A system and control method for linking haptic feedback of car seats with ambient lighting

Abstract

This application provides a system and control method for linking haptic feedback and ambient lighting in an automotive seat, relating to the field of vehicle technology. The system includes: a touch input module for receiving user input to activate and adjust the massage function of the seat, generating corresponding adjustment signals; the touch input module is located on the side or armrest of the automotive seat; a main controller for receiving and parsing the adjustment signals to obtain the target massage level, and generating corresponding massage control signals and lighting control signals based on the massage level; a seat massage execution module for responding to the massage control signals and executing massage actions corresponding to the target massage level; and an ambient lighting module for responding to the lighting control signals and displaying light colors and animation effects associated with the target massage level. Implementing the technical solution of this application enhances the interactive experience.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a system and control method for linking tactile feedback of car seats with ambient lighting. Background Technology

[0002] With the increasing demand for intelligent vehicles and enhanced cabin comfort, car seat massage functions have become an important feature for improving driving and riding comfort. Currently, seat massage functions mostly rely on the central control screen for control, requiring users to switch between interfaces, which lacks flexibility. Furthermore, the massage function and ambient lighting often operate independently, providing only a single tactile experience. There is a lack of linkage between massage levels and lighting effects, and the massage status cannot be intuitively presented through visual feedback. This makes it difficult to meet users' needs for multi-sensory interactive experiences, affecting the richness and immersion of the driving and riding experience. Summary of the Invention

[0003] To address the aforementioned technical issues, this application provides a system and control method for linking automotive seat tactile feedback with ambient lighting.

[0004] In a first aspect, this application provides a car seat haptic feedback and ambient lighting linkage system, comprising: a touch input module for receiving user input to activate and adjust the seat massage function and generating a corresponding adjustment signal; the touch input module is located on the side or armrest of the car seat; a main controller electrically connected to the touch input module for receiving and parsing the adjustment signal to obtain a target massage level, and generating a corresponding massage control signal and a lighting control signal based on the target massage level; a seat massage execution module electrically connected to the main controller for responding to the massage control signal and executing a massage action corresponding to the target massage level; and an ambient lighting module electrically connected to the main controller for responding to the lighting control signal and displaying a light color and animation effect associated with the target massage level; wherein, the main controller is configured to: synchronously control the seat massage execution module to execute a massage action corresponding to the target massage level and control the light color and animation effect of the ambient lighting module based on the adjustment signal input from the touch input module.

[0005] By adopting the above technical solution, the touch input module is placed on the side of the car seat or armrest, making it convenient for users to operate and avoiding distraction. The system can synchronously control the working status of the seat massage execution module and the lighting color and animation effects of the ambient lighting module according to the user's operation of activating the seat massage function and adjusting the intensity. This achieves linkage between massage intensity and lighting effects, and intuitively presents the massage status through visual feedback, meeting the user's needs for multi-sensory collaborative interaction, enhancing the richness and immersion of the driving experience, and achieving the effect of improving the interactive experience.

[0006] Optionally, the touch input module includes: a bar-shaped touch sensing unit for sensing the user's click or swipe operation to generate a gear adjustment signal and transmit it to the main controller; and a vibration feedback unit electrically connected to the main controller for generating vibration to provide tactile feedback to the user when the bar-shaped touch sensing unit senses a valid operation.

[0007] By adopting the above technical solution, the strip-shaped touch sensing unit can sense the user's click or swipe operation, generate a gear adjustment signal, and transmit it to the main controller to realize the input of the seat massage function start and gear adjustment operation; the vibration feedback unit generates vibration when the strip-shaped touch sensing unit senses a valid operation, providing tactile feedback to the user, enhancing the user's operating experience, and avoiding the problem caused by the need to switch interfaces due to distraction during operation, thus improving the flexibility of operation.

[0008] Optionally, the main controller has a pre-stored mapping table between massage levels and lighting parameters. The lighting parameters include light color, animation effect type, and brightness. The mapping table is configured such that the higher the massage level, the higher the corresponding light brightness. The main controller is also configured to query the mapping table based on the target massage level to determine the corresponding target lighting parameters and generate a lighting control signal based on the target lighting parameters.

[0009] By adopting the above technical solution, when users adjust the seat massage function, they can simultaneously control the ambient light to display the light color, animation effect type, and brightness associated with the target massage level. The higher the massage level, the brighter the light. This allows for a visual feedback that intuitively presents the massage status, meeting users' needs for multi-sensory collaborative interaction and enhancing the richness and immersion of the driving experience.

[0010] Optionally, the main controller includes a microcontroller unit (MCU), and the seat massage execution module includes a massage drive circuit and a massage actuator. The massage drive circuit is used to drive the massage actuator. The input terminal of the massage drive circuit is connected to the MCU to receive massage control signals. The massage actuator is a massage motor or an air pump.

[0011] By adopting the above technical solution, the main controller uses a microcontroller unit (MCU) to effectively control the system; the seat massage execution module includes a massage drive circuit and a massage actuator. The massage drive circuit can drive the massage actuator, and the massage actuator can be a massage motor or an air pump, which can be flexibly selected according to different needs to realize the massage action corresponding to the target massage level, meet the user's needs for seat massage function, and at the same time link with the ambient light module to enhance the richness and immersion of the driving experience.

[0012] Optionally, the massage drive circuit includes: a first NMOS transistor, a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, a first diode, and a first electrostatic discharge (ESD) protection diode. The first terminal of the first resistor is connected to the massage drive control pin of the MCU; the second terminal of the first resistor is electrically connected to the gate of the first NMOS transistor; the second resistor is connected between the gate of the first NMOS transistor and the first ground terminal; the third resistor is connected between the source of the first NMOS transistor and the first ground terminal; the first capacitor is connected between the drain of the first NMOS transistor and the first ground terminal; the second capacitor and the third resistor are connected in parallel; the anode of the first diode is electrically connected to the drain of the first NMOS transistor; the cathode of the first diode is electrically connected to the positive terminal of the automotive battery; the first ESD protection diode is connected between the drain of the first NMOS transistor and the first ground terminal; the source of the first NMOS transistor is also electrically connected to the massage current detection pin of the MCU. The massage current detection pin is used to collect the real-time current signal when the massage motor is working; and the massage actuator is connected to both ends of the first diode.

[0013] By adopting the above technical solution, the massage drive circuit uses a specific circuit structure composed of a first NMOS transistor, a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, a first diode, and a first electrostatic protection tube. It can receive the massage drive control pin signal from the MCU. At the same time, the MCU collects the real-time current signal of the massage motor when it is working through the massage current detection pin, ensuring that the massage actuator can accurately execute the corresponding massage action.

[0014] Optionally, the ambient light module includes at least one of the following communication interfaces: Controller Area Network (CAN) communication interface; Local Area Network (LIN) communication interface; Pulse Width Modulation (PWM) drive interface; the ambient light module also includes an LED module, and the main controller is configured to send lighting control signals to the ambient light module through the CAN communication interface, LIN communication interface or PWM drive interface, so that the LED module displays light color and animation effects.

[0015] By adopting the above technical solution, the ambient light module has at least one communication interface such as CAN, LIN, and PWM, which allows the main controller to send light control signals to the LED module through these interfaces. This enables the LED module to display light colors and animation effects that are associated with the target massage level, enhancing system compatibility and scalability, meeting different application scenarios and needs, and ensuring accurate and reliable transmission of light control signals. This guarantees the stability and accuracy of the light display, thereby improving the user's multi-sensory interactive experience.

[0016] Optionally, the main controller includes a microcontroller unit (MCU), and the CAN communication interface includes: a CAN transceiver chip, a common-mode inductor, a fourth resistor, a fifth resistor, a third capacitor, a fourth capacitor, a first fuse, a second fuse, a second ESD protection diode, a first transient voltage suppressor diode, and a second transient voltage suppressor diode. The TXD and RXD terminals of the CAN transceiver chip are connected to the CAN transmit and CAN receive pins of the MCU, respectively. The enable terminal of the CAN transceiver chip is electrically connected to the CAN enable control pin of the MCU via the fourth resistor. The differential output terminals CANH and CANL of the CAN transceiver chip are electrically connected to the first and second input terminals of the common-mode inductor, respectively. The first output terminal of the common-mode inductor is connected to CANH in the external CAN bus via the first fuse. The two output terminals are connected to the CANL of the external CAN bus through the second fuse; the third capacitor is connected between the first output terminal and the second ground terminal of the common mode inductor; the fourth capacitor is connected between the second output terminal and the second ground terminal of the common mode inductor; the fifth resistor is connected between the first output terminal and the second output terminal of the common mode inductor; the first and second terminals of the second electrostatic discharge protection diode are electrically connected to the first and second output terminals of the common mode inductor, respectively; the common terminal of the second electrostatic discharge protection diode is electrically connected to the second ground terminal; the positive terminals of the first and second transient voltage suppression diodes are both electrically connected to the second ground terminal; the negative terminals of the first and second transient voltage suppression diodes are electrically connected to the first and second output terminals of the common mode inductor, respectively.

[0017] By adopting the above technical solution, the main controller and the ambient light module can communicate via CAN. The common-mode inductor can filter and anti-interference the CAN signal. The first and second fuses can cut off the circuit to protect the equipment when an overcurrent occurs. The second electrostatic discharge protection tube, the first transient voltage suppression diode, and the second transient voltage suppression diode can suppress electrostatic discharge and transient voltage, protect the CAN communication interface from damage, and ensure that the main controller can stably send lighting control signals to the ambient light module, thereby achieving stable linkage between the car seat haptic feedback and the ambient light.

[0018] Optionally, the main controller includes a microcontroller unit (MCU), and the LIN communication interface includes: a LIN transceiver chip, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, a second diode, a third electrostatic discharge protection diode, and a ferrite bead. The RXD pin, TXD pin, enable pin EN, and reset output pin NRES of the LIN transceiver chip are electrically connected to the corresponding pins of the MCU. The fifth capacitor is connected between the RXD pin of the LIN transceiver chip and the third ground terminal. The sixth resistor is connected between the enable pin EN of the LIN transceiver chip and the first power supply terminal. The seventh resistor is connected between the reset output pin NRES of the LIN transceiver chip and the first power supply terminal. The power output pin of the LIN transceiver chip is electrically connected to the third ground terminal through the sixth capacitor. The seventh capacitor is connected in parallel with the sixth capacitor. The source output pin is also electrically connected to the first end of the eighth resistor, and the other end of the eighth resistor serves as the first power supply terminal to provide a preset voltage. The power input pin of the LIN transceiver chip is used to connect to the second power supply. The eighth and ninth capacitors are connected in parallel between the power input pin of the LIN transceiver chip and the third ground terminal. The LIN pin of the LIN transceiver chip is electrically connected to the negative terminal of the second diode. The positive terminal of the second diode is electrically connected to the power input pin of the LIN transceiver chip through the ninth resistor. The tenth capacitor is connected between the LIN pin of the LIN transceiver chip and the ground pin of the LIN transceiver chip. The ground pin of the LIN transceiver chip is electrically connected to the third ground terminal. The LIN pin of the LIN transceiver chip is electrically connected to the first end of the ferrite bead. The second end of the ferrite bead is connected to the external LIN bus. The negative terminal of the third electrostatic discharge tube is electrically connected to the second end of the ferrite bead. The positive terminal of the third electrostatic discharge tube is electrically connected to the third ground terminal.

[0019] By adopting the above technical solution, the LIN transceiver chip in the LIN communication interface is connected to the MCU, and the settings of various resistors, capacitors, diodes, electrostatic protection tubes and ferrite beads can ensure that the main controller and the ambient light module communicate stably and reliably based on the LIN bus. This enables the ambient light module to present light colors and animation effects associated with the target massage level, enhancing the richness and immersion of the driving experience.

[0020] Optionally, the main controller includes a microcontroller unit (MCU), and the PWM drive interface includes: a first transistor, a second transistor, a third transistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, an eleventh capacitor, a twelfth capacitor, and a thirteenth capacitor. The MCU's red LED control pin is electrically connected to the base of the first transistor via the tenth resistor. The eleventh resistor is connected between the base of the first transistor and the third ground terminal. The emitter of the first transistor is electrically connected to the third ground terminal. The collector of the first transistor is electrically connected to the first terminal of the twelfth resistor. The second terminal of the twelfth resistor is electrically connected to the third ground terminal via the eleventh capacitor. The MCU's green LED control pin is connected to the base of the second transistor via the thirteenth resistor. The transistors are electrically connected as follows: the fourteenth resistor is connected between the base of the first transistor and the third ground terminal; the emitter of the second transistor is electrically connected to the third ground terminal; the collector of the first transistor is electrically connected to the first end of the twelfth resistor; and the second end of the fifteenth resistor is electrically connected to the third ground terminal through the twelfth capacitor. The blue LED control pin of the MCU is electrically connected to the base of the third transistor through the sixteenth resistor; the seventeenth resistor is connected between the base of the third transistor and the third ground terminal; the emitter of the third transistor is electrically connected to the third ground terminal; the collector of the third transistor is electrically connected to the first end of the eighteenth resistor; and the second end of the eighteenth resistor is electrically connected to the third ground terminal through the thirteenth capacitor. The second ends of the twelfth, fifteenth, and eighteenth resistors are respectively electrically connected to the red, green, and blue signal terminals of the LED module.

[0021] By adopting the above technical solution, the microcontroller unit (MCU) in the main controller can transmit control signals to the red, green, and blue signal terminals of the LED module based on the PWM drive interface and using a circuit composed of multiple transistors, resistors, and capacitors. This enables precise control of the ambient light color and animation effects, enhances the linkage between the car seat massage function and the ambient light, improves the immersiveness and richness of the driving experience, and allows users to operate from the side of the seat or the armrest, avoiding distraction when switching interfaces and improving operational flexibility.

[0022] In a second aspect of this application, a control method for a car seat haptic feedback and ambient lighting linkage system is also provided, applicable to any of the aforementioned car seat haptic feedback and ambient lighting linkage systems, comprising: receiving a gear adjustment signal generated by a user's operation of activating and adjusting the gear of the seat massage function via a touch input module; parsing the gear adjustment signal to obtain a target massage gear, and generating a corresponding massage control signal and a lighting control signal based on the target massage gear; and simultaneously executing the following steps: controlling the seat massage execution module to perform a massage action corresponding to the target massage gear based on the massage control signal; and controlling the ambient lighting module to display a predetermined light color and animation effect associated with the target massage gear based on the lighting control signal.

[0023] In summary, one or more technical solutions provided in this application have at least the following technical effects or advantages:

[0024] 1. The touch input module is placed on the side of the car seat or armrest for easy user operation and to avoid distraction. The system can simultaneously control the working status of the seat massage execution module and the lighting color and animation effects of the ambient lighting module based on the user's operation of activating and adjusting the seat massage function. This achieves linkage between massage level and lighting effects, and intuitively presents the massage status through visual feedback, meeting the user's needs for multi-sensory collaborative interaction, enhancing the richness and immersion of the driving experience, and achieving the effect of improving the interactive experience.

[0025] 2. The strip-shaped touch sensing unit can sense the user's click or swipe operation, generate a gear adjustment signal, and transmit it to the main controller to realize the input of the seat massage function start and gear adjustment operation; the vibration feedback unit generates vibration when the strip-shaped touch sensing unit senses a valid operation, providing tactile feedback to the user, enhancing the user's operating experience, and avoiding the problem caused by the need to switch interfaces due to operation, thus improving the flexibility of operation. Attached Figure Description

[0026] Figure 1 This is a framework diagram of a car seat haptic feedback and ambient lighting linkage system provided in an embodiment of this application;

[0027] Figure 2 This is a circuit diagram of the main control module and the touch module provided in the embodiments of this application;

[0028] Figure 3 This is a circuit diagram of the massage drive module provided in an embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the CAN communication interface circuit provided in an embodiment of this application;

[0030] Figure 5 This is a schematic diagram of the LIN communication interface circuit provided in an embodiment of this application;

[0031] Figure 6 This is a schematic diagram of the PWM drive interface circuit provided in an embodiment of this application;

[0032] Figure 7 This is a flowchart of the control method for the linkage system between automotive seat tactile feedback and ambient lighting provided in the embodiments of this application.

[0033] Figure reference numerals: R1 - First resistor, R2 - Second resistor, R3 - Third resistor, R4 - Fourth resistor, R5 - Fifth resistor, R6 - Sixth resistor, R7 - Seventh resistor, R8 - Eighth resistor, R9 - Ninth resistor, R10 - Tenth resistor, R11 - Eleventh resistor, R12 - Twelfth resistor, R13 - Thirteenth resistor, R14 - Fourteenth resistor, R15 - Fifteenth resistor, R16 - Sixteenth resistor, R17 - Seventeenth resistor, R18 - Eighteenth resistor, C1 - First capacitor, C2 - Second capacitor, C3 - Third capacitor, C4 - Fourth capacitor, C5 - Fifth capacitor, C6 - Sixth capacitor, C7 - Seventh capacitor, C8 - Eighth capacitor, C9 - Ninth capacitor, C10 - Tenth capacitor, C11 - Tenth capacitor One capacitor, C12 - twelfth capacitor, C13 - thirteenth capacitor, D1 - first diode, D2 - second diode, Q1 - first NMOS transistor, Q2 - first transistor, Q3 - second transistor, Q4 - third transistor, ESD1 - first electrostatic discharge protection diode, ESD2 - second electrostatic discharge protection diode, ESD3 - third electrostatic discharge protection diode, F1 - first fuse, F2 - second fuse, TVS1 - first transient voltage suppressor diode, TVS2 - second transient voltage suppressor diode, B1 - ferrite bead, U1 - CAN transceiver chip, U2 - LIN transceiver chip, CMF1 - common mode inductor, BAT - positive terminal of automotive battery, EGND - first ground terminal, AGND - second ground terminal, GND - third ground terminal. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0035] In the description of the embodiments of this application, the words "for example" or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design that is described as "for example" or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design options. Rather, the use of the words "for example" or "for instance" is intended to present the relevant concepts in a specific manner.

[0036] In the description of the embodiments of this application, the term "multiple" means two or more. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The terms "comprising," "including," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0037] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 The embodiments of this application will be described in detail.

[0038] This application provides a system that links haptic feedback of automotive seats with ambient lighting. Figure 1 This is a framework diagram of a car seat haptic feedback and ambient lighting linkage system provided in an embodiment of this application. The system includes:

[0039] The touch input module is used to receive user input for activating and adjusting the seat massage function and generate corresponding adjustment signals. The touch input module is located on the side or armrest of the car seat.

[0040] The main controller, electrically connected to the touch input module, is used to receive and parse the level adjustment signal to obtain the target massage level, and generate corresponding massage control signals and light control signals based on the target massage level.

[0041] The seat massage execution module is electrically connected to the main controller and is used to respond to massage control signals and execute massage actions corresponding to the target massage level.

[0042] The ambient lighting module, electrically connected to the main controller, is used to respond to lighting control signals and present light colors and animation effects associated with the target massage level.

[0043] The main controller is configured to: synchronously control the seat massage execution module to perform massage actions corresponding to the target massage level, and control the light color and animation effects of the ambient light module, based on the level adjustment signal input by the touch input module.

[0044] In the above embodiments, the touch input module is located on the side of the car seat or armrest for easy user operation and to avoid distraction. The system can simultaneously control the working status of the seat massage execution module and the light color and animation effects of the ambient light module according to the user's operation of activating and adjusting the seat massage function. This achieves linkage between massage level and lighting effect, and intuitively presents the massage status through visual feedback, meeting the user's need for multi-sensory collaborative interaction, enhancing the richness and immersion of the driving experience, and achieving the effect of improving the interactive experience.

[0045] Users operate the massage function directly via a touch input module integrated into the side of the seat or armrest (e.g., activating or adjusting massage levels), generating a level adjustment signal. The main controller receives and parses this signal, determines the target massage level, and simultaneously generates two control signals based on that level: one is sent to the seat massage execution module to drive the execution of massage actions corresponding to the target massage level; the other is sent to the ambient lighting module to control the ambient lighting module to display specific light colors and animation effects associated with the target massage level. The seat massage execution module executes massage actions matching the target massage level according to the massage control signal (e.g., different levels correspond to different massage intensities and frequencies), and the ambient lighting module displays light colors (e.g., warm light for gentle levels and cool light for strong levels) and animation effects (e.g., light gradients and flashing frequency changes when switching levels) associated with the target massage level according to the light control signal. The system achieves real-time, synchronous linkage between massage tactile sensation and light visuals, allowing users to visually perceive the current massage status while adjusting the massage function. The main controller enables synchronized control of the massage status and lighting effects, allowing tactile and visual feedback to work in tandem for the same adjustment level. Traditional seat massage relies on the central control screen for operation, requiring interface switching, which is inconvenient and distracting while driving. Moreover, the massage function in related technologies is independent of the in-vehicle ambient lighting system, providing only a single tactile stimulus and failing to create an immersive experience with multi-sensory interaction. Users cannot directly and quickly perceive the massage level status or changes visually, relying on text / icon prompts on the instrument panel or central control screen, resulting in low interaction efficiency. In this embodiment, the massage control touch module is placed on the side of the seat or armrest, which is ergonomic, facilitates blind operation, reduces driver eye shift, and improves driving safety. Through real-time mapping and synchronous linkage of massage levels and light colors / animations, tactile and visual feedback are organically combined, enhancing the immersiveness and technological feel of the cabin interaction. Different massage levels correspond to different light colors and dynamic effects (such as gradients, breathing, and flowing), allowing users to intuitively and quickly understand the current massage status through ambient light changes without having to look at the screen. Through unified parsing and synchronous control by the main controller, it is ensured that massage execution and light changes strictly correspond in time and logic, avoiding the experience fragmentation caused by signal delays or misalignments. The linked lighting effects can create a visual atmosphere that matches the tactile experience according to changes in massage intensity and mode, enhancing the overall comfort, personalization, and luxury of the cabin.

[0046] In an optional embodiment, the touch input module includes: a bar-shaped touch sensing unit for sensing a user's click or swipe operation to generate a gear adjustment signal and transmit it to the main controller; and a vibration feedback unit electrically connected to the main controller for generating vibration to provide tactile feedback to the user when the bar-shaped touch sensing unit senses a valid operation.

[0047] In the above embodiments, the bar-shaped touch sensing unit can sense the user's click or swipe operation to generate a gear adjustment signal and transmit it to the main controller to realize the input of the seat massage function start and gear adjustment operation; the vibration feedback unit generates vibration when the bar-shaped touch sensing unit senses a valid operation, providing tactile feedback to the user, enhancing the user's operating experience, and avoiding the problem caused by the need to switch interfaces due to operation, thus improving the flexibility of operation.

[0048] The massage intensity adjustment is input via a strip-shaped touch sensor unit. This unit can recognize two types of core user operations: click operations, such as clicking to start / switch a fixed intensity; and swipe operations, such as swiping up / down or left / right to continuously adjust the intensity. It converts the recognized valid operations into corresponding intensity adjustment signals, which are directly transmitted to the main controller to ensure accurate transmission of operation commands. A vibration feedback unit is electrically connected to the main controller. When the strip-shaped touch sensor unit recognizes a valid user operation (e.g., the operation force or position meets preset thresholds, excluding accidental touches), the main controller synchronously sends a trigger signal to the vibration feedback unit, driving it to generate vibrations of a preset intensity / frequency (e.g., slight short vibrations). This tactile feedback informs the user that "the operation has been recognized by the system," forming a closed loop of "operation input - feedback confirmation." In related technologies, touch input modules often only have "signal acquisition" functions and lack an operation feedback mechanism. After operation, users cannot determine whether "the system has received the command" (e.g., no feedback after pressing, requiring repeated operation confirmation), easily leading to "repeated operation" or "operation not taking effect without the user's knowledge." The "strip shape" of the strip-shaped touch sensing unit in this embodiment clearly defines the user's operation boundary, reducing the probability of accidental touches; it can adapt to the operating habits of different users, ensuring that the gear adjustment command is completely matched with the user's intention, thus improving the reliability of operation; the instant tactile feedback of the vibration feedback unit (such as vibration within 0.1-0.3 seconds after operation) allows the user to confirm the operation is effective without waiting for the system's subsequent response (such as the start of a massage action or a change in lights), avoiding the sluggish feeling of "repeatedly trying to operate" and forming a smooth operation loop. Especially in driving scenarios, it can reduce the user's attention being distracted by "whether the operation is effective" and improve the user experience.

[0049] In an optional embodiment, the main controller pre-stores a mapping table between massage levels and light parameters. The light parameters include light color, animation effect type, and brightness. The mapping table is configured such that the higher the massage level, the higher the corresponding light brightness. The main controller is also configured to query the mapping table based on the target massage level to determine the corresponding target light parameters and generate a light control signal based on the target light parameters.

[0050] In the above embodiments, when the user adjusts the seat massage function, the ambient light can be controlled to display the light color, animation effect type and brightness associated with the target massage level. The higher the massage level, the brighter the light. This provides visual feedback to intuitively present the massage status, meeting the user's need for multi-sensory collaborative interaction and enhancing the richness and immersion of the driving experience.

[0051] The main controller pre-stores a mapping table of "massage level - light parameters", which clarifies the binding relationship between each massage level (such as level 1, level 2, level 3, etc.) and specific light parameters. Optionally, the light parameters can include not only light color and animation effects, but also brightness. For example, the higher the massage level, the higher the corresponding light brightness, such as level 1 corresponding to 30% brightness, level 2 corresponding to 50% brightness, and level 3 corresponding to 60% brightness. At the same time, it can synchronously bind exclusive colors (such as warm yellow for low level and cool blue for high level) and animation effects (such as slow breathing for low level and rapid flashing for high level). Once the main controller receives user input and parses the "target massage level" via the touch input module, it no longer generates light control signals solely through fuzzy logic. Instead, it first calls an internally stored mapping table, using "target massage level" as the query keyword, to precisely match the complete target light parameters (color + animation effect + brightness) corresponding to that level. Then, based on these target light parameters, it generates a structured light control signal (containing specific instructions such as color encoding, animation frequency, and brightness value), which is transmitted to the ambient light module to ensure that the ambient light effect perfectly matches the target massage level. The mapping table not only associates brightness but also color and animation effect type. This allows the system to match distinctly different light and color themes (such as blue gradient and red pulsation) and dynamic effects for different levels or modes (such as soothing and invigorating), establishing a strong correlation between visual feedback (light brightness) and tactile intensity (massage strength) that aligns with human intuition, thereby providing a richer, more emotional, and differentiated multi-sensory experience.

[0052] In an optional embodiment, the main controller includes a microcontroller unit (MCU), and the seat massage execution module includes a massage drive circuit and a massage actuator. The massage drive circuit is used to drive the massage actuator. The input terminal of the massage drive circuit is connected to the MCU to receive massage control signals. The massage actuator is a massage motor or an air pump.

[0053] In the above embodiments, the main controller adopts a microcontroller unit (MCU) to effectively control the system; the seat massage execution module includes a massage drive circuit and a massage actuator. The massage drive circuit can drive the massage actuator, and the massage actuator can be a massage motor or an air pump, which can be flexibly selected according to different needs to realize the massage action corresponding to the target massage level, meet the user's needs for seat massage function, and at the same time link with the ambient light module to enhance the richness and immersion of the driving experience.

[0054] The main controller uses a microcontroller unit (MCU) as its core hardware platform. As a mature embedded control chip, the MCU possesses signal parsing, instruction generation, and peripheral driving capabilities. It receives the intensity adjustment signal transmitted from the touch input module, parses it through its internal program to obtain the target massage intensity, generates standardized massage control signals (such as PWM pulse signals, level signals, etc.), and outputs these signals to the massage drive circuit of the seat massage execution module. The massage actuator can be a massage motor or an air pump. If it is a massage motor, the drive signal controls the motor's speed (corresponding to massage frequency) and direction (corresponding to massage direction); if it is an air pump, the drive signal controls the air pump's inflation / deflation pressure (corresponding to massage intensity) and inflation frequency (corresponding to massage rhythm). Ultimately, the massage action matching the target massage intensity is achieved through motor rotation or air pump inflation / deflation. This embodiment uses an MCU as the main controller, which features controllable cost, low power consumption, flexible programming, and high reliability. It is very suitable for handling embedded control tasks with multiple inputs and outputs that require the execution of predetermined logic, providing a stable and efficient "brain" for the entire linkage system.

[0055] Figure 2 This is a circuit diagram of the main control module and touch module provided in this application embodiment. The touch module and the main control module correspond to the aforementioned touch input module and main controller, respectively. The main control module is activated by touching the touch sliders CIN1~CIN5. The main control module (such as an MCU) identifies the touch button level and provides corresponding current to the massage drive circuit to start the massage. At the same time, according to the level, the MCU selects the ambient light color and animation that match the level and drives the ambient light to execute the corresponding color and animation through CAN / LIN / PWM signals, allowing passengers to have a dual visual and tactile experience during the massage function.

[0056] In an optional embodiment, such as Figure 3 As shown, the massage drive circuit includes: a first NMOS transistor Q1, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2, a first diode D1, and a first electrostatic discharge protection diode ESD1. The first terminal of the first resistor R1 is connected to the massage drive control pin of the MCU (e.g., ...). Figure 2The circuit is connected to the MCU's (AP_C) pin. The second terminal of the first resistor R1 is electrically connected to the gate of the first NMOS transistor Q1. The second resistor R2 is connected between the gate of the first NMOS transistor Q1 and the first ground terminal EGND. The third resistor R3 is connected between the source of the first NMOS transistor Q1 and the first ground terminal EGND. The first capacitor C1 is connected between the drain of the first NMOS transistor Q1 and the first ground terminal EGND. The second capacitor C2 and the third resistor R3 are connected in parallel. The anode of the first diode D1 is electrically connected to the drain of the first NMOS transistor Q1, and the cathode of the first diode D1 is electrically connected to the positive terminal BAT of the car battery. The first electrostatic discharge protection diode ESD1 is connected between the drain of the first NMOS transistor Q1 and the first ground terminal EGND. The source of the first NMOS transistor Q1 is also connected to the MCU's massage current detection pin (e.g., ...). Figure 2 The AP_I pin is electrically connected, and the massage current detection pin is used to collect the real-time current signal when the massage motor is working. The massage actuator is connected to both ends of the first diode D1.

[0057] In the above embodiments, the massage drive circuit adopts a specific circuit structure composed of a first NMOS transistor Q1, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2, a first diode D1, and a first electrostatic discharge protection transistor ESD1. It can receive the massage drive control pin signal from the MCU. At the same time, the MCU collects the real-time current signal when the massage motor is working through the massage current detection pin to ensure that the massage actuator can accurately execute the corresponding massage action.

[0058] The circuit uses the first NMOS transistor Q1 as the core switching device to realize the MCU's on / off control and drive control of the massage actuator (air pump). The control signal (such as high level / low level, PWM signal) output by the MCU's massage drive control pin is transmitted to the gate of the first NMOS transistor Q1 through the first resistor R1 (current limiting protection to prevent excessive gate current from damaging the first NMOS transistor Q1); the second resistor R2 (pull-down resistor) is connected between the gate of the first NMOS transistor Q1 and the first ground terminal EGND to ensure that the gate is stably grounded when there is no control signal, and to avoid the first NMOS transistor Q1 being mistakenly turned on. The high-voltage power supply (such as 12V or 24V) provided by the positive terminal BAT of the car battery powers the massage actuator (such as a massage motor). When the gate of the first NMOS transistor Q1 receives a high-level control signal from the MCU, the first NMOS transistor Q1 is turned on. Current flows from the positive terminal BAT of the car battery through the actuator, the drain-source of the first NMOS transistor Q1, the third resistor R3, and to the first ground terminal EGND, driving the actuator to work. The conduction level of the first NMOS transistor Q1 can be controlled by a PWM signal. When the control signal is low, the first NMOS transistor Q1 is turned off, and the actuator stops working. The first diode D1 (freewheeling diode) is connected in parallel across the actuator (positive terminal connected to the drain of the first NMOS transistor Q1, negative terminal connected to the positive terminal BAT of the car battery). When the first NMOS transistor Q1 is suddenly turned off, the reverse electromotive force generated by the actuator (inductive load, such as an air pump motor) can form a circuit through the first diode D1, preventing the reverse voltage from breaking down the first NMOS transistor Q1 or damaging other components. The first electrostatic discharge protection diode ESD1 is connected in parallel between the drain of the first NMOS transistor Q1 and the ground terminal. It can quickly discharge the instantaneous high voltage generated by static electricity in the circuit (such as static electricity introduced by human contact), preventing the first NMOS transistor Q1 and the MCU pin from being damaged by static electricity. The first capacitor C1 is connected in parallel between the drain of the first NMOS transistor Q1 and the first ground terminal EGND to filter out high-frequency interference in the power supply line. The second capacitor C2 is connected in parallel with the third resistor R3 (current sampling resistor) to filter out noise in the current sampling signal and ensure the stability of the monitoring signal. The third resistor R3 also serves as a current sampling resistor. When the actuator is working, the current flows through the third resistor R3, generating a voltage drop. The source of the first NMOS transistor Q1 is connected to the massage current detection pin of the MCU. This pin can collect the voltage signal across the third resistor R3 and convert it into a real-time current signal. The MCU analyzes the current signal to determine the actuator's operating condition (e.g., an abnormally high current may correspond to actuator stall, and zero current may correspond to actuator disconnection). The massage actuator is connected across the first diode D1 (e.g., Figure 3 (BAT and AP in the text). This embodiment features a protection circuit (freewheeling and ESD protection) designed for the load characteristics of automotive seats, which significantly reduces the risk of damage to power devices and improves the durability and stability of the entire massage system in harsh automotive electronic environments.

[0059] In an optional embodiment, the ambient light module includes at least one of the following communication interfaces: a Controller Area Network (CAN) communication interface; a Local Interconnect Network (LIN) communication interface; and a Pulse Width Modulation (PWM) drive interface. The ambient light module also includes an LED module, and the main controller is configured to send lighting control signals to the ambient light module through the CAN communication interface, LIN communication interface, or PWM drive interface, so that the LED module displays light colors and animation effects.

[0060] In the above embodiments, the ambient light module has at least one communication interface such as CAN, LIN, and PWM, which allows the main controller to send light control signals to the LED module through these interfaces. This enables the LED module to display light colors and animation effects associated with the target massage level, enhancing system compatibility and scalability, meeting different application scenarios and needs, while ensuring accurate and reliable transmission of light control signals, guaranteeing the stability and accuracy of light display, and thus improving the user's multi-sensory collaborative interaction experience.

[0061] The ambient lighting module includes at least three commonly used automotive communication interfaces: CAN, LIN, and PWM. Each interface is designed to transmit signals for different control requirements. The CAN communication interface is suitable for high-speed data transmission across multiple nodes within the automotive cabin (e.g., forming a CAN network with the body controller and main controller). The main controller can transmit lighting control signals containing "color encoding, animation frequency, and brightness value" via CAN messages, supporting synchronous control of multiple ambient lights (e.g., seat ambient lights, door panel ambient lights). The LIN communication interface is suitable for low-speed, low-cost single-wire communication scenarios (e.g., controlling only a single set of seat ambient lights). The main controller sends simplified control signals (e.g., only containing lighting parameter commands corresponding to gear positions) via the LIN bus to meet basic linkage requirements. The PWM drive interface is suitable for scenarios where the main controller directly drives the ambient lights. The main controller outputs PWM signals with different duty cycles (e.g., duty cycle 0-100% corresponds to brightness 0-100%, and different frequency PWM signals correspond to different color switching rates) to directly adjust the brightness and animation effects of the LED module. After the main controller generates a lighting control signal based on the target massage level, it selects the appropriate communication interface (e.g., CAN interface for vehicles using a CAN network, LIN / PWM interface for local control) according to the cabin hardware architecture and sends the signal. The LED module receives the signal and, through its internal drive circuit, parses the signal instructions (e.g., RGB color values, flashing frequency) to control the on / off state and brightness output of different colored LED beads, ultimately presenting the light color (e.g., warm yellow, cool blue) and animation effects (e.g., breathing, flowing water, gradient) associated with the massage level. Three types of communication interfaces cover different application scenarios. The CAN / LIN interface features automotive-grade anti-interference design (e.g., differential signal transmission, error retransmission mechanism), with a signal loss rate of less than 0.01% in electromagnetic interference environments, ensuring "zero delay and no misalignment" in the lighting control signal. The PWM interface is directly driven by hardware, with a fast response speed (millisecond level), avoiding the delay problem of bus transmission. The combination of these two types of interfaces keeps the synchronization error between the lighting effect and the massage action within 100ms, resulting in a more seamless multi-sensory experience.

[0062] Figure 4 This is a schematic diagram of the CAN communication interface circuit provided in an embodiment of this application. Figure 4 J2 is the external interface of the CAN communication interface circuit.

[0063] In an optional embodiment, such as Figure 4As shown, the main controller includes a microcontroller unit (MCU), and the CAN communication interface includes: a CAN transceiver chip U1, a common-mode inductor CMF1, a fourth resistor R4, a fifth resistor R5, a third capacitor C3, a fourth capacitor C4, a first fuse F1, a second fuse F2, a second electrostatic discharge (ESD) diode ESD2, a first transient voltage suppressor diode TVS1, and a second transient voltage suppressor diode TVS2. The TXD and RXD terminals of the CAN transceiver chip U1 are respectively connected to the CAN transmit pins of the MCU (e.g., ...). Figure 2 CANTX), CAN receive pin (e.g.) Figure 2 (CANRX), the enable pin of the CAN transceiver chip U1 (e.g., CANRX) Figure 4 The STBY pin of U1 is connected to the CAN enable control pin of the MCU (e.g., via the fourth resistor R4) through the fourth resistor R4. Figure 2 The differential output terminals CANH and CANL of the CAN transceiver chip U1 are electrically connected to the first and second input terminals of the common-mode inductor CMF1, respectively. The first output terminal of the common-mode inductor CMF1 is connected to CANH in the external CAN bus through the first fuse F1, and the second output terminal of the common-mode inductor CMF1 is connected to CANL in the external CAN bus through the second fuse F2. The third capacitor C3 is connected between the first output terminal of the common-mode inductor CMF1 and the second ground terminal AGND. The fourth capacitor C4 is connected between the second output terminal of the common-mode inductor CMF1 and the second ground terminal AGND. The fifth resistor R5 is connected between the first output terminal and the second output terminal of the common-mode inductor CMF1. The first terminal of the second electrostatic discharge protection tube ESD2 (corresponding to...) Figure 4 The N1 terminal of the middle ESD2), and the second terminal of the second electrostatic discharge protection tube ESD2 (corresponding to...) Figure 4 The N2 terminal of the second ESD2 transistor is electrically connected to the first output terminal and the second output terminal of the common-mode inductor CMF1, respectively. The common terminal of the second ESD2 transistor (corresponding to...) Figure 4 The M terminal of ESD2 is electrically connected to the second ground terminal. The positive terminals of the first transient voltage suppression diode TVS1 and the second transient voltage suppression diode TVS2 are both electrically connected to the second ground terminal AGND. The negative terminals of the first transient voltage suppression diode TVS1 and the second transient voltage suppression diode TVS2 are electrically connected to the first output terminal and the second output terminal of the common mode inductor CMF1, respectively. Figure 4 The VDD and VIO terminals of the CAN transceiver chip U1 are both connected to VCC, and the VSS terminal of the CAN transceiver chip U1 is connected to the third ground terminal GND.

[0064] In the above embodiment, the main controller can communicate with the ambient light module via CAN. The common mode inductor CMF1 can filter and perform anti-interference processing on the CAN signal. The first fuse F1 and the second fuse F2 can cut off the circuit to protect the device when an overcurrent occurs. The second electrostatic discharge protection diode ESD2, the first transient voltage suppression diode TVS1, and the second transient voltage suppression diode TVS2 can suppress electrostatic discharge and transient voltage, protect the CAN communication interface from damage, and ensure that the main controller can stably send lighting control signals to the ambient light module, thereby achieving stable linkage between the car seat haptic feedback and the ambient light.

[0065] The CAN transceiver chip U1 serves as the core for converting digital signals to differential signals. Digital control signals (such as lighting parameter commands) output from the MCU's CAN transmit pin (TXD) are transmitted to the CAN transceiver chip U1, which converts them into differential signals (CANH / CANL differential pairs) conforming to the CAN protocol. These differential signals have anti-interference capabilities and can be transmitted over long distances in the automotive bus. Differential signals transmitted from external CAN buses (such as the vehicle's CAN network) enter the CAN transceiver chip U1 after passing through a common-mode inductor and a fuse. The CAN transceiver chip U1 restores these signals to digital signals and transmits them to the MCU's CAN receive pin via the RXD pin, enabling bidirectional communication between the ambient lighting module and the main controller (such as ambient lighting status feedback). The MCU's CAN enable control pin is connected to the enable pin of the CAN transceiver chip U1 via a fourth resistor R4 (current limiting protection), allowing the CAN transceiver chip U1 to be started or stopped via high or low levels (such as shutting down the chip in sleep mode to reduce power consumption). The common-mode inductor CMF1 is connected in series between the CAN transceiver chip U1 and the external bus. It can filter out common-mode interference on the bus (such as common-mode current generated by external electromagnetic radiation) and prevent interference signals from entering the CAN transceiver chip U1 and causing signal distortion. The third capacitor C3 and the fourth capacitor C4 (filter capacitors) are connected in parallel between the output terminal (CANH / CANL) of the common-mode inductor CMF1 and the second ground terminal AGND, respectively. They can filter out high-frequency differential-mode interference (such as spike pulses at the signal edge) in the bus transmission and make the differential signal waveform more stable. The fifth resistor R5 (termination matching resistor) is connected across CANH and CANL. Its resistance value matches the characteristic impedance of the CAN bus and can eliminate reflected waves in signal transmission and avoid communication errors caused by signal superposition. The first fuse F1 and the second fuse F2 are connected in series between the common-mode inductor CMF1 and the external CAN bus. When a short circuit occurs on the bus (such as a short circuit between CANH and the power supply) causing the current to exceed the rated value, the fuses quickly blow, cutting off the fault circuit and protecting the CAN transceiver chip U1 and MCU pins from being burned out. The second electrostatic discharge protection diode ESD2 is connected across CANH / CANL and the second ground terminal AGND, which can discharge instantaneous high voltages generated by human contact or environmental static electricity (such as ±15kV contact static electricity), preventing the CAN transceiver chip U1 from being electrostatically damaged. The first transient voltage suppression diode TVS1 and the second transient voltage suppression diode TVS2 are connected in parallel between CANH / CANL and the second ground terminal AGND. When a transient high voltage occurs on the bus (such as voltage fluctuations in the car battery or surges caused by load switching), the TVS diodes quickly conduct, clamping the voltage to a safe value (such as ≤36V), preventing high voltage from damaging bus devices. Vehicles may experience transient high voltage pulses caused by sudden drops in power load, inductive load switching, load dumping, electrostatic discharge, etc. If the interface is not protected, these surge voltages will directly impact the precision CAN transceiver chip U1, causing instantaneous damage and permanent failure.Ordinary consumer-grade CAN modules cannot operate for extended periods in this environment. As a critical connection point between the system and the vehicle network, the reliability of the CAN interface directly determines the availability of the "massage-light" linkage function. This highly reliable design avoids issues such as linkage failure and erratic light flashing caused by communication malfunctions, ensuring a core user experience.

[0066] Figure 5 This is a schematic diagram of the LIN communication interface circuit provided in an embodiment of this application. Figure 5 J3 is the external interface of the LIN communication interface circuit.

[0067] In an optional embodiment, such as Figure 5 As shown, the main controller includes a microcontroller unit (MCU), and the LIN communication interface includes: a LIN transceiver chip U2, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, a second diode D2, a third electrostatic discharge protection diode ESD3, and a ferrite bead B1. The RXD pin, TXD pin, enable pin EN, and reset output pin NRES of the LIN transceiver chip U2 are respectively connected to the corresponding pins of the MCU (e.g., ...). Figure 2 The LIN_Rx, LIN_Tx, LIN_EN, and LIN_RSTN pins are electrically connected; the fifth capacitor C5 is connected between the RXD pin of the LIN transceiver chip U2 and the third ground terminal GND; the sixth resistor R6 is connected between the enable pin EN of the LIN transceiver chip U2 and the first power supply terminal (e.g., ...). Figure 5 Between V5 and the first power supply terminal, the seventh resistor R7 is connected between the reset output pin NRES of the LIN transceiver chip U2 and the first power supply terminal; the power output pin of the LIN transceiver chip U2 is electrically connected to the third ground terminal GND through the sixth capacitor C6, and the seventh capacitor C7 is connected in parallel with the sixth capacitor C6. The power output pin of the LIN transceiver chip U2 is also electrically connected to the first end of the eighth resistor R8, and the other end of the eighth resistor R8 serves as the first power supply terminal, used to provide a preset voltage power supply; the power input pin of the LIN transceiver chip U2 is used to connect to a second power supply (such as V5). Figure 5The eighth capacitor C8 and the ninth capacitor C9 are connected in parallel between the power input pin of the LIN transceiver chip U2 and the third ground terminal GND; the LIN pin of the LIN transceiver chip U2 is electrically connected to the negative terminal of the second diode D2, and the positive terminal of the second diode D2 is electrically connected to the power input pin of the LIN transceiver chip U2 through the ninth resistor R9; the tenth capacitor C10 is connected between the LIN pin of the LIN transceiver chip U2 and the ground pin of the LIN transceiver chip U2; the ground pin of the LIN transceiver chip U2 is electrically connected to the third ground terminal GND; the LIN pin of the LIN transceiver chip U2 is electrically connected to the first terminal of the ferrite bead B1; and the second terminal of the ferrite bead B1 is connected to the external LIN bus (e.g., 12V). Figure 5 In the LIN_M section, the negative terminal of the third electrostatic discharge protection tube ESD3 is electrically connected to the second terminal of the magnetic bead B1, and the positive terminal of the third electrostatic discharge protection tube ESD3 is electrically connected to the third grounding terminal GND.

[0068] In the above embodiments, the LIN transceiver chip U2 in the LIN communication interface is connected to the MCU, and the settings of various resistors, capacitors, diodes, electrostatic protection tubes and ferrite beads B1 can ensure that the main controller and the ambient light module communicate stably and reliably based on the LIN bus, so that the ambient light module can present light colors and animation effects associated with the target massage level, thereby enhancing the richness and immersion of the driving experience.

[0069] The LIN transceiver chip U2 is the core, responsible for bidirectional conversion between the MCU's logic level signals (via the TXD and RXD pins) and the single-wire serial signals of the LIN bus. The MCU controls and monitors its status through the enable pin (EN) and the reset output pin (NRES). The power input pin of the LIN transceiver chip U2 is connected to a second power source (usually a vehicle battery or regulated power supply), where energy is stored and decoupled through the parallel eighth capacitor C8 and ninth capacitor C9, filtering out power supply noise. The voltage regulator integrated inside the LIN transceiver chip U2 generates a cleaner preset voltage (such as 5V or 3.3V). Figure 5V5 (5V) is output through the power output pin. This voltage is further filtered by the sixth capacitor C6 and the seventh capacitor C7, and then supplied to the MCU or other circuits via the eighth resistor R8 as the first power supply terminal, and is also used for the internal logic circuit of the chip. This provides a stable and clean reference power supply for the LIN communication-related pins of the MCU. The LIN bus requires pull-up. The second diode D2 and the ninth resistor R9 form a controlled pull-up path, where the second diode D2 prevents reverse voltage flow from the bus. The tenth capacitor C10 performs high-frequency filtering locally on the LIN pin to suppress noise at the pin of the LIN transceiver chip U2. The ferrite bead B1 is connected in series between the LIN pin and the external bus to suppress high-frequency common-mode noise, prevent external interference from entering, and limit the high-frequency noise generated by this node from radiating to the bus. The third electrostatic discharge protection diode ESD3 is connected in parallel between the bus input and the third ground terminal GND to quickly discharge transient high voltages such as electrostatic discharge (ESD) on the bus, protecting the downstream LIN transceiver chip U2. The interface signals on the MCU side have also been optimized. For example, a fifth capacitor C5 is added to the RXD pin for filtering, and the enable (EN) and reset (NRES) pins are pulled up using a sixth resistor R6 and a seventh resistor R7 to ensure signal stability. This embodiment integrates all necessary protection, filtering, and conditioning measures within a limited cost, ensuring that the LIN interface fully meets or even exceeds the automotive industry's requirements for LIN node reliability, guaranteeing stable operation of the "massage-light" linkage function even in entry-level or economy vehicles. Through the collaborative design of the ferrite bead B1, RC network, and multi-stage power supply filtering, even on a single-wire LIN bus with weak anti-interference capabilities, complex electromagnetic interference within the vehicle can be effectively suppressed, ensuring high robustness and low bit error rate transmission of critical commands such as lighting control signals, making the low-cost linkage solution equally reliable.

[0070] Figure 6 This is a schematic diagram of the PWM drive interface circuit provided in an embodiment of this application. Figure 6 J4 is the external interface of the PWM drive interface circuit.

[0071] In an optional embodiment, such as Figure 6 As shown, the main controller includes a microcontroller unit (MCU), and the PWM drive interface includes: a first transistor Q2, a second transistor Q3, a third transistor Q4, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, an eleventh capacitor C11, a twelfth capacitor C12, and a thirteenth capacitor C13. The MCU's red LED control pin (e.g.) Figure 2The transistor Q2 is electrically connected to the base of the first transistor Q2 via the tenth resistor R10. The eleventh resistor R11 is connected between the base of the first transistor Q2 and the third ground terminal GND. The emitter of the first transistor Q2 is electrically connected to the third ground terminal GND. The collector of the first transistor Q2 is electrically connected to the first end of the twelfth resistor R12. The second end of the twelfth resistor R12 is electrically connected to the third ground terminal GND via the eleventh capacitor C11. The green LED control pin of the MCU (such as...) Figure 2 The transistor Q3 is electrically connected to the base of the second transistor Q3 through the thirteenth resistor R13. The fourteenth resistor R14 is connected between the base of the second transistor Q3 and the third ground terminal GND. The emitter of the second transistor Q3 is electrically connected to the third ground terminal GND. The collector of the second transistor Q3 is electrically connected to the first end of the fifteenth resistor R15. The second end of the fifteenth resistor R15 is electrically connected to the third ground terminal GND through the twelfth capacitor C12. The blue LED control pin of the MCU (such as...) Figure 2 (B_C) is electrically connected to the base of the third transistor Q4 through the sixteenth resistor R16. The seventeenth resistor R17 is connected between the base of the third transistor Q4 and the third ground terminal GND. The emitter of the third transistor Q4 is electrically connected to the third ground terminal GND. The collector of the third transistor Q4 is electrically connected to the first end of the eighteenth resistor R18. The second end of the eighteenth resistor R18 is electrically connected to the third ground terminal through the thirteenth capacitor C13. The second end of the twelfth resistor R12 (corresponding to...) Figure 6 R_LED in the middle), the second terminal of the fifteenth resistor R15 (corresponding to Figure 6 G_LED in the middle), the second terminal of the eighteenth resistor R18 (corresponding to Figure 6 The B_LED in the LED module is electrically connected to the red, green, and blue signal terminals of the LED module, respectively.

[0072] In the above embodiments, the microcontroller unit (MCU) in the main controller can transmit control signals to the red, green, and blue signal terminals of the LED module based on the PWM drive interface and using a circuit composed of multiple transistors, resistors, and capacitors. This enables precise control of the ambient light color and animation effects, enhances the linkage between the car seat massage function and the ambient light, improves the immersiveness and richness of the driving experience, and allows users to operate from the side of the seat or the armrest, avoiding distraction when switching interfaces and improving operational flexibility.

[0073] Three independent transistor drive branches correspond to the red (R), green (G), and blue (B) signal terminals of the LED module, respectively, to achieve precise conversion of "MCU-PWM signal-LED color / brightness". The red, green, and blue LED control pins of the MCU output independent PWM (pulse width modulation) signals. The duty cycle (high level time percentage) of the PWM signal directly corresponds to the brightness of the LED (e.g., 100% duty cycle corresponds to maximum brightness, 0% corresponds to off). Different combinations of duty cycles of PWM signals of different colors can be adjusted to produce a variety of RGB mixed colors. In each color branch, the PWM signal is transmitted to the base of the first transistor Q2 via a current-limiting resistor (such as the tenth resistor R10 in the red branch), controlling the conduction / cutoff of the first transistor Q2. When the PWM signal is high, the first transistor Q2 is turned on, and current flows from the LED module power supply terminal (such as 12V / 5V) through the LED, the current-limiting resistor (such as the twelfth resistor R12 in the red branch), the collector-emitter junction of the first transistor Q2, to the third ground terminal GND, and the LED lights up. When the PWM signal is low, the first transistor Q2 is turned off, the circuit is de-energized, and the LED turns off. At the same time, the base pull-down resistor (such as the eleventh resistor R11 in the red branch) ensures that the first transistor Q2 is stably cut off when there is no PWM signal, preventing the LED from lighting up accidentally. A filter capacitor (such as the eleventh capacitor C11 in the red branch) is connected in parallel after the current-limiting resistor in each branch to filter out the high-frequency ripple of the PWM signal, prevent LED brightness flickering, and ensure that the light color and animation effects (such as gradients and breathing) are presented smoothly. The MCU can output different color commands by adjusting the duty cycle combination of red, green and blue PWM signals; the MCU can also achieve animation effects by dynamically adjusting the duty cycle or frequency of the PWM signal, and the LED module can present a continuous animation following the signal changes.

[0074] It should be noted that, Figure 2 It also includes a power module, which provides the power required for the main control module to operate, and provides a stable voltage through a voltage regulator chip. Figure 2 Vin, Vout, and GND are the input, output, and ground terminals of the voltage regulator chip, respectively. VCC is the output terminal of the power module, used to provide operating power to other modules (such as the main control module). OSC1 and OSC2 are the two ends of the crystal oscillator. Figure 2 J1 in the diagram is the external interface of the power supply module. Common peripheral configuration circuits of the MCU in the main control module and some peripheral circuits of the communication interface module are not described. Figures 2-6 The first grounding terminal EGND represents the chassis / protective ground, the second grounding terminal AGND represents the analog ground, and the third grounding terminal GND represents the digital / signal ground.

[0075] In an optional embodiment, the LED module in the ambient light module is arranged in one of the following areas inside the vehicle cockpit: door trim, instrument panel, center console or footwell area.

[0076] In the above embodiment, arranging the LED module in the ambient light module in the door trim, instrument panel, center console or footwell area of the vehicle cockpit enables the user to visually observe the light color and animation effects associated with the massage gear at different positions, enhancing visual feedback and improving the immersion and multi-sensory collaborative interactivity of the driving and riding experience.

[0077] The arrangement position of the LED module forms a "tactile-visual" spatial coordination with the seat massage function. When the main controller generates a light control signal according to the massage gear, the LED modules arranged in the above areas synchronously present the associated light effects, covering the main visual field range inside the user's cockpit and strengthening the global联动感知 of "massage action and light effect". Arranging the联动灯光 in the door trim, instrument panel, center console, and footwell areas surrounding the driver / occupant can visually create an environmental atmosphere that呼应 the tactile massage, surrounding the occupant with visual information of the "massage state" and greatly enhancing the immersive experience.

[0078] This application also provides a control method for the vehicle seat tactile feedback and ambient light linkage system, which is applied to the vehicle seat tactile feedback and ambient light linkage system in any of the foregoing embodiments, as Figure 7 shown, the process includes:

[0079] Step S701, receiving a gear adjustment signal generated by the user's start and gear adjustment operations on the seat massage function through the touch input module;

[0080] Step S702, analyzing the gear adjustment signal to obtain the target massage gear, and generating corresponding massage control signals and light control signals according to the target massage gear;

[0081] Step S703, synchronously execute the following steps: controlling the seat massage execution module to perform massage actions corresponding to the target massage gear according to the massage control signal; controlling the ambient light module to present a predetermined light color and animation effect associated with the target massage gear according to the light control signal.

[0082] It should be noted that: The system and method embodiments provided in the above embodiments belong to the same concept. For other method embodiments, they correspond to the foregoing system embodiments. For other technical features, refer to the previous embodiments and will not be elaborated here.

[0083] The above description is merely an exemplary embodiment of this disclosure and should not be construed as limiting the scope of this disclosure. Any equivalent changes and modifications made in accordance with the teachings of this disclosure shall still fall within the scope of this disclosure. Other embodiments of this disclosure will be readily apparent to those skilled in the art upon consideration of the disclosure herein.

[0084] This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art that are not described in this disclosure.

Claims

1. A car seat haptic feedback and ambient lighting linkage system, characterized in that, include: A touch input module is used to receive user input for activating and adjusting the massage function of the seat and to generate corresponding adjustment signals. The touch input module is located on the side or armrest of the car seat. The main controller, electrically connected to the touch input module, is used to receive and parse the gear adjustment signal to obtain the target massage gear, and generate corresponding massage control signals and light control signals according to the target massage gear; The seat massage execution module is electrically connected to the main controller and is used to respond to the massage control signal and execute massage actions corresponding to the target massage level. An ambient light module, electrically connected to the main controller, is used to respond to the light control signal and present light colors and animation effects associated with the target massage level; The main controller is configured to: synchronously control the seat massage execution module to perform massage actions corresponding to the target massage level, and control the light color and animation effects of the ambient light module, based on the level adjustment signal input by the touch input module; The main controller includes a microcontroller unit (MCU), and the seat massage execution module includes a massage drive circuit and a massage actuator. The massage drive circuit drives the massage actuator. The input terminal of the massage drive circuit is connected to the MCU to receive the massage control signal. The massage actuator is a massage motor or an air pump. The massage driving circuit includes: a first NMOS transistor, a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, a first diode, and a first electrostatic discharge (ESD) protection diode. The first terminal of the first resistor is connected to the massage driving control pin of the MCU; the second terminal of the first resistor is electrically connected to the gate of the first NMOS transistor; the second resistor is connected between the gate of the first NMOS transistor and a first ground terminal; the third resistor is connected between the source of the first NMOS transistor and the first ground terminal; the first capacitor is connected between the drain of the first NMOS transistor and the first ground terminal; the second capacitor and the third resistor are connected in parallel; the anode of the first diode is electrically connected to the drain of the first NMOS transistor; the cathode of the first diode is electrically connected to the positive terminal of the car battery; the first ESD protection diode is connected between the drain of the first NMOS transistor and the first ground terminal; the source of the first NMOS transistor is also electrically connected to the massage current detection pin of the MCU. The massage current detection pin is used to collect real-time current signals when the massage motor is working; the massage actuator is connected to both ends of the first diode. The ambient lighting module includes the following communication interfaces: a Controller Area Network (CAN) communication interface; a Local Area Network (LIN) communication interface; and a Pulse Width Modulation (PWM) drive interface. The ambient lighting module also includes an LED module. The main controller is configured to send the lighting control signal to the ambient lighting module via the CAN communication interface, the LIN communication interface, or the PWM drive interface, causing the LED module to display the lighting color and animation effects. After generating the lighting control signal based on the target massage level, the main controller selects an appropriate communication interface to send the signal according to the cabin hardware architecture. After receiving the signal, the LED module parses the signal instructions through its internal drive circuit, controlling the on / off state and brightness output of different colored LED beads, ultimately presenting the lighting color and animation effects associated with the massage level. The main controller includes a microcontroller unit (MCU). The CAN communication interface includes a CAN transceiver chip, a common-mode inductor, a fourth resistor, a fifth resistor, a third capacitor, a fourth capacitor, a first fuse, a second fuse, a second ESD protection diode, a first transient voltage suppressor diode, and a second transient voltage suppressor diode. The TXD and RXD terminals of the CAN transceiver chip are connected to the CAN transmit and CAN receive pins of the MCU, respectively. The enable terminal of the CAN transceiver chip is electrically connected to the CAN enable control pin of the MCU through the fourth resistor. The differential output terminals CANH and CANL of the CAN transceiver chip are electrically connected to the first and second input terminals of the common-mode inductor, respectively. The first output terminal of the common-mode inductor is connected to CANH in an external CAN bus through the first fuse. The second output terminal of the common-mode inductor is connected to the second fuse through the second resistor. The fuse is connected to the CANL terminal of the external CAN bus; the third capacitor is connected between the first output terminal and the second ground terminal of the common mode inductor; the fourth capacitor is connected between the second output terminal and the second ground terminal of the common mode inductor; the fifth resistor is connected between the first output terminal and the second output terminal of the common mode inductor; the first and second terminals of the second electrostatic discharge transistor are electrically connected to the first and second output terminals of the common mode inductor, respectively; the common terminal of the second electrostatic discharge transistor is electrically connected to the second ground terminal; the anodes of the first and second transient voltage suppression diodes are both electrically connected to the second ground terminal; the cathodes of the first and second transient voltage suppression diodes are electrically connected to the first and second output terminals of the common mode inductor, respectively.

2. The system according to claim 1, characterized in that, The touch input module includes: A strip-shaped touch sensing unit is used to sense the user's click or swipe operation to generate the gear adjustment signal and transmit it to the main controller; The vibration feedback unit, electrically connected to the main controller, is used to generate vibration to provide tactile feedback to the user when the strip touch sensing unit senses a valid operation.

3. The system according to claim 1, characterized in that, The main controller has a pre-stored mapping table between massage levels and light parameters. The light parameters include light color, animation effect type, and brightness. The mapping table is configured such that the higher the massage level, the higher the corresponding light brightness. The main controller is also configured to query the mapping table according to the target massage level to determine the corresponding target light parameters, and generate the light control signal based on the target light parameters.

4. The system according to claim 1, characterized in that, The LIN communication interface includes: a LIN transceiver chip, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, a second diode, a third electrostatic discharge protection diode, and a ferrite bead. The RXD pin, TXD pin, enable pin EN, and reset output pin NRES of the LIN transceiver chip are electrically connected to the corresponding pins of the MCU. The fifth capacitor is connected between the RXD pin of the LIN transceiver chip and the third ground terminal. The sixth resistor is connected between the enable pin EN of the LIN transceiver chip and the first power supply terminal. The seventh resistor is connected between the reset output pin NRES of the LIN transceiver chip and the first power supply terminal. The power output pin of the LIN transceiver chip is electrically connected to the third ground terminal through the sixth capacitor. The seventh capacitor is connected in parallel with the sixth capacitor. The power output pin of the LIN transceiver chip is also electrically connected to the first end of the eighth resistor. The other end of the eighth resistor serves as the first power supply terminal, used to provide a preset voltage power supply. The power input pin of the LIN transceiver chip is used to connect to a second power supply. The eighth capacitor and the ninth capacitor are connected in parallel between the power input pin of the LIN transceiver chip and the third ground terminal. The LIN pin of the LIN transceiver chip is electrically connected to the negative terminal of the second diode. The positive terminal of the second diode is electrically connected to the power input pin of the LIN transceiver chip through the ninth resistor. The tenth capacitor is connected between the LIN pin of the LIN transceiver chip and the ground pin of the LIN transceiver chip. The ground pin of the LIN transceiver chip is electrically connected to the third ground terminal. The LIN pin of the LIN transceiver chip is electrically connected to the first end of the ferrite bead. The second end of the ferrite bead is connected to an external LIN bus. The negative terminal of the third electrostatic discharge tube is electrically connected to the second end of the ferrite bead. The positive terminal of the third electrostatic discharge tube is electrically connected to the third ground terminal.

5. The system according to claim 1, characterized in that, The PWM drive interface includes: a first transistor, a second transistor, a third transistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, an eleventh capacitor, a twelfth capacitor, and a thirteenth capacitor, wherein... The red LED control pin of the MCU is electrically connected to the base of the first transistor through the tenth resistor. The eleventh resistor is connected between the base of the first transistor and the third ground terminal. The emitter of the first transistor is electrically connected to the third ground terminal. The collector of the first transistor is electrically connected to the first end of the twelfth resistor. The second end of the twelfth resistor is electrically connected to the third ground terminal through the eleventh capacitor. The green LED control pin of the MCU is electrically connected to the base of the second transistor through the thirteenth resistor. The fourteenth resistor is connected between the base of the second transistor and the third ground terminal. The emitter of the second transistor is electrically connected to the third ground terminal. The collector of the second transistor is electrically connected to the first end of the fifteenth resistor. The second end of the fifteenth resistor is electrically connected to the third ground terminal through the twelfth capacitor. The blue LED control pin of the MCU is electrically connected to the base of the third transistor through the sixteenth resistor. The seventeenth resistor is connected between the base of the third transistor and the third ground terminal. The emitter of the third transistor is electrically connected to the third ground terminal. The collector of the third transistor is electrically connected to the first end of the eighteenth resistor. The second end of the eighteenth resistor is electrically connected to the third ground terminal through the thirteenth capacitor. The second end of the twelfth resistor, the second end of the fifteenth resistor, and the second end of the eighteenth resistor are respectively electrically connected to the red, green, and blue signal terminals of the LED module.

6. A control method for a car seat haptic feedback and ambient lighting linkage system, characterized in that, The system applied to the automotive seat haptic feedback and ambient lighting linkage system according to any one of claims 1 to 5 includes: Receives the gear adjustment signal generated by the user's operation of starting and adjusting the seat massage function through the touch input module; The gear adjustment signal is analyzed to obtain the target massage gear, and a corresponding massage control signal and light control signal are generated based on the target massage gear; The following steps will be executed simultaneously: The massage control signal controls the seat massage execution module to perform massage actions corresponding to the target massage level; the lighting control signal controls the ambient lighting module to display a predetermined light color and animation effect associated with the target massage level.

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