Ultrasonic Inspection Probe Transparent Chassis Pattern Reading
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Solution Overview
Problem
Existing ultrasonic probes face challenges in accurately reading patterns on test objects due to interference from air bubbles and reflected light, which can hinder the continuous reading of patterns and flaw detection.
Innovation Solution
An inspection probe system with a movable ultrasonic probe, a reader, and a transparent, sonic wave-permeable chassis, where the ultrasonic probe is fixed to ensure the incident ultrasonic wave point is within the reader's angle of view, and the illumination is angled to prevent reflected light from interfering with pattern reading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the optical sensor reads the pattern on the test object continuously, then the position detection is maintained, but air bubbles may be inserted between the pattern and optical sensor without being noticed, or reflected light may hinder accurate reading
Solution Approach 1:
The system uses the ultrasonic wave incident point information as feedback to verify whether the optical sensor is correctly positioned and reading the pattern. By comparing the reader's angle of view with the ultrasonic wave incident point position, the system can detect anomalies such as air bubbles or reflected light interference that would cause reading errors, while maintaining continuous operation.
Solution Approach 2:
The chassis is made of a transparent material that is both optically transparent for the reader to read the pattern and acoustically permeable for ultrasonic waves to pass through. This composite material property allows both the optical reading function and ultrasonic inspection function to operate simultaneously without mutual interference.
2Measurement precision
If the ultrasonic probe is positioned to transmit ultrasonic waves to the test object, then flaw detection is performed, but the incident point may fall outside the reader's angle of view, preventing pattern reading
Solution Approach 1:
The system adds a spatial dimension constraint by defining a specific angular relationship between the ultrasonic probe and the reader. The ultrasonic probe is positioned within the reader's angle of view, creating a three-dimensional spatial configuration where both functions can coexist. This dimensional arrangement ensures that the incident point of ultrasonic waves always falls within the readable area of the pattern.
3Illumination intensity
If the illumination is positioned to illuminate the pattern for reading, then the pattern becomes visible to the reader, but reflected light from the test object surface may interfere with the reading
Solution Approach 1:
The illumination is positioned asymmetrically relative to the reader's optical axis. By placing the illumination at an angle rather than directly in line with the reader, the system creates an asymmetric lighting configuration where reflected light from the test object surface does not enter the reader's optical path, eliminating glare and interference while maintaining sufficient illumination for pattern reading.
Data Source
AI summary
Disclosed is an inspection probe of an inspection system that includes an ultrasonic probe that is freely movable on a test object and irradiates the test object with an ultrasonic wave to detect a reflected wave, and a calculation unit that executes arithmetic processing according to a detection result according to the ultrasonic probe to acquire a flaw detection result of the test object. The inspection probe includes a chassis that is freely movable on a sheet material where a two-dimensional pattern disposed on the test object and indicating a position on the test object is drawn. The ultrasonic probe is fixed to the chassis so that an incident point of an ultrasonic wave that is incident onto an opposing surface of the test object from the ultrasonic probe is within an angle of view of the reader which reads the two-dimensional pattern.