中文摘要：

介绍了用于一维多道快电子能量损失谱仪的数据获取系统。利用简单的与门电路,并配合DAQ2010采集卡的门控信号实现精确定时,利用定时卡PCI8554来同步采集卡和微机的动作,利用微机的RS232接口通讯来控制扫描电源,从而实现了谱仪的扫描测量。利用多线程技术,提高了采集系统的容错能力。该系统目前已经用在电子能量损失谱仪上,效果良好。

英文摘要：

It describes a data acquisition system used in one dimension multichannel fast electron energy loss spectrometer,which can work in scan acquisition mode and static acquisition mode.The timing precision of the scan mode is less than 4 μs by utilizing the gated signal generated by data acquisition card DAQ2010 and an AND logic circuit.A timer card PCI8554 is used to synchronize the data acquisition card and the personal computer.The scan voltage supply is controlled by the personal computer through the RS232 interface.The multithreading technology is used in the acquisition software in order to improve the accommodating-err ability of the acquisition system.A satisfactory test result is given.