What Does Laser Profiling Mean?
Laser profiling, in trenchless rehabilitation, is an accurate method of analyzing damage to an existing pipeline. Laser profiling is used with CCTV cameras, and also as a survey tool, to record and measure the extent of damage within a pipe. Laser profiling is also used to check newly installed pipes before asphalt is laid and the pipeline is commissioned. The two methods of laser profiling are direct measurement and laser light ring.
Trenchlesspedia Explains Laser Profiling
Laser profiling, using direct measurement, involves the use of a highly specialized and sophisticated pipe camera with its lens fitted with laser diodes. The camera is connected to the operator's computer. The operator drives the camera while taking down measurements and noting discrepancies. The camera allows for a real time view of the pipelines inclination and can detect change in circumference. debris, cracks, and damage which is viewed by the operator in order to accurately pin point the location of the repair.
Laser profiling, using a laser light ring, uses a camera with a laser rod attached to its front. The laser emits a ring of light that traces the circumference of the pipe within the view of the camera, which calculates the average interior of the pipe. This calculation is dependent on the pipe measurements input by the operator and the calibration of the camera. Error in these measurements can cause error in the end results. The operator can visualize the causes of deflection such as debris and cracks.
Of the two methods direct measurement is preferred because it is accurate and is able to pin point the exact location of repair.