Automobile acousto-optic touch integrated controller hardware device

Abstract

The invention discloses an automobile acousto-optic touch integrated controller hardware device, which relates to the technical field of an integrated hardware controller of an intelligent cabin system, and comprises an MCU (Microprogrammed Control Unit), the MCU is connected with the control signal input end of each functional module through a special control pin to realize accurate control instruction sending and state monitoring signal receiving of different functional modules, and the MCU is connected with the control signal input end of each functional module through a special control pin; the working time sequence and data interaction among the modules can be efficiently coordinated; the atmosphere lamp adjusting module is electrically connected with a corresponding port on the MCU, and the atmosphere lamp adjusting module supports three communication control modes of a CAN (Controller Area Network), an LIN (Local Interconnect Network) and a UART-CAN; core hardware circuits required by headrest sound drive, seat massage control and vehicle atmosphere light adjustment are highly integrated, visual, auditory and tactile control in the vehicle driving process is covered, and compared with a traditional distributed controller, a large amount of circuit board space occupation and connecting wiring harnesses are reduced, and the cost is reduced. And the hardware cost and the wiring complexity of the whole vehicle are reduced.

Description

Technical Field

[0001] This invention relates to the field of integrated hardware controller technology for intelligent cockpit systems, specifically to a hardware device for an integrated audio-visual-touch controller for automobiles. Background Technology

[0002] The smart cockpit industry is developing rapidly, and consumers' demands for smart cockpit functions are becoming increasingly diverse. Features such as headrest speaker drivers, 4D vibration massage control for seats, ambient lighting adjustment, and AVAS (Automatic Vehicle Automation System) are all becoming important components for enhancing the driving and riding experience. Currently, these functions often rely on distributed controllers. For example, the patent application filed by Zhejiang Jike Intelligent Technology Co., Ltd. and Zhejiang Geely Holding Group Co., Ltd., entitled "Music Seat and its Control Method, System, and Computer Storage Medium" (Publication No.: CN115804509A), involves setting different sound-generating and vibration components in the headrest, backrest, and base of the music seat. This means that the headrest speaker section requires an independent audio power amplifier and other drive modules, which not only occupies a large amount of interior space but also increases wiring complexity.

[0003] The same applies to vehicle ambient lighting adjustment. Many car ambient lights support stepless color changing, requiring the vehicle body to send LIN signals to control the ambient light's color and brightness to change in real time. For ambient lighting systems that need to support OTA or music rhythm and other complex functions, an ambient light controller is often required. This controller is also a separate module, which occupies vehicle space and increases weight.

[0004] In the field of AVAS modules, most vehicles currently use separate audio signal generation units, power amplification units, and speakers to build the system. For example, some new energy vehicles are equipped with a separate device to meet the low-speed driving safety warning requirements. This device generates specific warning sounds through an audio signal generation unit, which then drives the speaker to produce sound through a power amplification unit. This undoubtedly adds another independent controller module.

[0005] This distributed control architecture presents numerous problems. From a space and wiring perspective, multiple independent controllers not only occupy a significant amount of limited interior space, but the complex wiring also greatly increases the overall vehicle cost and the potential for malfunctions. Regarding data interaction timeliness, data transmission between controllers occurs through different interfaces, resulting in varying signal delays. For example, when a user activates music, the different communication delays between the headrest speaker driver module and the ambient lighting controller and the vehicle body can lead to poor synchronization of the music, significantly degrading the user experience. In terms of system management and maintenance, the distributed controllers complicate the entire system structure, greatly increasing the difficulty for after-sales service personnel to locate and troubleshoot faults. If a functional module malfunctions, it may be necessary to check multiple independent controllers on the same link one by one, consuming a significant amount of time and manpower, reducing the vehicle's reliability and maintainability. Therefore, an integrated automotive sound, light, and touch controller hardware device is needed to solve these problems. Summary of the Invention

[0006] The purpose of this invention is to provide a hardware device for an integrated audio-visual-touch controller for automobiles, so as to solve the problems existing in the prior art as mentioned in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: The automotive audio-visual-touch integrated controller hardware includes: The MCU is connected to the control signal input terminals of each functional module through dedicated control pins, enabling precise control command transmission and status monitoring signal reception for different functional modules, and efficiently coordinating the working timing and data interaction between modules. An ambient light adjustment module is electrically connected to a corresponding port on the MCU. The ambient light adjustment module supports three communication control methods: CAN, LIN, and UART-CAN, to meet the diverse control and interaction needs of ambient lights. An audio input and processing module is electrically connected to a corresponding port on the MCU. The audio input and processing module is designed with a dual-mode audio input circuit, including analog input of the vehicle body amplifier signal and A2B audio input. The power amplifier driver module is electrically connected to the port on the audio input and processing module and is used to drive the headrest speakers, AVAS and seat vibration massage oscillators. The power module has its input terminal connected to the vehicle body power supply and its output terminal connected to the power input terminals of each functional module, and is used to supply power to each functional module.

[0008] Preferably, the MCU is a Qixin Micro FC4150F2M. The power input pins of the MCU (11, 12, 15, 34, 51, 68, 91, 123) are all connected to 100nF and 1nF capacitors for filtering. The MCU's pins (16, 52, 124) are the MCU's internal 1.1V output pins, which are connected to external 100nF and 1nF capacitors for filtering. Pin 17 is the MCU's internal 2.5V output pin, which is connected to external 220nF, 10nF, and 1nF capacitors for filtering. The MCU's pins 19 and 20 are connected to an external quartz crystal to provide a clock for the MCU. The reset circuit consists of R86 and C88 and is directly connected to the MCU's pin 141.

[0009] Preferably, the ambient light adjustment module includes five CAN transceiver circuits and two LIN transceiver circuits. The two CAN transceiver circuits are connected to the CAN transceiver of the MCU through a common-mode inductor, and the other three CAN transceiver circuits are connected to the UART pins of the MCU. The two LIN transceiver circuits are connected to pins 55, 53 and 56, 57 of the MCU.

[0010] Preferably, the main control chip used in the audio input and processing module is an ADSP1802, which is used for receiving, processing and distributing audio data. The UART-RX and UART-TX pins 29 and 30 of the main control chip are connected to the MCU pins 58 and 60 through a level converter NXB0108-PW to achieve bidirectional data interaction. The four FLAG interfaces of the main control chip are connected to the MCU through level conversion. The main control chip is also connected to an A2B communication module and an AD sampling module for audio input.

[0011] Preferably, the power amplifier driver module uses two RTQ9128DH chips as power amplifier drivers. Each power amplifier driver chip is equipped with an independent power supply filter circuit, which consists of an inductor and a capacitor forming a π-type filter network to provide a stable and clean power supply to the chip. The audio input pin of the power amplifier driver chip is connected to the audio output interface of the main control chip, and the output pin is connected to the headrest speaker, the massage vibrator and the AVAS speaker respectively.

[0012] Preferably, the power module adopts a multi-stage power conversion and voltage regulation design, and the power module input port is equipped with two JMPL1050AGQ chips to prevent reverse connection and reverse current flow.

[0013] Preferably, the CAN transceiver circuit uses the SIT1042AQT as the CAN transceiver. The CANH and CANL pins of the SIT1042AQT are connected to the MCU's CAN transceiver through a common-mode inductor. At the same time, 120Ω terminating resistors are connected to the CANH and CANL lines respectively to match the bus impedance and ensure the stability and reliability of CAN bus data transmission.

[0014] Preferably, the LIN transceiver circuit uses SIT1021QT / 1 as the LIN transceiver, and pins 1 and 4 of the two SIT1021QT / 1 chips are connected to pins 55 and 53 and pins 56 and 57 of the MCU, respectively, for data transmission between the LIN transceiver and the MCU.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention highly integrates the core hardware circuits required for headrest speaker driving, seat massage control, and vehicle ambient lighting adjustment, covering visual, auditory, and tactile control during the driving process. Compared with traditional distributed controllers, it reduces a large amount of circuit board space and wiring harness, thereby reducing the overall vehicle hardware cost and wiring complexity.

[0016] 2. In terms of component selection, this invention uses high-performance, high-reliability chips, such as SIT1042AQT and SIT1021QT / 1, to ensure communication stability; the RTQ9128DH power amplifier driver chip and professional audio processing DSP improve the audio playback and massage control effects. At the same time, the optimized design of each module circuit, such as power filtering and signal processing, enhances the anti-interference ability and working stability of the entire hardware system and reduces the failure rate.

[0017] 3. The hardware circuit architecture of this invention enables efficient data interaction and collaborative work between various functional modules. The main control MCU can easily realize the linkage between ambient lighting, seat vibration massage and music through unified control logic and communication protocol. The ambient lighting adjustment module supports multiple communication control methods, which can not only flexibly interact with different types of devices in the car, but also realize richer ambient lighting linkage effects according to different scenario needs, further improving the user experience. Attached Figure Description

[0018] Figure 1 This is the electrical schematic diagram of the main control MCU of this invention.

[0019] Figure 2 This is the electrical schematic diagram of the CAN transceiver circuit of the present invention.

[0020] Figure 3 This is the electrical schematic diagram of the LIN transceiver circuit of the present invention.

[0021] Figure 4 This is the electrical schematic diagram of the audio processing module of the present invention.

[0022] Figure 5 This is the electrical schematic diagram of the A2B communication module in the audio input module of the present invention.

[0023] Figure 6 This is the electrical schematic diagram of the analog input circuit in the audio input module of the present invention.

[0024] Figure 7 This is the electrical schematic diagram of the power amplifier driver module of the present invention.

[0025] Figure 8 This is the electrical schematic diagram of the power module of the present invention.

[0026] Figure 9 This is a schematic diagram showing the connection of each functional module of the controller of the present invention. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0028] Please see Figure 1-8 The present invention provides the following technical solutions: The automotive audio-visual-touch integrated controller hardware device includes: MCU, which is connected to the control signal input terminals of each functional module through dedicated control pins, realizing the precise sending of control commands and the reception of status monitoring signals for different functional modules, and can efficiently coordinate the working timing and data interaction between modules.

[0029] The MCU used is the Qixin Micro FC4150F2M, and the minimum system schematic is as follows. Figure 1 As shown, the power input pins of the MCU (11, 12, 15, 34, 51, 68, 91, 123) are all connected to 100nF and 1nF capacitors for filtering. The MCU's pins (16, 52, 124) are the MCU's internal 1.1V output pins, which are connected to external 100nF and 1nF capacitors for filtering. Pin 17 is the MCU's internal 2.5V output pin, which is connected to external 220nF, 10nF, and 1nF capacitors for filtering.

[0030] Pins 19 and 20 of the MCU are connected to an external quartz crystal to provide the clock signal. The reset circuit consists of R86 and C88. The resistor charges the capacitor, and the capacitor voltage slowly rises until it reaches VCC. During the capacitor charging process, the chip's reset pin is at a low level, thus resetting the chip. When the voltage approaches VCC, the chip's reset pin goes high, stopping the reset process and completing the reset. The reset circuit is directly connected to pin 141 of the MCU.

[0031] The ambient lighting adjustment module is electrically connected to the corresponding port on the MCU. The ambient lighting adjustment module supports three communication control methods: CAN, LIN, and UART-CAN, to meet the diverse control and interaction needs of ambient lighting.

[0032] The ambient lighting adjustment module includes five CAN transceiver circuits and two LIN transceiver circuits. The two CAN transceiver circuits are connected to the MCU's CAN transceiver via common-mode inductors. These two CAN transceiver circuits can communicate with other modules and the vehicle body via CAN. The CAN transceiver circuits are as follows: The CAN bus communication circuit uses the domestically produced SIT1042AQT as the CAN transceiver. This chip supports the CAN 2.0 protocol and has excellent electromagnetic compatibility and anti-interference capabilities. The CANH and CANL pins of the SIT1042AQT are connected to the MCU's CAN transceiver via common-mode inductors. Simultaneously, 120Ω terminating resistors are connected to the CANH and CANL lines respectively to match the bus impedance, ensuring the stability and reliability of CAN bus data transmission, and enabling stable data interaction with the vehicle's high-speed electronic systems. Pins 1 and 4 of the two SIT1042AQTs are connected to the main control MCU's PTB13, PTB12, PTA17, and PTB17 pins, respectively. Pin 8 is connected to the main control MCU's pins 94 and 99 to control the SIT1042AQT's operating mode.

[0033] In addition, there are three CAN transceiver circuits connected to the main control MCU. These CAN transceiver circuits are the same as the two mentioned above, but they are connected to the MCU's UART pins, enabling UART signals to travel through the CAN physical layer, thus overcoming the limitation of UART signals not being able to transmit over long distances. It supports proprietary UART-based protocol transmission defined by chip manufacturers (such as Indicchip and Lominchip), and can be used for high-speed serial communication to achieve single-lamp control of running lights or surface light sources.

[0034] The controller also features two LIN transceiver circuits for controlling the ambient lighting in LIN communication. The LIN transceiver used is the SIT1021QT / 1, which serves as the master node. To reduce the controller's quiescent current, a MOS switch circuit is used to control the pull-up power supply of the LIN master node. When EN-LIN-POWER is floating or low, the transistor PDTC124EU is cut off, and the MOS transistor turns off the pull-up power supply of the LIN master node. Conversely, when EN-LIN-POWER is high, the pull-up power supply of the LIN master node is turned on. The TVS diode for the LIN bus is JEB24D3H, which effectively ensures stable operation of LIN communication under harsh conditions (such as electrostatic discharge caused by dryness, resulting in voltage spikes on the LIN bus). Pins 1 and 4 of the two SIT1021QT / 1 chips are connected to pins 55 and 53 and pins 56 and 57 of the main control MCU, respectively, for data transmission between the LIN chip and the MCU. L1-SLP_N and L2-SLP_N are the enable input ports of the SIT1021QT / 1. A high level enables the device to enter normal mode, and a low level enables the device to enter sleep mode.

[0035] The audio input and processing module is electrically connected to the corresponding port on the MCU. The audio input and processing module is designed with a dual-mode audio input circuit, including analog input of the vehicle body power amplifier signal and A2B audio input.

[0036] The audio input and processing module uses an ADSP1802 as its main control chip. The ADSP1802 serves as the core digital signal processor (DSP) of the controller in this invention, used for receiving, processing, and distributing audio data. Its specific structure is as follows: The ADSP1802's power supply is divided into VDD_EXT (external power supply) and VDD_INT (internal power supply). The clock signal is provided by a Y2 crystal oscillator (XL2EL89COI-111YLC-24.576M). The two ends of the crystal oscillator are connected to pins 9 and 10 of the DSP, respectively, and a 12pF load capacitor is connected in series to ensure a stable output of the 24.576MHz clock signal, providing a reference timing for audio sampling (such as the 48kHz standard sampling rate).

[0037] The I²S audio signal output by the AD1939 codec chip is connected to pins 31, 34, 35, and 36 of the DSP via the TDM bus to receive the audio data stream; the processed audio data is transmitted to the power amplifier via the TDM-OUT ports (DPI_P12, DPI_P13).

[0038] This invention also supports A2B signal input, using the AD2428 for A2B communication. Pins 37, 38, 42, and 45 of the DSP are connected to the TDM interface of the AD2428 to receive audio data from the AD2428's A2B bus, enabling longer control distances and providing more stable and reliable signals. UART-RX and UART-TX, configured on pins 29 and 30 of the DSP, are connected to pins 58 and 60 of the main control MCU (FC4150F2M) via a level converter NXB0108-PW to achieve bidirectional data exchange.

[0039] The DSP's four FLAG interfaces are also connected to the MCU after level conversion. The DSP extracts spectral features by performing FFT transformation on the input audio signal, and transmits the processed data to the MCU via serial port. After parsing, the MCU controls the color and brightness changes of the ambient lights via LIN or CAN, thereby achieving precise synchronization between the ambient lights and the music rhythm. The DSP is also connected to an external FLASH to store the program and AVAS audio files. After audio processing, it can simulate sound waves at different speeds to warn pedestrians. The DSP's #RESET pin is connected to 3.3V through a 10KΩ pull-up resistor. When the system powers on, the RESET output of the power detection chip ADM708SARZ is low, triggering the DSP reset. After 200ms, it is pulled high to complete the DSP reset. The download interface uses a JTAG interface, including TRST, TMS, TDO, TDI, and TCK pins, which support program burning and debugging when connected to debugging tools.

[0040] Regarding the audio input section, this invention supports either A2B or analog audio input modes. The schematic diagram of the A2B communication module is shown below. Figure 5 The A2B communication chip uses the AD2428. The A2B bus interface of the AD2428 adopts a differential signal transmission design. The input terminals (A2B-INP, A2B-INN) are connected to the external audio source device through a matching network. Specifically, the A2B-INP pin is connected in series with an MLZ2012M3R3HTD25 inductor L31 (3.3μH), and the A2B-INN pin is connected in series with an inductor of the same type L33 (3.3μH). 33nF capacitors C336 (A2B-INP side) and C337 (A2B-INN side) are connected in parallel at the rear of the inductors, forming a low-pass filter network to suppress high-frequency noise and match the transmission line impedance. The A2B module transmits digital audio data to the DSP via TDM.

[0041] In automotive audio signal processing scenarios, analog inputs can be directly connected to the output of the vehicle's power amplifier. A resistor network performs voltage division and filtering on the differential input, and the processed signal is then fed into the AD8656ARMZ operational amplifier, which handles high-frequency signal filtering. The signal is then transmitted differentially to the AD1939, decoded, and finally transmitted to the DSP via the I2S interface. This establishes a complete audio signal path from analog input to digital processing, ensuring the quality of audio signal conversion and transmission, and contributing to improved performance of the automotive audio system. From the circuit layout (see attached diagram), after the signal is input to the vehicle's power amplifier output, it undergoes voltage division and filtering via a resistor network to match the input requirements of the AD8656ARMZ. The processed signal is then accurately transmitted to the AD1939. Through the AD1939's decoding and the I2S interface, data interaction with the DSP is achieved. The various circuit modules work together to support the effective operation of the aforementioned audio signal processing flow.

[0042] The power amplifier driver module is electrically connected to the ports on the audio input and processing module. It is used to drive the headrest speakers, AVAS, and the vibrating massager of the seat. The power amplifier driver module uses two RTQ9128DH chips as power amplifier drivers. These chips have high power output capability and low distortion characteristics. Each power amplifier driver chip is equipped with an independent power supply filter circuit, which consists of an inductor and a capacitor forming a π-type filter network to provide a stable and clean power supply to the chip.

[0043] The audio input pins of the RTQ9128DH chip are connected to the audio output interface of the DSP. The output pins are connected to the headrest speaker, massage vibrator, and AVAS speaker, respectively. External power supply is provided through a power filtering network consisting of inductor L14 and multiple sets of filter capacitors, ensuring stable power for the chip and each output branch (PVDD_A, DVDD_A, etc.) and reliable circuit operation. The IIC communication address is configured via R15, R160, R292, and R293, supporting multiple custom slave addresses. The audio signal is transmitted through the TDM digital interface to the RTQ91128, which analyzes and outputs differential audio signals from the OUTP, OUTN, and other series of pins. The output signal is filtered, shaped, and impedance matched by a filtering and matching network composed of inductors (L11-L20), capacitors (such as C139, C140, etc.), resistors (R123-R131, etc.), and PMHA0630-3R3M0T devices, and finally output from the J11 interface to the load, supplying the speaker or vibrator.

[0044] The power module has its input end connected to the vehicle's power supply and its output end connected to the power input ends of each functional module, providing power to those modules. The power supply section of this invention employs a multi-stage power conversion and voltage regulation design to meet the power supply requirements of each functional module. Two JMPL1050AGQ devices are provided at the power input port, serving as critical power protection devices with reverse connection and reverse current protection functions. The JMPL1050AGQ is connected in series in the power input line. When the positive and negative terminals of the power supply are reversed, the internal protection mechanism of the JMPL1050AGQ is activated, blocking the current path and preventing damage to internal circuit components due to reverse connection. In the complex electrical environment of a vehicle, when other devices generate reverse current, the JMPL1050AGQ can effectively prevent reverse current from flowing into this controller device, protecting the safe and stable operation of the internal circuitry.

[0045] After being protected by the JMPL1050AGQ, the power supply, along with capacitors and inductors, performs preliminary filtering to remove high-frequency noise from the input power, providing relatively clean initial power for subsequent circuits and ensuring power input stability. The relatively stable power input is then fed into the JWQ5103, which first steps down the voltage to 3.8V before connecting it to the JWQ7806 and JWQ7821 to output 1.1V and 3.3V respectively to power the subsequent DSP and other digital and analog circuits.

[0046] For the main control MCU, a separate diode is used to prevent reverse connection and is connected to the RTQ2569 power conversion chip to convert the voltage to 5V to power the MCU. The advantage of using a separate diode is that the power supply can be independently controlled to achieve lower sleep current and power consumption control. The CAN transceiver is powered by another RTQ2569 to prevent interference. All voltage conversion chips are automotive-grade components to ensure stable and reliable power supply.

[0047] This invention abandons the traditional approach of using separate controllers for functions such as headrest speaker driving, seat vibration 4D massage control, and ambient lighting adjustment in smart cockpits. Instead, it integrates the core hardware circuitry required for these functions into a single controller device. The integrated audio-visual-touch controller uses the FC4150F2M main control MCU as its core. This MCU serves as the control hub for the entire hardware circuitry, possessing high-speed data processing and multi-task collaboration capabilities. It integrates a rich set of peripheral interfaces, providing a foundation for connecting with other functional modules. The main control MCU connects to the control signal input terminals of each functional module via dedicated control pins, enabling precise control command transmission and status monitoring signal reception for different functional modules. This allows for efficient coordination of the working timing and data interaction between modules. Through rational planning and design of the functional module circuits, a significant amount of circuit board space and wiring harnesses are reduced. Compared to traditional solutions, the saved circuit board area significantly reduces the overall vehicle hardware cost and wiring complexity.

[0048] The ambient light adjustment module of the present invention supports three communication control methods: CAN, LIN, and UART-CAN. In the prior art, the communication method for ambient light control is single, which is difficult to meet the diverse interaction requirements. The present invention supports two CAN buses, one for communicating with the vehicle-mounted central control system. Other ambient light surface light sources or line light sources that require CAN communication are controlled through the other CAN bus; the controller also has two LIN communication interfaces for controlling LIN communication ambient lights such as instrument panels, door panel ambient lights, and point light sources; UART-CAN is used to implement an LED driver chip that requires serial communication. It adopts the physical layer of CAN to transmit serial data, supports faster speed and higher efficiency, has better stability compared to serial ports, effectively solves the problem of short UART communication distance and easy interference, supports a custom protocol based on the serial port bottom layer, and can achieve richer linkage effects.

[0049] The audio input and processing module designs a dual-mode audio input circuit, namely, body amplifier signal analog input and A2B audio input. Most existing solutions only support a single input mode, lacking flexibility. In the sound-light-touch integrated controller, the audio signal first passes through an attenuation circuit composed of resistors and capacitors to adjust the signal amplitude to the input range of the AD1939 codec chip, and then passes through a second-order low-pass filter circuit to remove high-frequency noise, ensuring a pure analog audio signal input. The AD1939 codec chip converts the analog audio signal into a digital signal and connects to the DSP through the I²S bus. In the body digital input circuit, the A2B audio input circuit uses the AD2428 as the A2B communication chip. It connects to the audio source device through a dedicated A2B bus, receives digital audio signals, and conducts data interaction with the DSP through the TDM interface. Both are connected to a high-performance DSP for processing. This design not only meets the access requirements of different audio sources but also realizes the deep optimization of audio through various audio processing algorithms built into the DSP, such as equalization adjustment, noise reduction processing, and surround sound effect simulation, significantly improving the audio playback quality. The DSP can extract the details of the low-frequency audio for processing to achieve the effect of seat vibration massage following the rhythm of the music. The DSP has an external FLASH that can directly read the pre-stored audio data in the FLASH, process it, and output the required sound through the power amplifier to achieve the function of AVAS or other custom sound effects.

[0050] The power amplifier driver module uses two RTQ9128DH chips as power amplifier drivers, supporting 8-channel output to drive the headrest speakers, AVAS, and seat vibration massagers. For the massagers, the power amplifier circuit converts digital signals into the waveforms required to drive the massagers, enabling control of different massage intensities and modes. Simultaneously, the main control MCU communicates with the DSP via serial port, receiving processed audio data from the DSP to control the ambient lighting's rhythmic movement with the music, achieving efficient coordination between the headrest speakers, seat massagers, and ambient lighting, thus enhancing the user experience.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hardware device for an integrated automotive sound, light, and touch controller, characterized in that, include: The MCU is connected to the control signal input terminals of each functional module through dedicated control pins, enabling precise control command transmission and status monitoring signal reception for different functional modules, and efficiently coordinating the working timing and data interaction between modules. An ambient light adjustment module is electrically connected to a corresponding port on the MCU. The ambient light adjustment module supports three communication control methods: CAN, LIN, and UART-CAN, to meet the diverse control and interaction needs of ambient lights. An audio input and processing module is electrically connected to a corresponding port on the MCU. The audio input and processing module is designed with a dual-mode audio input circuit, including analog input of the vehicle body amplifier signal and A2B audio input. The power amplifier driver module is electrically connected to the port on the audio input and processing module and is used to drive the headrest speakers, AVAS and seat vibration massage oscillators. The power module has its input terminal connected to the vehicle body power supply and its output terminal connected to the power input terminals of each functional module, and is used to supply power to each functional module.

2. The automotive audio-visual-touch integrated controller hardware device according to claim 1, characterized in that: The MCU uses the Qixin Micro FC4150F2M. The power input pins of the MCU (11, 12, 15, 34, 51, 68, 91, 123) are all connected to 100nF and 1nF capacitors for filtering. The MCU's internal 1.1V output pins (16, 52, 124) are connected to external 100nF and 1nF capacitors for filtering. Pin 17 is the MCU's internal 2.5V output pin, connected to external 220nF, 10nF, and 1nF capacitors for filtering. The MCU's pins 19 and 20 are connected to an external quartz crystal to provide a clock for the MCU. The reset circuit consists of R86 and C88 and is directly connected to the MCU's pin 141.

3. The automotive audio-visual-touch integrated controller hardware device according to claim 1, characterized in that: The ambient light adjustment module includes five CAN transceiver circuits and two LIN transceiver circuits. The two CAN transceiver circuits are connected to the MCU's CAN transceiver via a common-mode inductor, and the other three CAN transceiver circuits are connected to the MCU's UART pins. The two LIN transceiver circuits are connected to the MCU's pins 55, 53, 56, and 57.

4. The automotive audio-visual-touch integrated controller hardware device according to claim 1, characterized in that: The audio input and processing module uses an ADSP1802 main control chip for receiving, processing, and distributing audio data. The UART-RX and UART-TX pins 29 and 30 of the main control chip are connected to pins 58 and 60 of the MCU via a level converter NXB0108-PW to achieve bidirectional data interaction. The four FLAG interfaces of the main control chip are connected to the MCU via level conversion. The main control chip also has an A2B communication module and an AD sampling module connected to it for audio input.

5. The automotive audio-visual-touch integrated controller hardware device according to claim 4, characterized in that: The power amplifier driver module uses two RTQ9128DH chips as power amplifier drivers. Each power amplifier driver chip is equipped with an independent power supply filter circuit, which consists of an inductor and a capacitor forming a π-type filter network to provide a stable and clean power supply to the chip. The audio input pin of the power amplifier driver chip is connected to the audio output interface of the main control chip, and the output pin is connected to the headrest speaker, the massage vibrator and the AVAS speaker respectively.

6. The automotive audio-visual-touch integrated controller hardware device according to claim 1, characterized in that: The power module adopts a multi-stage power conversion and voltage regulation design. The power module input port is equipped with two JMPL1050AGQ chips, which serve to prevent reverse connection and reverse current flow.

7. The automotive audio-visual-touch integrated controller hardware device according to claim 3, characterized in that: The CAN transceiver circuit uses the SIT1042AQT as the CAN transceiver. The CANH and CANL pins of the SIT1042AQT are connected to the MCU's CAN transceiver through a common-mode inductor. At the same time, 120Ω terminating resistors are connected to the CANH and CANL lines respectively to match the bus impedance and ensure the stability and reliability of CAN bus data transmission.

8. The automotive audio-visual-touch integrated controller hardware device according to claim 3, characterized in that: The LIN transceiver circuit uses SIT1021QT / 1 as the LIN transceiver. Pins 1 and 4 of the two SIT1021QT / 1 chips are connected to pins 55 and 53 and pins 56 and 57 of the MCU, respectively, for data transmission between the LIN transceiver and the MCU.

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