The Research And Design Of Emergency Lighting Monitoring System

With the rapid development of social and computer technology, emergency lighting monitoring system has been monitoring system research from the separate power of traditional emergency lighting system. Centralized emergency lighting monitoring system is relatively more complex and intelligent, so how to research and design more convenient and efficient emergency lighting monitoring system is an urgent problem. In addition, a wide range of applications of embedded system and the proposing of IEC61850communication standard provide a new theoretical and technical support for the research of emergency lighting monitoring system.The subject comes from the actual project development, based on IEC61850communication standard and traditional485serial communication, combined with the graphical interface development tool Qt/E which is commonly used in embedded devices, research and implement a set of emergency lighting monitoring system. The system can control the system operation mode by touch operation and monitoring the real-time status of system and displayed on the graphical interface. Finally, proposes a priority-based on485serial communication scheduling strategy, design and implement a monitoring subsystem based on485serial communication. The main work of this article include:(1) Accomplish the overall design of monitoring system based on the analysis of system logic functions. Research the related technical background of the development of system. Build the system development platform. Build the cross-compiler environment.(2) Proposes the IEC61850communication data model, and gives the logical nodes and data object model of monitoring system. Analysis the IEC61850communication mode of the transmission, XML.(3) Accomplish a priority-based on485serial communication scheduling strategy for the problem of485communication efficiency. And, accomplish the simulation for sorting algorithm.(4) Design and implement the emergency lighting monitoring subsystem, Focused on solving the Qt GUI software implementation, the implementation of485serial communication and the problem of storing and scheduling of SQLite database.After simulation algorithms, the scheduling policy based on communication can reduce the485communication time, improve the communication efficiency, and verify that this method is feasible. For monitoring subsystem, in actual project, we carried out system debugging, found that the system is normal. The main functions can be realized such as display and communication. Basically complete the design goals. And it also has practical value.