TY JOUR TI Analysis of Devices for Autonomous Continuous Monitoring, Alerting and Elimination of Dangerous Gas Levels in Battery Rooms KW Gas analyzers KW hydrogen batteries KW battery rooms KW traction substations KW continuous monitoring KW digital railroad KW automation KW safety JO Proceedings of Petersburg Transport University AU Agunov, A.V. AU Terehin, I.A. AU Fesak, D.I. AU Abishov, E.G. AU Baranov, I.A. PY 2023 IS 20 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"