便携式气相色谱仪共用开发平台中多功能一体化控制器模块的研制

摘要

Based on the design concept of a shared development platform, we developed a multi-functional all-in-one controller module, consisting of a programmable logical controller(PLC), a driver module, and a signal acquisition system.Our module can be integrated directly into portable gas chromatographs (GC).Through evaluation, it was confirmed that the chromatography temperature fluctuation was ≤±0.1 ℃.The fluctuation RSD of 60 ℃/min warming-up was <0.15%.The temperature fluctuation in the sampler inlet and detector was ≤±0.1 ℃ and the RSD of qualitative and quantitative repeated deviation were 0.1% and 4.6% (peak height) respectively.The temperature and humidity range in which the device works were 0~40 ℃ and 95% respectively.The module successfully passed the tests of sine wave and XYZ direction vibration of 25.4 mm displacement, 1.5 g acceleration and 5~200~5 Hz frequency.The application of the module to 3 new types of analytical instruments achieved desirable results.The module meets the demand of on-site and field application and features versatility, sturdiness, small volume and low power consumption.%基于整体便携式气相色谱仪共用开发平台的设计理念,研制出了多功能一体化控制器模块.模块包括控制器、功率驱动组件和信号采集组件,直接嵌入到便携式气相色谱仪中.经试验考核,色谱柱温度波动不高于±0.1 ℃,60 ℃/min速率升温波动的RSD低于0.15%,进样口和检测器温度波动不高于±0.1 ℃,柱压不高于±0.16 KPa.以浓度为1 mg/m3的苯标准样品连续6次自动抽取1 mL样品进样分析,定性和定量重复性偏差RSD分别为0.1%和4.6%(峰高),温湿度试验为0~40 ℃和95%,振动试验(无运输包装)位移为25.4 mm、加速度为1.5 g,以频率5~200~5 Hz正弦波振动与XYZ轴向振动,试验结果正常.模块应用到3种新型仪器中效果理想,满足现场及野外应用要求,具有通用、坚固、体积小和功耗低等特点.