LIU Xinyu, OU Yuanbin, ZHANG Shuxin, et al. Design of liquid level detection and precise sample loading control system based on STM32[J]. 2020, (11): 67-70.
LIU Xinyu, OU Yuanbin, ZHANG Shuxin, et al. Design of liquid level detection and precise sample loading control system based on STM32[J]. 2020, (11): 67-70. DOI: 10.13873/J.1000-9787(2020)11-0067-04.
基于STM32的液面探测与精确加样控制系统设计
摘要
开发了一种基于STM32的液面探测与精确加样的控制系统
利用接触式电容式液面探测原理
配合机械臂和高精度计量泵
以STM32F103RCT6为主控芯片
设计了液面检测电路、步进电机驱动电路、脉冲信号转换电路等。实验结果证明:该控制系统有较高的精度
达到了降低误差和避免交叉污染的目的
实用性较强。
Abstract
A control system based on STM32 for liquid level detection and precise sample loading is developed.Using the principle of contact capacitive liquid level detection
with the mechanical arm and high-precision metering pump
using STM32 F103 RCT6 as the main control chip
and the liquid level detection circuit
stepper motor drive circuit
pulse signal conversion circuit
etc
are designed. The experimental result proves that the control system has higher precision
achieves the purpose of reducing errors and avoiding cross-contamination