摘要
光子计数位置灵敏探测器在光子、粒子成像领域应用广泛,而图像采集系统是其重要组成部分。在介绍光子计数位置灵敏探测器的工作原理的基础上,分析了实现计数成像功能的软硬件需求,并设计了一套满足该需求的软硬件平台;依据该设计搭建了图像采集系统的硬件平台并采用LabVIEW编写了图像采集软件;最后进行成像实验验证了该套图像采集系统的性能。实验结果显示,基于该图像采集系统光子计数位置灵敏探测器能够将空间频率为7.14lp/mm的目标分开,表明该图像采集系统实现了其预期功能。
Photon-counting position-sensitive detector is widely used in the photon and particle imaging field. Based on the introduction of the operating principle of photon-counting position- sensitive detector, the software and hardware requirement to implement its image function are analyzed, and a platform satisfying this requirement is designed. According to this design, the hardware and software of the image acquisition system are developed. Finally, the performance of this image acquisition system is tested by an imaging testing experiment. The test results show that the position-sensitive counting detector based on this imaging acquisition system can tell apart spatial frequency 7. 14 lp/mm object, which indicates that the imaging acquisition system has totally satisfied the functional requirement of the detector.
出处
《光学仪器》
2013年第5期75-79,89,共6页
Optical Instruments
基金
国家自然科学基金资助项目(10878004)
