An optical structured light method and an opto-electronic system for automatic noncontact distant measurements of wear and defect detection for a contact wire electro-supply network are presented. The industrial prototype of the system can extract the main technological wire parameters: the remaining height with the rms error down to 0.15 mm and the wire cross-section area with a rms error of 1.5 mm2. This information is sufficient for confident decision making as to safe operation of the contact wire electro-supply network. This method could be applied for automatic wire wear measurement and defect detection for trams, trolleybuses and other electro-supply vehicles.

An optical structured illumination of 3D object as a light band method for automatic noncontact wear measurement and defects detection of a contact wire network is presented. The experimental device can extract main technological wire parameters like remaining height with RMS value down to 0.15 mm. Also the cross-sectional area of the wire can be measured with RMS area noise value of 1.5 mm 2 , which is sufficient for a confident decision-making related to the automatic wire wears and defects on railways, tram and trolleybus lines, and similar systems of vehicles electro-supply.

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Advanced automated optoelectronic system for contact wire wear inspection on the go using a structured light method is presented. The algorithm of the video stream analysis and approaches to its implementation using high-performance electronic equipment are given. The automated system described has allowed measuring wear parameters with 10 mm interval at the inspection wagon velocity of 60 km per hour. The root-mean-square error for the measurements of the remaining height and contact plot constitutes 0.15 and 1.5 mm2 correspondently that allows one to make a considered decision about changing a worn section of a contact wire network. The system also can be utilized to inspect public transportation network and to measure the geometric parameters of cables and tubes being fabricated with rolling technique.

As it is known the mining of oil and gas offshore is carried out using the drilling platforms, which are extremely massive and inert. In order to avoid excessive stresses on platform, which is highly inertial object, it consists of few large parts (normally base and legs). Four friction pendulum bearings are used for mechanical link between the base and legs. The bearings functionality is to provide the protection of the platform from all possible mechanical loadings on the legs that might affect the base with the drill and other sensitive equipment. Mechanical loadings include different seismic movements, ice shifts, mechanical loadings during the drilling, heat expansion stress, etc. Bearings are worn out after certain distance traveled and have to be replaced when the movement resource is over.The most important parameter, which allows estimation the bearing resource, is measuring the cumulative distance traveled by the bearing from the beginning of its service with the relative accuracy better then 0,01%, and absolute displacement at ±350 mm range with accuracy better then 1 mm. For this purpose the automatic optical-electronic system for measurements of bearings movements was developed. Its main aim is continuous noncontact measurement of the bearing location and calculation of the total distance traveled by the bearing for any defined time period.Measuring principle of the system is based on optical image processing. The passive part of the system (optical target) is fixed on one part of construction while active part -a field measurement sensor (FMS) is installed on another part of construction that moves relative to the first one. The FMS continuously captures and processes the image of optical target. On the FMS output, after processing, the relative displacement between FMS and Optical Target is obtained with high degree of accuracy.The system was certified as a measuring tool as well as for the use in explosive environments (for gas and oil industry). It is designed for continuous 24-hours operation during 30 years.