Automated Driving Indicator Lamp Adaptive Control
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Solution Overview
Problem
Automated driving enabled vehicles face limitations in safety due to their reliance on external cooperation, with automated driving indicator lamps increasing power consumption and causing discomfort with continuous bright illumination, especially in daylight environments.
Innovation Solution
The vehicle is equipped with a travel controller and lamp controller that switches the automated driving indicator lamp on and off based on travel control states and environmental conditions, using a rare bright color like turquoise blue for increased visibility but reducing power consumption by turning off the lamp when not necessary, such as on dedicated automated driving lanes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the automated driving indicator lamp is continuously illuminated to enhance visibility and safety, then the safety and perceptibility are improved, but the power consumption increases and causes discomfort especially in daylight environments
Solution Approach 1:
The lamp controller dynamically adjusts the lighting state of the automated driving indicator lamp based on real-time travel control states and environmental conditions. The system switches between illuminated and non-illuminated states adaptively, rather than maintaining continuous illumination, thereby reducing power consumption while ensuring safety when needed.
Solution Approach 2:
The system changes the lighting parameter (on/off state) of the automated driving indicator lamp based on varying environmental conditions and travel states. By adjusting this binary parameter dynamically, the system achieves optimal balance between safety requirements and power consumption, particularly reducing unnecessary illumination in daylight conditions.
2Loss of information
If the automated driving indicator lamp is continuously illuminated to indicate automated driving state, then the information transmission to external observers is improved, but the user comfort deteriorates due to continuous bright illumination
Solution Approach 1:
Instead of continuous illumination, the system employs periodic or conditional illumination of the automated driving indicator lamp. The lamp is activated only during specific travel control states or environmental conditions that warrant external information transmission, thereby eliminating unnecessary continuous bright illumination that causes user discomfort while maintaining effective communication of automated driving status when required.
3Illumination intensity
If the lamp uses a rare bright color like turquoise blue for increased visibility, then the perceptibility from outside is improved, but the power consumption increases
Solution Approach 1:
The system dynamically controls the illumination state of the bright-colored automated driving indicator lamp, activating it only when enhanced visibility is genuinely needed based on environmental conditions and travel states. This dynamic on/off control allows the use of high-intensity bright colors like turquoise blue without the continuous power consumption penalty, achieving high visibility during critical moments while conserving energy during periods when external indication is less critical.
Data Source
AI summary
An automated driving enabled vehicle includes a travel controller, an automated driving indicator lamp, and a lamp controller. The travel controller controls travel of the vehicle while switching a travel control state between automated driving and manual driving. The automated driving indicator lamp is switched on perceptibly from outside the vehicle on the occasion of the automated driving. The lamp controller makes a control to switch on the automated driving indicator lamp to indicate that the travel control state is the automated driving, during execution of the automated driving in which the travel controller controls the travel of the vehicle by the automated driving. The lamp controller changes, during the execution of the automated driving, a lighting state of the automated driving indicator lamp in response to a change in the travel control state or a change in travel environment, or both.