Power Distribution Node Switching Pattern Validation
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Solution Overview
Problem
In electrical power distribution systems, particularly in aircraft, there is a need to validate the operational status of power distribution nodes to ensure reliable and safe power delivery, as existing systems lack effective methods to detect malfunctions in controllable switching elements before they lead to failures or safety hazards.
Innovation Solution
A power distribution node with a controllable switching element, an electrical sensor, and a monitoring controller module that encodes a validation signal in a switching pattern, allowing the system to validate the actual switching pattern against the desired one, thereby determining the operational status and providing an indication of any deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a controllable switching element is used to control power delivery, then power distribution flexibility and control capability are improved, but the risk of undetected malfunctions and safety hazards increases
Solution Approach 1:
The patent implements a feedback mechanism where the actual switching pattern is sensed and compared against the desired switching pattern. The monitoring controller receives feedback about the switching element's operation and can detect deviations, enabling the system to identify malfunctions and take corrective action, thus resolving the reliability issue while maintaining control flexibility
Solution Approach 2:
The system performs preliminary validation by comparing the desired switching pattern with the actual switching pattern before failures can propagate through the power distribution system. This proactive monitoring approach allows the system to detect and address issues before they lead to safety hazards, maintaining both flexibility and reliability
2Reliability
If validation monitoring is implemented, then system reliability and safety are improved, but device complexity increases
Solution Approach 1:
The monitoring controller serves multiple functions: it generates the desired switching pattern, senses the actual switching pattern, compares the two patterns, and determines system health status. By consolidating these functions into a single controller, the patent achieves comprehensive validation monitoring without proportionally increasing system complexity
Solution Approach 2:
The switching element effectively monitors itself by having its actual switching pattern sensed and compared against the desired pattern. The system validates its own operation through self-comparison, eliminating the need for separate complex validation hardware and reducing overall system complexity while maintaining high reliability
Data Source
AI summary
A method and device for operating a power distribution node can include a controllable switching element configured to switch between supplying a power supply to an electrical load and not supplying the power supply to the electrical load, an electrical sensor connected in series to the controllable switching element and configured to generate a monitoring signal representative of an actual switching pattern of the controllable switching element, and a monitoring controller module receiving the monitoring signal.