Intelligent driving status indication system and vehicle

Abstract

This utility model provides an intelligent driving status indication system and vehicle, relating to the field of vehicle lighting control. The intelligent driving status indication system includes: a domain controller, comprising a high-side drive module and a brightness enable module; and an intelligent driving status indicator panel, comprising a microcontroller unit, LED lights for indicating intelligent driving status, and corresponding drive circuits for the LED lights. The high-side drive module is connected to the power supply terminal of the intelligent driving status indicator panel and is configured to receive the vehicle's intelligent driving status signal from the domain controller and supply power to the indicator panel when the vehicle enters intelligent driving status. The brightness enable module is connected to the input terminal of the microcontroller unit and is configured to receive the vehicle's ambient brightness signal from the domain controller and output a brightness level signal matching the vehicle's ambient brightness to the microcontroller unit. The microcontroller unit is connected to the input terminal of the drive circuit and is configured to control the drive circuit to adjust the brightness of the LED lights according to the brightness level signal received.

Description

Technical Field

[0001] This utility model relates to the field of vehicle lighting control technology, and in particular to an intelligent driving status indication system and vehicle. Background Technology

[0002] With the rapid development of automotive intelligence, intelligent driving technology has been widely applied in various types of vehicles. Against this backdrop, equipping intelligent connected vehicles with dedicated external visual indicator systems is particularly necessary to establish reliable human-vehicle interaction and enable other road users to clearly and accurately identify whether a vehicle is in intelligent driving mode. This system not only helps enhance safety on public roads but also further improves overall traffic efficiency. Therefore, developing an external indicator system that can stably and clearly display the intelligent driving status of a vehicle has become an important technological requirement in the field of intelligent connected vehicles. Utility Model Content

[0003] This utility model provides an intelligent driving status indication system and vehicle, which aims to accurately convey the intelligent driving status of the vehicle through a clear and stable external visual indication scheme.

[0004] A smart driving status indication system, comprising: A domain controller, the domain controller including a high-side drive module and a brightness enable module; The intelligent driving status indicator board includes a microcontroller unit, LEDs for indicating intelligent driving status, and driving circuits corresponding to the LEDs. The high-side drive module is connected to the power supply terminal of the intelligent driving status indicator panel and is configured to receive the intelligent driving status signal of the vehicle and supply power to the intelligent driving status indicator panel when the vehicle enters the intelligent driving state. The brightness enable module is connected to the input terminal of the microcontroller and is configured to receive the ambient brightness signal of the vehicle and output a brightness level signal matching the ambient brightness of the vehicle to the microcontroller. The microcontroller is connected to the control terminal of the drive circuit and is configured to control the drive circuit to adjust the brightness of the LED light according to the brightness level signal when it receives the brightness level signal.

[0005] In the intelligent driving status indication system of this utility model, the high-side drive module supplies power to the intelligent driving status indicator board when the vehicle enters the intelligent driving state. The brightness enable module outputs the corresponding brightness level signal to the microcontroller according to the ambient brightness signal of the vehicle. The microcontroller controls the drive circuit to precisely adjust the brightness of the LED lights, thereby forming a visual prompting system that can adaptively adjust the brightness according to the ambient light, display stably and indicate clearly, accurately conveying the intelligent driving status of the vehicle.

[0006] Optionally, the LED light is coplanar with the vehicle's turn signals; the microcontroller unit is further configured to receive the vehicle's turn signal and, when the intelligent driving status indicator panel is powered and the vehicle's turn signals are activated, control the drive circuit to extinguish the LED light. This technical solution, by coplanarizing the LED light with the turn signals of vehicles on the same side, facilitates observation by drivers of other vehicles. Simultaneously, by configuring the microcontroller unit to extinguish the LED light when turn signal activation is detected, priority management of the turn signal relative to the intelligent driving status indicator is achieved. This effectively avoids display conflicts between coplanar optical signals, ensuring the absolute priority and recognizability of the turn signal in turning scenarios, thereby further improving the safety and reliability of road interactions.

[0007] Optionally, the intelligent driving status indicator panel further includes: a power reverse connection protection module, whose input terminal is connected to the power supply terminal of the intelligent driving status indicator panel, used to cut off when a power supply with reverse polarity is connected to the power supply terminal; and a low dropout linear regulator, whose input terminal is connected to the output terminal of the power reverse connection protection module, and whose output terminal is connected to the power supply terminal of the microcontroller, used to adjust the power supply voltage output by the power reverse connection protection module to match the operating voltage of the microcontroller. This technical solution, by setting a power reverse connection protection module and a low dropout linear regulator in the intelligent driving status indicator panel, constructs a stable and reliable power management architecture. Specifically, the power reverse connection protection module can effectively prevent circuit damage caused by reversed power polarity, ensuring the safety of the system under incorrect connection conditions; the low dropout linear regulator accurately converts the power supply voltage to match the operating voltage of the microcontroller, providing it with a stable power supply, thereby ensuring the stable operation of the microcontroller.

[0008] Optionally, the intelligent driving status indicator panel further includes a voltage control module, whose input terminal is connected to the output terminal of the power reverse connection protection module, and whose output terminal is connected to the LED light. The voltage control module is equipped with a boost circuit and a buck circuit, used to adjust the power supply voltage output by the power reverse connection protection module to match the operating voltage of the LED light. This technical solution achieves precise management of the LED light's operating voltage by setting a voltage control module containing a boost circuit and a buck circuit in the intelligent driving status indicator panel: the boost circuit ensures that sufficient driving voltage can still be provided when the LED light's input voltage is insufficient, while the buck circuit can stabilize the LED light within a safe operating range when the LED light's input voltage is too high, thereby ensuring that the LED light always operates under optimal voltage conditions.

[0009] Optionally, the driving circuit includes: a MOSFET driving module, whose control terminal is connected to the output terminal of the microcontroller, whose power supply terminal is connected to the input terminal of the voltage control module, and whose output terminal is connected to the power switch of the LED; and a sampling resistor, connected in series in the LED circuit, whose detection terminal is connected to the feedback terminal of the microcontroller. The microcontroller adjusts the duty cycle of the power switch by controlling the MOSFET driving module to maintain a constant operating current flowing through the LED. This technical solution can instantly compensate for current deviations caused by input voltage fluctuations or changes in LED temperature characteristics, ensuring that the current of the LED 22 remains stable at a preset value under any operating condition. This not only ensures high consistency in brightness output throughout all-weather operation, eliminating the brightness fluctuation and flicker problems common in traditional driving methods, but also significantly extends the lifespan of the LED 22 by limiting overcurrent risks, thus providing a continuous, reliable, and longer-lasting high-quality visual signal for intelligent driving status indication.

[0010] Optionally, the intelligent driving status indicator panel further includes a filtering module, whose input terminal is connected to the output terminal of the power reverse connection protection module, and whose output terminal is connected to the input terminal of the voltage control module, for suppressing electromagnetic interference. This technical solution constructs a complete electromagnetic interference protection system by adding a filtering module between the power reverse connection protection module and the voltage control module: the filtering module effectively suppresses conducted electromagnetic interference in the power line through its internal common-mode inductor and filter capacitor network, reducing the impact of high-frequency noise on subsequent circuits. This not only ensures the operational stability of sensitive components such as the microcontroller unit but also significantly improves the electromagnetic compatibility of the system, enabling the entire intelligent driving status indicator system to operate stably in the complex automotive electromagnetic environment and meet stringent automotive electronic electromagnetic compatibility standards.

[0011] Optionally, the intelligent driving status indicator panel further includes a diagnostic module for detecting the fault status of the LED lights; the domain controller further includes a diagnostic data acquisition module connected to the diagnostic module for receiving and recording the fault status detected by the diagnostic module. This technical solution establishes a complete fault monitoring and recording mechanism by setting a diagnostic module in the intelligent driving status indicator panel and configuring a connected diagnostic data acquisition module in the domain controller: the diagnostic module can detect open-circuit, short-circuit, and other fault statuses of the LED lights in real time, while the diagnostic data acquisition module promptly collects and stores this fault information, enabling the system to have self-diagnostic capabilities and historical data recording capabilities. This not only significantly improves the maintainability and functional safety of the system but also provides data support for subsequent fault analysis.

[0012] Optionally, the intelligent driving status indicator panel further includes a temperature sensor, disposed on the substrate of the LED light and connected to the input terminal of the microcontroller unit, for outputting a protection signal to the microcontroller unit when the detected temperature exceeds a threshold; wherein, the microcontroller unit is further configured to control the drive circuit to turn off the LED light upon receiving the protection signal. This technical solution constructs a comprehensive temperature protection mechanism by setting a temperature sensor on the LED light substrate and establishing a signal connection with the microcontroller unit: when the operating temperature of the LED light exceeds a preset threshold, the temperature sensor immediately outputs a protection signal to the microcontroller unit, triggering the microcontroller unit to control the drive circuit to cut off the current supply to the LED light, thereby achieving rapid and effective overheat protection. This not only prevents the LED light from light decay or damage due to long-term overheating, but also significantly improves the system's thermal management capability and long-term operational reliability, ensuring the stable operation of the intelligent driving status indicator system under various environmental conditions.

[0013] Optionally, the microcontroller unit is a general-purpose microcontroller unit that does not have an in-vehicle network communication controller, an in-vehicle network communication transceiver, or a local area network transceiver. This technical solution achieves significant system architecture optimization by employing a general-purpose microcontroller unit that does not have an in-vehicle network communication controller, an in-vehicle network communication transceiver, or a local area network transceiver. This simplified hardware configuration not only directly reduces system complexity but also avoids the additional power consumption and electromagnetic compatibility issues caused by communication circuits, while also making the layout of the intelligent driving status indicator panel more compact.

[0014] A vehicle including the aforementioned intelligent driving status indication system.

[0015] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means disclosed herein and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, specific embodiments of this utility model are described below. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the intelligent driving status indication system according to an embodiment of the present utility model.

[0018] Figure 2This is a schematic diagram of the LED lights in the intelligent driving status indication system of this utility model installed in the vehicle's rearview mirror.

[0019] Figure 3 This is a structural schematic diagram of the vehicle according to an embodiment of the present utility model. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0021] Based on the foregoing, with the rapid development of automotive intelligence, intelligent driving technology has been widely applied in various types of vehicles. Against this backdrop, to establish a reliable human-vehicle interaction relationship and enable other road users to clearly and accurately identify whether a vehicle is in intelligent driving mode, equipping intelligent connected vehicles with a dedicated external visual indication system is particularly necessary. This system not only helps enhance the safety of interactions on public roads but also further improves overall traffic efficiency. Therefore, this utility model proposes an intelligent driving status indication system and vehicle, aiming to accurately convey the intelligent driving status of the vehicle through a clear and stable external visual indication scheme.

[0022] The technical solutions provided by the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] One embodiment of this utility model provides an intelligent driving status indication system. Figure 1 This is a schematic diagram of the intelligent driving status indication system, which mainly includes two core components: a domain controller 1 and an intelligent driving status indicator panel 2. The domain controller 1, as the main control unit of the intelligent driving status indication system, integrates two key functional modules: a high-side drive module 11 and a brightness enable module 12. The intelligent driving status indicator panel 2, as the execution unit, includes a microcontroller unit 21, an LED light 22 specifically for indicating the intelligent driving status (e.g., emitting blue light to indicate that the vehicle has entered intelligent driving mode), and a drive circuit 23 that provides driving capability for the LED light.

[0024] Specifically, the high-side drive module 11 is directly connected to the power supply terminal of the intelligent driving status indicator board 2. It is configured to receive the intelligent driving status signal from the vehicle domain controller and immediately supply power to the intelligent driving status indicator board 2 when the intelligent driving status signal confirms that the vehicle has entered the intelligent driving state. This power supply process is essentially a unified power supply for all functional components on the indicator board (including the microcontroller 21, LED lights 22 and their corresponding drive circuits 23, etc.), providing a basic guarantee for the normal operation of the entire indicator system. In addition, the brightness enable module 12 is connected to the input terminal of the microcontroller 21 and is configured to receive the ambient brightness signal from the vehicle ambient light sensor and convert it into a digital brightness level signal that precisely matches the current ambient light conditions through a built-in analog-to-digital converter, and then output it to the microcontroller 21. Correspondingly, the microcontroller unit 21 is further connected to the input terminal of the drive circuit 23. After simultaneously receiving power and a brightness level signal, it precisely controls the operating state of the drive circuit 23 according to the brightness level signal, thereby achieving dynamic adjustment of the brightness of the LED lamp 22. For example, by changing the duty cycle of the pulse width modulation (PWM) or the output current reference value of the drive circuit 23, stepless adjustment of the brightness of the LED lamp 22 can be achieved. For example, the ambient brightness can be divided into two distinct operating ranges: the nighttime brightness range (low-illuminance environment) and the daytime brightness range (high-illuminance environment). Correspondingly, in the daytime brightness range, the brightness enable module 12 outputs a high-brightness level signal to the microcontroller unit 21. After receiving this signal, the microcontroller unit 21 controls the drive circuit to output a PWM waveform with a duty cycle of 100%, driving the LED lamp 22 to display in a high-brightness state, ensuring visual salience under strong ambient light. During the darker daylight hours, the brightness enable module 12 outputs a low-brightness signal; the microcontroller unit 21 then controls the drive circuit to output a PWM waveform with a 50% duty cycle, driving the LED light 22 to display in a low-brightness state. This differentiated brightness control strategy, while ensuring the effectiveness of the indicator function, effectively avoids glare interference to other road users at night due to excessively bright lights, significantly improving driving safety and the user-friendliness of human-machine interaction.

[0025] In summary, the intelligent driving status indication system of this invention constructs a complete closed-loop control chain through the coordinated operation of various functional modules. Specifically, the high-side drive module 11, as a power management unit, is responsible for intelligently switching the system power supply on and off based on the vehicle's intelligent driving status signals; the brightness enable module 12, as an environmental perception unit, is responsible for collecting ambient light information and generating corresponding digital brightness commands; the microcontroller unit 21, as the core processing unit, is responsible for command parsing and formulating output control strategies; and the drive circuit 23, as the final execution unit, is responsible for converting control signals into precise LED drive currents. This modular division of labor architecture ensures that the system can automatically adjust the indication brightness according to ambient light conditions. For example, it maintains high brightness in strong daylight to ensure clarity, and switches to low brightness mode in low light conditions at night to avoid glare. Ultimately, this forms a stable, highly adaptive, and clearly identifiable visual prompting system that accurately conveys the vehicle's current intelligent driving status to the outside world, effectively improving the safety of intelligent connected vehicles interacting with their surroundings.

[0026] In practical applications, the LED lights 22 and the vehicle turn signals in this embodiment are arranged in a layout where they are physically coplanar. For example... Figure 2 As shown, the LED lights 22 are preferably mounted on the outer housing of the vehicle's rearview mirror, arranged at intervals along the same horizontal line as the existing turn signals on the rearview mirror. This compact layout design allows road users (including drivers of other vehicles, pedestrians, etc.) to simultaneously obtain intelligent driving status indications and turn signal indications from the same visual focal area, significantly improving the recognition efficiency and ease of observation of key driving information. Building upon this, to further optimize the coordination of signal prompts, the input of the microcontroller unit 21 is also used to receive the vehicle's turn signal. When the turn signal indicates that the turn signal is activated, the microcontroller control circuit 23 controls the LED lights 22 to turn off (e.g., by cutting off the power supply to the LED lights 22). It should be understood that this design ensures that the turn signal has absolute display priority in turning scenarios. This mechanism effectively solves the display conflict problem that may arise from coplanar optical signals. Through intelligent signal coordination control, it completely eliminates visual confusion or information ambiguity that may result from multiple light signals illuminating simultaneously, significantly improving the accuracy and safety of the vehicle's interaction with its surroundings.

[0027] Furthermore, the intelligent driving status indicator board 2 of this utility model also integrates a dedicated power management subsystem, which mainly includes a reverse connection protection module 24 and a low dropout linear regulator 25. The input terminal of the reverse connection protection module 24 is directly connected to the power supply terminal of the intelligent driving status indicator board 2. Internally, it uses a main circuit path composed of a P-MOSFET to achieve the reverse connection protection function. The source of the P-MOSFET is connected to the power supply terminal of the intelligent driving status indicator board 2, the drain is connected to the subsequent circuit, and the gate is pulled down to ground through a bias resistor. When the power supply terminal of the intelligent driving status indicator board 2 is connected to the correct forward voltage, the body diode conducts first, causing the source potential to rise. When the source-gate voltage exceeds its threshold, the P-MOSFET is fully turned on, forming a low-impedance path. If the power supply terminal of the intelligent driving status indicator board 2 is accidentally connected to a reverse polarity voltage, both the body diode and the channel of the P-MOSFET are in a reverse bias state, preventing the formation of a current path. The circuit quickly enters a cutoff state, effectively blocking the reverse current and preventing irreversible damage to subsequent circuit components due to reverse polarity connection. It should be understood that the reverse connection protection module 24 and the low-dropout linear regulator 25 work together to construct a complete power processing link. Specifically, the reverse connection protection module 24 acts as a "gatekeeper" to ensure the safety of the power input, while the low-dropout linear regulator 25 acts as a "voltage regulator" to ensure the stability of the power quality. This dual protection design not only extends the service life of the intelligent driving status indicator board but also provides a solid power guarantee for the stable operation of the entire system, enabling it to adapt to the complex power environment of the vehicle's electrical system.

[0028] Furthermore, the intelligent driving status indicator panel 2 of this utility model also integrates a voltage control module 26. This voltage control module 26 occupies a crucial position in the circuit layout: its input terminal is connected to the output terminal of the reverse connection protection module 24, receiving a polarity-protected power input; its output terminal is connected to the LED light 22, providing it with a precisely adjusted operating voltage. The core function of the voltage control module 26 lies in its integration of two different types of voltage conversion circuits: a boost circuit and a buck circuit. The boost circuit employs inductor energy storage and capacitor filtering. When the input voltage is detected to be lower than the minimum operating voltage required by the drive circuit 23, it can quickly boost the input voltage to the target value through a rapid switching operation, ensuring that the LED light 22 still receives sufficient driving voltage and maintains normal brightness output even under conditions such as vehicle start-up and acceleration that cause a momentary drop in power supply voltage. The complementary buck circuit uses pulse width modulation technology. When the input voltage is too high, it adjusts the duty cycle of the switching signal to stabilize the voltage down to the safe operating range of the drive circuit 23, preventing overvoltage damage to circuit components. This composite voltage control architecture enables precise management of the entire operating voltage range of the drive circuit. Through intelligent switching or coordinated operation of two circuit modes, the voltage control module 26 can consistently stabilize the fluctuating input voltage of the vehicle power system (such as the common 9V-16V range) within the optimal operating voltage range required by the drive circuit 23. This not only ensures the consistency and stability of the brightness output of the LED light 22 under different power conditions, avoiding brightness flickering or attenuation caused by voltage fluctuations, but also significantly enhances the system's adaptability to complex on-board power environments.

[0029] Furthermore, the driving circuit 23 of this invention adopts a high-precision driving architecture with current closed-loop control function. Through the coordinated operation of the MOSFET driving module 231 and the sampling resistor 232, a complete current control loop is constructed. In terms of circuit connections, the control terminal of the MOSFET driving module 231 is connected to the output terminal of the microcontroller unit 21, its power supply terminal is connected to the input terminal of the voltage control module 26, and its output terminal is connected to the power switch of the LED lamp 22. The sampling resistor 232 is connected in series in the circuit of the LED lamp 22, and its detection terminal is connected to the feedback terminal of the microcontroller unit 21, forming a current sampling feedback path. Specifically, the microcontroller unit 21 is configured to adjust the duty cycle of the power switch by controlling the MOSFET driving module 231, thereby maintaining a constant operating current flowing through the LED lamp 22. This closed-loop control architecture can instantly compensate for current deviations caused by input voltage fluctuations or changes in LED temperature characteristics, ensuring that the current of LED 22 remains stable at the preset value under any operating condition. This not only ensures that the brightness output remains highly consistent throughout the day, eliminating the brightness fluctuation and flickering problems common in traditional driving methods, but also significantly extends the lifespan of LED 22 by limiting overcurrent risks, thus providing a continuous, reliable, and longer-lasting high-quality visual signal for intelligent driving status indication.

[0030] Furthermore, the intelligent driving status indicator board 2 of this utility model can also be configured with a filter module 27, whose input terminal is connected to the output terminal of the power reverse connection protection module 24, and whose output terminal is connected to the input terminal of the voltage control module 26. That is, electromagnetic interference protection is achieved by adding a filter module between the power reverse connection protection module 24 and the voltage control module 26. Specifically, the filter module 27 effectively suppresses conducted electromagnetic interference in the power line and reduces the impact of high-frequency noise on subsequent circuits through its internal common-mode inductor and filter capacitor network. This not only ensures the operational stability of sensitive components such as the microcontroller unit 21, but also significantly improves the electromagnetic compatibility of the system, enabling the entire intelligent driving status indicator system to operate stably in the complex automotive electromagnetic environment and meet the stringent automotive electronic electromagnetic compatibility standards.

[0031] Furthermore, the intelligent driving status indicator board 2 of this utility model can also integrate a fault diagnosis system. This system consists of a diagnostic module 28 set on the indicator board and a diagnostic feedback module 13 in the domain controller 1, forming a closed-loop monitoring and management system across modules. The diagnostic module 28 is used to determine various fault states such as LED open circuit, output short circuit, overcurrent, and chip failure. The diagnostic feedback module 13 is connected to the diagnostic module 28 and is used to receive and record the fault information reported by the diagnostic module 28, forming a traceable system fault history archive. This mechanism not only gives the system the ability to self-diagnose and accurately locate faults, greatly improving maintainability, but also provides complete data support for subsequent fault analysis and system optimization, thereby significantly enhancing the functional safety of the system, ensuring that protection strategies can be implemented in a timely manner under abnormal conditions, effectively improving the operational reliability of the intelligent driving status indicator system under all working conditions, and adding important protection for the safety of the entire vehicle.

[0032] Optionally, the intelligent driving status indicator panel also integrates a temperature sensor 29. This temperature sensor 29 is directly mounted on the substrate of the LED light 22 and connected to the analog or digital input of the microcontroller unit 21 to monitor the operating temperature of the LED light 22 in real time. When the detected temperature exceeds a preset safety threshold, the temperature sensor 29 sends a protection signal to the microcontroller unit 21. Upon receiving this signal, the microcontroller unit 21 immediately cuts off the current to the LED light through the control drive circuit, extinguishing it and thus achieving active overheat protection. It should be understood that this design, by combining temperature sensing with control execution, constructs a rapid-response and accurate thermal management mechanism. It can intervene promptly in the early stages of abnormal temperature increases, effectively preventing LEDs from experiencing light decay, color shift, or permanent damage due to continuous overheating, significantly improving the thermal reliability and lifespan of the indicator panel. Simultaneously, this integrated protection design also enhances the adaptability and stability of the intelligent driving status indicator system under complex environments and long-term operating conditions.

[0033] Furthermore, the microcontroller unit 21 of this invention adopts a general-purpose microcontroller unit that does not have an in-vehicle network communication controller, an in-vehicle network communication transceiver, or a local area network transceiver. In other words, by simplifying the communication functions, the system architecture is optimized: on the one hand, it significantly reduces hardware complexity and component costs, and avoids the additional power consumption and electromagnetic compatibility issues that may be introduced by the communication circuit; on the other hand, it makes the circuit layout of the intelligent driving status indicator board more compact, improving hardware integration and space utilization.

[0034] The above is an exemplary description of the intelligent driving status indication system of this utility model. During system operation, when the vehicle is in intelligent assisted driving mode, the domain controller controls the high-side drive module to output 12V power supply according to the intelligent driving system instructions. At the same time, the brightness enable module outputs a brightness level signal of corresponding level according to the ambient light conditions. For example, in daylight conditions, it outputs a low-level signal to drive the LED indicator to brighten; in night or low-light conditions, it outputs a high-level signal to drive the LED indicator to switch to low-brightness mode. The system achieves stable power supply through a complete power management link. When the diagnostic module detects an LED fault, it immediately reports the fault status to the domain controller through the diagnostic loop. In addition, the system also establishes a signal priority mechanism. When the turn signal is activated, the microcontroller detects the turn signal voltage and automatically turns off the LED indicator on the same side to ensure that the turn signal indication has the highest display priority, while maintaining the normal operation of the indicator on the other side.

[0035] It should be noted that the intelligent driving status indication system of this utility model is entirely based on the innovation and optimization of the communication interface, electrical characteristics and working principle of the defined hardware architecture, without relying on any improvement of upper-level software programs or control algorithms. Specifically: the system interacts with the intelligent driving status indicator board through a physical communication link established by the domain controller and the intelligent driving status indicator board based on hard-wired connection (such as LIN bus or dedicated hard-wired signal); the high-side drive module (such as the Infineon TLE7244 and other intelligent high-side switch chips) directly responds to the intelligent driving status signal of the vehicle domain controller through its internal integrated hardware logic circuit, realizing hardware-level switching control of power supply to the indicator board; the brightness enable module (such as the TLC7524 and other digital-to-analog converter chips or the threshold judgment circuit composed of them and comparators) directly converts the analog or digital signals collected by the ambient light sensor into corresponding high and low level signals or specific resistance values ​​through its hardware circuit, and outputs the brightness level signal to the microcontroller unit in hardware. After receiving power, the microcontroller unit (such as a general-purpose MCU like the STM32F103C8T6) directly outputs corresponding control signals to the drive circuit through its general-purpose input / output (GPIO) pins or a hardware PWM generator, based on its internally embedded hardware logic or preset PWM output mapping relationship, according to the received hardware level signal. The entire control process, including immediately cutting off the PWM output when a turn signal activation signal is detected (through another GPIO input) and executing shutdown protection after receiving an over-temperature signal transmitted through hardware wiring from a temperature sensor (such as an NTC thermistor or a DS18B20 digital temperature sensor), is completed by the direct response of the microcontroller unit's peripheral hardware circuitry and its internal hardware functional units. In addition, the detection of LED fault status by the peripheral diagnostic module (such as a current detection and comparison circuit based on operational amplifiers) and the latching and recording of fault signals by the diagnostic sampling module are all implemented through dedicated hardware circuitry. The entire system forms a complete solution consisting of a pure hardware signal chain and power management path. All functions are guaranteed by the electrical characteristics and deterministic logical relationships of each hardware module, ensuring the high reliability and real-time performance of the system.

[0036] In addition, another embodiment of this utility model provides a vehicle. Figure 3 This is a structural schematic diagram of the vehicle 300, including the aforementioned intelligent driving status indication system 310. It should be noted that when the vehicle in this embodiment serves as the application subject of the aforementioned intelligent driving status indication system, it can achieve the same technical effects as the intelligent driving status indication system; further examples will not be provided here.

[0037] Through the above description of the embodiments, those skilled in the art can understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the circuit can be divided into different functional modules to complete all or part of the functions described above.

[0038] In the embodiments provided by this utility model, it should be understood that the disclosed circuits can be implemented in other ways. For example, the circuit embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another circuit, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection of circuits or units, and may be electrical, mechanical, or other forms.

[0039] In the description of this disclosure, it should be understood that if the terms "upper", "lower", "front", "back", "left" and "right" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the position or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

Claims

1. A smart driving status indication system, applied to a vehicle, characterized in that, include: A domain controller, the domain controller including a high-side drive module and a brightness enable module; The intelligent driving status indicator board includes a microcontroller unit, LEDs for indicating intelligent driving status, and driving circuits corresponding to the LEDs. The high-side drive module is connected to the power supply terminal of the intelligent driving status indicator panel and is configured to receive the intelligent driving status signal of the vehicle and supply power to the intelligent driving status indicator panel when the vehicle enters the intelligent driving state. The brightness enable module is connected to the input terminal of the microcontroller and is configured to receive the ambient brightness signal of the vehicle and output a brightness level signal matching the ambient brightness of the vehicle to the microcontroller. The microcontroller is connected to the control terminal of the drive circuit and is configured to control the drive circuit to adjust the brightness of the LED light according to the brightness level signal when it receives the brightness level signal.

2. The system according to claim 1, characterized in that, The LED light is arranged on the same plane as the vehicle's turn signal; The microcontroller unit is also configured to receive the vehicle's turn signal and, when the intelligent driving status indicator panel is powered and the vehicle's turn signal is activated, control the drive circuit to turn off the LED light.

3. The system according to claim 1, characterized in that, The intelligent driving status indicator panel also includes: The power reverse connection protection module has its input terminal connected to the power supply terminal of the intelligent driving status indicator board, and is used to cut off when the power supply terminal is connected to a power supply with reverse polarity; A low-dropout linear regulator has its input terminal connected to the output terminal of the reverse polarity protection module and its output terminal connected to the power supply terminal of the microcontroller unit. It is used to adjust the power supply voltage output by the reverse polarity protection module to match the operating voltage of the microcontroller unit.

4. The system according to claim 3, characterized in that, The intelligent driving status indicator panel also includes: The voltage control module has its input terminal connected to the output terminal of the reverse connection protection module and its output terminal connected to the LED light. The voltage control module is equipped with a boost circuit and a buck circuit to adjust the power supply voltage output by the reverse connection protection module to match the working voltage of the LED light.

5. The system according to claim 4, characterized in that, The driving circuit includes: The MOSFET driver module has its control terminal connected to the output terminal of the microcontroller unit, its power supply terminal connected to the input terminal of the voltage control module, and its output terminal connected to the power switch of the LED lamp. A sampling resistor is connected in series in the circuit of the LED lamp, and its detection end is connected to the feedback end of the microcontroller unit; The microcontroller unit adjusts the duty cycle of the power switch by controlling the MOSFET drive module to maintain a constant operating current flowing through the LED.

6. The system according to claim 4, characterized in that, The intelligent driving status indicator panel also includes: The filter module has its input terminal connected to the output terminal of the power supply reverse connection protection module and its output terminal connected to the input terminal of the voltage control module, and is used to suppress electromagnetic interference.

7. The system according to claim 1, characterized in that, The intelligent driving status indicator panel also includes: A diagnostic module, used to detect the fault status of the LED light; The domain controller also includes: A diagnostic data acquisition module, connected to the diagnostic module, is used to receive and record the fault status detected by the diagnostic module.

8. The system according to claim 1, characterized in that, The intelligent driving status indicator panel also includes: A temperature sensor is mounted on the substrate of the LED lamp and connected to the input terminal of the microcontroller unit. It is used to output a protection signal to the microcontroller unit when the detected temperature exceeds a threshold. The microcontroller unit is also configured to control the drive circuit to turn off the LED light when it receives the protection signal.

9. The system according to any one of claims 1 to 7, characterized in that, The microcontroller unit is a general-purpose microcontroller unit that does not have an in-vehicle network communication controller, an in-vehicle network communication transceiver, or a local area network transceiver.

10. A vehicle, characterized in that, The system includes the intelligent driving status indication system according to any one of claims 1-9.

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