Monitoring Module Circuit for Vibration-Resistant Cable Fault Detection
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Solution Overview
Problem
Existing electrical installations in aircraft, particularly those using inductive sensors for cable interruption detection, are sensitive to vibrations and consume excessive power, leading to increased costs and complexity.
Innovation Solution
The proposed electrical installation incorporates a monitoring module with transistors and resistors to detect cable interruptions by generating distinct potentials on a measurement cable, allowing for efficient and vibration-resistant fault detection without the need for complex sensors, and reduces power consumption by simplifying the monitoring process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inductive sensors are used for cable interruption detection, then cable fault detection capability is improved, but the system becomes sensitive to vibrations and consumes excessive power
Solution Approach 1:
The patent replaces inductive sensors (which rely on electromagnetic induction and are sensitive to vibrations) with a monitoring module using transistors and resistors that detect cable interruptions through voltage level changes. This substitution eliminates vibration sensitivity while maintaining fault detection capability through electronic voltage monitoring instead of magnetic field sensing.
Solution Approach 2:
The invention changes the detection parameter from magnetic field induction (prone to vibration interference) to voltage level monitoring. The monitoring module detects cable interruptions by monitoring voltage changes at specific nodes, transforming the detection mechanism to one that is insensitive to mechanical vibrations while consuming less power.
2Reliability
If inductive sensors are used for cable interruption detection, then cable fault detection capability is improved, but power consumption increases
Solution Approach 1:
The patent replaces power-consuming inductive sensors with a monitoring module based on transistors and resistors that detect faults through passive voltage monitoring. This substitution significantly reduces power consumption while maintaining the ability to detect cable interruptions through voltage level changes at monitoring nodes.
Solution Approach 2:
The invention uses simple, low-cost electronic components (transistors and resistors) instead of complex and power-hungry inductive sensors. These simple components consume minimal power and can be easily replaced if needed, providing a cost-effective and energy-efficient solution for cable monitoring.
3Reliability
If inductive sensors are used for cable interruption detection, then fault detection is achieved, but device complexity increases
Solution Approach 1:
The patent replaces complex inductive sensors with a simple monitoring module composed of basic electronic components (transistors and resistors). This substitution reduces device complexity by using straightforward voltage monitoring circuitry instead of sophisticated magnetic field sensing equipment, while maintaining effective fault detection capability.
Solution Approach 2:
The invention extracts only the essential function of fault detection from complex sensor systems, implementing a simplified monitoring module that focuses solely on detecting voltage changes indicative of cable interruptions. This extraction of core functionality eliminates unnecessary complexity while preserving detection reliability.
Data Source
AI summary
The disclosure relates to an electrical installation comprising a monitoring module positioned between a sensor connected to a measurement cable and first and second supply cables for the sensor. The monitoring module comprises a first transistor comprising first and second power electrodes and a control electrode, the first and the second power electrodes of the first transistor being electrically connected to the second supply cable and to the measurement cable, respectively, so that when the first transistor is in the closed state thereof, a first fault value is generated on the measurement cable. The control electrode of the first transistor is connected to the first supply cable so that the loss of current in the first supply cable, caused by the interruption of the current, automatically triggers the switching of the first transistor to the closed state thereof.