Vehicle-mounted reading lamp control system and vehicle

Abstract

The invention provides a vehicle-mounted reading lamp control system and a vehicle. The control system comprises a first domain controller, a plurality of vehicle-mounted reading lamps and a vehicle machine, wherein the first domain controller is in communication connection with the vehicle machine; the first domain controller is used for receiving a first control instruction sent by the vehicle machine; the first domain controller is electrically connected with the plurality of vehicle-mounted reading lamps; and the first domain controller is used for controlling the display effect of the corresponding vehicle-mounted reading lamp based on the received first control instruction.

Description

Technical Field

[0001] This application relates to the field of vehicle electronic control technology, specifically to an in-vehicle reading light control system and a vehicle. Background Technology

[0002] With the development of automotive intelligence, in-vehicle lighting systems are no longer limited to basic on / off control, but are gradually evolving towards adjustable brightness, multi-mode control, and intelligent linkage. Reading lights, as one of the commonly used in-vehicle lighting devices, directly impact user experience and the overall level of vehicle intelligence through their control methods. However, traditional reading light control systems, which achieve on / off control through mechanical switches or simple circuits, struggle to meet the current demands of vehicles for personalized and scenario-based lighting. Summary of the Invention

[0003] This application provides a vehicle-mounted reading light control system and vehicle, which helps to reduce the hardware cost of the vehicle-mounted reading light control system, supports collaborative and unified management, and can improve the reliability and maintenance convenience of the vehicle-mounted reading light control system.

[0004] In a first aspect, embodiments of this application provide a vehicle-mounted reading light control system, the control system comprising: a first domain controller, a plurality of vehicle-mounted reading lights, and a vehicle-mounted unit; wherein, the first domain controller is communicatively connected to the vehicle-mounted unit; the first domain controller is configured to receive a first control command sent by the vehicle-mounted unit; the first domain controller is electrically connected to the plurality of vehicle-mounted reading lights; the first domain controller is configured to control the display effect of the corresponding vehicle-mounted reading light based on the received first control command.

[0005] It is understood that the vehicle reading light control system provided in this application embodiment offers a driver separation architecture, which moves the control logic for the vehicle reading lights to the first domain controller. This eliminates the need for each vehicle reading light to integrate a microcontroller; multiple vehicle reading lights can be controlled through the first domain controller. This reduces the hardware cost of the vehicle reading light control system and supports the collaborative and unified management of multiple vehicle reading lights, thereby improving the reliability and maintenance convenience of the vehicle reading light control system.

[0006] In some embodiments, the vehicle-mounted reading light includes: a first light-emitting diode (LED) group, a second LED group, and a self-resetting switch; wherein, a first terminal of the first domain controller is electrically connected to a first terminal of the self-resetting switch, a second terminal of the first domain controller is electrically connected to the first LED group, and a third terminal of the first domain controller is electrically connected to the second LED group; the second terminal of the self-resetting switch is grounded; the first domain controller is configured to, upon determining that the self-resetting switch is open, control the display effect of the first LED group and / or the second LED group in the corresponding vehicle-mounted reading light based on a received first control command; the first LED group and the second LED group display different colors.

[0007] It is understood that in the vehicle reading light control system provided in this application embodiment, the vehicle reading light includes a dual-color LED light group and a self-resetting switch. Users can select the vehicle reading light that can be controlled by the first domain controller through the self-resetting switch, and can control the display effect of the first LED light group and / or the second LED light group in the corresponding vehicle reading light through the first control signal. This is beneficial for meeting the diverse lighting needs of users and improving the user experience.

[0008] In some embodiments, the control system further includes a second domain controller, wherein the second domain controller is communicatively connected to the vehicle infotainment system; the second domain controller is configured to receive a second control command sent by the vehicle infotainment system; the second domain controller is communicatively connected to a first domain controller; the second domain controller is configured to send the second control command to the first domain controller; the first domain controller is different from the second domain controller; the first domain controller is configured to control the display effect of the corresponding vehicle reading light based on the received second control command.

[0009] It is understood that in the vehicle-mounted reading light control system provided in this application embodiment, the vehicle-mounted unit can also send a second control command to a second domain controller, which in turn sends the second control command to a first domain controller. This allows the first domain controller to control the display effect of the corresponding vehicle-mounted reading light based on the received second control command. Thus, even when the vehicle-mounted unit cannot send the first control command to the first domain controller, control of the vehicle-mounted reading light can still be achieved.

[0010] In some embodiments, the second domain controller is further configured to send a second control instruction to the first domain controller when it is determined that a user has entered the vehicle, the second control instruction being configured to instruct the display effect of the corresponding vehicle reading light to be a first display effect; or, when it is determined that a user has left the vehicle, send a second control instruction to the first domain controller, the second control instruction being configured to instruct the display effect of the corresponding vehicle reading light to be a second display effect; the first display effect is different from the second display effect.

[0011] It is understood that in the vehicle reading light control system provided in this application embodiment, the second domain controller sends a second control command indicating different display effects to the first domain controller based on the user's entry into or exit from the vehicle. This enables the function of welcoming and seeing off guests, enhancing the driving experience. Furthermore, it reduces manual operation by the user, thereby achieving intelligent and automated control of the vehicle reading lights and enhancing the comfort and technological feel of the vehicle's interior system.

[0012] In some embodiments, the second domain controller is further configured to send a second control command to the first domain controller when it is determined that the user is driving while fatigued; the second control command is configured to instruct the current display effect of the vehicle reading light corresponding to the user to change to a target display effect; the target display effect is different from the current display effect.

[0013] It is understood that in the vehicle reading light control system provided in this application embodiment, when the second domain controller detects user fatigue while driving, it adjusts the current display effect of the vehicle reading light to a target display effect that is different from the current display effect. In this way, without interfering with the driver's driving operations, adjusting the display effect of the vehicle reading light enhances the driver's concentration, thereby helping to reduce the risk of accidents caused by fatigue driving, effectively improving driving safety, and ultimately enhancing the overall vehicle intelligence level.

[0014] In some embodiments, the second domain controller is further configured to determine the display brightness of the corresponding vehicle reading light based on the vehicle's current brightness information; and send the second control command to the first domain controller; the second control command includes the display brightness of the corresponding vehicle reading light.

[0015] It is understood that in the vehicle reading light control system provided in this application embodiment, the second domain controller can determine the display brightness of the corresponding vehicle reading light based on the current brightness information of the vehicle, and send the display brightness to the first domain controller through a second control command. In this way, automatically adjusting the brightness of the vehicle reading light based on environmental perception helps the vehicle reading light adapt to different lighting conditions, thereby improving the overall vehicle intelligence level and user experience.

[0016] In some embodiments, the vehicle infotainment system is configured to convert a voice command into the first control command and send the first control command to the first domain controller; or, the vehicle infotainment system is configured to convert information received by the vehicle display screen representing the display effect of at least one of the vehicle reading lights into the first control command and send the first control command to the first domain controller.

[0017] It is understood that in the vehicle reading light control system provided in this application embodiment, the vehicle's infotainment system converts user-inputted voice commands or information received from the vehicle's display screen regarding the vehicle reading light into a first control command, and sends the first command to a first domain controller. The first domain controller then controls the display effect of the corresponding vehicle reading light according to the first control command. This enables flexible control of the vehicle reading light, effectively reducing the user's reliance on physical buttons, thereby improving the convenience and intelligence of in-vehicle interaction.

[0018] In some embodiments, the first domain controller is further configured to control the display effect of the vehicle reading light to a third display effect when it is determined that the vehicle door is open; and to control the display effect of the vehicle reading light to a fourth display effect when it is determined that the vehicle door is closed; wherein the third display effect is different from the fourth display effect.

[0019] It is understood that in the vehicle reading light control system provided in this application embodiment, when the first domain controller determines that the vehicle door is open, it controls the display effect of the vehicle reading light to a third display effect; when the first domain controller determines that the vehicle door is closed, it controls the display effect of the vehicle reading light to a fourth display effect, which is different from the third display effect. This allows the vehicle reading light control system to automatically adjust the display effect of the vehicle reading light according to changes in the vehicle door status, enhancing the scene adaptability of the vehicle reading light control system and achieving more intelligent, energy-saving, and user-friendly lighting management.

[0020] In some embodiments, the first domain controller is a region controller; the second domain controller is a smart driving domain controller.

[0021] It is understood that in the vehicle reading light control system provided in this application embodiment, the control logic for the vehicle reading lights is moved up to the area controller, and the intelligent driving domain controller can call the area controller according to the needs of the scenario to control the vehicle reading lights. This enhances the functional integration of the entire vehicle, enables cross-domain collaborative control, and further provides technical support for expanding more software-based services and user experience scenarios.

[0022] Secondly, embodiments of this application provide a vehicle that includes the vehicle-mounted reading light control system as described in the first aspect. Attached Figure Description

[0023] Figure 1 A schematic diagram of the structure of a vehicle-mounted reading light control system provided in this application embodiment. Figure 1 ; Figure 2 A schematic diagram of the structure of a vehicle-mounted reading light control system provided in this application embodiment. Figure 2 ; Figure 3 A schematic diagram of the structure of a vehicle-mounted reading light control system provided in this application embodiment. Figure 3 ; Figure 4 A schematic diagram of the structure of a vehicle-mounted reading light control system provided in this application embodiment. Figure 4 ; Figure 5 A diagram illustrating the on / off state of a vehicle reading light provided in an embodiment of this application; Figure 6 This is a structural schematic diagram of a vehicle provided in an embodiment of this application.

[0024] It should be noted that the terms "first" and "second" mentioned above are only used to distinguish between different options and do not represent the degree of superiority or inferiority of the options or their priority in the implementation process. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In one related technology, a distributed vehicle reading light control architecture is provided, in which each lighting module integrates a microcontroller unit (MCU) and receives switching signals through a Local Interconnect Network (LIN) bus or hardwired to realize functions such as brightness adjustment, door opening to turn on the light, door closing delay to turn off the light, and voice control of the light.

[0027] However, the inventors of this application discovered the following defects in the aforementioned related technologies during their research and analysis: (1) High cost: Each lamp needs to be equipped with MCU, crystal oscillator, reset circuit, etc., and the material cost (BOM) of a single lamp is relatively high; (2) Dispersed control: Each lamp operates independently, making it difficult to achieve cross-domain multi-lamp collaborative control.

[0028] In view of this, this application provides a vehicle-mounted reading light control system. Figure 1 A schematic diagram of the structure of a vehicle-mounted reading light control system provided in this application embodiment. Figure 1 ,like Figure 1 As shown, the vehicle reading light control system 10 includes: a first domain controller 101, and multiple vehicle reading lights 102 ( Figure 1 Only one is shown in the image) and vehicle-mounted system 103; among them, The first domain controller 101 is communicatively connected to the vehicle infotainment system 103; the first domain controller 101 is used to receive the first control command sent by the vehicle infotainment system 103; The first domain controller 101 is electrically connected to multiple vehicle reading lights 102; the first domain controller 101 is used to control the display effect of the corresponding vehicle reading light 102 based on the received first control command.

[0029] It is understood that the vehicle reading light control system provided in this application embodiment offers a driver separation architecture, which moves the control logic for the vehicle reading light 102 to the first domain controller 101. This eliminates the need for each vehicle reading light 102 to integrate an MCU; multiple vehicle reading lights 102 can be controlled through the first domain controller 101. This reduces the hardware cost of the vehicle reading light control system 10 and supports the collaborative and unified management of multiple vehicle reading lights 102, thereby improving the reliability and maintenance convenience of the vehicle reading light control system 10.

[0030] It should be understood that the first domain controller 101 is not limited in the embodiments of this application. In some embodiments, the first domain controller 101 is a newly integrated domain controller. In other embodiments, the first domain controller 101 is any domain controller in the vehicle system. It should be understood that in the embodiments of this application, when the first domain controller 101 is any domain controller in the vehicle system, the computing power utilization rate of that domain controller is less than a utilization threshold.

[0031] In this embodiment, the communication connection is not limited. In some embodiments, the communication connection is a Controller Area Network (CAN) bus connection. In this embodiment, the electrical connection is also not limited. In some embodiments, the electrical connection is a hardwired connection.

[0032] It should be understood that, in this embodiment of the application, the vehicle infotainment system 103 is not limited. The vehicle infotainment system 103 is a device installed inside a car, used to realize information communication between the people inside the car, the vehicle itself, and between the vehicle and the outside world. In some embodiments, the vehicle infotainment system 103 includes an in-vehicle display screen, and the vehicle infotainment system 103 can realize interaction with the user based on the in-vehicle display screen.

[0033] In this embodiment, the first control command is not limited. In some embodiments, the first control command carries information indicating the display effect of at least one vehicle-mounted reading light 102. In this embodiment, the display effect is not limited. In some embodiments, the display effect includes: light brightness, light color, light flicker frequency, light gradient time, color temperature, etc.

[0034] In some embodiments, Figure 2 A schematic diagram of the structure of a vehicle-mounted reading light control system provided in this application embodiment. Figure 2 ,like Figure 2 As shown, the vehicle-mounted reading light 102 includes: a first light-emitting diode (LED) light group 201, a second LED light group 202, and a self-resetting switch 203; wherein, The first terminal of the first domain controller 101 is electrically connected to the first terminal of the self-resetting switch 203, the second terminal of the first domain controller 101 is electrically connected to the first LED light group 201, and the third terminal of the first domain controller 101 is electrically connected to the second LED light group 202; the second terminal of the self-resetting switch 203 is grounded. The first domain controller 101 is used to control the display effect of the first LED light group 201 and / or the second LED light group 202 in the corresponding vehicle reading light 102 based on the received first control command when the self-resetting switch 203 is determined to be open; the first LED light group 201 and the second LED light group 202 display colors are different.

[0035] It is understood that in the vehicle reading light control system provided in this application embodiment, the vehicle reading light 102 includes a dual-color LED light group and a self-resetting switch 203. Users can select the vehicle reading light 102 that can be controlled by the first domain controller 101 through the self-resetting switch 203, and can control the display effect of the first LED light group 201 and / or the second LED light group 202 in the corresponding vehicle reading light 102 through the first control signal. This is beneficial for meeting the diverse lighting needs of users and improving the user experience.

[0036] Furthermore, in some embodiments, the vehicle-mounted reading light further includes: a dual-channel constant current driven low dropout regulator (LDO); the dual-channel constant current driven LDO is used to receive a pulse width modulation (PWM) signal from the first domain controller 101 and drive the corresponding LED.

[0037] It should be understood that, in the embodiments of this application, the display colors of the first LED light group 201 and the second LED light group 202 are not limited. In some embodiments, the display color of the first LED light group 201 is yellow, with a color temperature of 2700 Kelvin (K)–3500K; the display color of the second LED light group 202 is white, with a color temperature of 5000K–6500K. Here, color temperature is a physical quantity describing the color characteristics of a light source, representing the temperature at which the light emitted by a black body (ideal radiator) matches the color of the light source at a given temperature.

[0038] In this embodiment, the self-resetting switch 203 is not limited. The self-resetting switch 203 is a physical switch with the characteristic of automatically restoring the initial state. The self-resetting switch 203 usually has a mechanical spring or spring structure inside, which will automatically spring back to the original position after being pressed by the vehicle user. The self-resetting switch does not require manual holding.

[0039] In some embodiments, the self-resetting switch 203 is connected to a general purpose input / output (GPIO) pin in the first domain controller 101; the GPIO pin in the first domain controller 101 is the first terminal of the first domain controller. The first domain controller 101 is used to detect the switch signal based on the GPIO pin to determine whether the corresponding vehicle reading light 102 is turned on.

[0040] It should be understood that the in-vehicle reading light 102 is not limited in the embodiments of this application. The in-vehicle reading light 102 is a device installed inside a vehicle, mainly used to provide reading illumination for occupants when there is insufficient light. In some embodiments, the in-vehicle reading light 102 is installed on the top of the driver's seat, the center top of the rear seat, and / or on both sides of the front seats.

[0041] In some embodiments, Figure 3 A schematic diagram of the structure of a vehicle-mounted reading light control system provided in this application embodiment. Figure 3 ,like Figure 3 As shown, the vehicle reading light control system 10 also includes a second domain controller 301, wherein, The second domain controller 301 is communicatively connected to the vehicle infotainment system 103; the second domain controller 301 is used to receive the second control command sent by the vehicle infotainment system 103. The second domain controller 301 is communicatively connected to the first domain controller 101; the second domain controller 301 is used to send the second control command to the first domain controller 101; the first domain controller 101 and the second domain controller 301 are different. The first domain controller 101 is used to control the display effect of the corresponding vehicle reading light 102 based on the received second control command.

[0042] It is understood that in the vehicle-mounted reading light control system provided in this application embodiment, the vehicle unit 103 can also send a second control command to the second domain controller 301, which in turn sends the second control command to the first domain controller 101. This allows the first domain controller 101 to control the display effect of the corresponding vehicle-mounted reading light 102 based on the received second control command. Thus, even when the vehicle unit 103 cannot send the first control command to the first domain controller 101, control of the vehicle-mounted reading light 102 can still be achieved.

[0043] It should be understood that the second domain controller 301 is not limited in this embodiment, and the second domain controller 301 is different from the first domain controller 101. The second domain controller 301 is used to process second control commands from the vehicle infotainment system 103. In some embodiments, the second domain controller 301 establishes a communication connection with the vehicle infotainment system through a CAN bus, Ethernet, or other communication protocols to achieve information interaction.

[0044] In this embodiment, the second domain controller 301 acts as a relay station, forwarding the second control command sent by the vehicle's infotainment system to the first domain controller 101 at the execution end. For example, when a user adjusts the dome light color through the vehicle's infotainment system interface, the vehicle's infotainment system generates a second control command. The second domain controller 301 forwards the second control command to the first domain controller 101, and the first domain controller 101 controls the display effect of the vehicle's reading light 102 to adjust the dome light color to the color specified by the user.

[0045] In some embodiments, the second domain controller 301 is further configured to send a second control command to the first domain controller 101 when it is determined that a user has entered the vehicle, the second control command being configured to instruct the display effect of the corresponding vehicle reading light 102 to be a first display effect; or, when it is determined that a user has left the vehicle, send a second control command to the first domain controller 101, the second control command being configured to instruct the display effect of the corresponding vehicle reading light 102 to be a second display effect; the first display effect is different from the second display effect.

[0046] It is understood that in the vehicle reading light control system provided in this application embodiment, the second domain controller 301 sends a second control command indicating different display effects to the first domain controller 101 based on the user's entry into or exit from the vehicle. This enables the function of welcoming and seeing off guests, enhancing the driving experience. Furthermore, it reduces manual operation by the user, thereby achieving intelligent and automated control of the vehicle reading light 102 and enhancing the comfort and technological feel of the vehicle's interior system.

[0047] It should be understood that the specific implementation method of the second domain controller 301 determining whether a user enters or leaves the vehicle is not limited in the embodiments of this application. In some embodiments, the second domain controller 301 collects data on the in-vehicle environment and determines whether a user enters or leaves the vehicle based on the collected image data. In other embodiments, the second domain controller 301 determines whether a user enters or leaves the vehicle based on a switch sensor installed on the door and a pressure sensor and / or weight sensor installed on the seat. In still other embodiments, the second domain controller 301 determines whether a user enters or leaves the vehicle based on the vehicle status, wherein the vehicle status includes whether the engine is off, etc.

[0048] In this embodiment, the first display effect and the second display effect are not limited. In some embodiments, the first display effect is that the vehicle reading light 102 at the user's location is turned on, and the second display effect is that the vehicle reading light 102 at the user's location is turned off. In other embodiments, the first display effect is that the vehicle reading light 102 at the user's location flashes, and the second display effect is that the vehicle reading light 102 at the user's location gradually turns off.

[0049] It should be understood that in this embodiment, the term "user" is not limited to any particular type; "user" refers to any person using the vehicle. In some embodiments, the user includes: a driver, a passenger, etc. When the user is a driver, the corresponding vehicle reading light 102 is the vehicle reading light 102 located in the driver's seat. When the user is a passenger, the corresponding vehicle reading light 102 is the vehicle reading light 102 located near the passenger's seat.

[0050] In some embodiments, the second domain controller 301 is further configured to send the second control command to the first domain controller 101 when it is determined that the user is driving while fatigued; the second control command is configured to instruct the current display effect of the vehicle reading light 102 corresponding to the user to change to a target display effect; the target display effect is different from the current display effect.

[0051] It is understood that in the vehicle reading light control system provided in this application embodiment, when the second domain controller 301 detects that the user is driving while fatigued, it adjusts the current display effect of the vehicle reading light 102 to a target display effect that is different from the current display effect. In this way, without interfering with the driver's driving operation, by adjusting the display effect of the vehicle reading light 102, the driver's concentration is improved, thereby helping to reduce the risk of accidents caused by fatigue driving, effectively improving driving safety, and thus improving the overall vehicle intelligence level.

[0052] It should be understood that, in the embodiments of this application, the specific implementation method of the second domain controller 301 determining user fatigue driving is not limited. The determination of user fatigue driving can be based on various sensor inputs, such as steering wheel operation frequency, eye tracking, facial expression recognition, breathing rate, etc.

[0053] In some embodiments, the second domain controller 301 collects eye data from the driver and determines that the driver is driving while fatigued when it determines that the driver blinks too frequently or keeps their eyes closed for too long. In other embodiments, the second domain controller 301 captures the driver's facial expressions using a camera and determines that the driver is driving while fatigued when it determines that the driver's facial muscles are relaxed, their expression is blank, their mouth is drooping, and / or their eyelids are drooping.

[0054] In this application embodiment, the current display effect and the target display are not limited. In some embodiments, the target display effect is preset. In still other embodiments, the target display effect is determined based on the current display effect. Further, in some embodiments, the target display effect includes: flashing at a faster frequency, rapidly changing the display color of the headlights, etc. It should be understood that the target display effect is significantly different from the current display effect, thereby enhancing the driver's attention through visual stimulation.

[0055] In some embodiments, the second domain controller 301 is further configured to determine the display brightness of the corresponding vehicle reading light 102 based on the vehicle's current brightness information; and send a second control command to the first domain controller 101; the second control command includes the display brightness of the corresponding vehicle reading light 102.

[0056] It is understood that in the vehicle reading light control system provided in this application embodiment, the second domain controller 301 can determine the display brightness of the corresponding vehicle reading light 102 based on the current brightness information of the vehicle, and send the display brightness to the first domain controller 101 through a second control command. In this way, automatically adjusting the brightness of the vehicle reading light 102 according to environmental perception is beneficial to enabling the vehicle reading light 102 to adapt to different lighting conditions, thereby improving the overall vehicle intelligence level and user experience.

[0057] It should be understood that, in this embodiment, the vehicle's current brightness information refers to the light intensity data inside or outside the vehicle collected by the ambient light sensor. The vehicle's current brightness information reflects the illuminance level of natural or artificial light sources inside the vehicle, typically quantified in lux. The second domain controller 301 acquires data from the ambient light sensor and, in conjunction with preset mapping rules, calculates a suitable reading light brightness value for the current environment. For example, in low-light conditions at night, the display brightness of the vehicle reading light 102 may be automatically adjusted to a higher brightness; while in high-light conditions during the day, the display brightness of the vehicle reading light 102 may be adjusted to a lower brightness, thereby ensuring that the user receives a comfortable lighting experience under different lighting conditions.

[0058] In this embodiment, the display brightness of the vehicle reading light 102 is an output parameter dynamically adjusted based on the vehicle's current brightness information, used to control the luminous intensity of the LED. Brightness adjustment is typically achieved through pulse width modulation (PWM), which controls the average current of the LED by changing the duty cycle, thereby affecting the LED's brightness. The brightness value can be a fixed level (e.g., three levels: low, medium, and high) or a continuously adjustable percentage range (e.g., 0% to 100%). Brightness adjustment via PWM can meet users' personalized needs while improving driving comfort.

[0059] In some embodiments, the vehicle infotainment system 103 is configured to convert a voice command into the first control command and send the first control command to the first domain controller 101; or, the vehicle infotainment system 103 is configured to convert information received by the vehicle display screen representing the display effect of at least one vehicle reading light 102 into the first control command and send the first control command to the first domain controller 101.

[0060] It is understood that in the vehicle reading light control system provided in this application embodiment, the vehicle unit 103 converts the user-inputted voice commands or the information received by the vehicle display screen regarding the vehicle reading light 102 into a first control command, and sends the first command to the first domain controller 101. This allows the first domain controller 101 to control the display effect of the corresponding vehicle reading light 102 according to the first control command. In this way, flexible control of the vehicle reading light 102 can be achieved, effectively reducing the user's reliance on physical buttons, thereby improving the convenience and intelligence of in-vehicle interaction.

[0061] It should be understood that the voice control commands are not limited in this embodiment. A voice command refers to a natural language command issued by the user, such as turning on the reading light or switching to warm light. Voice commands are typically collected and processed by the vehicle's infotainment system 103, which extracts the user's intent and target function and converts the voice command into a first control command. The voice recognition process can be implemented based on a cloud-based AI model or a local model, and should have high recognition accuracy and response speed. The vehicle's infotainment system 103 is used to input the collected voice information after noise reduction into the cloud-based AI model or the local model.

[0062] In some embodiments, a mapping relationship exists between voice commands and first control commands. When a user speaks a specific voice command, the vehicle infotainment system 103 converts the specific voice command into a standard control command format, such as a CAN bus message, LIN frame, Ethernet service call, etc., so that the first domain controller 101 can correctly parse and execute the corresponding operation. For example, the vehicle infotainment system 103 translates the voice command "turn on reading lights" into the PWM signal configuration value for lighting up the white LED group; and translates the voice command "switch to warm light" into a combination of control parameters that reduce the brightness of white light and increase the brightness of yellow light, etc.

[0063] It should be understood that, in this embodiment, the information received by the vehicle display screen refers to the setting operations performed by the user on the human-machine interface of the vehicle system 103, such as adjusting the brightness of the dome light, selecting the light color, and setting the gradient time. The user inputs the setting operation through the touch screen, the vehicle system 103 captures and stores the setting operation as configuration data, and then sends the configuration data to the first domain controller 101 through the CAN bus or other communication methods, so that the first domain controller 101 controls the display effect of the corresponding vehicle reading light 102 to be the display effect set by the user.

[0064] In some embodiments, the conversion logic between the information received by the in-vehicle display and the first control command is highly configurable. For example, when a user selects 80% brightness on the slider, the vehicle system 103 sends this 80% brightness information to the first domain controller 101 via the first control command. The first domain controller 101 converts the 80% brightness value into the corresponding PWM duty cycle, thereby controlling the brightness output of the corresponding in-vehicle reading light 102. When the user selects yellow light, the vehicle system 103 generates a combination of control commands to turn off white light and turn on yellow light. Furthermore, the in-vehicle reading light control system 10 also supports a multi-user account memory function. That is, after each user logs in, the in-vehicle reading light control system 10 automatically loads the user's personalized settings, improving the consistency and comfort of the user experience.

[0065] In some embodiments, the first domain controller 101 is further configured to control the display effect of the vehicle reading light 102 to a third display effect when it is determined that the vehicle door is open; and to control the display effect of the vehicle reading light 102 to a fourth display effect when it is determined that the vehicle door is closed; the third display effect is different from the fourth display effect.

[0066] It is understood that in the vehicle reading light control system provided in this application embodiment, when the first domain controller 101 determines that the vehicle door is open, it controls the display effect of the vehicle reading light 102 to the third display effect; when the first domain controller 101 determines that the vehicle door is closed, it controls the display effect of the vehicle reading light 102 to a fourth display effect different from the third display effect. This allows the vehicle reading light control system 10 to automatically adjust the display effect of the vehicle reading light 102 according to changes in the vehicle door status, enhancing the scene adaptability of the vehicle reading light control system 10 and achieving more intelligent, energy-saving, and user-friendly lighting management.

[0067] It should be understood that, in this embodiment, "door open" refers to the state of any vehicle door changing from fully closed to slightly open or fully open. The door open state is typically obtained through door switch signal detection, such as by acquiring door status information via a CAN bus or other communication methods. When the first domain controller 101 detects that a door is open, it will execute corresponding lighting control operations according to a preset strategy.

[0068] In this embodiment, the first display effect refers to the specific lighting state presented by the vehicle reading light 102 when the vehicle door is open, including parameters such as brightness, color temperature, and gradual brightening / fading time. For example, in one possible implementation, a white LED can be set to be lit at high brightness, or a yellow LED and a white LED can be lit simultaneously and their ratio adjusted to create a warm-toned lighting effect. The first display effect can be achieved by adjusting the brightness and color ratio of the LED group using a PWM signal.

[0069] It should be understood that, in this embodiment, "door closed" means that all doors of the vehicle are completely closed and there is no micro-open signal input. The first domain controller 101 continuously monitors the changes in the door status to determine whether the door closing condition is met, and triggers different lighting control logic according to the door closing condition.

[0070] In this embodiment, the second display effect is another lighting state presented by the vehicle reading light 102 when the car door is closed. The second display effect differs from the first display effect and may be characterized by lower brightness, a cooler color temperature, or complete shutdown. For example, after the car door is closed, the brightness of the vehicle reading light 102 can be reduced to a soft mode, or a delayed shutdown process can be set to save energy and reduce interference to the user.

[0071] It should be understood that, in the embodiments of this application, the difference between the first display effect and the second display effect reflects the ability of the vehicle reading light control system 10 to dynamically adjust the lighting output according to different scenarios.

[0072] For example, in one possible implementation, when the vehicle door is closed, the vehicle reading light control system 10 can gradually dim or turn off the vehicle reading light 102 according to the delay time in the configuration word to prevent discomfort caused by sudden extinguishing. When the vehicle door is fully closed, the vehicle reading light control system 10 can further optimize the light response strategy in conjunction with other sensors (such as an ambient light sensor) to improve overall comfort and energy efficiency.

[0073] In this embodiment, the display effect of the vehicle reading light 102 is controlled according to the vehicle door status. Based on this control logic, when the vehicle door is open, the vehicle reading light control system 10 can provide bright and clear illumination to facilitate users getting in and out of the vehicle or retrieving items; when the vehicle door is closed, the vehicle reading light control system 10 will switch the vehicle reading light 102 to a low-power operation mode or a completely off mode, which can improve energy efficiency and extend the service life of the vehicle reading light, ultimately achieving the goal of improving the overall vehicle intelligent lighting experience.

[0074] In some embodiments, the first domain controller 101 is a region controller; the second domain controller 102 is an intelligent driving domain controller.

[0075] It is understood that in the vehicle reading light control system provided in this application embodiment, the control logic for the vehicle reading light 102 is moved up to the area controller, and the intelligent driving domain controller can call the area controller according to the needs of the scenario to control the vehicle reading light 102. This enhances the functional integration of the entire vehicle, enables cross-domain collaborative control, and further provides technical support for expanding more software-based services and user experience scenarios.

[0076] It should be understood that, in this embodiment, the Vehicle Interface Unit (VIU) refers to an electronic control unit used to centrally process multiple functional control logics within a specific vehicle area. The VIU is typically integrated in the central location of a certain area of ​​the vehicle body, responsible for receiving input signals from sensors, switches, etc., and generating control outputs according to preset strategies to control the display effect of the vehicle reading lights 102. The VIU undertakes the control logic of the dome light system, replacing the MCU function within each vehicle reading light 102 in a traditional distributed solution.

[0077] In this embodiment, the intelligent driving domain controller is the core computing platform of the vehicle's intelligent driving domain, primarily responsible for functions such as perception data fusion, path planning, and decision control. The intelligent driving domain controller typically possesses high computing power and software-defined capabilities, enabling it to run complex autonomous driving algorithms and communicate across domains with other domain controllers. As a second domain controller 301, the intelligent driving domain controller can call the functions of the area controller through a service interface to achieve remote control of the dome lights, such as advanced functions like voice control and scene linkage.

[0078] The following describes an exemplary application of the embodiments of this application in a real-world application scenario.

[0079] As automotive electronic and electrical architecture evolves towards "centralization and software definition," there is an urgent need for a new type of lighting control system that can reduce hardware costs and improve the level of intelligent control while ensuring functional reliability.

[0080] In this application embodiment, a dual-color (yellow and white) LED vehicle reading light system (i.e., an example of a vehicle reading light control system) based on centralized control by a regional controller and without a master control MCU at the lamp end is provided, and its control method is applicable to the roof lighting control of passenger cars, new energy vehicles and other models.

[0081] In this application embodiment, a vehicle-mounted dual-color reading light system (i.e., an example of a vehicle-mounted reading light control system) and control method based on VIU centralized control are provided. Through a drive-control separation architecture, the control logic is moved up to the area controller (VIU), and only the drive circuit is retained at the lamp end, eliminating the MCU at the lamp end, thereby achieving the following technical effects: reducing the lamp BOM cost; supporting multi-lamp collaboration and unified strategy management; and improving system reliability and maintenance convenience.

[0082] This application proposes an in-vehicle dual-color reading light system (i.e., an example of an in-vehicle reading light control system), comprising: a lamp assembly unit and a zone controller. The lamp assembly units are respectively located in different positions within the vehicle (e.g., front left, front right, rear left, rear right); each lamp assembly unit includes an execution unit comprising: a yellow LED group (color temperature 2700K–3500K) and a white LED group (color temperature 5000K–6500K); a self-resetting switch in the lamp assembly unit is used to input a switching signal to the zone controller; a dual-channel constant current drive LDO in the lamp assembly unit is used to receive PWM signals from the zone controller and drive the corresponding LEDs. The lamp execution unit does not contain a main control microcontroller and only executes drive actions according to received control commands.

[0083] The area controller receives door opening / closing signals, ambient light intensity signals, and lighting assembly switching signals; the area controller also outputs a control signal, which is a low-side PWM signal that adjusts brightness via duty cycle.

[0084] In some embodiments, the control commands include: gradual brightening / fading time, door closing duration, color temperature, brightness adjustment, etc.

[0085] Figure 4 A schematic diagram of the structure of a vehicle-mounted reading light control system provided in this application embodiment. Figure 4 ,like Figure 4 As shown, the vehicle reading light control system includes: an experience computer 401 (i.e., an example of a vehicle infotainment system), an intelligent driving domain controller 402, a zone controller 403, and a lighting assembly 404; wherein, the zone controller 403 includes: GPIO ports 4031, 4032, 4033, and 4034; the lighting assembly includes a first light group 4041 (white LED light group), a second LED light group 4042 (yellow LED light group), and a self-resetting switch 4043.

[0086] Among them, GPIO port 4031 is used to collect the top light switch signal, port 4032 provides power to the first light group 4041 and the second LED light group 4042, port 4033 is used to input the PWM signal to drive the first light group 4041, and port 4034 is used to input the PWM signal to drive the second light group 4042.

[0087] This application provides a vehicle-mounted dual-color dome light control system (i.e., an example of a vehicle-mounted reading light control system), which mainly includes: a dome light switch (physical button or touch sensor); a zone controller, which serves as the physical controller for the dome light control logic; and a dual-color LED lighting assembly, including a yellow LED group and a white LED group. The lighting assembly does not have an MCU, and all control logic is executed centrally in the VIU, realizing a system architecture of "drive and control separation and software uplink".

[0088] In some embodiments, the hardware connection and driving methods of the vehicle reading light system include: hardware connection and driving methods for acquiring switch signals and hardware connection and driving methods for driving dual-color LEDs.

[0089] For switch signal acquisition: One end of the overhead light switch is connected to the GPIO input pin of the VIU, and the other end is grounded. The switch has an internal pull-up resistor connected in series, which is high level by default. When the user presses the switch, the circuit is turned on, and the VIU detects that the input pin level changes from high to low, which is considered a valid trigger. The VIU has a built-in debouncing algorithm (software filtering) to prevent false triggering.

[0090] For dual-color LED driving: The VIU is equipped with two low-side drive PWM output channels. The first channel controls the yellow LED group (color temperature approximately 3000K), and the second channel controls the white LED group (color temperature approximately 6000K). The driver chip uses a highly integrated low-side driver, supporting up to 400Hz, and has gradual brightening / fading control capabilities, as well as overcurrent and overtemperature protection functions. The LED lights are powered by an energy-saving power supply (12V) provided by the VIU, and can still operate briefly after the vehicle is powered off.

[0091] Figure 5 A diagram illustrating the on / off state of a vehicle reading light provided in this application embodiment is shown below. Figure 5 As shown, the VIU achieves cyclic switching between three states by detecting the number of times the overhead light switch is operated; the correspondence between the number of overhead light switch operations and the switch variable and light function performance is shown in Table 1: Table 1

[0092] In some embodiments, this state variable is automatically cleared to zero after the vehicle is powered off, and it defaults to the off state the next time it is powered on.

[0093] The vehicle reading light control system supports gradual brightening / fading of the lights, and its control process includes the following steps 11 to 13: Step 11, from 0x00 to 0x01 (turn on white light): The VIU software controls the white drive PWM pin to linearly increase the PWM duty cycle with a set start time, end brightness, and gradient time to achieve gradual brightening of the white light. Step 12, from 0x01 to 0x02 (switching from white light to yellow light): The VIU software controls the white drive PWM pin to linearly reduce the PWM duty cycle with a set start and end brightness and a gradual change time, so as to gradually dim the white light. At the same time, it controls the yellow drive PWM pin to linearly increase the PWM duty cycle with a set start and end brightness and a gradual change time, so as to gradually brighten the yellow light. Step 13, from 0x02 to 0x00 (turn off yellow light): The VIU software controls the yellow drive PWM pin to linearly reduce the PWM duty cycle with the set start and end brightness and fading time, so as to gradually turn off the yellow light.

[0094] The brightness parameters and fading time mentioned above can be written into the VIU's non-volatile memory (NVM) in the form of configuration words on the production line or after-sales service.

[0095] In some embodiments, the in-vehicle reading light control system supports user-defined brightness adjustment, which can be personalized by the user through the in-vehicle infotainment (IVI). The IVI's human-machine interface (HMI) provides a "dome light brightness adjustment" slider, ranging from 0% to 100%. After setting, the IVI sends a configuration command to the VIU via the CAN bus. The VIU saves the target brightness value as a configuration word in its internal flash memory or electrically erasable programmable read-only memory (EEPROM). All subsequent manual or automatic lighting actions use this set brightness. This parameter supports multi-user account memory.

[0096] In some embodiments, the vehicle reading light control system supports door linkage control (DOOR function). The VIU continuously acquires the status signals of the four doors and the tailgate via the CAN bus. When any door changes from "fully closed" to "slightly open," the VIU controls the corresponding light to gradually brighten with the set brightness and color according to the preset DOOR function configuration word. After the door closes, a 25-second delay timer (configurable via software) is started. If there are no other triggers during this period (such as reopening the door or manually pressing the button), the light gradually dims after 25 seconds. If the door is opened again during the delay period, the timer restarts.

[0097] In some embodiments, the vehicle reading light control system supports cross-domain collaboration and functional expansion (advantages of software migration). Since the lighting control logic is entirely centralized in the VIU, other domain controllers can achieve cross-domain control through service calls, significantly expanding the functional boundaries. Examples include voice-controlled lighting and scene-based lighting control.

[0098] In voice-controlled lighting scenarios, users can issue voice commands such as "turn on the reading light" or "switch to warm light." The Electronic Digital Computer (EDC) will then call the service interface and drive the lighting fixtures via the VIU to perform the corresponding operations.

[0099] For scene-based lighting control scenarios, users can select preset or custom scenes, and the VIU (Visible Utility Unit) will execute the corresponding control functions based on the preset scene. The Experience Computer (EDC) or Intelligent Driving Domain Controller (IDE) calls service interfaces to drive the lights through the VIU to perform corresponding operations. Examples include scene functions such as welcome / farewell lights on / off, fatigue reminders, and adaptive headlight adjustment, enriching the overall intelligent vehicle experience.

[0100] Based on the foregoing embodiments, this application provides a vehicle. Figure 6This application provides a schematic diagram of the structure of a vehicle, as shown in the embodiment of the present application. Figure 6 As shown, vehicle 60 includes the vehicle-mounted reading light control system 10 provided in this application embodiment.

[0101] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, and improvements made within the spirit and scope of this application are included within the scope of protection of this application.

Claims

1. A vehicle-mounted reading light control system, characterized in that, The control system includes: a first domain controller, multiple vehicle reading lights, and a vehicle infotainment system; wherein... The first domain controller is communicatively connected to the vehicle infotainment system; the first domain controller is used to receive a first control command sent by the vehicle infotainment system; The first domain controller is electrically connected to a plurality of the vehicle-mounted reading lights; the first domain controller is used to control the display effect of the corresponding vehicle-mounted reading lights based on the received first control command.

2. The control system according to claim 1, characterized in that, The vehicle-mounted reading light includes: a first LED light group, a second LED light group, and a self-resetting switch; wherein... The first terminal of the first domain controller is electrically connected to the first terminal of the self-resetting switch, the second terminal of the first domain controller is electrically connected to the first LED group, and the third terminal of the first domain controller is electrically connected to the second LED group; the second terminal of the self-resetting switch is grounded. The first domain controller is configured to, upon determining that the self-resetting switch is open, control the display effect of the first LED light group and / or the second LED light group in the corresponding vehicle reading light based on the received first control command; the first LED light group and the second LED light group display different colors.

3. The control system according to claim 1, characterized in that, The control system further includes a second domain controller, wherein... The second domain controller is communicatively connected to the vehicle infotainment system; the second domain controller is used to receive a second control command sent by the vehicle infotainment system. The second domain controller is communicatively connected to the first domain controller; the second domain controller is used to send the second control command to the first domain controller; the first domain controller and the second domain controller are different. The first domain controller is used to control the display effect of the corresponding vehicle reading light based on the received second control command.

4. The control system according to claim 3, characterized in that, The second domain controller is further configured to, upon determining that a user has entered the vehicle, send a second control command to the first domain controller, wherein the second control command is configured to instruct the display effect of the corresponding vehicle reading light to be a first display effect; or, upon determining that a user has left the vehicle, send a second control command to the first domain controller, wherein the second control command is configured to instruct the display effect of the corresponding vehicle reading light to be a second display effect; the first display effect is different from the second display effect.

5. The control system according to claim 3, characterized in that, The second domain controller is further configured to send a second control command to the first domain controller when it is determined that the user is driving while fatigued; the second control command is configured to instruct the current display effect of the vehicle reading light corresponding to the user to change to a target display effect; the target display effect is different from the current display effect.

6. The control system according to claim 3, characterized in that, The second domain controller is further configured to determine the display brightness of the corresponding vehicle reading light based on the vehicle's current brightness information; and send the second control command to the first domain controller; the second control command includes the display brightness of the corresponding vehicle reading light.

7. The control system according to any one of claims 1 to 6, characterized in that, The vehicle infotainment system is configured to convert voice commands into the first control command and send the first control command to the first domain controller; or, the vehicle infotainment system is configured to convert information received by the vehicle display screen representing the display effect of at least one of the vehicle reading lights into the first control command and send the first control command to the first domain controller.

8. The control system according to any one of claims 1 to 6, characterized in that, The first domain controller is further configured to control the display effect of the vehicle reading light to a third display effect when it is determined that the vehicle door is open; and to control the display effect of the vehicle reading light to a fourth display effect when it is determined that the vehicle door is closed; the third display effect is different from the fourth display effect.

9. The control system according to any one of claims 1 to 6, characterized in that, The first domain controller is a region controller; the second domain controller is an intelligent driving domain controller.

10. A vehicle, characterized in that, The vehicle includes the vehicle-mounted reading light control system as described in any one of claims 1 to 9.

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