YAO Qilong, ZHOU Pan, JIANG Yongcheng. Design of on-line monitoring system for grain moisture based on STM32[J]. 2021, (6): 104-106. DOI: 10.13873/J.1000-9787(2021)06-0104-03.
基于STM32的谷物水分在线监测系统设计
摘要
为了实时监测谷物水分变化
设计了一种基于STM32的谷物水分在线监测系统。系统使用STM32单片机作为主控芯片
电容式传感器采集水分数据
经过信号处理电路与STM32单片机处理后
通过RS—485电路传输至上位机实时显示
并可通过上位机校正
可以实时精确地监测谷物水分变化。实地测试表明:该系统性能可靠
在线检测精度可以达到0.5%
完全满足谷物水分测量要求。
Abstract
In order to monitor the change of grain moisture in real time
an on-line monitoring system for grain moisture based on STM32 is designed.The system uses STM32 MCU as the main control chip.The capacitive sensor collects moisture data
after processing with signal processing circuit and STM32 MCU;the data is transmitted to the upper computer through the RS485 circuit for real-time display
and can be corrected by the upper computer.It can accurately monitor grain moisture changes in real time.Field test shows that the system has reliable performance and the on-line detection precision can reach 0.5%
which can fully meet the requirements of grain moisture measurement.