摘要
设计了一套高速数据采集系统,系统基于Xilinx Zynq-7000系列全可编程平台,在Zynq内部实现了数据采集时序控制、高速脉冲计数、异步先进先出存储器(Frist in First out,FIFO)控制等功能。该系统中计数器为32位,采样频率400MHz,误差≤0.035‰。设计了信号调理电路,该电路实现了从离子脉冲信号到Zynq可直接接收的LVTTL电平转换功能。将该系统接入三重四极杆质谱仪进行聚丙二醇(Polypropylene glycol,PPG)质量分析实验,可得到高质量的谱图。该系统具有集成度高、大量程、高精度等特点。
A novel type of data acquisition system has been successfully developed,dedicated to the triple quadrupole mass spectrometer(TQMS)made in China and based on Xilinx Zynq-7000 fully programmable platforms.The newly-designed data acquisition module is capable of data acquisition timing control,high-speed pulse counting and asynchronous first-in-first-out(FIFO)control.The system mainly comprised a 32-bit counter with a sampling frequency of 400 MHz and an error of≤0.035‰.,and a self-designed signal conditioning circuit responsible for converting the ion pulse signal into Zynq directly acceptable LVTTL voltage level.In characterization of polypropylene glycol(PPG)with the TQMS equipped with the new data acquisition system,high quality mass spectra were easily obtained.Moreover,it significantly improves the automation,integration,measurement precision/scale and efficiency of TQMS.
作者
陈昌良
韩文念
汪曣
Chen Changliang;Han Wennian;Wang Yan(School of Precision Instrument and Optoelectronics Engineering,Tianjin University,Tianjin 300072,China;Tianjin Key Laboratory of Biomedical Detection Technology and Instrument,Tianjin University,Tianjin 300072,China)
出处
《真空科学与技术学报》
EI
CAS
CSCD
北大核心
2020年第2期142-147,共6页
Chinese Journal of Vacuum Science and Technology
关键词
三重四极杆
质谱
数据采集
Zynq
Triple quadrupole
Mass spectrometry
Data acquisition
Zynq
