A domain control based vehicle multi-lamp cooperative display system and method

Abstract

The application relates to the technical field of automobile intelligent lighting, and discloses a vehicle multi-lamp cooperative display system based on domain control, which comprises a central display domain controller, a plurality of heterogeneous display devices and a vehicle information source; the central display domain controller is in communication connection with the plurality of heterogeneous display devices and the vehicle information source respectively. The vehicle multi-lamp cooperative display system and method based on domain control, by means of the central display domain controller, establishes a global display resource model, virtually integrates all the heterogeneous lamp groups into a unified logical display plane, generates a cross-lamp-group dynamic light effect sequence based on a scene instruction, and performs pixel-level accurate distribution and synchronous driving, so that the problems of information islands, internal and external visual information fragmentation and simple static light effect display caused by the independent operation of lamp groups in the prior art are solved, and then the coherent, integral and dynamic light interaction expression of the inside and outside of the vehicle is realized, and the ability of human-vehicle interaction and external communication is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of automotive intelligent lighting technology, specifically to a multi-lamp collaborative display system and method for vehicles based on domain control. Background Technology

[0002] Existing vehicle lighting systems generally adopt a distributed independent control architecture. Various lighting groups, such as headlights, taillights, and interior lights, are equipped with independent electronic control units. The controllers transmit commands point-to-point through the CAN bus. The lighting groups only perform basic lighting, signal indication, and fixed light effect display according to the preset program, and each lighting group operates independently according to its own control logic.

[0003] However, the existing distributed independent control architecture makes it difficult for the various light groups to coordinate and exchange information, making it impossible to achieve cross-light group collaborative planning and pixel-level data allocation. At the same time, the lack of a high-precision time synchronization mechanism makes it difficult for multiple light groups to achieve frame synchronous refresh, resulting in fragmented information transmission inside and outside the vehicle and insufficient dynamic interaction capabilities. Summary of the Invention

[0004] (a) Technical problems to be solved: To address the shortcomings of existing technologies, this invention provides a vehicle multi-lamp collaborative display system and method based on domain control, which solves the problems of information fragmentation, weak interaction, difficulty in synchronization, and complex upgrades caused by the existing distributed independent control of vehicle lights mentioned in the background.

[0005] (II) Technical Solution: To achieve the above objectives, the present invention provides the following technical solution: a vehicle multi-lamp cooperative display system based on domain control, comprising: Central display domain controller, several heterogeneous display devices, and vehicle information source; The central display domain controller is communicatively connected to several heterogeneous display devices and the vehicle information source, respectively. The central display domain controller is configured to establish and maintain a global display resource model, abstract and virtualize several heterogeneous display devices into a logically unified and discontinuous display plane, generate a cross-display device collaborative display strategy based on the signal input from the vehicle information source, and finally parse the collaborative display strategy into pixel-level display data and distribute it to the corresponding heterogeneous display devices for execution according to a unified timing sequence, thereby realizing synchronous collaborative display of multiple lights across the entire vehicle.

[0006] Preferably, the central display domain controller and the heterogeneous display devices communicate and synchronize using a high-precision time synchronization mechanism.

[0007] Preferably, the heterogeneous display device includes a headlight assembly, a taillight assembly, and an interior lighting assembly.

[0008] Preferably, the headlight assembly includes an ISD interactive light, a DLP projection headlight, and a holographic signal light; The taillight assembly includes ISD taillights and holographic taillights; The interior lighting includes ambient lighting and interior ISD display lights.

[0009] Preferably, the vehicle information source includes a navigation system, an ADAS system, an infotainment system, a V2X unit, and a body controller.

[0010] A domain-controlled vehicle multi-light cooperative display method includes: The central display domain controller acquires signals from the vehicle information source and generates corresponding cross-lamp group collaborative display strategies based on the acquired signals and the global display resource model. The central display domain controller parses the corresponding cross-lamp group collaborative display strategy into pixel-level display data and sends it to the front lamp group, the taillight group, and the interior lamp group in a unified timing sequence to achieve synchronous collaborative display.

[0011] Preferably, the central display domain controller generates a dynamic optical flow sequence for navigation guidance inside the vehicle and a welcoming interactive graphic sequence for the exterior of the vehicle, which are then distributed to the headlight assembly, the taillight assembly, and the interior lighting assembly.

[0012] Preferably, the central display domain controller generates a safety warning animation sequence and makes the safety warning animation sequence appear as a display effect that diffuses outward and focuses from the center on the headlights, taillights, and interior lights.

[0013] Preferably, the central display domain controller receives instructions from the lead vehicle in the formation via the V2X unit and controls the taillight assembly of its vehicle to display synchronously with the taillight display units of the other vehicles in the formation.

[0014] (III) Beneficial Effects: The multi-lamp cooperative display system and method for vehicles based on domain control provided by this invention have the following beneficial effects: 1. This is a vehicle multi-lamp collaborative display system and method based on domain control. It establishes a global display resource model through a central display domain controller, virtually integrates the heterogeneous lamp groups of the whole vehicle into a unified logical display plane, and generates dynamic light effect sequences across lamp groups based on scene instructions, and performs pixel-level precise allocation and synchronous driving. This solves the problems of information silos, fragmented internal and external visual information, and only simple static light effects caused by the independent operation of each lamp group in the existing technology. In this way, it realizes a coherent, holistic, and dynamic light interaction expression inside and outside the vehicle, and greatly improves the ability of human-vehicle interaction and external communication.

[0015] 2. This vehicle multi-lamp collaborative display system and method based on domain control uniformly schedules the vehicle's lighting display resources through a central display domain controller. It can call up the pixels and display capabilities of idle lamp groups as needed. At the same time, it replaces multiple independent controllers with a single domain controller, thereby simplifying the number of vehicle wiring harnesses and parts, reducing system complexity and hardware costs. When adding collaborative display functions, it only needs to be uniformly configured and upgraded at the domain controller. It solves the defects of existing technologies such as non-reusable resources, redundant systems, high costs, and difficulty in function upgrades, and improves the overall reliability, scalability, and economy of the system. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structural technical architecture of the present invention; Figure 2 This is a schematic diagram of the overall architecture of the structural system of the present invention. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1 refer to Figure 1 and Figure 2 A preferred embodiment of the present invention, a vehicle multi-lamp cooperative display system based on domain control, will be described in detail below: The system includes a central display domain controller, several heterogeneous display devices, and a vehicle information source. Among these: The central display domain controller is used to achieve unified scheduling and collaborative management of display resources across the entire domain; Heterogeneous display devices include different types and locations of vehicle light display equipment; The vehicle information source is used to input vehicle status, driving intentions, and external interaction signals.

[0019] The central display domain controller is communicatively connected to several heterogeneous display devices and vehicle information sources, so that the central display domain controller can collect signals, data and instructions transmitted by the vehicle information sources, enabling the central display domain controller to acquire information in real time and control the lamp groups included in each heterogeneous display device.

[0020] The central display domain controller is configured to establish and maintain a global display resource model (including the physical location, spatial orientation, pixel arrangement, resolution, color capability, and display type of each light group), abstract and virtualize several heterogeneous display devices into a logically unified and discontinuous display plane (to virtually splice together the scattered light groups throughout the vehicle into a unified display area), generate a cross-display device collaborative display strategy based on the signals input from the vehicle information source, and finally parse the collaborative display strategy into pixel-level display data (precisely mapping each frame of data to the corresponding pixel of the light group to achieve continuous dynamic lighting effects), and distribute it to the corresponding heterogeneous display devices for execution according to a unified timing sequence to achieve synchronous collaborative display of multiple lights throughout the vehicle.

[0021] The central display domain controller and several heterogeneous display devices communicate and synchronize using a high-precision time synchronization mechanism. This can be achieved using the gPTP protocol (or time-triggered Ethernet, independent hardware synchronization signal lines, and software synchronization methods based on global clock stamps). Data frames carry synchronization timestamps, enabling microsecond-level time synchronization. This ensures that all light groups (headlights, taillights, and interior lights) refresh the screen at the same time, avoiding visual tearing and stuttering caused by communication delays and refresh asynchrony, and guaranteeing consistent dynamic effects.

[0022] The heterogeneous display device includes headlights, taillights, and interior lights, located at the front, rear, and interior of the vehicle, respectively, covering the entire vehicle.

[0023] The headlight assembly includes ISD interactive lights, DLP projection headlights, and holographic signal lights, among which: ISD interactive lights are installed on the roof inside the vehicle to display patterns, text, and dynamic light effects; DLP projection headlights are installed inside the front headlight assembly of a vehicle to create a high-precision projection area on the road in front of the vehicle. They have both conventional low and high beam lighting and road information projection functions, and can project guidance signs, warning information and other content directly onto the road surface. Holographic traffic lights are typically installed on the exterior rearview mirrors and sides of vehicles to project three-dimensional markings and dynamic guidance information onto the ground around the vehicle, providing clear and intuitive traffic prompts and interactive signals for pedestrians and vehicles in the vicinity.

[0024] The taillight assembly includes ISD taillights and holographic taillights, among which: The ISD taillights are installed inside the taillight assembly at the rear of the vehicle and are used to display high-definition dynamic patterns, text and signal light effects. They can output continuous dynamic animations and status prompts according to the driving scenario. Holographic taillights are installed on both sides of the rear of the vehicle in combination light areas. They are used to project holographic markings and dynamic warning information to the road behind and to the sides of the vehicle, enhancing information interaction between vehicles and driving safety.

[0025] The interior lighting includes ambient lighting and interior ISD indicator lights, among which: Interior ambient lighting is installed on the vehicle's interior door panels, dashboard, and center console to provide ambient lighting and directional guidance lighting effects. It can switch colors and dynamic light flows according to the scene to provide in-vehicle prompts and a suitable driving and riding environment for the driver and passengers. Interior ISD display lights are installed in areas such as the vehicle's dashboard and inside the doors to visualize dynamic patterns, text, and interactive information, enhancing human-vehicle interaction.

[0026] Vehicle information sources include navigation systems, ADAS systems, infotainment systems, V2X units, and body controllers, among which: The navigation system is installed in the central control area inside the vehicle's cabin to obtain real-time driving routes, steering instructions, and location information; The ADAS system is installed on the windshield, around the vehicle body and chassis area. It collects road conditions and risk information through sensors such as cameras and radar to identify potential dangers such as pedestrians and obstacles. It also controls the headlights, taillights and interior lights to output warning animations and flashing light effects in a synchronized manner through the central display domain controller. The infotainment system is installed in the center console and instrument panel area inside the vehicle cabin to respond to the interactive needs of the driving scenario, providing human-vehicle interaction signals such as welcome and scene mode switching, and supports personalization; The V2X unit is installed on the roof or in a concealed area inside the vehicle to enable wireless communication between vehicles and between vehicles and roadside facilities. It receives external interactive commands such as platooning and road conditions to ensure information transmission between multiple vehicles. The Body Control Controller (BCM) is installed in the body control module area inside the vehicle cabin. It is used to collect vehicle status information such as doors, lights, and vehicle speed, and output basic body signals to provide its own status data for full-domain collaborative display.

[0027] The following is the complete working process and working principle of the above embodiments: After the system powers on, the central display domain controller first establishes and maintains a global display resource model, uniformly recording the position, parameters, and display capabilities of heterogeneous display devices such as headlights, taillights, and interior lights, and virtually integrating them into a global logical display plane to provide a data foundation for subsequent coordination among the various light groups. During system operation, the central display domain controller collects signals in real time from the navigation system, ADAS system, infotainment system, V2X unit, and body controller, fusing and judging the current vehicle scenario to generate corresponding collaborative display strategies. Subsequently, the central display domain controller parses the strategies into pixel-level display data, allocates it to the corresponding light groups according to a unified timing sequence, and ensures that each light group refreshes its image at the same time through the vehicle Ethernet and gPTP protocol, avoiding display delays, tearing, and asynchrony. Finally, the headlights, taillights, and interior lights coordinate under unified scheduling to achieve collaborative display of multiple light groups throughout the vehicle.

[0028] Example 2 refer to Figure 1 and Figure 2 A method for multi-light coordinated display of vehicles based on domain control, comprising: The central display domain controller acquires signals from vehicle information sources, parses the corresponding interaction intents of the signals, and generates corresponding cross-lamp group collaborative display strategies based on the acquired signals and the global display resource model. The central display domain controller parses the corresponding cross-lamp group collaborative display strategy into pixel-level display data and sends it to the headlights, taillights, and interior lights in a unified timing sequence to achieve synchronous collaborative display and create a coherent and integrated visual effect. For example: When the vehicle navigation system determines that a right turn is required, the central display controller activates the dynamic light flow collaborative display mode, controlling the interior lights to display a blue dynamic light flow that flows from the left door panel along the dashboard to the right to form directional guidance (both color and guide shape can be customized). Simultaneously, it controls the holographic turn signal light on the right rearview mirror to project a turn arrow, and also controls the right-side ISD taillights at the rear to cycle through the turn signal text (RIGHT TURN) and arrow animation, thus providing synchronized navigation guidance both inside and outside the vehicle.

[0029] The central display domain controller generates a dynamic optical flow sequence for navigation guidance inside the vehicle (providing steering guidance for the driver) and a welcoming interactive graphic sequence for external use (for passenger recognition and interaction in autonomous driving scenarios), which are then distributed to the headlights, taillights, and interior lights. For example, the welcoming interactive graphic sequence can be set as follows: When the autonomous vehicle arrives at the pick-up point, the central display domain controller activates the welcome interaction mode, controlling the ISD interactive lights on the roof to display welcome text and passenger identification, and controlling the ISD interactive lights on the front grille to display greeting or welcome patterns (such as the word "Hello" or a smiley face). At the same time, it controls the holographic signal lights on both sides to project a light circle and directional arrows onto the ground, which, together with the interior ambient lighting on the inside of the doors, flashes with a breathing light effect to conduct a friendly welcome interaction between people and the vehicle.

[0030] The central display domain controller generates a sequence of safety warning animations, specifically coordinated with the color changes and flashing of the interior lights (interior lighting assemblies) to provide warning reminders. This sequence of safety warning animations presents a display effect that expands outwards from the center and focuses on a specific warning icon displayed on a particular display device within the headlight assembly (e.g., an ISD interactive light). For example: When the ADAS system detects a pedestrian crossing risk but the braking threshold has not been reached, the central display domain controller generates a red warning wave animation. The animation spreads outward from the center of the logic display plane and focuses on the pedestrian icon on the ISD interactive light. Simultaneously, the interior ambient lighting turns red and flashes rapidly, improving the driver's recognition efficiency.

[0031] The central display domain controller receives commands from the lead vehicle in the convoy via the V2X unit, controlling its taillights to synchronize with the taillight display units of the other vehicles in the convoy. This creates a visually unified, continuous light strip across the convoy, clearly indicating the convoy status to following vehicles, preventing other vehicles from cutting in, and thus improving the safety of convoy driving. In short: When multiple vehicles are traveling in a convoy, the central display domain controller of each vehicle receives unified instructions from the lead vehicle through the V2X network and controls the rear ISD display to synchronously display a continuous horizontal light strip, so that the taillights of multiple vehicles visually merge into a virtual long vehicle, clearly indicating the convoy status to the following vehicles, preventing weaving and improving the safety of convoy driving.

[0032] The following is the complete working process and working principle of the above embodiments: During operation, the central display domain controller continuously acquires vehicle information source signals, analyzes driving intentions, risk states, and interaction needs, and generates cross-light group collaborative display strategies based on the full-domain display resource model. These strategies are then broken down into pixel-level data and synchronously distributed to each light group. For example, in a navigation scenario, the central display domain controller drives the interior ambient lighting, holographic signal lights, and ISD taillights to coordinate their movements, achieving synchronized steering guidance both inside and outside the vehicle. In a welcome scenario, it links the ISD interactive lights, holographic signal lights, and interior ambient lighting to complete passenger identification and boarding guidance. In a warning scenario, it generates and focuses on display a warning animation, enhanced by high-frequency flashing of interior lights. In a platooning scenario, it synchronously controls the ISD taillights of multiple vehicles via V2X commands, forming a continuous visual light strip to indicate the platooning status. In short, this method, through unified scheduling and high-precision synchronization, enables all light groups within the vehicle and vehicle groups to collaboratively output coherent visual information, improving vehicle interactivity and driving safety.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vehicle multi-lamp collaborative display system based on domain control, characterized in that, include: Central display domain controller, several heterogeneous display devices, and vehicle information source; The central display domain controller is communicatively connected to several heterogeneous display devices and the vehicle information source, respectively. The central display domain controller is configured to establish and maintain a global display resource model, abstract and virtualize several heterogeneous display devices into a logically unified and discontinuous display plane, generate a cross-display device collaborative display strategy based on the signal input from the vehicle information source, and finally parse the collaborative display strategy into pixel-level display data and distribute it to the corresponding heterogeneous display devices for execution according to a unified timing sequence, thereby realizing synchronous collaborative display of multiple lights across the entire vehicle.

2. The vehicle multi-lamp collaborative display system based on domain control according to claim 1, characterized in that, The central display domain controller and several heterogeneous display devices communicate and synchronize using a high-precision time synchronization mechanism.

3. The vehicle multi-lamp collaborative display system based on domain control according to claim 1, characterized in that, The heterogeneous display device includes a headlight assembly, a taillight assembly, and an interior lighting assembly.

4. A vehicle multi-lamp collaborative display system based on domain control according to claim 3, characterized in that: The headlight assembly includes ISD interactive lights, DLP projection headlights, and holographic signal lights; The taillight assembly includes ISD taillights and holographic taillights; The interior lighting includes ambient lighting and interior ISD display lights.

5. A vehicle multi-lamp collaborative display system based on domain control according to claim 1, characterized in that, The vehicle information sources include navigation systems, ADAS systems, infotainment systems, V2X units, and body controllers.

6. A method for multi-lamp collaborative display of vehicles based on domain control, employing the multi-lamp collaborative display system for vehicles based on domain control as described in claims 1-5, characterized in that, include: The central display domain controller acquires signals from the vehicle information source and generates corresponding cross-lamp group collaborative display strategies based on the acquired signals and the global display resource model. The central display domain controller parses the corresponding cross-lamp group collaborative display strategy into pixel-level display data and sends it to the front lamp group, the taillight group, and the interior lamp group in a unified timing sequence to achieve synchronous collaborative display.

7. A method for multi-light coordinated display of vehicles based on domain control according to claim 6, characterized in that, The central display domain controller generates a dynamic optical flow sequence for navigation guidance inside the vehicle and a welcoming interactive graphic sequence for the exterior of the vehicle, which are then distributed to the headlight assembly, the taillight assembly, and the interior lighting assembly.

8. A method for multi-light coordinated display of vehicles based on domain control according to claim 6, characterized in that, The central display domain controller generates a safety warning animation sequence and makes the safety warning animation sequence appear as a display effect that diffuses outward and focuses on the headlights, taillights, and interior lights.

9. A method for multi-lamp collaborative display of vehicles based on domain control according to claim 6, characterized in that, The central display domain controller receives instructions from the lead vehicle in the formation via the V2X unit, and controls the taillight assembly of this vehicle to display synchronously with the taillight display units of the other vehicles in the formation.

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