A device and method for in-pipe inspection based on vibrational excitation
By using a vibration-excitation-based pipeline inspection device, vibration signals are collected using a force hammer and an acceleration sensor. Combined with a Fourier transform algorithm, hidden structural problems in pipelines are identified, solving the problems of large size and inability to identify hidden defects in existing devices, thus achieving efficient and accurate pipeline inspection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SINOMACH SENSING TECH CO LTD
- Filing Date
- 2026-06-16
- Publication Date
- 2026-07-17
AI Technical Summary
Existing pipeline inspection devices are bulky and cannot identify hidden structural problems in pipelines, such as microcracks, stiffness reduction, loose connections, and hidden thinning.
A vibration-excitation-based pipe inspection device is used. The pipe is struck by a hammer and the vibration response signal is collected by an accelerometer. The frequency response function is calculated by combining the fast Fourier transform algorithm, the modal parameters are extracted, and the results are compared with the reference modal parameters to identify structural defects.
It enables accurate identification of hidden structural problems in pipelines, reduces the size of the detection device, improves detection efficiency, and reduces the rate of missed detections.
Smart Images
Figure CN122409847A_ABST