Automobile lamp knob switch mechanism with state feedback

Abstract

The invention belongs to the technical field of automobile lamp knob switches, and particularly relates to an automobile lamp knob switch mechanism with state feedback, which comprises a knob switch main body, a knob assembly and a touch screen arranged at the end part of the knob assembly, firstly, high-frequency operation switches related to a steering wheel, such as a steering lamp switch and a meeting flashing lamp switch, and a mode operation switch for setting a system state at a low frequency are separately designed, the high-frequency operation switches remain the original design and are still arranged at the steering wheel, and low-frequency complex mode setting and state feedback are given to a more intelligent central control knob with a stronger interaction feeling; not only is the operation safety of the high-frequency operation switch related to the steering wheel ensured, but also the pain points of unclear identification and lack of confirmation feeling of a traditional light mode switch can be effectively solved through integration and feedback of the central control knob, a driver can confirm the operation result and the system state without moving away the sight, and the operation efficiency is improved. And the driving risk caused by misjudgment of the light state is greatly reduced.

Description

Technical Field

[0001] This invention belongs to the technical field of automotive headlight knob switches, specifically relating to an automotive headlight knob switch mechanism with status feedback. Background Technology

[0002] With the continuous improvement of automotive electronics and intelligence, in-vehicle human-machine interfaces are rapidly developing towards integration, intelligence and multimodality. As one of the core functions to ensure driving safety, the design of the control switch of the vehicle lighting control system directly affects the driver's ease of operation, safety and interactive experience.

[0003] Traditional mechanical switches are generally located below the steering wheel, directly connecting or disconnecting the headlight circuit through physical contacts, or sending limited gear signals through a simple encoder. Their installation position is mainly determined by the convenience of direct connection between mechanical linkages and wiring harnesses. Their physical position is constrained by the routing of the wiring harness, and they lack effective feedback on the real-time operating status of the headlight system. Drivers usually need to judge through dashboard indicator lights or external observation. In complex lighting conditions or when attention is focused on the road, there is a risk of information delay or misjudgment.

[0004] To address the aforementioned issues, this application proposes a rotary switch mechanism for automotive headlights with status feedback. Summary of the Invention

[0005] This invention provides a car headlight knob switch mechanism with status feedback, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a rotary switch mechanism for automotive headlights with status feedback, comprising a rotary switch body, a rotary assembly, and a touch screen disposed at the end of the rotary assembly. A Hall sensor module is provided on one side of the inner cavity of the rotary switch body. One end of the Hall sensor module is provided with a thin-film pressure sensor, and the other end is connected to the rotary assembly. A visual feedback unit and a tactile feedback unit are respectively provided on the rotary switch body and the rotary assembly. It also includes an intelligent control unit, which pre-stores execution control logic, feedback decision logic, and anti-accidental touch decision logic. This intelligent control unit is electrically connected to a Hall effect sensor module, a thin-film pressure sensor, a vehicle communication bus, and a headlight drive module. It is used to generate headlight control commands based on operating signals and to generate feedback control commands based on headlight status information received from the vehicle communication bus or the headlight drive module. Its operation method includes the following steps: S1: The intelligent control unit detects the operation of the knob assembly in real time through the Hall sensor module and the thin-film pressure sensor, and generates an operation signal; S2: Analyze the detected and collected operation signals, generate corresponding vehicle light control commands, and send them through the vehicle communication bus; S3: The intelligent control unit receives real-time status information of the vehicle lighting system via the vehicle communication bus or direct feedback line; S4: The intelligent control unit generates corresponding multi-mode feedback commands based on the current headlight status information, historical status, and received operation signals; S5: The visual feedback unit and tactile feedback unit execute multimodal feedback commands, outputting feedback to the driver through visual and tactile means.

[0007] Preferably, the rotation positions of the knob assembly are sequentially set to off, automatic, parking light, low beam, and high beam. Each position has a corresponding position indicator with light. When rotated to different positions, the brightness of the corresponding position indicator turns on, and the visual feedback unit of the corresponding position displays different light colors for visual feedback. The tactile feedback unit simultaneously triggers tactile feedback, producing a short, crisp simulated click vibration.

[0008] Preferably, the main body of the rotary switch has an arc-shaped limiting groove at its end, and a limiting slider is fixedly provided on the outer side of one end of the rotary assembly. The limiting slider passes through the arc-shaped limiting groove and is used to limit the rotary assembly so that the rotary assembly can only rotate within a specified angle. A gap is left between the limiting slider and the arc-shaped limiting groove to allow the rotary assembly to move longitudinally to complete the pressing operation of the membrane pressure sensor.

[0009] Preferably, the Hall sensor module includes a Hall sensor, the end of which is provided with a rotating shaft and an annular assembly, a damping bearing is provided between the rotating shaft and the annular assembly, a guide slide is fixedly provided at the end of the Hall sensor away from the rotating shaft, and one end of the guide slide slide is slidably inserted into the knob switch body, a return spring is sleeved on the outside of the guide slide, and the two ends of the return spring are respectively connected to the knob switch body and the Hall sensor, for resetting the knob assembly after axial pressing.

[0010] Preferably, the thin-film pressure sensor presets two voltage thresholds to distinguish and trigger different vehicle lighting control functions, including a fog light switching function corresponding to the first pressure level and a headlight delay-off function corresponding to the second pressure level. The control method includes the following steps: S101. Detect the axial pressing operation on the knob assembly and identify its pressing force. S102. The intelligent control unit reads the voltage value detected by the membrane pressure sensor and compares it with two preset voltage thresholds. S103. When the pressure value is greater than the first voltage threshold when lightly pressed, the fog light turning-on command is triggered, and the haptic feedback unit is simultaneously controlled to generate a short, crisp click vibration, and the visual feedback unit is controlled to turn on the corresponding color of visual feedback light. S104. When the pressure value is greater than the second voltage threshold when pressed hard, the timed lighting turn-on command is triggered, the tactile feedback unit is controlled to generate a longer and stronger vibration feedback, and the visual feedback unit is simultaneously controlled to turn on the corresponding color visual feedback light. S105. Pressing the knob assembly lightly or firmly for 3-5 seconds will trigger the command to turn off the fog lights and the command to turn off the timed lighting, respectively, and can control the fog lights and timed lighting functions to be turned off separately.

[0011] Preferably, a valid pressing operation is determined only when the pressure value exceeds a certain threshold and is maintained for 1-2 seconds, and the corresponding instruction is triggered. When the knob component is pressed hard to trigger the instruction to turn on the timed lighting, the instruction to turn on the fog lights will not be triggered even if the pressure value is greater than the first voltage threshold.

[0012] Preferably, the visual feedback unit includes an arc-shaped mounting groove formed on the main body of the rotary switch, and a light-transmitting panel and a variable light LED are respectively provided on the inner cavity at the end of the arc-shaped mounting groove and on one side of the inner cavity; The tactile feedback unit includes an annular slot within the knob assembly, and miniature vibration motors are equidistantly arranged within the annular slot.

[0013] Preferably, the anti-mistouch decision logic pre-stored in the intelligent control unit sets the minimum rotation angle to ±10 degrees and the dwell confirmation time to 2 milliseconds. Only when the driver rotates the knob component more than 10 degrees and holds it for 2 seconds will the intelligent control unit determine that the driver intends to switch gears.

[0014] Preferably, the anti-accidental touch decision logic pre-stored in the intelligent control unit executes the following steps to achieve the anti-accidental touch operation: a. Continuously read the continuous angle change signal output by the Hall sensor module; b. Perform digital filtering on the continuous angle change signal, and calculate its continuous angle change amount and final dwell time; c. When the continuous angle change exceeds the preset threshold of 10 degrees and remains for 2 seconds, it is determined to be a valid manual rotation operation; d. Map continuous angle values ​​to several discrete logic positions; e. The corresponding headlight control command is generated only after the knob assembly has remained stably within the angle range corresponding to a certain logic position for more than 2 seconds for a preset time.

[0015] Preferably, in step S4, when the vehicle lights are faulty, the generated feedback command has the highest priority, and the intensity of the tactile feedback and the prominence of the visual feedback are set to be higher than the feedback under normal conditions. The vehicle light status information includes the vehicle light switch status, current lighting mode, load conditions, and fault diagnosis information. The touch screen can be used to display the vehicle light status information.

[0016] Compared with the prior art, the beneficial effects of the present invention are: Firstly, the high-frequency operation switches related to the steering wheel, such as the turn signal switch and the oncoming traffic flashing light switch, are designed separately from the low-frequency mode operation switches that set the system status. The high-frequency operation switches retain their original design and are still located on the steering wheel. The complex low-frequency mode settings and status feedback are handled by the more intelligent and interactive central control knob. This not only ensures the operational safety of the high-frequency operation switches related to the steering wheel, but also effectively solves the pain points of unclear markings and lack of confirmation in traditional lighting mode switches through the integration and feedback of the central control knob. The driver can confirm the operation results and system status without taking their eyes off the road, which greatly reduces the driving risks caused by misjudging the lighting status.

[0017] The intelligent control unit integrates execution control logic, feedback decision logic, and anti-accidental touch decision logic. It can generate headlight control commands based on operation signals and generate feedback control commands based on headlight status information received from the vehicle communication bus or headlight driver module. This transforms the rotary switch from a passive actuator into an intelligent interactive node with preliminary judgment capabilities. Furthermore, the intelligent control unit can receive and process status information from the headlight driver module and bus, such as load conditions and fault codes. This information is not only used for feedback but also instantly informs the driver through preset feedback modes, facilitating timely maintenance. It can also provide data support for potential pre-diagnosis and after-sales maintenance. Through the integrated innovation of hardware and the deep fusion of intelligent software algorithms, it not only solves the pain points of traditional headlight switches in terms of status feedback, accidental touch protection, functional integration, and interactive experience but also achieves a comprehensive improvement in safety, practicality, aesthetics, and future adaptability, aligning with the development prospects of new energy vehicles.

[0018] The rotation and pressing mechanisms have a clear logical division of labor: rotation switches the main lighting mode, while pressing triggers auxiliary functions. A thin-film pressure sensor identifies different pressing pressure levels, enabling a single physical control to integrate multiple lighting functions. This simplifies the center console layout, reduces the number of physical buttons, and aligns with the minimalist and intelligent design trends in new energy vehicle interiors. Users don't need to navigate through multi-layered menus on the central control screen; a single, clear press on the knob component is all it takes to trigger or deactivate the function. This operational logic perfectly aligns with the blind operation requirements and rapid interaction principles in driving scenarios, transforming complex timing settings into a natural force command with zero learning cost. Furthermore, the operation is accompanied by clear tactile and visual confirmations, making human-machine interaction both efficient and reliable. This feature automatically maintains headlight illumination for a period after the vehicle is turned off and locked, directly addressing a pain point for users in specific dimly lit scenarios, such as illuminating the way home at night. The system illuminates the path from the car to the front door, preventing bumps and increasing safety. It also provides stable temporary lighting for short-term outdoor activities or when temporarily retrieving items. It goes beyond basic lighting functions, becoming a proactive and caring safety service that significantly enhances the thoughtfulness and convenience of the driving experience. Moreover, each time the lights are switched, the system proactively and in real-time provides feedback to the driver on the actual working status of the lighting system through both visual and tactile channels. This avoids the delays and uncertainties that would otherwise require the driver to look at the dashboard or rely on external observations. Especially in complex or emergency road conditions, it strengthens the closed loop of human-machine interaction and greatly improves driving safety. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a car headlight rotary switch mechanism with status feedback according to the present invention. Figure 2 This is a first-view cross-sectional view of a car headlight rotary switch mechanism with status feedback according to the present invention. Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the diagram; Figure 4 This is a second-view cross-sectional view of a car headlight rotary switch mechanism with status feedback according to the present invention. Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B in the diagram; Figure 6 This is a schematic diagram of a vehicle headlight control system with a status feedback mechanism for a vehicle headlight rotary switch according to the present invention. Figure 7 This is a schematic diagram of the overall operation process of a car headlight rotary switch mechanism with status feedback according to the present invention.

[0020] In the picture: 1. Main body of the rotary switch; 2. Knob assembly; 3. Touchscreen; 4. Hall effect sensor module; 401. Hall effect sensor; 402. Rotating shaft; 403. Ring assembly; 404. Damping bearing; 405. Guide slide rod; 406. Return spring; 5. Thin-film pressure sensor; 6. Visual feedback unit; 601. Arc-shaped mounting groove; 602. Light-transmitting panel; 603. Variable light LED; 7. Tactile feedback unit; 701. Annular slot; 702. Miniature vibration motor; 9. Arc-shaped limiting slide groove; 10. Limit slider. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Examples, such as Figure 1-7 As shown, a car headlight knob switch mechanism with status feedback includes a knob switch body 1, a knob assembly 2, and a touch screen 3 disposed at the end of the knob assembly 2. The knob switch body 1 is characterized by having a Hall sensor module 4 disposed on one side of its inner cavity, a thin film pressure sensor 5 disposed at one end of the Hall sensor module 4 and the other end connected to the knob assembly 2, and a visual feedback unit 6 and a tactile feedback unit 7 disposed on the knob switch body 1 and the knob assembly 2, respectively. It also includes an intelligent control unit, which pre-stores execution control logic, feedback decision logic, and anti-accidental touch decision logic. This intelligent control unit is electrically connected to the Hall sensor module 4, the thin-film pressure sensor 5, the vehicle communication bus, and the headlight drive module. It is used to generate headlight control commands based on operation signals and to generate feedback control commands based on headlight status information received from the vehicle communication bus or the headlight drive module. Its operation method includes the following steps: S1: The intelligent control unit detects the operation of the knob assembly 2 in real time through the Hall sensor module 4 and the thin film pressure sensor 5, and generates an operation signal; S2: Analyze the detected and collected operation signals, generate corresponding vehicle light control commands, and send them through the vehicle communication bus; S3: The intelligent control unit receives real-time status information of the vehicle lighting system via the vehicle communication bus or direct feedback line; S4: The intelligent control unit generates corresponding multi-mode feedback commands based on the current headlight status information, historical status, and received operation signals; S5: The visual feedback unit 6 and the tactile feedback unit 7 execute multimodal feedback commands, outputting feedback to the driver through visual and tactile means.

[0023] In this implementation plan: First, the high-frequency operation switches related to the steering wheel, such as the turn signal switch and the oncoming traffic flashing light switch, are designed separately from the low-frequency mode operation switches that set the system status. The high-frequency operation switches retain their original design and are still located on the steering wheel. The complex low-frequency mode settings and status feedback are handled by the more intelligent and interactive central control knob. This not only ensures the operational safety of the high-frequency operation switches related to the steering wheel, but also effectively solves the pain points of unclear markings and lack of confirmation in traditional lighting mode switches through the integration and feedback of the central control knob. The driver can confirm the operation results and system status without taking their eyes off the road, which greatly reduces the driving risks caused by misjudging the lighting status.

[0024] Furthermore: In an optional embodiment, the rotation positions of the knob assembly 2 are sequentially set to off, automatic, parking lights, low beam headlights, and high beam headlights. Each position has a corresponding position indicator with light. When rotated to different positions, the brightness of the corresponding position indicator turns on, and the visual feedback unit 6 of the corresponding position presents different light colors for visual feedback. The tactile feedback unit 7 simultaneously triggers tactile feedback, generating a short, crisp simulated click vibration.

[0025] In this embodiment, the visual feedback unit 6 and the tactile feedback unit 7 can actively provide real-time feedback to the driver on the actual working status of the vehicle lighting system, avoiding the delay and uncertainty caused by the driver having to be distracted by checking the dashboard or relying on external observation. Especially in complex or emergency road conditions, this strengthens the closed loop of human-computer interaction and greatly improves driving safety.

[0026] In an optional embodiment, the knob switch body 1 has an arc-shaped limiting groove 9 at one end, and a limiting slider 10 is fixedly provided on the outer side of one end of the knob assembly 2. The limiting slider 10 passes through the arc-shaped limiting groove 9 and is used to limit the knob assembly 2 so that the knob assembly 2 can only rotate within a specified angle. A gap is left between the limiting slider 10 and the arc-shaped limiting groove 9 to allow the knob assembly 2 to move longitudinally to complete the pressing operation of the membrane pressure sensor 5.

[0027] In an optional embodiment, the Hall sensor module 4 includes a Hall sensor 401. The Hall sensor 401 has a rotating shaft 402 and an annular sleeve 403 at its end. A damping bearing 404 is provided between the rotating shaft 402 and the annular sleeve 403. A guide slide rod 405 is fixedly provided at the end of the Hall sensor 401 away from the rotating shaft 402. One end of the guide slide rod 405 slides through the knob switch body 1. A reset spring 406 is sleeved on the outside of the guide slide rod 405. The two ends of the reset spring 406 are respectively connected to the knob switch body 1 and the Hall sensor 401, and are used to reset the knob assembly 2 after axial pressing.

[0028] In this embodiment: the Hall sensor 401 can be reset after being pressed by the reset spring 406, and the Hall sensor 401 can be guided and limited by the guide slide 405, so that the Hall sensor 401 can be stably pressed longitudinally and will not rotate when the knob assembly 2 is rotated. Moreover, compared with traditional potentiometers, this type of sensor has no mechanical contact wear, has a longer life and a smoother feel.

[0029] In an optional embodiment, the thin-film pressure sensor 5 presets two voltage thresholds to distinguish and trigger different vehicle lighting control functions, including a fog light switching function corresponding to the first pressure level and a headlight delay-off function corresponding to the second pressure level. The control method includes the following steps: S101. Detect the axial pressing operation on the knob assembly 2 and identify its pressing force. S102. The intelligent control unit reads the voltage value and compares it with two preset voltage thresholds; S103. When the pressure value is greater than the first voltage threshold when lightly pressed, the fog light turning-on command is triggered, and the haptic feedback unit 7 is controlled to generate a short, crisp click vibration, and the visual feedback unit 6 is controlled to turn on the corresponding color visual feedback light. S104. When the pressure value is greater than the second voltage threshold when pressed hard, the timed lighting turn-on command is triggered, and the tactile feedback unit 7 is controlled to generate a longer and stronger vibration feedback, and the visual feedback unit 6 is simultaneously controlled to turn on the corresponding color visual feedback light. S105. Pressing the knob component 2 lightly or firmly for 3-5 seconds can trigger the command to turn off the fog lights and the command to turn off the timed lighting, respectively, and can control the fog lights and timed lighting functions to be turned off separately.

[0030] In this embodiment, the logic of rotation and pressing is clearly defined. Rotation switches the main lighting mode, while pressing triggers auxiliary extension functions. The thin-film pressure sensor 5 identifies different pressing pressure levels, achieving integrated control of multiple vehicle lighting functions with a single physical control. This simplifies the center console layout, reduces the number of physical buttons, and aligns with the minimalist and intelligent design trends of new energy vehicle interiors. Users do not need to navigate through multi-layered menus on the center screen; a single, clear press on the knob component 2 is sufficient to directly trigger or deactivate the function. This operational logic highly aligns with the blind operation requirements and rapid interaction principles in driving scenarios, transforming complex timing settings into a natural force command with zero learning cost. Furthermore, the operation process is accompanied by clear tactile and visual confirmations, making human-computer interaction both efficient and reliable. This function enables… After the vehicle is turned off and locked, it can automatically maintain the headlights for a period of time. This directly solves the pain point for users in certain dimly lit scenarios. For example, when returning home at night, the headlights can illuminate the path from the parking spot to the front door, avoiding bumps and increasing safety. Or, when temporarily retrieving items or engaging in short outdoor activities, it can provide stable temporary area lighting. It goes beyond basic lighting functions and becomes a proactive and caring safety service, significantly improving the thoughtfulness and convenience of the driving experience. Moreover, each time the lights are switched, the actual working status of the headlight system is actively and in real time fed back to the driver through both visual and tactile channels. This avoids the delay and uncertainty that the driver has to look at the dashboard or rely on external observation. Especially in complex or emergency road conditions, it strengthens the closed loop of human-machine interaction and greatly improves driving safety.

[0031] Furthermore: In an optional embodiment, a valid pressing operation is determined only when the pressure value exceeds a certain threshold and is maintained for 1-2 seconds, and the corresponding instruction is triggered. When the knob component 2 is pressed hard to trigger the instruction to turn on the timed lighting, the instruction to turn on the fog lights will not be triggered even if the pressure value is greater than the first voltage threshold.

[0032] In this embodiment, by setting up a false touch program, a single physical control can be used to integrate and control multiple vehicle light functions, so that there is no conflict between the various pressing commands and the false touch operation can be effectively avoided.

[0033] In an optional embodiment, the visual feedback unit 6 includes an arc-shaped mounting groove 601 formed on the knob switch body 1, and a light-transmitting panel 602 and a variable light LED lamp 603 are respectively provided on the inner cavity at the end of the arc-shaped mounting groove 601 and one side of the inner cavity. The tactile feedback unit 7 includes an annular groove 701 formed in the knob assembly 2, and miniature vibration motors 702 are equidistantly arranged in the annular groove 701.

[0034] In this embodiment, by setting up visual feedback unit 6 and tactile feedback unit 7, each time the lights are switched, the actual working status of the vehicle lighting system is actively and in real time fed back to the driver through both visual and tactile channels. This avoids the delay and uncertainty caused by the driver having to look at the instrument panel or rely on external observation. Especially in complex or emergency road conditions, this strengthens the closed loop of human-computer interaction and greatly improves driving safety.

[0035] In an optional embodiment, the anti-mistouch decision logic pre-stored in the intelligent control unit sets the minimum rotation angle to ±10 degrees and the dwell confirmation time to 2 milliseconds. Only when the driver rotates the knob component 2 more than 10 degrees and holds it for 2 seconds will the intelligent control unit determine that the driver intends to switch gears.

[0036] In this embodiment, by setting the anti-accidental touch decision logic, not only can the possibility of accidental touch be effectively reduced, but also the triggering of the gears along the way when switching gears across regions can be avoided, causing unnecessary flickering and shortening the lifespan of the headlights. For example, when switching from the parking lights to the high beams, the low beams will be crossed. Through the design of the above-mentioned anti-accidental touch decision logic, the low beams will not be turned on when crossing the low beams, which can reduce unnecessary flickering.

[0037] In an optional embodiment, the anti-accidental touch decision logic pre-stored in the intelligent control unit executes the following steps to implement the anti-accidental touch operation: a. Continuously read the continuous angle change signal output by Hall sensor module 4; b. Perform digital filtering on the continuous angle change signal and calculate its continuous angle change amount and final dwell time; c. When the continuous angle change exceeds the preset threshold of 10 degrees and remains for 2 seconds, it is determined to be a valid manual rotation operation; d. Map continuous angle values ​​to several discrete logic positions; e. The corresponding headlight control command is only generated after the knob assembly 2 has remained stably within the angle range corresponding to a certain logic position for more than 2 seconds, according to a preset time.

[0038] In an optional embodiment, in step S4, when the headlights are in a fault state, the generated feedback command has the highest priority, and the intensity of the tactile feedback and the prominence of the visual feedback are set to be higher than the feedback under normal conditions. The vehicle light status information includes the vehicle light switch status, current lighting mode, load conditions and fault diagnosis information. The touch screen 3 can be used to display the vehicle light status information.

[0039] In practice: First, the intelligent control unit detects the operation of the knob assembly in real time through the Hall sensor module and the thin-film pressure sensor, and generates an operation signal. Then, it analyzes the detected operation signal, generates the corresponding headlight control command, and sends it through the vehicle communication bus. Second, the intelligent control unit receives the status information of the headlight system in real time through the vehicle communication bus or the direct feedback line. Then, the intelligent control unit generates the corresponding multi-mode feedback command based on the current headlight status information, historical status, and the received operation signal. Finally, the visual feedback unit and the tactile feedback unit execute the multi-mode feedback command and output feedback to the driver through visual and tactile means. The intelligent control unit integrates execution control logic, feedback decision logic, and anti-accidental touch decision logic. It can generate headlight control commands based on operation signals and generate feedback control commands based on headlight status information received from the vehicle communication bus or headlight drive module. This transforms the rotary switch from a passive actuator into an intelligent interactive node with preliminary judgment capabilities. Furthermore, the intelligent control unit can receive and process status information from the headlight drive module and bus, such as load conditions and fault codes. This information is not only used for feedback but also promptly informs the driver through preset feedback modes, facilitating timely maintenance and providing data support for potential pre-diagnosis and after-sales maintenance. The thin-film pressure sensor has two preset voltage thresholds to distinguish and trigger different vehicle lighting control functions, including a fog light switching function corresponding to the first pressure level and a headlight delay-off function corresponding to the second pressure level. The control method is as follows: S101. Detect the axial pressing operation on the knob assembly and identify its pressing force. S102. The intelligent control unit reads the voltage value detected by the thin-film pressure sensor 5 and compares it with two preset voltage thresholds. S103. When the pressure value is greater than the first voltage threshold when lightly pressed, the fog light turning-on command is triggered, and the haptic feedback unit is simultaneously controlled to generate a short, crisp click vibration, and the visual feedback unit is controlled to turn on the corresponding color of visual feedback light. S104. When the pressure value is greater than the second voltage threshold when pressed hard, the timed lighting turn-on command is triggered, the tactile feedback unit is controlled to generate a longer and stronger vibration feedback, and the visual feedback unit is simultaneously controlled to turn on the corresponding color visual feedback light. S105. Pressing the knob assembly lightly or firmly for 3-5 seconds will trigger the command to turn off the fog lights and the command to turn off the timed lighting, respectively, and can control the fog lights and timed lighting functions to be turned off separately.

[0040] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotary switch mechanism for automotive headlights with status feedback, comprising a rotary switch body (1), a rotary assembly (2), and a touch screen (3) disposed at the end of the rotary assembly (2), characterized in that: The rotary switch body (1) has a Hall sensor module (4) on one side of its inner cavity. The Hall sensor module (4) has a thin film pressure sensor (5) at one end and is connected to the knob assembly (2) at the other end. The rotary switch body (1) and the knob assembly (2) are respectively provided with a visual feedback unit (6) and a tactile feedback unit (7). It also includes an intelligent control unit, which has pre-stored execution control logic, feedback decision logic, and anti-misoperation decision logic. The intelligent control unit is electrically connected to the Hall sensor module (4), the thin film pressure sensor (5), the vehicle communication bus, and the headlight drive module. It is used to generate headlight control commands based on operation signals and to generate feedback control commands based on headlight status information received from the vehicle communication bus or the headlight drive module. Its operation method includes the following steps: S1: The intelligent control unit detects the operation of the knob assembly (2) in real time through the Hall sensor module (4) and the thin film pressure sensor (5) and generates an operation signal; S2: Analyze the detected and collected operation signals, generate corresponding vehicle light control commands, and send them through the vehicle communication bus; S3: The intelligent control unit receives real-time status information of the vehicle lighting system via the vehicle communication bus or direct feedback line; S4: The intelligent control unit generates corresponding multi-mode feedback commands based on the current headlight status information, historical status, and received operation signals; S5: The visual feedback unit (6) and the tactile feedback unit (7) execute multimodal feedback instructions and output feedback to the driver through visual and tactile means.

2. The automotive headlight rotary switch mechanism with status feedback according to claim 1, characterized in that: The rotary knob assembly (2) has rotation positions set sequentially as off, automatic, parking light, low beam, and high beam. Each position has a corresponding position indicator with light. When rotated to different positions, the brightness of the corresponding position indicator turns on, and the visual feedback unit (6) of the corresponding position presents different light colors for visual feedback. The tactile feedback unit (7) triggers tactile feedback simultaneously, generating a short, crisp simulated click vibration.

3. The automotive headlight rotary switch mechanism with status feedback according to claim 1, characterized in that: The knob switch body (1) has an arc-shaped limiting groove (9) at one end. The knob assembly (2) has a limiting slider (10) fixed on the outer side of one end. The limiting slider (10) passes through the arc-shaped limiting groove (9) and is used to limit the knob assembly (2) so that the knob assembly (2) can only rotate within a specified angle. There is a gap between the limiting slider (10) and the arc-shaped limiting groove (9) for the knob assembly (2) to move longitudinally to complete the pressing operation of the membrane pressure sensor (5).

4. The automotive headlight rotary switch mechanism with status feedback according to claim 3, characterized in that: The Hall sensor module (4) includes a Hall sensor (401). The Hall sensor (401) has a rotating shaft (402) and an annular sleeve (403) at its end. A damping bearing (404) is provided between the rotating shaft (402) and the annular sleeve (403). A guide slide rod (405) is fixedly provided at one end of the Hall sensor (401) away from the rotating shaft (402). One end of the guide slide rod (405) slides through the knob switch body (1). A reset spring (406) is sleeved on the outside of the guide slide rod (405). The two ends of the reset spring (406) are respectively connected to the knob switch body (1) and the Hall sensor (401) for resetting the knob assembly (2) after axial pressing.

5. A car headlight rotary switch mechanism with status feedback according to claim 4, characterized in that: The thin-film pressure sensor (5) presets two voltage thresholds to distinguish and trigger different vehicle lighting control functions, including the fog light switching function corresponding to the first pressure level and the headlight delay-off function corresponding to the second pressure level. Its control method includes the following steps: S101. Detect the axial pressing operation on the knob assembly (2) and identify its pressing force. S102, The intelligent control unit reads the voltage value detected by the thin-film pressure sensor (5) and compares it with two preset voltage thresholds; S103. When the pressure value is greater than the first voltage threshold when lightly pressed, the fog light is triggered and the tactile feedback unit (7) is controlled to generate a short, crisp click vibration, and the visual feedback unit (6) is controlled to turn on the corresponding color visual feedback light. S104. When the pressure value is greater than the second voltage threshold when pressed hard, the timed lighting turn-on command is triggered, and the tactile feedback unit (7) is controlled to generate a longer and stronger vibration feedback, and the visual feedback unit (6) is controlled to turn on the corresponding color visual feedback light. S105. Press the knob component (2) lightly or firmly and hold for 3-5 seconds to trigger the command to turn off the fog lights and the command to turn off the timed lighting, respectively, and control the fog lights and timed lighting functions to turn off.

6. The automotive headlight rotary switch mechanism with status feedback according to claim 5, characterized in that: When the pressure value exceeds a certain threshold and is maintained for 1-2 seconds, it is considered a valid pressing operation and the corresponding instruction will be triggered. When the knob component (2) is pressed hard to trigger the instruction to turn on the timed lighting, the instruction to turn on the fog lights will not be triggered even if the pressure value is greater than the first voltage threshold.

7. The automotive headlight rotary switch mechanism with status feedback according to claim 1, characterized in that: The visual feedback unit (6) includes an arc-shaped mounting groove (601) on the knob switch body (1), and a light-transmitting panel (602) and a variable light LED lamp (603) are respectively provided on the inner cavity at the end of the arc-shaped mounting groove (601) and one side of the inner cavity. The tactile feedback unit (7) includes an annular groove (701) opened in the knob assembly (2), and micro vibration motors (702) are equidistantly arranged in the annular groove (701).

8. The automotive headlight rotary switch mechanism with status feedback according to claim 1, characterized in that: The intelligent control unit has a pre-stored anti-mistouch decision logic setting the minimum rotation angle to ±10 degrees and the dwell confirmation time to 2 milliseconds. When the driver rotates the knob component (2) more than 10 degrees and holds it for 2 seconds, the intelligent control unit will determine that the driver intends to switch gears.

9. A car headlight rotary switch mechanism with status feedback according to claim 8, characterized in that: The intelligent control unit contains pre-stored anti-accidental touch decision logic, which executes the following steps to achieve anti-accidental touch operation: a. Continuously read the continuous angle change signal output by the Hall sensor module (4); b. Perform digital filtering on the continuous angle change signal, and calculate its continuous angle change amount and final dwell time; c. When the continuous angle change exceeds the preset threshold of 10 degrees and remains for 2 seconds, it is determined to be a valid manual rotation operation; d. Map continuous angle values ​​to several discrete logic positions; e. The corresponding headlight control command is generated only after the knob assembly (2) has been stably held within the angle range corresponding to a certain logic position for more than 2 seconds.

10. A car headlight rotary switch mechanism with status feedback according to claim 1, characterized in that: In step S4, when the headlights are faulty, the generated feedback command has the highest priority, and the intensity of the tactile feedback and the prominence of the visual feedback are set to be higher than the feedback under normal conditions. The vehicle light status information includes the vehicle light switch status, current lighting mode, load conditions and fault diagnosis information. The touch screen (3) can be used to display the vehicle light status information.

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