基于STC12单片机的工业物联网数据采集终端设计  

Design of Data Acquisition Terminal for Industrial Internet of Things Based on STC12 MCU

作　　者：罗家毅 赵瑞雪 潘小波[1] 夏兴国[1] 宁平华[1] Luo Jiayi;Zhao Ruixue;Pan Xiaobo;Xia Xingguo;Ning Pinghua(Ma′anshan Technical College,Ma′anshan 243031,China;Hefei Technical College,Hefei 230012,China)

机构地区：[1]马鞍山职业技术学院,安徽马鞍山243031 [2]合肥职业技术学院,安徽合肥230012

出　　处：《廊坊师范学院学报（自然科学版）》2024年第1期64-70,共7页Journal of Langfang Normal University(Natural Science Edition)

基　　金：2021年安徽高校自然科学研究重点项目“基于嵌入式工业物联网的分布式数据远程监控系统研究”(KJ2021A1338);2021年安徽高校自然科学研究重点项目“一种智能城市轨道交通低压电气柜的研究”(KJ2021A1400);2022年安徽省高校学科(专业)拔尖人才学术资助项目(gxbjZD2022117);安徽省职业与成人教育学会规划课题“‘1+X’证书制度下高职机电一体化专业群‘课证融通’的探索与实施”(Azcj2022214)。

摘　　要：针对多过程量的远程监控系统中使用PLC模拟量模块进行数据采集时成本较高、信号易干扰易衰减、系统难扩展等问题,提出一种基于单片机设计的工业物联网数据采集终端。终端包含8路输入通道,可以将小电流模拟量信号转换为合适范围内的电压信号,经过单片机的A/D采集及数据处理后,终端作为从机,由RS485标准通信接口与工业物联网通用的Modbus RTU协议与上位端主机之间实现长线传输。通过与PC端串口调试助手软件工具的通信测试,该数据采集终端的经济性、可靠性、实时性和准确性均得到了验证。Aiming at such problems as high cost,easy signal interference,easy signal attenuation,and difficult system expansion when PLC analog module is used to collect data in multi-process remote monitoring system,an industrial internet of things data acquisition terminal is proposed based on MCU.The terminal contains 8 input channels for converting low-current analogue into voltage signals within the appropriate range.After the A/D acquisition and data processing of the microcontroller,the terminal acts as a slave and transmits through long line via RS485 standard communication interface with the upper computer as a master,by using Modbus RTU protocol,which is generic in industrial internet of things.Through the communication test with the software tool of serial port debugging assistant for PCs,the economy,reliability,real-time and accuracy of this data acquisition terminal have been verified.

关 键 词：单片机 工业物联网 数据采集 MODBUS 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]