and the anti - sound wave speaker during the operation or handling of the server, which may affect the overall noise reduction effect.

[0018] As a preferred solution, the active noise reduction device for a server further includes a microphone array group fixing bracket; the microphone array group fixing bracket is fixed to the box body of the server by screws, and the multi - microphone array group is fixed to the microphone array group fixing bracket.

[0019] Implementing the preferred solution of the embodiment of the present utility model, the microphone array group fixing bracket is stably fixed to the box body of the server by screws, and the multi - microphone array group is fixed to the microphone array group fixing bracket, avoiding the dropping of the multi - microphone array group during the operation or handling of the server, which may affect the overall noise reduction effect. Description of the Drawings

[0020] Figure 1 : is a schematic structural diagram of an active noise reduction device for a server provided by Embodiment 1 of the present utility model;

[0021] Figure 2 : is a schematic structural diagram of an active noise reduction device for a server provided by Embodiment 2 of the present utility model. Detailed Embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0023] Embodiment 1:

[0024] Please refer to Figure 1 , which is a schematic structural diagram of an active noise reduction device for a server provided by an embodiment of the present utility model. The device includes: a multi - microphone array group 6, an audio processing center module 1, and an anti - sound wave speaker 2 built in the server.

[0025] Among them, the multi-microphone array group 6 is connected to the audio processing center module 1, and the audio processing center module 1 is connected to the reverse sound wave speaker 2; the multi-microphone array group 6 includes a plurality of microphones arranged in a straight line at a preset interval; the sound pickup ports of each microphone in the multi-microphone array group 6 are all facing directly towards one of the fans in the fan group 5, and the fan group 5 is built into the server.

[0026] In this embodiment, during the operation of the server, in order to dissipate heat in time, the fan group 5 built into the server rotates rapidly, generating ambient noise, and the noise sound waves propagate in the server cabinet 4. The multi-microphone array group 6, as the noise collection device in the noise reduction device, captures and collects the noise inside the server cabinet 4, mainly collects the ambient noise generated when the fan group 5 in the server operates, and then the multi-microphone array group 6 transmits the collected noise signal to the audio processing center module 1. The audio processing center module 1 performs power amplification operations on the received noise signal, analyzes the relevant information of the noise sound waves, and outputs a control instruction to the reverse sound wave speaker 2 based on the analysis and processing results, so that the reverse sound wave speaker 2 outputs a reverse sound wave with a phase opposite to that of the noise. Through the interference effect of the sound waves, when the reverse sound wave meets the noise sound wave, these two anti-phase sound waves cancel each other out, thereby neutralizing and canceling the noise and achieving active noise reduction of the server. Among them, the relevant information of the noise sound waves includes, but is not limited to, amplitude, frequency, phase, and wavelength.

[0027] It should be noted that the multiple microphones in the multi-microphone array group 6 are arranged using a linear array scheme. Specifically, they are arranged in a straight line at a preset interval. Mainly by calculating and analyzing the signal differences between different microphones, the position of the sound source is identified and the target signal is extracted, so as to determine the arrangement positions of the microphones in the multi-microphone array group 6, so that the sound pickup port of each microphone in the multi-microphone array group 6 faces directly towards a sound source.

[0028] In a preferred embodiment, the audio processing center module 1 includes a sound wave analysis unit and an identification and control unit connected to each other; among them, the sound wave analysis unit is connected to the multi-microphone array group 6, and the identification and control unit is connected to the reverse sound wave speaker 2.

[0029] It should be noted that the sound wave analysis unit is used to analyze the noise signal collected and sent by the multi-microphone array group 6, obtain the noise sound wave information, and transmit the noise sound wave information to the identification and control unit; the identification and control unit is used to identify the noise sound wave information, obtain the control instruction corresponding to the noise sound wave information, and transmit the control instruction to the reverse sound wave speaker 2, so that the reverse sound wave speaker 2 outputs the corresponding reverse sound wave.

[0030] In this embodiment, the audio processing center module 1 can also store the recognized noise information (such as amplitude, frequency, phase, and wavelength). When a certain noise signal is received, the audio processing center module 1 analyzes and identifies whether the noise sound wave information corresponding to the current noise signal already exists in the database; if so, the audio processing center module 1 automatically executes the corresponding preset operation, that is, outputs a corresponding control instruction to the reverse sound wave speaker 2, so that the reverse sound wave speaker 2 executes the control instruction and outputs a reverse sound wave with a phase opposite to that of the current noise signal to neutralize and cancel the current noise signal; if not, the audio processing center module 1 further analyzes the current noise signal to establish new noise sound wave information and stores it in the database of the audio processing center module 1, and at the same time outputs a control instruction corresponding to the new noise sound wave information to the reverse sound wave speaker 2, so that the reverse sound wave speaker 2 executes the control instruction and outputs a reverse sound wave with a phase opposite to that of the current noise signal to neutralize and cancel the current noise signal. Through the above intelligent operation, unnecessary repeated sound wave analysis and recognition processing operations are avoided, thereby reducing the power consumption of the server.

[0031] In a preferred embodiment, a server active noise reduction device provided by an embodiment of the present invention further includes a PCB board fixing bracket 3; the PCB board fixing bracket 3 is fixed on the server cabinet 4 by screws, and the audio processing center module 1, the acquisition microphone 8, and the reverse sound wave speaker 2 are fixed on the PCB board fixing bracket 3.

[0032] In a preferred embodiment, a server active noise reduction device provided by an embodiment of the present invention further includes a microphone array group fixing bracket 7; the microphone array group fixing bracket 7 is fixed on the server cabinet 4 by screws, and the multi-microphone array group 6 is fixed on the microphone array group fixing bracket 7.

[0033] Embodiment 2:

[0034] Please refer to Figure 2 , in a preferred embodiment, a server active noise reduction device provided by an embodiment of the present invention, in addition to the multi-microphone array group 6, the audio processing center module 1, the reverse sound wave speaker 2, and the sound wave analysis unit and the recognition control unit connected in the audio processing center module 1 described in Embodiment 1, further includes an acquisition microphone 8; wherein, the acquisition microphone 8 is connected to the sound wave analysis unit, and the acquisition microphone 8 is arranged around the components in the server.

[0035] During the operation of the server, in addition to the fan group 5 for heat dissipation, there are also some components operating inside the server. To further achieve noise reduction and improve the noise reduction effect, in the embodiment of the present utility model, a collection microphone 8 is also arranged around the components inside the server to capture the noise generated during the operation of the components. The collection microphone 8 then transmits the collected noise signal to the audio processing center module 1. Then, the audio processing center module 1 performs power amplification operation on the received noise signal, analyzes the relevant information of the noise sound wave, and outputs a control instruction to the reverse sound wave speaker 2 based on the analysis and processing result, so that the reverse sound wave speaker 2 outputs a reverse sound wave with a phase opposite to that of the noise, thereby neutralizing and canceling the noise and further achieving active noise reduction of the server. Among them, the relevant information of the noise sound wave includes, but is not limited to, amplitude, frequency, phase, and wavelength.

[0036] It should be noted that an active noise reduction device for a server provided in the embodiment of the present utility model further includes a PCB board fixing frame 3; the PCB board fixing frame 3 is fixed on the server cabinet 4 by screws, and the audio processing center module 1, the collection microphone 8, and the reverse sound wave speaker 2 are fixed on the PCB board fixing frame 3. In a preferred embodiment, an active noise reduction device for a server provided in the embodiment of the present utility model further includes a microphone array group fixing frame 7; the microphone array group fixing frame 7 is fixed on the server cabinet 4 by screws, and the multi-microphone array group 6 is fixed on the microphone array group fixing frame 7. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the device described in Embodiment 2 can refer to the corresponding process in Embodiment 1 and will not be elaborated here.

[0037] Compared with the prior art, the embodiment of the present utility model has the following beneficial effects:

[0038] The present utility model provides an active noise reduction device for a server. By adopting active noise reduction, an active noise reduction device for a server composed of a multi-microphone array group, an audio processing center module, and a reverse sound wave speaker is built into the server to form an integrated intelligent control system combined with a noise reduction device and the server. In addition, multiple microphones in the multi-microphone array group are arranged on the same straight line at a preset interval, and the sound pickup ports of each microphone in the multi-microphone array group are all facing a fan inside the server directly, so as to specifically capture and collect the noise sound wave information emitted by each fan. Then, it is analyzed and processed by the audio processing center module, and a corresponding reverse sound wave is output through the reverse sound wave speaker, so that the reverse sound wave and the noise sound wave will cancel each other out when they meet in the air, thereby improving the noise reduction effect.

[0039] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above description is only for the specific embodiments of the present utility model and is not used to limit the protection scope of the present utility model. In particular, it is pointed out that for those skilled in the art, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A server active noise reduction device, characterized in that: include: A multi-microphone array group, an audio processing center module, and a reverse sound wave speaker built into the server; Wherein, the multi-microphone array group is connected to the audio processing center module, and the audio processing center module is connected to the reverse sound wave speaker; The multi-microphone array group includes a plurality of microphones arranged on the same straight line at a preset interval; The sound pickup port of each microphone in the multi-microphone array group faces a fan in a fan group, and the fan group is built in the server.

2. The server active noise reduction device according to claim 1, characterized in that: The audio processing center module includes a sound wave analysis unit and a recognition control unit connected to each other; Wherein, the sound wave analysis unit is connected to the multi-microphone array group, and the recognition control unit is connected to the reverse sound wave speaker.

3. The server active noise reduction device according to claim 2, characterized in that: It also includes a collection microphone; Wherein, the collection microphone is connected to the sound wave analysis unit, and the collection microphone is arranged around the components in the server.

4. The server active noise reduction device according to claim 3, characterized in that: It also includes a PCB board fixing frame; the PCB board fixing frame is fixed to the box body of the server by screws, and the audio processing center module, the collection microphone and the reverse sound wave speaker are fixed on the PCB board fixing frame.

5. The server active noise reduction device according to claim 1, characterized in that: It also includes a microphone array group fixing frame; the microphone array group fixing frame is fixed to the box body of the server by screws, and the multi-microphone array group is fixed on the microphone array group fixing frame.

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