[1]黄健.基于电容感测的盐水质量分数测量[J].深圳大学学报理工版,2021,38(1):92-97.[doi:10.3724/SP.J.1249.2021.01092]
　HUANG Jian.Brine mass fraction measurement based on capacitance sensing[J].Journal of Shenzhen University Science and Engineering,2021,38(1):92-97.[doi:10.3724/SP.J.1249.2021.01092]
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基于电容感测的盐水质量分数测量()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第38卷
期数:
2021年第1期
页码:
92-97
栏目:
电子与信息科学
出版日期:
2021-01-12

文章信息/Info

Title:
Brine mass fraction measurement based on capacitance sensing
文章编号:
202101012
作者:
黄健
西京学院信息工程学院，陕西西安 710123
Author(s):
HUANG Jian
School of Information Engineering, Xijing University, Xi’an 710123, Shaanxi Province, P.R.China
关键词:
电子技术; 电子电路; 仪器仪表技术; 传感器技术; 盐水质量分数测量; 电容感测; 桥式压力传感器; 超声波测距
Keywords:
electronic technology;  electronic circuit;  instrument technology;  sensor technology;  brine mass fraction measurement;  capacitance sensing;  bridge pressure sensor;  ultrasonic ranging
分类号:
TP391
DOI:
10.3724/SP.J.1249.2021.01092
文献标志码:
A
摘要:
采用基于电容式的传感技术，通过检测寄生电容容量的变化，实现准确检测盐水质量分数．将长条形金属薄片插入盐水中，当盐水质量分数发生变化时，金属薄片上的寄生电容会发生相应的变化．数字式的高精度电容感测传感器能够感知这种微弱变化，并将其转换为28 bit的二进制数数字量输出，再通过集成电路总线(inter-integrated circuit, IIC)接口传输到高性能微处理器STM32H743IIT6进行采集和处理．用桥式压力传感器制作的电子秤测量盐水质量，用串口超声波测距模块测量盐水液位高度．采用多传感器数据融合方法，计算得到准确的盐水质量分数．实验结果表明，该方法检测盐水分数的精度可达0.1%．
Abstract:
In order to accurately detect the mass fraction of brine, we design a new type of brine mass fraction measuring instrument. In this instrument, the capacitive sensing technology is adopted to detect the change of parasitic capacitance on the metal sheet. The digital high-precision capacitance sensor can sense this weak change and convert it to 28 bits binary digital output. The data is transmitted to the high performance microprocessor STM32H743IIT6 through the interface of integrated circuit (IIC) for acquisition and processing. The quality of brine is measured by the electronic scale made of bridge pressure sensor, and the height of brine level is measured by the serial port ultrasonic ranging module. The accurate brine mass fraction is calculated by using the multi-sensor data fusion method. The experimental results show that the method can detect the brine mass fraction with an accuracy of 0 1%．

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备注/Memo

备注/Memo:
Received：2019-11-20；Accepted：2020-01-21；Online：2020-10-07
Foundation：Scientific and Technological Plan Projects of Shaanxi Province（2016GY141）
Corresponding author：Associate professor HUANG Jian. E-mail: 565200245@qq.com
Citation：HUANG Jian. Brine mass fraction measurement based on capacitance sensing ［J］. Journal of Shenzhen University Science and Engineering, 2021, 38(1): 92-97.（in Chinese）
基金项目：陕西省科学计划资助项目（2016GY141）
作者简介：黄健(1973—)，西京学院副教授．研究方向：嵌入式开发技术．E-mail：565200245@qq.com
引文：黄健．基于电容感测的盐水质量分数测量［J］. 深圳大学学报理工版，2021，38(1)：92-97.
更新日期/Last Update: 2021-01-26