Laser Remote Inspection of Live Contact Wire for Railways
Based on an optical structured light method an opto-electronic system for automatic noncontact distant measurements of wear and defects detection for a contact wire electro-supply network is presented. The created industrial system prototype measures the main technological wire parameters, first of all, the remaining height with RMS error down to 0,15 mm and the wire cross-section area with RMS error of 1,5 mm2. Measurement results are sufficient for confident decision about the replacement of worn-out contact wires of electro-supply network. This method is also fit for automatic wire wear measurement and defects detection for trams, trolleybuses and other electro-supply vehicles.
Wei Gao, Yasuhiro Takaya, Yongsheng Gao and Michael Krystek
Y. V. Chuguy et al., "Laser Remote Inspection of Live Contact Wire for Railways", Key Engineering Materials, Vols. 381-382, pp. 211-214, 2008