An X-ray machine is provided. The X-ray machine comprises an X-ray tube; an X-ray detector placed opposite the X-ray tube in a direction of emission of X-rays; and a mobile device on which the X-ray tube and the X-ray detector are mounted, the mobile device comprising a motor capable of causing the automatic movement of the X-ray machine, and an impact-sensing system coupled to the motor in order to control the movement of the mobile device in the event of an impact applied to the X-ray apparatus.