Aircraft State Distribution via Publish-Subscribe Avionics Interfaces
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Solution Overview
Problem
Current avionic systems face complexity and interdependence issues in calculating and transmitting aircraft states, as the fixed structure of exchange interfaces affects flexibility and data transmission efficiency, particularly when not all systems require the same set of aircraft states.
Innovation Solution
An electronic device for centralized calculation and dissemination of aircraft states, which independently calculates the required states and transmits only the necessary data to consumer avionic devices using a publish-subscribe protocol, allowing for customizable transmission based on consumer requests and configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a centralized architecture is used to calculate all aircraft states, then calculation efficiency is improved, but the fixed exchange interface structure creates interdependence between systems
Solution Approach 1:
The patent segments the exchange interface into two independent parts: a fixed calculation interface for state computation and a flexible transmission interface for data distribution. This allows the calculation tool to maintain a stable, predefined interface while enabling consumer avionics systems to selectively receive only the states they need, thus resolving the interdependence problem while preserving calculation efficiency.
Solution Approach 2:
The patent extracts the transmission flexibility from the calculation interface by introducing a separate, configurable transmission layer. This extraction allows the calculation tool to operate with a fixed, efficient interface while the transmission mechanism adapts to individual consumer needs, eliminating the coupling between calculation and distribution.
2Loss of information
If all aircraft states are transmitted to all consumer avionics systems, then complete information availability is achieved, but bandwidth consumption increases
Solution Approach 1:
The patent applies local quality by allowing each consumer avionics system to receive a customized subset of aircraft states tailored to its specific functional needs. Instead of uniform distribution, each system gets precisely the information it requires, optimizing bandwidth usage while ensuring each system has complete information for its operation.
Solution Approach 2:
The patent implements partial action by enabling consumer systems to receive only the necessary portion of aircraft states rather than all available states. This selective reception reduces transmitted data volume and bandwidth consumption while maintaining sufficient information for each system's functional requirements.
3Stability of the object's composition
If the exchange interface structure is fixed, then system stability is maintained, but adding new aircraft states requires changing the interface structure
Solution Approach 1:
The patent introduces an intermediary layer between the fixed calculation interface and the flexible transmission interface. This intermediary (the configurable transmission mechanism) absorbs the complexity of adaptation, allowing new aircraft states to be added without modifying the stable calculation interface structure, thus maintaining stability while enabling evolution.
Data Source
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AI summary
The invention relates to an electronic device (10) for centralized calculation and dissemination of aircraft state(s), configured to at least: - calculate the value of one or more aircraft state(s), - generate a list of aircraft state(s) whose value is accessible via the electronic device (10), the list including, for each state(s), information representative of said state, - disseminate the list to each avionics device, consuming (C1, C2, C3, C4) at least one value of at least one state, - receive, from at least one avionics device consuming (C1, C2, C3, C4), at least one request to transmit one or more values of at least one first state selected from the list, the request including said representative information associated with said at least one first selected state, - transmit, to at least one avionics device consuming (C1, C2, C3, C4), only the value or values of said at least one selected state.