PLC控制的自动装车系统设计

摘要

to the characteristics of the existing coal loading systems,automation proposed reform program. With S7-200 series PLC and PC,to achieve automatic control of the entire loading process. Through the PC,and PLC,PC and PC-machine and industrial communication with ifeld instrumentation to achieve PC loading system on the PLC real-time control. Through the analysis of the entire loading process,with the Ladder written communication module,data conversion,adding coal,a status code of the transmission process and the loading accuracy control procedures. Labs Simulation results show that loading system of the design can meet the technical index requirements,can be as accurate as real-time tests and accuracy of loadingsystem. The Function and have accuracy,searching so,solve the discharge,transmission,load and other aspects of the problem. Practice has proved that:loading process efifciency and automation have reached the higher loading was achieved on Automatic Control. The rapid development of the ifeld of automatic control for coal,electricity, telecommunications and other industries has brought great economic beneifts.%根据现有煤矿装车系统的特点，提出自动化改造方案。采用S7-200系列PLC和PC机实现对整个装车过程的自动控制。通过PC机与PLC、PC机与工控以及PC机与现场仪表的通信实现PC对PLC装车系统的实时控制。通过对整个装车流程的分析，用梯形图程序编写了通信模块、数据转换、加煤过程、状态代码传送过程以及装车精度控制等程序。实验室的仿真结果证明了此装车系统的设计可以达到提出的技术指标要求，能够可靠、准确地实时监测和记录装车过程中的运行状况，并具有记录、查询等功能，解决了放料、传输、装载等环节的问题。实践证明：装车过程的效率和自动化程度都达到了提高，成功实现了对装车系统的自动控制。自动化控制领域的飞速发展给煤碳、电力、通信等行业带来了很大的经济效益。