CAJ | 학술논문

针对物联网工程应用，设计了一种低成本的轻量级物联网网关。该网关采用32位Cortex-M3微处理器STM32F107VC和开源嵌入式操作系统FreeRTOS作为系统平台，运行FAT文件系统、TCP/IP和Modbus协议，通过 RS485网络和433MHz 无线网络采集现场传感器数据，并可将数据存储于 SD 卡，具有以太网和GPRS DTU 2种连接Internet的通信链路，支持通过2种链路上传数据到服务器或接收服务器的远程控制。网关成本低、功耗小、多链路、通信实时性好，适合应用于物联网监测领域。
침대물련망공정응용，설계료일충저성본적경량급물련망망관。해망관채용32위Cortex-M3미처리기STM32F107VC화개원감입식조작계통FreeRTOS작위계통평태，운행FAT문건계통、TCP/IP화Modbus협의，통과 RS485망락화433MHz 무선망락채집현장전감기수거，병가장수거존저우 SD 잡，구유이태망화GPRS DTU 2충련접Internet적통신련로，지지통과2충련로상전수거도복무기혹접수복무기적원정공제。망관성본저、공모소、다련로、통신실시성호，괄합응용우물련망감측영역。
In this paper, we design and implement a low cost and lightweight gatewayfor engineering application of the Internet of things, adopting STM32F107VC based on 32 bit Cortex-M3 core and open source embedded operating system FreeRTOS as the system platform, operated by FAT file system, TCP/IP and Modbus protocol. Gateway can acquire sensor data in field through RS485 or 433MHz wireless network, and store them on build-in SD memory card. It can connect Internet by using link of Ethernet or GPRS, transmit data to server, and be controlled remotely. Characterized by low cost, low power, multi-interface, and real-time, it offers a more cost-efficient solution to supervisory system in IOT.