主要介绍基于ARM9的嵌入式自动指纹识别系统的实现方法,并具体说明了该系统的硬件组成部分和软件组成部分.其中硬件部分主要包括核心处理芯片ARM9系列的S3C2500、指纹传感器FPS200、存储器、电源模块和通信接口等.软件部分主要包括系统初始化、指纹采集程序和通信程序等.解决了S3C2500和指纹传感器FPS200之间的时序冲突问题.该系统实现的主要功能有快速采集指纹、与计算机通信以及为后续的指纹处理建立一个完整可靠的平台.

This paper introduces an implementation method of Embedded Automatic Fingerprint Identification Systerm(AFIS), dealing mainly with hardware components and software modules based on ARM9. Hardware system consists of ARM9 series S3C2500, FPS200 sensor, memories, power supply ,communication interface, etc. System initiation, fingerprint sampling procedure and communication program are main modules making up of system software.The conflict of time-sequence between S3C2500 and sensor FPS200-one of the key links of the system, has been solved successfully. The system has integrated functionalities,such as fast sampling, communicating with upper and lower computers, establishing a complete and reliable platform for fingerprint image processing and identification.

TP368.2