Design of liquid level detection and precise sample loading control system based on STM32

LIU Xinyu; OU Yuanbin; ZHANG Shuxin; CHEN Xin

doi:10.13873/J.1000-9787(2020)11-0067-04

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Design of liquid level detection and precise sample loading control system based on STM32

更新时间：2025-09-11

- Design of liquid level detection and precise sample loading control system based on STM32
- Issue 11, Pages: 67-70(2020)
- 作者机构：
  
  深圳大学医学部生物医学工程实验中心
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2020)11-0067-04
  CLC： TH77
- Published：2020
- 稿件说明：
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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：

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.

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

and has strong practicability.

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