Hot backup method of VTS multi-sensor information comprehensive processing system

Abstract

The invention discloses a hot backup method of a VTS multi-sensor information comprehensive processing system. The method comprises the following steps: step one, synchronizing clock; step two, establishing an information corresponding table; step three, establishing a chained topology list; step four, determining a working machine; step five, synchronizing data; step six, switching fault; and step seven, after the equipment fault is recovered, repeating steps three to six, establishing a new chained topology list, and repeatedly and circularly executing to realize automatic monitoring switching of a backup machine. The hot backup of the multi-sensor information comprehensive server is realized, and a reliability requirement on a heartbeat link by the hot backup, the flexibility and uniqueness of the automatic switching of the working machine and the backup machine are comprehensively considered, a closed-loop synchronization mechanism is designed according to a data integrity requirement on the VTS multi-sensor information comprehensive processing, and the high reliability and stability of a VTS system are well guaranteed by adopting a way of taking starting time as unique arbitration decision for the working machine.

Description

technical field [0001] The invention relates to a ship traffic management system, in particular to a hot backup method of a VTS multi-sensor information comprehensive processing system. Background technique [0002] In the VTS system (Vessel Traffic Management System), the multi-sensor information integrated processing system is at the core. The information is sent to the traffic display and processing subsystem, and the VTS supervisor can dynamically track and supervise the ship, grasp the ship's navigation situation, and communicate with the ship through the VHF wireless phone to implement traffic management and organization. Therefore, it is particularly important to realize the hot backup of the VTS multi-sensor information comprehensive processing system and ensure the high reliability and data integrity of the VTS system in order to meet the business needs of relevant maritime departments. [0003] The common dual-machine or multi-machine hot standby method is to elec...

AI Technical Summary

Problems solved by technology

[0004] 1. Unnecessary active / standby switching and dual-machine hidden dangers will occur

For example, when the working machine with high priority fails intermittently, one of the backup machines switches to the working machine. Switching will result in inconsistent data status and affect the use of the system

[0005] 2. Most of the traditional working machines and backup machines pass heartbeat information periodically to obtain the survival status of other devices. When the network card of the heartbeat line is loose or damaged, the backup machine will automatically switch to the working machine state forcibly, but the actual work The machine is not down, so there is a dual-master situation, that is, the situation of two working machines at the same time

[0006] 3. In the traditional hot backup method, data synchronization mostly adopts periodic data synchronization. It is difficult to ensure time synchronization between the master and backup, and some data will be lost during the conversion process. This method has very high requirements for data integrity. VTS system regulation no longer applicable

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