Ultrasonic Flow Meter Transducer Failure Detection
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Solution Overview
Problem
Ultrasonic flow meters face challenges in accurately determining whether performance degradation of transducer pairs is due to impending failure or environmental factors, making it difficult to predict and prevent transducer failures in real-time.
Innovation Solution
The method involves analyzing parameters of generated and received acoustic energy from multiple transducer pairs concurrently, using signal-to-noise ratio, signal amplitude, and noise amplitude to determine upcoming failures, allowing for real-time monitoring and reduction of environmental factor influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transducer performance is monitored over time to detect degradation, then early failure detection is improved, but it becomes difficult to distinguish between transducer failure and environmental factor changes
Solution Approach 1:
The patent introduces acoustic signals as an intermediary medium to compare transducer performance. By measuring the same acoustic signal through multiple transducer pairs simultaneously, the system creates a reference framework that allows differentiation between transducer degradation and environmental changes. The acoustic signal acts as a mediator that remains constant while transducer responses vary, enabling failure detection independent of environmental factors.
Solution Approach 2:
The system implements continuous feedback by repeatedly measuring acoustic signals through multiple transducer pairs and comparing results over time. This feedback mechanism allows the system to establish baseline performance characteristics and detect deviations indicating transducer failure. The feedback loop processes measurements from multiple transducers to distinguish between systematic environmental changes and individual transducer degradation.
2Measurement precision
If multiple transducer pairs are monitored concurrently, then measurement accuracy is improved, but system complexity increases
Solution Approach 1:
The patent merges the functions of multiple transducer pairs into a unified measurement system that shares common signal processing and control electronics. By combining the acoustic signal path through multiple transducers with centralized processing, the system achieves improved measurement precision through redundancy while minimizing the increase in overall system complexity. The merged architecture allows simultaneous monitoring of multiple transducers without requiring separate independent systems for each.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables early detection of transducer pair failures, reducing measurement errors and extending the operational life of ultrasonic flow meters by distinguishing between performance degradation caused by environmental changes and impending transducer failure.
Implementation Method 1
acoustic energy propagating between a first pair of transducers and a second pair of transducers of the fluid meter
Data Source
Figure 1A~1B
Figure 1C~4
Figure 2
AI summary
A method and system of determining forthcoming failure of transducers. At least some of the illustrative embodiments are methods comprising creating a first electrical signal representative of acoustic energy propagating between a first pair of transducers of a fluid meter, creating a second electrical signal representative of acoustic energy propagating between a second pair of transducers of the fluid meter (the creating the second electrical signal substantially concurrently with create the first electrical signal), calculating a value indicative of a relationship between a parameter of the first electrical signal a parameter of the second electrical signal, and determining whether performance of the first pair of transducers indicates upcoming failure of at least one transducer of the first pair of transducers, the determining using the value.