新型多参数水质分析仪流路控制系统的设计  

Design of New Streams Control System for Multi-parameter Water Quality Analyzer

作　　者：武新[1] 温志渝[1] 魏康林[1] 高亮[1] 余清华[1] 

机构地区：[1]重庆大学新型微纳器件与系统国家重点学科实验室,重庆400044

出　　处：《化工自动化及仪表》2011年第4期439-442,共4页Control and Instruments in Chemical Industry

基　　金：国家"863"计划项目(2007AA042101);科技部国际科技合作项目(2007DFC00040)

摘　　要：以单片机为核心,运用十联体电磁阀、三通阀和微型步进蠕动泵等流控器件设计新型多流路控制系统。对比测试结果表明,该系统能完成20多种流路切换,进样速度快,加样误差小于1%,能快速、高效地清洗进样通道,并避免交叉污染,而且成本低、不易堵塞、稳定性良好。A novel multi-stream control system was proposed for multi-parameter water quality analyzer.The MCU-cored system consisting of streams control devices of ten conjoined solenoid valves,three-way valve and step peristaltic micro-pump has characteristics of low cost and less plugging and high stability compared with the streams systems composed of multi-position valve and injector pump.Testing results show that this system can achieve streams switching among over 20 streams,8mL/min sample rate,less than 1% sampling error,a quick cleaning and elimination of cross-contamination.

关 键 词：流路切换 流路控制 电磁阀 微型蠕动泵 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]