Adaptive Emergency Exit Lighting for Vehicle Rollover
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Solution Overview
Problem
Existing exit illumination systems for vehicles, particularly in military contexts, fail to provide adequate and adaptive lighting during extreme movements or immobilization conditions, such as rollovers, water immersion, or explosions, which can disorient occupants and hinder safe evacuation.
Innovation Solution
A distributed lighting system with sensors for detecting extreme movements and environmental conditions, using high-intensity LEDs and a standalone power source, which automatically activates to illuminate emergency exits asymmetrically, ensuring orientation and safety in emergency scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional exit illumination systems are used, then normal exit identification is provided, but protection and assistance are not offered during extreme movements or immobilization conditions
Solution Approach 1:
The lighting system transitions from a static conventional illumination system to a dynamic adaptive system that automatically adjusts its operation based on detected vehicle conditions. Sensors monitor for extreme movements, water immersion, and immobilization events, triggering appropriate lighting responses to maintain reliability across varying operational states.
Solution Approach 2:
The system changes operational parameters (lighting intensity, activation state) in response to detected environmental conditions. When extreme conditions are sensed, the system activates emergency lighting modes with different intensity levels compared to normal operation, adapting to the changed operational context.
2Ease of operation
If asymmetric lighting is used to provide orientation during extreme conditions, then occupant guidance is improved, but system complexity increases
Solution Approach 1:
The system employs asymmetric lighting patterns where different exit locations receive different illumination intensities based on the vehicle's orientation and extreme condition state. This asymmetry provides critical directional information to occupants, helping them orient themselves toward the correct exit despite vehicle displacement or rollover.
Solution Approach 2:
The system incorporates sensors that detect vehicle orientation, water immersion, and extreme movements, providing feedback to the control unit. This feedback loop enables the system to automatically adjust lighting patterns without complex manual intervention, using sensor data to determine appropriate asymmetric illumination strategies.
3Reliability
If high-intensity LEDs with standalone power source are used, then illumination reliability in extreme conditions is improved, but device complexity and cost increase
Solution Approach 1:
The system incorporates a standalone power source and sensor array that are pre-installed and ready for immediate activation. In the event of extreme conditions, the lighting system can activate without relying on the vehicle's primary electrical system, which may be compromised. This preliminary preparation ensures illumination reliability when it is most needed.
Solution Approach 2:
The emergency lighting system operates autonomously using its own dedicated power source and control unit. Once triggered by sensor detection of extreme conditions, the system self-activates without requiring external power or complex integration with the vehicle's main electrical system, simplifying the overall power architecture while ensuring reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively guides occupants to safe exits even in extreme conditions, such as rollovers, water immersion, or explosions, by providing reliable and adaptive illumination, enhancing evacuation safety and resilience in military and utility vehicles.
Implementation Method 1
The lighting system comprises a standalone power source and control unit and an array of LEDs which are mounted to or around the frame of the exit
Data Source
AI summary
A lighting system for an emergency exit from an occupied space: an array of lighting elements located around the emergency exit to illuminate the exit and facilitate egress for an occupant of the space; a control unit; and sensors to detect one or more trigger conditions and actuate the lighting elements in response to a first trigger condition from any of the sensors, the sensors comprising: an impulse detector operable to send a signal to the control unit indicating that the impulse detector has experienced an impulse; and a roll and/or pitch detector operable to send a signal to the control unit indicating that the roll and/or pitch detector has experienced roll and/or pitch, wherein upon detection of the first trigger condition the control unit actuates one or more of the lighting elements to illuminate the exit.