基于STC12C5A60S2的VOC采样罐清洗系统设计

Design and Research of VOC Canister Cleaning System

近年来,挥发性有机化合物(VOC)的污染是继PM2.5、SO2、NOx和氟利昂后成为世界各国关注的又一焦点.现在国内外监测VOC的方法普遍固定,都是将VOC采样罐放在环保局、学校、各地环境监测站,进行常年定时监测,采样罐每次使用完毕需要及时进行彻底清洗,所以设计VOC清洗系统是有必要的.文章设计的VOC采样罐清洗系统是基于STC12C5A60S2单片机的,控制器以工业液晶显示屏方式显示温度值、压力值、清洗状态、清洗时间、清洗次数,有加热器、温度传感器、压力传感器对温度、压力进行实时采样,用户可通过按键自行设定系统参数.通过搭建实验平台,液晶显示屏实时显示各项参数,表明采样罐清洗系统是稳定可靠的.

Much attention is paid to the pollution of volatile organic compounds （VOC） in recent years. It isnecessary to rinse the sampling kits thoroughly. Based on SCM STC12C5A60S2, it designs a cleaning system forVOC canister. The controller displays temperature, pressure, cleaning status, cleaning time, cleaning times on theLCD. There are heaters, temperature sensors, pressure sensors for real-time sampling, and the user can setparameters the by pressing a button. It shows that this system is stable and reliable.