Video inspection

Purpose

The systems of the SVOD project produced by TVEMA perform monitoring the condition of the railway infrastructure facilities in an automated mode and combine the methods of visual recognition and laser triangulation. One of the main components of these systems are high-speed linear cameras, which make possible to shoot at a high resolution of 1 mm/px at speeds up to 400 km/h.

Specially designed illumination system ensures the preservation of a clear and contrast image at any weather conditions and at any time of the day. Powerful data recording and analysis system provides image compression without loss of quality in real time, increasing the autonomous time of work passes without archiving data up to 10000 km. The principle of operation of these systems is based on the visual detection of surface flaws of the rail using a linear video camera. The illumination system highlights the running surface of rail. The rays of light reflected from rails pass through the body glass, the lens of the video camera and hit the matrix. The resulting image is digitized and transmitted via a high-speed interface to the server, where data is recorded for later decryption.

SVOD makes it possible to monitor 64 identified flaws, including cracks, rail sagging, condition of track bonds, bridge plates and bolts,  rail shelling, damage to welded joints, presence of ladder treads in the joints and stagger of rail joints, damage to the sleepers, etc., in real time and post-processing modes.

SVOD makes it possible to shoot all elements of the track structure within the assembled rails and sleepers.

Advantages

- Compact design, which makes possible to install equipment on the car bogie of any rolling unit.

- Monitoring the track for several parameters simultaneously.

- Operation at any season of the year in the temperature range from -50 °C to + 45 °C.

- Early identification of places where a movement safety hazard may arise due to a damaged or missing element of track structure.

Scope of application

Network of railways and subways of the Russian Federation and foreign countries.