Flexible anti-collision warning device for bridge area

The invention discloses a flexible anti-collision warning device for a bridge area, and the device comprises a flexible anti-collision device which is disposed at the intersection of each bridge pier column and a water surface; an alarm device which is fixed at the geometric center between the pier columns; a magnetic sensor which is used for detecting a magnetic field carried by the ship so as to determine the real-time position of the ship and sending out the real-time position information; a data acquisition and processing module which is used for receiving the real-time position information, carrying out inherent error correction and conversion processing on the real-time position information and then outputting magnetic field data. The magnetic field data is only a warning signal or is a warning signal and a defense signal at the same time; the alarm device receives the warning signal and then gives an alarm. And the flexible anti-collision device makes a defense action after receiving the defense signal