Highspeed Train Running Safety Monitoring Technology

With the increase of train operation speed,running safety monitoring technology of high speed train has gradually become more important.From the design,application,maintenamce and other aspects,this article introduces high speed EMV's safety guarantee system,which adopts the following techniques: onboard safety technology with reliability,redundancy design and diagnostic technology;infomation technology of EMU's longdistance wireless transmission system with GPRS;ground database tecchnology of database diagnostic and expert system;comprehensive fault maintenance safety guarantee techology. This article takes for example CRH3 EMU,introduces the structure of CRH3's running safety monitoring system and proposes research objectives and development trend.