基于DTMF的远距离数据传输巡更系统设计

Design of patrol system with data transmission via far distance based on DTMF

提出了一种具有与本地计算机通信、DTMF远程数据传输功能为一体的利用非接触式IC卡技术的离线感应式多功能巡更系统,并设计了单片机与USB接口芯片、非接触式IC卡读卡芯片、DTMF编/解码芯片的接口电路以及软件.

A without line patrol system with the multifunction and induced mode is proposed. It centralizes the function of communicating with local computer and data transmission via far distance based on DTMF using the technology of contactless IC card. Meanwhile, single-chip processor, USB interface, contactless IC card, the interface circuit of coding/decoding chip based on DTMF and software have been designed.