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Proceedings Paper

Optical pipe-scanning system for sewers: RODIAS
Author(s): Wolfram Kaempfer; Wolfgang Ziehl
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Paper Abstract

Up to 50 percent of the German sewer system is damaged. The estimation for the restoration costs is about 100 milliards DM. Respective to the German environmental laws the technical state of sewers have to be checked regularly be means of suitable inspection technology. At the present state of art the inspection will be carried out by color video turn-stewing cameras mounted onto remotely controlled vehicles. Thus, depending on the experience and the capability of the operator diagnosis failures can not be avoided. An exactly quantitative measuring coverage of pipe damages such as cracks, fractures, inrised connections is not feasible by means of conventional inspection techniques. Compared with most TV-based systems on the market, RODIAS LMK200 is equipped with a high resolution CCD matrix camera and an integrated laser distance measurer, by which a more qualified detection of damage sizes, type and volume can be achieved. The geometry measuring can be carried out by means of triangulation techniques without optical distortion and with precision of 0.1...0.5 mm. The position of the TV- camera head relative to the object plane is of secondary minor. The measured values will be displayed in the form of line or surface scans. The technical test of the RODIAS prototype in real municipal sewage systems is the object of on-going research.

Paper Details

Date Published: 14 November 1996
PDF: 9 pages
Proc. SPIE 2947, Nondestructive Evaluation of Utilities and Pipelines, (14 November 1996); doi: 10.1117/12.259161
Show Author Affiliations
Wolfram Kaempfer, Univ. Weimar (Germany)
Wolfgang Ziehl, Optimess GmbH (Germany)

Published in SPIE Proceedings Vol. 2947:
Nondestructive Evaluation of Utilities and Pipelines
Martin Prager; Richard M. Tilley, Editor(s)

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