DC-DC Converter Current Ratio Plausibility Check Without Redundant Sensors
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Solution Overview
Problem
The reliability of sensor-detected measured values in DC-to-DC converters is critical for safe and reliable operation, but existing systems often require redundant sensors to ensure accuracy, which increases costs.
Innovation Solution
A control device for DC-to-DC converters that calculates two different ratios between input and output currents using different parameters, allowing for the detection of malfunctions without redundant sensors by identifying discrepancies between the calculated ratios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundant sensors are used to ensure measurement reliability, then the reliability of sensor-detected measured values is improved, but the device complexity and cost increase
Solution Approach 1:
The system uses its own existing sensors and operational parameters to verify measurement reliability. The control device calculates expected relationships between measured values and compares them against actual sensor readings, allowing the system to self-verify without external redundant sensors.
Solution Approach 2:
The control device continuously monitors the consistency between different measured values by calculating expected relationships (e.g., power balance, current ratios) and comparing them with actual sensor readings. When deviations exceed thresholds, the system triggers fault detection and can activate backup sensors or safe operating modes.
2Reliability
If redundant sensors are used to ensure measurement reliability, then the reliability of sensor-detected measured values is improved, but the cost increases
Solution Approach 1:
The system uses its own existing sensors and operational parameters to verify measurement reliability. The control device calculates expected relationships between measured values and compares them against actual sensor readings, allowing the system to self-verify without external redundant sensors.
Solution Approach 2:
The control device continuously monitors the consistency between different measured values by calculating expected relationships (e.g., power balance, current ratios) and comparing them with actual sensor readings. When deviations exceed thresholds, the system triggers fault detection and can activate backup sensors or safe operating modes.
3Reliability
If multiple calculation methods are used to verify measured values, then the reliability of control parameters is improved, but the computational complexity increases
Solution Approach 1:
The system uses its own existing sensors and operational parameters to verify measurement reliability. The control device calculates expected relationships between measured values and compares them against actual sensor readings, allowing the system to self-verify without external redundant sensors.
Solution Approach 2:
The control device continuously monitors the consistency between different measured values by calculating expected relationships (e.g., power balance, current ratios) and comparing them with actual sensor readings. When deviations exceed thresholds, the system triggers fault detection and can activate backup sensors or safe operating modes.
Data Source
AI summary
The invention relates to the verification of operating parameters, in particular input and output values of a DC-to-DC converter which are detected by a sensor. For this purpose, the ratio between the input current and the output current of a DC-to-DC converter is calculated on the basis of two different calculation methods, wherein the different calculation methods are at least partly based on different parameters. If the two calculation methods lead to the same or at least approximately the same ratio of input current to output current, a plausibility check can thus be run on the reliability of the parameters being used.