Ultrasonic Inspection Timing Layout for Crosstalk Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing inspection devices using ultrasonic waves face challenges in improving detection accuracy due to crosstalk and noise, particularly at the ends of inspection targets, which affect the reliability of the inspection process.
Innovation Solution
The inspection device employs a configuration where the first and second ultrasonic waves are transmitted with specific time differences and distances between receiving and transmitting elements, ensuring that the time difference and distance satisfy certain conditions to suppress crosstalk and noise, thereby enhancing detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple ultrasonic waves are transmitted simultaneously or with small time intervals, then inspection efficiency is improved, but crosstalk and noise increase reducing detection accuracy
Solution Approach 1:
The patent applies periodic action by transmitting ultrasonic waves in a structured burst pattern with specific time intervals. Multiple transmitting elements send ultrasonic waves periodically with time differences that satisfy specific conditions, allowing efficient multi-element operation while maintaining signal distinguishability through the periodic timing structure
Solution Approach 2:
The patent implements preliminary action by pre-calculating and setting specific time differences between ultrasonic wave transmissions from different elements. The time differences are determined in advance to satisfy the condition Δt > (2n+1)×Tp/4, ensuring that crosstalk and noise are suppressed before the inspection process begins
2Measurement precision
If ultrasonic waves are transmitted with large time differences, then crosstalk and noise are suppressed improving detection accuracy, but inspection speed decreases
Solution Approach 1:
The patent applies parameter changes by optimizing the time difference parameter between ultrasonic wave transmissions. Instead of using excessively large time differences, the patent identifies and implements the minimum sufficient time difference that satisfies Δt > (2n+1)×Tp/4, thereby maintaining detection accuracy while maximizing inspection speed through optimal parameter selection
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 configuration effectively suppresses crosstalk and noise, allowing for high-accuracy inspections by positioning unnecessary signal components between valid signals, thus improving the overall detection precision.
Implementation Method 1
a first transmitting element configured to transmit a first ultrasonic wave, the first ultrasonic wave including a plurality of first burst waves having a first period Tp
Data Source
Figure 1A~1B
Figure 2~3B
Figure 4A~5B
AI summary
An inspection device and an inspection method capable of improving detection accuracy are provided. According to one embodiment, an inspection device includes an element section and a transport section. The element section includes first and second transmitting elements, and first and second receiving elements. The element section includes a first transmitting element capable of transmitting a first ultrasonic wave including a plurality of first burst waves having a first period Tp, a second transmitting element capable of transmitting a second ultrasonic wave including a plurality of second burst waves having the first period Tp, a first receiving element into which the first ultrasonic wave is incident, and a second receiving element into which the second ultrasonic wave is incident. A first distance L1 (m) between the first receiving element and the second receiving element, a first time difference Δt1 (s) between one of the plurality of first signals and one of the plurality of second signals, a propagation velocity vx (m/s) of the first and second ultrasonic waves in a space, the first period Tp (s), and the first time width Tw (s) satisfy n x Tp + Tw/4 < Δt1 + L1/vx < (n + 1) x Tp - Tw/4.