Aircraft Seat Localization via Wireless Signal Strength
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Solution Overview
Problem
Aircraft seat localization without in-flight entertainment (IFE) systems poses challenges due to the absence of pre-existing data wiring, leading to increased weight, space requirements, and limited reconfigurability, as traditional methods rely on physical wiring for localization.
Innovation Solution
A wireless localization method using wireless data concentrators and smart seat controllers, where the wireless data concentrator is electrically isolated from the power system, allowing for signal-based distance determination and seat location assignment within defined zones based on signal strength and known circuit breaker locations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional data wiring is used for seat localization, then localization accuracy is improved, but aircraft weight increases
Solution Approach 1:
The patent replaces the mechanical wiring system with a wireless electromagnetic signal-based localization system. Instead of using physical data cables to determine seat locations, the system uses wireless signals transmitted between access points and seat devices to calculate positions through signal strength measurement and time of flight calculations, thereby eliminating the need for heavy data wiring while maintaining localization capability
Solution Approach 2:
The wireless access points in the aircraft serve multiple functions: they provide both wireless network connectivity and localization services simultaneously. The same wireless infrastructure used for communication is also used to determine seat positions, eliminating the need for separate dedicated localization wiring and reducing overall system weight
2Measurement precision
If data wiring is installed for each seat, then localization capability is improved, but aircraft space requirements increase
Solution Approach 1:
The patent replaces the mechanical wiring system with a wireless electromagnetic signal-based localization system. Instead of using physical data cables to determine seat locations, the system uses wireless signals transmitted between access points and seat devices to calculate positions through signal strength measurement and time of flight calculations, thereby eliminating the need for heavy data wiring while maintaining localization capability
Solution Approach 2:
The wireless access points in the aircraft serve multiple functions: they provide both wireless network connectivity and localization services simultaneously. The same wireless infrastructure used for communication is also used to determine seat positions, eliminating the need for separate dedicated localization wiring and reducing overall system weight
3Measurement precision
If pre-existing IFE systems are used, then localization infrastructure is improved, but reconfigurability is limited
Solution Approach 1:
The patent implements a dynamic wireless localization system where access points and seat devices can be freely added, removed, or repositioned without requiring physical rewiring. The system automatically adapts to configuration changes by recalculating positions based on current wireless signal characteristics, enabling flexible aircraft interior reconfiguration while maintaining accurate localization
Solution Approach 2:
The wireless access points in the aircraft serve multiple functions: they provide both wireless network connectivity and localization services simultaneously. The same wireless infrastructure used for communication is also used to determine seat positions, eliminating the need for separate dedicated localization wiring and reducing overall system weight
4Use of energy by moving object
If wireless systems are electrically coupled to power systems, then power supply is improved, but electrical isolation requirements worsen
Solution Approach 1:
The patent introduces an intermediary power transfer mechanism using electromagnetic coupling between primary and secondary windings. This intermediary system allows power to be transmitted from the aircraft's power system to wireless devices without direct electrical connection, thereby maintaining electrical isolation and reliability while ensuring adequate power supply to the wireless components
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
This approach eliminates the need for physical data wiring, reducing weight and space requirements while enabling dynamic reconfiguration and accurate seat mapping without the need for pre-existing IFE systems.
Implementation Method 1
A signal from the wireless system is received at the wireless data concentrator. The distance of the wireless system from the wireless data concentrator is determined based on the signal
Data Source
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AI summary
A method of localizing an object is provided. The method comprises deactivating a wireless system in a defined zone and then activating a wireless data concentrator located in the defined zone, wherein the wireless data concentrator is electrically isolated from the wireless system. The wireless system is activated, wherein the wireless system is electrically coupled to a circuit breaker with a known location in the defined zone. A signal from the wireless system is received at the wireless data concentrator. The distance of the wireless system from the wireless data concentrator is determined based on the signal, and a location is assigned to the wireless system within the defined zone based on the distance of the wireless system from the wireless data concentrator and the known location of the circuit breaker in the defined zone.