A technology for sewer pipe inspection (Part 2): Experimental assessment of a new laser profiler for sewer defect detection and quantification

作者：Lepot Mathieu^*; Stanic Nikola; Clemens Francois H L R

来源：Automation in Construction, 2017, 73: 1-11.

DOI：10.1016/j.autcon.2016.10.010

• Linear infrastructure
• Asset management
• CCIV
• Camera
• Laser
• Uncertainty
• Bias
• Laboratory test
• Validation
• Prototype

In order to test the laser-scanning device presented by Stanic, Lepot, Catieau, Langeveld and Clemens [1], laboratory experiments have been performed. Various objects, covering a wide range of sizes, shapes, materials, colours and reflectiveness, have been installed in a concrete pipe and scanned by the prototype in order to identify potential object characteristics that may affect measurement uncertainty and/or create bias. By taking into account both uncertainties (on scanned and measured sizes), scanned dimensions have been compared to measurements performed with a calliper or a ruler: overall the values are mutually consistent. The proposed prototype is suitable for sewer inspections: displaced joints, cracks, deposits can be accurately measured without any bias by comparison to CCTV. Uncertainty in the measurement appears to be unaffected by humidity or fat deposits.

• 出版日期2017-1