Aircraft Seat Belt Thermal Sensor Locking Verification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing seat belt systems fail to ensure that passengers have properly worn the seat belt, as manual checks cannot distinguish between a locked seat belt and one that is actually worn around the torso, leading to potential safety risks.
Innovation Solution
Incorporating a thermal sensor into the seat belt assembly that senses temperature differences between the seat belt sides, ensuring the belt is properly worn by detecting human body heat, in conjunction with a magnetic-based or switch-based locking mechanism to confirm the locking state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual safety check by crew members is used, then the seat belt compliance can be monitored, but the ability to accurately determine whether the seat belt is actually worn around the torso is insufficient
Solution Approach 1:
The patent replaces manual visual inspection with automated thermal sensing technology. Thermal sensors detect temperature differences between the seat belt receiving end and ambient areas to determine if a passenger's body is present and properly positioned, substituting human judgment with objective thermal field measurement.
Solution Approach 2:
The patent introduces thermal sensors as an intermediary detection device between the passenger and the monitoring system. These sensors act as mediators that convert thermal information into detectable signals, enabling indirect but accurate measurement of seat belt wearing status without direct contact or complex imaging systems.
2Measurement precision
If RFID chips are used to detect locking mechanism state, then the locking status can be determined, but the actual wearing status around the torso cannot be confirmed
Solution Approach 1:
The patent makes the seat belt assembly multi-functional by integrating both locking mechanism detection and thermal sensing capabilities into a single system. The seat belt receiving end serves dual purposes: mechanical locking and thermal detection, eliminating the need for separate RFID chips and reducing overall component quantity.
Solution Approach 2:
The patent combines the locking mechanism and thermal sensing functions into the same structural component (the seat belt receiving end). This merging of functions reduces the number of separate components needed while providing comprehensive monitoring of both locking status and actual wearing status.
3Reliability
If thermal sensor is added to detect body temperature, then the accuracy of determining actual seat belt wearing can be improved, but the device complexity increases
Solution Approach 1:
The patent applies thermal sensing only at the critical location where the seat belt contacts the passenger's body (the receiving end), rather than using full-body thermal imaging or multiple sensors throughout the aircraft. This localized approach provides sufficient reliability for compliance verification while minimizing system complexity.
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 provides real-time compliance monitoring, ensuring passengers have securely fastened and worn their seat belts, enhancing safety and reducing manual inspection time, thereby improving operational efficiency and safety norms.
Implementation Method 1
the thermal sensor is configured to sense at least one of: a seat belt receiving end first side temperature and a seat belt receiving end second side temperature
Data Source
AI summary
Seat belts, seat belt assemblies, seat belt systems, and methods for incorporating the seat belts, seat belt assemblies, and seat belt assembly systems are disclosed, with the seat belt including a seat belt locking mechanism sensor that, in tandem with a seat belt thermal sensor provides confirmatory information as to a definitive locking condition or locking state of a seat belt.