![]() ![]() Field validation included the comparison of manual inspections with manual inspections considered "ground-truth." The primary outcome of this project was field-validated evidence of the technology’s ability to automatically detect changes in the track structure and highlight these changes for review and possible action. Pavemetrics researchers used algorithms to record and detect changes in fasteners, anchors, spikes, ties, joints, and ballast-as well as record rail manufacturing information. laser plane is used to triangulate new 3D point coordinates of the. ![]() The LRAIL system includes a library of computer algorithms designed to make automatic measurements, inventory features, and detect changes in trackbed infrastructure. simple hand-held laser line projector, a calibration rig and a standard camera. In this project, LRAIL was mounted on a hi-rail testing vehicle and tested at Amtrak’s Bear, DE facility and on mainline track. LRAIL is a rail inspection system based on the principle of laser triangulation and combines pulsed high-power, invisible, laser line projectors and synchronized cameras to capture a high-resolution-intensity image and 3-dimensional range profile of the railway trackbed. How Laser Triangulation Sensors Work Laser triangulation sensors contain a solid-state laser light source and a PSD or CMOS/CCD detector. teamed with Amtrak to demonstrate the feasibility of automated track change detection using its Laser Rail Inspection System (LRAIL). ![]()
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