Shield tunnel segment dislocation deformation automatic monitoring and early warning device, system and method

The invention discloses a shield tunnel segment dislocation deformation automatic monitoring and early warning device, system and method. The device comprises a telescopic fixing rod, a tilt angle sensor, a first controller and a first alarm. The tilt angle sensor is horizontally fixed on the telescopic fixing rod, and the tilt angle sensor and the first alarm are electrically connected with the first controller; the telescopic fixing rod is used for being horizontally fixed to longitudinal connecting bolts of two longitudinally adjacent shield segments. The tilt angle sensor is used for collecting the tilt angle value of the telescopic fixing rod and transmitting the tilt angle value to the first controller. The first controller is used for receiving the tilt angle value, when the tilt angle value exceeds a preset early warning value, the first controller sends an alarm signal to the first alarm, and the first alarm is used for receiving the alarm signal and giving an alarm. The dislocation condition of the