Fluid Guidance Device Fault Detection Using Control Unit
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Solution Overview
Problem
Existing fluid guidance devices face challenges in detecting faulty states, such as blockages or increased flow resistance, which can be caused by wear, damage, contamination, or environmental factors, without the need for additional expensive sensors.
Innovation Solution
A method that detects a change parameter of the operating parameter, such as time or derivative changes, using existing sensors and control units, allowing for the inference of faulty states by comparing these parameters with reference values, and outputs error signals for maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional expensive sensors are used to detect faulty states, then measurement precision is improved, but device complexity and cost increase
Solution Approach 1:
The fluid delivery unit itself serves as the measurement tool by utilizing its existing operating parameters (power consumption, rotation speed) to detect faulty states. The system monitors its own performance characteristics without requiring external sensors, thereby achieving self-diagnosis functionality.
Solution Approach 2:
The patent replaces physical sensors with a control unit that performs electronic evaluation of operating parameters. Instead of using mechanical or physical sensing elements to detect blockages, the system uses computational analysis of power consumption and rotation speed data to infer faulty states.
2Reliability
If operating parameters are continuously monitored, then reliability is improved, but energy consumption increases
Solution Approach 1:
The control unit continuously evaluates operating parameters and provides feedback about the system's health status. By monitoring power consumption and rotation speed relationships, the system can detect deviations indicating faulty states without requiring additional energy-intensive sensing mechanisms.
Solution Approach 2:
The system detects faulty states by analyzing changes in the relationship between operating parameters rather than monitoring absolute values continuously. By evaluating deviations from expected parameter relationships (e.g., power consumption vs. rotation speed), the system achieves reliable detection with minimal energy overhead.
Data Source
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AI summary
The invention relates to a method for fault detection in a fluid guidance device, in particular a combustion plant (14), wherein in at least one method step an operating parameter (16) of a fluid conveying unit (18) of the fluid guidance device is detected. It is proposed that in at least one method step a change parameter of the operating parameter (16) is detected.