基于FDC2214的烘干机水分实时检测系统  

Dryer moisture real-time detection system based on FDC2214

作　　者：周攀 姚启龙 沙文[1] ZHOU Pan;YAO Qilong;SHA Wen(School of Electrical Engineering and Automation,Anhui University,Hefei 230601,China)

机构地区：[1]安徽大学电气工程与自动化学院,安徽合肥230601

出　　处：《传感器与微系统》2021年第7期102-104,共3页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(61505001)。

摘　　要：基于FDC2214芯片提出了一种新的烘干机水分实时检测系统。以STM8为主控芯片,使用I 2C接口通过FDC2214读取方形电容式传感器的电容值,同时加入了K型热电偶对系统进行温度补偿,使用Modbus-RTU协议和RS-485电路将信息实时上传到上位机上显示并记录成表。经过现场实际测试,平均误差控制在0.5%以内,符合实际使用需求。Low-power and high-precision capacitive sensor chip FDC2214 is used,and a new dryer moisture real-time detection system is proposed based on this chip.The system uses STM8 as the main control chip,uses the I 2C interface to read the capacitance value of the square capacitive sensor through FDC2214,and adds the K-type thermocouple to temperature compensation of the system.The information is real-time using Modbus-RTU protocol and RS-485 circuit,uploaded to the host computer to display and record into a table.After actual field testing,the average error is controlled within 0.5%,which meets the actual use requirements.

关 键 词：STM8 FDC2214 MAX6675 水分检测 

分 类 号：TS210[轻工技术与工程—粮食、油脂及植物蛋白工程] TP212[轻工技术与工程—食品科学与工程]