舰船导航系统CAN总线网络设计的关键技术

Key Technology in Design of CAN Bus Network in Ship Navigation System

针对舰船传统导航系统中通讯方式的不足,提出了基于CAN总线的导航系统网络化方案,进行了双冗余CAN网络结构的设计。该方案中,综合导航显控台、各导航传感器及导航设备均挂接在CAN网络上,利用CAN总线这个开放统一的接口可以很好地实现各导航设备与舰船上其它系统的信息共享,从而提高了整个导航系统的自动化与可靠性。MATLAB仿真试验表明,基于CAN总线的导航系统网络化方案是可行的。

Facing the shortages of the communication methods in the traditional ship navigation system, a network method based on CAN bus is put forward and the structure of double redundancy CAN network is designed in this paper. The traditional navigation systems all perform the communications between the control and display computer of integrated navigation and kinds of navigation sensors with a serial ports way, which already can＇t meet the demands of the data transmission for the shortages of itself. After the network method was put poward, it meets the needs of development of the system. In this method, the control and display computer of integrated navigation, all kinds of sensors as well as other navigation equipments are all connected to the CAN bus, which could accomplish the share of information with all the other systems on the ship that are directly or indirectly connected to the open CAN bus. Therefore, the automation and reliability of the whole navigation system will be improved remarkably. Finally, to some extent, MATLAB simulation indicates that the availability of the network method based on CAN bus in ship navigation system is approved.