Optimized Design for Supervisory Control Platform of Unified Time System of Survey Vessels

摘要

This thesis briefly introduces the role of the supervisory control platform of unified time system of survey vessels, and studies thoroughly the design and composition of the supervisory control platform, and then finds out the existing defects for which the cause is that to avoid the interplay between two threads: buffer and packet transmission, when the protection lock for Trap message queue is null, the abnormal access of the pointer occurs, leading to the shutdown of Trap message transmission thread and the SNMP thread, and the monitoring module's failure to respond to the requests from software. This paper elaborates the optimized and improved design for the supervisory control platform. By changing signal variable, the optimization of the system platform, especially the revising of the defects could be accomplished. And, by actual use, the feasibility of optimization and improvement is verified, therefore, the reliability of supervisory control platform of unified time system is enhanced, and it could provide reliable monitoring guarantee for the stable operation of the system. This design has high application value, and could be widely used.