Ship weighing system and ship weighing method

A ship weighing system, comprising:

• a collection module, and
• a computing server communicated with the collection module;
• wherein the collection module is configured to synchronously collect and report water level measurement values of a plurality of positions on a ship, trim angle measurement values of the plurality of positions, and trim angle angular velocity measurement values of the plurality of positions;
• the computing server is configured to send a synchronization command and a data collection command to the collection module, receive and process data reported by the collection module, and calculate a displacement volume of the ship;
• the data at least comprises the water level measurement values of the plurality of positions on the ship, the trim angle measurement values of the plurality of positions, and the trim angle angular velocity measurement values of the plurality of positions;
• wherein a ship size database, an installation correction database, a clock synchronization module, a collection command module, a measurement data pre-processing module, and a calculation module are installed in the computing server;
• wherein the ship size database is configured to pre-store ship size data;
• wherein the installation correction database is configured to store measurement offset values generated by the collection module during an installing process;
• wherein the clock synchronization module is configured to send a synchronization command to perform time synchronization on the collection module;
• wherein the collection command module is configured to send a data collection command to the collection module according to an operation of a user;
• the data collection command comprises a collection start time point, an amount of the data collected, and a predetermined fixed interval value of collection time points of two adjacent data during a collection process;
• wherein the measurement data pre-processing module is configured to perform installation correction and integration of the data to generate a real-time dynamic measurement data table according to the water level measurement values, the trim angle measurement values, and the trim angle angular velocity measurement values reported by the collection module and the measurement offset values stored in the installation correction database;
• the measurement data pre-processing module is configured to complete data tailoring of a complete trim motion period according to change characteristics of the data of the real-time dynamic measurement data table over time;
• and the measurement data pre-processing module is further configured to calculate and generate an expected equilibrium state measurement array;
• wherein the calculation module is configured to calculate the displacement volume of the ship and obtain a weight of the ship according to the expected equilibrium state measurement array and the ship size data stored in the ship size database;
• wherein the collection module comprises two water level measuring nodes and angle measuring nodes;
• the two water level measuring nodes are respectively arranged on a port side of a stern of the ship and a starboard side of the stern;
• the two water level measuring nodes are symmetrically arranged with respect to a middle longitudinal section of the ship;
• the angle measuring nodes comprises two front angle measuring nodes, two middle angle measuring nodes, and two rear angle measuring nodes;
• the two front angle measuring nodes are respectively arranged on the port side of the ship and the starboard side of the ship and are corresponding to a front portion of the ship;
• the two middle angle measuring nodes are respectively arranged on the port side of the ship and the starboard side of the ship and are corresponding to a middle portion of the ship;
• the two rear angle measuring nodes are respectively arranged on the port side of the ship and the starboard side of the ship and are corresponding to a rear portion of the ship;
• wherein each of the water level measuring nodes is configured to collect and report a height difference between each of the water level measuring nodes and a horizontal plane at a corresponding side of the stern according to the data collection command sent by the computing server;
• the angle measuring nodes are configured to collect and report a trim angle measurement value and a trim angle angular velocity measurement value of each of the angle measuring nodes at a corresponding installation position according to the data collection command sent by the computing server.