Ultrasonic Inspection Device Diffracted Wave Separation
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Solution Overview
Problem
Conventional ultrasonic inspection devices face challenges in accurately determining peeling at joined locations in packaging containers due to the reception of diffracted waves, which can lead to erroneous results, and the process of using a shield member to prevent these waves is time-consuming and difficult, especially for containers with complex shapes.
Innovation Solution
An ultrasonic inspection device that includes a transmitter, a receiver, and a regulating member to separate the propagation paths of object and non-object waves, allowing for accurate determination of peeling by delaying the reception of non-object waves and improving inspection efficiency without the need for complex shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a shield member is used to block ultrasonic waves and prevent diffracted waves, then measurement precision is improved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The patent extracts and eliminates the need for shield members by using signal processing techniques. Specifically, it separates object waves from diffracted waves through waveform analysis and time-windowing, removing the physical shielding component entirely while maintaining measurement precision.
Solution Approach 2:
The patent replaces the mechanical shield member system with an acoustic-signal processing system. Instead of physically blocking diffracted waves, the system uses ultrasonic signal analysis, time-windowing, and waveform comparison to distinguish and filter out diffracted waves, substituting mechanical complexity with signal processing intelligence.
2Measurement precision
If a shield member is used to cover the end of the packaging container, then measurement precision is improved, but loss of time and ease of operation worsen
Solution Approach 1:
The patent removes the time-consuming step of placing shield members by extracting the shielding function into the signal processing domain. The system directly processes ultrasonic waveforms to identify and eliminate diffracted wave interference, eliminating the preparatory time required for physical shielding.
Solution Approach 2:
The ultrasonic inspection system performs self-service by automatically distinguishing between object waves and diffracted waves through signal analysis. The system independently identifies and filters diffracted waves without requiring external intervention to apply physical shields, making the process autonomous and time-efficient.
3Measurement precision
If a shield member is used to prevent diffracted waves, then measurement precision is improved, but adaptability deteriorates for complex shapes
Solution Approach 1:
The patent replaces the mechanical shielding approach with an adaptive signal processing system that automatically adjusts to different container geometries. The system analyzes ultrasonic wave propagation characteristics and diffracted wave patterns specific to each container shape, providing universal adaptability without requiring shape-specific shield configurations.
Solution Approach 2:
The patent changes the approach from fixed physical shielding to dynamic parameter-based signal filtering. By adjusting signal processing parameters such as time windows, frequency filters, and waveform comparison thresholds based on the specific inspection scenario, the system adapts to various container shapes and sizes without requiring physical reconfiguration of shields.
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
The device enables accurate inspection of packaging containers by separating object and non-object waves, reducing errors and simplifying the inspection process, even for containers with complex shapes, while saving time and effort.
Implementation Method 1
a transmitter that outputs ultrasonic waves toward an inspection object
Implementation Method 2
a receiver that receives at least first ultrasonic waves passed through the inspection object
Implementation Method 3
a member that regulates a second propagation path, the second propagation path being a portion of propagation paths through which the output ultrasonic waves reach the receiver
Data Source
AI summary
An ultrasonic wave inspection device includes: a transmitter that outputs ultrasonic waves toward an inspection object; a receiver that receives at least first ultrasonic waves passed through the inspection object, among the ultrasonic waves output from the transmitter; a member that regulates a second propagation path, the second propagation path being a portion of propagation paths through which the output ultrasonic waves reach the receiver, and the second propagation path being different from a first propagation path through which the first ultrasonic waves reach the receiver; and a signal controller that extracts ultrasonic waves of a predetermined time segment from at least the first ultrasonic waves, the predetermined time segment starting from a time when the first ultrasonic waves is received.