摘要
分析了现有远程自动抄表系统存在的问题:从用户电表到GPRS终端的数据是以有线方式传送,使用维护不便;提出了基于GPRS和RF技术的远程全无线自动抄表系统方案:表计完成抄表,数据通过内置射频电路nRF905传至GPRS终端,GPRS终端通过移动网关实现与Internet的连接,并将接收到的用户数据远传到抄表管理中心,完成自动抄表;介绍了nRF905射频电路的工作模式、寄存器配置和SPI操作指令,讨论了GPRS通信模块与微处理器的连接与使用,给出了nRF905在表计中的应用电路和GPRS终端的硬件结构,提供了部分参考程序。
Problems in existing remote automatic reading meter system has been analyzed. Using wired communicate from user meter to GPRS terminator, resulting in inconvenient maintenance and using. Plan on remote fully wireless automatic reading system has been proposed： user meter realizes reading meter and transmit these data to GPRS terminator by internal RF circuit nRF905, then GPRS terminator connects to Internet through mobile gateway and transmit these data to meter-reading administrator center, realizes automatic reading. Working mode of nRF905 circuit, register configuration and SPI instruction have been introduced. Wiring diagram between GPRS communication module and Microprocessor and been discussed, application circuit of nRF905, hardware structure of GPRS and reference program have been provided.
出处
《计算机与数字工程》
2008年第11期66-70,共5页
Computer & Digital Engineering
关键词
RF技术
GPRS
自动抄表
通信协议
RF technology, GPRS, automatic reading meter, communication protocol
