Vehicle Lamp Luminance Control via Event Priority Scheduling
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Solution Overview
Problem
Existing vehicle lamp systems prioritize switching time over driver comfort when multiple events occur simultaneously, leading to potential glare and discomfort during high-beam transitions.
Innovation Solution
A vehicle lamp system that includes a lamp unit, a control unit, and a storage unit to manage luminance changes based on event priorities, allowing gradual adjustments to reach new luminance levels in designated periods, prioritizing higher-priority events and maintaining current periods for lower-priority events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the light-distribution pattern is switched with priority given to the later-occurring event to simplify control, then the control complexity is reduced, but the driver comfort deteriorates due to potential glare and discomfort during transitions
Solution Approach 1:
The system performs preliminary actions by detecting multiple events and determining their priorities before executing luminance changes. The control unit identifies the timing and priority of each event, then executes luminance adjustments in the optimal sequence, ensuring driver comfort is maintained while simplifying the overall control logic through pre-planned event handling.
Solution Approach 2:
The system dynamically adjusts the luminance change timing based on event priorities. When a high-priority event is detected during an ongoing luminance transition, the system dynamically modifies the transition schedule to accommodate the higher-priority event, ensuring that glare is minimized while maintaining responsive control adaptability.
2Object-affected harmful factors
If the luminance is gradually changed to reach the target level in the designated period, then the driver comfort is improved, but the response time to lower-priority events may be delayed
Solution Approach 1:
The control unit determines the priority of events before executing luminance changes, allowing it to pre-plan the timing and sequence of transitions. This preliminary prioritization ensures that high-priority events receive immediate attention while lower-priority events are scheduled appropriately, optimizing both driver comfort and response time without conflict.
Solution Approach 2:
The system changes the timing parameters of luminance transitions based on event priorities. When a high-priority event occurs, the system adjusts the transition period to complete the change more quickly or to pause the current transition, dynamically modifying the time parameter to balance comfort and responsiveness based on the specific event context.
3Productivity
If multiple luminance changes are executed simultaneously without priority management, then all events are responded to promptly, but the control complexity and potential for glare increase
Solution Approach 1:
The system executes preliminary prioritization of multiple events by determining their relative importance before initiating any luminance changes. This pre-planning allows the control unit to sequence transitions logically, ensuring that high-priority events are handled first while lower-priority events are scheduled to follow, maintaining both efficiency and simplicity in control.
Solution Approach 2:
The control unit segments the luminance change process into distinct phases based on event priorities. Instead of handling all events simultaneously, it divides the control process into sequential steps, where each phase addresses a specific priority level, thereby reducing control complexity while maintaining comprehensive event response.
Data Source
AI summary
A vehicle lamp system includes a lamp unit, a control unit that controls a change in luminance of LEDs of the lamp unit, and a storage unit that stores information indicating a priority of an event. In a case in which a second event occurs while the luminance of the LEDs is being gradually changed to reach first luminance in a first period, the control unit gradually changes the luminance of the LEDs to reach second luminance in a second period if the priority of the second event is higher than the priority of the first event, and gradually changes the luminance of the LEDs to reach the second luminance irrespective of the second period if the priority of the second event is lower than the priority of the first event.