A liquid level detection system with capacitance method based on pipette structure

YANG Yi; GUO Yang-kuan; ZHU Lian-qing; LIU Chao; MENG Xiao-chen

doi:10.13873/J.1000-9787(2015)10-0048-03

Chinese

您当前的位置：

首页 >

文章列表页 >

A liquid level detection system with capacitance method based on pipette structure

更新时间：2025-09-11

- A liquid level detection system with capacitance method based on pipette structure
- Vol. 34, Issue 10, Pages: 48-50(2015)
- 作者机构：
  
  北京信息科技大学光电测试技术北京市重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2015)10-0048-03
  CLC： TP212;TP274
- Published：2015
- 稿件说明：
移动端阅览
[1]杨溢,郭阳宽,祝连庆,刘超,孟晓辰.一种基于加样针结构的电容法液位检测系统[J].传感器与微系统,2015,34(10):48-50.

YANG Yi, GUO Yang-kuan, ZHU Lian-qing, et al. A liquid level detection system with capacitance method based on pipette structure[J]. 2015, 34(10): 48-50.
[1]杨溢,郭阳宽,祝连庆,刘超,孟晓辰.一种基于加样针结构的电容法液位检测系统[J].传感器与微系统,2015,34(10):48-50. DOI： 10.13873/J.1000-9787(2015)10-0048-03.

YANG Yi, GUO Yang-kuan, ZHU Lian-qing, et al. A liquid level detection system with capacitance method based on pipette structure[J]. 2015, 34(10): 48-50. DOI： 10.13873/J.1000-9787(2015)10-0048-03.

摘要

为实现全自动凝血分析仪加样过程高灵敏度和高精度的液位检测

采用了电容传感器原理和步进电机运动控制相结合的方法。介绍了探针式电容传感器的结构与工作原理;分析了电容/周期转换法的检测原理;组建了实验系统对灵敏度和测量精度进行检测。实验结果表明:加样针接触液面的瞬间

脉冲周期发生40%左右的显著变化

液位测量的标准差为4.1μm。

Abstract

To achieve high sensitivity and high precision liquid level detection on pipetting process of automatic coagulation analyzer

a capacitive sensor principle combined with stepper motor motion control method is used.Structure and working principle of probe-type capacitive sensor are introduced; detecting principle of C / T conversion method is analyzed; an experiment system is set up to test sensitivity and precision. Results show that the change of pulse period reach to around 40 % at the moment while pipette is contacting liquid surface

the standard deviation is 4. 1 μm.

关键词

Keywords

references

一种提高全自动酶免分析仪微量移液精度的方法 [J]. 祝连庆,张文昌,董明利,郭阳宽,常海涛. 仪器仪表学报 . 2013(05)

基于自适应算法的液面检测系统 [J]. 曾柏杞,欧阳红林,苏深广,龚燕妮. 传感器与微系统 . 2012(08)

基于专用控制芯片的步进电机运动控制系统设计 [J]. 石星星,吴洪涛. 电子设计工程 . 2012(09)

全自动临床检验仪器中液面探测技术的进展 [J]. 朱险峰,张阔,曾思思,孙涛,赵文浩,王明时. 生物医学工程学杂志 . 2010(04)

用MATLAB语言建立液位电容传感器特性的数学模型 [J]. 刘松龄,何翔. 仪表技术与传感器 . 2001(06)

Views

181

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Design of marine oil level detection system based on ultrasonic sensor

Design of on-line monitoring system for grain moisture based on STM32

Design of paper quantity measurement system based on FDC2214

Design and application of liquid level detection system for automatic biochemical analyzer

Design of capacitive sensor based on Sigma-Delta modulation

Related Author

YANG Yuchen

HOU Xinyu

LIU Xiaobai

LIU Zhaonian

JIANG Yongcheng

ZHOU Pan

YAO Qilong

HUA Yongzhu

Related Institution

Exploration and Development Data Resource Center，CNOOC Research Institute Co Ltd

School of Electrical Engineering and Automation,Anhui University

Institute of New Electron Device and Application, Hangzhou Dianzi University

Wuxi Cross Medical Co Ltd

School of Internet of Things Engineering,Jiangnan University

⁰