Remote Monitoring System For Ships Based On Embedded Linux

In recent years, with the development of shipping industry that tends to be digital, intelligent and networked, Higher requirement of remote monitoring technology for sailing ships has been proposed by shipping company to optimize logistics management, improve operational efficiency and to master ship navigation information, especially to avoid ship in distress.With the rapid development of Internet technology and the increasingly mature embedded technology, Remote monitoring system based on embedded technology has become a hot research topic. This paper proposes a new remote monitoring system architecture after investigating the current development of remote monitoring systems for ships. The terminal control system that consists of AIS(Automatic Identification System) and SSAS(Ship Security Alarm System) combines the embedded technology and satellite communication technology. It adopts embedded system design based on ARM9 and Linux to realize remote monitoring system from ship to land.To start with, this paper analyzes the development and status quo of the remote monitoring system for ships, proposes it is an inevitable trend to develop remote monitoring system for ships based on embedded technology, and discusses what this paper wants to achieve. Afterwards, the INMARSAT system and Linux kernel, including the mechanism for implementation of Linux key technology are researched emphatically. Because of demanding for the realization of system, the Bootloader and Linux kernel are ported. Thus the system's hardware and software platforms are structured. On the basis of this, the supervisory control and data acquisition system for ships based on embedded Linux is designed and realized. This system that based on modular software design has strong expansibility and portability. It includes the bottom serial communication module, data acquisition module, transmitter and receiver module, ships LAN network communication module and so on. Finally, the whole system software is integrated. At the same time, by taking into account the security of the system, this paper gives the system's security solutions, including security CGI programming and the establishment of the packet filter firewall.In unattended environment, the system can automatically, rapidly and reliably respond to requests from ship to land. It high efficiently realizes real-timely remote supervisory control and data acquisition from ship to land. This design scheme will adequately safeguard the ships navigation security and improve the level of ship automation and modern management.