Ultrasonic Probe Random Transmission Sequence for Interference Reduction
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Solution Overview
Problem
Existing ultrasonic wave probing methods for detecting discontinuities in products suffer from interference issues and degraded signal-to-noise ratios, particularly at high speeds, limiting their effectiveness and speed of execution.
Innovation Solution
A method utilizing a probe with a plurality of transducers that transmit and receive ultrasonic waves, where a transmission sequence is defined with randomly and uniformly distributed transducers and time offsets, allowing for focused signal calculation and synthetic signal analysis to enhance detection quality and reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple beams are used simultaneously in several directions, then detection coverage is improved, but interference at reception occurs and signal-to-noise ratio is degraded
Solution Approach 1:
The probe is divided into multiple independent transducers that can be selectively activated. Instead of using all transducers simultaneously, the method segments the transmission process by activating only one or a few transducers at a time according to a predetermined sequence, thereby maintaining detection coverage while reducing interference and improving signal-to-noise ratio.
2Measurement precision
If full matrix of ultrasonic transmit-receive array data is captured and processed, then detection quality is improved, but execution speed is reduced
Solution Approach 1:
A predetermined transmission sequence is established before the actual detection process. The sequence pre-defines which transducers to activate and in what order, allowing the system to prepare the detection path in advance. This preliminary organization enables faster execution while maintaining detection quality by avoiding real-time complex decision-making.
Solution Approach 2:
Instead of capturing and processing the complete full matrix of ultrasonic data, the method selectively processes only the necessary transmit-receive pairs defined by the predetermined sequence. This partial action approach maintains adequate detection quality while significantly reducing the computational burden and improving execution speed.
3Measurement precision
If transducers transmit one after another with sequential processing, then interference is reduced, but detection speed is slowed
Solution Approach 1:
The method employs periodic transmission sequences where transducers are activated in a predetermined repeating pattern. This periodic structure allows the system to maintain reduced interference through sequential transmission while optimizing detection speed by establishing an efficient, rhythmic transmission cycle that minimizes idle time between measurements.
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 improves the detection quality of discontinuities, particularly at high speeds, by minimizing interference and allowing for fast and accurate detection with a single transmission sequence, enabling efficient non-destructive testing of moving products.
Implementation Method 1
a plurality of transducers forming an active surface and able to transmit and receive an ultrasonic wave in the medium
Implementation Method 2
Techniques using the propagation of ultrasonic waves are highly effective in detecting discontinuities or defects in the material of the product
Data Source
AI summary
Disclosed is a method including the steps of defining a transmission sequence, in which a plurality of transmit transducers is uniformly and randomly selected among the transducers of a probe on the active surface of the probe and a time offset is uniformly and randomly defined for each transmit transducer over a predetermined transmission duration. Subsequently, the transmission sequence is transmitted in the medium by the plurality of transmit transducers, the reception signals are received and recorded and they are processed with a focal law suitable for the transmit transducers and the time offsets used in order to thus derive a level of detection.