基于PCI总线的红外探测器图像数据采集系统设计与实现

Design and Implementation of a Image Data Sampling System for Infrared Detector Based on PCI Bus[HS)]

摘要:

红外成像探测系统在调测过程中,通常需要完成探测系统输出图像和辅助信息的采集、保存和分析；根据红外成像探测系统输出信息的特点,文章介绍了基于PCI总线技术的红外探测器图像数据采集系统的软硬件设计方法和实现方案,解决了多种分辨率红外图像的实时数据采集、显示和储存问题；系统通过接受320*256以及640*512分辨率的图像进行测试；经过测试表明:通过使用DMA方式,PCI总线读取速率达到了49.0 MByte/s,可以准确无误地对多种分辨率红外图像和辅助信息进行高速实时采集,满足测试系统的使用需求,为红外成像探测系统的调测提供了坚实的基础。

Abstract:

Infrared detection imaging and supplementary information collection, storage and analysis have been proved to be very important in Infrared imaging test system. According to the characteristics of infrared imaging detector system output information, a hardware and software design methods and implementation scheme of infrared detector based on PCI bus technology are introduced, which is also helpful in solving problems such as the real- time data acquisition, display and storage of various resolution infrared images. System tests are based on 320*256 and 640*512 resolution image accepting.Tests indicate that the read rate of PCI bus can reach 49.0MByte/s by using DMA. It can accurately implement high speed real-time sampling of various resolution infrared image and auxiliary information, which fully meet the user’s requirements of the testing system, and provides a solid foundation for infrared imaging detector system output sampling.