Engine Control Node Architecture With Segregated Protection Functions
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Solution Overview
Problem
Existing Engine Control and Monitoring Systems (ECaMS) lack adaptability and versatility, particularly in complex engines where safety-critical performance requires segregation of control and protection functions to prevent unscheduled interruptions and failures.
Innovation Solution
The ECaMS comprises multiple processor nodes connected via a ring network, with direct connections between acquisition and output ICs, allowing for segregated control and protection functionalities and easy modification without significant software changes, using Field Programmable Gate Arrays (FPGAs) for efficient data sharing and error detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If control and protection functions are segregated into separate systems, then reliability is improved, but device complexity increases
Solution Approach 1:
The system is divided into distinct processor nodes: control processor nodes for non-safety-critical functions and protection processor nodes for safety-critical functions. Each processor node contains separate acquisition ICs, output ICs, and processors that are physically and logically segregated. This segmentation ensures that control functions and protection functions operate independently, preventing control system issues from impacting protection systems while maintaining clear functional boundaries.
2Adaptability or versatility
If the system architecture is made more adaptable and versatile, then adaptability is improved, but device complexity increases
Solution Approach 1:
The processor nodes are designed with universal interfaces and standardized communication protocols that allow them to perform multiple functions. The acquisition ICs can interface with various sensor types, and the output ICs can drive different actuator types. The ring network topology provides a universal communication framework that can accommodate different numbers and types of processor nodes, enabling the same basic architecture to be adapted for different engine types and control requirements without fundamental redesign.
Data Source
AI summary
Engine Control and Monitoring Systems (ECaMS) for engines are disclosed. An ECaMS comprises a first processor node and a second processor node. The first processor node comprises a first acquisition integrated circuit (IC), a first output IC, and a first processor. The second processor node comprises a second acquisition IC, a second output IC, and a second processor. The first acquisition IC is connected directly to the second acquisition IC.