Thermomorphic Sensor for Arc Fault Prevention
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Solution Overview
Problem
Existing electrical systems, particularly photovoltaic (PV) systems, face the risk of arc faults due to manufacturing defects, corrosion, thermal expansion, and improper installation, which can lead to fires and human trauma, despite current protection devices only detecting electrical surges after an arc occurs, failing to preempt the fault.
Innovation Solution
A sensor device is installed within electrical connectivity to detect changes in thermomorphic substances due to heat, generating an unsafe condition signal that activates an indicator and communication system to alert homeowners or cloud services before an arc fault occurs, using a combination of wired and wireless communication to mitigate the risk of arcing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional protection devices are used to detect electrical surges, then arc faults can be detected after they occur, but they fail to preempt the fault and prevent fires
Solution Approach 1:
The patent applies preliminary action by monitoring thermal conditions and detecting precursors to arc faults before they occur. The system uses temperature sensors and thermal imaging to identify overheating components, loose connections, and other unsafe conditions that precede arc faults, enabling preventive action rather than reactive response after the arc occurs.
Solution Approach 2:
The system implements continuous feedback by monitoring electrical parameters, thermal conditions, and environmental factors in real-time. The monitoring device provides ongoing assessment of connectivity safety, comparing measured values against safe operating thresholds and alerting operators when precursors to arc faults are detected, creating a closed-loop preventive protection system.
2Reliability
If thermal monitoring is implemented to detect precursors to arc faults, then proactive protection is achieved, but device complexity increases
Solution Approach 1:
The monitoring device is designed with multi-functionality, serving as an integrated platform that performs electrical parameter monitoring, thermal imaging, environmental sensing, and communication functions. This universal device consolidates multiple specialized components into one system, reducing overall complexity while maintaining comprehensive preventive monitoring capabilities.
Solution Approach 2:
The system incorporates self-service features including automatic threshold adjustment based on environmental conditions, self-diagnosis of sensor failures, and automated alert generation. The device autonomously manages its own operation and maintains optimal monitoring parameters without requiring constant external calibration or intervention, simplifying deployment and maintenance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides proactive protection by identifying and alerting to unsafe conditions before an arc fault happens, preventing fires and human disasters by allowing for timely mitigation of electrical connectivity issues, meeting NEC requirements and enhancing safety in PV systems.
Implementation Method 1
thermal expansion and contraction at the joints by the thermal dynamics of current on the conductor
Implementation Method 2
a photon source operably coupled to the first end, the sensor device further comprising a photon monitor in communication with the second end to measure an intensity of photons
Implementation Method 3
Ohmic heating due to corrosion, or thermal expansion and contraction at the joints by the thermal dynamics of current on the conductor
Data Source
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AI summary
A system for protection from fires and electrical shock of components used in construction of electrical systems is disclosed using a sensing degree of characteristic before an arc fault, with the purpose to detect, annunciate, and remove the hazard before an electrical are occurs. The present application teaches a device installed in, or proximal to, electrical connectivity to provide protection from unsafe conditions that can result in an electrical are fault in a PV or other electrical connectivity.