Motorcycle Headlight Timing Advance for Bank Angle Glare Control
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Solution Overview
Problem
Existing vehicle lighting systems struggle to promptly adjust their irradiation range when the vehicle body banks during turns, leading to potential glare for oncoming traffic while compromising the rider's view of the road surface.
Innovation Solution
A vehicle lighting system that includes a detecting section to monitor the change in vehicle posture and a control section to adjust the lamp irradiation region based on the detected change, advancing the timing of adjustments with increasing bank angle to prevent glare and ensure adequate road visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the lamp irradiation region is changed based on vehicle posture to maintain road visibility during turns, then the rider's view of the road surface is improved, but glare may occur for oncoming traffic
Solution Approach 1:
The control section advances the timing at which the lamp irradiation region starts to be changed based on the change amount of bank angle per unit time. By predicting future vehicle posture and adjusting lighting in advance, the system ensures continuous road visibility while preventing glare to oncoming traffic that would occur with delayed adjustment.
Solution Approach 2:
The lamp irradiation region is dynamically adjusted based on real-time detection of vehicle posture changes. The control section modifies lighting timing and direction according to the detected bank angle and its rate of change, enabling adaptive lighting that responds to actual vehicle dynamics during turns.
2Loss of time
If the timing at which the lamp irradiation region starts to be changed is advanced to prevent time lag, then road visibility is maintained during rapid banking, but glare may occur for oncoming traffic
Solution Approach 1:
The system calculates the change amount of bank angle per unit time and uses this information to advance the timing of irradiation region adjustment by an appropriate period. This predictive approach eliminates time lag during rapid banking while controlling the advancement amount to prevent premature lighting that would cause glare to oncoming traffic.
Solution Approach 2:
The control section adjusts the timing advancement based on the detected change amount of bank angle per unit time. When rapid banking is detected, the timing is advanced more significantly; when banking is gradual, the advancement is minimized, thereby preventing glare while maintaining responsiveness.
3Area of stationary object
If the lamp irradiation region is adjusted to irradiate inward region during turns, then the rider can see distant front regions, but the timing adjustment may cause glare for other vehicles and pedestrians
Solution Approach 1:
The control section advances the timing at which the lamp irradiation region starts to be changed, allowing the lighting system to prepare for upcoming posture changes. This ensures that when the vehicle banks, the irradiation region is already positioned to cover the needed inward area without causing glare from premature adjustment.
Solution Approach 2:
The system dynamically changes the lamp irradiation region parameters based on detected vehicle posture and its rate of change. The control section adjusts both the timing and the extent of irradiation region modification, expanding coverage to inward regions when needed while controlling the timing to prevent glare to other road users.
Data Source
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AI summary
A vehicle which turns in a state in which a vehicle body is banked from an upright state to a first side in a vehicle width direction of the vehicle body, comprises a lamp which is attached to the vehicle body, and irradiates a lamp irradiation region set in front of the vehicle body; a detecting section which detects a change over time of a posture of the vehicle body while the vehicle is traveling; and a control section which controls the lamp in such a manner that the lamp irradiation region is changed based on the change over time of the posture of the vehicle body which is detected by the detecting section.