Aircraft Electrical Distribution System Integration
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Solution Overview
Problem
The existing electrical distribution systems for aircraft require separate communication and computation cards, which increase weight, cost, and logistical complexities due to the need for dedicated hardware and software design, leading to doubled development and production costs, as well as increased complexity in system modifications.
Innovation Solution
Integrating communication and computation functions into protection cards with microcontrollers, allowing them to manage power units and communicate with the aircraft bus, thereby eliminating the need for separate communication and computation cards, and reducing the number of microprocessors required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate communication and computation cards are used, then system reliability and availability are improved, but device complexity and cost increase
Solution Approach 1:
The patent combines the communication and computation functions previously housed in separate EDMU cards into the protection cards (SSPC). Each protection card now contains microcontrollers that perform both protection functions and communication/computation tasks, eliminating the need for dedicated separate cards and reducing overall system complexity while maintaining functional redundancy for reliability.
Solution Approach 2:
The protection cards are designed with multi-functional capability, serving both as protection devices and as communication/computation units. The microcontrollers within the protection cards handle multiple tasks including protection logic, communication with the aircraft bus, and computation of power unit commands, making the system more compact without sacrificing reliability.
2Ease of manufacture
If separate communication and computation cards are used, then functional separation is improved, but weight and cost increase
Solution Approach 1:
The patent merges the previously separate communication/computation cards into the protection cards, consolidating hardware components. This integration reduces the total number of discrete cards in the system, thereby reducing overall weight while maintaining functional separation through software-based role assignment within the integrated architecture.
3Ease of manufacture
If separate communication and computation cards are used, then dedicated hardware design is improved, but development and production costs double
Solution Approach 1:
The protection cards are designed as universal units that can perform both protection functions and communication/computation tasks. This eliminates the need to design, develop, and manufacture separate dedicated communication and computation cards, thereby reducing development costs, production complexity, and time while maintaining the ability to perform specialized functions through software configuration.
4Device complexity
If the number of microprocessors is reduced, then cost and weight are reduced, but system complexity management becomes more challenging
Solution Approach 1:
The patent implements multi-functional microcontrollers within the protection cards that can dynamically assume different roles (protection, communication, computation) based on system needs. This reduces the total number of microprocessors required while managing complexity through software-based function assignment rather than requiring separate dedicated hardware for each function.
Data Source
AI summary
Electrical distribution system for an aircraft comprising at least one electrical supply path comprising at least one power unit capable of opening or closing the connection between at least one electrical energy source and at least one device of the aircraft. The system comprises protection cards (2b, 2n) each comprising at least two microcontrollers each capable of sending a command to each power unit of the electrical supply paths protected by each protection card and, among the set of microcontrollers of the protection cards, at least two microcontrollers are provided with a communication and computation function with all of the microcontrollers of the protection cards (2b, 2n).