Adaptive tail light control method and vehicle-mounted lighting controller mainboard

Abstract

The application discloses an adaptive tail light control method and a vehicle-mounted lighting controller mainboard, and the method comprises the following steps: S101, acquiring a sensor type carried by a following vehicle behind a target vehicle; S102, generating a PWM control parameter according to the sensor type; S103, controlling the tail light of the target vehicle to emit light according to the PWM control parameter; and S104, monitoring whether the following vehicle is replaced by a new vehicle, and if the following vehicle is replaced by a new vehicle, re-executing S101 to S103. According to the sensor type carried by the following vehicle, the corresponding PWM control parameter can be generated, and the light-emitting mode of the tail light of the target vehicle can be controlled according to the corresponding PWM control parameter, so that the interference of the tail light signal on the sensor of the following vehicle behind the target vehicle can be avoided, and the identification accuracy and the sensing reliability of the rear vehicle auxiliary driving system on the target vehicle can be improved.

Description

Technical Field

[0001] This application relates to the field of vehicle lighting control technology, specifically to an adaptive taillight control method and a vehicle lighting controller motherboard. Background Technology

[0002] With the development of intelligent assisted driving technology, collaborative safety control between vehicles has become increasingly important. Taillights, as a key visual signal for communication between a vehicle and those behind, have control strategies that directly impact driving safety. Traditional taillights typically use fixed light signals (such as constant illumination or simple flashing), primarily to convey braking or steering intentions to the driver. However, with the increasing prevalence of intelligent assisted driving vehicles equipped with various sensing systems (such as millimeter-wave radar, lidar, and cameras), the single light signal output of traditional taillights can interfere with the sensing systems of vehicles behind, affecting the reliability of their assisted driving systems. Summary of the Invention

[0003] This application discloses an adaptive taillight control method and an onboard lighting controller motherboard, which generates PWM control parameters based on the sensor type of the following vehicle to control the taillights to emit light. This method can avoid interfering with the perception system of the following vehicle and improve the reliability of the following vehicle's driver assistance system.

[0004] In a first aspect, embodiments of this application disclose an adaptive taillight control method, comprising the following steps: S101: obtaining the sensor type of a following vehicle behind the target vehicle; S102: generating PWM control parameters according to the sensor type; S103: controlling the taillights of the target vehicle to emit light according to the PWM control parameters; S104: monitoring whether the following vehicle has been replaced by a new vehicle; if it is detected that the following vehicle has been replaced by a new vehicle, then re-execute S101 to S103; S101 includes: receiving the sensor type broadcast by the following vehicle through vehicle wireless communication technology; if the sensor type is not received through vehicle wireless communication technology within a preset time delay, then collecting the sensor characteristics of the following vehicle through the rear-facing camera or lidar of the target vehicle; comparing the sensor characteristics with preset sensor characteristics to determine the sensor type of the following vehicle.

[0005] As one possible implementation, the sensor types include millimeter-wave radar, lidar, and cameras. The PWM control parameters include frequency and infrared light source on / off status. The PWM control parameters generated according to the sensor type include: when the sensor type on the following vehicle is millimeter-wave radar, a PWM modulation signal with a frequency of 1-5Hz is generated and the infrared light source is turned off; when the sensor type on the following vehicle is lidar, a PWM modulation signal with a frequency of 20±2Hz is generated and the infrared light source is turned off; when the sensor type on the following vehicle is a camera, a PWM modulation signal with a frequency of 50-60Hz is generated and an infrared light source with a wavelength of 850nm is turned on.

[0006] As one possible implementation, the PWM control parameters include duty cycle and spatial coverage of the taillight pattern. The method further includes: acquiring the relative distance between the following vehicle and the target vehicle; generating PWM control parameters according to the sensor type further includes: when the relative distance is less than or equal to 30 meters, generating a PWM modulation signal with a duty cycle of 80-100%, and controlling 80-100% of the programmable LED units in the taillight display area to light up to form a full-coverage pattern; when the relative distance is greater than 30 meters and less than or equal to 100 meters, generating a PWM modulation signal with a duty cycle of 50-80%, and controlling 40-60% of the programmable LED units in the taillight display area to light up to form a medium-sized pattern; when the relative distance is greater than 100 meters, generating a PWM modulation signal with a duty cycle of 30-50%, and controlling 20-30% of the programmable LED units in the taillight display area to light up to form a standardized warning symbol.

[0007] As one possible implementation, the PWM control parameters include a frequency fine-tuning value and a dynamic light effect form of the taillight pattern. The method further includes: acquiring the relative speed between the following vehicle and the target vehicle; generating PWM control parameters according to the sensor type further includes: when the relative speed is less than or equal to -10 m / s, increasing the frequency fine-tuning value by 1-3 Hz at the frequency corresponding to the sensor type, and controlling the taillight display area to perform a lateral scanning light animation, with a scanning cycle of 3-5 times / second; when the relative speed is greater than -10 m / s and less than or equal to 0 m / s, maintaining the frequency corresponding to the sensor type, and controlling the taillight display area to perform a breathing light effect, with a brightness change cycle of 1-2 seconds; when the relative speed is greater than 0 m / s, decreasing the frequency fine-tuning value by 0.5-1 Hz at the frequency corresponding to the sensor type, and controlling the taillight display area to switch to a static pattern mode.

[0008] As one possible implementation, the method further includes: if the type of sensor carried by the following vehicle is not obtained, generating a PWM modulation signal with a frequency of 55Hz and a duty cycle of 60%, and turning off the infrared light source.

[0009] Secondly, this application discloses a vehicle lighting controller motherboard, including: a host and a remote controller; the host is equipped with a power supply module, an MCU main control module, a wireless receiving module, a multi-power output module, an indicator light module, a learning button module, and a microcontroller control module. The wireless receiving module, multi-power output module, indicator light module, learning button module, and microcontroller control module are respectively connected to the MCU main control module. The wireless receiving module is communicatively connected to the remote controller. The multi-power output module includes: multiple power output circuits that output different levels of current. The input terminal of each output circuit is connected to the output terminal of the MCU main control module, and the output terminal of each power output circuit serves as an output channel connected to an external functional device. The remote controller includes multiple transmit buttons corresponding to the number of power output circuits. The learning button module includes at least a learning button. By clicking the learning button, a code recording channel is selected, so that each transmit button controls one or more output channels of the multi-power output module to output the corresponding functional mode through code matching, and controls the corresponding indicator light of the indicator light module to light up. The adaptive control microcontroller module is used to execute the above-mentioned adaptive taillight control method.

[0010] As one possible implementation, the functional modes include: overtaking mode, which alerts surrounding vehicles through a specific corresponding function mode; horn mode, which warns through horn sound effects; SOS mode, which sends out an emergency distress signal through continuous and intense light flashing; DRL mode, which provides continuous and stable light output to improve daytime driving safety; i.e., daylight headlight function; and strobe mode, which attracts attention through rapid and intense light flashing, commonly used in emergency vehicles such as police cars and ambulances.

[0011] As one possible implementation, the host also includes a power-on control module, which has an ACC input terminal connected to the car's ACC line. The power-on control module is used to start normal operation when the car is detected to be ignited, and to operate with low power consumption when the ACC line is not connected.

[0012] As one possible implementation, the multi-power output module includes: two power output circuits that output 30A current, two power output circuits that output 20A current, and two power output circuits that output 10A current.

[0013] In this embodiment, the adaptive taillight control method includes the following steps: S101: Obtain the sensor type of the following vehicle; S102: Generate PWM control parameters according to the sensor type; S103: Control the taillights of the target vehicle to emit light according to the PWM control parameters; S104: Monitor whether the following vehicle has been replaced by a new vehicle. If a new vehicle is detected, S101 to S103 are executed again. It is evident that by generating corresponding PWM control parameters based on the sensor type of the following vehicle and controlling the taillight emission mode of the target vehicle according to these parameters, interference from the taillight signal to the sensors of the following vehicle can be avoided. This improves the accuracy and reliability of the following vehicle's driver assistance system in identifying the target vehicle, thereby reducing the risk of rear-end collisions and misjudgments, and ultimately enhancing the safety of the target vehicle in an intelligent driving environment. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a flowchart illustrating an adaptive taillight control method disclosed in an embodiment of this application;

[0016] Figure 2 This is a flowchart illustrating another adaptive taillight control method disclosed in an embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the structure of a vehicle lighting controller motherboard disclosed in an embodiment of this application;

[0018] Figure 4 This is a schematic diagram of the structure of a power supply module disclosed in an embodiment of this application;

[0019] Figure 5 This is a schematic diagram of the structure of a power feedback module disclosed in an embodiment of this application;

[0020] Figure 6 This is a schematic diagram of the structure of a power-stage voltage regulator module disclosed in an embodiment of this application;

[0021] Figure 7 This is a schematic diagram of the structure of a communication interface module disclosed in an embodiment of this application;

[0022] Figure 8 This is a schematic diagram of the structure of an MCU main control module disclosed in an embodiment of this application;

[0023] Figure 9 This is a schematic diagram of the structure of an input voltage detection module disclosed in an embodiment of this application;

[0024] Figure 10 This is a schematic diagram of the structure of a multi-power output module disclosed in an embodiment of this application;

[0025] Figure 11 This is a schematic diagram of the structure of a wireless receiving module disclosed in an embodiment of this application;

[0026] Figure 12 This is a schematic diagram of the structure of an indicator light module disclosed in an embodiment of this application;

[0027] Figure 13 This is a schematic diagram of the structure of a multi-channel power output port module disclosed in an embodiment of this application;

[0028] Figure 14 This is a schematic diagram of the structure of an encoding control module disclosed in an embodiment of this application;

[0029] Figure 15 This is a schematic diagram of the structure of a toggle switch module disclosed in an embodiment of this application;

[0030] Figure 16 This is a schematic diagram of the structure of a wireless transmission module disclosed in an embodiment of this application;

[0031] Figure 17 This is a schematic diagram of the structure of a charging management module disclosed in an embodiment of this application;

[0032] Figure 18 This is a schematic diagram of the structure of a charging status indication module disclosed in an embodiment of this application;

[0033] Figure 19 This is a schematic diagram of the structure of a TYPE-C interface module disclosed in an embodiment of this application. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0035] This application discloses an adaptive taillight control method and an onboard lighting controller motherboard, used to generate pulse width modulation (PWM) control parameters based on the sensor type of the following vehicle to control the taillight illumination, avoiding interference with the perception system of the following vehicle and improving the reliability of the following vehicle's driver assistance system. Detailed descriptions follow.

[0036] To better understand the embodiments of this application, the relevant technologies are described below.

[0037] Modern taillights have evolved from traditional functions like indicating width and braking to intelligent communication devices that can transmit auxiliary information such as distance and status. Currently, some systems are beginning to enhance the communication capabilities of taillights through methods such as PWM signals, pattern flashing, or infrared illumination. However, these unmodulated light signals may interfere with sensors on following vehicles.

[0038] If the sensors of the following vehicle are millimeter-wave radar systems, the high-frequency PWM modulated visible light may be mistakenly identified as a false target by the millimeter-wave radar system, causing the following vehicle's Automatic Emergency Braking (AEB) system to trigger emergency braking.

[0039] If the sensors of the following vehicle are lidar systems, the resonance between low-frequency pulses (such as 10Hz) and the lidar scanning cycle (20Hz) will cause periodic noise in the point cloud data, affecting the accuracy of obstacle detection.

[0040] If the sensor of the following vehicle is a camera system, an incompatible strong light flicker (such as 100Hz) will cause local overexposure of the camera image, making key features (such as the outline of the brake light) unrecognizable.

[0041] To address the aforementioned technical problems, the adaptive taillight control method in this embodiment includes the following steps: S101: Obtaining the sensor type of the following vehicle; S102: Generating PWM control parameters based on the sensor type; S103: Controlling the taillights of the target vehicle to illuminate according to the PWM control parameters; S104: Monitoring whether the following vehicle has been replaced by a new vehicle. If a new vehicle is detected, S101 to S103 are executed again. It is evident that by generating corresponding PWM control parameters based on the sensor type of the following vehicle and controlling the taillight illumination mode of the target vehicle according to these parameters, interference from the taillight signal to the sensors of the following vehicle can be avoided. This improves the accuracy and reliability of the following vehicle's driver assistance system in identifying the target vehicle, thereby reducing the risk of rear-end collisions and misjudgments, and ultimately enhancing the safety of the target vehicle in an intelligent driving environment.

[0042] Please see Figure 1 , Figure 1 This is a flowchart illustrating an adaptive taillight control method disclosed in an embodiment of this application. This adaptive taillight control method can be applied to vehicles capable of mounting taillights. Figure 1 As shown, the adaptive taillight control method may include the following steps.

[0043] S101: Obtain the sensor types of the following vehicles behind the target vehicle (this vehicle).

[0044] In one embodiment, S101 may include the following steps:

[0045] S201: Sensor type that receives broadcasts following the vehicle via vehicle wireless communication technology.

[0046] In this embodiment, the target vehicle listens to and receives vehicle status information, including the types of its onboard sensors, broadcast by a following vehicle via Vehicle To Everything (V2X) or Dedicated Short Range Communication (DSRC). When vehicle status information including the types of its onboard sensors is successfully received, the sensor types are directly extracted for subsequent steps.

[0047] S202: If the sensor type is not received via vehicle wireless communication technology within a preset time delay, the sensor characteristics of the following vehicle are collected via the target vehicle's rear-view camera or LiDAR.

[0048] If the sensor type cannot be obtained through vehicle wireless communication technology within a preset time delay, the target vehicle will activate its rear-facing camera or rear-facing lidar device to perceive following vehicles and collect, but not limited to, the following feature information:

[0049] The lidar module protrudes from the roof or windshield area;

[0050] Millimeter-wave radar dome structure at the front grille or bumper;

[0051] The layout of the camera array above the windshield;

[0052] And / or, using lidar point cloud data of the target vehicle, detect the reflection characteristics of sensor mounting sites following the vehicle's outer surface.

[0053] S203: Compare the sensor features with preset sensor features to determine the type of sensor carried by the following vehicle. Specifically, compare the collected sensor features with preset sensor features in the sensor feature database, and determine the type of sensor carried by the following vehicle through image recognition or machine learning models.

[0054] In another embodiment, S101 may include the following steps:

[0055] S301: Information is collected in parallel using vehicle wireless communication technology and the target vehicle's rearward perception system (rearward camera or rearward lidar device). The collected information includes the sensor type, sensor appearance features, and / or point cloud reflection features broadcast by the vehicle.

[0056] S302: The sensor type broadcast by the following vehicle is determined to be the sensor type carried by the following vehicle. If the sensor type broadcast by the following vehicle is not collected through vehicle wireless communication technology, the sensor type carried by the following vehicle is determined based on the sensor appearance characteristics and / or point cloud reflection characteristics.

[0057] S303: If there is a conflict between the sensor type determined by the sensor appearance characteristics and point cloud reflection characteristics (i.e., the two recognition methods identify different sensor types), the final sensor type will be determined according to the preset judgment priority rules. The judgment priority rules include, but are not limited to: if one of the two judgment results has a high confidence level (e.g., shape matching degree or point cloud intensity reflection value exceeds the set threshold), then that result will be adopted; if both have a medium confidence level but the recognition results are different, then the image recognition result will be adopted first; if the two confidence levels are similar and conflict, then the most conservative taillight control parameters will be matched first, that is, more compatible PWM control parameters will be generated (e.g., frequency of 55Hz, duty cycle of 60%, infrared light source turned off) to ensure system compatibility and driving safety.

[0058] S102: Generate PWM control parameters based on sensor type.

[0059] In this embodiment, corresponding PWM control parameters can be generated based on the sensor type determined by the above method. The PWM control parameters may include the frequency of the PWM signal and the on / off state of the infrared light source, which are used to drive the taillights of the target vehicle to emit light, so as to optimize the perceptibility of the taillights under different sensors.

[0060] When the sensor type of the following vehicle is identified as millimeter-wave radar, a PWM modulation signal with a frequency of 1-5Hz is generated and the infrared light source is turned off. Millimeter-wave radar has low sensitivity to the light emission frequency of taillights, but in the frequency range of 1-5Hz, it is most stable in recognizing the echo signal of taillights, which helps the following vehicle to accurately judge the position and movement status of the vehicle in front.

[0061] When the sensor type of the following vehicle is identified as LiDAR, a PWM modulation signal with a frequency of 20±2Hz is generated and the infrared light source is turned off. LiDAR is quite sensitive to the modulation frequency of the taillights. The PWM signal frequency of 20±2Hz can form the clearest structural reflection features, which can improve the recognition stability of the taillights in the point cloud map.

[0062] When the sensor type of the following vehicle is identified as a camera, a PWM modulation signal with a frequency of 50-60Hz is generated, and an infrared light source with a wavelength of 850nm is turned on.

[0063] In some embodiments, the adaptive taillight control method may further include acquiring the ambient light intensity of the area behind the target vehicle. When the sensor type on the following vehicle is identified as a camera, when the light intensity is less than 100 lux, a PWM modulation signal with a frequency of 50-60 Hz is generated and an infrared light source with a wavelength of 850 nm is turned on; when the light intensity is greater than or equal to 100 lux, a PWM modulation signal with a frequency of 50-60 Hz is generated and the infrared light source is turned off.

[0064] In low-light environments such as at night, in tunnels, or on cloudy days (light intensity less than 100 lux), the camera's ability to recognize taillights decreases. Infrared light sources can be turned on to provide stable supplemental lighting for the taillights, improving image quality and contrast, making the taillights clearly visible in the image, thereby improving the camera's recognition rate and error tolerance. In daylight or high-light environments (light intensity greater than or equal to 100 lux), infrared light sources can be turned off to avoid overexposure or glare caused by light reflection, maintaining normal camera exposure. At the same time, turning on infrared light sources only when necessary can also significantly reduce energy consumption and heat generation.

[0065] To adapt to real-time changes in ambient light, a fixed sampling period (e.g., every 2 seconds) or a threshold for light change (e.g., a sudden change of more than 10 lux) can be set to trigger the recalculation of PWM control parameters and dynamically adjust the on / off state of the infrared light source to cope with highly dynamic lighting scenarios such as rapid entry into tunnels, sudden changes in street lighting, and entry and exit from shadow areas, thereby improving the real-time performance and adaptability of the infrared supplementary lighting strategy.

[0066] Furthermore, in real-world road environments, following vehicles may use a fusion solution of multiple perception systems (e.g., simultaneously equipped with cameras and millimeter-wave radar). Moreover, when multiple sensors are detected to coexist, the main control sensor type (e.g., camera as the primary sensor and millimeter-wave radar as the secondary sensor) can be selected based on a preset priority. Combined with two or more types of PWM parameter generation strategies, the optimal composite PWM control parameters can be generated, thereby achieving taillight compatibility control across perception systems.

[0067] S103: Control the taillights of the target vehicle to emit light according to the PWM control parameters.

[0068] In this embodiment, the PWM modulation signal and infrared light source control signal generated in step S102 can be input into the taillight control module to drive the taillight to work according to the set emission frequency and infrared state.

[0069] S104: Monitor whether the following vehicle has been changed to a new vehicle. If it is detected that the following vehicle has been changed to a new vehicle, then repeat S101 to S103.

[0070] During the continuous driving of the target vehicle, the unique identifier of the following vehicle (such as license plate, communication ID or image features) can be continuously monitored. When it is detected that the following vehicle has been replaced by a different vehicle (for example, a new vehicle inserts into the original following position), steps S101 to S103 are re-executed to re-identify the sensor type of the new following vehicle.

[0071] In one embodiment, the PWM control parameters may include the duty cycle and the spatial coverage of the taillight pattern, and the method may also include obtaining the relative distance between the following vehicle and the target vehicle.

[0072] Generating PWM control parameters based on sensor type may also include:

[0073] When the relative distance is less than or equal to 30 meters, a PWM modulation signal with a duty cycle of 80-100% is generated, and 80-100% of the programmable LED units in the taillight display area are lit to form a full-coverage pattern, providing a high-brightness and high-visibility warning effect, suitable for high-risk situations such as close following, braking or emergency stopping.

[0074] When the relative distance is greater than 30 meters and less than or equal to 100 meters, a PWM modulation signal with a duty cycle of 50-80% is generated, and 40-60% of the programmable LED units in the taillight display area are lit to form a medium-sized pattern, which reduces energy consumption and visual interference while ensuring sufficient recognition rate.

[0075] When the relative distance is greater than 100 meters, a PWM modulation signal with a duty cycle of 30-50% is generated, and 20-30% of the programmable LED units in the taillight display area are lit to form standardized warning symbols (such as triangles, horizontal bars, etc.), providing basic recognition functions and suitable for long-distance cruising and other scenarios.

[0076] In one embodiment, the PWM control parameters may include frequency fine-tuning values ​​and dynamic light effect forms of the taillight pattern, and the method may further include: acquiring the relative speed between the following vehicle and the target vehicle.

[0077] Generating PWM control parameters based on sensor type may also include:

[0078] When the relative speed is less than or equal to -10 m / s (indicating that the following vehicle is rapidly approaching the vehicle), a frequency fine-tuning value of 1-3 Hz is added to the frequency corresponding to the sensor type, making the taillight modulation frequency higher, thereby enhancing the signal's recognizability in the sensors (especially the camera), and controlling the taillight display area to perform a horizontal scanning light animation. This horizontal scanning light animation can rhythmically roll and emit light from left to right or from right to left, with a scanning cycle of 3-5 times / second, attracting the attention of following vehicles and enhancing the warning effect in the case of rapid approach.

[0079] When the relative speed is greater than -10 m / s and less than or equal to 0 m / s (indicating that the following vehicle is relatively stationary or slowly approaching the vehicle), the frequency corresponding to the sensor type is maintained, and the taillight display area is controlled to implement a breathing light effect. The brightness change cycle of the breathing light effect is 1-2 seconds, that is, the taillight brightness slowly increases and decreases within a 1-2 second cycle, creating a smooth and gentle visual rhythm, which is suitable for normal following scenarios such as cruise control, and helps to provide continuously identifiable but not dazzling taillight information.

[0080] When the relative speed is greater than 0 m / s (indicating that the following vehicle is gradually moving away from the vehicle), the frequency fine-tuning value is reduced by 0.5-1 Hz at the frequency corresponding to the sensor type, prioritizing energy saving and appropriately reducing the perception priority. The taillight display area is also switched to static pattern mode, which is suitable for low-risk or exit following scenarios.

[0081] In one embodiment, the method may further include: if the type of sensor carried by the following vehicle is not obtained, generating a PWM modulation signal with a frequency of 55Hz and a duty cycle of 60%, and turning off the infrared light source.

[0082] In practical applications, when the type of sensors on the following vehicle cannot be obtained (e.g., the following vehicle is not a smart assisted driving vehicle, the sensors are not activated, communication fails, or vision is obstructed), a PWM modulation signal with a frequency of 55Hz and a duty cycle of 60% can be generated to ensure that the light signal emitted by the taillights has strong visual recognition capabilities while remaining within the frequency range easily recognized by the camera perception system. This balances the perception requirements of both the driver's eye and the intelligent perception system, thereby improving the universal visibility of the taillights and adapting to a wider range of following targets, including ordinary vehicles without any perception equipment, enabling the widespread application of adaptive taillight systems in mixed traffic environments.

[0083] It should be understood that the same or corresponding information in the different embodiments described above can be referenced in relation to each other.

[0084] Please see Figure 3 , Figure 3This is a schematic diagram of the structure of a vehicle lighting controller motherboard disclosed in an embodiment of this application. The vehicle lighting controller motherboard includes: a host (100) and a remote controller (200); the host (100) is provided with a power supply module (1), an MCU main control module (2), a wireless receiving module (3), a multi-power output module (4), an indicator light module (5), a learning button module (6) and a microcontroller module (8). The wireless receiving module (3), the multi-power output module (4), the indicator light module (5), the learning button module (6) and the microcontroller module (8) are respectively connected to the MCU main control module (2), and the wireless receiving module (3) is communicatively connected to the remote controller (200). The multi-power output module (4) includes: multiple power output circuits that output different levels of current. The input terminal of each output circuit is connected to the output terminal of the MCU main control module (2), and the output terminal of each power output circuit is connected to an external functional device as an output channel; the external functional devices are low beam headlights, high beam headlights, horns, various pre-installed lights and ambient lights, etc.

[0085] The remote control (200) includes multiple transmit buttons corresponding to the number of power output circuits;

[0086] The learning button module (6) includes at least a learning button (61). By clicking the learning button (61), the recording channel is selected, so that each transmit button controls one or more output channels of the multi-power output module (4) to output the corresponding function mode through the code matching method, and controls the corresponding indicator light of the indicator module (5) to light up.

[0087] The microcontroller module (8) is used to execute the above adaptive taillight control method.

[0088] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process of the microcontroller module (8) described above can be referred to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0089] The MCU main control module (2) is equipped with: a function instruction generation unit for analyzing and generating corresponding control instructions according to the corresponding function mode, and a function response unit for responding to the control instructions of the function instruction generation unit to make a function mode. Specifically, the power supply module (1) is used to supply power to the host, with a normal operating voltage range of DC11.5V-35V and a maximum withstand voltage of DC110V; the power supply module (1) is connected to the charging module, which includes: a charging interface connected to a solar charger / power bank / car charger, and a lithium battery charging management unit that charges the built-in lithium battery with electricity from the charging interface; the host is also equipped with a voltage output from the power supply module (1) to convert the voltage to be supplied by the MCU main control module (2) to a stable 5V power supply voltage; the wireless receiving module (3) preferably has a receiving frequency of 433.92MHz and a receiving distance of ≥50 meters in open space.

[0090] As described above, this solution achieves a high degree of system integration by integrating the power supply module, MCU main control module, wireless receiving module, multi-power output module, indicator light module, and learning button module within the main unit. The multi-power output module provides multiple power output circuits with different current levels, enabling it to implement various functional modes based on the control commands from the MCU main control module. This makes control more flexible and easier to operate, meeting the lighting needs of different driving scenarios, such as overtaking, emergency calls, and daytime driving. The learning button module allows users to easily pair the transmit buttons on the remote control for quick access to specific lighting modes. Employing intelligent recognition and pairing technology, the learning button module ensures precise matching between each transmit button on the remote control and the multi-power output module on the main unit, improving system response speed and ensuring accurate transmission of control commands. Furthermore, users can freely set and adjust lighting modes according to their needs, achieving personalized and intelligent lighting control. The MCU main control module analyzes the indicator light patterns in real time and generates corresponding control commands to improve system lighting efficiency and reduce unnecessary energy consumption.

[0091] In some embodiments, the functional modes include:

[0092] Overtaking mode uses a specific lighting pattern to alert surrounding vehicles;

[0093] The horn function mode uses horn sound effects to issue warnings.

[0094] The SOS function mode sends out an emergency distress signal by flashing a continuous, bright light.

[0095] DRL mode provides continuous and stable light output, improving daytime driving safety;

[0096] The strobe function mode attracts attention by flashing lights rapidly and intensely, and is often used in emergency vehicles such as police cars and ambulances.

[0097] As mentioned above, the overtaking function mode alerts surrounding vehicles with a specific lighting pattern, allowing other drivers to quickly notice the impending overtaking maneuver and reducing the risk of traffic accidents caused by lane changes or overtaking. The horn function mode uses horn sounds to attract more attention in complex environments, thus avoiding potential dangers. The SOS function mode emits an emergency distress signal through continuous, intense flashing lights, quickly attracting the attention of surrounding vehicles and pedestrians in emergencies, buying valuable rescue time for the driver. The DRL function mode improves daytime driving safety. The strobe function mode quickly attracts the attention of surrounding vehicles and pedestrians, ensuring high visibility of the vehicle in various environments, contributing to improved driving safety and emergency response efficiency. In summary, the overtaking, horn, SOS, DRL, and strobe functions of the vehicle lighting controller motherboard allow a single controller motherboard to control all functions of the vehicle, including low beam headlights, high beam headlights, and horn, enhancing driving safety and the driving experience, and meeting the lighting needs of different driving environments and atmospheres.

[0098] like Figure 3 As shown, the host (100) also has a power-on control module (7), which has an ACC input terminal (71) connected to the car's ACC line. The power-on control module (7) is used to start normal operation when the car is detected to be ignited and to operate with low power consumption when the ACC line is not connected. Specifically, the host can only start working when the car key is turned on. When the ACC line is not connected, the static current of the entire host is less than 1mA, so as to effectively reduce the static loss of the car battery.

[0099] As shown in the figure, the multi-power output module (4) includes: two power output circuits with a current output of 30A, two power output circuits with a current output of 20A, and two power output circuits with a current output of 10A. Each output circuit is equipped with a MOS transistor controlled by the MCU main control module (2). In specific implementation, the multi-power output module (4) is composed of circuits such as "QP1-QP8" MOS transistors, and has a total of 6 independent control channels. Thus, through the above settings, the maximum load capacity of the host in this case is set to 30A*2; 20A*2; 10A*2, which makes the load power sufficient and large enough. The design of multi-level current output allows users to select the appropriate current level according to actual needs, thereby meeting different power needs. Through the 6 independent control channels composed of circuits such as "QP1-QP8" MOS transistors, users can realize independent control of each output circuit, which improves the flexibility and controllability of power output.

[0100] like Figure 3 As shown, the remote control (200) includes: a wireless tactile switch remote control, a wireless toggle switch remote control, or a wired toggle switch remote control. Thus, the wireless tactile switch remote control allows for simple touch operation to control the lighting system, eliminating the need for physical contact with the switch and improving operational convenience and flexibility. The wired toggle switch remote control allows users to switch between different lighting modes or functions by toggling the switch; the operation is intuitive and easy to understand. Although the wired toggle switch remote control is limited by cable length, it may provide a more stable and reliable operating experience in certain fixed or limited spaces. Different types of remote controls offer multiple operating methods, allowing users to choose the appropriate control method according to their preferences and habits. Furthermore, during the design process, good compatibility and interoperability between different types of remote controls and the vehicle lighting controller motherboard can be ensured, allowing users to freely switch between different remote controls to control the same lighting system without worrying about compatibility issues.

[0101] Please see Figure 4 , Figure 4 This is a schematic diagram of a power supply module disclosed in an embodiment of this application. The power supply module (1) includes a dual power input structure with the input terminal connected to the automotive ACC power supply and the constant power VCC. The voltage path is automatically selected by diodes D1 and D2, and then a DC power supply of 7.5V is output through a voltage regulator circuit for use by the subsequent modules.

[0102] Please see Figure 5 , Figure 5 This is a schematic diagram of the structure of a power feedback module disclosed in an embodiment of this application. The power supply module (1) may also include a power feedback module. The input terminal of the power feedback module is a 7.5V DC power supply, and the output terminal is connected to the control chip through a feedback network (FB1, FB2) to regulate the stability of the output voltage. It is grounded through VSS to form a stable working voltage base.

[0103] Please see Figure 6 , Figure 6 This is a schematic diagram of a post-stage voltage regulator module disclosed in an embodiment of this application. In order to provide a stable power supply to the MCU main control module, the power supply module (1) may also include a post-stage voltage regulator module, which has a 7.5V input from the front stage and a stable 5V output to supply power to the MCU and its peripheral functional modules (such as indicator light module (5), communication interface module, etc.).

[0104] Please see Figure 7 , Figure 7This is a schematic diagram of the structure of a communication interface module disclosed in an embodiment of this application. The communication interface module includes a transmit (TX) port, a receive (RX) port and a 5V power supply pin, which are used to communicate and interact with the microcontroller module (8) to realize data uploading and control command issuance.

[0105] Please see Figure 8 , Figure 8 This is a schematic diagram of the structure of an MCU main control module disclosed in an embodiment of this application. The MCU main control module (2) is the core of the vehicle controller. Its input terminals are connected to RTN, KEY button signals, AD_VIN analog voltage input, and serial port TX / RX, etc., and its output terminals are connected to OUT1 to OUT6 control signal channels and LED status indicator control signals, which are used to output corresponding functional actions.

[0106] Please see Figure 9 , Figure 9 This is a schematic diagram of an input voltage detection module disclosed in an embodiment of this application. To ensure the safe and stable operation of the system, the host may also include an input voltage detection module, which acquires the input voltage signal through AD_VIN. If the detected voltage is lower than 11.3V or higher than 33.5V, it will automatically enter the protection state to prevent damage to the system due to overvoltage or undervoltage.

[0107] Please see Figure 10 , Figure 10 This is a schematic diagram of a multi-power output module disclosed in an embodiment of this application. The multi-power output module (4) is composed of transistors Q1 to Q14 and has 6 independent output circuit channels, including two 30A, two 20A, and two 10A output capabilities. Each transistor is controlled by the output terminal of the MCU main control module (2), and the corresponding port can be controlled to open or close according to the signal issued by the MCU main control module (2), thereby realizing the control of the load.

[0108] Please see Figure 11 , Figure 11 This is a schematic diagram of the structure of a wireless receiving module disclosed in an embodiment of this application. The wireless receiving module (3) is a 433MHz wireless radio frequency circuit used to receive control commands wirelessly sent by the remote controller (200) to the host (100). The receiving end of the wireless receiving module (3) is connected to a 5V power supply, and the output end RTN is connected to the MCU main control module (2) to receive the wireless control signals sent by the remote controller (200) and transmit them to the MCU main control module (2).

[0109] Please see Figure 12 , Figure 12This is a schematic diagram of the structure of an indicator module disclosed in an embodiment of this application. The indicator module (5) is provided with multiple LED output channels, which correspond to LED1 to LED6 status indicator lights, respectively, to reflect the current working status and functional mode of the channel in real time, thereby enhancing the user's intuitive understanding of the system status.

[0110] Please see Figure 13 , Figure 13 This is a schematic diagram of a multi-channel power output port module disclosed in an embodiment of this application. The multi-channel power output module (4) may also include a multi-channel power output port module. Each output control circuit in the multi-channel power output port module is provided with output terminals O1 to O6. Users can connect different external lighting loads to the corresponding ports according to actual usage needs, such as low beam lamps, high beam lamps, ambient lights, horns, etc., to achieve different power output functions.

[0111] Please see Figure 14 , Figure 14 This is a schematic diagram of the structure of an encoding control module disclosed in an embodiment of this application. The encoding control module, serving as the main control module of the remote control (200), includes an encoding chip U7 and multiple sets of DIP switches K1 to K6 connected to it. The user can set the control combination logic of the remote control by toggling each switch. The encoding chip U7 collects the level states of each DIP switch and converts them into control signals with a unified encoding format, outputting them from its output pin (e.g., pin 1 / 2) to the wireless transmission module (e.g., pin 2). Figure 15 As shown, this module (as illustrated) enables the digital encoding and transmission of user operation intentions. Powered by a battery via pins BAT+ and GND, it also supports efficient logic interaction with the main control circuit. Through this module, the MCU main control module can execute corresponding channel control commands based on the received remote control encoded signals, ensuring the accuracy and timeliness of command transmission.

[0112] Please see Figure 15 , Figure 15 This is a schematic diagram of a toggle switch module disclosed in an embodiment of this application. The remote control (200) may also include a toggle switch module, which has six independent toggle switches, each corresponding to a control channel, for users to manually switch between different lighting modes or function channels. Each toggle switch has a corresponding background LED indicator; when the switch is turned to the "ON" state, the corresponding indicator light illuminates, providing intuitive feedback on whether the current channel is active. This module not only supports basic lighting control but also enhances the visibility and feedback of the operation, making it particularly suitable for nighttime operation scenarios.

[0113] Please see Figure 16 , Figure 16This is a schematic diagram of a wireless transmission module disclosed in an embodiment of this application. The remote controller (200) may also include a wireless transmission module, which is a 433MHz wireless radio frequency circuit used by the remote controller (200) to wirelessly send control commands to the host (100). The wireless transmission module includes a transmission chip U6, which, together with an external oscillator, filter capacitor, and transmission matching network (composed of L and C components), forms a complete radio frequency transmission path, capable of modulating and transmitting encoded control signals at a stable frequency. The module establishes a connection with the transmission path in the air through a PCB antenna or an external antenna to achieve reliable long-distance communication.

[0114] Please see Figure 17 , Figure 17 This is a schematic diagram of a charging management module disclosed in an embodiment of this application. The remote control (200) may also include a charging management module. The charging management module performs intelligent charging control of the remote control's built-in lithium battery through a charging management chip. Its input terminal VIN can be connected to an external charging source such as a USB port or power adapter, and its output terminal is connected to the battery BAT+. Precise voltage and current regulation is achieved through a resistor and capacitor network, and it has safety functions such as short-circuit protection and overcharge protection to ensure efficient, safe, and stable battery charging.

[0115] Please see Figure 18 , Figure 18 This is a schematic diagram of a charging status indicator module disclosed in an embodiment of this application. The remote control (200) may also include a charging status indicator module. The charging status indicator module is combined with the control circuit through an LED status indicator to provide visual feedback during the charging process of the remote control. When the lithium battery is charging, the LED is constantly lit to indicate "charging"; when charging is complete or enters a maintenance state, the LED is off or flashes to indicate this. This design helps users to keep track of the remote control's battery level at any time, improving ease of use.

[0116] Please see Figure 19 , Figure 19 This is a schematic diagram of a TYPE-C interface module disclosed in an embodiment of this application. The TYPE-C interface module is located inside the remote control (200) and is used to provide charging input for the built-in lithium battery. The module includes a standard Type-C socket K8, whose VBUS pin is connected to the charging voltage input (VEN) and connected to the control chip or power supply circuit through current-limiting resistors R116 and R117. GND1 and GND2 are ground interfaces to ensure the power supply loop is closed. CC1 and CC2 are communication pins used for USB PD or standard Type-C communication identification to ensure that the inserted device correctly identifies the power supply protocol. Through this module, users can use a universal Type-C cable to quickly, safely, and in a standardized manner charge the remote control, improving the compatibility and convenience of the device.

[0117] Furthermore, the functional modules and / or units in the various embodiments of this application can be integrated into one processing unit, or each module and / or unit can exist physically separately, or two or more modules and / or units can be integrated into one unit. The integrated modules and / or units described above can be implemented in hardware or in software functionality.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An adaptive taillight control method, characterized in that, Includes the following steps: S101: Obtain the sensor types carried by following vehicles behind the target vehicle; S102: Generate PWM control parameters according to the sensor type, the PWM control parameters including frequency and infrared light source on / off state; S103: Control the taillights of the target vehicle to emit light according to the PWM control parameters; S104: Monitor whether the following vehicle has been replaced by a new vehicle. If it is detected that the following vehicle has been replaced by a new vehicle, then repeat S101 to S103. S101 includes: The sensor types broadcast by the following vehicle are received via vehicle wireless communication technology, including millimeter-wave radar, lidar, and cameras; If the sensor type is not received via vehicle wireless communication technology within a preset time delay, the sensor characteristics of the following vehicle are collected by the rear-view camera or lidar of the target vehicle. The sensor features are compared with preset sensor features to determine the type of sensor carried by the following vehicle; The step of generating PWM control parameters based on the sensor type includes: When the sensor type of the following vehicle is millimeter-wave radar, a PWM modulation signal with a frequency of 1-5Hz is generated, and the infrared light source is turned off; When the sensor type carried by the following vehicle is a lidar, a PWM modulation signal with a frequency of 20±2Hz is generated, and the infrared light source is turned off; When the sensor type of the following vehicle is a camera, a PWM modulation signal with a frequency of 50-60Hz is generated, and an infrared light source with a wavelength of 850nm is turned on. The PWM control parameters also include duty cycle and spatial coverage of the taillight pattern, and the method further includes: Obtain the relative distance between the following vehicle and the target vehicle; The step of generating PWM control parameters based on the sensor type further includes: When the relative distance is less than or equal to 30 meters, a PWM modulation signal with a duty cycle of 80-100% is generated, and 80-100% of the programmable LED units in the taillight display area are lit to form a full-coverage pattern. When the relative distance is greater than 30 meters and less than or equal to 100 meters, a PWM modulation signal with a duty cycle of 50-80% is generated, and 40-60% of the programmable LED units in the taillight display area are lit to form a medium-sized pattern. When the relative distance is greater than 100 meters, a PWM modulation signal with a duty cycle of 30-50% is generated, and 20-30% of the programmable LED units in the taillight display area are controlled to light up to form a standardized warning symbol.

2. The method according to claim 1, characterized in that, The PWM control parameters include frequency fine-tuning values ​​and the dynamic light effect form of the taillight pattern; the method further includes: Obtain the relative speed between the following vehicle and the target vehicle; The step of generating PWM control parameters based on the sensor type further includes: When the relative speed is less than or equal to -10 m / s, a frequency fine-tuning value of 1-3 Hz is added to the frequency corresponding to the sensor type, and the taillight display area is controlled to perform a horizontal scanning light animation. The scanning cycle of the horizontal scanning light animation is 3-5 times / second. When the relative speed is greater than -10 m / s and less than or equal to 0 m / s, the frequency corresponding to the sensor type is maintained, and the taillight display area is controlled to perform a breathing light effect, the brightness change period of the breathing light effect is 1-2 seconds; When the relative speed is greater than 0 m / s, the frequency fine-tuning value is reduced by 0.5-1 Hz at the frequency corresponding to the sensor type, and the taillight display area is switched to static pattern mode.

3. The method according to claim 1, characterized in that, The method further includes: If the sensor type of the following vehicle is not obtained, a PWM modulation signal with a frequency of 55Hz and a duty cycle of 60% is generated, and the infrared light source is turned off.

4. A vehicle-mounted lighting controller motherboard, characterized in that, The system includes a main unit and a remote control. The main unit is equipped with a power supply module, an MCU main control module, a wireless receiving module, a multi-power output module, an indicator light module, a learning button module, and a microcontroller control module. The wireless receiving module, the multi-power output module, the indicator light module, the learning button module, and the microcontroller control module are respectively connected to the MCU main control module. The wireless receiving module is communicatively connected to the remote control. The multi-power output module includes multiple power output circuits that output different levels of current. The input terminal of each output circuit is connected to the output terminal of the MCU main control module, and the output terminal of each power output circuit is connected to an external functional device. The remote control includes multiple transmit buttons corresponding to the number of power output circuits; The learning button module includes at least a learning button. By clicking the learning button, a code recording channel is selected, so that each transmit button controls one or more output channels of the multi-power output module to output the corresponding function mode through code pairing, and controls the corresponding indicator light of the indicator module to light up. The microcontroller control module is used to execute the adaptive taillight control method according to any one of claims 1-3.

5. The vehicle lighting controller motherboard according to claim 4, characterized in that, The functional modes include: Overtaking function mode, which alerts surrounding vehicles through specific corresponding function modes; The horn function mode uses horn sound effects to issue warnings. The SOS function mode sends out an emergency distress signal by flashing a continuous, bright light. DRL function mode provides continuous and stable light output, improving daytime driving safety; that is, daylight lamp function. The strobe function mode attracts attention by flashing lights rapidly and intensely, and is used in police cars and ambulances.

6. The vehicle lighting controller motherboard according to claim 5, characterized in that, The host also includes a power-on control module, which has an ACC input terminal connected to the car's ACC line. The power-on control module is used to start normal operation when the car is detected to be ignited, and to operate with low power consumption when the ACC line is not connected.

7. The vehicle lighting controller motherboard according to claim 5, characterized in that, The multi-power output module includes: two power output circuits that output 30A current, two power output circuits that output 20A current, and two power output circuits that output 10A current.

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