Three dimensional laser measurement technology quickly obtains the three-dimensional coordinates of various points on the surface of an object by emitting a laser beam and receiving reflected signals, combined with angle information from a scanning device, achieving high-precision, non-contact three-dimensional data acquisition. Its technical system mainly revolves around the principle of laser ranging, with core methods including pulse ranging, phase ranging, laser triangulation, etc.
Technical classification:
Pulse Ranging (TOF): By calculating the time difference between laser emission and reflection reception, combined with the speed of light to calculate distance, it is suitable for ultra long distance measurement (such as hundreds of meters to several kilometers), but the accuracy is limited by the frequency of the pulse counter, usually in the range of Dami.
Phase distance measurement method: using the phase difference of continuous laser waves to calculate distance, with an accuracy of millimeter level, suitable for high-precision measurement of medium and short distances (such as within 100 meters).
Laser triangulation: By forming a triangular geometric relationship between a laser projector, camera, and the object being measured, depth information is calculated with an accuracy of sub millimeter level. It is commonly used in industrial measurement and reverse engineering.
Core application scenarios:
Manufacturing industry: 3D measurement of automotive parts, machine parts, etc., comparing with CAD design to identify deviations and ensure product quality.
Architecture and Cultural Relics Protection: Quickly obtain 3D data of buildings or cultural relics, generate 3D models, assist in repair and protection, model archiving, and digital city construction.
Public safety: used for investigating fire and traffic accident scenes, obtaining accurate 3D point cloud data, and extracting key information.
Power management: Through a multi platform LiDAR system, high-precision laser point clouds and high-resolution digital images can be quickly obtained for new line design, dangerous point patrol inspection, and line asset management.