High-Voltage Loop Interruption Localization
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Solution Overview
Problem
Existing high-voltage monitoring systems in vehicles cannot accurately determine the location of interruptions in current loops, leading to potential safety hazards and costly troubleshooting, as they rely on detecting voltage differences between only two points, which is insufficient for precise fault localization.
Innovation Solution
A method and device that sense voltages at at least three points on a current loop, using microcontrollers or processor units within components, to detect interruptions and determine their location with higher accuracy, thereby interrupting the voltage supply and discharging the high-voltage arrangement safely.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If voltage monitoring is performed at only two points in the current loop, then the monitoring system remains simple, but the ability to accurately locate interruptions is insufficient
Solution Approach 1:
The current loop is divided into multiple monitoring segments by placing voltage sensing points at different locations (at least three points including start and end). This segmentation allows the monitoring system to identify which specific segment contains an interruption, thereby improving location accuracy without requiring a completely complex new system architecture.
Solution Approach 2:
The monitoring approach transitions from two-point voltage comparison to multi-point voltage measurement along the current loop path. By adding spatial dimensionality to the monitoring points, the system can triangulate and pinpoint interruption locations more accurately, converting a binary detection problem into a localized identification problem.
2Measurement precision
If multiple voltage points are monitored to improve interruption location accuracy, then fault localization precision increases, but the device complexity and cost increase
Solution Approach 1:
The voltage sensing mechanism serves multiple functions: it detects interruptions, locates their positions, and provides diagnostic information. By making the monitoring system multi-functional, the patent reduces the need for separate specialized components, thereby improving manufacturing ease while maintaining high measurement precision through multi-point monitoring.
Solution Approach 2:
The existing voltage sensing infrastructure in the high-voltage arrangement is utilized for monitoring purposes. The system leverages its own operational voltage signals to detect and locate interruptions without requiring entirely separate measurement systems, thereby reducing implementation complexity and manufacturing costs while achieving accurate fault localization.
3Loss of time
If interruption location is not accurately determined, then troubleshooting time and costs increase, but adding more monitoring points increases system complexity
Solution Approach 1:
The monitoring system continuously measures voltages at multiple points before interruptions occur, establishing a baseline understanding of the current loop's electrical characteristics. This preliminary data collection enables rapid interruption location detection and reduces troubleshooting time when faults occur, as the system already has reference information about normal operating conditions at each monitoring point.
Solution Approach 2:
The system uses voltage measurements from multiple points to provide real-time feedback about the integrity of different segments of the current loop. When an interruption occurs, the feedback mechanism quickly identifies which segment is affected by comparing voltage patterns, thereby reducing troubleshooting time without requiring complex manual diagnostic procedures.
Data Source
AI summary
Devices and methods for monitoring a high-voltage arrangement wherein a current loop runs through elements of the high-voltage arrangement that are monitored. Voltages are sensed on at least three points of the current loop. On the basis of the sensed voltages, an interruption of the current loop is detected and, in response, a high-voltage supply is interrupted. The interruption is localized on the basis of the sensed voltages.