近年来,由于环境污染的不断加剧,大气颗粒物污染也日趋严重,极大地危害了人类的健康.以EasyARM1138嵌入式系统为核心,设计了一种基于光散射法的大气颗粒物质量浓度监测与预警系统,可检测颗粒物的粒径范围是0.1-10μm.当环境中大气颗粒物质量浓度连续超标时,系统不仅可以进行在线语音报警,而且可以通过GPRS模块将报警信息发送给环境监测人员,使监测人员实时地了解环境状况.实践结果证明,该系统不仅能满足恶劣环境检测的要求,而且具有测量准确、实时性强、成本低等优点.%In recent years, with continuing aggravation of environmental pollution, the atmospheric particulate pollution has been increasingly serious, which greatly harms the health of human being. In this paper we design an atmospheric particulate matter monitoring and early warning system based on the light scattering method. The system uses EasyARM1138 embedded system as its core, the particle diameter ranges of the particulates it can detect is from 0. lμm to 10μm. Once the environment's particulates mass concentration continuously exceeds the standard, the system can make online voice alarm and send alarm information to the staff of environmental monitoring through GPRS wireless communication module, so that the staff can easily know the real-time environmental situations. Practice has proved that the system can meet the detection requirements in harsh environment, and has the advantages of accurate measurement, strong real-time ability and low cost, etc.
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