High-speed train bearing safety state real-time monitoring system

A high-speed train bearing safety state real-time monitoring system comprises a signal acquisition module, the signal acquisition module comprises an acceleration sensor used for acquiring bearing vibration signals, and the signal acquisition module further comprises a transmitting device electrically connected with the acceleration sensor and used for transmitting detected original vibration signals to the rapid diagnosis module, the damage degree judgment module and the fault type judgment module in a wired or wireless mode; and the rapid diagnosis module rapidly judges whether the bearing has a fault or not according to a probability density parameter of a vibration signal amplitude, wherein the probability density parameter is a product of a 3 sigma distribution width of a probability density function amplitude and a probability density function peak value. The system not only can prevent disastrous accidents caused by sudden faults and guarantee normal operation of the train, but also can prevent gradual