摘要
射频识别技术已广泛应用于生产、生活的众多领域,该技术给人们的生活带来了众多的方便。介绍一种以AVR单片机为核心,并利用分立元件构成的125 kHz RFID阅读器设计,电路结构简单、无需读卡基站芯片、成本极低,用于读取EM4100ID卡,读卡距离可达8～15 cm。同时介绍了EM4100射频ID卡的结构及工作原理,提出一种应用AVR单片机对EM4100卡进行解码的软件设计方法。实验验证了方案的可行性和系统的稳定性,可将其应用于门禁、公交等系统中。
The technology of radio frequency identification has been widely used in many fields of production and daily life,and it has brought convenience for people.A 125 kHz RFID reader was designed based on AVR microcontroller,which also employed discrete components.The structure of the circuit is very simple,does not need a read base station IC,and has low cost.It is well suitable to the read operation with EM4100 ID card,and its reading distance is about 8~15 cm.The structure and operation principle of EM4100 ID card are introduced.A software design method of adopting AVR microcontroller to decode EM4100 is proposed.The experiment proves the feasibility of the design and the stability of the system.It can be used in many systems such as access control and public transportation.
出处
《现代电子技术》
2010年第7期111-114,共4页
Modern Electronics Technique
基金
华南理工大学亚热带建筑科学国家重点实验室开放课题基金资助项目(2009KB25)
