A control method for adjusting brightness of an automobile exterior lamp based on an environmental signal
This control method, which adjusts the brightness of automotive exterior lights based on environmental signals, achieves adaptive brightness adjustment in both static and dynamic scenarios. It solves the problem of insufficient environmental adaptability in existing technologies and improves display effects and driving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHEJIANG TOSPO AUTOMOTIVE LIGHTING CO LTD
- Filing Date
- 2026-04-20
- Publication Date
- 2026-06-09
AI Technical Summary
Existing vehicle body display-type exterior lighting and the whole vehicle lack adaptive and manual adjustment functions, resulting in insufficient environmental adaptability and an inability to adapt to different lighting scenarios.
A control method for adjusting the brightness of automotive exterior lights based on environmental signals is provided, including static and dynamic adaptive brightness adjustment modes. The method automatically adjusts the brightness by using an ambient light detection sensor and a preset algorithm, and combines the priorities of safety, comfort and entertainment to achieve adaptive brightness adjustment.
In static scenes, manual brightness adjustment adapts to different ambient light conditions; in dynamic scenes, adaptive adjustment ensures driving safety and improves display quality and environmental adaptability.
Smart Images
Figure CN122179964A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of automotive exterior lighting brightness adjustment technology, specifically relating to a control method for adjusting the brightness of automotive exterior lighting based on environmental signals. Background Technology
[0002] With the further development of vehicle body display exterior lighting and the further relaxation of regulations, it is no longer limited to static welcoming and decorative displays, but is gradually transforming into human-vehicle interaction and vehicle-to-vehicle connectivity, and can display content in both static and driving states.
[0003] The brightness of exterior lighting fixtures for vehicle displays needs to be adjusted both adaptively and manually to suit different ambient light conditions.
[0004] However, existing vehicle body display-type exterior lighting and the entire vehicle do not have similar adaptive and manual adjustments, resulting in insufficient environmental adaptability. Summary of the Invention
[0005] The purpose of this invention is to provide a control method for adjusting the brightness of automotive exterior lights based on environmental signals, thereby solving the problems mentioned in the background art. The control method for adjusting the brightness of automotive exterior lights based on environmental signals provided by this invention has the characteristic of being able to manually or adaptively adjust the brightness of the automotive exterior lights according to environmental signals.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a control method for adjusting the brightness of automotive exterior lights based on environmental signals, comprising the following steps:
[0007] S1. In static scene display mode, manually adjust the brightness of the exterior lighting fixtures through the control terminal, or select static adaptive lighting brightness mode.
[0008] S2. When the set action is triggered, exit the static scene display mode and enter the dynamic scene display mode. In the dynamic scene display mode, it automatically enters the dynamic adaptive brightness adjustment mode, and the brightness of the exterior lights cannot be manually adjusted.
[0009] S3, Dynamic Adaptive Brightness Adjustment Mode, adjusts the brightness of the exterior lights adaptively based on the ambient light sensor signals of the exterior lights themselves or the whole vehicle, according to a preset calibration algorithm.
[0010] S4. In dynamic adaptive brightness adjustment mode, the brightness conversion rate and switching delay of the exterior lights are comprehensively calibrated based on the priority of safety > comfort > entertainment, as well as the vehicle signal input.
[0011] In this invention, the brightness adjustment range of the exterior lighting fixture is 0-20000 nits, wherein the brightness adjustment range during the day is 3000 nits-20000 nits, the brightness adjustment range at night is 0-1000 nits, and the brightness adjustment range in dim mode is 1000 nits-3000 nits.
[0012] In this invention, the control terminal is a mobile APP, the vehicle's central control screen, or a vehicle remote control.
[0013] Furthermore, in this invention, both the static adaptive light brightness mode and the dynamic adaptive brightness adjustment mode can be turned off with a single click via the control terminal.
[0014] In this invention, in step S2, the set action includes a vehicle speed ≥ 10 km / h or continuous driving for more than 100 meters.
[0015] In this invention, in S4, the safety adaptive adjustment logic is as follows: based on the vehicle's intelligent signal input, the detection and identification of surrounding vehicles and pedestrians, the corresponding reminder function, and based on the vehicle's steering and lane change signals (navigation signal, steering wheel angle, turn signal, etc.), the corresponding brightness adjustment display is executed without delay at the maximum change rate.
[0016] In this invention, in S4, the comfort adaptive adjustment logic is: switching between light and dark scenes, and performing delay calibration according to the functionally defined scene.
[0017] In this invention, further, in S4, the entertainment adaptive adjustment logic is as follows: for brightness adjustment involving welcoming and dynamic entertainment scenes, based on the detection of the ambient light detection sensor, it is determined whether to adjust the brightness according to the daytime mode, nighttime mode, or dim mode, and according to the calibrated range.
[0018] Compared with the prior art, the beneficial effects of the present invention are:
[0019] 1. In the static scene display mode, the brightness of the exterior lights can be manually adjusted via the control terminal, or the static adaptive lighting brightness mode can be selected for adaptive brightness adjustment, thereby adapting to the display needs under different external ambient light conditions and better expressing the display effect.
[0020] 2. In the dynamic adaptive brightness adjustment mode, the present invention adjusts the brightness according to the priority of safety > comfort > entertainment, so as to better express the display effect while ensuring driving safety. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the control logic link of the present invention.
[0022] Figure 2 This is a schematic diagram of the controller for the LED driver chip of the present invention, which uses a high-side switch.
[0023] Figure 3 This is a schematic diagram of the controller for the LED driver chip of the present invention, which uses a low-side switch.
[0024] Figure 4 This is a schematic diagram of the brightness adjustment rate of the present invention.
[0025] Figure 5 This is a schematic diagram of the delay adjustment of the present invention. Detailed Implementation
[0026] 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.
[0027] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0029] In the description of this invention, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used merely for distinction in description and have no special meaning.
[0030] Example 1
[0031] Please see Figures 1-5 This embodiment provides the following technical solution: a control method for adjusting the brightness of automotive exterior lights based on environmental signals, comprising the following steps:
[0032] S1. In static scene display mode, manually adjust the brightness of the exterior lighting fixtures through the control terminal, or select static adaptive lighting brightness mode.
[0033] S2. When the set action is triggered, exit the static scene display mode and enter the dynamic scene display mode. In the dynamic scene display mode, it automatically enters the dynamic adaptive brightness adjustment mode, and the brightness of the exterior lights cannot be manually adjusted.
[0034] S3, Dynamic Adaptive Brightness Adjustment Mode, adjusts the brightness of the exterior lights adaptively based on the ambient light sensor signals of the exterior lights themselves or the whole vehicle, according to a preset calibration algorithm.
[0035] S4. In dynamic adaptive brightness adjustment mode, the brightness switching rate and switching delay of the exterior lights are comprehensively calibrated based on a priority order of safety > comfort > entertainment, as well as the vehicle signal input. The controller has a flexible function to write the change rate and switching time (calibrable from 0 to 200ms) parameter adjustment, such as... Figure 4 As shown, the brightness switching, from dark to 100% brightness (corresponding to the time period 0-t1), and from 100% brightness to dark (corresponding to the time period t2-t3), can be calibrated and set between 0-2 seconds. The brightness can also be calibrated and set between 0-100%. Figure 5 As shown, the time interval t4 between receiving a control command and the corresponding execution command of the lamp can be arbitrarily set between 0 and 200ms.
[0036] In adaptive brightness adjustment mode, external environmental signals include vehicle function setting signals, sunlight and rain sensor signals, wiper speed signals, vehicle speed signals, vehicle energy mode signals, vehicle turn signal signals, welcome function signals, door unlock signals, map navigation signals, ambient light detection signals, steering wheel angle signals, and intelligent driving detection signals.
[0037] By adopting the above technical solution, in static scene display mode, the brightness of the exterior lights can be manually adjusted via the control terminal, or an adaptive brightness adjustment can be performed by selecting a static adaptive lighting brightness mode, thereby adapting to the display needs under different ambient light conditions and better expressing the display effect. In dynamic adaptive brightness adjustment mode, the present invention performs adaptive brightness adjustment based on the priority of safety > comfort > entertainment, better expressing the display effect while ensuring driving safety.
[0038] Specifically, the brightness adjustment range of the exterior lighting fixtures is 0-20000 nits, with the daytime brightness adjustment range being 3000 nits-20000 nits, the nighttime brightness adjustment range being 0-1000 nits, and the dim mode brightness adjustment range being 1000 nits-3000 nits.
[0039] By adopting the above technical solutions, clearer visibility is ensured during the day, and glare is prevented for pedestrians and other drivers at night.
[0040] Specifically, the control terminal can be a mobile app, the vehicle's central control screen, or the vehicle's remote control.
[0041] Specifically, both the static adaptive lighting brightness mode and the dynamic adaptive brightness adjustment mode can be turned off with a single click via the control panel.
[0042] Specifically, in S2, the set actions include a vehicle speed of ≥10km / h or continuous driving for more than 100 meters.
[0043] Example 2
[0044] The difference between this embodiment and embodiment 1 is that, specifically, in S4, the safety adaptive adjustment logic is as follows: based on the vehicle's intelligent signal input, the detection and identification of surrounding vehicles and pedestrians, the corresponding reminder function, and based on the vehicle's steering and lane change signals (navigation signals, steering wheel angle, turn signal signals), the corresponding brightness adjustment display is executed without delay, according to the maximum change rate.
[0045] Specifically, in S4, the adaptive comfort adjustment logic is as follows: when switching between light and dark scenes, a delay calibration is performed based on the functionally defined scene. For example, the brightness is adjusted when entering the underground parking garage and when exiting. The brightness adjustment is based on the wiper signal and the sunlight and rain sensor to determine the weather changes. The controller provides a delay between 0-200ms (adjustable) and a range of adjustment parameters for rate changes, in order to better adapt to and meet the different comfort setting needs of different customers.
[0046] Specifically, in S4, the entertainment adaptive adjustment logic is as follows: for brightness adjustment involving welcoming guests and dynamic entertainment scenes, based on the detection of the ambient light detection sensor, it is determined whether daytime mode (high brightness), nighttime mode (low brightness), or dim mode (range adjustment) is needed. The brightness is adjusted according to the calibrated range (0-100%, calibrable) to achieve the requirement of efficient expression that is clear to see without dazzling.
[0047] In summary, in static scene display mode, the brightness of the exterior lights can be manually adjusted via the control terminal, or an adaptive brightness adjustment mode can be selected to adapt to the display needs under different ambient light conditions, thus better expressing the display effect. In dynamic adaptive brightness adjustment mode, the present invention performs adaptive brightness adjustment based on the priority of safety > comfort > entertainment, ensuring driving safety while better expressing the display effect.
[0048] 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 control method for adjusting the brightness of automotive exterior lights based on environmental signals, characterized in that: Includes the following steps: S1. In static scene display mode, manually adjust the brightness of the exterior lighting fixtures through the control terminal, or select static adaptive lighting brightness mode. S2. When the set action is triggered, exit the static scene display mode and enter the dynamic scene display mode. In the dynamic scene display mode, it automatically enters the dynamic adaptive brightness adjustment mode, and the brightness of the exterior lights cannot be manually adjusted. S3, Dynamic Adaptive Brightness Adjustment Mode, adjusts the brightness of the exterior lights adaptively based on the ambient light sensor signals of the exterior lights themselves or the whole vehicle, according to a preset calibration algorithm. S4. In dynamic adaptive brightness adjustment mode, the brightness conversion rate and switching delay of the exterior lights are comprehensively calibrated based on the priority of safety > comfort > entertainment, as well as the vehicle signal input.
2. The control method for adjusting the brightness of automotive exterior lights based on environmental signals according to claim 1, characterized in that: The brightness adjustment range of the exterior lighting fixtures is 0-20000 nits, of which the daytime brightness adjustment range is 3000 nits-20000 nits, the nighttime brightness adjustment range is 0-1000 nits, and the dim mode brightness adjustment range is 1000 nits-3000 nits.
3. The control method for adjusting the brightness of automotive exterior lights based on environmental signals according to claim 1, characterized in that: The control terminal can be a mobile app, the vehicle's central control screen, or a vehicle remote control.
4. The control method for adjusting the brightness of automotive exterior lights based on environmental signals according to claim 1, characterized in that: Both the static adaptive lighting brightness mode and the dynamic adaptive brightness adjustment mode can be turned off with a single click via the control terminal.
5. The control method for adjusting the brightness of automotive exterior lights based on environmental signals according to claim 1, characterized in that: In S2, the set action includes a vehicle speed ≥ 10 km / h or continuous driving for more than 100 meters.
6. The control method for adjusting the brightness of automotive exterior lights based on environmental signals according to claim 1, characterized in that: In S4, the safety adaptive adjustment logic is as follows: based on the vehicle's intelligent signal input, the detection and identification of surrounding vehicles and pedestrians, the corresponding reminder function, and based on the vehicle's steering and lane change signals (navigation signals, steering wheel angle, turn signal signals), the corresponding brightness adjustment display is executed without delay at the maximum change rate.
7. The control method for adjusting the brightness of automotive exterior lights based on environmental signals according to claim 1, characterized in that: In S4, the adaptive comfort adjustment logic is as follows: when switching between light and dark scenes, a delay calibration is performed based on the functionally defined scene.
8. The control method for adjusting the brightness of automotive exterior lights based on environmental signals according to claim 1, characterized in that: In S4, the entertainment adaptive adjustment logic is as follows: for brightness adjustment involving welcoming and dynamic entertainment scenes, based on the detection of the ambient light detection sensor, it is determined whether daytime mode, nighttime mode, or dim mode are required, and the brightness is adjusted according to the calibrated range.