Headlight Brightness Control Using Area Sensors to Reduce Glare
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Solution Overview
Problem
Existing vehicle lighting systems in designated areas, such as parking lots, can dazzle individuals due to unnecessary light reductions when a person is not present, leading to inefficient glare management.
Innovation Solution
An automatic travel management device that includes a communication device and recognition sensors to detect individuals within the illumination range of vehicle headlights and adjust light levels accordingly, reducing glare while minimizing unnecessary light reductions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the illuminance of headlights is reduced when the automated driving vehicle reaches the pick-up area, then glare to persons in the designated area is reduced, but unnecessary light reduction occurs when no person is present
Solution Approach 1:
The system uses recognition sensors to detect whether a person is present in the pick-up area and provides feedback to the control device. Based on this feedback, the control device dynamically adjusts the headlight illuminance - reducing it only when a person is detected, and maintaining normal levels when no person is present, thereby eliminating unnecessary light reduction while still preventing glare when needed.
Solution Approach 2:
The system changes the illuminance parameter of the headlights based on the detected presence of persons. When a person is detected in the pick-up area, the illuminance is reduced to a lower level; when no person is present, the illuminance is maintained at the normal higher level, allowing dynamic adaptation to actual conditions.
2Illumination intensity
If the headlight illuminance is maintained at high levels in the designated area, then visibility for the vehicle is improved, but glare is caused to persons present in the area
Solution Approach 1:
The system applies different illuminance levels to different situations in the same designated area. When a person is detected in the pick-up area, the illuminance is locally reduced in that specific area while maintaining higher illuminance elsewhere, allowing the vehicle to adapt its lighting to the local presence of persons rather than uniformly reducing light across the entire designated area.
3Object-affected harmful factors
If recognition sensors are installed in the designated area to detect persons, then glare can be reduced when persons are present, but device complexity increases
Solution Approach 1:
The recognition sensor acts as an intermediary between the vehicle's lighting system and the persons in the designated area. It detects person presence and transmits this information to the control device, which then adjusts the headlight illuminance accordingly. This intermediary approach enables automatic glare reduction without requiring direct complex interaction between the vehicle system and persons.
Data Source
AI summary
An automatic travel management device is configured to manage automatic travel of a vehicle in a designated area. The automatic travel management device includes a communication device and one or more processors. The communication device is configured to communicate with each of the vehicle and a recognition sensor. The recognition sensor is installed in the designated area and configured to recognize a situation in the designated area. The one or more processors are configured to: when the vehicle is automatically traveling while a headlight of the vehicle is turned on, detect a first person present in an illumination range of the headlight based on person recognition information from the recognition sensor; and, in response to detection of the first person, execute a light amount reduction process of transmitting, to the vehicle, an instruction to reduce light amount of the headlight.