基于FPGA自适应调光的指静脉成像及传输系统  

FPGA-based Adaptive Dimming Finger Vein Imaging and Transmission System

作　　者：李杞荣 张文涛[1] 杜浩 熊显名[1] Li Qirong

机构地区：[1]桂林电子科技大学电子工程与自动化学院,广西桂林541004

出　　处：《工业控制计算机》2023年第8期61-63,66,共4页Industrial Control Computer

基　　金：国家自然科学基金(61965005);国家自然科学基金(62205076);广西自然科学基金(2019GXNSFDA185010);广西重点研发计划项目(AB22035047);上海市在线检测与控制技术重点实验室开放基金项目(ZX2021104)。

摘　　要：随着指静脉技术的发展,指静脉识别技术运用于各种复杂场合,因此,指静脉成像质量的要求越来越高。根据近红外光对不同手指的穿透效果不一,提出一种由Xilinx Artix-7FPGA与MT9V034图像传感器以及近红外LED阵列组成的指静脉成像光源的自适应反馈调光方式,保证近红外光强度稳定在一定范围,并与USB3.0开发了一套高速图像采集传输系统。经实验测试结果表明,上位机图像显示稳定,测量不同的手指,其指静脉清晰可见,图像数据上传速率可达42 Mbps以上。With the development of finger vein technology,the requirements of finger vein imaging quality are getting higher and higher.According to the different penetration effect of NIR light on different fingers,this paper proposes an adaptive feedback dimming method of finger vein imaging light source composed of Xilinx Artix-7FPGA with MT9V034 camera and NIR LED array.The proposed method ensures that the NIR light intensity is stable in a certain range,and develops a high-speed image acquisition and transmission system with USB3.0.The experimental test results show that the image display of the upper computer is stable,and the finger veins are clearly visible when measuring different fingers,and the image data upload rate can reach more than 42 Mbps.

关 键 词：指静脉 FPGA MT9V034 USB3.0 自适应 

分 类 号：R318[医药卫生—生物医学工程] TN791[医药卫生—基础医学] TP391.41[电子电信—电路与系统]