采集控制多线程一体化的集成式FAIMS主控系统设计与实现  

Design and Implementation of Integrated FAIMS Master Control System with Multithreading of Acquisition and Control

作　　者：赵思洋 杜晓霞 游占华 牟家浩 曾鸿达 肖文香[1] 朱健铭 李华[1] ZHAO Si-yang;DU Xiao-xia;YOU Zhan-hua;MOU Jia-hao;ZENG Hong-da;XIAO Wen-xiang;ZHU Jian-ming;LI Hua(School of Life and Environmental Sciences,Guilin University of Electronic Technology,Guilin 541004,China;China National Petroleum Logging Co.,Ltd.Technology Center,Xi􀆳an 710077,China)

机构地区：[1]桂林电子科技大学生命与环境科学学院,广西桂林541004 [2]中国石油集团测井有限公司技术中心,陕西西安710077

出　　处：《仪表技术与传感器》2020年第11期68-73,共6页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(61864001);广西自然科学基金项目(2017GXNSFAA198256);广西自动检测技术与仪器重点实验室主任基金项目(YQ18113);国家级大学生创新项目(201810595009);区级大学生创新项目(201810595177)。

摘　　要：计了一种高集成度FAIMS(high⁃field asymmetric waveform ion mobility spectrometry)主控系统,由主核、副核、接口、采集、反馈控制、隔离、电源7部分组成。该主控系统具有24位高精度ADC及12位补偿电压输出,并可兼容多种前级微弱电流采集设备,包括fA电流检测电路及Keithley电流计。全集成化的主板设计减少了体积和繁杂的线路连接,整体大小为86 mm×99 mm×32 mm。实验结果表明:采集1000个数据量耗时12 s,背景噪声小于0.1 pA,最小电流分辨率0.15 pA。与现有FAIMS系统相比,该系统在并发处理效率、系统控制调试、接口通用性等方面均有提升,为FAIMS仪器的便携式发展提供了基础。A highly integrated FAIMS(high-field asymmetric waveform lon mobility spectrometry)master board was de⁃signed,which consists of seven parts,such as main core,secondary core,interface,acquisition,feedback control,isolation and power supply.It has 24⁃bit high⁃precision ADC and 12⁃bit compensation voltage output.It can also be compatible with multi⁃front⁃stage weak current acquisition equipment,including fA current detection chip and Keithley galvanometer.The fully integrated de⁃sign of the main board reduces the complicated circuit connection,and the size of the main control board is 86 mm×99 mm×32 mm.The experimental results show that it takes about 12 seconds to collect 1000 data.The background noise is less than 0.1 pA and the minimum current resolution is 0.15 pA.Comparing with the existing FAIMS system,the system effectively improves the concurrent processing efficiency,system control and adjusting,and interface versatility.It lays a good foundation for the portable development of FAIMS instruments.

关 键 词：FAIMS 主控系统 主核 副核 集成 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]