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Research on Safety Control Strategy of Ship Monitoring System Based On Information Flow Control between Heterogeneous Networks

In the design of ship monitoring system, it is usually necessary to set aside the test interface. How to ensure the general nature of the test interface and the security of the monitoring system is the problem of system design. Firstly, the central control system of a certain type of ship propulsion system and the communication protocol of monitoring system are analyzed. And then a data conversion system based on heterogeneous networks is designed and implemented. The test interface of the data conversion system is developed based on Ethernet protocol, the data conversion between the 1553B bus and Ethernet network is achieved. A safety control strategy of ship monitoring system based on information flow control between heterogeneous networks is proposed. The data conversion between 1553B bus and Ethernet network is monitored and analyzed. If the data flow is not defined as the predefined format, the conversion between heterogeneous networks can be cut off automatically, which can ensure the safety of the monitoring system.