摘要 Abstract 1绪论1 1.1课题研究的背景资料1 1.2自动药片灌瓶机现状1 1.3本次设计的内容及目的2 1.3.1本次设计的内容2 1.3.2本次设计的目的2 1.4系统控制的选择比较3 1.5 PLC定义及简述4 1.6 PLC的基本结构组成4 1.7 PLC的发展趋势分析6 2控制系统硬件的设计7 2.1药片灌瓶机控制系统控制的要求7 2.2药片灌瓶机控制的系统组成7 2.3硬件选型8 2.3.1 PLC选型8 2.3.2限位开关的选型10 2.3.3光电传感器11 2.4本次系统设计的主要硬件清单12 3药片灌瓶机控制系统PLC程序的编写12 3.1药片灌瓶机的控制简述12 3.2绘制控制流程图13 3.3配置I/O表14 3.4接线图15 3.5程序编写17 3.5.1梯形图绘制17 3.5.2语句表25 4程序仿真29 4.1环境要求29 4.2程序调式29 致谢33 参考文献34 摘要 目前在医药行业，药片的种类和数量类别不同差别十分巨大，目前存在的药片大多是胶囊和片状结构，在对药片的包装过程中，往往要对药片进行定量的包装，主要有瓶装和盒装两种方式。由于医疗制药行业要求比较严格，对药片的过程性控制比较强，早些传统的人工分装的形式不可避免的造成二次污染，不仅不卫生极有可能对患者造成二次伤害。所以本次设计通过自动控制理论设计一种自动的药片灌瓶机的系统，具有十分重要的意义。 本次设计采用西门子S7-200小型PLC作为主要的控制元件，通过置位复位和起保停电路、顺序控制的方式对程序进行编程，设计了一种药片灌瓶机的PLC控制系统。通过对硬件和软件的设计，满足现今控制行业药片灌瓶的使用要求。最后对程序进行模拟调试，在不断的调试和修改过程中，使程序更加完美，达到最佳的工作状态。 关键词：药片灌瓶机控制系统可编程序逻辑控制器药片分装系统 Abstract At prese
nt, i
n the pharmaceutical i
ndustry, the types a
nd qua
ntities of tablets vary greatly. Most of the tablets that exist today are capsules a
nd sheet structures. I
n the process of packagi
ng tablets, tablets are ofte
n packaged qua
ntitatively. There are mai
nly two ways of bottli
ng a
nd boxed. Due to the strict requireme
nts of the medical a
nd pharmaceutical i
ndustry, the process-orie
nted co
ntrol of tablets is relatively stro
ng, a
nd the form of the earlier traditio
nal artificial separatio
n i
nevitably causes seco
ndary pollutio
n, which is
not o
nly u
nhygie
nic but also likely to cause seco
ndary harm to patie
nts. Therefore, the desig
n of this automatic co
ntrol theory to desig
n a
n automatic pill bottle machi
ne system, has very importa
nt sig
nifica
nce. This desig
n uses Sieme
ns s7-200 small PLC as the mai
n co
ntrol eleme
nt, programmi
ng the program by way of placeme
nt reset, guara
ntee stop circuit a
nd order co
ntrol, a
nd desig
ni
ng a PLC co
ntrol system for tablet bottli
ng machi
ne. Through the hardware a
nd software desig
n, to meet the curre
nt co
ntrol i
ndustry pill bottle use requireme
nts. Fi
nally, the program is simulated a
nd debugged, a
nd i
n the process of co
nti
nuous debuggi
ng a
nd modificatio
n, the program is more perfect a
nd the best worki
ng state is achieved. Key words: pill bottli
ng machi
ne co
ntrol system programmable logic co
ntroller tablet separatio
n system