WATER INJECTION DISCHARGE METHOD OF BALLAST TANK OF SHIP

摘要

PROBLEM TO BE SOLVED: To omit wiring of plural independent signal conductors, and facilitate wiring work by providing a communication wire to connect plural signal collecting delivering means to each other. ;SOLUTION: A solenoid valve control signal of 'valve opening' is sent to second signal collecting delivering means 24 from an opening switch through a switch signal conductor 25a. Second signal collecting delivering means 24a which receives this adds a sender number to a signal of 'valve opening', and edits it as communication data. The edited communication data is sent through two-core communication wire 23 by the second signal collecting delivering means 24a. Next, first signal collecting delivering means 20a connected to the communication wire 23 judges whether or not one' own station number added to the communication data and the sender number set in the first signal collecting delivering means 20a are equal to each other.;COPYRIGHT: (C)1998,JPO