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国家自然科学基金(21027013)

作品数:2 被引量:9H指数:2
相关作者:唐飞高利鑫王晓浩更多>>
相关机构:中北大学清华大学更多>>
发文基金:国家自然科学基金更多>>
相关领域:自动化与计算机技术理学更多>>

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基于催化发光的电子舌对茶叶的识别
随着社会对无损、快速、智能检测技术的需求,以传感器阵列为基础的"电子鼻"、"电子舌"等智能检测技术成为了研究的热点。电子舌是一种利用传感阵列感测液体样品的特征响应信号,通过信号模式识别处理以及专家系统学习识别,对样品进行...
牛卫芬孔浩张四纯张新荣
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基于TMS320F2812与LabVIEW的FAIMS信号采集处理系统被引量:7
2012年
为实现FAIMS物质检测系统小型化、便携式的设计要求,设计了以TMS320F2812和WinCE平台下的LabVIEW为控制核心的信号采集处理系统。TMS320F2812驱动、控制各电路模块,产生PWM驱动信号和0.01 V分辨率的补偿电压,同时控制A/D芯片实现补偿电压和微弱电流的精确采集。TMS320F2812和La上VIEW通过串口进行实时通信,经过一系列数据处理,使微弱电流采集精度达0.1pA,补偿电压采集精度达0.01 V。
高利鑫唐飞王晓浩
关键词:FAIMSTMS320F2812补偿电压微弱电流LABVIEW串口通信
Design and performance of air flow-assisted ionization imaging mass spectrometry system被引量:2
2014年
The imaging mass spectrometry(IMS) technology has experienced a rapid development in recent years.A new IMS technology which is based on air flow assisted ionization(AFAI) was reported.It allows for the convenient pretreatment of the samples and can image a large area of sample in a single measurement with high sensitivity.The AFAI in DESI mode was used as the ion source in this paper.The new IMS method is named AFADESI-IMS.The adoption of assisted air flow makes the sample pretreatment easy and convenient.An optimization of the distance between the ion transport tube and MS orifice increases the sensitivity of the system.For data processing,a program based on MATLAB with the function of numerical analysis was developed.A theoretical imaging resolution of a few hundred microns can be achieved.The composite AFAI-IMS images of different target analytes were imaged with high sensitivity.A typical AFAI-IMS image of the whole-body section of a rat was obtained in a single analytical measurement.The ability to image a large area for relevant samples in a single measurement with high sensitivity and repeatability is a significant advantage.The method has enormous potentials in the MS imaging of large and complicated samples.
Fei TangYi ChenJiu-Ming HeZhi-Gang LuoZeper AblizXiao-Hao Wang
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