Abstract: This article analyzes the differences between Internet based process control and traditional computer control, and provides a recommended solution for designing an Internet based remote process control system by adding a special network control layer on the basis of existing computer control systems.

1. Introduction

As the foundation of production process automation, the IS410SRLYS2A IS400SRLYS2ABB process control system has evolved from on-site control using base type instruments to centralized control using unit combination instruments. With the emergence of computers and the continuous improvement of the performance/price ratio of microcomputers, Distributed Control Systems (DCS) have gradually become the mainstream of process control systems. In recent years, with the introduction of intelligent instruments and fieldbus technology, the computer-centered feature of control systems has become increasingly apparent.

After decades of development, the internet has spread all over the world. People from different countries and regions can work together through the internet, which has great potential in high-level industrial process control. Internet based remote process control allows users to remotely monitor and adjust industrial processes, and can also change with market changes.

The emergence of visual XML technology and Java, a programming language that can be programmed online, has made internet-based process control development possible. Nowadays, network-based process control systems, such as Sun Microsystems, Cybernix, Foxboro, and Valmen, are all developed in Java. Intuitive technology provides Web@aGlance A graphical platform for providing real-time data feedback to Java. In addition, the Invensys PLC developed by the Department of Energy Science at the University of Oxford has made it possible to develop web-based instruments and development tools.

At present, most of the research on Internet based process control in IS410SRLYS2A and IS400SRLYS2ABB has achieved great results in argumentation, but there is relatively little work done in system development and design methods. However, the design methods of computer-based control systems often fail to consider factors such as information flow, network interfaces, and network security in the network environment, and cannot be directly “ported” to internet-based remote process control systems. Moreover, internet-based remote process control systems do not have fixed users, so the system must provide services to all users during design.