Vehicle-mounted audio system
By combining the vehicle central control module, Ethernet switching module, and regional control module, the problem of high development cost of power amplifiers is solved, efficient audio data processing and output are achieved, and hardware integration requirements are reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-03-24
AI Technical Summary
The development cost of power amplifiers in existing in-vehicle audio systems is high, mainly because each independent power amplifier requires the integration of multiple hardware components.
It adopts a combined design of vehicle central control module, Ethernet switching module and regional control module. Audio data is transmitted through Ethernet switching module and power amplifier chip is integrated in regional control module, which reduces the need for additional hardware components.
This effectively reduced the development cost of power amplifiers while ensuring high-quality processing and output of audio data.
Smart Images
Figure CN224028940U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of automobile electronic technology especially relates to a vehicle-mounted audio system. BACKGROUND
[0002] With the development of automobile intelligence, the demand for vehicle-mounted audio systems is also increasing, especially in high-end cars, sound quality and audio experience have become one of the important factors for consumers to choose cars. In order to meet this demand, the vehicle-mounted audio system usually needs a high-quality power amplifier to improve the output capability of the audio signal, so as to ensure clear sound effect.
[0003] At present, the power amplifier in the vehicle-mounted audio system is usually designed as an independent electronic control unit, and the audio data is transmitted from the vehicle-mounted host to the power amplifier through the automobile audio bus, and the processed data is transmitted back to the vehicle-mounted audio system through the power amplifier. This way usually integrates multiple hardware components on the electronic control unit, such as microcontroller chips, serial communication protocol bus transceivers, automobile audio bus chips, power management chips, etc., to ensure smooth connection of the power amplifier and the vehicle-mounted audio system. However, each independent power amplifier needs to increase a large number of hardware components, resulting in increased development cost of the power amplifier.
[0004] Therefore, how to reduce the development cost of the power amplifier has become a problem to be solved in the field. UTILITY MODEL CONTENT
[0005] In view of the above problems, the utility model provides a vehicle-mounted audio system to realize the purpose of reducing the development cost of the power amplifier. The specific scheme is as follows:
[0006] The utility model provides a vehicle-mounted audio system, the vehicle-mounted audio system includes: vehicle-mounted central control module, ethernet exchange module and area control module;
[0007] The input and output end of the vehicle-mounted central control module is connected with the first input and output end of the ethernet exchange module;The vehicle-mounted central control module is used for outputting audio data;The ethernet exchange module is used for transmitting the audio data;
[0008] The second input and output end of the ethernet exchange module is connected with the first input and output end of the area control module, the third input and output end of the ethernet exchange module is connected with the second input and output end of the area control module, and the fourth input and output end of the ethernet exchange module is connected with the third input and output end of the area control module;The area control module is used for amplifying the audio data;The three input and output ends of the area control module correspond to different channels respectively.
[0009] In a possible implementation, the vehicle-mounted central control module comprises a system on chip and a first physical layer master chip.
[0010] An output end of the system on chip is connected with an input end of the first physical layer master chip, and an input and output end of the first physical layer master chip is connected with a first input and output end of the Ethernet switch module.
[0011] In a possible implementation, the vehicle-mounted central control module further comprises a first CAN bus.
[0012] An output end of the first CAN bus is connected with an input end of the area control module, and the first CAN bus is used for sending a control instruction to the area control module.
[0013] In a possible implementation, the Ethernet switch module comprises a first physical layer slave chip, a second physical layer slave chip and a third physical layer slave chip.
[0014] An input and output end of the first physical layer slave chip is connected with a first input and output end of the area control module, an input and output end of the second physical layer slave chip is connected with a second input and output end of the area control module, and an input and output end of the third physical layer slave chip is connected with a third input and output end of the area control module.
[0015] In a possible implementation, the area control module comprises a left area controller, a right area controller and a rear area controller.
[0016] An input and output end of the left area controller is connected with a second input and output end of the Ethernet switch module.
[0017] An input and output end of the right area controller is connected with a third input and output end of the Ethernet switch module.
[0018] An input and output end of the rear area controller is connected with a fourth input and output end of the Ethernet switch module.
[0019] In a possible implementation, the left area controller comprises a second physical layer master chip, a first microcontroller chip and a first power amplifier chip.
[0020] An input and output end of the second physical layer master chip is connected with a second input and output end of the Ethernet switch module, and an output end of the second physical layer master chip is connected with an input end of the first microcontroller chip.
[0021] An output end of the first microcontroller chip is connected with an input end of the first power amplifier chip.
[0022] The second physical layer master chip is configured to transmit the audio data to the first microcontroller chip, the first microcontroller chip is configured to transmit the audio data to the first power amplifier chip after receiving the audio data, and the first power amplifier chip is configured to amplify the audio data after receiving the audio data.
[0023] In a possible implementation, the right area controller comprises a third physical layer master chip, a second microcontroller chip and a second power amplifier chip.
[0024] The input and output end of the third physical layer master chip is connected with the third input and output end of the Ethernet switch module, and the output end of the third physical layer master chip is connected with the input end of the second microcontroller chip.
[0025] The output end of the second microcontroller chip is connected with the input end of the second power amplifier chip.
[0026] The third physical layer master chip is configured to transmit the audio data to the second microcontroller chip, the second microcontroller chip is configured to transmit the audio data to the second power amplifier chip after receiving the audio data, and the second power amplifier chip is configured to amplify the audio data after receiving the audio data.
[0027] In a possible implementation, the right area controller comprises a fourth physical layer master chip, a third microcontroller chip, a third power amplifier chip and a fourth power amplifier chip.
[0028] The input and output end of the fourth physical layer master chip is connected with the fourth input and output end of the Ethernet switch module, and the output end of the fourth physical layer master chip is connected with the input end of the third microcontroller chip.
[0029] The output end of the third microcontroller chip is connected with the input end of the third power amplifier chip, and the output end of the third microcontroller chip is connected with the input end of the fourth power amplifier chip.
[0030] The fourth physical layer master chip is configured to transmit the audio data to the third microcontroller chip, the third microcontroller chip is configured to transmit the audio data to the third power amplifier chip and the fourth power amplifier chip after receiving the audio data, and the third power amplifier chip and the fourth power amplifier chip are configured to amplify the audio data after receiving the audio data.
[0031] In a possible implementation, the area controller further comprises a second CAN bus.
[0032] The input end of the second CAN bus is connected with the output end of the vehicle-mounted central control module; and the second CAN bus is used for receiving the control instruction sent by the vehicle-mounted central control module.
[0033] In a possible implementation, the vehicle-mounted audio system further comprises an audio output module.
[0034] The first input end of the audio output module is connected with the first output end of the area control module, the second input end of the audio output module is connected with the second output end of the area control module, and the third input end of the audio output module is connected with the third output end of the area control module; and the audio output module is used for outputting the amplified audio data.
[0035] In a possible implementation, the audio output module comprises a first loudspeaker, a second loudspeaker and a third loudspeaker.
[0036] The input end of the first loudspeaker is connected with the first output end of the area control module, the input end of the second loudspeaker is connected with the second output end of the area control module, and the input end of the third loudspeaker is connected with the third output end of the area control module.
[0037] By means of the above technical solution, the vehicle-mounted audio system provided by the utility model comprises a vehicle-mounted central control module, an Ethernet exchange module and an area control module; the input and output end of the vehicle-mounted central control module is connected with the first input and output end of the Ethernet exchange module; the vehicle-mounted central control module is used for outputting audio data; the Ethernet exchange module is used for transmitting audio data; the second input and output end of the Ethernet exchange module is connected with the first input and output end of the area control module, the third input and output end of the Ethernet exchange module is connected with the second input and output end of the area control module, and the fourth input and output end of the Ethernet exchange module is connected with the third input and output end of the area control module; and the area control module is used for amplifying and processing audio data. The processing of audio data can be realized by means of the area control module, without the need of integrating additional hardware components, so that the development cost of the power amplifier is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS
[0038] The above and other features, advantages, and aspects of the present disclosure will become more apparent by describing in detail the following specific embodiments with reference to the attached drawings. Throughout the drawings, the same or similar reference numerals refer to the same or similar elements. It should be understood that the drawings are schematic, and the original and elements are not necessarily drawn according to the scale.
[0039] Figure 1 It is a first structural schematic view of the vehicle-mounted audio system provided by the utility model;
[0040] Figure 2A second structure schematic view of a vehicle-mounted audio system is provided in the utility model;
[0041] Figure 3 A third structure schematic view of a vehicle-mounted audio system is provided in the utility model;
[0042] Figure 4 A fourth structure schematic view of a vehicle-mounted audio system is provided in the utility model;
[0043] Figure 5 A fifth structure schematic view of a vehicle-mounted audio system is provided in the utility model;
[0044] Figure 6 A sixth structure schematic view of a vehicle-mounted audio system is provided in the utility model;
[0045] Figure 7 A seventh structure schematic view of a vehicle-mounted audio system is provided in the utility model;
[0046] Figure 8 An eighth structure schematic view of a vehicle-mounted audio system is provided in the utility model;
[0047] Figure 9 A ninth structure schematic view of a vehicle-mounted audio system is provided in the utility model;
[0048] Figure 10 A tenth structure schematic view of a vehicle-mounted audio system is provided in the utility model;
[0049] Figure 11 An eleventh structure schematic view of a vehicle-mounted audio system is provided in the utility model. DETAILED DESCRIPTION
[0050] The embodiments of the utility model will be described below in conjunction with the drawings in the embodiments of the utility model. The terms used in the embodiment part of the utility model are only used for explaining the specific embodiments of the utility model, and are not intended to limit the utility model.
[0051] The embodiments of the utility model will be described below in conjunction with the drawings in the embodiments of the utility model. The embodiments of the utility model provide technical solutions for similar technical problems, which are also applicable to similar technical problems.
[0052] The terms "first", "second", and the like in the description and claims of the utility model and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or chronological sequence. It should be understood that the terms thus used can be interchanged under appropriate circumstances, which is only a distinguishing way adopted in the description of the embodiments of the utility model for the objects of the same attribute in the description. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, so that the process, method, system, product or equipment containing a series of units does not have to be limited to those units, but can include other units not clearly listed or inherent to these processes, methods, products or equipment.
[0053] With the continuous development of automobile intelligence, the demand for car audio systems also shows a growing trend, especially in high-end vehicles, sound quality and audio experience has become one of the important considerations for consumers when choosing a car. In order to meet this demand, the car audio system often needs to be equipped with high-quality power amplifiers to improve the output capability of the audio signal and ensure the clarity of the sound effect.
[0054] At present, the power amplifier in the car audio system is generally designed as an independent electronic control unit, and the audio data is transmitted from the car host to the power amplifier through the car audio bus. In order to ensure smooth connection between the power amplifier and the car audio system, these electronic control units usually integrate multiple hardware modules, such as micro control units, serial communication protocol transceivers, car audio bus chips, power management chips, etc. However, using this independent design scheme means that each power amplifier needs to carry multiple hardware components, resulting in an increase in development costs.
[0055] In order to solve the above problems, the utility model embodiment provides a kind of car audio system. The car audio system of the utility model embodiment is introduced in detail below in conjunction with the drawings.
[0056] Refer to Figure 1 , Figure 1 The first structure schematic drawing of a kind of car audio system provided by the utility model embodiment, the car audio system includes: car central control module 11, Ethernet switch module 12 and regional control module 13.
[0057] The input and output end of car central control module 11 is connected with the first input and output end of Ethernet switch module 12.
[0058] Among them, car central control module 11 is used to output audio data;Ethernet switch module 12 is used to transmit audio data.
[0059] Optionally, Ethernet switch module 12 includes but is not limited to: ETH Switch chip.
[0060] Further, the input and output end of the vehicle central control module 11 is connected with the first input and output end of the Ethernet exchange module 12 through a twisted pair (for example, a shielded twisted pair).
[0061] Further, in combination with Figure 1 the content shown, referring to Figure 2 , the vehicle central control module 11 comprises: a system on chip 21 and a first physical layer master chip 22.
[0062] The output end of the system on chip 21 is connected with the input end of the first physical layer master chip 22, and the input and output end of the first physical layer master chip 22 is connected with the first input and output end of the Ethernet exchange module 12.
[0063] Optionally, the output end of the system on chip 21 is connected with the input end of the first physical layer master chip 22 through a Time Division Multiplexing Port (TDM) port.
[0064] Optionally, the system on chip 21 comprises but is not limited to: a SOC, and the first physical layer master chip 22 comprises but is not limited to: a PHY Master chip.
[0065] It can be understood that the system on chip 21 transmits audio data to the first physical layer master chip 22 through the TDM port, and the first physical layer master chip 22 transmits the audio data to the Ethernet exchange module 12 through the twisted pair.
[0066] Further, in combination with Figure 2 the content shown, referring to Figure 3 , the vehicle central control module 11 further comprises: a first CAN bus 31.
[0067] The output end of the first CAN bus 31 is connected with the input end of the area control module 13.
[0068] Among them, the first CAN bus 31 is used to send control instructions to the area control module 13.
[0069] Among them, the control instructions comprise but are not limited to: controlling the output channel switch, controlling the power amplifier chip switch, and controlling the power amplifier chip mute.
[0070] It can be understood that the vehicle central control module 11 keeps real-time communication with the area control module 13 through the first CAN bus 31, can transmit control instructions to the area control module 13 in real time, and can also receive state signals, response signals and the like fed back by the area control module 13 in real time.
[0071] The second input / output end of the Ethernet switching module 12 is connected with the first input / output end of the area control module 13, the third input / output end of the Ethernet switching module 12 is connected with the second input / output end of the area control module 13, and the fourth input / output end of the Ethernet switching module 12 is connected with the third input / output end of the area control module 13.
[0072] The area control module 13 is configured to amplify the audio data, and the three input / output ends of the area control module correspond to different channels.
[0073] It can be understood that, after receiving the audio data sent by the Ethernet switching module 12, the area control module 13 amplifies the audio data and converts it into a signal suitable for output by the vehicle-mounted audio system.
[0074] It should be noted that, since the different input / output ends of the area control module 13 are responsible for audio data of different channels, the three input / output ends of the Ethernet switching module 12 are respectively connected with the three input / output ends of the area control module 13. Each connection is responsible for transmitting audio data to the corresponding input / output end of the area control module 13, so as to ensure that the audio data of different channels can be correctly distributed and processed.
[0075] Further, in combination with the content shown in Figure 3 , it can be seen from Figure 4 that the Ethernet switching module 12 comprises a first physical layer slave chip 41, a second physical layer slave chip 42 and a third physical layer slave chip 43.
[0076] The input / output end of the first physical layer slave chip 41 is connected with the first input / output end of the area control module 13, the input / output end of the second physical layer slave chip 42 is connected with the second input / output end of the area control module 13, and the input / output end of the third physical layer slave chip 43 is connected with the third input / output end of the area control module 13.
[0077] Further, in combination with the content shown in Figure 4 , it can be seen from Figure 5 that the area control module 13 comprises a left area controller 51, a right area controller 52 and a rear area controller 53.
[0078] The input / output end of the left area controller 51 is connected with the second input / output end of the Ethernet switching module 12.
[0079] The input / output end of the right area controller 52 is connected with the third input / output end of the Ethernet switching module 12.
[0080] The input / output end of the rear area controller 53 is connected with the fourth input / output end of the Ethernet switching module 12.
[0081] It is understandable that the output of the first CAN bus 31 is connected to the input of the left area controller 51, the output of the first CAN bus 31 is connected to the input of the right area controller 52, and the output of the first CAN bus 31 is connected to the input of the rear area controller 53.
[0082] Furthermore, combined with Figure 5 See the content shown. Figure 6 The left area controller 51 includes: a second physical layer main control chip 61, a first microcontroller chip 62, and a first power amplifier chip 63.
[0083] The input / output terminals of the second physical layer main control chip 61 are connected to the second input / output terminals of the Ethernet switching module 12, and the output terminal of the second physical layer main control chip 61 is connected to the input terminal of the first microcontroller chip 62.
[0084] The output terminal of the first microcontroller chip 62 is connected to the input terminal of the first power amplifier chip 63.
[0085] The second physical layer main control chip 61 is used to transmit audio data to the first microcontroller chip 62. The first microcontroller chip 62 is used to transmit the audio data to the first power amplifier chip 63 after receiving the audio data. The first power amplifier chip 63 is used to amplify the audio data after receiving it.
[0086] Understandably, the first power amplifier chip 63 in the left zone controller 51 is responsible for the audio signal processing and amplification of four channels: the left front door mid-high frequency, the left front door bass, the left front surround, and the center mid-high frequency, ensuring that the audio signal can accurately drive each speaker and produce high-quality sound effects.
[0087] Furthermore, combined with Figure 5 See the content shown. Figure 7 The right area controller 52 includes: a third physical layer main control chip 71, a second microcontroller chip 72, and a second power amplifier chip 73.
[0088] The input / output terminals of the third physical layer main control chip 71 are connected to the third input / output terminals of the Ethernet switching module 12, and the output terminal of the third physical layer main control chip 71 is connected to the input terminal of the second microcontroller chip 72.
[0089] The output of the second microcontroller chip 72 is connected to the input of the second power amplifier chip 73.
[0090] The third physical layer master chip 71 is configured to transmit the audio data to the second microcontroller chip 72, the second microcontroller chip 72 is configured to transmit the audio data to the second power amplifier chip 73 after receiving the audio data, and the second power amplifier chip 73 is configured to amplify the audio data after receiving the audio data.
[0091] It can be understood that the second power amplifier chip 73 in the right area controller 52 is responsible for audio signal processing and amplification of four channels of the vehicle, including the right front door midrange, the right front door bass, the right front surround, and the second-row center.
[0092] Further, in combination with Figure 7 the content shown, see Figure 8 The rear area controller 53 includes a fourth physical layer master chip 81, a third microcontroller chip 82, a third power amplifier chip 83, and a fourth power amplifier chip 84.
[0093] The input and output ends of the fourth physical layer master chip 81 are connected to the fourth input and output ends of the Ethernet switch module 12, and the output end of the fourth physical layer master chip 81 is connected to the input end of the third microcontroller chip 82.
[0094] The output end of the third microcontroller chip 82 is connected to the input end of the third power amplifier chip 83, and the output end of the third microcontroller chip 82 is connected to the input end of the fourth power amplifier chip 84.
[0095] The fourth physical layer master chip 81 is configured to transmit the audio data to the third microcontroller chip 82, the third microcontroller chip 82 is configured to transmit the audio data to the third power amplifier chip 83 and the fourth power amplifier chip 84 after receiving the audio data, and the third power amplifier chip 83 and the fourth power amplifier chip 84 are configured to amplify the audio data after receiving the audio data.
[0096] It can be understood that the third power amplifier chip 83 and the fourth power amplifier chip 84 in the rear area controller 53 are responsible for audio signal processing and amplification of eight channels of the vehicle, including the left rear door midrange, the left rear top surround, the left rear surround, the right rear door midrange, the right rear top surround, the right rear surround, the heavy bass 1, and the heavy bass 2.
[0097] Optionally, the second physical layer master chip 61, the third physical layer master chip 71, and the fourth physical layer master chip 81 are PHY Master chips.
[0098] It should be noted that the physical layer master chip and the microcontroller chip in the area controller are connected through the MDIO interface.
[0099] It should be emphasized that, in this embodiment of the invention, the power amplifier chip is integrated into the area controller. After the vehicle audio system is powered on, the vehicle central control module 11 transmits the configuration information of the power amplifier chip to the microcontroller chip within the area controller via the first CAN bus 31. Upon receiving this configuration information, the microcontroller chip communicates with the power amplifier chip using the IIC bus to complete the initialization configuration of the power amplifier chip.
[0100] Furthermore, this embodiment of the invention requires the output of 16 channels of audio data. To reduce costs, the power amplifier chip is integrated into the existing area controller, and the existing Ethernet interface of the area controller is used to transmit the audio data. The existing microcontroller unit of the area controller is used to control the power amplifier chip, such as chip register reading and writing, chip switching, etc.; the existing CAN bus of the area controller is used to enable the power amplifier chip to receive control commands from the vehicle central control module 11 and send status signals back to the vehicle central control module 11, so as to monitor and adjust the operating status of the audio system in real time.
[0101] Furthermore, combined with Figure 8 See the content shown. Figure 9 The area controller also includes a second CAN bus 91.
[0102] The input terminal of the second CAN bus 91 is connected to the output terminal of the vehicle central control module 11.
[0103] The second CAN bus 91 is used to receive control commands sent by the vehicle central control module 11.
[0104] Optionally, the second CAN bus 91 is also used to send status signals and response signals of the power amplifier chip in the area controller to the vehicle central control module 11.
[0105] Furthermore, combined with Figure 9 See the content shown. Figure 10 The vehicle audio system also includes an audio output module 101.
[0106] The first input terminal of the audio output module 101 is connected to the first output terminal of the area control module 13, the second input terminal of the audio output module 101 is connected to the second output terminal of the area control module 13, and the third input terminal of the audio output module 101 is connected to the third output terminal of the area control module 13.
[0107] The audio output module 101 is used to output amplified audio data.
[0108] Understandably, the area control module 13 transmits the amplified audio data to the audio output module 101 so that the audio output module 101 outputs the amplified audio data.
[0109] Further, in combination Figure 10 The content shown, see Figure 11 The audio output module 101 includes a first speaker 111, a second speaker 112 and a third speaker 113.
[0110] The input end of the first speaker 111 is connected with the first output end of the area control module 13, the input end of the second speaker 112 is connected with the second output end of the area control module 13, and the input end of the third speaker 113 is connected with the third output end of the area control module 13.
[0111] It needs to be emphasized that, therefore, no additional A2B twisted pair is needed for data transmission, reducing the cost. At the same time, the audio data transmitted by the Ethernet is convenient for real-time capture and positioning of the audio signal problem.
[0112] As described above, the area control module can realize the processing of the audio data, without integrating additional hardware components, thereby effectively reducing the development cost of the power amplifier.
[0113] The person skilled can further realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware, computer software or a combination of both, and in order to clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been described in general terms in the above description. Whether the functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. The person skilled can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.
[0114] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application should not be limited to the embodiments shown herein, but should be consistent with the widest scope of the principles and novel features disclosed herein.
Claims
1. A vehicle-mounted audio system, characterized in that, The in-vehicle audio system includes: an in-vehicle central control module, an Ethernet switching module, and a zone control module; The input / output terminals of the vehicle-mounted central control module are connected to the first input / output terminal of the Ethernet switching module; the vehicle-mounted central control module is used to output audio data; the Ethernet switching module is used to transmit the audio data. The second input / output terminal of the Ethernet switching module is connected to the first input / output terminal of the area control module, the third input / output terminal of the Ethernet switching module is connected to the second input / output terminal of the area control module, and the fourth input / output terminal of the Ethernet switching module is connected to the third input / output terminal of the area control module; the area control module is used to amplify the audio data; the three input / output terminals of the area control module correspond to different channels.
2. The vehicle audio system according to claim 1, characterized in that, The vehicle-mounted central control module includes: a system-on-a-chip and a first physical layer main control chip; The output terminal of the system-on-a-chip is connected to the input terminal of the first physical layer master control chip, and the input / output terminals of the first physical layer master control chip are connected to the first input / output terminals of the Ethernet switching module.
3. The vehicle audio system according to claim 2, characterized in that, The vehicle-mounted central control module also includes: a first CAN bus; The output terminal of the first CAN bus is connected to the input terminal of the area control module; the first CAN bus is used to send control commands to the area control module.
4. The vehicle audio system according to claim 1, characterized in that, The Ethernet switching module includes: a first physical layer slave chip, a second physical layer slave chip, and a third physical layer slave chip; The first physical layer is connected from the input / output terminal of the chip to the first input / output terminal of the area control module, the second physical layer is connected from the input / output terminal of the chip to the second input / output terminal of the area control module, and the third physical layer is connected from the input / output terminal of the chip to the third input / output terminal of the area control module.
5. The in-vehicle audio system according to claim 1, characterized in that, The area control module includes: a left area controller, a right area controller, and a rear area controller; The input / output terminals of the left area controller are connected to the second input / output terminal of the Ethernet switching module; The input / output terminals of the right area controller are connected to the third input / output terminal of the Ethernet switching module; The input / output terminals of the rear area controller are connected to the fourth input / output terminal of the Ethernet switching module.
6. The vehicle audio system according to claim 5, characterized in that, The left region controller includes: a second physical layer main control chip, a first microcontroller chip, and a first power amplifier chip; The input / output terminals of the second physical layer master control chip are connected to the second input / output terminals of the Ethernet switching module, and the output terminal of the second physical layer master control chip is connected to the input terminal of the first microcontroller chip. The output terminal of the first microcontroller chip is connected to the input terminal of the first power amplifier chip; The second physical layer main control chip is used to transmit the audio data to the first microcontroller chip. After receiving the audio data, the first microcontroller chip transmits the audio data to the first power amplifier chip. After receiving the audio data, the first power amplifier chip amplifies the audio data.
7. The in-vehicle audio system according to claim 5, characterized in that, The right region controller includes: a third physical layer main control chip, a second microcontroller chip, and a second power amplifier chip; The input / output terminals of the third physical layer master control chip are connected to the third input / output terminals of the Ethernet switching module, and the output terminal of the third physical layer master control chip is connected to the input terminal of the second microcontroller chip. The output terminal of the second microcontroller chip is connected to the input terminal of the second power amplifier chip; The third physical layer main control chip is used to transmit the audio data to the second microcontroller chip. After receiving the audio data, the second microcontroller chip transmits the audio data to the second power amplifier chip. After receiving the audio data, the second power amplifier chip amplifies the audio data.
8. The vehicle audio system according to claim 5, characterized in that, The right area controller includes: a fourth physical layer main control chip, a third microcontroller chip, a third power amplifier chip, and a fourth power amplifier chip; The input / output terminals of the fourth physical layer master control chip are connected to the fourth input / output terminals of the Ethernet switching module, and the output terminal of the fourth physical layer master control chip is connected to the input terminal of the third microcontroller chip. The output terminal of the third microcontroller chip is connected to the input terminal of the third power amplifier chip, and the output terminal of the third microcontroller chip is connected to the input terminal of the fourth power amplifier chip. The fourth physical layer main control chip is used to transmit the audio data to the third microcontroller chip. The third microcontroller chip, after receiving the audio data, transmits the audio data to the third power amplifier chip and the fourth power amplifier chip. The third power amplifier chip and the fourth power amplifier chip, after receiving the audio data, amplify the audio data.
9. The vehicle audio system according to any one of claims 6 to 8, characterized in that, The area controller also includes: a second CAN bus; The input terminal of the second CAN bus is connected to the output terminal of the vehicle central control module; the second CAN bus is used to receive control commands sent by the vehicle central control module.
10. The vehicle audio system according to claim 1, characterized in that, The in-vehicle audio system also includes: an audio output module; The first input terminal of the audio output module is connected to the first output terminal of the area control module, the second input terminal of the audio output module is connected to the second output terminal of the area control module, and the third input terminal of the audio output module is connected to the third output terminal of the area control module; the audio output module is used to output amplified audio data.
11. The vehicle audio system according to claim 10, characterized in that, The audio output module includes: a first speaker, a second speaker, and a third speaker; The input terminal of the first speaker is connected to the first output terminal of the area control module, the input terminal of the second speaker is connected to the second output terminal of the area control module, and the input terminal of the third speaker is connected to the third output terminal of the area control module.