Pipe distribution method for measuring outboard atmospheric pressure through differential pressure sensor in marine ventilation system

The invention discloses a pipe distribution method for measuring atmospheric pressure outside a cabin by a differential pressure sensor in a marine ventilation system, which comprises the following steps of: welding a steel bracket of a measuring pipe on a cabin wall, penetrating the measuring pipe through the cabin wall, fixing the measuring pipe through a pipe clamp and a screw, horizontally arranging the measuring pipe after the measuring pipe penetrates through the cabin, and when the measuring pipe is arranged below a windshield, fixing the measuring pipe through the pipe clamp and the screw. The measuring tube is vertically upward, a port tube section is in a gooseneck bend, a tube opening is arranged downwards, the windshield is welded to a bulkhead, the windshield is provided with a front face and two side faces, small holes are evenly formed in the two side faces of the windshield, the two side faces with the small holes are perpendicular to the head and tail direction of a ship, and the positions an