基于FPGA与指纹识别的支付系统设计

Design of Payment System Based on FPGA and Fingerprintldentification

随着科学技术的飞速发展,大型支付系统如支付宝、微信等广泛地融入到人们的生活中,但是它并不适用于小型门店消费与充值等应用场景。为了能够实现具有独立记录的小型支付系统,文章提出了一个基于FPGA的指纹支付系统。该系统采用键盘、显示器以及传感器等外设,当键盘获取到输入信息后,它将信号送到FPGA中,通过VGA协议显示到显示器。指纹模块通过UART通信协议完成数据传输与控制,获取FPGA发来的控制信息后进入录入、验证等状态。系统联调表明,它具有开户、查询、充值和消费等功能,不依赖账户的识别模式,依托于指纹搜索结果,适用于小规模应用场景。

With the rapid development of science and technology,large payment systems such as Alipay and WeChat have been widely integrated into people's lives,but they are not suitable for application scenarios such as consumption and recharge in small stores.In order to realize a small payment system with independent records,this paper proposes a fingerprint payment system based on FPGA.The system uses keyboard,display,sensor and other peripherals.When the keyboard gets the input information,it scnds thc signal to FPGA and displays it to the display through VGA protocol.The fingerprint module completes data transmission and control through UART communication protocol,obtains the control information sent by FPGA,and then enters the entry,verification and other states.The system joint debugging shows that it has the functions of account opening,inquiry,recharge and consumption,does not rely on the identification mode of the account,and relies on the fingerprint search results,which is suitable for small-scale application scenarios.