Unstability and stability monitoring device and system

The utility model discloses an instability stability monitoring device and system, and relates to the technical field of stable state detection of vehicles. The instability stability monitoring device comprises an instability stability monitoring unit, a communication unit and a power supply unit, the instability stability monitoring unit can carry out data processing on vibration signals, vibration characteristic data and vehicle instability stability state diagnosis information are generated, and the vibration characteristic data, the vehicle instability stability state diagnosis information and original vibration data corresponding to the vibration signals are sent to the communication unit. And sending to the vehicle system through the communication unit. Visibly, the vibration signals of the plurality of output ends of the detection equipment for monitoring the unstable stable state of the bogie and the vehicle body of the vehicle are uniformly and synchronously sent to the unstable stable monitoring uni