The invention relates to a self-adaptive telescopic footboard device for a
train platform. The self-adaptive telescopic footboard comprises an installation support which is horizontally and fixedly installed in the platform. An opening is formed in the side, close to a compartment, of the installation support. A telescopic footboard is linked in the opening through a driving
assembly. The two sides of the installation support are each provided with at least one high-precision
laser ranging sensor. The
laser ranging sensors are in communication connection with a
signal controller installed inside the device. The
signal controller can obtain opening and closing signals from the platform or a shielding door or an independent controller, and when a
train draws up at a
station,
laser ranging is conducted, the footboard stretches out automatically after the
train is stopped completely; and when the train leaves the
station,
laser ranging is stopped, and the footboard retracts automatically. The self-adaptive telescopic footboard device for the train platform is reasonable in design, safe and reliable; multi-point
laser ranging is adopted, measurement values are compared automatically, and the stretching-out length of the footboard is controlled automatically by means of an interface circuit through a
servo driver so that the footboard device can adapt to different gap dimensions between existing platforms and trains, the safety of passengers when the passengers take on and take off the trains can be effectively guaranteed, and
scratching between the footboard and the compartment can be prevented; and the trains can operate efficiently, safely and automatically.