通用智能卡数据采集器研究与实现

选用当前流行的STM32微控制器为硬件平台，利用智能卡芯片特有的ISO7816通信接口，设计了一款通用的智能卡数据采集系统。该系统通过STM32微控制器采集手机和智能卡之间的通信时钟来获取准确的位宽定时信号，并以相应的位宽间隔进行数据采样，从采样的数据中提取出手机与智能卡交互的PPS，从而达到自适应采集不同智能卡数据的功能。该系统具有硬件设计简单、通用性强、采集速度快、正确性和稳定性高等优点，极大地方便智能卡应用开发人员和业务维护人员的使用。目前该技术已投入实际使用，具有较好的应用前景和参考价值。

Research and Application of Data Collector Based on Universal Smart Card

Chosen the current popular STM32 microcontroller as the hardware platform,and using a smart card chip ISO7816 communication interface,a generic smart card data acquisition system is designed.In order to get accurate timing signal,STM32 microcontroller is used to monitor communications clock between mobile phones and smart card,and the corresponding bits wide is selected as interval for data sampling.Furthermore,the interactive PPS data is extracted from mobile phones and smart card,and then adaptive sampling of different mobile data rates is achieved.This system not only has simple hardware design,strong commonality and high acquisition speed,but also has accuracy and stability etc,which has great facility for smart card application developers and business maintenance personnel.At present,the technology has been put into practice and has good application prospect and reference value.