Power amplifier device and audio playing system

Abstract

The utility model relates to the technical field of audio processing, and provides power amplifier equipment and an audio playing system. The power amplifier equipment comprises an audio receiving module, a temperature sensor and a power amplifier module; the temperature sensor is arranged on the power amplifier module to collect temperature information of the power amplifier module; the power amplifier module comprises a first processor and a power amplifier, the temperature sensor and the power amplifier are electrically connected with the first processor, the first processor and the power amplifier are electrically connected with the audio receiving module, the audio receiving module is configured to be in communication connection with the host, and the power amplifier is configured to be electrically connected with the loudspeaker. According to the utility model, overheating protection can be conveniently carried out on the power amplifier module of the power amplifier equipment, and the temperature of the power amplifier module can be conveniently and accurately controlled without replacing related hardware of the power amplifier equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to audio processing technical field especially, relate to a kind of power amplifier equipment and audio playback system. BACKGROUND

[0002] With the increasing quantity of vehicle-mounted external power amplifier of car, Booster power amplifier (power amplifier without control unit) is widely favored with its simple circuit, channel convenient expansion, cost advantage is obvious, but, since the existence of the power amplifier equipment without control unit, some diagnosis is difficult to realize, such as temperature protection strategy can only be realized by increasing external circuit, if the temperature protection threshold of power amplifier equipment is changed, only relevant hardware can be replaced, it is more cumbersome to operate, it is inconvenient to accurately control the temperature of power amplifier equipment. SUMMARY

[0003] The utility model provides a kind of power amplifier equipment, to at least solve or improve the problem of inconvenient accurate control of temperature of power amplifier equipment in prior art.

[0004] In the first aspect, the utility model provides a kind of power amplifier equipment, comprising: audio receiving module, temperature sensor and power amplifier module;

[0005] The temperature sensor is arranged in the power amplifier module to collect temperature information of the power amplifier module;

[0006] The power amplifier module includes first processor and power amplifier, the temperature sensor and the power amplifier are electrically connected with the first processor respectively, the first processor and the power amplifier are electrically connected with the audio receiving module respectively, the audio receiving module is configured to be communicated with host computer, and the power amplifier is configured to be electrically connected with loudspeaker;

[0007] The temperature information collected by the temperature sensor can be read by the host computer, the audio receiving module is used to receive audio information and temperature regulation parameter corresponding to the temperature information sent by the host computer, the power amplifier is used to amplify the audio information, and the first processor is used to adjust the gain of the power amplifier according to the temperature regulation parameter.

[0008] According to the power amplifier equipment provided by the utility model, the power amplifier module further includes: audio decoder;The audio receiving module and the audio decoder are electrically connected, and the audio decoder and the power amplifier are electrically connected.

[0009] According to the power amplifier equipment provided by the utility model, the power amplifier equipment further includes: filtering module, the power amplifier and the filtering module are electrically connected, and the filtering module is configured to be electrically connected with the loudspeaker.

[0010] According to the power amplifier device, the power amplifier device further comprises a shell and a fan; the shell has an air inlet, an air outlet and an air duct formed between the air inlet and the air outlet, the power amplifier module and the fan are arranged in the air duct, and the first processor and the fan are electrically connected.

[0011] In a second aspect, the utility model also provides an audio playing system, include: host computer, loudspeaker and the power amplifier device as described above;

[0012] The host computer and the audio receiving module are in communication connection, and the power amplifier and the loudspeaker are electrically connected.

[0013] According to the utility model provides an audio playing system, the host computer includes second processor and audio output module;

[0014] The second processor and the audio output module are electrically connected, and the audio output module and the audio receiving module are in communication connection.

[0015] The second processor is configured to obtain an audio file and a temperature adjustment parameter, and the audio output module is used to deliver the audio file and the temperature adjustment parameter to the audio receiving module.

[0016] According to the utility model provides an audio playing system, the host computer is configured with man-machine interaction module, and the man-machine interaction module and the second processor are electrically connected; the man-machine interaction module is configured to receive the input of the temperature adjustment parameter.

[0017] According to the utility model provides an audio playing system, the man-machine interaction module includes touch screen and / or adjustment knob.

[0018] According to the utility model provides an audio playing system, the audio playing system further comprises a memory, the second processor and the memory are electrically connected, and the memory is configured to store the audio file and the temperature adjustment parameter.

[0019] The man-machine interaction module is configured to receive the input of the calling instruction, and the second processor is configured to respond to the calling instruction to call the temperature adjustment parameter stored in the memory.

[0020] According to the utility model provides an audio playing system, the audio output module and the audio receiving module are all A2B module.

[0021] The power amplifier equipment and the audio playing system provided by the utility model, through the power amplifier equipment configuration audio receiving module and the power amplifier module with temperature sensor, temperature sensor can gather temperature information of power amplifier module, audio receiving module can receive audio information from host computer and temperature adjustment parameter corresponding to temperature information, this design can amplify and process audio information through power amplifier of power amplifier module, in order to drive loudspeaker to sound normally with processed audio information, when the temperature of power amplifier module is too high, the first processor of power amplifier module can reduce the gain of power amplifier according to the temperature adjustment parameter of host computer feedback, carry out overheating protection to power amplifier module, realize accurate control of the temperature of power amplifier module conveniently without replacing the relevant hardware of power amplifier equipment. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 It is the control structure block diagram of the audio playing system provided by the utility model embodiment.

[0024] Reference signs:

[0025] 1, power amplifier equipment;11, power amplifier module;12, temperature sensor;13, audio receiving module;14, filter module;15, first power module;2, host computer;21, second processor;22, audio output module;23, man-machine interaction module;24, memory;25, second power module;3, loudspeaker. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model more clear, the following will combine the drawings in the utility model, and the technical scheme in the utility model is clearly and completely described, obviously, the described embodiment is a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] The following will combine Figure 1 The power amplifier equipment and the audio playing system provided by the utility model embodiment are described in detail through specific embodiment and its application scene.

[0028] In the first aspect, as Figure 1As shown, the utility model embodiment provides a kind of power amplifier equipment 1, comprising: audio receiving module 13, temperature sensor 12 and power amplifier module 11;

[0029] Temperature sensor 12 is located in power amplifier module 11, to collect the temperature information of power amplifier module 11;Power amplifier module 11 includes first processor and power amplifier, temperature sensor 12 and power amplifier are electrically connected with first processor respectively, first processor and power amplifier are electrically connected with audio receiving module 13 respectively, audio receiving module 13 is configured to be connected with host computer 2 communication, power amplifier is configured to be electrically connected with loudspeaker 3;

[0030] Temperature information collected by temperature sensor 12 can be read by host computer 2, audio receiving module 13 is used to receive the audio information and the temperature regulation parameter corresponding to temperature information sent by host computer 2, power amplifier is used to amplify the audio information, and first processor is used to adjust the gain of power amplifier according to temperature regulation parameter.

[0031] It can be understood that temperature sensor 12 can adopt NTC thermistor, and the NTC thermistor is built-in in power amplifier module 11, for example, is arranged between different functional modules corresponding to power amplifier module 11, to realize the collection of temperature information of power amplifier module 11.

[0032] The first processor can be a central processing unit (CPU), and the power amplifier can adopt a single integrated circuit power amplifier, such as an LM386 single power audio amplifier circuit, a DA2030 or a TDA2050 integrated operational amplifier audio power amplifier module. Since the power amplifier is the main heating component of the power amplifier module 11, the temperature sensor 12 can be arranged in contact with the power amplifier to collect the temperature information of the power amplifier.

[0033] The audio receiving module 13 can adopt an A2B module, which can be connected to the host computer 2 through an A2B cable, so that the power amplifier equipment 1 can receive the audio signal loaded with the temperature regulation parameter from the host computer 2 based on the A2B module. Of course, the audio receiving module 13 can also adopt a USB receiving module, an optical fiber audio receiving module 13, a radio frequency receiving module, a Bluetooth receiving module, etc., which is not limited in detail.

[0034] In addition, the power amplifier equipment 1 is provided with a first power supply module 15, which can include a rechargeable battery and a plurality of voltage stabilizing chips electrically connected to the rechargeable battery, and different voltage stabilizing chips can provide different output voltages;The first power supply module 15 is electrically connected to the power amplifier module 11 and the audio receiving module 13 respectively, to provide working power supply for each module corresponding to the power amplifier module 11 and the audio receiving module 13.

[0035] In practical application, the temperature information collected by the temperature sensor 12 is fed back to the first processor, and the host 2 reads the temperature information from the first processor through the audio receiving module 13, for example, the host 2 reads the temperature information every interval set time, and the set time can be 100-200mS.

[0036] When the temperature information of the power amplifier is higher than the set limit value, the host 2 sends the temperature adjustment parameter corresponding to the temperature information to the audio receiving module 13, and the audio receiving module 13 transmits the temperature adjustment parameter to the first processor, and the first processor reduces the gain of the power amplifier according to the received temperature adjustment parameter, so that the power of the power amplifier is reduced, and the temperature of the power amplifier is ensured to be reduced to the appropriate temperature interval.

[0037] The power amplifier equipment 1 shown in the utility model, through to the power amplifier equipment 1 configuration audio receiving module 13 and with temperature sensor 12's power amplifier module 11, temperature sensor 12 can gather the temperature information of power amplifier module 11, and the audio receiving module 13 can receive the audio information and the temperature adjustment parameter corresponding to the temperature information from the host 2, this design can amplify the audio information by the power amplifier of power amplifier module 11 and process to drive the loudspeaker 3 normally with the processed audio information, when the temperature of power amplifier module 11 is too high, the first processor of power amplifier module 11 can reduce the gain of the power amplifier according to the temperature adjustment parameter fed back by the host 2, and the power amplifier module 11 is protected from overheating, so that the temperature of the power amplifier module 11 is accurately controlled conveniently without replacing the related hardware of the power amplifier equipment 1.

[0038] In some embodiments, as Figure 1 shown, the power amplifier module 11 further comprises: an audio decoder; the audio receiving module 13 and the audio decoder are electrically connected, and the audio decoder and the power amplifier are electrically connected.

[0039] It can be understood that the audio decoder can be a vehicle-mounted audio decoder, for example, the chip type of the vehicle-mounted audio decoder can be TLV320AIC3100 chip or PCM5102A chip.

[0040] The audio decoder is used for decoding the audio signal from the audio receiving module 13, converting the audio signal from a compressed digital audio signal into an analog audio signal, so that the power amplifier can amplify the analog audio signal, thereby meeting the playing demand of the loudspeaker 3.

[0041] Exemplarily, when the frequency receiving module is an A2B module, the A2B module is provided with a first output port and a second output port, the first output port of the A2B module is electrically connected with the first processor, so that the A2B module transmits information containing temperature adjustment parameters to the first processor through an I2C communication protocol, and the second output port of the A2B module is electrically connected with the audio decoder, so that the audio signal is transmitted to the audio decoder.

[0042] In some embodiments, as shown in Figure 1 The power amplifier device 1 further comprises a filter module 14, the power amplifier and the filter module 14 are electrically connected, and the filter module 14 is configured to be electrically connected with the loudspeaker 3.

[0043] It can be understood that the filter module 14 can be an LC filter circuit composed of a capacitor and an inductor, and the filter module 14 is used for filtering the audio signal output by the power amplifier to improve the sound quality of the loudspeaker 3.

[0044] In some embodiments, the power amplifier device 1 further comprises a shell and a fan, the shell has an air inlet, an air outlet and an air duct formed between the air inlet and the air outlet, the power amplifier module 11 and the fan are arranged in the air duct, and the first processor is electrically connected with the fan.

[0045] It can be understood that the fan can be a cooling fan, and the fan can be arranged at the air inlet and the air outlet. When the first processor detects that the temperature information fed back by the temperature sensor 12 exceeds the set temperature, the first processor controls the fan to start running, the fan drives the air outside to enter the air duct and exchanges heat with the power amplifier module 11, so as to realize heat dissipation of the power amplifier module 11, and the air after heat dissipation is discharged from the air outlet.

[0046] At the same time, in actual application, the first processor can also control the fan to reverse to remove dust attached to the inner wall of the air duct and the power amplifier module 11.

[0047] In the second aspect, as shown in Figure 1 The utility model embodiment further provides an audio playing system, which comprises a host 2, a loudspeaker 3 and the power amplifier device 1 as described above; the host 2 and the audio receiving module 13 are in communication connection, and the power amplifier is electrically connected with the loudspeaker 3.

[0048] It can be understood that, since the audio playing system comprises the power amplifier device 1, the specific structure of the power amplifier device 1 is referred to the above-mentioned embodiments, and therefore the audio playing system of the embodiment comprises all the technical solutions of the above-mentioned embodiments, thereby having all the beneficial effects of the technical solutions of the above-mentioned embodiments.

[0049] Further, as shown in Figure 1As shown, the host 2 comprises a second processor 21 and an audio output module 22; the second processor 21 and the audio output module 22 are electrically connected, and the audio output module 22 is in communication connection with the audio receiving module 13.

[0050] The second processor 21 is configured to be capable of acquiring the audio file and the temperature adjustment parameter, and the audio output module 22 is used to deliver the audio file and the temperature adjustment parameter to the audio receiving module 13.

[0051] It can be understood that the second processor 21 comprises a central processing unit (CPU), and the second processor 21 can be configured with a communication interface module such as a USB interface and a Type-C interface, so as to acquire the audio file and the temperature adjustment parameter based on the communication interface module.

[0052] The audio output module 22 comprises an A2B module, and the second processor 21 is in communication connection with the A2B module through an I2C communication protocol. When the audio receiving module is an A2B module, the two A2B modules are in communication connection through an A2B cable.

[0053] In some embodiments, as Figure 1 As shown, the host 2 is configured with a human-computer interaction module 23, and the human-computer interaction module 23 is electrically connected with the second processor 21; the human-computer interaction module 23 is configured to receive input of the temperature adjustment parameter.

[0054] Specifically, the human-computer interaction module 23 comprises a touch screen and / or an adjustment knob. In the case where the human-computer interaction module 23 is a touch screen, the touch screen is used to display temperature information collected by the temperature sensor 12, and the working personnel can also input the temperature adjustment parameter corresponding to the temperature information to the touch screen through a touch screen input mode (such as sliding or pressing a virtual button on the touch screen) according to the temperature information collected by the temperature sensor 12, and the temperature adjustment parameter is transmitted to the second processor 21 through the touch screen, and then sequentially transmitted to the audio output module 22 and the audio receiving module 13 to reach the first processor. When the first processor receives the temperature adjustment parameter, the first processor can adjust the gain of the power amplifier according to the temperature adjustment parameter.

[0055] In the case where the human-computer interaction module 23 is an adjustment knob, the adjustment knob is connected with the second processor 21 through an ADC module (analog-to-digital converter), and a set voltage signal representing the temperature adjustment parameter can be input to the ADC module by rotating the adjustment knob. The ADC module performs analog-to-digital conversion on the voltage signal input by the adjustment knob, so as to input the temperature adjustment parameter to the second processor 21.

[0056] In some embodiments, as Figure 1As shown, the audio playing system further comprises a memory 24, the second processor 21 and the memory 24 are electrically connected, the memory 24 is configured to store audio files and temperature adjustment parameters; the human-computer interaction module 23 is configured to receive the input of the calling instruction, and the second processor 21 is configured to respond to the calling instruction to call the temperature adjustment parameters stored in the memory 24.

[0057] In addition, the host 2 is further configured with a second power module 25, the second power module 25 can include a rechargeable battery and a plurality of voltage stabilizing chips electrically connected with the rechargeable battery, different voltage stabilizing chips can provide different output voltages; the second power module 25 is respectively electrically connected with the second processor 21, the memory 24 and the audio output module 22, so as to realize providing working power supply for these functional modules.

[0058] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A power amplifier device, characterized by, The power amplifier device comprises: an audio receiving module, a temperature sensor and a power amplifier module; the temperature sensor is arranged in the power amplifier module to collect temperature information of the power amplifier module; the power amplifier module comprises a first processor and a power amplifier, the temperature sensor and the power amplifier are electrically connected with the first processor respectively, the first processor and the power amplifier are electrically connected with the audio receiving module respectively, the audio receiving module is configured to be in communication connection with a host, and the power amplifier is configured to be in electrical connection with a loudspeaker; the temperature information collected by the temperature sensor can be read by the host, the audio receiving module is used to receive audio information and temperature adjustment parameters corresponding to the temperature information sent by the host, the power amplifier is used to amplify and process the audio information, and the first processor is used to adjust the gain of the power amplifier according to the temperature adjustment parameters.

2. The power amplifier device of claim 1, wherein, The power amplifier module further comprises an audio decoder, the audio receiving module and the audio decoder are electrically connected, and the audio decoder and the power amplifier are electrically connected.

3. The power amplifier device of claim 1, wherein, The power amplifier device further comprises a filtering module, the power amplifier and the filtering module are electrically connected, and the filtering module is configured to be in electrical connection with the loudspeaker.

4. The power amplifier device according to any one of claims 1 to 3, characterized by, The power amplifier device further comprises a shell and a fan; the shell has an air inlet, an air outlet and an air duct formed between the air inlet and the air outlet, the power amplifier module and the fan are arranged in the air duct, and the first processor and the fan are electrically connected.

5. An audio playback system, characterized by The audio playing system comprises: a host, a loudspeaker and the power amplifier device according to any one of claims 1 to 4; the host and the audio receiving module are in communication connection, and the power amplifier and the loudspeaker are in electrical connection.

6. The audio playback system of claim 5, wherein, The host comprises a second processor and an audio output module; the second processor and the audio output module are electrically connected, the audio output module and the audio receiving module are in communication connection; wherein the second processor is configured to obtain an audio file and temperature adjustment parameters, and the audio output module is used to deliver the audio file and the temperature adjustment parameters to the audio receiving module.

7. The audio playback system of claim 6, wherein, The host is configured with a human-computer interaction module, the human-computer interaction module and the second processor are electrically connected, and the human-computer interaction module is configured to receive input of the temperature adjustment parameters.

8. The audio playback system of claim 7, wherein, The human-computer interaction module comprises a touch screen and / or an adjusting knob.

9. The audio playback system of claim 7, wherein, The audio playing system further comprises a memory, the second processor and the memory are electrically connected, and the memory is configured to store the audio file and the temperature adjustment parameters; the human-computer interaction module is configured to receive input of a calling instruction, and the second processor is configured to call the temperature adjustment parameters stored in the memory in response to the calling instruction.

10. The audio playback system of any one of claims 6 to 9, wherein, The audio output module and the audio receiving module are both A2B modules.

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