A power amplifier device and a power amplifier system

Abstract

The utility model provides a kind of power amplifier device and power amplifier system, it is related to broadcast equipment field, the device includes: cabinet, main control board, at least one first power amplifier module and at least one second power amplifier module;Multiple slide rails are provided in cabinet, each slide rail is arranged in parallel, each slide rail is respectively used to and first power amplifier module or second power amplifier module sliding connection;Main control board is set in cabinet;Each first power amplifier module and each second power amplifier module are respectively provided with card interface, each card interface is respectively electrically connected with main control board.This application improves the space utilization of power amplifier device, so that the integration of power amplifier device is higher, reduces the volume of power amplifier device.

Description

Technical Field

[0001] This utility model relates to the field of broadcasting equipment, and in particular to a power amplifier device and a power amplifier system. Background Technology

[0002] Currently, there are various types of power amplifiers on the market, such as analog power amplifiers, digital power amplifiers, and wireless power amplifiers. Each type of power amplifier has its specific technical characteristics and application scenarios. Power amplifiers produced by different manufacturers may differ in technical standards, interface specifications, and performance parameters, requiring users to consider multiple factors when selecting and using them. To adapt to various different usage needs, existing power amplifier devices often install multiple power amplifiers, resulting in low integration and large size. Utility Model Content

[0003] In view of the above, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a power amplifier device and power amplifier system. This utility model provides the following technical solution:

[0004] In a first aspect, this application provides a power amplifier device, comprising: a cabinet, a main control board, at least one first power amplifier module and at least one second power amplifier module;

[0005] The cabinet is equipped with multiple slide rails, which are arranged in parallel and are used to slide with the first power amplifier module or the second power amplifier module respectively.

[0006] The main control board is located inside the cabinet;

[0007] Each of the first power amplifier modules and each of the second power amplifier modules is provided with a card slot interface, and each card slot interface is electrically connected to the main control board.

[0008] In one embodiment, the main control board is provided with multiple card slots, each of which is respectively matched with the card interface on the first power amplifier module or the second power amplifier module.

[0009] In one embodiment, the first power amplifier module includes a decoder board and a first power amplifier unit, wherein the decoder board is electrically connected to the audio device and the first power amplifier unit respectively; and the first power amplifier unit is electrically connected to the main control board through the card slot interface.

[0010] In one embodiment, the second power amplifier module includes a second power amplifier unit, which is electrically connected to the main control board via the card interface.

[0011] In one embodiment, the second power amplifier module further includes a relay, which is electrically connected to the second power amplifier unit.

[0012] In one embodiment, the second power amplifier module further includes a surge arrester, which is electrically connected to the second power amplifier unit.

[0013] In one embodiment, the power amplifier device further includes an energy storage battery, which is disposed in the cabinet and electrically connected to the main control board, each of the first power amplifier modules and each of the second power amplifier modules.

[0014] In one embodiment, the top of the cabinet is provided with a ventilation opening.

[0015] In one embodiment, a cooling fan is provided inside the cabinet.

[0016] Secondly, this application provides a power amplifier system, including: an audio device and the power amplifier device described in the first aspect, wherein the audio device is electrically connected to the power amplifier device.

[0017] The power amplifier device and system provided in this application include: a cabinet, a main control board, at least one first power amplifier module, and at least one second power amplifier module; the cabinet is provided with multiple slide rails arranged in parallel, each slide rail being used for sliding connection with either the first or second power amplifier module; the main control board is disposed within the cabinet; each of the first and second power amplifier modules is provided with a card slot interface, each of the card slot interfaces being electrically connected to the main control board. This application connects the power amplifier and the main control board through a card-connection method, avoiding complex wiring between modules, improving the space utilization of the power amplifier device, resulting in higher integration of the power amplifier device, and reducing the size of the power amplifier device.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the power amplifier device provided in an embodiment of this application is shown;

[0021] Figure 2 A front view of the power amplifier device provided in an embodiment of this application is shown;

[0022] Figure 3A schematic diagram of the internal structure of a power amplifier device provided in an embodiment of this application is shown;

[0023] Figure 4 This paper shows another structural schematic diagram of the power amplifier device provided in an embodiment of this application;

[0024] Figure 5 A schematic diagram of the power amplifier system provided in an embodiment of this application is shown.

[0025] Explanation of key component symbols:

[0026] 100 - Power amplifier device; 110 - Main control board; 120 - First power amplifier module; 130 - Second power amplifier module; 140 - Cabinet; 141 - Slide rail; 500 - Power amplifier system; 510 - Audio equipment. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0030] Example 1

[0031] The power amplifier products currently available on the market mainly include analog power amplifiers, digital power amplifiers, and wireless power amplifiers. Analog power amplifiers are power amplifiers that directly amplify analog audio signals. Digital power amplifiers work by first converting analog audio signals into digital signals, then processing and amplifying the digital signals, and finally converting the amplified digital signals back into analog signals. Wireless power amplifiers mainly consist of a transmitter and a receiver. The transmitter amplifies the input DC power through a power amplifier, then converts it into radio waves by a frequency generator, and transmits it through a wireless antenna. The receiver receives the radio waves, converts them into electrical energy through an antenna, and then rectifies them into DC power to supply the load. It is understandable that different types of power amplifier products have different technical characteristics and application scenarios. In public address systems, to adapt to various usage needs, power amplifier devices used for public address systems often have multiple amplifiers installed. It is understandable that the more amplifiers there are, the more complex the wiring becomes, and the larger the device size. Therefore, please refer to... Figure 1 , Figure 2 and Figure 3 This application provides a power amplifier device 100, including: a main control board 110, at least one first power amplifier module 120, at least one second power amplifier module 130, and a cabinet 140; the cabinet 140 is provided with multiple slide rails 141, which are arranged in parallel and are respectively used to slide with the first power amplifier module 120 or the second power amplifier module 130; the main control board 110 is disposed in the cabinet 140; each of the first power amplifier module 120 and each of the second power amplifier modules 130 is provided with a card slot interface, and each card slot interface is electrically connected to the main control board 110.

[0032] Figure 2 A front view of the power amplifier device 100 provided in an embodiment of this application is shown. Figure 3 A schematic diagram of the internal structure of the power amplifier device 100 provided in an embodiment of this application is shown. In this embodiment, each slide rail 141 is disposed on the inner side of the bottom surface of the cabinet 140 and is used to slide and connect with the first power amplifier module 120 or the second power amplifier module 130. It can be understood that each first power amplifier module 120 and each second power amplifier module 130 are slidably connected to the slide rail 141, and each first power amplifier module 120 or each second power amplifier module 130 is slidably sent into the cabinet 140 through the slide rail 141.

[0033] The main control board 110 is located on the inner side of the rear panel of the cabinet 140. The first power amplifier module 120 or the second power amplifier module 130 is slid into the cabinet 140 via the slide rail 141 and electrically connected to the main control board 110 through the corresponding card slots. It can be understood that the main control board 110 has multiple card slots, each corresponding to a card slot on the first power amplifier module 120 and the second power amplifier module 130.

[0034] In one embodiment, the main control board 110 is provided with a plurality of card slots, each of which is respectively engaged with the card interface on the first power amplifier module 120 or the second power amplifier module 130.

[0035] In this embodiment, the number of slots on the main control board 110 is the same as the sum of the number of the first power amplifier module 120 and the second power amplifier module 130. It can be understood that each slot is used for electrical connection with either the first power amplifier module 120 or the second power amplifier module 130. When the first power amplifier module 120 or the second power amplifier module 130 is slid into the cabinet 140 via the slide rail 141, it engages with the slot on the main control board 110 through the corresponding card insertion structure, thus achieving electrical connection with the main control board 110.

[0036] It should be noted that this snap-fit ​​method avoids the wiring between the main control board 110 and the first power amplifier module 120 and the second power amplifier module 130, thereby improving the space utilization of the cabinet 140 and reducing the size of the power amplifier device 100.

[0037] In one embodiment, the first power amplifier module 120 includes a decoding board and a first power amplifier unit, wherein the decoding board is electrically connected to the audio device and the first power amplifier unit respectively; and the first power amplifier unit is electrically connected to the main control board 110 through the card interface.

[0038] In this embodiment, four first power amplifier modules 120 and one second power amplifier module 130 are used as examples. Please refer to [link to relevant documentation]. Figure 4 , Figure 4 A schematic diagram of the power amplifier device 100 provided in an embodiment of this application is shown. Each first power amplifier module 120 includes a decoding board and a first power amplifier unit, wherein the decoding board is used to acquire and decode audio signals from external audio devices, and send the decoded audio signals to the first power amplifier unit, which amplifies and outputs them.

[0039] It is understandable that the first power amplifier unit includes a power amplifier, and the specific model can be selected according to the actual situation, without any restrictions here.

[0040] In one embodiment, the second power amplifier module 130 includes a second power amplifier unit, which is electrically connected to the main control board 110 via the card interface.

[0041] In this embodiment, please refer again. Figure 4The main control board 110 continuously monitors the output signal status of each first power amplifier unit, such as voltage and current parameters. When the output signal of the first power amplifier unit is abnormal, such as signal interruption or signal quality degradation, the main control board 110 will send a switching signal to the second power amplifier unit to activate the second power amplifier unit and use the second power amplifier unit to take over the faulty first power amplifier unit. Specifically, the second power amplifier unit receives the audio signal from the decoder board connected to the faulty first power amplifier unit and amplifies and outputs it, thereby realizing automatic switching between the main power amplifier and the backup power amplifier, avoiding signal interruption, and ensuring the continuous operation of the power amplifier device 100.

[0042] It is understandable that the second power amplifier unit includes a power amplifier, and the specific model can be selected according to the actual situation, without any restrictions here.

[0043] In one implementation, please refer again Figure 4 The second power amplifier module 130 further includes a relay, which is electrically connected to the second power amplifier unit.

[0044] In this embodiment, the relay can control the connection status between the second power amplifier unit and the output terminal. When the second power amplifier module 130 is started, the relay will engage after a delay to prevent the inrush current at the moment of power-on from directly acting on the output terminal device, thus protecting the output terminal device from damage. In the event of an overload, the relay will automatically disconnect the output circuit, cutting off the connection between the second power amplifier unit and the output terminal device, preventing adverse effects caused by overload.

[0045] In one implementation, please refer again Figure 4 The second power amplifier module 130 further includes a surge arrester, which is electrically connected to the second power amplifier unit.

[0046] It is understandable that surge arresters can effectively protect the second power amplifier module 130 from damage caused by lightning overvoltage, switching overvoltage, and other impacts. When an overvoltage enters the power amplifier along the line, the surge arrester will conduct, introducing the overvoltage into the grounding system, limiting the overvoltage amplitude on the power amplifier, and preventing the insulation of the power amplifier from being broken down.

[0047] It should be noted that in other embodiments, other protection devices may be provided for each first power amplifier module 120 and / or each second power amplifier module 130 according to actual needs. This is only an example and is not a limitation.

[0048] In one embodiment, the power amplifier device 100 further includes an energy storage battery, which is disposed in the cabinet 140 and electrically connected to the main control board 110, the first power amplifier module 120 and each of the second power amplifier modules 130.

[0049] In this embodiment, the energy storage battery is used to power the main control board 110, each of the first power amplifier modules 120 and each of the second power amplifier modules 130.

[0050] In one embodiment, the top of the cabinet 140 is provided with a ventilation opening.

[0051] In this embodiment, the power amplifier 100 generates a large amount of heat during prolonged operation or high-power output. If this heat cannot be dissipated in time, it will cause the internal temperature to become too high, affecting its normal operation and even damaging internal components. The ventilation openings can effectively reduce the temperature inside the cabinet 140 and prevent the power amplifier from overheating.

[0052] Understandably, because hot air has a lower density, it will naturally rise and accumulate at the top of the rack 140. The vents at the top of the rack 140 provide an outlet for the hot air, which is then exhausted from the rack 140, creating convection. At the same time, cooler outside air enters from the air inlets at the bottom or side of the rack, exchanging heat with the internal hot air and further carrying away the heat generated by the power amplifier unit 100.

[0053] In one embodiment, a cooling fan is provided inside the cabinet 140.

[0054] In some cases with high heat dissipation requirements, the server rack 140 will also be equipped with forced ventilation equipment such as cooling fans. Understandably, the cooling fans expel hot air through the top vents, accelerating airflow and improving heat dissipation efficiency.

[0055] In this embodiment, the cooling fan is electrically connected to the main control board 110. The cooling fan receives control signals from the main control board 110 and starts or stops according to the control signals. Specifically, for example, when the temperature inside the cabinet 140 is higher than a preset temperature threshold, the main control board 110 sends a first control signal to the cooling fan. When the first control signal is received, the cooling fan starts to accelerate the airflow inside the cabinet 140 and achieve heat dissipation. When the temperature inside the cabinet 140 is lower than the preset temperature threshold, the main control board 110 sends a second control signal to the cooling fan. When the second control signal is received, the cooling fan stops rotating.

[0056] This application provides a power amplifier device, including: a cabinet, a main control board, at least one first power amplifier module, and at least one second power amplifier module. The cabinet contains multiple parallel slide rails, each used for sliding connection with either the first or second power amplifier module. The main control board is disposed within the cabinet. Each first and second power amplifier module is provided with a card slot interface, which is electrically connected to the main control board. This application connects the power amplifier and the main control board via a card-slot connection, avoiding complex wiring between modules, improving the space utilization of the power amplifier device, resulting in higher integration and a smaller size.

[0057] Example 2

[0058] In addition, please see Figure 5 This application also provides a power amplifier system 500, including: an audio device 510 and the power amplifier device 100 described in Embodiment 1, wherein the audio device 510 is electrically connected to the power amplifier device 100.

[0059] Specifically, the power amplifier device 100 includes: a cabinet 140, a main control board 110, at least one first power amplifier module 120, and at least one second power amplifier module 130; the cabinet 140 is provided with multiple slide rails 141, which are arranged in parallel and are respectively used to slide with the first power amplifier module 120 or the second power amplifier module 130; the main control board 110 is disposed in the cabinet 140; each of the first power amplifier module 120 and each of the second power amplifier modules 130 is provided with a card slot interface, and each card slot interface is electrically connected to the main control board 110.

[0060] In one embodiment, the main control board 110 is provided with a plurality of card slots, each of which is respectively engaged with the card interface on the first power amplifier module 120 or the second power amplifier module 130.

[0061] In one embodiment, the first power amplifier module 120 includes a decoding board and a first power amplifier unit, wherein the decoding board is electrically connected to the audio device and the first power amplifier unit respectively; and the first power amplifier unit is electrically connected to the main control board 110 through the card interface.

[0062] In one embodiment, the second power amplifier module 130 includes a second power amplifier unit, which is electrically connected to the main control board 110 via the card interface.

[0063] In one embodiment, the second power amplifier module 130 further includes a relay, which is electrically connected to the second power amplifier unit.

[0064] In one embodiment, the second power amplifier module 130 further includes a surge arrester, which is electrically connected to the second power amplifier unit.

[0065] In one embodiment, the power amplifier device 100 further includes an energy storage battery, which is disposed in the cabinet 140 and electrically connected to the main control board 110, the first power amplifier module 120 and each of the second power amplifier modules 130.

[0066] In one embodiment, the top of the cabinet 140 is provided with a ventilation opening.

[0067] In one embodiment, a cooling fan is provided inside the cabinet 140.

[0068] The power amplifier system 500 provided in this application embodiment can realize all the functions of the power amplifier device 100 described in Embodiment 1 above. To avoid repetition, it will not be described again here.

[0069] This application provides a power amplifier system, including: an audio device and the power amplifier device described in embodiment 1. The power amplifier device is connected to the main control board by a snap-fit, which avoids complex wiring between modules, improves the space utilization of the power amplifier device, makes the power amplifier device more integrated, and reduces the size of the power amplifier device.

[0070] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0071] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0072] The embodiments described above are merely examples 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. 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 modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A power amplifier device, characterized in that, The device includes: a cabinet, a main control board, at least one first power amplifier module and at least one second power amplifier module; The cabinet is equipped with multiple slide rails, which are arranged in parallel and are used to slide with the first power amplifier module or the second power amplifier module respectively. The main control board is located inside the cabinet; Each of the first power amplifier modules and each of the second power amplifier modules is provided with a card slot interface, and each card slot interface is electrically connected to the main control board. The first power amplifier module includes: a decoding board and a first power amplifier unit, wherein the decoding board is electrically connected to the audio device and the first power amplifier unit respectively; the first power amplifier unit is electrically connected to the main control board through the card slot interface; The second power amplifier module includes: a second power amplifier unit, which is electrically connected to the main control board via the card interface; the second power amplifier module also includes: a relay, which is electrically connected to the second power amplifier unit; The second power amplifier unit is used to receive and amplify audio signals from the decoding board connected to the faulty first power amplifier unit when any of the first power amplifier units fails. The relay is used to control the connection status between the second power amplifier unit and the output terminal.

2. The power amplifier device according to claim 1, characterized in that, The main control board is provided with multiple card slots, each of which is respectively matched with the card interface on the first power amplifier module or the second power amplifier module.

3. The power amplifier device according to claim 1, characterized in that, The second power amplifier module further includes a surge arrester, which is electrically connected to the second power amplifier unit.

4. The power amplifier device according to any one of claims 1-3, characterized in that, The power amplifier device further includes an energy storage battery, which is disposed in the cabinet and electrically connected to the main control board, each of the first power amplifier modules and each of the second power amplifier modules.

5. The power amplifier device according to claim 4, characterized in that, The top of the cabinet is equipped with ventilation openings.

6. The power amplifier device according to claim 5, characterized in that, The cabinet is equipped with cooling fans.

7. A power amplifier system, characterized in that, include: An audio device and a power amplifier device according to any one of claims 1-6, wherein the audio device is electrically connected to the power amplifier device.

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