A vehicle audio system based on A2B external power amplifier and vehicle

Abstract

The utility model discloses a vehicle audio system and vehicle based on A2B external power amplifier belongs to vehicle audio equipment field. System includes central control display screen, host computer, instrument controller, audio processor, MCU, A2B controller, A2B external power amplifier, loudspeaker, wherein, central control display screen with host computer is connected, instrument controller is connected with host computer, MCU, audio processor, A2B controller respectively, A2B controller is connected with A2B external power amplifier through A2B bus, A2B external power amplifier with loudspeaker is connected, central control display screen includes the multiple function switch of pre -setting, including the welcome function welcome speech switch, analog sound wave switch. The utility model has realized the diversification function development of vehicle audio equipment.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle audio equipment. Specifically, this utility model relates to a vehicle audio system and a vehicle based on an A2B external power amplifier. Background Technology

[0002] With the continuous development of vehicle technology and the expanding needs of users, the demand for multi-functional vehicle audio equipment is also increasing.

[0003] Existing vehicle audio devices have limited functionality and cannot be integrated with other vehicle equipment. For example, publication number CN202796057U, publication date 2013-03-13, and patent title "In-vehicle Network Audio Device, In-vehicle Network Audio System, and Automobile" discloses an in-vehicle network audio device, an in-vehicle network audio system, and an automobile, designed to solve the audio power amplification problem of in-vehicle audio-visual entertainment systems. This in-vehicle network audio system includes: a speaker; and a power amplifier for receiving control commands from the in-vehicle audio-visual entertainment system on the vehicle's CAN bus to control the playback of audio or video files, connected between any node of the CAN bus and the speaker.

[0004] To address the problems of the prior art, this application proposes a vehicle audio system and vehicle based on an A2B external power amplifier. Utility Model Content

[0005] This utility model aims to overcome the shortcomings of the prior art and proposes a vehicle audio system and vehicle based on an A2B external power amplifier, so as to achieve the following objectives: to realize the diversified functional expansion of vehicle audio equipment.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a vehicle audio system based on an A2B external power amplifier, the system comprising a central control display screen, a host, an instrument controller, an audio processor, an MCU, an A2B controller, an A2B external power amplifier, and a speaker, wherein the central control display screen is connected to the host; the instrument controller is connected to the host, the MCU, the audio processor, and the A2B controller respectively; the A2B controller is connected to the A2B external power amplifier via an A2B bus; the A2B external power amplifier is connected to the speaker; the central control display screen includes multiple preset function switches, including a welcome message switch and a simulated engine sound switch; the MCU is used to acquire vehicle speed signals, accelerator pedal depth signals, gear signals, engine speed signals, and external welcome trigger signals and send them to the instrument controller.

[0007] Preferably, the system further includes a driver identification module, which is connected to the host computer.

[0008] Preferably, the driver identification module includes a DMS face recognition camera, which is connected to the host computer.

[0009] Preferably, the speakers include in-vehicle speakers and camping speakers, both of which are connected to the A2B external amplifier.

[0010] Preferably, the audio processor uses an AK7738 chip.

[0011] Preferably, the A2B controller uses the AD2428W chip.

[0012] This application also proposes a vehicle that includes the aforementioned vehicle audio system based on an A2B external amplifier.

[0013] The technical effects of this utility model are as follows:

[0014] This invention uses a low-latency, high-stability A2B bus for audio signal transmission to ensure audio quality and timely audio output.

[0015] This invention integrates multiple function switches, such as sound effect mode switching, external welcome messages, and simulated engine sounds, through the central control display screen. It also combines vehicle data acquired by the MCU to generate corresponding audio signals, thus diversifying the audio device's functionality and meeting the needs of different scenarios. Furthermore, this invention is linked with the driver identification module to provide vehicle alarms in case of abnormal driver identification. Attached Figure Description

[0016] Figure 1 This is a structural block diagram of a vehicle audio system based on an A2B external power amplifier, according to an embodiment of the present invention. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. The purpose is to help those skilled in the art to have a more complete, accurate, and in-depth understanding of the inventive concept and technical solution of this utility model, and to facilitate its implementation. It should be noted that the terms "first," "second," etc., used in this application are only for the convenience of describing the technical solution and distinguishing different components, and are not intended to limit this application. To make the technical solution of this utility model clearer, it will be explained and illustrated through the following embodiments.

[0018] This embodiment provides a vehicle audio system based on an A2B external power amplifier, such as... Figure 1As shown, the system includes a central control display screen, a host computer, an instrument controller, an audio processor, an MCU, an A2B controller, an A2B external amplifier, and a speaker. The central control display screen is connected to the host computer; the instrument controller is connected to the host computer, the MCU, the audio processor, and the A2B controller; the A2B controller is connected to the A2B external amplifier via an A2B bus; and the A2B external amplifier is connected to the speaker.

[0019] Specifically, the central control display screen is used to acquire user commands and send them to the host computer. The host computer then generates control signals based on the user commands and sends them to the instrument controller. To facilitate user interaction, the central control display screen in this embodiment is pre-configured with multiple function switches. These function switches can be virtual switches integrated into the central control display screen or physical hardware switches. In addition to commonly used sound effect mode switching switches, this embodiment also includes a welcome message switch and a simulated sound wave switch, thus diversifying the audio device's functionality. Furthermore, the host computer in this embodiment has multiple reserved interfaces to facilitate system functional expansion.

[0020] The instrument controller generates audio and drive signals based on the host's control signals. Both audio and drive signals are sent to the audio processor, which processes the audio signals according to the drive signals. The processed audio signals are then sent to the A2B controller. Simultaneously, the instrument controller's drive signals are also sent to the A2B controller, driving it to transmit audio signals. The audio signals are ultimately sent to the A2B external amplifier, which amplifies the audio signal power before sending it to the speakers for playback. This embodiment's instrument controller also has multiple reserved interfaces for easy system expansion.

[0021] In this embodiment, the audio processor is used to process audio signals, including the selection of channels for the A2B external amplifier, and uses the AK7738 chip. The specific implementation can be flexibly selected according to needs. The A2B controller is used to control the transmission of vehicle audio signals and control signals, and uses the AD2428W chip. It supports establishing a connection with the A2B external amplifier via the A2B audio bus and I2C bus, and the specific implementation can also be flexibly selected according to needs.

[0022] In this embodiment, the MCU acquires vehicle speed signals, accelerator pedal depth signals, gear position signals, engine speed signals, and external welcome signal trigger signals, and sends them to the instrument cluster controller. Thus, when the simulated engine sound switch is activated, the instrument cluster controller generates a simulated engine sound audio signal that changes in sync with the vehicle speed, accelerator pedal depth, gear position, and engine speed signals, based on existing algorithms. Alternatively, when the welcome message switch is activated, the instrument cluster controller detects the external welcome trigger signal and generates a corresponding welcome audio signal. In specific implementations, the MCU can establish communication with the vehicle speed sensor, accelerator pedal travel sensor, vehicle transmission, engine speed sensor, and external welcome system controller via the CAN bus to obtain the necessary data.

[0023] In one embodiment of this application, the system further includes a driver identification module connected to the host computer. This module is used to issue an alarm through the system when identification fails, thereby expanding the functionality of this application. Specifically, the driver identification module includes a DMS face recognition camera connected to the host computer. The host computer acquires the face recognition result from the DMS face recognition camera. When face recognition fails, the host computer generates a corresponding control signal to the instrument controller, which then generates an alarm audio signal based on the host computer's control signal.

[0024] In this embodiment, the speakers include in-vehicle speakers and camping speakers, both of which are connected to the A2B external amplifier. In specific implementations, the speakers can be flexibly selected according to the actual situation to meet the needs of different functional scenarios. For example, when simulating sound waves, either the in-vehicle speakers or the camping speakers can be selected; when welcoming guests outside the vehicle, the camping speakers are selected.

[0025] This embodiment also proposes a vehicle that includes the above-described vehicle audio system based on an A2B external power amplifier.

[0026] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A vehicle audio system based on an A2B external power amplifier, characterized in that: The system includes a central control display screen, a host computer, an instrument cluster controller, an audio processor, an MCU, an A2B controller, an A2B external amplifier, and speakers. The central control display screen is connected to the host computer. The instrument cluster controller is connected to the host computer, the MCU, the audio processor, and the A2B controller. The A2B controller is connected to the A2B external amplifier via an A2B bus. The A2B external amplifier is connected to the speakers. The central control display screen includes multiple pre-set function switches, including a welcome message switch and a simulated engine sound switch. The MCU is used to acquire vehicle speed signals, accelerator pedal depth signals, gear signals, engine speed signals, and external welcome trigger signals, and sends them to the instrument cluster controller.

2. The vehicle audio system based on an A2B external power amplifier according to claim 1, characterized in that: The system also includes a driver identification module, which is connected to the host computer.

3. A vehicle audio system based on an A2B external power amplifier according to claim 2, characterized in that: The driver identification module includes a DMS face recognition camera, which is connected to the host computer.

4. A vehicle audio system based on an A2B external power amplifier according to claim 1, characterized in that: The speakers include in-vehicle speakers and camping speakers, both of which are connected to the A2B external amplifier.

5. A vehicle audio system based on an A2B external power amplifier according to any one of claims 1-4, characterized in that: The audio processor uses the AK7738 chip.

6. A vehicle audio system based on an A2B external power amplifier according to any one of claims 1-4, characterized in that: The A2B controller uses the AD2428W chip.

7. A vehicle, characterized in that: The vehicle includes a vehicle audio system based on an A2B external power amplifier as described in any one of claims 1-6.

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