Continuous rolling and transmission monitoring system based on PLC (Programmable Logic Controller) and monitoring method of continuous rolling and transmission monitoring system

Abstract

The invention discloses a continuous rolling and transmission monitoring system based on a PLC (Programmable Logic Controller) and a monitoring method of the continuous rolling and transmission monitoring system. The continuous rolling and transmission monitoring system comprises an upper monitoring unit, a middle network unit and a plurality of in-situ monitoring units, wherein the upper monitoring unit is communicated with the middle network unit through a second communication module; the middle network unit is communicated with the in-situ monitoring units through a first communication bus. The invention discloses the continuous rolling and transmission monitoring system based on the PLC and the monitoring method of the continuous rolling and transmission monitoring system; according to set control parameters and set operation parameters, a working state of a steel rolling set is controlled by controlling a transmission device through the PLC; working state data of the steel rolling set can be transmitted to an operator station in the upper monitoring unit through a network. A control system and the monitoring system are of a three-stage network structure. data communication between each two network structures is realized through a switch, and layered flowing of monitoring information streams can be conveniently realized; the continuous rolling and transmission monitoring system and the monitoring method, provided by the invention, are suitable for meeting control requirements of different types of management.

Description

technical field [0001] The invention relates to the technical field of steel rolling in steel mills, in particular to a PLC-based continuous rolling transmission monitoring system and a monitoring method thereof. Background technique [0002] Rolled steel products play a pivotal role in all walks of life in modernization, including housing, petrochemical, electromechanical, automobile and other industries are inseparable from rolled steel products. The main production process of contemporary steel rolling technology is different from the old ones in the past, and the products are directly rolled into shape. In the past, the control method was manual analog quantity control, and the controller adjusted the input speed setting of the speed control device; if the system detects that the device is in a fault state, it will stop directly, and the operator and maintenance personnel cannot query the fault information; the transmission device and The communication between the conso...

AI Technical Summary

Problems solved by technology

Application number: 201310669221.3 patent for invention, which discloses a PLC control system, including a remote I / O module and a PLC master module. The remote I / O module is a VersaMax remote I / O module. Under the premise that the original Genius remote I / O module is replaced with the new VersaMax remote I / O module, the GeniusBus communication method is mainly used to exchange data with the GE90-30PLC module to realize mutual communication with each other. This control system can not only reduce The number of CPU control modules used in the main station PLC module also greatly saves the use of control cables, reduces costs and manual maintenance, makes up for the defects of the old generation of remote I / O modules that are not produced, and facilitates the unification of spare parts Ordering and replacement, but the main purpose of the invention is to reduce the number of equipment and cables used, thereby achieving the purpose of reducing costs and labor maintenance. There is no improvement for the control system and monitoring method of the rolling and continuous rolling transmission system; the application number is: The utility model patent of 201320111098.9 discloses an electrical monitoring system for the main electrical room of a rolling mill, including a programmable controller for the machine unit, a programmable controller for the vertical roller, a programmable controller for the oil depot, a programmable controller for the hydraulic station, and a programmable controller for bearing pad monitoring The switches are respectively connected to the switch, and the output of the switch is connected to the computer in the main control room. This utility model adopts the network technology based on Profibus and the Internet to implement networking with each programmable controller PLC. It is fast and effective, easy to operate, safe, environmentally friendly, The feature of wide application can play the role of analyzing the hidden dangers of the equipment according to the historical trend and troubleshooting the fault point, and this utility model can dynamically understand the equipment information and the state of the equipment chain signal, analyze the hidden dangers of the equipment, solve the equipment failure in time, reduce During unplanned shutdowns, production runs smoothly and energy is saved. However, this utility model only realizes field-level monitoring, and does not realize the integrated monitoring of the entire system, and the operating data of the system is not uploaded to the server for safe and reliable storage.

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