在线签名识别的数据采集与通信

Data Acquisition and Communication System for On-line Signature Verification

笔迹信息的数据采集是在线签名识别算法的基础。设计由四线电阻式触摸屏,触摸屏控制器ADS7846,单片机AT89S52构成的采集系统实现在线签名识别的数据采集。采用USB接口芯片PDIUSBD12实现与PC机的通信。实现了对签名笔迹的坐标、速度及压力信息的采集与传输,并对采集的数据进行预处理。实验结果表明签名采集系统采集精度高,稳定可靠,抗干扰能力强。

The acquisition of multidimensional data is the base of arithmetic of on - line signature verification. This paper designs the on-line signature data acquisition system which consists of touch panel, touch panel controller ADS7846, MCU AT89S52, and uses the USB controller PDIUSBD12 for the data transmission with PC. This system realizes the acquisition and transmission of coordinates,speed and pressure. And we make preprocessing with the data. The experiment result expresses that the signature data acquisition system has high acquisition accuracy,stability and high anti- interference ability.