基于RS-485总线的微波干燥机数据采集系统的设计  

Design of Microwave Dryer Data Acquisition System Based on RS-485 Bus

作　　者：张博学 周杨[1] 孙婉怡 朱典典 牛建邦 丁贵华 Zhang Boxue;Zhou Yang;Sun Wanyi;Zhu Diandian;Niu Jianbang;Ding Guihua(College of Information Science & Electronic Technique,Jiamusi University, Jiamusi Heilongjiang 154007, China)

机构地区：[1]佳木斯大学信息电子技术学院,黑龙江佳木斯154007

出　　处：《山西电子技术》2021年第5期16-17,31,共3页Shanxi Electronic Technology

摘　　要：微波干燥机的电气线路存在体积大、布线庞杂等问题。设计一套基于RS-485总线的多通道数据采集系统,以单片机为核心芯片实现多个电流和温度的采集和A/D转换,转换后的数据使用Modbus协议经RS-485总线发送至上位机PLC。经测试和实际应用表明,能够大大降低布线复杂度,节约成本。There are some problems in the electric circuit of microwave dryer,such as large volume,complicated wiring,etc.A set of multi-channel data acquisition system based on RS-485 bus is designed.The multi-current and temperature acquisition and A/D conversion are realized with single-chip microcomputer as the core chip.The converted data is sent to the host computer Plc via RS-485 bus using Modbus protocol.The test and practical application show that it can greatly reduce the complexity of wiring and save the cost.

关 键 词：总线通讯 电流检测 PT100 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]