Bridge informatization anti-collision method and system based on block chain

The invention discloses a bridge informatization anti-collision method based on a block chain. The method comprises the following steps: establishing a uniform identity code for a bridge added into the block chain in advance; a bridge block chain Chain1, a ship block chain Chain2 and a bridge ship passing information block chain Chain3 are constructed; the method comprises the following steps: acquiring an identity code of a ship driving into a monitoring field, sensing real-time information of the ship, writing the real-time information of the ship, the acquired ship information and bridge information into a bridge ship passing information block chain Chain3, and signing the written information through a private key corresponding to a pre-acquired bridge identity code; and comparing the sensed real-time information of the ship with the corresponding bridge information, judging whether the ship has a collision risk or not, if so, sending a collision warning to the corresponding ship, and if the collision stil