On-board Power Supply Disruption Recognition via Measurement Dispersion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing systems fail to reliably recognize and distinguish between parallel and serial arcs in on-board power supplies, particularly at 48 V, due to asynchronous and delayed current and voltage measurements, leading to potential damage from high-temperature arcs.
Innovation Solution
A device that uses the dispersion of measurement values from independent, asynchronous, and time-delayed measurements at different points in the on-board power supply to recognize disruptions, such as arcs, without the need for synchronization, utilizing stochastic methods to account for measurement errors and allowing for decentralized pre-processing to reduce data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If asynchronous and delayed measurements are used at different points in the power supply, then decentralized measurement is enabled, but reliable disruption recognition becomes difficult
Solution Approach 1:
The patent transforms the measurement data by calculating dispersion parameters and using stochastic methods to analyze the measurements. By changing from direct comparison of raw measurements to analysis of statistical parameters, the system can reliably detect disruptions even with asynchronous and delayed measurements from decentralized sensors
2Power
If 48 V on-board power supply is used to supply greater power, then power capacity is increased, but arc formation becomes more likely since 48 V exceeds arc ignition voltage
Solution Approach 1:
The patent implements preliminary detection of arc conditions by continuously monitoring current and voltage measurements and analyzing their dispersion. By detecting arcs in their early stages before they cause significant damage, the system enables preventive action (switching off) before the harmful effects of high-temperature arcs manifest
3Reliability
If serial arc detection is attempted by measuring current restriction, then arc detection is possible, but it is difficult to distinguish from normal load current fluctuations
Solution Approach 1:
The patent adds another dimension to the analysis by examining the dispersion and statistical characteristics of measurements taken at multiple points. Instead of relying solely on current magnitude, the system analyzes the variability and distribution of measurements across different locations and times, enabling distinction between arc-induced current restriction and normal load fluctuations
Data Source
AI summary
The present disclosure relates to a device for recognizing disruptions in an on-board power supply. The device comprises a reception unit adapted to receive a first and a second temporal sequence of measurement values, the measurement values of the first sequence being measured at a first measuring point of the on-board power supply and the measurement values of the second sequence being measured at a second measuring point of the on-board power supply differing from the first measuring point, and the measurement values representing current or voltage values, and an evaluation unit adapted to recognize the occurrence of a disruption based on a comparison of the first dispersion of the measurement values of the first sequence and a second dispersion of the measurement values of the second sequence.