In-flight Crew Rest Monitoring with Alert Inhibition
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Solution Overview
Problem
Current systems for in-flight controlled rest for flight crews do not effectively manage sleep inertia and fatigue, leading to inefficient recovery periods and potential safety risks due to the lack of comprehensive monitoring and alert inhibition during rest periods.
Innovation Solution
A system comprising pilot and co-pilot user interfaces and a flight crew monitoring system that determines physiological states, generates alerts, and inhibits them upon user input, allowing for data storage on alert inhibition times to enhance rest quality and fatigue management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flight crew monitoring system continuously generates alerts for fatigue detection, then safety monitoring is improved, but it disturbs the resting flight crew member during controlled rest
Solution Approach 1:
The system allows the resting flight crew member to pre-indicate their rest status through the user interface before the alert generation begins. This preliminary action enables the system to know in advance when to suppress alerts, preventing disturbance while maintaining monitoring capability for the on-duty crew member
Solution Approach 2:
The system provides feedback mechanisms where the resting crew member can indicate their rest status, and the system responds by adjusting alert generation accordingly. This feedback loop ensures that safety monitoring continues while respecting the rest period of the designated resting crew member
2Measurement precision
If the system monitors physiological state of both crew members continuously, then fatigue detection accuracy is improved, but system complexity increases
Solution Approach 1:
The system extracts and focuses monitoring on specific physiological parameters most relevant to fatigue detection (such as heart rate, respiratory rate, and movement patterns) rather than attempting to monitor all possible physiological states. This selective extraction maintains detection accuracy while reducing system complexity
Solution Approach 2:
The monitoring system is designed to serve multiple functions: it monitors both crew members, distinguishes between on-duty and resting states, detects fatigue, and adjusts alert generation accordingly. This multi-functionality consolidates what could be multiple separate systems into one unified solution
3Reliability
If alerts are generated for the resting crew member, then fatigue safety is maintained, but the rest period is disrupted and recovery is reduced
Solution Approach 1:
The resting crew member pre-indicates their rest status through the user interface, allowing the system to proactively suppress alerts before they can disrupt the rest period. This ensures uninterrupted recovery time while maintaining safety monitoring for the on-duty crew member
Solution Approach 2:
The system dynamically adjusts its alert generation behavior based on the operational state of the crew members. When one crew member is identified as resting, the system dynamically suppresses alerts for that individual while continuing monitoring, thereby adapting safety monitoring to the current operational context
Data Source
AI summary
In one embodiment, a system to enhance in-flight controlled rest for a flight crew includes a pilot user interface, a co-pilot user interface, and a flight crew monitoring system. The flight crew monitoring system is configured to: (i) determine a physiological state of both a pilot and a co-pilot, (ii) selectively generate one or more alerts for the pilot and/or the co-pilot based on the determined physiological state, (iii) inhibit generating the one or more alerts for the pilot upon receipt of a first inhibit signal from the pilot user interface, (iv) inhibit generating the one or more alerts for the co-pilot upon receipt of a second inhibit signal from the co-pilot user interface, and (v) generate and store data indicating a time of day and a duration that the one or more alerts for the pilot or co-pilot, respectively, were inhibited.