Vehicle-mounted audio hardware system and vehicle

Abstract

The utility model discloses a vehicle-mounted audio hardware system and a vehicle, and the system comprises a central processor, a wireless network transceiver, a radio, an audio bus transceiver, an audio power amplifier, and an audio analog-to-digital converter. The wireless network transceiver, the radio, the audio bus transceiver, the audio power amplifier and the audio analog-to-digital converter are in data connection with the central processor through an audio bus. According to the utility model, the system design can be simplified, the software and hardware development time is shortened, the BOM (Bill of Material) cost of a hardware system is reduced, and the purpose of reducing the cost of the whole vehicle is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted central control systems, in particular to a vehicle-mounted audio hardware system and a vehicle. Background Art

[0002] At present, the hardware design of the in-vehicle audio system is based on an independent DSP chip, which realizes functions such as audio data routing, volume adjustment, sound balance, and sound effect algorithm. Figure 1 The entire hardware system includes the following parts: digital processing chip (DSP), central processing unit 1 (SOC), audio bus transceiver 4 (such as: A2B), wireless network transceiver 2 (BT / WIFI / 4G / 5G), radio 3, audio power amplifier 5 and audio analog-to-digital converter 6. An independent DSP can only process audio data, and the control of the peripheral circuit needs to be realized by a single-chip microcomputer, and the design of the software and hardware system is complex. The hardware cost of an independent DSP is high and occupies a large PCB area. At the same time, DSP chips from different suppliers require a specific software development environment and experienced software developers, which increases the cost of purchasing software and the cost of personnel training. Utility Model Content

[0003] In view of the above technical problems, the utility model provides a vehicle-mounted audio hardware system and a vehicle, which simplifies the system design, shortens the software and hardware development time, reduces the BOM (bill of materials) cost of the hardware system, and achieves the purpose of reducing the cost of the entire vehicle.

[0004] In a first aspect of the utility model, a vehicle-mounted audio hardware system is provided, comprising: a central processing unit, a wireless network transceiver, a radio, an audio bus transceiver, an audio power amplifier and an audio analog-to-digital converter, wherein the wireless network transceiver, the radio, the audio bus transceiver, the audio power amplifier and the audio analog-to-digital converter are connected to the central processing unit via audio bus data.

[0005] In a possible implementation, the wireless network transceiver communicates audio data with the central processor via a PCM interface, a UART interface, a USB interface and / or an Ethernet interface.

[0006] In a possible implementation, the network cable transceiver includes a Bluetooth and WIFI transceiver and a cellular network transceiver; wherein the Bluetooth and WIFI transceiver communicates with the central processor via a PCM interface and / or a UART interface to implement the functions of hands-free phone and / or music playback; the cellular network transceiver communicates with the central processor via a USB interface and / or an Ethernet interface to implement the functions of sending and receiving network audio data.

[0007] In a possible implementation, the radio communicates audio data with the central processor via an I2S interface to implement a broadcasting function.

[0008] In a possible implementation, the audio bus transceiver communicates audio data with the central processor via a multi-channel TDM interface to extend the audio link.

[0009] In a possible implementation manner, the audio power amplifier performs audio communication with the central processor via a multi-channel TDM interface, and is used to drive a multi-channel speaker to play audio.

[0010] In a possible implementation manner, the audio power amplifier is configured with an analog interface chip, and a codec is added to achieve data connection with the central processing unit.

[0011] In a possible implementation, the audio analog-to-digital converter collects analog signals from a microphone, amplifies them, and converts them into I2S or TDM signals to communicate audio data with the central processor, thereby realizing the sound pickup function of a single or multi-channel microphone.

[0012] In a possible implementation, the system further includes a USB interface circuit, and the USB interface circuit is connected to the central processor via a data bus.

[0013] A second aspect of the present invention provides a vehicle, comprising: the vehicle is equipped with the vehicle audio hardware system as described in any one of the first aspects above.

[0014] Compared with traditional solutions, the audio hardware solution of the present invention integrates multiple components such as a central processing unit, a wireless network transceiver, a radio, an audio bus transceiver, an audio power amplifier, and an audio analog-to-digital converter. All components are controlled by the central processing unit to achieve unified processing of audio data and control, greatly simplifying the system design and development process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a schematic diagram of the architecture of an existing in-vehicle audio hardware system.

[0016] Figure 2 It is a schematic diagram of the architecture of a vehicle audio hardware system in an embodiment of the utility model.

[0017] Figure 3 It is a system schematic diagram of the DSP peripheral circuit in the embodiment of the utility model.

[0018] Figure 4 This is a topology diagram of the existing in-vehicle audio hardware system.

[0019] Figure 5 The topological diagram of a vehicle audio hardware system in an embodiment of the utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0021] It should be understood that the terms "first", "second", and "third" etc. in the claims, specifications, and drawings of the present disclosure are used to distinguish different objects rather than to describe a specific order. The terms "include" and "comprise" used in the specification and claims of the present disclosure indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their collections. It should also be understood that the terms used in this disclosure specification are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0022] See also Figure 2 As shown, the utility model provides a vehicle-mounted audio hardware system, including a central processing unit 1, a wireless network transceiver 2, a radio 3, an audio bus transceiver 4, an audio power amplifier 5 and an audio analog-to-digital converter 6, wherein the wireless network transceiver 2, the radio 3, the audio bus transceiver 4, the audio power amplifier 5 and the audio analog-to-digital converter 6 are connected to the central processing unit 1 via audio bus data.

[0023] Specifically, the in-vehicle audio hardware system described in this embodiment is characterized in that each component (wireless network transceiver 2, radio 3, audio bus transceiver 4, audio power amplifier 5 and audio analog-to-digital converter 6) is connected to the central processor 1 (SOC) through audio bus data. This architecture enables each audio component to directly exchange data and communicate with the central processor 1, realizing the integration and unified control of the audio system.

[0024] Specifically, the central processor 1 acts as the core control unit of the system, responsible for managing and coordinating the work of various audio components. The wireless network transceiver 2, the radio 3, the audio bus transceiver 4, the audio power amplifier 5, and the audio analog-to-digital converter 6 are connected to the central processor 1 through the audio bus, so that the transmission of audio data and the sending of control instructions can be realized. This integrated architecture can simplify system design and wiring, and improve the overall performance and reliability of the system. At the same time, this audio system architecture has the advantages of strong integration, flexible control, and simple wiring, and is suitable for application scenarios such as in-vehicle audio systems.

[0025] Further, as a specific embodiment of the present application, the wireless network transceiver 2 communicates audio data with the central processor 1 via a PCM interface, a UART interface, a USB interface and / or an Ethernet interface.

[0026] Specifically, the wireless network transceiver 2 communicates audio data with the central processor 1 through multiple interfaces, including a PCM interface, a UART interface, a USB interface and / or an Ethernet interface. This multi-interface design can provide flexibility and compatibility, so that the wireless network transceiver 2 can communicate with different types of central processors 1 to adapt to different application scenarios and requirements.

[0027] Specifically, the PCM interface is used for the transmission of high-quality audio data, such as music playback or high-definition voice calls; the UART interface is used for basic control instructions and data transmission, and is suitable for simple communication needs; the USB interface is used for high-speed data transmission with the central processor 1, supports larger amounts of data exchange, and is suitable for scenarios that require fast transmission of large amounts of audio data; the Ethernet interface is used for network communication with the central processor 1, such as transmitting audio data over the network or remotely controlling audio devices.

[0028] This multi-interface design enables the wireless network transceiver 2 to flexibly connect and communicate with different types of central processors 1 and other external devices, thereby realizing more diverse audio applications and functions.

[0029] Furthermore, as a specific embodiment of the utility model, the network cable transceiver includes a Bluetooth and WIFI transceiver and a cellular network transceiver; wherein the Bluetooth and WIFI transceiver communicates with the central processor 1 through a PCM interface and / or a UART interface to realize the functions of hands-free phone and / or music playback; the cellular network transceiver communicates with the central processor 1 through a USB interface and / or an Ethernet interface to realize the functions of sending and receiving network audio data.

[0030] In this specific embodiment, the wireless network transceiver 2 includes a Bluetooth and WIFI transceiver and a cellular network transceiver, which communicate with the central processor 1 through different interfaces to achieve different functions.

[0031] The Bluetooth and WIFI transceivers communicate with the CPU 1 via the PCM interface and / or the UART interface to implement the functions of hands-free phone and / or music playback. Bluetooth is usually used for hands-free phone functions, while WIFI is usually used for music playback and other network-related functions. Through these interfaces, audio data can be transmitted from the Bluetooth and WIFI transceivers to the CPU 1, and then processed or transmitted to other devices.

[0032] The cellular network transceiver communicates with the central processor 1 via a USB interface and / or an Ethernet interface. It is used to implement the functions of sending and receiving network audio data. Cellular networks are generally used for data transmission, such as real-time audio streaming or other network audio data. Through the USB interface or the Ethernet interface, the central processor 1 can communicate with the cellular network transceiver to send and receive network audio data.

[0033] This specific embodiment realizes multiple audio functions, including hands-free phone, music playing and sending and receiving network audio data, through different wireless network transceivers 2 and interfaces. This design makes the car audio system have more functions and flexibility, meeting the needs of different users.

[0034] Furthermore, as a specific embodiment of the present application, the radio 3 communicates audio data with the central processor 1 via an I2S interface to implement a broadcasting function.

[0035] Specifically, the radio 3 communicates audio data with the central processor 1 via the I2S interface to implement the function of listening to the radio. I2S (Inter-IC Sound) is an interface standard for communication between digital audio devices, and is usually used to connect audio codecs, digital signal processors and other audio devices.

[0036] Specifically, the radio 3, as a device for receiving broadcast signals, transmits the received audio signals to the central processor 1 through the I2S interface. The central processor 1 can process the audio signals, such as decoding, mixing, and enhancement, and then send the processed audio signals to the audio power amplifier 5 for amplification, and finally drive the speaker to play the sound. Through this design, the in-vehicle audio system can realize the broadcasting function, the user can listen to the radio program, and the audio signal can be processed by the central processor 1 to improve the audio quality or add special effects. At the same time, using the I2S interface for audio data communication can ensure high-quality transmission and low latency of the audio signal, providing a better audio experience.

[0037] Furthermore, as a specific embodiment of the present utility model, the audio bus transceiver 4 communicates audio data with the central processor 1 through a multi-channel TDM interface to extend the audio link.

[0038] In this specific embodiment, the audio bus transceiver 4 communicates audio data with the central processor 1 through a multi-channel TDM (Time-Division Multiplexing) interface for extending the audio link.

[0039] The TDM interface allows multiple audio signals to be transmitted on a single physical channel, with each signal occupying a different time slot. Therefore, the audio bus transceiver 4 can be connected to the central processor 1 via the TDM interface and transmit audio data of multiple channels. These channels can be from different audio devices, such as digital microphones, independent power amplifiers, RNC sensors, etc.

[0040] Through this design, the vehicle audio system can achieve expansion and management of multiple audio devices. The central processor 1 can communicate with the audio bus transceiver 4 through the TDM interface to control and manage the audio data transmission of each audio device, thereby achieving flexible expansion and unified control of the audio system. In general, by using the TDM interface for audio data communication, the expansion and integration of the audio system can be achieved, providing users with a richer audio experience.

[0041] Furthermore, as a specific embodiment of the present invention, the audio power amplifier 5 performs audio communication with the central processor 1 via a multi-channel TDM interface, and is used to drive a multi-channel speaker to play audio.

[0042] In this specific embodiment, the audio power amplifier 5 can be connected to the central processor 1 through a TDM interface and receive audio data from the central processor 1. The audio data can be audio signals from different channels, such as a left channel, a right channel, etc. The audio power amplifier 5 amplifies the received audio data and plays the sound through the connected multi-channel speaker.

[0043] Through this design, the in-vehicle audio system can play multi-channel audio and provide users with a richer and more three-dimensional audio experience. The central processor 1 communicates with the audio power amplifier 5 through the TDM interface to control and manage the audio data transmission of each channel, thereby achieving unified control and management of the audio system. By using the TDM interface for audio communication, multi-channel audio can be played, the function and performance of the audio system can be improved, and a better audio experience can be provided to users.

[0044] Furthermore, as a specific embodiment of the present invention, the audio power amplifier 5 is configured with an analog interface chip, and a codec is added to achieve data connection with the central processor 1.

[0045] In this specific embodiment, the audio power amplifier 5 is configured with an analog interface chip, and a data connection is achieved with the central processor 1 by adding a codec. Specifically, the analog interface chip acts as a bridge between the audio power amplifier 5 and the central processor 1. This interface chip includes functions such as a codec, which is used to convert digital audio signals into analog signals, or convert analog signals into digital audio signals. With such a configuration, the audio power amplifier 5 can receive digital audio signals from the central processor 1, and after being processed by the analog interface chip, output analog audio signals to the speaker for amplification and playback.

[0046] The central processor 1 is connected to the audio power amplifier 5 through a data connection with the codec, and can send audio data to the audio power amplifier 5, control audio playback, or receive status information sent by the audio power amplifier 5. This configuration enables the audio system to have the ability of digital audio processing and analog audio amplification, and at the same time, it interacts with the central processor 1 to realize the integration and coordinated control of the audio system.

[0047] Furthermore, as a specific embodiment of the utility model, the audio analog-to-digital converter collects analog signals through the microphone, amplifies them and converts them into I2S or TDM signals to communicate audio data with the central processor 1, so as to realize the sound pickup function of single-channel or multi-channel microphones.

[0048] In this specific embodiment, the audio analog-to-digital converter is responsible for collecting analog signals through the microphone, and converting them into I2S or TDM signals after amplification, and communicating audio data with the central processor 1, so as to realize the sound pickup function of a single-channel or multi-channel microphone. Specifically, the audio analog-to-digital converter is connected to the microphone and is responsible for converting the analog audio signals collected by the microphone into digital audio signals. Subsequently, these digital audio signals can be transmitted to the central processor 1 through the I2S or TDM interface. The central processor 1 can receive and process the audio data from the microphone through these interfaces, so as to realize the sound pickup function of a single-channel or multi-channel microphone.

[0049] Through this design, the in-vehicle audio system can collect and process ambient sounds, providing users with a richer audio experience. The central processor 1 receives the audio data collected by the microphone through an interface connected to the audio analog-to-digital converter, and can analyze, process or record it, thereby realizing the sound pickup function. This configuration enables the audio system to have the ability to collect and process ambient sounds, providing users with a more comprehensive and high-quality audio experience.

[0050] Furthermore, as a specific embodiment of the present utility model, the system further includes a USB interface circuit 7, and the USB interface circuit 7 is connected to the central processor 1 via a data bus.

[0051] In this specific embodiment, the system also includes a USB interface circuit 7, which is connected to the central processor 1 through a data bus. The USB interface circuit 7 is an interface for connecting external USB devices, such as a USB flash drive, an external storage device, a mobile hard disk, a mobile phone, etc. Through the USB interface, these external devices can exchange data and communicate with the central processor 1. Specifically, the USB interface circuit 7 is connected to the central processor 1 through a data bus, allowing external USB devices to transfer data to the central processor 1. The central processor 1 can exchange data with external devices through the USB interface, such as reading audio files stored in a USB flash drive, or transferring audio data to a mobile phone for playback, etc.

[0052] Through this design, the system has the ability to exchange and communicate data with external USB devices, providing users with more audio data sources and storage options, and enhancing the flexibility and scalability of the system.

[0053] Compared with the traditional solution, the utility model not only eliminates the independent DSP chip, but also eliminates the peripheral circuit of DSP. Figure 3 The deleted systems include: DSP, crystal oscillator, memory, power supply, level converter, analog switch, etc. Before the deletion, the system occupied a large PCB space and had a high BOM cost. After the deletion, it has significant economic benefits.

[0054] Reference Figure 4 , the traditional solution requires a single-chip microcomputer to control peripherals such as DSP, and the single-chip microcomputer also needs to communicate with the SOC in real time to ensure that the control timing meets the requirements of audio communication, which increases the communication link delay and software development workload. Figure 5 , the audio data and control of the utility model are all completed by SOC. The processing of audio data and control by SOC can improve the real-time and security of communication, because SOC plays the role of a more centralized and powerful control center between the microcontroller and peripherals. In addition, since all controls are completed by SOC, the functional safety certification of the system is relatively simple, because the control logic of the entire system is clearer and more unified.

[0055] An embodiment of the present utility model further provides a vehicle, wherein the vehicle is equipped with the vehicle audio hardware system as described in any of the above embodiments.

[0056] The in-vehicle audio hardware system can provide a richer and higher-quality audio experience for the vehicle, and enhance the comfort and enjoyment of the driver and passengers. Such an in-vehicle audio system may include components such as a central processor 1, a wireless network transceiver 2, a radio 3, an audio bus transceiver 4, an audio power amplifier 5, an audio analog-to-digital converter, and a USB interface circuit 7.

[0057] By integrating such an in-vehicle audio hardware system into the vehicle, the driver and passengers can enjoy high-quality music playback, hands-free phone function, broadcast function, etc. At the same time, through integration with the in-vehicle system, the interaction between the in-vehicle audio system and other vehicle functions can be better realized, such as connection and control with the in-vehicle infotainment system, navigation system, etc., providing a more comprehensive user experience.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle audio hardware system, comprising a central processing unit (1), a wireless network transceiver (2), a radio (3), an audio bus transceiver (4), an audio power amplifier (5) and an audio analog-to-digital converter (6), characterized in that: The wireless network transceiver (2), the radio (3), the audio bus transceiver (4), the audio power amplifier (5) and the audio analog-to-digital converter (6) are connected to the central processor (1) via audio bus data.

2. The vehicle audio hardware system according to claim 1, characterized in that: The wireless network transceiver (2) communicates audio data with the central processor (1) via a PCM interface, a UART interface, a USB interface and / or an Ethernet interface.

3. The vehicle audio hardware system according to claim 2, characterized in that: The wireless network transceiver (2) comprises a Bluetooth and WIFI transceiver and a cellular network transceiver; wherein the Bluetooth and WIFI transceiver communicates with the central processor (1) via a PCM interface and / or a UART interface, and is used to implement the functions of hands-free phone and / or music playback; the cellular network transceiver communicates with the central processor (1) via a USB interface and / or an Ethernet interface, and is used to implement the functions of sending and receiving network audio data.

4. The vehicle audio hardware system according to claim 1, characterized in that: The radio (3) communicates audio data with the central processor (1) via an I2S interface, so as to realize a function of listening to broadcasts.

5. The vehicle audio hardware system according to claim 1, characterized in that: The audio bus transceiver (4) communicates audio data with the central processor (1) via a multi-channel TDM interface, and is used to extend the audio link.

6. The vehicle audio hardware system according to claim 1, characterized in that: The audio power amplifier (5) performs audio communication with the central processor (1) via a multi-channel TDM interface, and is used to drive a multi-channel speaker to play audio.

7. The vehicle audio hardware system according to claim 6, characterized in that: The audio power amplifier (5) is equipped with an analog interface chip, and is data-connected with the central processor (1) by adding a codec.

8. The vehicle audio hardware system according to claim 1, characterized in that: The audio analog-to-digital converter collects analog signals from the microphone, amplifies them, and converts them into I2S or TDM signals to communicate audio data with the central processor (1), thereby realizing the sound pickup function of a single-channel or multi-channel microphone.

9. The vehicle audio hardware system according to claim 1, characterized in that: The system also includes a USB interface circuit (7), and the USB interface circuit (7) is connected to the central processor (1) via a data bus.

10. A vehicle, characterized in that: The vehicle is equipped with the in-vehicle audio hardware system as described in any one of claims 1-9.

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