摘要
介绍一种基于NFC技术的UHF移动支付系统读卡器设计方案。首先对整个系统的框架进行了说明;然后分别介绍主要功率模块的设计,重点描述了nRF24L01的性能参数和工作原理,通过对距离控制模块的分析,提出了一种新型的UHF移动支付系统距离控制方法;最后描述了该系统的主程序流程图。实际应用结果表明该读卡器刷卡距离可控,具有抗干扰、抗冲突等特点,不需要更换手机,有效地解决了13.56MHzNFC移动支付系统只支持内嵌NFC模块手机的缺点。
In this paper, a UHF mobile payment system interrogator based on NFC technology is introduced. At first, the configuration of this system is explained. Then the design of main power module is presented. The parameters and principle of nRF24L01 are mainly described. Trough the analysis of distance control module, a new distance control method of UHF mobile payment system is presented. At last, the main software flow is given. The practical application results showed that the reader presented by this paper can control the distance of reading card, have the characteristics of anti-interference and anti-collision and effectively resolve the shortcomings that 13. 56 2MHz NPC mobile payment system only supports the phones which are embedded NFC module.
出处
《电子测量技术》
2009年第11期27-30,共4页
Electronic Measurement Technology
