Real-time Systems Based On Virtual Machine Platforms The Design And Realization

Modern continuous casting product in the world is being continuously improved on its automatization and the quality of steel to get higher benefit. For this reason, many advanced technologies are used. One of them is a ladle slag detection system. The aim is to obtain maximum yield form each ladle at minimum transfer of slag from ladle to tundish. Recently the first novel slag detection system developed in China has been completed in Hangzhou steel company with successful results. It includes a detection instrument with high gain, strong anti-interference and a sensor working at about 1400, and a computer monitor system to enhance its function as well. According to the object-oriented design methods, a real-time data processing system is proposed and realized by means of a personal computer (PC) with a data acquisition board (DAQ). The general idea is based on a virtual machine using .NET technology. Via an interface circuit the slag detection system and the PC with such a software system constitute a more powerful one. That can implement the real-time data processing functions for slag detection of continuous casting ladle with real-time display, storage, inquiry, and print of the slag signal obtained at the end of pouring of each ladle. At the same time, the display acts as a monitor to image the operation of the whole system. The new system has been tested on the continuous caster with 100t ladles and prospective results are obtained.The industrial background of the slag detection system and the general idea of the real-time system based on virtual machines are introduced firstly in this chapter. And then the intelligent garbage collection (GC) is given, which is extracted form the design of the real-time system. The general design, function modules and key algorithms of the software are described in Chapter 4. As a result, the typical curves recorded in on-line tests are given in the Summery.