基于GMP标准的药品阴凉库温湿度控制系统设计

Design of the Temperature and Humidity Control System on Drug Cold Storage Based on GMP Standard

针对药厂存放药品环境对温湿度的控制需求,设计了一套以西门子S7-200 Smart系列PLC为控制器的温湿度监控系统,完成了对库内9个采集点的温湿度采集、显示和预警,实现了风机和变频器等设备精确可靠的控制,并能对库内温湿度环境进行远程监控和记录。该系统能够有效控制环境温度保持在15~20℃之间,湿度保持在55%~75%RH之间,达到药品阴凉库的标准及要求。

It is very important for the pharmaceutical factory to store the drug environment and control the tempera- ture and humidity,a set of monitoring system of temperature and humidity controller based on SIEMENS S7-200 Smart series PLC is designed,the temperature and humidity acquisition,display and warning of the 9 sampling points in the reservoir are obtained. This system has realized the accurate and reliable control of the fan and frequency converter,and can monitor and record the humidity environment. It can effectively control the temperature of the en- vironment at 15-20 ℃,the humidity is kept between 55%-75%RH,and the GMP standard and requirements of the drug cool storage are reached.