Centralized Aircraft State Distribution With Selective Avionics Subscription
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Solution Overview
Problem
Current avionics systems independently compute aircraft states, leading to complex and inflexible exchange interfaces, where changes in one system can impact others, even if they only require a subset of state information, resulting in inefficient data transmission and processing.
Innovation Solution
An electronic device for centralized computation and diffusion of aircraft states, which calculates and transmits only the required state information to connected avionics devices via an avionics network or direct link, using a publish-subscribe protocol to customize data transmission based on consumer needs, optimizing bandwidth and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a centralized architecture is used to compute all aircraft states independently of avionics systems, then computation is simplified, but the exchange interface structure becomes fixed and impacts all systems even when they only need a subset of states
Solution Approach 1:
The patent segments the aircraft states into multiple categories (flight states, engine states, system states, etc.) and allows each avionics system to selectively subscribe to only the states it needs. This segmentation enables the centralized computation to remain simple while the interface becomes flexible through selective data subscription.
Solution Approach 2:
The patent introduces dynamic subscription mechanisms where avionics systems can dynamically subscribe to, unsubscribe from, or modify their state requirements. This dynamic approach allows the interface structure to adapt to changing needs without affecting other systems, resolving the contradiction between centralized simplicity and interface flexibility.
2Loss of information
If all aircraft states are transmitted to all avionics systems, then complete information is available, but bandwidth consumption and processing time increase
Solution Approach 1:
The patent extracts and transmits only the specific aircraft states that each avionics system needs, rather than transmitting all states to all systems. This extraction approach maintains information completeness for each system while significantly reducing overall bandwidth consumption and processing requirements.
Solution Approach 2:
The patent implements local quality by allowing each avionics system to receive data with quality and detail appropriate to its specific needs. Different systems receive different subsets of states based on their functional requirements, optimizing bandwidth usage while ensuring each system gets the information it needs.
3Device complexity
If the exchange interface structure is fixed, then system architecture is simplified, but adding new aircraft states impacts all systems even those that don't need them
Solution Approach 1:
The patent makes the interface structure dynamic by allowing systems to subscribe to specific states they need. When new states are added to the centralized computation, existing systems can selectively subscribe to them without being forced to process all states. This dynamic subscription model enables rapid system evolution without impacting unrelated systems.
Solution Approach 2:
The patent segments the state data into distinct, independently subscribable units. This segmentation allows new states to be added to the system without requiring changes to the interface structure for all systems, as only the systems that need the new states will subscribe to them.
Data Source
AI summary
The invention relates to an electronic device for the centralized computation and diffusion of the state(s) of an aircraft, configured for at least calculate the value of one or more aircraft state(s), generate a list of aircraft state(s) the value of which is accessible via the electronic device, the list comprising, for each state, information representative of the said state, diffuse the list to each consumer avionics device, of at least one value of at least one state, receive, from at least one consumer avionics device, at least one request for transmission of one or more values of at least one first state selected from the list, the request comprising the said representative information related to the said at least one first selected state, and transmit, to at least one consumer avionics device, only the value or values of the at least one selected state.