Contactor Response Signature Identification Against Counterfeit Parts
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Solution Overview
Problem
The increasing risk of contactor devices being tampered with on the aftermarket poses significant safety hazards and performance degradation in vehicles, as counterfeit devices can lead to unsafe operating conditions and degraded electrical device performance, which existing technologies fail to effectively identify.
Innovation Solution
A computer system with processing circuitry is used to provide control signals to contactor devices, analyze their response signatures through time series data, and compare them to baseline signatures to identify the type of contactor devices, ensuring compliance with manufacturer safety and regulatory standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of contactor devices is increased to meet vehicle electrical system requirements, then the vehicle's electrical functionality is improved, but the risk of tampering and counterfeit devices increases
Solution Approach 1:
The system performs preliminary identification of contactor devices by analyzing their electrical characteristics and comparing them against stored reference data. This proactive approach detects counterfeit or tampered devices before they cause safety issues, rather than waiting for failures to occur.
Solution Approach 2:
The system continuously monitors contactor device characteristics and provides feedback about their authenticity and operational status. This feedback mechanism enables real-time detection of deviations from expected behavior, allowing the vehicle system to respond appropriately to potential safety risks.
2Ease of manufacture
If contactor devices are replaced or modified by third parties, then cost savings or availability is improved, but safety and performance are degraded
Solution Approach 1:
The system applies preliminary anti-action by detecting and identifying counterfeit or non-genuine contactor devices before they can cause safety hazards. The identification system prevents unsafe operation by flagging devices that do not match the vehicle manufacturer's specifications, counteracting the potential harm from aftermarket replacements.
3Device complexity
If traditional contactor identification methods are used, then device complexity is reduced, but measurement precision and detection accuracy are insufficient
Solution Approach 1:
The system changes the parameters used for identification from simple visual or manual checks to precise electrical characteristic measurements. By analyzing multiple electrical parameters such as resistance, inductance, and switching behavior, the system achieves high measurement precision in contactor type identification without requiring overly complex hardware.
Data Source
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AI summary
A computer system comprising processing circuitry configured to provide a control signal (70) to a contactor device control circuit (32) comprising a contactor (34), the contactor device control circuit (32) being configured to carry out a state switch (72) in response to receiving said control signal (70); receive a control signal response (74) from the contactor device control circuit (32) in response to said state switch (72); obtain one or more contactor device properties (76) based on the control signal response (74) to the control signal (70); compare the one or more contactor device properties (76) to baseline contactor device properties (80), the baseline contactor device properties (80) being indicative of one or more predefined contactor device types; and based on said comparison, identify whether a type of said contactor (34) corresponds to said one or more predefined contactor device types.