Vehicle headlight control system

Abstract

The application discloses a vehicle lamp control system, and relates to the technical field of vehicle lighting, which comprises a communication circuit, a control circuit and a first vehicle lamp configuration data storage space. The communication circuit outputs a vehicle lamp configuration signal in response to a vehicle lamp control instruction output by an external device. The control circuit is electrically connected with the communication circuit. The control circuit updates the first vehicle lamp configuration data in the storage space to second vehicle lamp configuration data in response to the vehicle lamp configuration signal. The control circuit controls the vehicle lamp and the audio to work synchronously in response to a vehicle lamp control signal output by the communication circuit.

Description

Technical Field

[0001] This invention relates to the field of vehicle lighting technology, and more specifically, to a vehicle lighting control system. Background Technology

[0002] In related technologies, electric vehicle lights are mainly used for basic lighting and simple decoration, achieving their illumination function through fixed lighting patterns. These lights typically employ a single control method, resulting in fixed lighting effects that cannot be dynamically adjusted based on driving conditions or user needs. While some existing intelligent vehicle lights possess certain control functions, they suffer from the following problems: First, their functionality is limited, lacking linkage with vehicle driving signals and unable to display safety warning lights such as those for braking and steering; second, their control methods are limited, failing to achieve wireless control and music-linked entertainment functions; third, their optical effects are poor, exhibiting astigmatism and glare, affecting the visibility of oncoming vehicles and pedestrians; and fourth, their display effects are poor, with blurry pixels, unclear pattern edges, and motion blur in animations, failing to meet high-quality display requirements. Therefore, a new technical solution is needed to address these technical problems. Summary of the Invention

[0003] One objective of this invention is to provide a new technical solution for a vehicle lighting control system.

[0004] According to the present invention, a vehicle lighting control system is provided, the system comprising: A communication circuit that, in response to a vehicle light control command output by an external device, outputs a vehicle light configuration signal. A control circuit, which is electrically connected to the communication circuit, updates the first vehicle light configuration data in the storage space configured by the control circuit to the second vehicle light configuration data in response to the vehicle light configuration signal. The control circuit responds to the headlight control signal output by the communication circuit, and controls the vehicle's headlights and audio system to work synchronously.

[0005] Optionally, the control circuit includes a control chip U4, a starting device, and a communication device, wherein the starting device and the communication device are electrically connected to the control chip U4 respectively; The starting device includes resistors R25, R26, and R28, and transistor Q6. The first end of resistor R25 is electrically connected to the control chip U4. The collector of transistor Q6 is electrically connected to the second end of resistor R25. The base of transistor Q6 is electrically connected to the first end of resistor R26 and the first end of resistor R28. The connection point between the second end of resistor R28 and the emitter of transistor Q6 is grounded. The second end of resistor R26 is connected to the first power supply terminal of the system. The communication device includes resistors R11, R12, R13, R14, R15, R16, R17, and R18, a transistor Q2, a capacitor C22, a control chip U5, diodes TVS1 and TVS2. The first end of resistor R14 is electrically connected to the control circuit. The connection point between the second end of resistor R14 and the first end of resistor R12 is electrically connected to the control chip U5. The second end of resistor R12 is connected to the second power supply terminal of the system. The first end of resistor R15 is also connected to the second power supply terminal of the system. The connection point between the second end of resistor R15 and the control chip U5 is electrically connected to the collector of transistor Q2. The emitter of transistor Q2 is grounded. The base of transistor Q2 is electrically connected to the first end of resistor R18. The connection point between the second end of resistor R18 and the first end of resistor R19 is electrically connected to the control chip U5. The control circuit is electrically connected as follows: the second end of resistor R19 is connected to the second power supply terminal of the system; the connection point between the first end of capacitor C22 and the first power supply terminal of the system is electrically connected to the control chip U5; the second end of capacitor C22 is grounded; the connection point between the control chip U5 and the first end of resistor R13 is sequentially connected to the first end of resistor R11 and the first end of diode TVS1; the second ends of resistor R11 and diode TVS1 are both grounded; the second end of resistor R13 is connected to the first differential interface of the system; the connection point between the control chip U5 and the first end of resistor R16 is sequentially connected to the first end of resistor R17 and the first end of diode TVS2; the second end of resistor R17 is connected to the first power supply terminal of the system; the second end of diode TVS1 is grounded; and the second end of resistor R16 is connected to the second differential interface of the system.

[0006] Optionally, the control circuit further includes a control chip U12, resistors R31, R32, R35, R36, R37, R38, R39, capacitors C44 and C45; resistor R31 is connected between the control chip U4 and the control chip U12, resistor R32 is connected between the control chip U4 and the control chip U12, the connection point between the first terminal of capacitor C44 and the second power supply terminal of the system is electrically connected to the control chip U12, the second terminal of capacitor C44 is grounded, and resistor R31 is connected to the control chip U12. 5 is connected between the control chip U4 and the control chip U12. Resistor R36 is connected between the control chip U4 and the control chip U12. The first ends of resistors R37, R38, and R39 are all electrically connected to the second power supply terminal of the system. The second ends of resistors R37, R38, and R39 are respectively electrically connected to the control chip U12. The first end of capacitor C45 is grounded, and the second end of capacitor C45 is electrically connected to the control chip U12.

[0007] Optionally, the control circuit further includes an electric lock device; the electric lock device includes resistors R29, R33, R41, R42, and R43, diode DZ3, capacitor C63, transistors Q4 and Q5, and a switching transistor Q7. The emitter of the switching transistor Q4 is electrically connected to the third power supply terminal of the system, and the collector of the switching transistor Q4 is electrically connected to the fourth power supply terminal of the system. Diode DZ3 is connected across the third power supply terminal of the system and the first terminal of resistor R41. Capacitor C63 is connected across the third power supply terminal of the system and the first terminal of resistor R41. The connection point of resistor R33 and the second terminal of the switching transistor Q7 is electrically connected to the emitter of transistor Q4. The connection points of the first terminal of the switching transistor Q7 and the first terminal of the resistor R41 are electrically connected to the base of the transistor Q4. The third terminal of the switching transistor Q7 is electrically connected to the fourth power supply terminal of the system. The second terminal of the resistor R41 is electrically connected to the collector of the transistor Q5. The first terminal of the resistor R29 is electrically connected to the fourth power supply terminal of the system. The second terminal of the resistor R29 is electrically connected to the emitter of the transistor Q5. The base of the transistor Q5 and the first terminal of the resistor R43 are electrically connected to the first terminal of the resistor R42. The connection point of the second terminal of the resistor R43 and the emitter of the transistor Q5 is grounded. The second terminal of the resistor R42 is electrically connected to the control chip U4.

[0008] Optionally, the system further includes a power supply device, which includes an inductor L6, diodes D1, D2, and D3, a control chip U10, a control chip U2, capacitors EC7, EC3, EC8, C42, and C43, a resistor R4, a capacitor C9, and a capacitor C10. The cathode of diode D1 is electrically connected to the positive voltage terminal of the system's power supply, and the anode of diode D1 is electrically connected to the third power supply terminal of the system. The control chip U10 is electrically connected to the system's power supply terminal, the first terminal of capacitor EC7, the first terminal of capacitor C43, the second terminal of capacitor C43, the cathode of diode D3, the first terminal of capacitor C42, and the cathode of diode D2. The second terminal of capacitor EC7, the second terminal of diode D3, the first terminal of capacitor C42, and the cathode of diode D2 are also electrically connected. The anode of diode D3, the first terminal of capacitor EC8, and the first terminal of resistor R4 are all grounded. The second terminal of capacitor C43 is electrically connected to the first terminal of inductor L6. The connection point of the second terminal of inductor L6, the anode of diode D2, the second terminal of capacitor EC8, and the second terminal of resistor R4 is connected to the first power supply terminal of the system. Control chip U2 is electrically connected to the first power supply terminal and the second power supply terminal of the system respectively. The first terminal of capacitor C10 is electrically connected to control chip U2, and the second terminal of capacitor C10 is grounded. The first terminal of capacitor C9 is electrically connected to control chip U2, and the second terminal of capacitor C9 is grounded. The first terminal of capacitor EC3 is electrically connected to the second power supply terminal of the system, and the second terminal of capacitor EC3 is grounded.

[0009] Optionally, the power supply device further includes a diode TVS3, an interface Q1, a diode DZ1, resistors R1, R2, R3, R5, R6, and R34, capacitors C1, C3, C4, C41, C47, C48, C50, C51, and C52, and a control chip U1. The first terminal of the diode TVS3 is grounded. The connection point between the diode TVS3 and the fifth power supply terminal of the system is connected to the interface Q1. The interface Q1 and the resistor R2 are both connected across the interface. The first terminal of the resistor R6 is electrically connected to the resistor R2. The connection point between the second terminal of the resistor R6, the first terminal of the capacitor C47, and the first terminal of the capacitor C48 is grounded. The second terminals of the capacitors C47 and C48 are electrically connected to the control chip U1. The resistor R34 is electrically connected to the control chip U1. The first terminal of capacitor C4 is electrically connected to the control chip U1, and the second terminal of capacitor C4 is grounded. Capacitor C1 is electrically connected to the control chip U1. The first terminal of inductor L1 is electrically connected to the control chip U1, and the second terminal of inductor L1 is electrically connected to the first power supply terminal of the system. The first terminal of capacitor C3 is electrically connected to the control chip U1, and the second terminal of capacitor C3 is grounded. The first terminals of resistors R1, R3, and R5 are electrically connected to the control chip U1. The second terminal of resistor R1 is electrically connected to the first terminal of capacitor C2. The connection point between the second terminal of capacitor C2 and the second terminal of resistor R3 is electrically connected to the first power supply terminal of the system. The second terminal of resistor R5 is grounded. Capacitors C41, C50, C51, and C52 are connected across the second terminal of capacitor C2 and the second terminal of resistor R5.

[0010] Optionally, the power supply device further includes capacitors EC1, C5, C6, C7, C8, C11, C12, C57, C58, C59, C60, and C61; resistors R27, R30, R61, R63, R64, R65, R66, R67, R68, R69, R70, R71, and R72; inductors L2 and L7; diodes D4 and DZ2; switching transistor Q3; control chip U3; control chip U13; and interface Q8.The first terminals of capacitor EC1 and C57 are electrically connected to the positive voltage terminal of the system power supply. The second terminals of capacitor EC1 and C57 are grounded. Resistor R63 is connected between the positive voltage terminal of the system power supply and the control chip U13. The cathode of diode D4, the first terminal of capacitor C58, and the cathode of diode DZ2 are electrically connected to resistor R63. The second terminal of capacitor C58, the anode of diode DZ2, and the first terminal of capacitor C59 are electrically connected to the negative voltage terminal of the system power supply. The second terminal of capacitor C59 is electrically connected to the control chip U13. The anode of diode D4 is connected to resistor R63. The first terminal of resistor R69 is electrically connected to the control chip U13. Resistors R70 and R71 are both connected between the control chip U13 and the negative voltage terminal of the system power supply. Resistors R65, R66, and R67 are all connected between the control chip U13 and the first terminal of inductor L7. The first terminal of inductor L7 is electrically connected to the negative voltage terminal of the system power supply. The connection point between the second terminal of inductor L7 and the first terminal of resistor R69 is connected to interface Q8. The first terminals of capacitors C60 and C61, and the first terminal of resistor R68 are all electrically connected to the second terminal of inductor L7. The second terminals of capacitor C60, capacitor C61, and resistor R68 are all grounded. Resistor R64 is connected between interface Q8 and the first power supply terminal of the system. The first terminal of resistor R27 is electrically connected to interface Q8. The second terminal of resistor R27 is electrically connected to the collector of transistor Q3. The connection point between the base of transistor Q3 and the first terminal of resistor R30 is electrically connected to the first terminal of resistor R61. The second terminal of resistor R30 is electrically connected to the control circuit. The connection point between resistor R1 and the emitter of transistor Q3 is grounded. The first terminals of capacitors C5, C6, and C7 are grounded. All terminals are electrically connected to interface Q8. The second terminals of capacitors C5, C6, and C7 are all grounded. The first terminal of inductor L2 is electrically connected to interface Q8, and the second terminal of inductor L2 is electrically connected to the sixth power supply terminal of the system. The first terminal of capacitor C8 is electrically connected to the sixth power supply terminal of the system, and the second terminal of capacitor C8 is grounded. The connection point between the first terminal of capacitor C11 and control chip U3 is electrically connected to the seventh power supply terminal of the system, and the second terminal of capacitor C11 is grounded. The connection point between the first terminal of capacitor C12 and control chip U3 is electrically connected to the seventh power supply terminal of the system, and the second terminal of capacitor C12 is grounded.

[0011] Optionally, the communication circuit includes a control chip U7, capacitors C25, C31, C32, C33, C34, C35, and C37, a control chip X2, a resistor R24, an inductor L4, and an inductor L5. The first terminal of capacitor C25 is electrically connected to the control chip U7, and the second terminal of capacitor C25 is grounded. The first terminal of capacitor C31 is electrically connected to the control chip U7, and the second terminal of capacitor C31 is grounded. The first terminal of capacitor C32 is electrically connected to the control chip U7, and the second terminal of capacitor C32 is grounded. The connection point between the first terminal of capacitor C33 and the control chip U7 is electrically connected to the control chip X2, and the second terminal of capacitor C33 is grounded. The connection point of the control chip X2 is grounded; the first terminal of the capacitor C34 and the connection point of the control chip X2 are grounded; the second terminal of the capacitor C34 and the connection point of the control chip X2 are electrically connected to the control chip U7; the capacitor C35 is electrically connected to the control chip U7; the second terminal of the capacitor C35 is grounded; the first terminal of the inductor L4 is electrically connected to the control chip U7; the second terminal of the inductor L4 is grounded; the first terminal of the resistor R24 ​​is electrically connected to the first terminal of the inductor L4; the connection point of the second terminal of the resistor R24 ​​and the first terminal of the inductor L5 is electrically connected to the first terminal of the capacitor C37; the connection point of the second terminal of the inductor L5 and the second terminal of the capacitor C37 is grounded.

[0012] Optionally, the system further includes an audio conversion circuit that performs digital-to-analog conversion processing on the output signal of the audio device. The audio conversion circuit includes resistors R20, R21, R22, and R23; capacitors C26, C27, C28, C30, C36, C38, C39, C40; capacitor EC2; capacitor EC4; capacitor EC5; and a control chip U6. The first end of resistor R62 is electrically connected to the communication circuit. The connection point between the first ends of resistor R62 and R20 is electrically connected to the control chip U6. Capacitor C29 is electrically connected to the control chip U6. The first ends of capacitors C30, EC2, and EC5 are all electrically connected to the control chip U6. The second ends of capacitors C30, EC2, and EC5 are grounded. The first end of capacitor C3 is grounded. The second terminal is electrically connected to the first terminal of resistor R22. The second terminal of resistor R22 is electrically connected to the control chip U6. The first terminal of capacitor C38 is electrically connected to the communication circuit. The second terminal of capacitor C38 is electrically connected to the first terminal of capacitor C39. The second terminal of capacitor C39 is electrically connected to the first terminal of resistor R23. The second terminal of resistor R23 is electrically connected to the control chip U6. The first terminal of capacitor C40 is electrically connected to the communication circuit. The second terminal of capacitor C40 is electrically connected to the first terminal of capacitor C39. The connection point between the first terminal of capacitor C26 and the first terminal of resistor R21 is electrically connected to the control chip U6. The second terminal of capacitor C27 is grounded. The first terminals of capacitor C27, C28, and EC4 are all grounded. The second terminals of capacitor C27, C28, and EC4 are all electrically connected to the control chip U6.

[0013] Optionally, the audio system further includes a conditioning circuit for conditioning the output signal of the audio system. The conditioning circuit includes operational amplifiers U14A and U14B, resistors R53, R54, R56, R57, R58, R59, and R60, and capacitors C54 and C55. The first terminal of resistor R56 is grounded. The connection point between the second terminal of resistor R56 and the first terminal of resistor R53 is electrically connected to the inverting input terminal of operational amplifier U14A. The first terminal of capacitor C54 is electrically connected to the audio input terminal of the system. The connection point between the second terminal of capacitor C54 and the first terminal of resistor R60 is electrically connected to the non-inverting input terminal of operational amplifier U14A. The second terminal of resistor R60 is grounded. The connection point between the second end of resistor R53 and the output terminal of operational amplifier U14A is electrically connected to the first end of resistor R58. The connection point between the second end of resistor R58 and the first end of resistor R59 is electrically connected to the non-inverting input terminal of operational amplifier U14B. The second end of resistor R59 is grounded. The first end of resistor R55 is grounded. The connection point between the second end of resistor R55 and the first end of resistor R54 is electrically connected to the inverting input terminal of operational amplifier U14B. The connection point between the second end of resistor R54 and the output terminal of operational amplifier U14B is electrically connected to the first end of resistor R57. Resistor R57 and the first end of capacitor C55 are electrically connected to the audio output terminal of the system. The second end of capacitor C55 is grounded.

[0014] One technical advantage of this invention is that the vehicle lighting control system provided by this invention can receive instructions from external devices through a communication circuit, and the control circuit updates the vehicle lighting configuration data in the storage space according to the instructions. This allows for flexible customization and upgrades of the vehicle lighting display effects, greatly enriching the personalized expression of the vehicle. Simultaneously, by controlling the synchronized operation of the vehicle lights and audio system through the control circuit, audiovisual effects such as music rhythm can be achieved, enhancing the vehicle's entertainment and interactive experience.

[0015] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0017] Figure 1 This is a circuit diagram of a vehicle lighting control system according to an embodiment of this application.

[0018] Figure 2This is a circuit diagram of a vehicle lighting control system according to another embodiment of this application.

[0019] Figure 3 This is a circuit diagram of a vehicle lighting control system according to another embodiment of this application.

[0020] Figure 4 This is a circuit diagram of a vehicle lighting control system according to another embodiment of this application.

[0021] Figure 5 This is a circuit diagram of a vehicle lighting control system according to another embodiment of this application.

[0022] Figure 6 This is a circuit diagram of a vehicle lighting control system according to another embodiment of this application.

[0023] Figure 7 This is a circuit diagram of a vehicle lighting control system according to another embodiment of this application.

[0024] Figure 8 This is a circuit diagram of a vehicle lighting control system according to another embodiment of this application.

[0025] Figure 9 This is a circuit diagram of a vehicle lighting control system according to another embodiment of this application. Detailed Implementation

[0026] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention.

[0027] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0028] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0029] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0031] This embodiment provides a vehicle lighting control system, such as... Figures 1 to 9 As shown, the system includes a communication circuit and a control circuit. The vehicle lighting control system of this embodiment can receive instructions from external devices, update vehicle lighting configuration data, and achieve synchronized operation of the vehicle lights and audio system.

[0032] Specifically, the system includes a communication circuit and a control circuit. The communication circuit, in response to a headlight control command from an external device, outputs a headlight configuration signal. The control circuit is electrically connected to the communication circuit, and in response to the headlight configuration signal, updates the first headlight configuration data in its storage space to second headlight configuration data. Furthermore, in response to the headlight control signal output by the communication circuit, the control circuit controls the vehicle's headlights and audio system to operate synchronously.

[0033] In this embodiment, the external device can be a smartphone, tablet, or a dedicated remote control. Users can generate headlight control commands by running a specific application (APP) on these devices, such as changing the light show pattern, adjusting dynamic effects, or selecting a music rhythm mode. Upon receiving the command, the communication circuit, such as a Bluetooth circuit or a Wi-Fi circuit, will parse it and convert it into a headlight configuration signal that the control circuit can recognize.

[0034] The control circuit is the core of the entire system, and can be, for example, an STM32 series microcontroller. The control circuit has internal or external storage (such as SPI Flash). Initially, this storage space contains default vehicle light configuration data, i.e., the first vehicle light configuration data, such as the default boot animation or static lighting mode. When the control circuit receives a vehicle light configuration signal, it updates the data in the storage space according to the information in the signal (such as new pattern data and effect parameters), modifying it to the second vehicle light configuration data. In this way, even if the system is powered off, the new configuration will not be lost, and the updated lighting effect will be automatically loaded the next time power is restored.

[0035] For example, the control circuit includes a control chip U4, a startup device, and a communication device. The startup device and the communication device are electrically connected to the control chip U4. The startup device ensures that the control chip U4 can start stably and reliably when powered on. The communication device constitutes the physical layer interface between the control circuit and an external source (such as an RS485 bus). Specifically, the startup device includes resistors R25, R26, and R28, and a transistor Q6. The first end of resistor R25 is electrically connected to the control chip U4. The collector of transistor Q6 is electrically connected to the second end of resistor R25. The base of transistor Q6 is electrically connected to the first end of resistor R26 and the first end of resistor R28. The connection point between the second end of resistor R28 and the emitter of transistor Q6 is grounded. The second end of resistor R26 is connected to the first power supply terminal of the system. This startup circuit configures the BOOT pin level of the control chip U4 by controlling the on / off state of transistor Q6, thereby selecting whether to boot from user Flash, system memory, or SRAM, enhancing the system's debugging and upgrade flexibility.

[0036] For example, the communication device includes resistors R11, R12, R13, R14, R15, R16, R17, and R18, transistor Q2, capacitor C22, control chip U5, diodes TVS1 and TVS2. This communication device constitutes an RS485 wired communication circuit. The first end of resistor R14 is electrically connected to the control circuit. The connection point between the second end of resistor R14 and the first end of resistor R12 is electrically connected to the control chip U5. The second end of resistor R12 is connected to the second power supply terminal of the system. The first end of resistor R15 is connected to the second power supply terminal of the system. The connection point between the second end of resistor R15 and the control chip U5 is electrically connected to the collector of transistor Q2. The emitter of transistor Q2 is grounded. The base of transistor Q2 is electrically connected to the first end of resistor R18. The connection point between the second end of resistor R18 and the first end of resistor R19 is electrically connected to the control circuit. The second end of resistor R19 is connected to the second power supply terminal of the system. The first end of capacitor C22 is connected to the system... The connection point of the first power supply terminal is electrically connected to the control chip U5. The second terminal of the capacitor C22 is grounded. The connection point of the control chip U5 and the first terminal of the resistor R13 is sequentially electrically connected to the first terminal of the resistor R11 and the first terminal of the diode TVS1. The second terminals of the resistor R11 and the second terminals of the diode TVS1 are both grounded. The second terminal of the resistor R13 is connected to the first differential interface of the system. The connection point of the control chip U5 and the first terminal of the resistor R16 is sequentially electrically connected to the first terminal of the resistor R17 and the first terminal of the diode TVS2. The second terminal of the resistor R17 is connected to the first power supply terminal of the system. The second terminal of the diode TVS1 is grounded. The second terminal of the resistor R16 is connected to the second differential interface of the system. In these examples, by using RS485 differential communication, long-distance, interference-resistant wired communication can be achieved to receive commands from the vehicle controller (such as brake and steering signals) or the central control screen. At the same time, the TVS tube and resistor network provide bus protection and impedance matching, ensuring the stability of communication in the vehicle environment.

[0037] For example, the control circuit also includes a control chip U12, resistors R31, R32, R35, R36, R37, R38, and R39, and capacitors C44 and C45. This part of the circuit constitutes an SPI Flash storage circuit, serving as the storage space for the control circuit. Resistor R31 is connected between control chip U4 and control chip U12. Resistor R32 is connected between control chip U4 and control chip U12. The connection point between the first end of capacitor C44 and the second power supply terminal of the system is electrically connected to control chip U12. The second end of capacitor C44 is grounded. Resistor R35 is connected between control chip U4 and control chip U12. Resistor R36 is connected between control chip U4 and control chip U12. The first ends of resistors R37, R38, and R39 are all electrically connected to the second power supply terminal of the system. The second ends of resistors R37, R38, and R39 are respectively electrically connected to control chip U12. The first end of capacitor C45 is grounded. The second end of capacitor C45 is electrically connected to control chip U12. In these examples, the Flash chip is connected via the SPI bus, which allows the vehicle lighting configuration data (such as patterns and animations) to be saved after power failure, enabling offline storage and loading of user-defined lighting effects.

[0038] For example, the control circuit further includes an electric lock device. This electric lock device is used to control the on / off state of the vehicle's power supply. The electric lock device includes resistors R29, R33, R41, R42, and R43, diode DZ3, capacitor C63, transistors Q4 and Q5, and a switching transistor Q7. The emitter of the switching transistor Q4 is electrically connected to the third power supply terminal of the system, and the collector of the switching transistor Q4 is electrically connected to the fourth power supply terminal of the system. Diode DZ3 is connected across the third power supply terminal of the system and the first terminal of resistor R41. Capacitor C63 is connected across the third power supply terminal of the system and the first terminal of resistor R41. The connection point of resistor R33 and the second terminal of the switching transistor Q7 is electrically connected to the emitter of transistor Q4. The connection point between the first end of resistor R7 and the first end of resistor R41 is electrically connected to the base of transistor Q4. The third end of switching transistor Q7 is electrically connected to the fourth power supply terminal of the system. The second end of resistor R41 is electrically connected to the collector of transistor Q5. The first end of resistor R29 is electrically connected to the fourth power supply terminal of the system. The second end of resistor R29 is electrically connected to the emitter of transistor Q5. The base of transistor Q5 and the first end of resistor R43 are electrically connected to the first end of resistor R42. The connection point between the second end of resistor R43 and the emitter of transistor Q5 is grounded. The second end of resistor R42 is electrically connected to the control chip U4. In these examples, the signal emitted by control chip U4 controls transistor Q5, thereby driving the switching transistor Q7 to turn on and off, realizing electronic switching control of 48V or 60V high-voltage power supply. Compared with traditional mechanical switches, it has a longer lifespan, faster response, and can be automatically controlled by the system, for example, automatically cutting off power after a long period of inactivity to save energy.

[0039] Exemplarily, the system also includes a power supply device for providing a stable and reliable low-voltage power supply to the entire system. This power supply device includes a first-stage high-voltage DC-DC step-down circuit and a second-stage low-voltage LDO regulator circuit. Specifically, the power supply device includes inductor L6, diodes D1, D2, and D3, control chip U10, control chip U2, capacitors EC7, EC3, EC8, C42, and C43, resistor R4, capacitor C9, and capacitor C10. High-voltage DC-DC section: The cathode of diode D1 is electrically connected to the positive voltage terminal of the system power supply, and the anode of diode D1 is electrically connected to the third power supply terminal of the system. The control chip U10 is electrically connected to the power supply voltage terminal of the system, the first terminal of capacitor EC7, the first terminal of capacitor C43, the second terminal of capacitor C43, the cathode of diode D3, the first terminal of capacitor C42, and the cathode of diode D2. The second terminal of capacitor EC7, the anode of diode D3, the first terminal of capacitor EC8, and the first terminal of resistor R4 are all grounded. The second terminal of capacitor C43 is electrically connected to the first terminal of inductor L6. The connection point of the second terminal of inductor L6, the anode of diode D2, the second terminal of capacitor EC8, and the second terminal of resistor R4 is connected to the first power supply terminal of the system. Low-voltage LDO section: The control chip U2 is electrically connected to both the first and second power supply terminals of the system. The first terminal of capacitor C10 is electrically connected to the control chip U2, and the second terminal of capacitor C10 is grounded. The first terminal of capacitor C9 is electrically connected to the control chip U2, and the second terminal of capacitor C9 is grounded. The first terminal of capacitor EC3 is electrically connected to the second power supply terminal of the system, and the second terminal of capacitor EC3 is grounded. This power supply device first efficiently converts the 48V or 12V high-voltage vehicle power to 5V through the DC-DC chip U10 to power peripherals such as LED light drivers and RS485. Then, the LDO chip U2 converts the 5V to a lower-ripple 3.3V specifically to power digital core chips such as MCU, Bluetooth, and Flash. This hierarchical power supply method balances the conversion efficiency under high voltage differential and the power purity requirements of low-voltage digital circuits.

[0040] Exemplarily, the power supply device further includes an input protection and filtering network. Specifically, the power supply device also includes diode TVS3, interface Q1, diode DZ1, resistors R1, R2, R3, R5, R6, and R34, capacitors C1, C3, C4, C41, C47, C48, C50, C51, and C52, and a control chip U1. The control chip U1 can be a 12V to 5V DC-DC circuit. The first terminal of the diode TVS3 is grounded. The connection point between the diode TVS3 and the fifth power supply terminal of the system is connected to the interface Q1. The interface Q1 and the resistor R2 are both connected across the interface. The first terminal of the resistor R6 is electrically connected to the resistor R2. The connection point between the second terminal of the resistor R6, the first terminal of the capacitor C47, and the first terminal of the capacitor C48 is grounded. The second terminals of the capacitor C47 and C48 are electrically connected to the control chip U1. The resistor R34 is electrically connected to the control chip U1. The first terminal of the capacitor C4 is electrically connected to the control chip U1. The second terminal of the capacitor C4 is grounded. The capacitor C1 is electrically connected to the control chip U1. The first terminal of the inductor L1... The system is electrically connected to the control chip U1. The second terminal of inductor L1 is electrically connected to the first power supply terminal of the system. The first terminal of capacitor C3 is electrically connected to the control chip U1, and the second terminal of capacitor C3 is grounded. The first terminals of resistors R1, R3, and R5 are electrically connected to the control chip U1. The second terminal of resistor R1 is electrically connected to the first terminal of capacitor C2. The connection point between the second terminal of capacitor C2 and the second terminal of resistor R3 is electrically connected to the first power supply terminal of the system. The second terminal of resistor R5 is grounded. Capacitors C41, C50, C51, and C52 are connected across the second terminal of capacitor C2 and the second terminal of resistor R5. In this example, by setting a TVS diode, a reverse connection protection diode, and an LC filter network at the power input terminal, surges, spikes, and high-frequency noise on the vehicle power line can be effectively absorbed, protecting the subsequent circuits from damage and improving the electromagnetic compatibility of the entire system.

[0041] For example, the power supply device further includes a boost or negative voltage circuit for powering the audio amplifier. For instance, the power supply device also includes capacitors EC1, C5, C6, C7, C8, C11, C12, C57, C58, C59, C60, and C61; resistors R27, R30, R61, R63, R64, R65, R66, R67, R68, R69, R70, R71, and R72; inductors L2 and L7; diodes D4 and DZ2; a switching transistor Q3; control chip U3; control chip U13; and interface Q8. This part of the circuit can be a set of DC-DC converters to generate the voltage required by the audio amplifier. For example, a negative voltage can be generated by the control chip U13 and peripheral components, or a higher voltage can be generated by the control chip U3 to meet the power requirements when the audio is playing, ensuring that the volume is sufficient and the sound quality is clear.

[0042] In this embodiment, the vehicle's lighting control system operates collaboratively across four functional levels: power management, core control, dual-mode communication, and execution and perception. The system uses a control chip U4 (e.g., an STM32 series 32-bit microcontroller) as its core, converting the vehicle's high-voltage power supply to a stable low-voltage power supply via a power supply device. Responding to control commands from the communication circuit, it drives the LED dot matrix lights to perform corresponding display effects and can selectively drive the audio system to work synchronously.

[0043] First, when the system is powered on, the vehicle's battery provides a DC input voltage of 48V, 60V, or 12V. This input voltage is processed by the power supply unit.

[0044] Specifically, diode D1 in the power supply unit constitutes a reverse connection protection circuit. When the positive and negative terminals of the power supply are correctly connected, diode D1 conducts in the forward direction, sending the input voltage to the subsequent DC-DC step-down circuit. At the same time, transient suppression diode TVS3 and Zener diode DZ1 clamp the input voltage, absorbing surge voltage and electrostatic spikes in the circuit to prevent damage to subsequent components due to overvoltage.

[0045] After being protected, the high-voltage DC power first enters the first-stage DC-DC step-down circuit. Referring to the circuit shown, the control chip U10 and its peripheral components, such as inductor L6, capacitor EC7, and EC8, constitute a synchronous step-down converter, efficiently converting the 48V or 12V input voltage into a +5V DC voltage. This +5V voltage serves as the system's first power supply, primarily used to power peripherals such as the LED driver, RS485 communication circuit, and audio amplifier.

[0046] Subsequently, the +5V voltage is fed into the second-stage LDO low-dropout linear regulator circuit. The control chip U2 and its peripheral components, including capacitors C9, C10, and EC3, constitute the low-dropout linear regulator, further converting the +5V voltage into a +3.3V DC voltage with lower ripple and noise. This +3.3V voltage serves as the system's second power supply, specifically used to power the control chip U4, the Bluetooth chip in the communication circuit, and the SPI Flash memory chip—digital core circuits with high power accuracy requirements—ensuring their stable operation.

[0047] Once the +3.3V output voltage from the power supply stabilizes, the control chip U4 is powered on and reset. The internal clock circuit of the control chip U4 is activated, working in conjunction with an external crystal oscillator to provide a precise system clock. Simultaneously, the reset circuit ensures that the control chip U4 begins executing the program from a known state.

[0048] After the control chip U4 starts up, it first executes the initialization program to configure the various functional modules integrated inside, including: the Universal Asynchronous Receiver / Transmitter (UART) interface for connecting the Bluetooth module, the Serial Peripheral Interface (SPI) bus for connecting the SPI Flash memory chip, the General Purpose Input / Output (GPIO) port for driving the LED dot matrix, and the Analog-to-Digital Converter (ADC) port for sampling audio signals.

[0049] After initialization, the control chip U4 reads the first headlight configuration data stored in the SPI Flash memory chip (e.g., control chip U12) via the SPI bus. This first headlight configuration data is non-volatile and includes the default boot animation, static light patterns, and user-defined special effects parameters. The control chip U4 loads the read configuration data into its internal memory, preparing to drive the LED dot matrix. Simultaneously, the Bluetooth module in the communication circuit enters broadcast mode, waiting for external device connections; the RS485 communication circuit completes initialization and is ready to receive driving signals from the vehicle controller.

[0050] The control chip U4 calculates and generates color data (RGB data) and brightness data for each LED pixel based on the loaded vehicle lighting configuration data or real-time received control commands. Subsequently, the control chip U4 outputs three sets of key drive control signals through its GPIO ports.

[0051] The first group is the data signal YS_OUT, which outputs the display data for each LED pixel serially. The second group is the latch clock signal RCLK, which controls the timing of latching serial data to the parallel output. The third group is the latch enable signal LE, which controls the update of the final output stage.

[0052] The three sets of signals mentioned above are transmitted to the serial-in parallel-out driver chip (e.g., 74HC595) on the LED dot matrix board. With the cooperation of the RCLK and LE signals, the driver chip converts the received serial data YS_OUT into a parallel signal, thereby independently controlling each LED in the LED matrix. Through the high-speed refresh of the control chip U4, utilizing the persistence of vision effect of the human eye, the LED dot matrix can stably display preset patterns, text, or dynamic animation effects.

[0053] This system supports two parallel control modes via communication circuitry: Bluetooth wireless communication and RS485 wired communication. Both modes are uniformly managed by the control chip U4 to adapt to different application scenarios.

[0054] Once an external device (such as a smartphone) establishes a connection with the Bluetooth chip U7 in the communication circuit via Bluetooth, the user can issue control commands through an application (APP).

[0055] In the lighting control chain, headlight control commands (such as "switch effects", "adjust brightness", "display scrolling text") output by external devices are received via Bluetooth chip U7. Bluetooth chip U7 converts these commands into headlight configuration signals via a serial port (BT_TXD / BT_RXD) and transmits them to control chip U4. In response to these headlight configuration signals, control chip U4 updates the first headlight configuration data in its storage space to the second headlight configuration data and stores it in the SPI Flash. Simultaneously, it directly adjusts the output of drive signals such as YS_OUT in real time according to the commands, thereby changing the display effect of the LED dot matrix.

[0056] In the audio linkage link, music played by an external device is transmitted as an audio stream to the Bluetooth chip U7. The Bluetooth chip U7 receives and decodes the digital audio data, then outputs an I2S format digital audio signal through its DACL / DACR pins. This signal is sent to an audio conversion circuit (e.g., control chip U6). The DAC chip in the audio conversion circuit converts the digital audio signal into an analog audio signal, which is then output from the LB1A / LB1B pins. This analog audio signal is split into two paths: one path is directly sent to the audio power amplifier circuit, where it is amplified and drives the vehicle audio system; the other path is sent to the conditioning circuit.

[0057] The conditioning circuit consists of operational amplifiers U14A and U14B and their surrounding resistor-capacitor network. This circuit first pre-amplifies and buffers the analog audio signal, then performs main amplification and filtering. Specifically, the conditioning circuit is configured to have a signal amplification factor of approximately 14 times and implement a high-pass filter with a cutoff frequency of 40Hz. After amplification and filtering, the audio signal is conditioned into a standard voltage signal YS_OUT and sent to the ADC sampling pin of the control chip U4. The control chip U4 samples this signal through the ADC, analyzes the volume, rhythm, and frequency characteristics of the audio in real time, and dynamically adjusts the brightness, color, and blinking frequency of the LED matrix based on the analysis results, thereby achieving the function of synchronized lighting effects with the music.

[0058] RS485 wired communication is primarily used for interaction with the vehicle's own control system. When the vehicle's controller detects driving conditions such as braking, steering, or changes in vehicle speed, it sends corresponding driving signals via the RS485 differential bus.

[0059] The differential signal enters the communication device through the system's first and second differential interfaces. The RS485 transceiver chip U5 converts the differential signal into a TTL level signal that the control chip U4 can recognize, and transmits it to the control chip U4 through the serial port (TX485 / RX485).

[0060] Upon receiving the driving signal, the control chip U4 interprets it into corresponding control commands. For example, upon receiving a "brake" signal, the control chip U4 immediately interrupts the currently running entertainment lighting mode and retrieves safety warning light data stored in its memory (e.g., flashing red lights at a high frequency or projecting a "STOP" warning pattern onto the ground). This safety warning function has higher priority than ordinary lighting decorations, thus ensuring driving safety. Similarly, upon receiving a "left turn" or "right turn" signal, the control chip U4 can control the LED matrix to achieve a sequential turn signal effect.

[0061] When the vehicle's ignition lock is closed, the control signal for the ignition lock device fails, and the power supply stops outputting +5V and +3.3V voltages. The control chip U4 detects a voltage drop through its power monitoring pin and triggers a power-down interrupt service routine. In this interrupt service routine, the control chip U4 writes volatile data such as current lighting settings and user configuration parameters to the SPI Flash memory chip for permanent storage. After the data is saved, each module of the system is powered down sequentially, awaiting the next power-on startup. This mechanism ensures that user-defined lighting configurations and system states are not lost after a complete power outage and are automatically restored upon the next power-on.

[0062] As described above, this embodiment uses a communication circuit to receive commands from external devices, and a control circuit updates the vehicle light configuration data in the storage space according to these commands. This allows for flexible customization and upgrades of the vehicle light display effects, greatly enriching the vehicle's personalized expression. Simultaneously, by controlling the synchronized operation of the vehicle lights and audio system through the control circuit, audiovisual effects such as music rhythm can be achieved, enhancing the vehicle's entertainment and interactive experience. Furthermore, the specific circuit structure, including an RS485 communication device, an SPI Flash storage device, and a tiered power supply, effectively ensures the system's stability, reliability, and anti-interference capabilities in complex in-vehicle environments.

[0063] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A vehicle lighting control system, characterized in that, The system includes: A communication circuit that, in response to a vehicle light control command output by an external device, outputs a vehicle light configuration signal. A control circuit, which is electrically connected to the communication circuit, updates the first vehicle light configuration data in the storage space configured by the control circuit to the second vehicle light configuration data in response to the vehicle light configuration signal. The control circuit responds to the headlight control signal output by the communication circuit, and controls the vehicle's headlights and audio system to work synchronously.

2. The system according to claim 1, characterized in that, The control circuit includes a control chip U4, a starting device, and a communication device, wherein the starting device and the communication device are electrically connected to the control chip U4 respectively. The starting device includes resistors R25, R26, and R28, and transistor Q6. The first end of resistor R25 is electrically connected to the control chip U4. The collector of transistor Q6 is electrically connected to the second end of resistor R25. The base of transistor Q6 is electrically connected to the first end of resistor R26 and the first end of resistor R28. The connection point between the second end of resistor R28 and the emitter of transistor Q6 is grounded. The second end of resistor R26 is connected to the first power supply terminal of the system. The communication device includes resistors R11, R12, R13, R14, R15, R16, R17, and R18, a transistor Q2, a capacitor C22, a control chip U5, diodes TVS1 and TVS2. The first end of resistor R14 is electrically connected to the control circuit. The connection point between the second end of resistor R14 and the first end of resistor R12 is electrically connected to the control chip U5. The second end of resistor R12 is connected to the second power supply terminal of the system. The first end of resistor R15 is also connected to the second power supply terminal of the system. The connection point between the second end of resistor R15 and the control chip U5 is electrically connected to the collector of transistor Q2. The emitter of transistor Q2 is grounded. The base of transistor Q2 is electrically connected to the first end of resistor R18. The connection point between the second end of resistor R18 and the first end of resistor R19 is electrically connected to the control chip U5. The control circuit is electrically connected as follows: the second end of resistor R19 is connected to the second power supply terminal of the system; the connection point between the first end of capacitor C22 and the first power supply terminal of the system is electrically connected to the control chip U5; the second end of capacitor C22 is grounded; the connection point between the control chip U5 and the first end of resistor R13 is sequentially connected to the first end of resistor R11 and the first end of diode TVS1; the second ends of resistor R11 and diode TVS1 are both grounded; the second end of resistor R13 is connected to the first differential interface of the system; the connection point between the control chip U5 and the first end of resistor R16 is sequentially connected to the first end of resistor R17 and the first end of diode TVS2; the second end of resistor R17 is connected to the first power supply terminal of the system; the second end of diode TVS1 is grounded; and the second end of resistor R16 is connected to the second differential interface of the system.

3. The system according to claim 2, characterized in that, The control circuit also includes a control chip U12, resistors R31, R32, R35, R36, R37, R38, R39, capacitors C44 and C45. Resistor R31 is connected between control chip U4 and control chip U12. Resistor R32 is connected between control chip U4 and control chip U12. The connection point between the first end of capacitor C44 and the second power supply terminal of the system is electrically connected to control chip U12. The second end of capacitor C44 is grounded. Resistor R35 is connected between control chip U4 and control chip U12. Resistor R36 is connected between control chip U4 and control chip U12. The first ends of resistors R37, R38, and R39 are all electrically connected to the second power supply terminal of the system. The second ends of resistors R37, R38, and R39 are respectively electrically connected to control chip U12. The first end of capacitor C45 is grounded. The second end of capacitor C45 is electrically connected to control chip U12.

4. The system according to claim 2, characterized in that, The control circuit also includes an electric lock device; the electric lock device includes resistors R29, R33, R41, R42, and R43, diode DZ3, capacitor C63, transistors Q4 and Q5, and a switching transistor Q7. The emitter of the switching transistor Q4 is electrically connected to the third power supply terminal of the system, and the collector of the switching transistor Q4 is electrically connected to the fourth power supply terminal of the system. Diode DZ3 is connected across the third power supply terminal of the system and the first terminal of resistor R41. Capacitor C63 is connected across the third power supply terminal of the system and the first terminal of resistor R41. The connection point of resistor R33 and the second terminal of the switching transistor Q7 is electrically connected to the emitter of transistor Q4. The connection point between the first terminal of the switching transistor Q7 and the first terminal of the resistor R41 is electrically connected to the base of the transistor Q4. The third terminal of the switching transistor Q7 is electrically connected to the fourth power supply terminal of the system. The second terminal of the resistor R41 is electrically connected to the collector of the transistor Q5. The first terminal of the resistor R29 is electrically connected to the fourth power supply terminal of the system. The second terminal of the resistor R29 is electrically connected to the emitter of the transistor Q5. The base of the transistor Q5 and the first terminal of the resistor R43 are electrically connected to the first terminal of the resistor R42. The connection point between the second terminal of the resistor R43 and the emitter of the transistor Q5 is grounded. The second terminal of the resistor R42 is electrically connected to the control chip U4.

5. The system according to claim 1, characterized in that, The system also includes a power supply device comprising an inductor L6, diodes D1, D2, and D3, a control chip U10, a control chip U2, capacitors EC7, EC3, EC8, C42, and C43, a resistor R4, a capacitor C9, and a capacitor C10. The cathode of diode D1 is electrically connected to the positive voltage terminal of the system's power supply, and the anode of diode D1 is electrically connected to the third power supply terminal of the system. The control chip U10 is electrically connected to the system's power supply terminal, the first terminal of capacitor EC7, the first terminal of capacitor C43, the second terminal of capacitor C43, the cathode of diode D3, the first terminal of capacitor C42, and the cathode of diode D2. The second terminal of capacitor EC7 and the diode... The anode of D3, the first terminal of capacitor EC8, and the first terminal of resistor R4 are all grounded. The second terminal of capacitor C43 is electrically connected to the first terminal of inductor L6. The connection point of the second terminal of inductor L6, the anode of diode D2, the second terminal of capacitor EC8, and the second terminal of resistor R4 is connected to the first power supply terminal of the system. The control chip U2 is electrically connected to the first power supply terminal and the second power supply terminal of the system respectively. The first terminal of capacitor C10 is electrically connected to the control chip U2, and the second terminal of capacitor C10 is grounded. The first terminal of capacitor C9 is electrically connected to the control chip U2, and the second terminal of capacitor C9 is grounded. The first terminal of capacitor EC3 is electrically connected to the second power supply terminal of the system, and the second terminal of capacitor EC3 is grounded.

6. The system according to claim 1, characterized in that, The power supply device also includes a diode TVS3, an interface Q1, a diode DZ1, resistors R1, R2, R3, R5, R6, and R34, capacitors C1, C3, C4, C41, C47, C48, C50, C51, and C52, and a control chip U1. The first terminal of the diode TVS3 is grounded. The connection point between the diode TVS3 and the fifth power supply terminal of the system is connected to the interface Q1. The interface Q1 and resistor R2 are both connected across the interface. The first terminal of resistor R6 is electrically connected to resistor R2. The connection point between the second terminal of resistor R6, the first terminal of capacitor C47, and the first terminal of capacitor C48 is grounded. The second terminals of capacitor C47 and C48 are electrically connected to the control chip U1. Resistor R34 is electrically connected to the control chip U1. The capacitors C41, R2, R3, R5, R6, and R34 are also connected. The first end of capacitor C4 is electrically connected to the control chip U1. The second end of capacitor C4 is grounded. Capacitor C1 is electrically connected to the control chip U1. The first end of inductor L1 is electrically connected to the control chip U1. The second end of inductor L1 is electrically connected to the first power supply terminal of the system. The first end of capacitor C3 is electrically connected to the control chip U1. The second end of capacitor C3 is grounded. The first ends of resistors R1, R3, and R5 are electrically connected to the control chip U1. The second end of resistor R1 is electrically connected to the first end of capacitor C2. The connection point between the second end of capacitor C2 and the second end of resistor R3 is electrically connected to the first power supply terminal of the system. The second end of resistor R5 is grounded. Capacitors C41, C50, C51, and C52 are connected across the second end of capacitor C2 and the second end of resistor R5.

7. The system according to claim 1, characterized in that, The power supply device also includes capacitors EC1, C5, C6, C7, C8, C11, C12, C57, C58, C59, C60, and C61; resistors R27, R30, R61, R63, R64, R65, R66, R67, R68, R69, R70, R71, and R72; inductors L2 and L7; diodes D4 and DZ2; switching transistor Q3; control chip U3; control chip U13; and interface Q8.The first terminals of capacitor EC1 and C57 are electrically connected to the positive voltage terminal of the system power supply. The second terminals of capacitor EC1 and C57 are grounded. Resistor R63 is connected between the positive voltage terminal of the system power supply and the control chip U13. The cathode of diode D4, the first terminal of capacitor C58, and the cathode of diode DZ2 are electrically connected to resistor R63. The second terminal of capacitor C58, the anode of diode DZ2, and the first terminal of capacitor C59 are electrically connected to the negative voltage terminal of the system power supply. The second terminal of capacitor C59 is electrically connected to the control chip U13. The anode of diode D4 is connected to resistor R63. The first terminal of resistor R69 is electrically connected to the control chip U13. Resistors R70 and R71 are both connected between the control chip U13 and the negative voltage terminal of the system power supply. Resistors R65, R66, and R67 are all connected between the control chip U13 and the first terminal of inductor L7. The first terminal of inductor L7 is electrically connected to the negative voltage terminal of the system power supply. The connection point between the second terminal of inductor L7 and the first terminal of resistor R69 is connected to interface Q8. The first terminals of capacitors C60 and C61, and the first terminal of resistor R68 are all electrically connected to the second terminal of inductor L7. The second terminals of capacitor C60, capacitor C61, and resistor R68 are all grounded. Resistor R64 is connected between interface Q8 and the first power supply terminal of the system. The first terminal of resistor R27 is electrically connected to interface Q8. The second terminal of resistor R27 is electrically connected to the collector of transistor Q3. The connection point between the base of transistor Q3 and the first terminal of resistor R30 is electrically connected to the first terminal of resistor R61. The second terminal of resistor R30 is electrically connected to the control circuit. The connection point between resistor R1 and the emitter of transistor Q3 is grounded. The first terminals of capacitors C5, C6, and C7 are grounded. All terminals are electrically connected to interface Q8. The second terminals of capacitors C5, C6, and C7 are all grounded. The first terminal of inductor L2 is electrically connected to interface Q8, and the second terminal of inductor L2 is electrically connected to the sixth power supply terminal of the system. The first terminal of capacitor C8 is electrically connected to the sixth power supply terminal of the system, and the second terminal of capacitor C8 is grounded. The connection point between the first terminal of capacitor C11 and control chip U3 is electrically connected to the seventh power supply terminal of the system, and the second terminal of capacitor C11 is grounded. The connection point between the first terminal of capacitor C12 and control chip U3 is electrically connected to the seventh power supply terminal of the system, and the second terminal of capacitor C12 is grounded.

8. The system according to claim 1, characterized in that, The communication circuit includes a control chip U7, capacitors C25, C31, C32, C33, C34, C35, C37, a control chip X2, a resistor R24, an inductor L4, and an inductor L5. The first terminal of capacitor C25 is electrically connected to the control chip U7, and the second terminal of capacitor C25 is grounded. The first terminal of capacitor C31 is electrically connected to the control chip U7, and the second terminal of capacitor C31 is grounded. The first terminal of capacitor C32 is electrically connected to the control chip U7, and the second terminal of capacitor C32 is grounded. The connection point between the first terminal of capacitor C33 and the control chip U7 is electrically connected to the control chip X2, and the second terminal of capacitor C33 is... The connection point of the control chip X2 is grounded. The first end of the capacitor C34 and the connection point of the control chip X2 are grounded. The second end of the capacitor C34 and the connection point of the control chip X2 are electrically connected to the control chip U7. The capacitor C35 is electrically connected to the control chip U7, and the second end of the capacitor C35 is grounded. The first end of the inductor L4 is electrically connected to the control chip U7, and the second end of the inductor L4 is grounded. The first end of the resistor R24 ​​is electrically connected to the first end of the inductor L4. The connection point of the second end of the resistor R24 ​​and the first end of the inductor L5 is electrically connected to the first end of the capacitor C37. The connection point of the second end of the inductor L5 and the second end of the capacitor C37 is grounded.

9. The system according to claim 1, characterized in that, The system further includes an audio conversion circuit that performs digital-to-analog conversion processing on the output signal of the audio system. The audio conversion circuit includes resistors R20, R21, R22, and R23; capacitors C26, C27, C28, C30, C36, C38, C39, C40; capacitor EC2; capacitor EC4; capacitor EC5; and a control chip U6. The first end of resistor R62 is electrically connected to the communication circuit. The connection point between the first ends of resistor R62 and R20 is electrically connected to the control chip U6. Capacitor C29 is electrically connected to the control chip U6. The first ends of capacitors C30, EC2, and EC5 are all electrically connected to the control chip U6. The second ends of capacitors C30, EC2, and EC5 are grounded. The first end of capacitor C3 is grounded. The second end of capacitor C3... The first terminal of capacitor C38 is electrically connected to the first terminal of resistor R22, the second terminal of resistor R22 is electrically connected to the control chip U6, the first terminal of capacitor C38 is electrically connected to the communication circuit, the second terminal of capacitor C38 is electrically connected to the first terminal of capacitor C39, the second terminal of capacitor C39 is electrically connected to the first terminal of resistor R23, the second terminal of resistor R23 is electrically connected to the control chip U6, the first terminal of capacitor C40 is electrically connected to the communication circuit, the second terminal of capacitor C40 is electrically connected to the first terminal of capacitor C39, the connection point between the first terminal of capacitor C26 and the first terminal of resistor R21 is electrically connected to the control chip U6, the second terminal of capacitor C27 is grounded, the first terminals of capacitor C27, C28, and EC4 are all grounded, and the second terminals of capacitor C27, C28, and EC4 are all electrically connected to the control chip U6.

10. The system according to claim 1, characterized in that, The audio system also includes a conditioning circuit for conditioning the output signal of the audio system. The conditioning circuit includes operational amplifiers U14A and U14B, resistors R53, R54, R56, R57, R58, R59, and R60, and capacitors C54 and C55. The first terminal of resistor R56 is grounded. The connection point between the second terminal of resistor R56 and the first terminal of resistor R53 is electrically connected to the inverting input terminal of operational amplifier U14A. The first terminal of capacitor C54 is electrically connected to the audio input terminal of the system. The connection point between the second terminal of capacitor C54 and the first terminal of resistor R60 is electrically connected to the non-inverting input terminal of operational amplifier U14A. The second terminal of resistor R60 is grounded. The connection point between the second end of resistor R53 and the output terminal of operational amplifier U14A is electrically connected to the first end of resistor R58. The connection point between the second end of resistor R58 and the first end of resistor R59 is electrically connected to the non-inverting input terminal of operational amplifier U14B. The second end of resistor R59 is grounded. The first end of resistor R55 is grounded. The connection point between the second end of resistor R55 and the first end of resistor R54 is electrically connected to the inverting input terminal of operational amplifier U14B. The connection point between the second end of resistor R54 and the output terminal of operational amplifier U14B is electrically connected to the first end of resistor R57. Resistor R57 and the first end of capacitor C55 are electrically connected to the audio output terminal of the system. The second end of capacitor C55 is grounded.

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