Aircraft Cabin Lighting Management via Distributed Sensor Network
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Solution Overview
Problem
The existing ambient light sensors in aircraft cabins, typically mounted at the back of passenger seats, fail to accurately measure cabin lighting due to their location, leading to inaccurate adjustments in In-Flight Entertainment (IFE) monitor brightness levels, which negatively impacts the passenger experience.
Innovation Solution
A network of ambient light sensors is strategically placed throughout the aircraft cabin, including different physical zones, to provide more accurate light measurements. These sensors are integrated with the aircraft's IFE system, allowing for real-time adjustments in lighting levels based on the measured ambient light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a single ambient light sensor is mounted at the back of passenger seats, then the IFE system can automatically adjust brightness, but the measurement accuracy deteriorates due to the sensor's mounting position
Solution Approach 1:
The patent divides the single sensor measurement task into multiple sensors distributed throughout the cabin. Instead of relying on one sensor at the seat back, multiple sensors are placed in different physical zones (overhead bins, bulkheads, seat backs) to collectively capture the overall cabin lighting conditions, resolving the measurement accuracy issue while maintaining automatic adjustment capability
Solution Approach 2:
The patent transitions from a single-point measurement (one sensor at seat back) to a distributed spatial measurement network. By adding the spatial dimension of multiple measurement points throughout the cabin, the system achieves more representative lighting data that reflects overall cabin conditions rather than localized conditions at one position
2Measurement precision
If multiple ambient light sensors are distributed throughout the aircraft cabin, then measurement accuracy improves, but device complexity increases
Solution Approach 1:
The patent makes the lighting management system universal by having multiple sensors serve the same function (measuring ambient light) but in different locations. Each sensor performs the same measurement task, and their data is aggregated to provide comprehensive cabin lighting information, simplifying the overall system architecture despite the increased number of components
Solution Approach 2:
The patent combines data from multiple distributed sensors into a unified lighting management decision. By merging the measurements from sensors located in overhead bins, bulkheads, and seat backs, the system creates a consolidated view of cabin lighting conditions that drives single coordinated brightness adjustments across the IFE system
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 solution provides more accurate and consistent lighting levels throughout the aircraft cabin, enhancing the passenger experience by ensuring optimal brightness settings for entertainment systems, while also potentially extending the lifespan of OLED display screens.
Implementation Method 1
The monitors typically include an ambient light sensor with photodetection circuitry to detect aircraft cabin lighting by measuring the amount of ambient light present around the light sensor
Data Source
AI summary
Methods and systems are provided for a transportation vehicle. One method includes determining ambient light baseline for the flight by measuring a first light intensity by a plurality of light sensors located within a plurality of physical zones of an aircraft cabin, before a flight and transforming the measured first light intensity based on sensor locations within each physical zone of the aircraft cabin; adjusting brightness level of seat display device at passenger seats located in the aircraft cabin based on the ambient light baseline; continuing to measure in-flight light intensity by the plurality of sensors; and automatically adjusting the brightness level of one or more seat display devices in response to the in-flight light intensity varying from the ambient light baseline by a first threshold value.