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根据物联网技术和嵌入式技术原理,提出了一种基于ARM(AT91RM9200)和WiFi技术的智能远程抄表系统。在该系统中,现场采集设备(即电表)可以通过RS485或者RS232总线接口与嵌入式采集设备进行通信,实现采集数据的上传。嵌入式采集设备和无线接入网关之间通过WiFi实现远程无线连接,网关后端接入Internet网络从而最终实现抄表采集数据的远程传输。给出了详细的远程采集装置硬件设计和系统软件设计。实验结果表明,提出的系统运行效果良好,具有较好的可操纵性和可靠性。
According to Internet of Things technology and embedded technology principle, an intelligent remote meter reading system based on ARM (AT91RM9200) and WiFi technology is proposed. In this system, the on-site collection equipment (ie meter) can communicate with the embedded collection equipment through RS485 or RS232 bus interface to realize the collection of data upload. Embedded wireless access devices and wireless access gateways between the realization of long-range wireless WiFi connection, gateway back-end access to the Internet so that the ultimate realization of remote data acquisition meter reading. A detailed remote acquisition device hardware design and system software design are given. The experimental results show that the proposed system works well and has good maneuverability and reliability.