Vehicle Headlamp Obstacle Blinking Control
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Solution Overview
Problem
Existing head lamp systems fail to effectively enhance driver visibility of obstacles during nighttime driving by simply turning on or off optical modules, leading to degraded awareness and underutilization of the spotlight unit.
Innovation Solution
A head lamp system that includes a headlight and a spotlight unit with multiple optical modules, where the blink period of the optical module corresponding to the obstacle's position is adjusted based on the vehicle's speed, increasing visibility by varying the blink period and number of blinks in proportion to the speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the optical module simply turns on or off to indicate obstacle presence, then the system structure remains simple, but driver awareness and visibility of the obstacle are degraded
Solution Approach 1:
The patent applies periodic action by making the optical module blink at different periods depending on vehicle speed. At low speeds, the blink period is longer (e.g., 0.5-2 seconds), while at high speeds, the blink period is shorter (e.g., 0.1-0.5 seconds). This periodic blinking action significantly improves driver awareness and obstacle visibility compared to simple on/off states, while maintaining relatively simple system structure.
2Device complexity
If the blink period is kept constant regardless of vehicle speed, then the control system remains simple, but driver visibility is degraded at different speed conditions
Solution Approach 1:
The patent applies dynamics by making the blink period variable according to vehicle speed. The control unit adjusts the blink period dynamically: longer periods at low speeds and shorter periods at high speeds. This dynamic adjustment optimizes driver visibility for different driving conditions while adding only minimal control system complexity through speed-based conditional logic.
3Reliability
If the optical module blinks at high frequency to improve visibility, then driver awareness is enhanced, but the system may cause dazzling to the driver
Solution Approach 1:
The patent applies parameter changes by adjusting the blink period parameter based on vehicle speed. At high speeds, the blink period is shortened to 0.1-0.5 seconds, providing frequent visual cues for driver awareness. At low speeds, the blink period is extended to 0.5-2 seconds, reducing the blinking frequency to prevent dazzling. This parameter adjustment optimizes both driver awareness and comfort across different operating conditions.
Data Source
AI summary
A head lamp system may include a head lamp that may be provided with a headlight and a spotlight unit including a plurality of optical modules having different irradiation regions in front of a vehicle, wherein an optical module of the plurality of optical modules, which has a irradiation region that corresponds to a position of an obstacle in front of the vehicle, blinks, and a blink period of the optical module may be changed according to a vehicle speed.