Vehicle Light Control Device Wait Time Irradiation Area Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing light control devices for vehicles frequently change the irradiation area when oncoming vehicles approach and recede, causing driver annoyance due to frequent adjustments.
Innovation Solution
A light control device that includes means to acquire other vehicle information, set and maintain an irradiation area based on the position of other vehicles, and prohibits irradiation area changes until a predetermined wait time has elapsed, with adjustable wait times based on vehicle direction and speed, and mechanisms to prevent glare by positioning light optical axes strategically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the irradiation area is frequently adjusted to track oncoming vehicles, then the light control responsiveness is improved, but the driver experiences annoyance due to frequent changes
Solution Approach 1:
The patent applies periodic action by implementing a wait time mechanism that periodically delays irradiation area changes. When an oncoming vehicle is detected, the system does not immediately adjust the light but waits for a predetermined time period. If the vehicle is still present after the wait time, then the irradiation area is adjusted. This periodic delay reduces frequent adjustments while maintaining necessary responsiveness.
2Object-affected harmful factors
If the irradiation area is changed immediately when a vehicle is detected, then the glare prevention is improved, but the driver experiences annoyance due to frequent adjustments
Solution Approach 1:
The system uses periodic action with a wait time delay before changing the irradiation area. This delay allows the system to verify the persistent presence of oncoming vehicles before making adjustments, reducing unnecessary changes while ensuring glare prevention when vehicles are truly present.
Solution Approach 2:
The patent applies preliminary action by performing a verification step (wait time period) before executing the irradiation area change. This preliminary verification ensures that changes are only made when necessary, reducing frequent adjustments while maintaining effective glare prevention.
3Ease of operation
If the wait time is extended to reduce frequent changes, then the driver comfort is improved, but the responsiveness to actual hazards is reduced
Solution Approach 1:
The system implements periodic action with a predetermined wait time that balances driver comfort and responsiveness. The wait time is set to a specific duration that filters out transient detections while maintaining adequate response to genuine hazards. After the wait time expires, the system checks again and makes adjustments if vehicles are still present, ensuring both comfort and responsiveness.
Data Source
AI summary
In a light control device, positional information of another vehicle present near an own vehicle is acquired. An irradiation area is set based on the position of the other vehicle. Output for changing the irradiation area of a light in the own vehicle is performed to achieve the set irradiation area. The output for changing the irradiation area is prohibited until the elapse of a wait time that has been set in advance are included. According to the light control device, the irradiation area of the light is not changed until the elapse of the wait time. Therefore, annoyance caused by the irradiation area being frequently changed can be suppressed.