Remote Acoustic Transducer Evaluation System
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Solution Overview
Problem
Traditional methods for testing ultrasound transducers are cumbersome and often require trained technicians, and the equipment may not be readily available or properly calibrated, leading to significant downtime when transducers need to be evaluated off-site.
Innovation Solution
A remote evaluation system that determines the operation state of acoustic transducers by receiving test response signals, defining weak and dead thresholds, and assigning a pass or failed state based on the number of weak elements, allowing for remote assessment without the need for on-site technicians or specialized equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional testing methods are used for acoustic transducers, then measurement precision can be achieved, but device complexity and loss of time increase significantly
Solution Approach 1:
The acoustic transducer performs self-diagnosis by generating and receiving its own test signals through the echo test mechanism, eliminating the need for external testing equipment and trained technicians. The transducer's piezoelectric elements automatically convert electrical test signals to acoustic waves and back to electrical signals for analysis.
Solution Approach 2:
A signal processing system acts as an intermediary between the test signal generator and the evaluation system. This intermediary processes the raw echo signals, filters noise, and prepares data for analysis, enabling automated remote evaluation without requiring complex on-site testing infrastructure.
2Measurement precision
If traditional testing methods are used for acoustic transducers, then measurement precision can be achieved, but device complexity increases
Solution Approach 1:
The invention extracts only the essential testing function from complex traditional testing equipment. By using the transducer's own piezoelectric properties to generate and detect signals, the system eliminates the need for external acoustic couplers, impedance matching networks, and specialized measurement instruments.
Solution Approach 2:
The signal processing system performs multiple functions: generating test signals, receiving echo signals, processing the signals, determining element status, and providing feedback. This multi-functional approach replaces what would traditionally require separate specialized equipment for each function.
3Loss of time
If off-site evaluation is performed for acoustic transducers, then loss of time is reduced, but measurement precision may be compromised
Solution Approach 1:
The invention replaces complex mechanical testing setups with an automated electronic signal processing system. The digital signal processing algorithms analyze echo characteristics to determine transducer element status, eliminating the need for physical acoustic coupling and mechanical alignment that would be difficult to replicate remotely.
4Productivity
If automated evaluation systems are implemented, then loss of time is reduced, but device complexity increases
Solution Approach 1:
The system performs preliminary signal processing and analysis automatically during the testing process. By pre-processing the echo signals and automatically determining element status before final evaluation, the system streamlines the workflow and reduces manual intervention requirements.
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
Enables efficient remote evaluation of ultrasound transducers, reducing downtime and the need for specialized equipment, while providing a reliable assessment of their operational state.
Implementation Method 1
A typical ultrasound transducer includes a transducer head with transducing elements, which are usually formed of piezo-electric material
Data Source
AI summary
A method of operating a remote evaluation system to determine an operation state of an acoustic transducer is described. The method includes operating the remote evaluation system to: receive a test response signal received from the acoustic transducer comprising a plurality of transducer elements; determine a weak operation range and a dead threshold based on the test response signal; for each transducer element, determine whether that transducer element is one of a weak element and a dead element based on the weak operation range and the dead threshold; in response to determining a transducer element comprises the dead element, assign a failed state as the operation state, otherwise, determine whether a number of weak elements exceeds an acceptable weak element threshold, and if so, assign the failed state as the operation state, otherwise assign a pass state as the operation state; and transmit the operation state to the testing device.