Ultrasonic flaw detection device for steel material detection
By converting the electromagnetic interference of the drive motor into a synchronous trigger reference signal for the ultrasonic flaw detection device, the problem of reduced signal-to-noise ratio caused by electromagnetic interference is solved, achieving efficient steel inspection and improving defect detection capability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- LONGQING SOUTHEAST (HAINAN) GREEN BUILDING CO LTD
- Filing Date
- 2026-05-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing ultrasonic flaw detection devices cause a sharp drop in the signal-to-noise ratio of echo signals due to electromagnetic interference generated by the drive motor during steel inspection, leading to missed defects and misjudgments. Existing shielding solutions cannot eliminate the interference at its source, increasing the cost and size of the device.
An electromagnetic interference signal extraction circuit, a phase-locked loop synchronous triggering unit, and an ultrasonic control module are used to convert the electromagnetic interference generated by the drive motor into a synchronous triggering reference signal for ultrasonic flaw detection. After processing by the phase-locked loop synchronous triggering unit, an ultrasonic triggering reference signal that is strictly synchronized with the walking displacement is generated, thereby achieving the de-interference of ultrasonic pulse emission and defect echo signals.
It significantly improves the signal-to-noise ratio of defect echoes and the ability to detect minute defects, avoiding the need for additional independent displacement sensors and improving the accuracy and efficiency of detection.
Smart Images
Figure CN122409841A_ABST