您的位置：山东大学 -> 科技期刊社 -> 《山东大学学报（工学版）》

山东大学学报(工学版)

• 机械工程 • 上一篇    下一篇

血液酒精的近红外光谱法检测预放大电路设计

卢立倩,李增勇*,崔若飞,周伟伟   

  1. 山东大学机械工程学院,山东 济南 250061
  • 收稿日期:2013-06-14 出版日期:2014-06-20 发布日期:2013-06-14
  • 通讯作者: 李增勇(1970- )，男，山东莱芜人，教授，博士，主要研究方向为车辆人机工程.E-mail: zyongli@sdu.edu.cn
  • 作者简介:卢立倩（1987-），女，山东日照人，硕士研究生，主要研究方向为车辆人机工程.E-mail:llqyyk@126.com
  • 基金资助:
    国家自然科学基金资助项目（31371002, 81071223）

Design of pre-amplifier circuit on blood alcohol detection  based on NIR

LU Liqian, LI Zengyong*, CUI Ruofei, ZHOU Weiwei   

  1. School of Mechanical Engineering, Shandong University, Jinan 250061
  • Received:2013-06-14 Online:2014-06-20 Published:2013-06-14

PDF (PC)

1480

摘要： 基于近红外(nearinfrared, NIR)光谱,提出一种血液酒精的检测方法,并设计一种低噪声、低漂移、高精度的前置预放大电路,该电路用于准确检测血液中酒精的体积分数。在本设计电路中的电流电压转化部分,选择使用2种电路对比的方法,通过Multisim电路仿真软件模拟来比较电路的漂移和误差,同时利用Matlab进行数据处理;预放大电路部分利用高共模抑制比的AD620设计了差分放大电路,来提高电路的共模抑制比(common mode rejection ratio,CMRR)。结果表明,使用对称补偿型低温漂电流电压变换电路,能够很好的抑制漂移降低误差,与常用的OP07电流电压转换电路相比,可降低误差约2％,可降低漂移约97％,为微弱信号的处理提供了依据。

关键词: 预放大电路, 酒精体积分数, 低漂移, 高精度, 近红外

Abstract: A blood alcohol detection method was investigated based on NIR(near-infrared) spectroscopy.And a lownoise, low-drift and high-precision preamplifier was designed to detect the blood alcohol volume fraction accurately. In the current-voltage conversion section, the simulation of drift and error of two kinds of circuits were carried out by Multisim software.AD620 was selected in the preamplifier part which could improve the CMRR(common mode rejection ratio) of circuits. The results of simulation showed that the current-voltage conversion circuit of symmetrical compensational low-temperature drift can suppressed the drift and reduced error better. Compared with the OP07 current-voltage conversion circuit, the error could be reduced by 2％, while the draft could be reduced by 97％, which could support weak signal analyzing.

Key words: near-infrared, pre-amplifier circuit, low drift, high-precision, alcohol volume fraction

[1] 张亮亮1,2,李建平1,2,王岩1,2,陈国强1,2,李增勇1,2*. 汽车驾驶员脑氧参数的振动响应特性分析[J]. 山东大学学报(工学版), 2011, 41(1): 91-94.
[2] 孙杰 李剑峰. 钛合金整体结构件加工关键技术研究[J]. 山东大学学报(工学版), 2009, 39(3): 81-88.
Viewed
Full text
708
HTML PDF
Just accepted Online first Issue Just accepted Online first Issue
0 0 0 708 0 0

  From Others local
  Times 108 600
  Rate 15% 85%

Abstract
1242
Just accepted Online first Issue
1242 0 0
  From Others
  Times 1242
  Rate 100%

Cited
Web of Science  Crossref   ScienceDirect  Search for Citations in Google Scholar >>
 
This page requires you have already subscribed to WoS.
  Shared   
  Discussed   
No Suggested Reading articles found!
版权所有 © 2018 《山东大学学报(工学版)》编辑部　
地址: 济南市山大南路27号（250100）　 电话: 0531-88366735　 E-mail: xbgxb@sdu.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发