Driving system for automobile music seat

Abstract

The utility model provides a driving system for an automobile music seat, and belongs to the technical field of audio driving. The driving system for the automobile music seat comprises a voltage reduction module, an analog-to-digital conversion module, an MCU module, a signal coupling module, an audio power amplifier, an impedance matching module, a power supply filtering module and an output module, the input end of the step-down module is used for receiving music power amplifier signals, and the output end of the step-down module is connected with the input end of the analog-to-digital conversion module; the input end of the MCU module is connected with the output end of the analog-to-digital conversion module; the output end of the MCU module is connected with the signal coupling module; the audio power amplifier is respectively connected with the output end of the signal coupling module, the impedance matching module, the power supply filtering module and the output module; and the output module is used for outputting an audio driving signal to drive the automobile music seat. The driving accuracy and reliability of the automobile music seat can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of audio drive technology, and more particularly to a drive system for automotive music seats. Background Technology

[0002] As consumers increasingly demand comfort and personalization in automobiles, music-inspired seats have emerged as a new trend. These seats capture audio signals and convert them into low-frequency vibrations, allowing drivers and passengers to "feel" the rhythm of the music. However, current solutions generally suffer from poor compatibility, resulting in unsatisfactory rhythm effects and limiting their market adoption. Most existing music-inspired seat solutions are designed for high-end models, making them difficult to adapt to ordinary vehicles. Furthermore, the vibration signal accuracy is low: existing low-frequency vibration outputs cannot accurately synchronize with the music rhythm, resulting in a poor user experience.

[0003] Therefore, there is an urgent need for an accurate and reliable drive system for car music seats. Utility Model Content

[0004] This disclosure provides a drive system for automotive music seats to address the current problem of poor drive performance in music seats.

[0005] This disclosure provides a drive system for an automotive music seat, comprising:

[0006] Step-down module, analog-to-digital converter module, MCU module, signal coupling module, audio power amplifier, impedance matching module, power supply filtering module, and output module;

[0007] The input terminal of the buck converter is used to receive the music amplifier signal, and the output terminal of the buck converter is connected to the input terminal of the analog-to-digital converter.

[0008] The input terminal of the MCU module is connected to the output terminal of the analog-to-digital converter module; the output terminal of the MCU module is connected to the signal coupling module.

[0009] The audio power amplifier is connected to the output of the signal coupling module, the impedance matching module, the power supply filtering module, and the output module, respectively.

[0010] The output module is used to output audio drive signals to drive the car's music seats.

[0011] In one exemplary embodiment of this disclosure, the music amplifier signal includes a first music amplifier signal and a second music amplifier signal. The step-down module includes: resistors R1, R2, R3, R4, R5, and R6; common mode choke EE1; common mode choke EE2; and sliding rheostat RP1 and sliding rheostat RP2.

[0012] The first end of resistor R1 and the second end of common mode choke EE1 are used to receive the first music amplifier signal, and the first end of resistor R4 and the second end of common mode choke EE2 are used to receive the second music amplifier signal.

[0013] The second end of resistor R1 is connected to the first end of resistor R2 and the first end of common mode choke EE1 respectively; the second end of resistor R2 is connected to the second end of common mode choke EE1.

[0014] The second end of resistor R4 is connected to the first end of resistor R5 and the first end of common mode choke EE2 respectively; the second end of resistor R5 is connected to the second end of common mode choke EE2.

[0015] The first end of the sliding rheostat RP1 is connected to the third end of the common mode choke EE1; the second end of the sliding rheostat RP1 is connected to the fourth end of the common mode choke EE1, the third end of the common mode choke EE2, and the first end of the sliding rheostat RP2; the sliding end of the sliding rheostat RP1 is connected to the first end of the resistor R3, and the second end of the resistor R3 is the first output end of the step-down module.

[0016] The first terminal of the sliding rheostat RP2 is used for grounding; the second terminal of the sliding rheostat RP2 is connected to the fourth terminal of the common mode choke EE2; the sliding terminal of the sliding rheostat RP2 is connected to the first terminal of the resistor R6, and the second terminal of the resistor R6 is the second output terminal of the step-down module.

[0017] In one exemplary embodiment of this disclosure, the analog-to-digital conversion module includes: an audio codec unit, a power supply decoupling unit, and a crystal oscillator unit;

[0018] Both the power supply decoupling unit and the crystal oscillator unit are connected to the audio codec unit. The analog input terminal of the codec unit is the input terminal of the analog-to-digital converter module, and the output terminal of the audio codec unit is the output terminal of the analog-to-digital converter module.

[0019] In one exemplary embodiment of this disclosure, the crystal oscillator unit includes: a crystal oscillator chip, a capacitor C16, a capacitor C20, a resistor R19, and a resistor R20;

[0020] The first terminal of capacitor C16 is used for grounding, the second terminal of capacitor C16 is used for connection to the power supply, and the second terminal of capacitor C16 is connected to the power supply terminal of the crystal oscillator chip.

[0021] The enable terminal of the crystal oscillator chip receives the enable signal through resistor R19, and the enable terminal of the crystal oscillator chip is connected to the ground terminal of the crystal oscillator chip through resistor R20.

[0022] The output terminal of the crystal oscillator chip is connected to the ground terminal of the crystal oscillator chip through capacitor C20;

[0023] The output of the crystal oscillator chip is connected to the clock input of the audio codec unit.

[0024] In one exemplary embodiment of this disclosure, the output terminal of the MCU module includes a first output terminal and a second output terminal;

[0025] The signal coupling module includes: capacitor C61, capacitor C65, capacitor C67 and capacitor C69;

[0026] The first terminal of capacitor C67 is connected to the first output terminal of the MCU module, the first terminal of capacitor C69 is grounded, and the second terminals of capacitor C67 and capacitor C69 are connected to the first audio input terminal of the audio power amplifier.

[0027] The first terminal of capacitor C61 is connected to the second output terminal of the MCU module, the first terminal of capacitor C65 is grounded, and the second terminals of capacitor C61 and capacitor C65 are connected to the second audio input terminal of the audio power amplifier.

[0028] In one exemplary embodiment of this disclosure, the impedance matching module includes: resistor R41, resistor R44, resistor R47, and capacitor C70;

[0029] Resistor R44 is connected to the power supply through resistor R41; resistor R44 is connected to resistor R47 through capacitor C70.

[0030] The first terminal of resistor R47 is used for grounding;

[0031] The first terminal of resistor R41 is connected to the shutdown control terminal of the audio power amplifier;

[0032] The second end of resistor R47 is connected to the mute control terminal of the audio power amplifier.

[0033] In one exemplary embodiment of this disclosure, the power filtering module includes:

[0034] Capacitors C55, C56, C57, C58, C76, C77, and inductor L7;

[0035] The first terminal of capacitor C55 is connected to the first terminal of capacitor C56 and the positive terminal of capacitor C57, respectively; the first terminal of capacitor C55 is connected to the power supply through inductor L7.

[0036] The second terminal of capacitor C55 is connected to the second terminal of capacitor C56 and the negative terminal of capacitor C57 respectively. The second terminal of capacitor C57 is used for grounding.

[0037] The positive terminal of capacitor C58 is connected to the first terminal of capacitor C76 and the first terminal of capacitor C77, respectively.

[0038] The negative terminal of capacitor C58 is connected to the second terminal of capacitor C76 and the second terminal of capacitor C77, respectively.

[0039] The negative terminal of capacitor C58 is used for grounding.

[0040] In one exemplary embodiment of this disclosure, a drive system for an automotive music seat further includes: a filtering module;

[0041] The filtering module is connected to both the output module and the audio power amplifier.

[0042] The filtering module includes: inductors L8, L9, L10, L11, capacitor C66, and capacitor C71;

[0043] The first terminals of inductor L10 and inductor L11 are connected to the first audio output terminal of the audio power amplifier.

[0044] The first terminal of inductor L8 and the first terminal of inductor L9 are both connected to the second audio output terminal of the audio power amplifier.

[0045] The second terminals of inductors L10, L11, L8, and L9 are all used to output multi-channel audio drive signals.

[0046] In one exemplary embodiment of this disclosure, the output module includes:

[0047] Capacitors C59, C63, C72, and C74; resistors R42, R43, R45, and R46; capacitors C60, C64, C73, and C75; diodes ESD3, ESD4, ESD5, and ESD6.

[0048] The first terminal of capacitor C59 is connected to the first terminal of resistor R42 and the first terminal of diode ESD3 respectively; the second terminal of capacitor C59 is used for grounding.

[0049] The first terminal of capacitor C63 is connected to the second terminal of capacitor C59; the second terminal of capacitor C63 is connected to the first terminal of resistor R43 and the first terminal of diode ESD4 respectively.

[0050] The second terminal of resistor R42 is connected to the second terminal of diode ESD3 through capacitor C60;

[0051] The second terminal of resistor R43 is connected to the second terminal of diode ESD4 through capacitor C64;

[0052] The second terminal of diode ESD3 is connected to the second terminal of diode ESD4;

[0053] The first terminal of capacitor C72 is connected to the first terminal of resistor R45 and the first terminal of diode ESD5; the second terminal of capacitor C72 is used for grounding.

[0054] The first terminal of capacitor C74 is connected to the second terminal of capacitor C72; the second terminal of capacitor C74 is connected to the first terminal of resistor R46 and the first terminal of diode ESD6 respectively.

[0055] The second terminal of resistor R45 is connected to the second terminal of diode ESD5 through capacitor C73;

[0056] The second terminal of resistor R46 is connected to the second terminal of diode ESD6 through capacitor C75;

[0057] The second terminal of diode ESD5 is connected to the second terminal of diode ESD6.

[0058] The first terminal of capacitor C59 is connected to inductor L8; capacitor C63 is connected to inductor L9; the first terminal of capacitor C72 is connected to inductor L10; and the first terminal of capacitor C74 is connected to inductor L11.

[0059] In one embodiment of this disclosure, a drive system for an automotive music seat further includes: a communication module;

[0060] The communication module includes: a transceiver unit, a second power supply decoupling unit, and a connector unit;

[0061] The communication terminal of the MCU module is connected to the communication terminal of the transceiver unit; the wake-up terminal of the MCU module is connected to the suppression output terminal of the transceiver unit.

[0062] The MCU module is connected to the test data input terminal of the connector unit;

[0063] The second power decoupling unit is connected to the power supply terminal of the transceiver unit.

[0064] The beneficial effects of the drive system for automotive music seats provided in this disclosure embodiment are as follows:

[0065] This disclosure utilizes a step-down module to receive and step down the music amplifier signal, ensuring signal stability and reliability in subsequent processing. An analog-to-digital converter (ADC) module converts the stepped-down analog signal into a digital signal, providing precise digital input to the MCU module and improving signal processing accuracy. A signal coupling module ensures signal integrity and stability; the audio power amplifier receives control signals from the MCU module and amplifies them, providing sufficient driving force for the car's music seat. An impedance matching module ensures impedance matching between the audio power amplifier and the output module, reducing signal reflection and distortion, and improving audio output quality and efficiency. A power supply filtering module provides a stable power supply to the audio power amplifier, reducing the impact of power fluctuations on audio output, ensuring the purity and stability of the audio signal, and improving the accuracy and reliability of the car's music seat drive. Attached Figure Description

[0066] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0067] Figure 1 This is a schematic diagram of the structure of a drive system for an automotive music seat provided in an embodiment of this disclosure;

[0068] Figure 2 This is a schematic diagram of the structure of a second drive system for an automotive music seat provided in an embodiment of this disclosure;

[0069] Figure 3 This is a schematic diagram of the structure of a third type of drive system for a car music seat provided in this embodiment of the present disclosure;

[0070] Figure 4 This is a schematic diagram of the structure of the fourth type of drive system for a car music seat provided in the embodiments of this disclosure;

[0071] Figure 5 This is a schematic diagram of the fifth type of drive system for a car music seat provided in this disclosure embodiment;

[0072] Figure 6 This is a schematic diagram of the sixth type of drive system for a car music seat provided in this disclosure. Detailed Implementation

[0073] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of this solution will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this solution, not all of them. Based on the embodiments of this solution, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this solution.

[0074] The term "comprising" and any other variations thereof in the specification, claims, and accompanying drawings of this invention mean "including but not limited to," and are intended to cover a non-exclusive inclusion, not limited to the examples listed herein. Furthermore, the terms "first" and "second," etc., are used to distinguish different objects, not to describe a specific order.

[0075] The implementation of this disclosure will be described in detail below with reference to the specific accompanying drawings:

[0076] Figure 1 This is a schematic diagram of a drive system for an automotive music seat, provided as an embodiment of this disclosure. (Refer to...) Figure 1 The drive system for a car music seat includes: a step-down module 10, an analog-to-digital converter module 11, an MCU module 12, a signal coupling module 13, an audio power amplifier 14, an impedance matching module 15, a power supply filtering module 16, and an output module 17.

[0077] The input terminal of the step-down module 10 is used to receive music amplifier signals, and the output terminal of the step-down module 10 is connected to the input terminal of the analog-to-digital converter module 11.

[0078] The input terminal of MCU module 12 is connected to the output terminal of analog-to-digital converter module 11; the output terminal of MCU module 12 is connected to signal coupling module 13.

[0079] The audio power amplifier 14 is connected to the output terminal of the signal coupling module 13, the impedance matching module 15, the power filtering module 16 and the output module 17 respectively.

[0080] Output module 17 is used to output audio drive signals to drive the car music seat.

[0081] In this embodiment, the input terminal of the step-down module 10 is used to receive the music amplifier signal, and the output terminal of the step-down module 10 is connected to the input terminal of the analog-to-digital converter module 11 to perform step-down processing on the input music amplifier signal. The analog-to-digital converter and other modules need to be adapted to a specific voltage range. The step-down module 10 can ensure that the signal voltage input to the analog-to-digital converter module 11 is in a suitable range, thus ensuring the accuracy and stability of the analog-to-digital conversion.

[0082] The analog-to-digital converter (ADC) module 11 receives the signal processed by the step-down module 10 and converts the continuous analog music signal into a digital signal so that it can be recognized and processed by the MCU module 12, thus realizing the analog-to-digital signal conversion. The MCU module 12 stores a logic algorithm for converting audio signals into drive signals. The MCU module 12 can receive the raw audio signal (I2S) input from the ADC module 11, process it internally using a real-time DSP algorithm, filter out high-frequency signals in the audio, and retain the low-frequency vibration signal to drive the exciter in the power amplifier chip. The MCU model can be FS32K144HFT0MLLT.

[0083] The signal coupling module 13 is used for AC coupling of the input signal, blocking the DC component while allowing the audio signal to pass through.

[0084] The audio power amplifier 14 is connected to the output of the signal coupling module 13, the impedance matching module 15, the power filtering module 16, and the output module 17, respectively, to amplify the power of the coupled music signal to enhance its driving capability and enable it to have sufficient power to drive the vibration of the car music seat.

[0085] Impedance matching module 15 works in conjunction with audio power amplifier 14. By adjusting the impedance characteristics of the circuit, audio power amplifier 14 can operate under optimal load conditions, maximizing the efficient transmission of power to the subsequent output module 17 and the final car music seat, avoiding problems such as signal reflection and power loss caused by impedance mismatch, and ensuring efficient utilization of audio power.

[0086] The power supply filtering module 16 is connected to the audio power amplifier 14. It filters the power supply of the drive system, removes interference components such as ripple and noise in the power supply, and provides a stable and clean power supply for the audio power amplifier 14 and other related modules. This ensures that the audio signal is not affected by power supply interference during amplification and subsequent transmission, and maintains stable audio quality.

[0087] The output module 17 receives the audio signal amplified by the audio power amplifier 14 and processed by the relevant modules, and finally outputs the audio drive signal to drive the car music seat, so that the car music seat can generate a corresponding vibration effect based on the received audio drive signal, thus realizing the function of the music seat.

[0088] As can be seen from the above, this disclosure receives the music amplifier signal through the step-down module 10 and performs step-down processing to ensure the stability and reliability of the signal in subsequent processing. This disclosure uses the analog-to-digital converter module 11 to convert the stepped-down analog signal into a digital signal, providing precise digital input to the MCU module 12, thereby improving the accuracy of signal processing. The signal coupling module 13 ensures the integrity and stability of the signal. The audio power amplifier 14 receives the control signal output from the MCU module 12 and amplifies it to provide sufficient driving force for the car music seat. The impedance matching module 15 ensures impedance matching between the audio power amplifier 14 and the output module 17, reducing signal reflection and distortion, and improving the quality and efficiency of audio output. The power filtering module 16 provides a stable power supply to the audio power amplifier 14, reducing the impact of power fluctuations on audio output, ensuring the purity and stability of the audio signal, and improving the accuracy and reliability of the car music seat drive.

[0089] Figure 2 This is a schematic diagram of the structure of a second drive system for an automotive music seat provided in this embodiment; see reference. Figure 2 In one embodiment of this disclosure, the music amplifier signal includes a first music amplifier signal and a second music amplifier signal. The step-down module 10 includes: resistors R1, R2, R3, R4, R5, and R6; common-mode choke EE1; common-mode choke EE2; and sliding rheostat RP1 and sliding rheostat RP2.

[0090] The first end of resistor R1 and the second end of common mode choke EE1 are used to receive the first music amplifier signal, and the first end of resistor R4 and the second end of common mode choke EE2 are used to receive the second music amplifier signal.

[0091] The second end of resistor R1 is connected to the first end of resistor R2 and the first end of common mode choke EE1 respectively; the second end of resistor R2 is connected to the second end of common mode choke EE1.

[0092] The second end of resistor R4 is connected to the first end of resistor R5 and the first end of common mode choke EE2 respectively; the second end of resistor R5 is connected to the second end of common mode choke EE2.

[0093] The first end of the sliding rheostat RP1 is connected to the third end of the common mode choke EE1; the second end of the sliding rheostat RP1 is connected to the fourth end of the common mode choke EE1, the third end of the common mode choke EE2, and the first end of the sliding rheostat RP2; the sliding end of the sliding rheostat RP1 is connected to the first end of the resistor R3, and the second end of the resistor R3 is the first output end of the step-down module 10.

[0094] The first end of the sliding rheostat RP2 is used for grounding; the second end of the sliding rheostat RP2 is connected to the fourth end of the common mode choke EE2; the sliding end of the sliding rheostat RP2 is connected to the first end of the resistor R6, and the second end of the resistor R6 is the second output end of the step-down module 10.

[0095] In this embodiment, the step-down module 10 further includes: diode ESD1 and diode ESD2;

[0096] The first terminal of diode ESD1 is connected to the first terminal of resistor R1, and the second terminal of diode ESD1 is connected to the second terminal of resistor R2.

[0097] The first terminal of diode ESD2 is connected to the first terminal of resistor R4, and the second terminal of diode ESD2 is connected to the second terminal of resistor R5.

[0098] In this embodiment, diodes ESD1 and ESD2 can be of type ESD5LC24V / D3BA. Diodes ESD1 and ESD2 can be transient voltage suppression diodes used to protect the circuit from voltage spikes. They can quickly respond to and clamp transient voltages exceeding their breakdown voltage, thereby protecting subsequent circuits.

[0099] Resistors R1, R2, R4, and R5 are current-limiting resistors. Resistors R1 and R2 are used to limit the current flowing through diode ESD1, while resistors R4 and R5 are used to limit the current flowing through diode ESD2 and to provide a certain impedance under normal operating conditions to reduce the conduction of high-frequency noise.

[0100] Common-mode chokes EE1 and EE2 can be of model number LK-003A, used to suppress common-mode noise. The common-mode choke presents high impedance to common-mode signals (i.e., the same signal on both input lines to ground) and low impedance to differential-mode signals (i.e., the signal between the two input lines).

[0101] Sliding rheostats RP1 and RP2, resistors R3 and R6 are used to form a voltage divider. In the output signal of the car amplifier, these resistors can divide the high-level signal to a lower level to accommodate the input voltage range of subsequent circuits.

[0102] As can be seen from the above, this disclosure, through the step-down module 10, can simultaneously process the first and second channel music amplifier signals, enhancing the signal processing capability and flexibility of this disclosure. This allows the disclosure to respond more comprehensively to complex music signals, providing richer and more accurate driving for the car music seat. Through the combination of resistors R1 to R6, common-mode chokes EE1 and EE2, and sliding rheostats RP1 and RP2, the step-down module 10 effectively reduces the music amplifier signal to the level required by subsequent circuits, ensuring signal purity and stability. The introduction of diodes ESD1 and ESD2 provides important protection for the circuit. As transient voltage suppression diodes, they can quickly respond to and clamp transient voltages exceeding their breakdown voltage, effectively preventing voltage spikes from damaging subsequent circuits and improving the reliability and durability of this disclosure. The use of common-mode chokes EE1 and EE2 effectively suppresses common-mode noise, reducing noise interference to the signal and helping to improve signal quality. This allows the car music seat to respond more accurately to music signals, improving the accuracy and reliability of the car music seat drive.

[0103] Figure 3 This is a schematic diagram of the third type of drive system for a car music seat provided in this disclosure embodiment, referring to... Figure 3 In one embodiment of this disclosure, the analog-to-digital conversion module 11 includes: an audio codec unit, a power supply decoupling unit, and a crystal oscillator unit;

[0104] Both the power supply decoupling unit and the crystal oscillator unit are connected to the audio codec unit. The analog input terminal of the codec unit is the input terminal of the analog-to-digital converter module 11, and the output terminal of the audio codec unit is the output terminal of the analog-to-digital converter module 11.

[0105] In one embodiment of this disclosure, the crystal oscillator unit includes: a crystal oscillator chip, a capacitor C16, a capacitor C20, a resistor R19, and a resistor R20;

[0106] The first terminal of capacitor C16 is used for grounding, the second terminal of capacitor C16 is used for connection to the power supply, and the second terminal of capacitor C16 is connected to the power supply terminal of the crystal oscillator chip.

[0107] The enable terminal of the crystal oscillator chip receives the enable signal through resistor R19, and the enable terminal of the crystal oscillator chip is connected to the ground terminal of the crystal oscillator chip through resistor R20.

[0108] The output terminal of the crystal oscillator chip is connected to the ground terminal of the crystal oscillator chip through capacitor C20;

[0109] The output of the crystal oscillator chip is connected to the clock input of the audio codec unit.

[0110] In this embodiment, the audio codec unit includes: resistors R11, R12, R13, R14, R15, R16, R17, R18, R21, R22, R23, R24, and R25; diodes TVS3 and TVS4; capacitors C17, C18, C19, C21, C22, and C23; and an audio codec.

[0111] The first and second ends of resistor R15 are both connected to the first output terminal of buck module 10, and the first and second ends of resistor R22 are both connected to the second output terminal of buck module 10.

[0112] The first terminal of diode TVS3 is connected to the first terminal of resistor R15 and the first terminal of capacitor C17 respectively. The second terminal of diode TVS3 is connected to the second terminal of resistor R15 and the first terminal of capacitor C21 respectively. The second terminal of capacitor C21 is used for grounding.

[0113] The first end of capacitor C17 is connected to the left channel audio input of the audio codec through resistor R14, and resistor R14 is grounded through capacitor C18.

[0114] The first terminal of diode TVS4 is connected to the first terminal of resistor R22 and the first terminal of capacitor C22 respectively; the second terminal of capacitor C22 is connected to the right channel input terminal of audio codec through resistor R21; the second terminal of resistor R21 is grounded through capacitor C19.

[0115] The second terminal of diode TVS4 is connected to the second terminal of resistor R22 and the first terminal of capacitor C23, respectively; the second terminal of capacitor C23 is used for grounding.

[0116] The first terminals of resistors R16, R17, and R18 are all used to connect to the power supply; the first terminals of resistors R23, R24, and R25 are used to ground; the second terminals of resistors R16 and R23 are both connected to the first functional terminal of the audio codec; the second terminals of resistors R17 and R24 are both connected to the second functional terminal of the audio codec; and the second terminals of resistors R18 and R25 are both connected to the audio format terminal of the audio codec.

[0117] The first output of the audio codec is connected to the MCU module 12 via resistor R11; the second output of the audio codec is connected to the MCU module 12 via resistor R12; the first output of the audio codec is connected to the MCU module 12 via resistor R13.

[0118] The power supply decoupling unit includes: capacitors C7, C8, C9, C10, C11, C12, C13, C14 and C15.

[0119] The first terminal of capacitor C7 and the first terminal of capacitor C8 are both used to connect to the power supply, and the second terminal of capacitor C7 and the second terminal of capacitor C8 are both used to ground; the first terminal of capacitor C7 and the first terminal of capacitor C8 are both connected to the reference signal terminal of the audio codec.

[0120] The first terminal of capacitor C9 and the first terminal of capacitor C10 are both used to connect to the power supply, and the second terminal of capacitor C9 and the second terminal of capacitor C10 are both used to ground; the first terminal of capacitor C9 and the first terminal of capacitor C10 are both connected to the first power input terminal of the audio codec.

[0121] The first terminal of capacitor C11 and the first terminal of capacitor C12 are both used to connect to the power supply, and the second terminal of capacitor C11 and the second terminal of capacitor C12 are both used to ground; the first terminal of capacitor C11 and the first terminal of capacitor C12 are both connected to the second power input terminal of the audio codec.

[0122] The first terminals of capacitors C13, C14, and C15 are all grounded; the first terminal of capacitor C13 is connected to the first output terminal of the audio codec through resistor R11; the first terminal of capacitor C14 is connected to the second output terminal of the audio codec through resistor R12; and the first terminal of capacitor C15 is connected to the third output terminal of the audio codec through resistor R13.

[0123] In this embodiment, resistor R15 is connected to the differential signal of the left channel, and resistor R22 is connected to the differential signal of the right channel. Diodes TVS3 and TVS4 are configured as a protection circuit to protect the circuit from voltage spikes and effectively reduce common-mode noise. The ALIN signal at the first output of the buck module 10 can be converted into two differential signals, LEFT IN+ and LEF IN-, using a differential amplifier circuit with single-ended input and dual-ended output. Similarly, the ARIN signal at the second output of the buck module 10 can be converted into two differential signals, RIGHT IN+ and RIGHT IN-.

[0124] The power decoupling unit is configured to decouple the power supply, reducing the impact of power supply noise on the performance of the audio codec unit. The power decoupling unit uses multiple capacitors to reduce the impact of power supply fluctuations on the audio codec. By using multiple capacitors in parallel, this unit can effectively absorb high-frequency noise and transient voltage changes in the power supply, providing a stable power supply voltage for the audio codec.

[0125] The introduction of the crystal oscillator unit provides a precise clock signal for the audio codec, ensuring the consistency of the audio signal sampling rate and processing speed, and further improving the stability of the system.

[0126] The input analog audio signals of the left and right channels are converted into digital signals by an audio codec and sent to the MCU module 12. The audio codec model can be PCM1808-Q1.

[0127] As can be seen from the above, the storage unit and the audio codec unit in this disclosure can efficiently transfer data, store configuration data, and store important information such as calibration parameters. This allows the analog-to-digital conversion module 11 to flexibly adapt to different application scenarios while ensuring the accuracy and stability of audio signal processing. This disclosure reduces the impact of power supply noise on the performance of the audio codec unit through a power supply decoupling unit, ensuring the purity and stability of the audio signal during conversion, improving the quality of the audio signal, reducing noise interference, and enhancing the accuracy and reliability of the music seat drive.

[0128] In one embodiment of this disclosure, the output terminals of the MCU module 12 include a first output terminal and a second output terminal;

[0129] The signal coupling module 13 includes: capacitor C61, capacitor C65, capacitor C67 and capacitor C69;

[0130] The first terminal of capacitor C67 is connected to the first output terminal of MCU module 12, the first terminal of capacitor C69 is grounded, and the second terminals of capacitor C67 and capacitor C69 are connected to the first audio input terminal of audio power amplifier 14.

[0131] The first end of capacitor C61 is connected to the second output terminal of MCU module 12, the first end of capacitor C65 is grounded, and the second ends of capacitor C61 and capacitor C65 are connected to the second audio input terminal of audio power amplifier 14.

[0132] Figure 4 This is a schematic diagram of the fourth type of drive system for a car music seat provided in this disclosure embodiment, referring to... Figure 4 .

[0133] In one embodiment of this disclosure, the impedance matching module 15 includes: resistor R41, resistor R44, resistor R47, and capacitor C70.

[0134] Resistor R44 is connected to the power supply through resistor R41; resistor R44 is connected to resistor R47 through capacitor C70.

[0135] The first terminal of resistor R47 is used for grounding;

[0136] The first terminal of resistor R41 is connected to the turn-off control terminal of audio power amplifier 14;

[0137] The second end of resistor R47 is connected to the mute control terminal of audio power amplifier 14.

[0138] In one embodiment of this disclosure, the power filtering module 16 includes:

[0139] Capacitors C55, C56, C57, C58, C76, C77, and inductor L7;

[0140] The first terminal of capacitor C55 is connected to the first terminal of capacitor C56 and the positive terminal of capacitor C57, respectively; the first terminal of capacitor C55 is connected to the power supply through inductor L7.

[0141] The second terminal of capacitor C55 is connected to the second terminal of capacitor C56 and the negative terminal of capacitor C57 respectively. The second terminal of capacitor C57 is used for grounding.

[0142] The positive terminal of capacitor C58 is connected to the first terminal of capacitor C76 and the first terminal of capacitor C77, respectively.

[0143] The negative terminal of capacitor C58 is connected to the second terminal of capacitor C76 and the second terminal of capacitor C77, respectively.

[0144] The negative terminal of capacitor C58 is used for grounding.

[0145] In one embodiment of this disclosure, a drive system for an automotive music seat further includes: a filtering module;

[0146] The filtering module is connected to the output module 17 and the audio power amplifier 14 respectively;

[0147] The filtering module includes: inductors L8, L9, L10, L11, capacitor C66, and capacitor C71;

[0148] The first terminals of inductor L10 and inductor L11 are connected to the first audio output terminal of audio power amplifier 14.

[0149] The first terminals of inductor L8 and inductor L9 are both connected to the second audio output terminal of audio power amplifier 14.

[0150] The second terminals of inductors L10, L11, L8, and L9 are all used to output multi-channel audio drive signals.

[0151] In one embodiment of this disclosure, the output module 17 includes:

[0152] Capacitors C59, C63, C72, and C74; resistors R42, R43, R45, and R46; capacitors C60, C64, C73, and C75; diodes ESD3, ESD4, ESD5, and ESD6.

[0153] The first terminal of capacitor C59 is connected to the first terminal of resistor R42 and the first terminal of diode ESD3 respectively; the second terminal of capacitor C59 is used for grounding.

[0154] The first terminal of capacitor C63 is connected to the second terminal of capacitor C59; the second terminal of capacitor C63 is connected to the first terminal of resistor R43 and the first terminal of diode ESD4 respectively.

[0155] The second terminal of resistor R42 is connected to the second terminal of diode ESD3 through capacitor C60;

[0156] The second terminal of resistor R43 is connected to the second terminal of diode ESD4 through capacitor C64;

[0157] The second terminal of diode ESD3 is connected to the second terminal of diode ESD4;

[0158] The first terminal of capacitor C72 is connected to the first terminal of resistor R45 and the first terminal of diode ESD5; the second terminal of capacitor C72 is used for grounding.

[0159] The first terminal of capacitor C74 is connected to the second terminal of capacitor C72; the second terminal of capacitor C74 is connected to the first terminal of resistor R46 and the first terminal of diode ESD6 respectively.

[0160] The second terminal of resistor R45 is connected to the second terminal of diode ESD5 through capacitor C73;

[0161] The second terminal of resistor R46 is connected to the second terminal of diode ESD6 through capacitor C75;

[0162] The second terminal of diode ESD5 is connected to the second terminal of diode ESD6.

[0163] The first terminal of capacitor C59 is connected to inductor L8; capacitor C63 is connected to inductor L9; the first terminal of capacitor C72 is connected to inductor L10; and the first terminal of capacitor C74 is connected to inductor L11.

[0164] In this embodiment, capacitors C69 and C67 are used for AC coupling of the input signal, blocking the DC component while allowing the audio signal to pass through. Resistors R44 and R47, together with the input capacitors, form an input impedance matching network to ensure impedance continuity of the signal during transmission and reduce reflections.

[0165] The audio power amplifier 14 can be a TPA3118D2DAPR. The MUTE pin is used to control the amplifier's mute function. When the MUTE pin is pulled low, the output of the audio power amplifier 14 is muted. The MODSEL pin is used to select the operating mode of the audio power amplifier 14, such as stereo or bridged mode, which can affect the amplifier's output configuration.

[0166] Capacitors C55, C56, C57, C58, C76, and C77 are used for power supply decoupling to reduce the impact of power supply noise on the performance of the audio power amplifier 14.

[0167] The gain can be set by adjusting the values ​​of resistors R44 and R47. Resistors R44 and R47, together with input capacitors C61, C65, C67, and C69, determine the gain of the audio power amplifier 14.

[0168] Inductors L8, L9, L10, and L11, together with capacitors C62, C66, C68, and C71, constitute an output filter used to reduce electromagnetic interference at the output of the audio power amplifier 14.

[0169] Capacitors C59, C60, C63, C64, C72, C73, C74 and C75 are used to eliminate high-frequency noise on the output line.

[0170] Diodes ESD3, ESD4, ESD5, and ESD6 are used to protect the input and output of the audio power amplifier 14 from electrostatic discharge.

[0171] LOUT1+, LOUT1-, LOUT2+, LOUT2-, ROUT1+, ROUT1-, ROUT2+, and ROUT2- are the output terminals of the audio power amplifier 14, providing amplified audio drive signals. The output audio drive signals can drive the exciter to work, causing the seat to vibrate.

[0172] As can be seen from the above, this disclosure constructs two sets of AC coupling circuits using capacitors C67 and C69, and C61 and C65 respectively. These circuits block DC components while allowing audio signals to pass smoothly, ensuring the pure transmission of audio signals and avoiding interference from DC components. Resistors R44 and R47, together with the input capacitors, form an input impedance matching network, ensuring impedance continuity during signal transmission, reducing signal reflection, and improving the transmission efficiency and quality of audio signals. The introduction of decoupling capacitors C55, C56, C57, C58, C76, and C77 effectively reduces the impact of power supply noise on the performance of the audio power amplifier 14, ensuring that the audio power amplifier 14 operates in a stable power supply environment and improving the amplification quality and stability of the audio signal. Inductors L8, L9, L10, and L11, along with capacitors C66 and C71, constitute the output filter, effectively reducing electromagnetic interference at the output of the audio power amplifier 14, improving the purity and quality of the audio signal, and ensuring accurate transmission of the audio drive signal. The introduction of electrostatic protection diodes such as ESD3, ESD4, ESD5, and ESD6 effectively protects the input and output of the audio power amplifier 14 from the effects of electrostatic discharge, improving the reliability and stability of the car music seat drive.

[0173] Figure 5 This is a schematic diagram of the fifth type of drive system for a car music seat provided in this disclosure. Figure 6 This is a schematic diagram of the sixth type of drive system for a car music seat provided in this disclosure embodiment, referring to... Figure 5 and Figure 6 .

[0174] In one embodiment of this disclosure, a drive system for an automotive music seat further includes: a communication module 18;

[0175] Communication module 18 includes: a transceiver unit, a second power supply decoupling unit, and a connector unit;

[0176] The communication terminal of MCU module 12 is connected to the communication terminal of transceiver unit; the wake-up terminal of MCU module 12 is connected to the suppression output terminal of transceiver unit.

[0177] The MCU module 12 is connected to the test data input terminal of the connector unit;

[0178] The second power decoupling unit is connected to the power supply terminal of the transceiver unit.

[0179] In this embodiment, the transceiver unit includes: resistor R100, resistor R101, inductor L4, capacitor C90, capacitor C92, capacitor C93, crystal oscillator X1, inductor C29, resistor R101, resistor R102, capacitor C34, resistor R53, MOSFET Q5, capacitor C81, resistor R52, resistor R54, transceiver U3, resistor R99, resistor R30, resistor R33, MOSFET Q4, capacitor C37, resistor R36, resistor R35, diode ESD7, common mode choke L5, resistor R24, resistor R29, capacitor C31, bidirectional protection diode D1, capacitor C30, and capacitor C33;

[0180] The communication output terminal of MCU module 12 is connected to the communication input terminal of transceiver U3 through resistor R100; the communication input terminal of MCU module 12 is connected to the communication output terminal of transceiver U3 through resistor R101.

[0181] The first end of inductor L4 is used to connect to the power supply. The first end of inductor L4 is connected to both the digital power input terminal and the analog power input terminal of MCU module 12. The first end of inductor L4 is grounded through capacitor C90.

[0182] The second terminal of inductor L4 is grounded through capacitor C92. The first terminal of capacitor C92 is connected to the first reference signal terminal of MCU module 12, and the second terminal of capacitor C92 is connected to the second reference signal terminal of MCU module 12 and the ground terminal of MCU module 12 respectively.

[0183] The first terminal of crystal oscillator X1 is grounded through capacitor C93, and the second terminal of crystal oscillator X1 is grounded through capacitor C29.

[0184] The first terminal of resistor R101 is connected to the first terminal of crystal oscillator X1 and the first clock input terminal of MCU module 12 respectively; the second terminal of resistor R101 is connected to the second terminal of crystal oscillator X1 and the first terminal of resistor R102 respectively; the second terminal of resistor R102 is connected to the second clock input terminal of MCU module 12.

[0185] The second ground terminal of MCU module 12 is connected to the second digital power input terminal of MCU module 12 through capacitor C34; the first terminal of capacitor C34 is used for grounding, and the second terminal of capacitor C34 is used for connecting to the power supply.

[0186] The source of MOSFET Q5 is grounded, the drain of MOSFET Q5 is connected to the first terminal of resistor R53 and the wake-up terminal of MCU module 12, the gate of MOSFET Q5 is grounded through capacitor C81, and the second terminal of resistor R53 is connected to the power supply.

[0187] The gate of MOSFET Q5 is connected to the suppression output terminal of transceiver U3 through resistor R54, and the first terminal of resistor R54 is grounded through resistor R52.

[0188] The source of MOSFET Q4 is grounded, the drain of MOSFET Q4 is connected to the power supply through resistor R33, and the drain of MOSFET Q4 is connected to the adaptive terminal of MCU module 12; the gate of MOSFET Q4 is connected to the first terminal of capacitor C37, the first terminal of resistor R36, and the first terminal of resistor R35 respectively.

[0189] The second terminal of capacitor C37 is connected to the second terminal of resistor R36, and the second terminal of resistor R36 is used for grounding; resistor R35 is grounded through diode ESD7, and the first terminal of resistor R35 is used to connect to external devices.

[0190] The standby mode control input of transceiver U3 is grounded through resistor R99, and the local wake-up terminal of transceiver U3 is grounded through resistor R30.

[0191] The first differential output terminal of transceiver U3 is connected to the first terminal of common mode choke L5, and the second differential output terminal of transceiver U3 is connected to the second terminal of common mode choke L5.

[0192] The third terminal of the common mode choke L5 is connected to the first terminal of the capacitor C31 through resistor R29; the third terminal of the common mode choke L5 is connected to an external device; the third terminal of the common mode choke L5 is connected to the first terminal of the bidirectional protection diode D1 and the first terminal of the capacitor C33 respectively.

[0193] The fourth terminal of the common mode choke L5 is connected to the first terminal of the capacitor C31 through resistor R24; the fourth terminal of the common mode choke L5 is connected to an external device; the fourth terminal of the common mode choke L5 is connected to the second terminal of the bidirectional protection diode D1 and the first terminal of the capacitor C30 respectively.

[0194] The second terminals of capacitors C30 and C33 are used for grounding, the third terminal of the bidirectional protection diode is used for grounding, and the second terminal of the bidirectional protection diode D1 is connected to the output terminal of transceiver U3 through capacitor C31.

[0195] In this embodiment, the second power supply decoupling unit includes: capacitor C26, capacitor C27 and capacitor C38;

[0196] The first end of capacitor C26 is used to connect to the power supply, the second end of capacitor C26 is used to ground, and the first end of capacitor C26 is connected to the first power supply terminal of transceiver U3.

[0197] The first terminals of capacitors C27 and C28 are both used to connect to the power supply. The second terminals of capacitors C27 and C28 are both used to ground. The first terminals of capacitors C27 and C28 are both connected to the second power supply terminal of transceiver U3. The second power supply terminal of transceiver U3 is connected to the reference voltage terminal of transceiver U3. The second terminals of capacitors C27 and C28 are used to ground.

[0198] In this embodiment, the connector unit includes: connector H1 and resistor R55;

[0199] The output terminal of connector H1 is connected to the input terminal of MCU module 12. The ground terminal of connector H1 is used for grounding. The power supply terminal of connector H1 is connected to the output terminal of connector H1 through resistor R55.

[0200] In this embodiment, transceiver U3 is a transceiver used for signal conversion between the CAN bus and MCU module 12. It is responsible for converting the digital CAN signal from MCU module 12 into CANH / CANL differential signals, and converting the differential signal received on the bus back into a digital signal readable by MCU module 12.

[0201] MCU module 12 communicates with transceiver U3 via the CAN_TX and CAN_RX pins:

[0202] CAN_TX (U3Pin1): Connected to CAN_TXD (transmit pin) of MCU module 12. This pin transmits digital signals to transceiver U3. CAN_RX (U3Pin4): Connected to CAN_RXD (receive pin) of MCU module 12. This pin receives the converted digital signals from transceiver U3.

[0203] The CAN_TXD pin is connected to the TXD pin of transceiver U3 via resistor R100, serving as a signal current limiter and protection. The CAN_RXD pin is connected to the RXD pin of transceiver U3 via resistor R101, ensuring signal integrity.

[0204] The output pins CANH and CANL of transceiver U3 are connected to the CAN bus for communication with other CAN devices.

[0205] CANH (Pin 13) and CANL (Pin 12) filter common-mode noise through common-mode choke L5, enhancing signal stability. The bidirectional protection diode D1 (PESD1CAN) provides ESD protection, preventing damage to transceiver U3 from electrostatic discharge or voltage surges. Resistors R24 and R29, along with capacitor C31, form a matching circuit to optimize impedance matching of the CAN bus. Capacitors C30 and C33 perform high-frequency filtering.

[0206] CAN_EN (Pin8-EN): Enable state of MCU module 12 controlling transceiver U3. High level enables CAN communication, low level disables CAN function.

[0207] INH and WAKE functions:

[0208] INH signal (Pin6): Controls the wake-up signal of external devices via MOSFET Q5. WAKE pin (Pin7): Connects to external circuitry and supports wake-up functionality.

[0209] Power supply:

[0210] VCC (Pin 3): Power supply for transceiver U3, connected to +3.3V. PVDD and VDD (Pin 10, 15): Internal power supply pins, provided with stable power through filter capacitors C26, C27, and C28.

[0211] The transceiver U3 model can be TJA1043T,118, and the connector H1 model can be KH-1.27PH180-2X5P-L7.2-SMT.

[0212] As can be seen from the above, this disclosure achieves precise conversion between the digital CAN signal and the CANH / CANL differential signal of the MCU module 12 through the transceiver unit. This ensures the integrity and accuracy of the digital signal, while improving the efficiency and stability of communication. The introduction of the common-mode choke L5 effectively filters out common-mode noise on the CAN bus, further enhancing signal stability and anti-interference capability. The bidirectional protection diode D1 and the corresponding matching circuit provide comprehensive ESD protection and impedance matching optimization for the transceiver U3, effectively preventing damage to the circuit from electrostatic discharge and voltage surges, while optimizing the signal transmission quality of the bus.

[0213] The above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A drive system for a car music seat, characterized in that, include: Step-down module, analog-to-digital converter module, MCU module, signal coupling module, audio power amplifier, impedance matching module, power supply filtering module, and output module; The input terminal of the buck module is used to receive music amplifier signals, and the output terminal of the buck module is connected to the input terminal of the analog-to-digital converter module. The input terminal of the MCU module is connected to the output terminal of the analog-to-digital converter module; the output terminal of the MCU module is connected to the signal coupling module. The audio power amplifier is connected to the output terminal of the signal coupling module, the impedance matching module, the power filtering module, and the output module, respectively. The output module is used to output audio drive signals to drive the car music seat.

2. The drive system for an automotive music seat as described in claim 1, characterized in that, The music amplifier signal includes a first music amplifier signal and a second music amplifier signal. The step-down module includes: resistors R1, R2, R3, R4, R5, and R6; common mode choke EE1; common mode choke EE2; and sliding rheostat RP1 and RP2. The first end of resistor R1 and the second end of common mode choke EE1 are used to receive the first music amplifier signal, and the first end of resistor R4 and the second end of common mode choke EE2 are used to receive the second music amplifier signal. The second end of resistor R1 is connected to the first end of resistor R2 and the first end of common mode choke EE1 respectively; the second end of resistor R2 is connected to the second end of common mode choke EE1. The second end of resistor R4 is connected to the first end of resistor R5 and the first end of common mode choke EE2 respectively; the second end of resistor R5 is connected to the second end of common mode choke EE2. The first end of the sliding rheostat RP1 is connected to the third end of the common mode choke EE1; the second end of the sliding rheostat RP1 is connected to the fourth end of the common mode choke EE1, the third end of the common mode choke EE2, and the first end of the sliding rheostat RP2; the sliding end of the sliding rheostat RP1 is connected to the first end of the resistor R3, and the second end of the resistor R3 is the first output end of the step-down module. The first end of the sliding rheostat RP2 is used for grounding; the second end of the sliding rheostat RP2 is connected to the fourth end of the common mode choke EE2; the sliding end of the sliding rheostat RP2 is connected to the first end of the resistor R6, and the second end of the resistor R6 is the second output end of the step-down module.

3. The drive system for an automotive music seat as described in claim 1, characterized in that, The analog-to-digital conversion module includes: an audio encoding / decoding unit, a power supply decoupling unit, and a crystal oscillator unit; Both the power decoupling unit and the crystal oscillator unit are connected to the audio codec unit. The analog input terminal of the codec unit is the input terminal of the analog-to-digital converter module, and the output terminal of the audio codec unit is the output terminal of the analog-to-digital converter module.

4. The drive system for an automotive music seat as described in claim 3, characterized in that, The crystal oscillator unit includes: a crystal oscillator chip, capacitor C16, capacitor C20, resistor R19, and resistor R20; The first terminal of capacitor C16 is used for grounding, the second terminal of capacitor C16 is used for connection to the power supply, and the second terminal of capacitor C16 is connected to the power supply terminal of the crystal oscillator chip. The enable terminal of the crystal oscillator chip receives the enable crystal oscillator signal through resistor R19, and the enable terminal of the crystal oscillator chip is connected to the ground terminal of the crystal oscillator chip through resistor R20. The output terminal of the crystal oscillator chip is connected to the ground terminal of the crystal oscillator chip through capacitor C20; The output terminal of the crystal oscillator chip is connected to the clock input terminal of the audio codec unit.

5. A drive system for an automotive music seat as described in claim 1, characterized in that, The output terminals of the MCU module include a first output terminal and a second output terminal; The signal coupling module includes: capacitor C61, capacitor C65, capacitor C67 and capacitor C69; The first terminal of capacitor C67 is connected to the first output terminal of the MCU module, the first terminal of capacitor C69 is grounded, and the second terminals of capacitor C67 and capacitor C69 are connected to the first audio input terminal of the audio power amplifier. The first end of capacitor C61 is connected to the second output terminal of the MCU module, the first end of capacitor C65 is grounded, and the second ends of capacitor C61 and capacitor C65 are connected to the second audio input terminal of the audio power amplifier.

6. A drive system for an automotive music seat as described in claim 1, characterized in that, The impedance matching module includes: resistor R41, resistor R44, resistor R47 and capacitor C70; The resistor R44 is connected to the power supply through the resistor R41; the resistor R44 is connected to the resistor R47 through the capacitor C70; The first terminal of the resistor R47 is used for grounding; The first end of the resistor R41 is connected to the turn-off control terminal of the audio power amplifier; The second end of the resistor R47 is connected to the mute control terminal of the audio power amplifier.

7. A drive system for an automotive music seat as described in claim 1, characterized in that, The power filtering module includes: Capacitors C55, C56, C57, C58, C76, C77, and inductor L7; The first terminal of capacitor C55 is connected to the first terminal of capacitor C56 and the positive terminal of capacitor C57, respectively; the first terminal of capacitor C55 is connected to the power supply through inductor L7. The second terminal of capacitor C55 is connected to the second terminal of capacitor C56 and the negative terminal of capacitor C57, respectively, and the second terminal of capacitor C57 is used for grounding; The positive terminal of capacitor C58 is connected to the first terminal of capacitor C76 and the first terminal of capacitor C77, respectively. The negative terminal of capacitor C58 is connected to the second terminal of capacitor C76 and the second terminal of capacitor C77, respectively. The negative terminal of capacitor C58 is used for grounding.

8. A drive system for an automotive music seat as described in claim 1, characterized in that, Also includes: Filtering module; The filtering module is connected to the output module and the audio power amplifier, respectively. The filtering module includes: inductor L8, inductor L9, inductor L10, inductor L11, capacitor C66, and capacitor C71; The first end of inductor L10 and the first end of inductor L11 are connected to the first audio output terminal of the audio power amplifier. The first end of inductor L8 and the first end of inductor L9 are both connected to the second audio output terminal of the audio power amplifier; The second terminals of inductor L10, inductor L11, inductor L8, and inductor L9 are all used to output multi-channel audio drive signals.

9. A drive system for an automotive music seat as described in claim 8, characterized in that, The output module includes: Capacitors C59, C63, C72, and C74; resistors R42, R43, R45, and R46; capacitors C60, C64, C73, and C75; diodes ESD3, ESD4, ESD5, and ESD6. The first terminal of capacitor C59 is connected to the first terminal of resistor R42 and the first terminal of diode ESD3, respectively; the second terminal of capacitor C59 is used for grounding. The first terminal of capacitor C63 is connected to the second terminal of capacitor C59; the second terminal of capacitor C63 is connected to the first terminal of resistor R43 and the first terminal of diode ESD4, respectively. The second terminal of the resistor R42 is connected to the second terminal of the diode ESD3 through the capacitor C60; The second terminal of the resistor R43 is connected to the second terminal of the diode ESD4 through the capacitor C64; The second terminal of diode ESD3 is connected to the second terminal of diode ESD4; The first terminal of capacitor C72 is connected to the first terminal of resistor R45 and the first terminal of diode ESD5, respectively; the second terminal of capacitor C72 is used for grounding. The first terminal of capacitor C74 is connected to the second terminal of capacitor C72; the second terminal of capacitor C74 is connected to the first terminal of resistor R46 and the first terminal of diode ESD6 respectively. The second terminal of the resistor R45 is connected to the second terminal of the diode ESD5 through the capacitor C73; The second terminal of the resistor R46 is connected to the second terminal of the diode ESD6 through the capacitor C75; The second terminal of diode ESD5 is connected to the second terminal of diode ESD6; The first terminal of capacitor C59 is connected to inductor L8; capacitor C63 is connected to inductor L9; the first terminal of capacitor C72 is connected to inductor L10; and the first terminal of capacitor C74 is connected to inductor L11.

10. A drive system for an automotive music seat as described in claim 1, characterized in that, Also includes: Communication module; The communication module includes: a transceiver unit, a second power decoupling unit, and a connector unit; The communication terminal of the MCU module is connected to the communication terminal of the transceiver unit; the wake-up terminal of the MCU module is connected to the suppression output terminal of the transceiver unit. The MCU module is connected to the test data input terminal of the connector unit; The second power decoupling unit is connected to the power supply terminal of the transceiver unit.

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