Vehicle-mounted power amplifier host thermal management method, device and equipment and storage medium

Abstract

The invention discloses a thermal management method, device and equipment for a vehicle-mounted power amplifier host and a storage medium, and belongs to the technical field of vehicles. The method comprises the following steps: firstly, analyzing audio data to be played in real time, predicting the power demand and the heating condition of a power amplifier host, calculating the output power and the heating power of the audio to be played in combination with the operation mode of the power amplifier host, and then adjusting the heat dissipation power in advance according to the predicted values. The hysteresis of a traditional heat dissipation mode based on temperature change is eliminated. According to the scheme, heating is predicted and heat dissipation is adjusted in time, so that equipment faults and performance reduction caused by overheating are reduced, and stable operation of the vehicle-mounted power amplifier host under various audio loads is ensured.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a method, device, equipment and storage medium for thermal management of a vehicle-mounted power amplifier host. Background Art

[0002] With the continuous advancement of technology, in-car entertainment systems have become an indispensable part of modern cars. People have higher and higher requirements for sound quality while driving, and expect to enjoy a home theater-like listening experience. As the core device that provides high-quality audio output, the performance of the in-car amplifier host directly affects the performance of the entire in-car entertainment system. However, with the development of audio processing technology, the power demand and heat generation of the amplifier host when processing complex audio signals are also increasing, which puts higher requirements on the cooling system of the in-car amplifier host.

[0003] The car amplifier host generates a lot of heat during operation, especially when playing high-power audio. If the cooling system cannot discharge this heat in a timely and effective manner, it will not only cause the performance of the amplifier host to decline, but may also shorten its service life and even cause safety problems. At present, the heat dissipation method commonly used by car amplifier hosts is to adjust the heat dissipation power according to real-time temperature changes, but this method has certain defects. Since the heat generation of the amplifier host is related to the audio data played in real time and the load efficiency, that is, the heat generation of the amplifier host will change in real time, there is a certain lag in obtaining the target heat dissipation power according to the temperature change.

[0004] Therefore, how to design a system that can adjust the heat dissipation power in real time according to the characteristics of the audio signal and the power requirements, and eliminate the lag between heat generation and heat dissipation, has become a technical problem that needs to be solved urgently in this field. Summary of the invention

[0005] The main purpose of the present invention is to provide a method, device, equipment and storage medium for thermal management of a vehicle-mounted power amplifier host, aiming to solve the technical problem of how to design a system that can adjust the heat dissipation power in real time according to the characteristics and power requirements of the audio signal and eliminate the lag between heat generation and heat dissipation.

[0006] To achieve the above object, the present invention provides a vehicle-mounted power amplifier host thermal management method, the vehicle-mounted power amplifier host thermal management method comprising: Determine output power according to the buffered audio data stream; According to the output power and the host operation mode, the heating power of the power amplifier host is obtained; According to the heating power of the power amplifier host, a target heat dissipation power is obtained; The power amplifier host is cooled according to the target heat dissipation power to achieve non-hysteresis thermal management of heat generation and heat dissipation of the power amplifier host.

[0007] Optionally, determining the output power according to the buffered audio data stream includes: According to the buffered audio data stream, obtaining sound frequency information and sound loudness information of the data stream; The output power is determined according to the sound frequency information and the sound loudness information.

[0008] Optionally, determining the output power according to the sound frequency information and the sound loudness information includes: According to the sound loudness information and the reference loudness, the loudness amplification factor is obtained: Obtaining a frequency factor according to the sound frequency information and the frequency response efficiency curve; The output power is determined according to the loudness amplification factor, the frequency factor and the reference working power.

[0009] Optionally, after determining the output power according to the sound frequency information and the sound loudness information, the method further includes: If the low frequency ratio in the sound frequency information is higher than a preset ratio, or the high loudness ratio in the sound loudness information is higher than a preset ratio, the working mode of the power amplifier host is adjusted according to the output power.

[0010] Optionally, obtaining the heating power of the power amplifier host according to the output power and the host operation mode includes: According to the output power and the host operation mode, the host operating efficiency is obtained; The heating power of the power amplifier host is obtained according to the host working efficiency and the real-time power consumption.

[0011] Optionally, obtaining the host operating efficiency according to the output power and the host operating mode includes: Determining a load efficiency curve according to the host operation mode; The host operating efficiency is obtained according to the output power and load efficiency curve.

[0012] Optionally, obtaining a target heat dissipation power according to the heat generation power of the power amplifier host includes: The heat generation power of the power amplifier host is used as the reference heat dissipation power; According to the real-time ambient temperature and the temperature collected by the power amplifier host, the heat dissipation temperature difference is obtained; The target heat dissipation power is obtained according to the heat dissipation temperature difference and the reference heat dissipation power.

[0013] In addition, in order to achieve the above-mentioned purpose, the present invention provides a thermal management device for a vehicle-mounted power amplifier host, the thermal management device for a vehicle-mounted power amplifier host comprising: A data processing module, used for determining output power according to the buffered audio data stream; The data processing module is further used to obtain the heating power of the power amplifier host according to the output power and the host operation mode; A heat dissipation control module, used to obtain a target heat dissipation power according to the heat generation power of the power amplifier host; The heat dissipation control module is further used to dissipate heat for the power amplifier host according to the target heat dissipation power, so as to achieve non-hysteresis thermal management of heat generation and heat dissipation of the power amplifier host.

[0014] In addition, to achieve the above-mentioned purpose, the present invention provides a vehicle-mounted power amplifier host thermal management device, the vehicle-mounted power amplifier host thermal management device comprising: a memory, a processor, and a vehicle-mounted power amplifier host thermal management program stored in the memory and executable on the processor, the vehicle-mounted power amplifier host thermal management program being configured to implement the steps of the vehicle-mounted power amplifier host thermal management method.

[0015] In addition, to achieve the above-mentioned purpose, the present invention provides a storage medium, on which a vehicle-mounted power amplifier host thermal management program is stored. When the vehicle-mounted power amplifier host thermal management program is executed by a processor, the steps of the vehicle-mounted power amplifier host thermal management method are implemented.

[0016] The present invention predicts the power demand and heating of the power amplifier host by analyzing the audio data to be played in real time, and calculates the output power and heating power of the audio to be played in combination with the operation mode of the power amplifier host. Then, the heat dissipation power is adjusted in advance according to these predicted values ​​to eliminate the lag of the traditional heat dissipation mode based on temperature changes. By predicting heat and adjusting heat dissipation in time, this solution reduces equipment failures and performance degradation caused by overheating, and ensures the stable operation of the vehicle-mounted power amplifier host under various audio loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 This is a flow chart of the first embodiment of the thermal management method for a vehicle amplifier host of the present application; Figure 2 This is a flow chart of the second embodiment of the thermal management method for a vehicle-mounted power amplifier host of the present application; Figure 3 This is a functional module diagram of the thermal management device for the vehicle amplifier host of this application; Figure 4 It is a structural diagram of a terminal device in the hardware operating environment involved in the embodiment of the present application.

[0020] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0022] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0023] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a thermal management device for a vehicle-mounted power amplifier host, etc. The following takes a thermal management device for a vehicle-mounted power amplifier host as an example to illustrate this embodiment and the following embodiments.

[0024] The present application embodiment provides a method for thermal management of a vehicle amplifier host, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the present application.

[0025] In this embodiment, the thermal management method of the vehicle-mounted power amplifier host includes: Step S10: Determine the output power according to the buffered audio data stream.

[0026] It should be noted that the heat dissipation method commonly used by car power amplifiers is to adjust the heat dissipation power according to real-time temperature changes. The control logic of this method is relatively simple and easy to implement, but it still has certain limitations for the heat dissipation of car power amplifiers. The heat generation of the power amplifier is related to the audio data played in real time and the load efficiency. Specifically, when playing audio, the power amplifier needs to convert electrical energy into sound energy. This conversion process is not completely efficient, and some energy will be lost in the form of heat. In addition, the complexity and intensity of the audio data directly affect the power consumption and heat generation of the power amplifier. For example, when playing music with a large amount of low-frequency components, the power amplifier needs to provide a larger current to drive the speaker, which will cause more energy to be converted into heat. Similarly, high-loudness audio signals will also increase the power output of the power amplifier, thereby increasing the heat generation.

[0027] It is understandable that, in addition to audio data, the working mode and load state of the amplifier host will also affect the efficiency of converting electrical energy into sound energy. The power module usually has different working modes, such as fixed pulse width modulation mode and frequency hopping mode. In the fixed pulse width modulation mode, the switching frequency is fixed, and the pulse width is adjusted according to the load change. It is usually more efficient under heavy load because the conduction and switching losses are relatively small; in the frequency hopping mode, when the load is very light, the power module may skip some switching cycles to improve efficiency. It is more efficient under light load because the number of switches is reduced and the switching losses are reduced. These working modes show different power output efficiency characteristics under different load conditions. Some modes have higher power efficiency under heavy load, and the corresponding heat generation is relatively small, but the efficiency is lower under light load and the heat generation is larger; some modes have higher power efficiency under light load, and the corresponding heat generation is smaller, but the power efficiency is lower under heavy load and the heat generation is larger. Therefore, it is necessary to comprehensively calculate the audio output power of the amplifier host and the heat generation power in this case based on the audio data, the working mode of the op amp host, and the load state.

[0028] It should be understood that the cached audio data stream refers to the audio data that is about to be played. Generally, the time interval is about 5 to 10 seconds. The system will parse this cached audio data in advance, and calculate the change in load when playing the audio and the conversion efficiency under the current working mode on the premise that the working mode remains unchanged. Combined with the acoustic standards that need to be achieved for playback, such as decibels or sound pressure, the heating power of the host can be calculated.

[0029] Step S20: Obtaining the heating power of the power amplifier host according to the output power and the host operation mode.

[0030] It should be noted that the heat generation power of the power amplifier host depends on the efficiency of its energy conversion. The efficiency of the power amplifier refers to its ability to convert electrical energy into sound energy. The higher the efficiency, the less heat is generated during the conversion process. During the analysis of audio data, the acoustic energy generated to achieve the predetermined playback effect in the car can be determined. This is equivalent to anchoring the output power. According to the energy conversion efficiency of playing the audio in the current working mode, the heat generation power of the power amplifier host can be obtained.

[0031] In one embodiment, obtaining the heating power of the power amplifier host according to the output power and the host operation mode includes: determining a load efficiency curve according to the host operation mode; obtaining the host working efficiency according to the output power and the load efficiency curve; and obtaining the heating power of the power amplifier host according to the host working efficiency and real-time power consumption.

[0032] It should be noted that the load efficiency curve is a graph that describes the efficiency of the power amplifier under different load conditions (that is, the efficiency of converting electrical energy into sound energy). The load efficiency curve under the current working mode can be used to predict the efficiency of the power amplifier at a given output power.

[0033] It is understandable that the efficiency of the power amplifier can be obtained through the technical specifications provided by the manufacturer or determined through laboratory tests. The efficiency data usually changes with changes in load and output power. In particular, when the working mode remains unchanged, the low-frequency and high-loudness parts of the sound will significantly affect the conversion efficiency of the power amplifier. At this time, it is necessary to further match the working mode of the power amplifier to improve the overall energy utilization efficiency.

[0034] In one embodiment, after determining the output power according to the sound frequency information and the sound loudness information, the method further includes: if the low frequency ratio in the sound frequency information is higher than a preset ratio, or the high loudness ratio in the sound loudness information is higher than a preset ratio, adjusting the working mode of the power amplifier host according to the output power.

[0035] It should be understood that low-frequency sounds usually require a larger amplitude to produce, which means that the speaker requires a larger current to drive. In addition, low-frequency signals may cause the power amplifier to operate in a nonlinear region, thereby reducing efficiency and increasing heat generation. The low frequency here refers to the frequency range between 20 Hz and 250 Hz. This range includes bass drums, bass guitars, and the low parts of male and female voices. If the audio data to be played has a high proportion of these low-frequency parts, the current working mode can be adjusted to a working mode that is more efficient in low-frequency playback. Similarly, since normal conversation sounds and music sounds are approximately between 40dB and 60 dB, if the proportion of audio exceeding this part reaches a preset ratio, it can be regarded as also needing to adjust the working mode of the power amplifier host. In the judgment process, the preset ratio is 50%, so as long as one of the two exceeds this ratio, it will be fine.

[0036] Step S30: obtaining a target heat dissipation power according to the heat generation power of the power amplifier host.

[0037] It should be noted that the power of the cooling system is not directly equivalent to the heat generation power of the power amplifier host. This is because the heat is transferred from the power amplifier host to the cooling system, and then dissipated from the cooling system to the environment. There will be efficiency loss in this process. Not all heat energy can be transferred and dissipated 100%. The temperature and airflow of the external environment will affect the performance of the cooling system. Even if the power amplifier host generates a certain amount of heat energy, the heat dissipation efficiency may vary due to different environmental conditions. In addition, in order to ensure stability and safety, the cooling system is usually designed with a certain degree of redundancy, which means that its heat dissipation capacity may exceed the maximum heat generation power of the power amplifier host.

[0038] In one embodiment, obtaining the target heat dissipation power according to the heat dissipation power of the power amplifier host includes: taking the heat dissipation power of the power amplifier host as the benchmark heat dissipation power; obtaining the heat dissipation temperature difference according to the real-time ambient temperature and the collected temperature of the power amplifier host; and obtaining the target heat dissipation power according to the heat dissipation temperature difference and the benchmark heat dissipation power.

[0039] It should be understood that the heat power currently generated by the amplifier host is calculated based on the working efficiency and output power of the amplifier host. This heat power is regarded as the minimum heat power that the cooling system needs to handle, that is, the benchmark heat dissipation power. The difference between the ambient temperature and the temperature of the amplifier host is calculated to determine the impact of external factors on the operation of the cooling system. If the temperature difference is large, the heat dissipation power may need to be increased, for example, by increasing the fan speed or increasing the flow rate of the liquid cooling system. If the temperature difference is small, the cooling system can reduce power to save energy and reduce noise. The heat dissipation temperature difference and the benchmark heat dissipation power are used to calculate the heat dissipation power that the real-time cooling system needs to provide.

[0040] It is understandable that the power amplifier host is cooled according to the target cooling power to achieve non-hysteresis thermal management of heat generation and heat dissipation of the power amplifier host. The present embodiment provides a method for thermal management of a vehicle-mounted power amplifier host. The present embodiment determines the output power based on the cached audio data stream; obtains the heating power of the power amplifier host based on the output power and the host operation mode; and obtains the target heat dissipation power based on the heating power of the power amplifier host.

[0041] In summary, the beneficial effect of this embodiment is that by analyzing the audio data stream to determine the output power, the power consumption of the power amplifier host can be more accurately predicted and controlled. According to the complexity and intensity of the audio, the working mode of the power amplifier host can be dynamically adjusted to optimize efficiency and reduce heat. Finally, the heat generation power of the power amplifier host is monitored in real time, and the heat dissipation system is adjusted according to the heat generation situation to ensure timely and effective heat dissipation. This solution reduces the risk of hardware damage caused by overheating through effective thermal management, and provides a more consistent and high-quality audio playback experience by maintaining a constant and suitable operating temperature.

[0042] Reference Figure 2 , Figure 2 This is a flow chart of the second embodiment of the thermal management method for a vehicle-mounted power amplifier host of the present application. Based on the above-mentioned first embodiment, the second embodiment of the thermal management method for a vehicle-mounted power amplifier host of the present application is proposed.

[0043] In this embodiment, step S10 of the thermal management method for the vehicle-mounted power amplifier host further includes: Step S101: obtaining sound frequency information and sound loudness information of the data stream according to the buffered audio data stream.

[0044] It should be noted that the sound frequency information in this embodiment refers to the frequency distribution data of the audio data during the playback process. After obtaining the data stream, the proportion of each frequency band and the average frequency are counted. Similarly, the sound loudness information refers to the proportion of each loudness interval in the audio data and the average loudness.

[0045] It can be understood that by understanding the frequency distribution and loudness range of the audio data, the power amplifier can be adjusted to a more suitable working mode. In addition, for different application scenarios, such as movies, music or navigation prompts, the system can adjust the audio processing strategy to meet specific needs to adapt to different audio characteristics.

[0046] Step S102: obtaining a loudness amplification factor according to the sound loudness information and a reference loudness.

[0047] It should be noted that the reference loudness is a preset reference loudness level, which can be a system default value or a user-set preference value, and is used to compare with the loudness of actual audio data. The loudness amplification factor refers to the ratio between the actual audio loudness and the reference loudness. For example, if the loudness of the audio is 6 dB higher than the reference loudness, the amplification factor is approximately 2 times, because each increase of 6 dB is approximately a doubling.

[0048] It is understandable that the purpose of calculating the loudness amplification factor is to adjust the output power of the power amplifier to match the actual loudness requirements of the audio content, ensuring that audios of different loudness can be played at an appropriate loudness. This amplification factor can be used in subsequent steps, such as adjusting the power amplifier working mode or the input parameters of the cooling system.

[0049] Step S103: obtaining a frequency factor according to the sound frequency information and the frequency response efficiency curve.

[0050] It should be noted that in different working modes, the frequency of the audio is directly related to the working efficiency. The frequency response efficiency curve is a chart that describes the efficiency changes of the power amplifier or speaker at different frequencies. Usually, the efficiency is not constant at all frequencies, especially at low and high frequencies, the efficiency may decrease. The frequency factor is an adjustment value calculated based on the frequency components of the audio signal and the efficiency of the device at these frequencies, which is used to predict and adjust the output power of the power amplifier.

[0051] It is understandable that the system will calculate a comprehensive frequency factor based on the efficiency curve and the frequency components of the audio signal. Assuming that an audio signal is mainly composed of components with frequencies of 100 Hz, 200 Hz and 300 Hz, the frequency response efficiency curve of the power amplifier shows that the efficiencies at these frequencies are 80%, 85% and 75% respectively. If the calculated frequency factor is lower than 1 (for example, 0.8), it means that under the current audio signal, the efficiency of the power amplifier is lower than its performance at the reference frequency. The system needs to increase the output power appropriately to compensate for the efficiency loss. The frequency factor can be dynamically calculated based on real-time analysis of the audio content to help the system intelligently adjust the working status and cooling strategy of the power amplifier.

[0052] Step S104: Determine the output power according to the loudness amplification factor, the frequency factor and the reference working power.

[0053] It can be understood that the proportional relationship between the current output power and the reference working power can be roughly obtained through the loudness amplification factor and the frequency factor, and then the approximate output power can be calculated.

[0054] It should be understood that if the calculated output power is higher than the benchmark operating power here, the power amplifier host can be regarded as being in a heavy load state, otherwise it is in a light load state. In the heavy load state, the system may need to increase the output voltage or current of the power module to ensure stable power output. In the light load state, the system can reduce the output of the power module to save energy and reduce heat.

[0055] The present embodiment provides a method for thermal management of a vehicle-mounted power amplifier host. The present embodiment obtains sound frequency information and sound loudness information of the data stream according to the cached audio data stream; obtains a loudness increase factor according to the sound loudness information and a reference loudness; obtains a frequency factor according to the sound frequency information and a frequency response efficiency curve; and determines output power according to the loudness increase factor, the frequency factor, and the reference working power.

[0056] In summary, the beneficial effect of this embodiment is that by comprehensively analyzing the frequency and loudness information of the audio data stream, the intelligent thermal management of the vehicle amplifier host is realized, and the performance and efficiency of the audio system are optimized. By calculating the loudness amplification factor and the frequency factor, the system can dynamically adjust the output power to meet the actual needs of the audio content, ensuring the sound quality while reducing unnecessary energy consumption. This method allows the system to work under different audio loads, whether it is heavy load or light load, it can maintain optimal power output and thermal management, thereby extending the service life of the hardware and providing a more stable and reliable audio playback experience.

[0057] Reference Figure 3The present application also provides a vehicle-mounted power amplifier host thermal management device, the vehicle-mounted power amplifier host thermal management device comprising: The data processing module 10 is used to determine the output power according to the buffered audio data stream; The data processing module 10 is further used to obtain the heating power of the power amplifier host according to the output power and the host operation mode; The heat dissipation control module 20 is used to obtain the target heat dissipation power according to the heat generation power of the power amplifier host; The heat dissipation control module 20 is further used to dissipate heat for the power amplifier host according to the target heat dissipation power, so as to achieve non-hysteresis thermal management of heat generation and heat dissipation of the power amplifier host.

[0058] In one embodiment, the data processing module 10 is further configured to obtain sound frequency information and sound loudness information of the data stream according to the buffered audio data stream; and determine output power according to the sound frequency information and sound loudness information.

[0059] In one embodiment, the data processing module 10 is further used to obtain a loudness amplification factor according to the sound loudness information and a reference loudness; obtain a frequency factor according to the sound frequency information and a frequency response efficiency curve; and determine the output power according to the loudness amplification factor, the frequency factor and a reference working power.

[0060] In one embodiment, the data processing module 10 is further configured to adjust the working mode of the power amplifier host according to the output power if the low frequency ratio in the sound frequency information is higher than a preset ratio, or the high loudness ratio in the sound loudness information is higher than a preset ratio.

[0061] In one embodiment, the data processing module 10 is further used to obtain the host working efficiency according to the output power and the host operation mode; and to obtain the heating power of the power amplifier host according to the host working efficiency and the real-time power consumption.

[0062] In one embodiment, the data processing module 10 is further used to determine a load efficiency curve according to the host operation mode; and obtain the host working efficiency according to the output power and load efficiency curve.

[0063] In one embodiment, the heat dissipation control module 20 is further used to use the heat generation power of the power amplifier host as a reference heat dissipation power; obtain a heat dissipation temperature difference according to the real-time ambient temperature and the collected temperature of the power amplifier host; and obtain the target heat dissipation power according to the heat dissipation temperature difference and the reference heat dissipation power.

[0064] An embodiment of the present application also provides a thermal management device for a vehicle-mounted power amplifier host, the device comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the thermal management method for the vehicle-mounted power amplifier host in the above-mentioned embodiment one.

[0065] Reference below Figure 4 , which shows a schematic diagram of the structure of a vehicle-mounted power amplifier host thermal management device suitable for implementing the embodiment of the present application. The vehicle-mounted power amplifier host thermal management device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 3 The vehicle-mounted power amplifier host thermal management device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0066] like Figure 4As shown, the thermal management device for the vehicle amplifier host may include a processing device 1001 (such as a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM: Read Only Memory) 1002 or the program loaded from the storage device 1003 to the random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the thermal management device for the vehicle amplifier host are also stored. The processing device 1001, ROM1002 and RAM1004 are connected to each other through a bus 1005. The input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to the I / O interface 1006: input devices 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; storage devices 1003 including, for example, a magnetic tape, a hard disk, etc.; and communication devices 1009. The communication device 1009 can allow the vehicle amplifier host thermal management device to communicate wirelessly or wired with other devices to exchange data. Although the figure shows a vehicle amplifier host thermal management device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have alternatively.

[0067] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0068] The thermal management device for the vehicle power amplifier host provided by the present application adopts the thermal management method for the vehicle power amplifier host in the above-mentioned embodiment, which can solve the technical problem in the art of how to design a system that can adjust the heat dissipation power in real time according to the characteristics and power requirements of the audio signal, and eliminate the lag between heat generation and heat dissipation. Compared with the prior art, the beneficial effects of the thermal management device for the vehicle power amplifier host provided by the present application are the same as the beneficial effects of the thermal management method for the vehicle power amplifier host provided by the above-mentioned embodiment, and the other technical features in the thermal management device for the vehicle power amplifier host are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0069] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0070] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0071] The present application also provides a storage medium, on which a vehicle-mounted power amplifier host thermal management program is stored. When the vehicle-mounted power amplifier host thermal management program is executed by a processor, the steps of the vehicle-mounted power amplifier host thermal management method described in any one of the above are implemented.

[0072] The storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM: Random Access Memory), a read-only memory (ROM: Read Only Memory), an erasable programmable read-only memory (EPROM: Erasable Programmable Read Only Memory or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM: CD-Read Only Memory), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, system or device. The program code contained on the storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency: Radio Frequency), etc., or any suitable combination of the above.

[0073] The above storage medium may be included in the thermal management device of the vehicle-mounted power amplifier host; or it may exist independently without being assembled into the thermal management device of the vehicle-mounted power amplifier host.

[0074] The above-mentioned computer-readable storage medium carries one or more programs. When the above-mentioned one or more programs are executed by the vehicle-mounted power amplifier host thermal management device, the vehicle-mounted power amplifier host thermal management device: determines the output power based on the cached audio data stream; obtains the heating power of the power amplifier host based on the output power and the host operation mode; and obtains the target heat dissipation power based on the heating power of the power amplifier host.

[0075] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0076] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0077] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0078] The storage medium provided in the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned vehicle-mounted power amplifier host thermal management method, and can solve the technical problem of how to design a system that can adjust the heat dissipation power in real time according to the characteristics and power requirements of the audio signal, and eliminate the lag between heat generation and heat dissipation. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in the present application are the same as the beneficial effects of the vehicle-mounted power amplifier host thermal management method provided in the above-mentioned embodiment, and will not be repeated here.

[0079] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A thermal management method for a vehicle-mounted power amplifier host, characterized in that: The vehicle-mounted power amplifier host thermal management method comprises: Determine output power according to the buffered audio data stream; According to the output power and the host operation mode, the heating power of the power amplifier host is obtained; According to the heating power of the power amplifier host, a target heat dissipation power is obtained; The power amplifier host is cooled according to the target heat dissipation power to achieve non-hysteresis thermal management of heat generation and heat dissipation of the power amplifier host.

2. The thermal management method of a vehicle-mounted power amplifier host according to claim 1, characterized in that: The step of determining the output power according to the buffered audio data stream includes: According to the buffered audio data stream, obtaining sound frequency information and sound loudness information of the data stream; The output power is determined according to the sound frequency information and the sound loudness information.

3. The thermal management method of the vehicle-mounted power amplifier host according to claim 2, characterized in that: The step of determining the output power according to the sound frequency information and the sound loudness information includes: According to the sound loudness information and the reference loudness, the loudness amplification factor is obtained: Obtaining a frequency factor according to the sound frequency information and the frequency response efficiency curve; The output power is determined according to the loudness amplification factor, the frequency factor and the reference working power.

4. The thermal management method of a vehicle-mounted power amplifier host according to claim 2, characterized in that: After determining the output power according to the sound frequency information and the sound loudness information, the method further includes: If the low frequency ratio in the sound frequency information is higher than a preset ratio, or the high loudness ratio in the sound loudness information is higher than a preset ratio, the working mode of the power amplifier host is adjusted according to the output power.

5. The thermal management method of a vehicle-mounted power amplifier host according to claim 1, characterized in that: The step of obtaining the heating power of the power amplifier host according to the output power and the host operation mode includes: According to the output power and the host operation mode, the host operating efficiency is obtained; The heating power of the power amplifier host is obtained according to the host working efficiency and the real-time power consumption.

6. The thermal management method of a vehicle-mounted power amplifier host according to claim 4, characterized in that: The obtaining the host operating efficiency according to the output power and the host operating mode includes: Determining a load efficiency curve according to the host operation mode; The host operating efficiency is obtained according to the output power and load efficiency curve.

7. The thermal management method of a vehicle-mounted power amplifier host according to claim 1, characterized in that: The step of obtaining a target heat dissipation power according to the heat generation power of the power amplifier host comprises: The heat generation power of the power amplifier host is used as the reference heat dissipation power; According to the real-time ambient temperature and the temperature collected by the power amplifier host, the heat dissipation temperature difference is obtained; The target heat dissipation power is obtained according to the heat dissipation temperature difference and the reference heat dissipation power.

8. A thermal management device for a vehicle-mounted power amplifier host, characterized in that: The vehicle-mounted power amplifier host thermal management device comprises: A data processing module, used for determining output power according to the buffered audio data stream; The data processing module is further used to obtain the heating power of the power amplifier host according to the output power and the host operation mode; A heat dissipation control module, used to obtain a target heat dissipation power according to the heat generation power of the power amplifier host; The heat dissipation control module is further used to dissipate heat for the power amplifier host according to the target heat dissipation power, so as to achieve non-hysteresis thermal management of heat generation and heat dissipation of the power amplifier host.

9. A thermal management device for a vehicle-mounted power amplifier host, characterized in that: The vehicle-mounted power amplifier host thermal management device includes: a memory, a processor, and a vehicle-mounted power amplifier host thermal management program stored in the memory and executable on the processor, wherein the vehicle-mounted power amplifier host thermal management program is configured to implement the steps of the vehicle-mounted power amplifier host thermal management method as described in any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium stores a thermal management program for a vehicle power amplifier host, and when the thermal management program for the vehicle power amplifier host is executed by the processor, the steps of the thermal management method for a vehicle power amplifier host as claimed in any one of claims 1 to 7 are implemented.

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