基于PCI-9812的太赫兹成像数据采集系统设计  

Design of Data Acquisition in Terahertz Imaging System Based on PCI-9812

作　　者：罗闯[1] 赵书俊[1] 蒋伟[1] 徐航[1] 牛灵欣[1] 

机构地区：[1]郑州大学,河南郑州450001

出　　处：《现代电子技术》2010年第8期200-201,204,共3页Modern Electronics Technique

摘　　要：基于PCI-9812数据采集卡,针对P4-42热释电探测器,设计一个逐点扫描式的太赫兹成像数据采集系统。计算机通过扫描控制装置中控制样品的移动,使数据采集卡采集由P4-42热释电探测器探测到的太赫兹信号。再在计算机中根据采集到的信号重建被测物体的太赫兹图像,可以实现样品的运动控制、太赫兹信号采集以及图像重建等功能。这对于太赫兹成像的实际应用具有一定的意义。Aiming at pyroelectric detector P4-42, a point-to-point scanning terahertz imaging system is designed with the data acquisition card PCI-9812. In this system, the motion of the sample is controlled by a computer through the scanning device, the terahertz signal detected by pyroelectric detector P4-42 is gathered by the data acquisition card, and the sample＇s terahertz image is reconstructed by the computer according to the gathered signal. The system can accomplish the functions of the sample＇s motion controlling, terahertz signal acquisition, image reconstruction. It has a certain significance in the practical application of terahertz imaging.

关 键 词：太赫兹成像 数据采集 热释电探测器 图像重建 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构] TP274[自动化与计算机技术—计算机科学与技术]