TY JOUR TI Health monitoring of mechanical force in cables of overhead catenary KW technical diagnostics KW monitoring KW power supply KW collector KW catenary system KW wireless data transmitting KW radio channel KW pre-failure state JO Transport automation research AU Nasonov, G.F. AU Chernogorov, Y.A. AU Medvedev, M.E. AU Osadtchy, G.V. AU Sedykh, D.V. AU Pristensky, D.N. AU Ivanov, V.L. AU Efanov, D.V. PY 2016 IS 2 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"