Standardized Optical Network Architecture for Aircraft Cabin Data Management
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Solution Overview
Problem
Current data management systems in passenger transport cabins, such as aircraft, face challenges with the proliferation of electronic devices leading to increased wiring complexity and electromagnetic interference, limiting the number of devices that can be used simultaneously and requiring significant maintenance during cabin refits.
Innovation Solution
A standardized optical-network architecture for data distribution that converts non-optical data into optical signals, allocates wavelengths based on device priorities, and uses multiplexing to transmit data through an optical distribution network, reducing wiring needs and enabling efficient reconfiguration of cabin systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If local direct links between devices and data systems are used, then data transmission is achieved, but wiring complexity and weight increase significantly
Solution Approach 1:
The patent merges multiple individual data transmission links into a single optical fiber network. Instead of having separate cables for each device connection, all devices share common optical fiber infrastructure, dramatically reducing wiring complexity while maintaining full data transmission capability to each device.
Solution Approach 2:
The patent replaces traditional electrical wiring systems with optical fiber communication. This substitution eliminates the need for heavy metallic cables and complex electrical connections, using light-based transmission through optical fibers instead, thereby reducing wiring weight and complexity while improving EMI resistance.
2Adaptability or versatility
If more electronic devices are added to passenger cabins, then connectivity and entertainment options improve, but electromagnetic interference increases
Solution Approach 1:
The patent replaces electrical signal transmission with optical signal transmission. By converting electrical signals to optical signals for data transmission over optical fibers, the system eliminates electromagnetic interference entirely, as optical signals are immune to EMI. This allows unlimited device connectivity without introducing additional electromagnetic interference.
3Reliability
If traditional wiring systems are used in composite aircraft structures, then electrical connections are established, but lightning protection and EMI shielding require heavy metallic devices
Solution Approach 1:
The patent replaces heavy metallic electrical wiring with lightweight optical fiber cables. Optical fibers are inherently immune to lightning and EMI, eliminating the need for heavy metallic shielding and bonding structures required in traditional electrical systems. This substitution dramatically reduces weight while maintaining reliable data transmission and inherent protection against electromagnetic hazards.
4Adaptability or versatility
If cabin refits are performed with non-standardized architectures, then specific requirements are met, but maintenance time and immobilization cycles increase
Solution Approach 1:
The patent implements a universal optical network architecture that serves multiple cabin configurations and device types through a single standardized infrastructure. The optical network and its interfaces are designed to accommodate different cabin layouts, device categories, and service levels without requiring custom wiring for each configuration, thereby reducing maintenance time during refits.
Solution Approach 2:
The patent segments the data network into standardized functional modules (optical network core, interface units, device categories) that can be independently configured and replaced. This modular segmentation allows cabin refits to be performed by reconfiguring software and swapping modular interface units rather than rewiring entire systems, significantly reducing maintenance time and immobilization cycles.
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 solution provides lightweight, high-performance, and interference-insensitive data communication, reducing maintenance time during refits and enhancing security, while accommodating various system categories and service levels.
Implementation Method 1
a standardized architecture for distributing data streams between data resources of a "systems" part comprising an audiovisual transmission system, systems for outward communication from the cabin and/or cabin systems, and a part for "utilization" of these data consisting of recipient cabin devices via a conversion of data into optical signals
Data Source
AI summary
A data management structure (1a) on board a transportation device, incorporating a cabin (100) provided with seats (110), includes a data resource block (210) incorporating audiovisual transmission system units (211 to 213), outward communication systems (100) and/or cabin systems, a standardised data distribution architecture (10a), and devices (E1 to E4) for operating said systems. In the structure (1a), the standardised architecture (10a) includes a concentration box (11) for the bidirectional transfer, on the one hand, of base signals with the resource block (210) and, on the other hand, optical signals with the devices (E1 to E4) of the cabin (100) on at least one optical fibre (2, 3; 2a, 2′a; 2b). This concentration box (11) houses units for processing (211 to 213) by signal switching, bidirectional conversion into optical signals, and optical signal management by wavelength allocation and distribution of downstream (F1) and upstream (F2) optical flows. This concentration box (11) is connected to the devices (E1 to E4) of said systems via intermediate boxes (30, 40) also housing processing units (111 to 113) according to the devices (E1 to E4) to which they are connected.