What Is the FJD Trion P1? Handheld LiDAR Scanning Explained
The FJD Trion P1 is a SLAM-based handheld 3D laser scanner. This guide explains how it works and what it surveys.
How the FJD Trion P1 Is Used in Practice
In practice, the FJD Trion P1 is used for walk-through interior surveys where a tripod-mounted static scanner would be too slow or impractical — occupied commercial units, tenanted residential properties, schools, healthcare estates, and active construction sites all fall into this category. The surveyor carries the unit through the space at walking pace, the SLAM algorithm tracks the scanner's position in real time, and a point cloud is built up as the device moves. A single sweep of a small commercial unit typically takes thirty to sixty minutes, which is significantly faster than setting up a static scanner at multiple positions and registering the scans afterwards. Accuracy is in line with the bands defined by the RICS Measured Surveys of Land, Buildings and Utilities standard (3rd edition) for the survey levels commonly required for design, planning, and as-built purposes, although for the highest-accuracy work (e.g. heritage measured surveys for listed building consent) a tripod static instrument is normally combined with the handheld capture. Deliverables can be issued as a raw E57 point cloud, a registered cloud aligned to a chosen coordinate system, 2D CAD plans and elevations derived from the cloud, or a full Revit / IFC BIM model. The on-site requirement is a single point of contact for the duration of the walk-through, plus access to all areas in scope; loose furniture and stored items should be moved away from the walls in advance so the scanner can pick up full wall geometry. The deliverable turnaround is typically five to ten working days from the site visit, and a fixed-fee quote is provided within twenty-four hours of enquiry.