摘要
本文首先阐述了嵌入式指纹处理模块构建的一般方法,在模块中,采用数字信号处理器TMS320VC5402和指纹传感器MBF200实现指纹图像检测、采集及指纹图像的识别。利用外扩的FLASH芯片存储指纹模版和系统的全部程序,利用外扩的SRAM芯片存储指纹图像数据和临时数据,采用CH375芯片扩展模块的USB接口,使模块具有外挂海量存储器和与上位机进行通信的能力。最后在整个硬件模块实现的基础上构建了整个模块的软件框架。
The general way to design and implement the fingerprint processing module with embedded system are expatiated on firstly in this paper. In the module, detecting ,collecting and identifying fingerprint images is completed by utilizing digital signal processor （TMS 320VC5402） and fingerprint sensor （MBF200）. This module board expands the external SRAM and FLASH as data memory and program memory. With utilizing the CH375 to expand USB interface, the module provides the function to connect external MSF and communicate with PC. Finally, the software frame of the system is built after accomplishing the hardware of the fingerprint processing module.
出处
《传感器世界》
2008年第1期40-44,共5页
Sensor World
