基于PLC对邮件分拣系统的控制

基于PLC对邮件分拣系统的控制

摘要

最初的分拣系统是完全基于人力的作业系统．通过人工搜索、搬运来完成货物的提取。这种分拣系统的作业效率低下，无法满足现代化物流配送对速度和准确性的高要求。随着科学技术的飞速发展，分拣系统中开始运用各种各样的自动化机械设备．计算机控制技术和信息技术成为信息传递和处理的重要手段。机械化、自动化、智能化成为现代分拣系统的主要特点与发展趋势。

随着计算机技术的飞速发展，可编程控制器应运而生。并且功能也越来越强大。在应用上，PLC有着其他设备无以比拟的优越性，它可靠性高，抗干扰能力高；适用性强，应用灵活；编程方便，易于使用；功能强大，扩展能力强；控制系统设计、安装、调试方便；维修方便，维修工作量少；体积小，质量轻，易于实现机电一体化。邮件分拣作业是邮件配送中的一个关键环节，它指的是依据邮件的地址．迅速、准确地将发往不同地点的邮件从众多邮件中按邮政编码分拣出来，并准确、及时地运送到邮件的目的地。

本文介绍了用PLC控制技术实现的邮件分检系统。分析了邮件处理自动化的实现方法和工艺流程，对设计邮件自动化设备有一定的参考价值。利用PLC内部的指令实现邮件系统的处理技术，无需硬件的额外投资即可明显提高邮件分拣效率。

关键词：西门子S7-200PLC BCD拔码器邮件分局

Mail sorting system based on PLC control

Abstract

The initial sorting system is based entirely on human operating system. Through manualsearches, handling to complete the extraction of goods. The sorting system operatingefficiency, can not meet the modern logistics distribution on the speed and accuracy of high demand. With the rapid development of science and technology, sorting system began using a variety of automated machinery and equipment. The computer control technology and information technology has become an important means of information transmission and processing. Mechanization, automation, intelligent modern sorting system main characteristic and development trend.

With the rapid development of computer technology, the programmable controller to emerge as the times require. And the function is more and more powerful. In the application of, PLC with other equipment unparalleled superiority, it has high reliability, high anti-interference ability; strong applicability, flexible application; programming convenient, easy to use; powerful, scalable; control system design, installation, convenient debugging; repair repair convenient, less workload; has the advantages of small volume, light weight, and is easy to realize the integration of mechanical and electrical. Mail sorting mail distribution is a key link in the basis, it refers to the mail address. Quickly, accurately sent to different locations of the messages from the other mail by postal code sorting out, and accurate, timely delivery of the message destination.

This paper introduces the use of PLC control technology to realize the mail sorting system. Analysis of the mail processing automation to realize the method and the process of design, mail automation equipment has a certain reference value. Using the PLC internal instruction realizing mail processing technology, without the need for additional investment can obviously improve the hardware of mail sorting efficiency.

Key words: Siemens S7-200PLC BCD code dialing device mail Branch Bureau