Vehicle-mounted power amplifier redundancy control method, system and device and storage medium

Abstract

The invention discloses a vehicle-mounted power amplifier redundancy control method, system and device and a storage medium. The method comprises the following steps: configuring two standby power amplifier control paths which are mutually redundant with two host power amplifier control paths for vehicle-mounted equipment; monitoring the working states of the two host power amplifier control paths in real time; according to the two working states, whether the corresponding host power amplifier control channels are abnormal or not is judged; when at least one host power amplifier control channel is abnormal, the two host power amplifier control channels are controlled to be disconnected, and the two standby power amplifier control channels are controlled to be connected, so that the first standby power amplifier control channel is used for controlling the left loudspeaker to play sound, and the second standby power amplifier control channel is used for controlling the right loudspeaker to play sound. According to the invention, the phenomenon that only one loudspeaker broadcasts and the other loudspeaker is silent when one power amplifier chip is abnormal in a dual-power-amplifier playing mode of the vehicle-mounted broadcast can be effectively avoided.

Description

Technical Field

[0001] The present invention relates to the field of vehicle-mounted control technology, and in particular to a vehicle-mounted power amplifier redundant control method, system, device and storage medium. Background Art

[0002] Speakers are an indispensable part of vehicle-mounted equipment. In order to better listen to voice signals such as broadcasts, vehicle-mounted equipment usually has one speaker on both sides. For example, in a subway, there is one speaker on the left and right sides of the train. These two speakers are used to play the voice signals of the subway broadcasting system, such as arrival information, to facilitate passengers' travel.

[0003] The two-way speakers in the vehicle-mounted equipment are controlled by different amplifier chips. When an abnormality occurs in the path where one of the amplifier chips is located (such as communication abnormality, output data abnormality, etc.), the corresponding speaker cannot play normally, and there will be a situation where only one side broadcasts and the other side is silent, which seriously affects the user experience. In this case, you can only wait for hardware maintenance to solve the problem. Therefore, a control solution is urgently needed to avoid the situation where only one side of the broadcast has sound, helping to improve the user experience. Summary of the invention

[0004] In view of this, the present invention provides a vehicle-mounted power amplifier redundant control method, system, device and storage medium to solve the problem in the existing vehicle-mounted power amplifier technology that when one of the power amplifier chips is abnormal, only one side of the speaker broadcasts while the other side is silent.

[0005] The present invention provides a vehicle-mounted power amplifier redundancy control method, wherein the vehicle-mounted device is provided with a left speaker, a right speaker and two host power amplifier control paths, wherein the first host power amplifier control path is used to control the left speaker to play sound, and the second host power amplifier control path is used to control the right speaker to play sound;

[0006] The method comprises:

[0007] Two backup power amplifier control paths which are redundant with the two host power amplifier control paths are configured for the vehicle-mounted device; wherein the first backup power amplifier control path is used to control the left speaker to play sound, and the second backup power amplifier control path is used to control the right speaker to play sound;

[0008] Real-time monitoring of the working status of the two host power amplifier control paths;

[0009] According to the working status of the two paths respectively, determining whether the corresponding host power amplifier control path is abnormal;

[0010] When at least one of the host power amplifier control paths is abnormal, the two host power amplifier control paths are controlled to be disconnected, and the two backup power amplifier control paths are controlled to be connected, so that the first backup power amplifier control path is used to control the left speaker to play sound and the second backup power amplifier control path is used to control the right speaker to play sound.

[0011] Optionally, the working state includes a fault level signal at the input end of the host power amplifier control path;

[0012] According to the working states of the two paths respectively, judging whether the corresponding host power amplifier control path is abnormal includes:

[0013] Determine whether the fault level signals at the input ends of the two host power amplifier control paths meet a first preset condition;

[0014] When the fault level signal meets the first preset condition, it is determined that an abnormality occurs in the corresponding host power amplifier control path.

[0015] Optionally, the first preset condition is specifically:

[0016] The fault level signal is switched to a low level signal, or the fault level signal is switched to a high level signal.

[0017] Optionally, the working state includes a current sampling signal at an output end of the host power amplifier control path;

[0018] According to the working states of the two paths respectively, judging whether the corresponding host power amplifier control path is abnormal includes:

[0019] Respectively determine whether the current sampling signals at the output ends of the two host power amplifier control paths meet a second preset condition;

[0020] When the current sampling signal satisfies the second preset condition, it is determined that an abnormality occurs in the corresponding host power amplifier control path.

[0021] Optionally, the second preset condition is specifically:

[0022] The current sampling signal exceeds a preset threshold.

[0023] Optionally, the vehicle-mounted device is further provided with a host watchdog reset module, and both host power amplifier control paths are electrically connected to the host watchdog reset module;

[0024] The working state includes a communication signal between the host power amplifier control path and the host watchdog reset module;

[0025] According to the working states of the two paths respectively, judging whether the corresponding host power amplifier control path is abnormal includes:

[0026] respectively determining whether the two host power amplifier control paths receive the communication signal sent by the host watchdog reset module;

[0027] When the host power amplifier control path does not receive the corresponding communication signal, determining that the corresponding host power amplifier control path is abnormal;

[0028] The communication signal is specifically a reset control signal sent by the host watchdog reset module to the host power amplifier control path.

[0029] Optionally, the method further comprises:

[0030] Configure a host monitoring module for the two host power amplifier control paths, and configure a standby monitoring module for the two standby power amplifier control paths;

[0031] When the two host amplifier control paths are normal, the host monitoring module is used to monitor the sound of the left speaker and the right speaker respectively;

[0032] When at least one of the host power amplifier control paths is abnormal, the standby monitoring module is used to monitor the sound of the left speaker and the right speaker respectively.

[0033] In addition, the present invention also provides a vehicle-mounted power amplifier redundant control system, wherein the vehicle-mounted device is provided with a left speaker, a right speaker and two host power amplifier control paths, wherein the first host power amplifier control path is used to control the left speaker to play sound, and the second host power amplifier control path is used to control the right speaker to play sound; the vehicle-mounted power amplifier redundant control method mentioned above includes:

[0034] A standby power amplifier configuration module is used to configure two standby power amplifier control paths for the vehicle-mounted device; wherein the first standby power amplifier control path is used to control the left speaker to play sound, and the second standby power amplifier control path is used to control the right speaker to play sound;

[0035] A host power amplifier monitoring module, used for real-time monitoring of the working status of the two host power amplifier control paths;

[0036] The redundant control module is used to determine whether the corresponding host power amplifier control path is abnormal according to the two working states; when at least one of the host power amplifier control paths is abnormal, the two host power amplifier control paths are controlled to be disconnected, and the two backup power amplifier control paths are controlled to be connected, so that the first backup power amplifier control path is used to control the left speaker to play sound and the second backup power amplifier control path is used to control the right speaker to play sound.

[0037] In addition, the present invention also provides a vehicle-mounted power amplifier redundancy control device, including a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the method steps in the aforementioned vehicle-mounted power amplifier redundancy control method when executed.

[0038] In addition, the present invention also provides a computer storage medium, which includes: at least one instruction, and when the instruction is executed by a computer, the method steps in the above-mentioned vehicle-mounted power amplifier redundancy control method are implemented.

[0039] The beneficial effects of the present invention are as follows: first, by configuring two spare power amplifier control paths that are redundant with the two host power amplifier control paths for the vehicle-mounted equipment, it is convenient to switch to the two spare power amplifier control paths to perform work when an abnormality occurs in any of the host power amplifier control paths, that is, use the two spare power amplifier control paths to respectively control the left speaker and the right speaker to play sound; then, by real-time monitoring the working status of the two host power amplifier control paths, the abnormality analysis of the two host power amplifiers can be realized. When at least one of the host power amplifiers is abnormal, the two host power amplifiers are cut off and replaced with the two spare power amplifiers to realize dual-amplification broadcasting; the present invention can effectively avoid the phenomenon that in the dual-amplification playback mode of the vehicle-mounted broadcast, when one of the power amplifier chips is abnormal, only one speaker broadcasts while the other is silent, and can always ensure that the two speakers can play the vehicle-mounted broadcast normally, effectively improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, which are schematic and should not be construed as limiting the present invention in any way. In the accompanying drawings:

[0041] Figure 1 A flow chart of a vehicle-mounted power amplifier redundancy control method in Embodiment 1 of the present invention is shown;

[0042] Figure 2 It shows a flow chart for determining whether an abnormality occurs in the host power amplifier control path in the first optional embodiment of the present invention;

[0043] Figure 3It shows a flow chart for determining whether an abnormality occurs in the host power amplifier control path in a second optional embodiment of the present invention;

[0044] Figure 4 It shows a flowchart for determining whether an abnormality occurs in the host power amplifier control path in the third optional embodiment of the present invention;

[0045] Figure 5 A schematic structural diagram of a vehicle-mounted power amplifier redundant control system in Embodiment 2 of the present invention is shown. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0047] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0048] Vehicle-mounted equipment includes subways, trains, etc. These vehicle-mounted equipment usually have a speaker on both sides, namely the left speaker and the right speaker. The two speakers are controlled by two host amplifier control channels set on the vehicle-mounted equipment to play the vehicle radio. Among them, the first host amplifier control channel is used to control the sound played by the left speaker, and the second host amplifier control channel is used to control the sound played by the right speaker (among which, the first and second of the two host amplifier control channels can be customized).

[0049] However, in actual practice, the host power amplifier control path may be abnormal. When one of the host power amplifier control paths is abnormal, although the vehicle-mounted device can still play the broadcast, only one speaker can play the broadcast while the other speaker is silent, which will affect the user's reception of the broadcast to a certain extent, and even cause the user to miss important broadcast information, thereby seriously affecting the user's experience. To solve the above problems, the present invention proposes the following vehicle-mounted power amplifier redundant control method, system, device and storage medium.

[0050] For ease of explanation, the vehicle-mounted equipment in the following embodiments takes a motor vehicle as an example.

[0051] Embodiment 1

[0052] like Figure 1 As shown, a vehicle-mounted power amplifier redundancy control method, the method comprising:

[0053] S1: configuring two spare power amplifier control paths for the vehicle-mounted device that are redundant with the two host power amplifier control paths; wherein the first spare power amplifier control path is used to control the left speaker to play sound, and the second spare power amplifier control path is used to control the right speaker to play sound;

[0054] S2: real-time monitoring of the working status of the two host power amplifier control paths;

[0055] S3: judging whether the corresponding host power amplifier control path is abnormal according to the working status of the two paths respectively;

[0056] S4: When at least one of the host power amplifier control paths is abnormal, the two host power amplifier control paths are controlled to be disconnected, and the two backup power amplifier control paths are controlled to be connected, so that the first backup power amplifier control path is used to control the left speaker to play sound and the second backup power amplifier control path is used to control the right speaker to play sound.

[0057] In this embodiment, firstly, two backup power amplifier control paths that are redundant with the two host power amplifier control paths are configured for the vehicle-mounted device, so that when an abnormality occurs in any of the host power amplifier control paths, the two backup power amplifier control paths can be switched to perform work, that is, the two backup power amplifier control paths are used to control the left speaker and the right speaker to play sound respectively; then, by real-time monitoring of the working status of the two host power amplifier control paths, abnormal analysis of the two host power amplifiers can be achieved. When an abnormality occurs in at least one host power amplifier, the two host power amplifiers are cut off and replaced with the two backup power amplifiers to achieve dual-amplifier broadcasting.

[0058] This embodiment can effectively avoid the phenomenon that in the dual-amplifier playback mode of the car radio, when one of the power amplifier chips is abnormal, only one side of the speaker broadcasts while the other side is silent. It can always ensure that both speakers can play the car radio normally, effectively improving the user experience.

[0059] It should be understood that the host power amplifier control path of this embodiment can be designed in hardware according to actual conditions. For example, the host power amplifier control path includes a power amplifier circuit, a filter circuit and a switch circuit. In the two host power amplifier control paths, the power amplifier circuit and the switch circuit can receive corresponding control instructions (the power amplifier circuit can realize functions such as sound adjustment according to the control instructions, and the switch circuit can realize the on-off function of the path according to the control instructions), receive audio signals through the power amplifier circuit, and transmit audio signals to the corresponding speakers through the power amplifier circuit, the filter circuit and the switch circuit in turn to realize sound playback. Among them, the specific circuit design of the power amplifier circuit, the filter circuit and the switch circuit is not limited here.

[0060] In this embodiment S1, two backup power amplifier control paths are configured for the vehicle-mounted device, which are redundant with the host power amplifier control path and can adopt the same hardware design as the host power amplifier control path, so as to better realize redundant control.

[0061] In a first optional embodiment, the working state in S2 includes a fault level signal at the input end of the host power amplifier control path.

[0062] Correspondingly, if Figure 2 As shown, S3 includes:

[0063] S3A1: respectively determining whether the fault level signals at the input ends of the two host power amplifier control paths meet a first preset condition;

[0064] S3A2: When the fault level signal meets the first preset condition, it is determined that an abnormality occurs in the corresponding host power amplifier control path.

[0065] The fault level signal at the input end of the host power amplifier control path can reflect the abnormal situation of the power amplifier chip or related circuits in the entire host power amplifier control path. For example, when overheating, overcurrent, overvoltage or short circuit to ground occurs, the fault level signal will change from a normal level signal to a high level signal or from a normal level signal to a low level signal; therefore, by real-time monitoring of the fault level signal at the input end and determining whether it meets the first preset condition, it can be determined whether the corresponding host power amplifier control path has an abnormality, and then the redundant control of the vehicle-mounted dual power amplifier can be efficiently and accurately realized, avoiding the phenomenon that only one speaker on one side is broadcasting while the other side is silent.

[0066] In the first optional embodiment above, the first preset condition is specifically:

[0067] The fault level signal is switched to a low level signal, or the fault level signal is switched to a high level signal.

[0068] Through the above-mentioned first preset condition, the abnormal analysis and judgment of the host power amplifier control path can be realized quickly and accurately, and then it can be determined whether to switch to the backup power amplifier control path to control the two players to play the sound, thereby realizing precise redundant control.

[0069] It should be understood that switching the fault level signal to a low level signal as the first preset condition or switching the fault level signal to a high level signal as the first preset condition can be selected according to actual conditions. In this embodiment, switching the fault level signal to a low level signal is used as the first preset condition, that is, when both host power amplifier control paths are normal, the fault level signals at the two input ends are both high level signals, and when at least one host power amplifier control path is abnormal, the fault level signal at its input end is switched to a low level signal.

[0070] For the first optional embodiment described above, when the fault level signal does not meet the first preset condition, it is determined that the corresponding host power amplifier control path has no abnormality; when both host power amplifier control paths have no abnormality, the two host power amplifier control paths are maintained conductive.

[0071] Specifically, for the first optional embodiment described above, a fault signal detection circuit can be provided at the input end of each host power amplifier control path to achieve real-time monitoring of the fault level signal. The fault signal detection circuit can select a suitable hardware circuit design according to actual conditions, and is not limited here.

[0072] In a second optional embodiment, the working state in S2 includes a current sampling signal at the output end of the host power amplifier control path.

[0073] Correspondingly, if Figure 3 As shown, S3 includes:

[0074] S3B1: respectively determining whether the current sampling signals at the output ends of the two host power amplifier control paths meet a second preset condition;

[0075] S3B2: When the current sampling signal satisfies the second preset condition, it is determined that an abnormality occurs in the corresponding host power amplifier control path.

[0076] The current sampling signal at the output end of the host power amplifier control path can also reflect the abnormal conditions of the power amplifier chip or related circuits in the entire host power amplifier control path. For example, when there is load mismatch, power supply abnormality, wiring abnormality, etc., the current sampling signal will increase or have no output; therefore, by real-time monitoring of the current sampling signal at the output end and determining whether it meets the second preset condition, it can be determined whether the corresponding host power amplifier control path has an abnormality, and then the redundant control of the vehicle-mounted dual power amplifier can be efficiently and accurately realized, avoiding the phenomenon that only one side of the speaker is broadcasting while the other side is silent.

[0077] In the above second optional embodiment, the second preset condition is specifically:

[0078] The current sampling signal exceeds a preset threshold.

[0079] Similar to the first preset condition, through the above-mentioned second preset condition, the abnormal analysis and judgment of the host power amplifier control path can be realized quickly and accurately, and then it can be determined whether to switch to the backup power amplifier control path to control the two players to play sound, thereby realizing precise redundant control.

[0080] It should be understood that the preset threshold of this embodiment can be set according to actual conditions, for example, set to [A1, A2]. When the detected current sampling signal is not within [A1, A2], that is, exceeds the preset threshold, it can be determined that the corresponding host power amplifier control path is abnormal.

[0081] For the above-mentioned second optional embodiment, when the current sampling signal does not meet the second preset condition, it is determined that the corresponding host power amplifier control path has no abnormality; when both host power amplifier control paths have no abnormality, the two host power amplifier control paths are maintained conductive.

[0082] Specifically, for the second optional embodiment described above, a current detection circuit can be provided at the output end of each host power amplifier control path to achieve real-time monitoring of the current sampling signal. The current detection circuit can select a suitable hardware circuit design according to actual conditions, and is not limited here.

[0083] In a third optional embodiment, the vehicle-mounted device is further provided with a host watchdog reset module, and both host power amplifier control paths are electrically connected to the host watchdog reset module;

[0084] The working state in S2 includes the communication signal between the host power amplifier control path and the host watchdog reset module.

[0085] Correspondingly, if Figure 4 As shown, S3 includes:

[0086] S3C1: respectively determining whether the two host power amplifier control paths receive the communication signal sent by the host watchdog reset module;

[0087] S3C2: when the host power amplifier control path does not receive the corresponding communication signal, determining that the corresponding host power amplifier control path is abnormal;

[0088] The communication signal is specifically a reset control signal sent by the host watchdog reset module to the host power amplifier control path.

[0089] In order to prevent the entire dual-amplifier playback system of the vehicle-mounted device from being abnormal, a host watchdog reset module is usually configured. The host watchdog reset module can perform periodic status monitoring of the system. When the system crashes, shuts down, or other abnormalities occur, it can automatically detect and trigger the system reset operation by sending a reset control signal to restore the system abnormality and ensure the reliability and stability of the system. Therefore, whether the host power amplifier control path receives the communication signal (specifically the reset control signal) sent by the host watchdog reset module can also reflect the communication status of the host power amplifier control path. When the communication signal sent by the host watchdog reset module is not received, it means that the corresponding host power amplifier control path has a communication abnormality; therefore, by real-time monitoring whether the host power amplifier control path receives the communication signal, it can be determined whether the corresponding host power amplifier control path has an abnormality, and then the redundant control of the vehicle-mounted dual power amplifier can be realized efficiently and accurately, avoiding the phenomenon that only one speaker is broadcasting while the other side is silent.

[0090] For the third optional embodiment described above, when the host power amplifier control path receives the corresponding communication signal, it is determined that the corresponding host power amplifier control path has no abnormality; when both host power amplifier control paths have no abnormality, the two host power amplifier control paths are maintained connected.

[0091] The abnormality analyses described in the three optional embodiments can also be used in combination, that is, as long as at least one host power amplifier control path has an abnormal fault level signal and / or an abnormal current sampling signal and / or an abnormal communication signal, it can be determined that the host power amplifier control path has an abnormality, and then the two backup power amplifier control paths are switched on. The redundant control of the two backup power amplifier control paths can effectively avoid the phenomenon that when one of the power amplifier chips has an abnormality in the dual-amplification playback mode of the car radio, only one side of the speaker broadcasts while the other side is silent, thereby effectively ensuring the user experience.

[0092] Preferably, the method further comprises:

[0093] S5: configuring a host monitoring module for the two host power amplifier control paths, and configuring a standby monitoring module for the two standby power amplifier control paths;

[0094] S6: When both host power amplifier control paths are normal, the host monitoring module is used to monitor the sound of the left speaker and the right speaker respectively; when at least one host power amplifier control path is abnormal, the backup monitoring module is used to monitor the sound of the left speaker and the right speaker respectively.

[0095] Through the host monitoring module configured as above, broadcast monitoring in dual-amplifier playback mode can be realized when both host power amplifier control channels are normal; through the standby monitoring module configured as a redundant standby power amplifier control channel, broadcast monitoring in dual-amplifier playback mode can also be realized during redundant control; through the above-mentioned broadcast monitoring, real-time calibration and data traceability of vehicle-mounted radio can be easily realized, which is conducive to improving the management of vehicle-mounted radio and further enhancing the user experience.

[0096] Among them, the host monitoring module can carry out appropriate hardware circuit design according to actual conditions, collect and process audio signals from the two host power amplifier control paths and the two players, and realize broadcast monitoring; the backup monitoring module can choose the same hardware circuit design as the host monitoring module, and there are no specific restrictions here.

[0097] In addition, when both host power amplifier control paths are normal, the two host power amplifier control paths are maintained connected, and control instructions (such as volume adjustment, muting, etc.) can be sent to the two host power amplifier control paths respectively. The two host power amplifier control paths can optimize the sound playback of the two speakers by responding to the control instructions; when at least one host power amplifier control path is abnormal, the two backup power amplifier control paths are switched on, and control instructions (such as volume adjustment, muting, etc.) can be sent to the two backup power amplifier control paths respectively. The two backup power amplifier control paths can also optimize the sound playback of the two speakers by responding to the control instructions.

[0098] Embodiment 2

[0099] like Figure 5 As shown, a vehicle-mounted power amplifier redundant control system, the vehicle-mounted equipment is provided with a left speaker, a right speaker and two host power amplifier control paths, the first host power amplifier control path is used to control the left speaker to play sound, and the second host power amplifier control path is used to control the right speaker to play sound; applied to the vehicle-mounted power amplifier redundant control method of embodiment 1, comprising:

[0100] A standby power amplifier configuration module is used to configure two standby power amplifier control paths for the vehicle-mounted device; wherein the first standby power amplifier control path is used to control the left speaker to play sound, and the second standby power amplifier control path is used to control the right speaker to play sound;

[0101] A host power amplifier monitoring module, used for real-time monitoring of the working status of the two host power amplifier control paths;

[0102] The redundant control module is used to determine whether the corresponding host power amplifier control path is abnormal according to the two working states; when at least one of the host power amplifier control paths is abnormal, the two host power amplifier control paths are controlled to be disconnected, and the two backup power amplifier control paths are controlled to be connected, so that the first backup power amplifier control path is used to control the left speaker to play sound and the second backup power amplifier control path is used to control the right speaker to play sound.

[0103] In this embodiment, first, two spare power amplifier control paths that are redundant with the two host power amplifier control paths are configured for the vehicle-mounted device through the spare power amplifier configuration module, so that when an abnormality occurs in any of the host power amplifier control paths, the two spare power amplifier control paths can be switched to perform work, that is, the two spare power amplifier control paths are used to control the left speaker and the right speaker to play sound respectively; then, the host power amplifier monitoring module is used to monitor the working status of the two host power amplifier control paths in real time, which can facilitate the use of the redundant control module to realize abnormal analysis of the two host power amplifiers. When at least one host power amplifier is abnormal, the two host power amplifiers are cut off through the redundant control module and replaced with two spare power amplifiers to realize dual-amplifier broadcasting.

[0104] This embodiment can effectively avoid the phenomenon that in the dual-amplifier playback mode of the car radio, when one of the power amplifier chips is abnormal, only one side of the speaker broadcasts while the other side is silent. It can always ensure that both speakers can play the car radio normally, effectively improving the user experience.

[0105] The functions of the vehicle-mounted power amplifier redundant control system described in this embodiment correspond to the steps of the vehicle-mounted power amplifier redundant control method in Example 1. For details not included in this embodiment, please refer to Example 1 and Figures 1 to 4 The detailed description will not be repeated here.

[0106] Embodiment 3

[0107] A vehicle-mounted power amplifier redundancy control device comprises a processor, a memory and a computer program stored in the memory and executable on the processor, wherein the computer program implements the method steps in the vehicle-mounted power amplifier redundancy control method of embodiment 1 when executed.

[0108] By storing a computer program in a memory and running it on a processor, it is possible to effectively avoid the situation in which, in the dual-amplifier playback mode of the car radio, when one of the amplifier chips is abnormal, only one speaker broadcasts while the other is silent. This ensures that both speakers can play the car radio normally at all times, effectively improving the user experience.

[0109] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. The processor is the control center of a computer device, and uses various interfaces and lines to connect various parts of the entire computer device.

[0110] The memory can be used to store computer programs and / or models. The processor realizes various functions of the computer device by running or executing the computer programs and / or models stored in the memory, and calling the data stored in the memory. The memory can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system and at least one application required for a function (such as a sound playback function, an image playback function, etc.); the data storage area can store data created according to the use of the mobile phone (such as audio data, video data, etc.). In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (SmartMedia Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0111] It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by a computer program. These computer programs can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1A device that provides the functions specified in a block or multiple blocks.

[0112] These computer programs may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0113] These computer programs can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0114] This embodiment further provides a computer storage medium, which includes: at least one instruction, which implements the method steps in the vehicle-mounted power amplifier redundancy control method of embodiment 1 when the instruction is executed by the computer.

[0115] By executing a computer storage medium containing at least one instruction, the phenomenon that only one speaker broadcasts while the other is silent when one of the amplifier chips is abnormal in the dual-amplifier playback mode of the car radio can be effectively avoided. This ensures that both speakers can play the car radio normally at all times, effectively improving the user experience.

[0116] Similarly, for details not yet included in the third embodiment, please refer to the first embodiment, the second embodiment and the Figures 1 to 5 The detailed description will not be repeated here.

[0117] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A vehicle-mounted power amplifier redundancy control method, characterized in that: The vehicle-mounted device is provided with a left speaker, a right speaker and two host power amplifier control paths, wherein the first host power amplifier control path is used to control the left speaker to play sound, and the second host power amplifier control path is used to control the right speaker to play sound; The method comprises: Two backup power amplifier control paths which are redundant with the two host power amplifier control paths are configured for the vehicle-mounted device; wherein the first backup power amplifier control path is used to control the left speaker to play sound, and the second backup power amplifier control path is used to control the right speaker to play sound; Real-time monitoring of the working status of the two host power amplifier control paths; According to the working status of the two paths respectively, determining whether the corresponding host power amplifier control path is abnormal; When at least one of the host power amplifier control paths is abnormal, the two host power amplifier control paths are controlled to be disconnected, and the two backup power amplifier control paths are controlled to be connected, so that the first backup power amplifier control path is used to control the left speaker to play sound and the second backup power amplifier control path is used to control the right speaker to play sound.

2. The vehicle-mounted power amplifier redundancy control method according to claim 1, characterized in that: The working state includes a fault level signal at the input end of the host power amplifier control path; According to the working states of the two paths respectively, judging whether the corresponding host power amplifier control path is abnormal includes: Determine whether the fault level signals at the input ends of the two host power amplifier control paths meet a first preset condition; When the fault level signal meets the first preset condition, it is determined that an abnormality occurs in the corresponding host power amplifier control path.

3. The vehicle-mounted power amplifier redundancy control method according to claim 2, characterized in that: The first preset condition is specifically: The fault level signal is switched to a low level signal, or the fault level signal is switched to a high level signal.

4. The vehicle-mounted power amplifier redundancy control method according to claim 1, characterized in that: The working state includes a current sampling signal at the output end of the host power amplifier control path; According to the working states of the two paths respectively, judging whether the corresponding host power amplifier control path is abnormal includes: Respectively determine whether the current sampling signals at the output ends of the two host power amplifier control paths meet a second preset condition; When the current sampling signal satisfies the second preset condition, it is determined that an abnormality occurs in the corresponding host power amplifier control path.

5. The vehicle-mounted power amplifier redundancy control method according to claim 4, characterized in that: The second preset condition is specifically: The current sampling signal exceeds a preset threshold.

6. The vehicle-mounted power amplifier redundancy control method according to claim 1, characterized in that: The vehicle-mounted device is also provided with a host watchdog reset module, and both host power amplifier control paths are electrically connected to the host watchdog reset module; The working state includes a communication signal between the host power amplifier control path and the host watchdog reset module; According to the working states of the two paths respectively, judging whether the corresponding host power amplifier control path is abnormal includes: respectively determining whether the two host power amplifier control paths receive the communication signal sent by the host watchdog reset module; When the host power amplifier control path does not receive the corresponding communication signal, determining that the corresponding host power amplifier control path is abnormal; The communication signal is specifically a reset control signal sent by the host watchdog reset module to the host power amplifier control path.

7. The vehicle-mounted power amplifier redundancy control method according to any one of claims 1 to 6, characterized in that: The method further comprises: Configure a host monitoring module for the two host power amplifier control paths, and configure a standby monitoring module for the two standby power amplifier control paths; When the two host amplifier control paths are normal, the host monitoring module is used to monitor the sound of the left speaker and the right speaker respectively; When at least one of the host power amplifier control paths is abnormal, the standby monitoring module is used to monitor the sound of the left speaker and the right speaker respectively.

8. A vehicle-mounted power amplifier redundant control system, characterized in that: The vehicle-mounted device is provided with a left speaker, a right speaker and two host power amplifier control paths, wherein the first host power amplifier control path is used to control the left speaker to play sound, and the second host power amplifier control path is used to control the right speaker to play sound; The method for controlling redundant vehicle amplifiers according to any one of claims 1 to 7 comprises: A standby power amplifier configuration module is used to configure two standby power amplifier control paths for the vehicle-mounted device; wherein the first standby power amplifier control path is used to control the left speaker to play sound, and the second standby power amplifier control path is used to control the right speaker to play sound; A host power amplifier monitoring module, used for real-time monitoring of the working status of the two host power amplifier control paths; The redundant control module is used to determine whether the corresponding host power amplifier control path is abnormal according to the two working states; when at least one of the host power amplifier control paths is abnormal, the two host power amplifier control paths are controlled to be disconnected, and the two backup power amplifier control paths are controlled to be connected, so that the first backup power amplifier control path is used to control the left speaker to play sound and the second backup power amplifier control path is used to control the right speaker to play sound.

9. A vehicle-mounted power amplifier redundant control device, characterized in that: The method comprises a processor, a memory and a computer program stored in the memory and executable on the processor, wherein the computer program implements the method steps according to any one of claims 1 to 7 when executed.

10. A computer storage medium, characterized in that: The computer storage medium comprises: at least one instruction, which implements the method steps according to any one of claims 1 to 7 when the instruction is executed by a computer.

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