[1]刘恒,任洪亮.非分散红外二氧化碳检测仪研制[J].华侨大学学报(自然科学版),2017,38(6):854-857.[doi:10.11830/ISSN.1000-5013.201507038]
　LIU Heng,REN Hongliang.Carbon Dioxide Detector Based on Non-Dispersed Infrared Principle[J].Journal of Huaqiao University(Natural Science),2017,38(6):854-857.[doi:10.11830/ISSN.1000-5013.201507038]
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非分散红外二氧化碳检测仪研制()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第38卷
期数:
2017年第6期
页码:
854-857
栏目:
出版日期:
2017-11-20

文章信息/Info

Title:
Carbon Dioxide Detector Based on Non-Dispersed Infrared Principle
文章编号:
1000-5013(2017)06-0854-04
作者:
刘恒;  任洪亮
华侨大学 信息科学与工程学院, 福建 厦门 361021
Author(s):
LIU Heng;  REN Hongliang
College of Information Science and Engineering, Huaqiao University, Xiamen 361021, China
关键词:
CO2;  气体检测;  Lambert-beer定律;  热释电传感器;  光源调制;  滤波放大电路
Keywords:
CO2;  gas detection;  Lambert-beer low;  pyroelectric sensors;  light source modulation;  filtering-amplifying circuit
分类号:
X853
DOI:
10.11830/ISSN.1000-5013.201507038
文献标志码:
A
摘要:
设计一种电调制、一体化的二氧化碳体积分数检测系统.该系统基于CO2气体分子对红外光的特征吸收和Lambert-beer定律,采用双通道设计,由热释电传感器检测到的两路信号经过1 Hz低通放大电路处理后,输入示波器显示.为了避免光源波动对测量结果的影响,采用5 V稳压电路驱动红外光源,单片机对其进行1 Hz亮灭调制.对两路输出信号进行计算,可得CO2体积分数.结果表明:检测仪量程为0%~80%,响应时间小于1.5 s.
Abstract:
A compact non-dispersed infrared CO2 measuring system using electrical modulated infrared source is designed. The system uses dual channel pyroelectric sensors to detect CO2 molecular based on characteristic infrared absorption and Lambert-beer low. Two channels signals detected from pyroelectric sensor are filtered by 1 Hz low pass amplifier circuit. The measured result is displayed on an oscilloscope. In order to avoid measurement result is affected by light source fluctuation, the infrared light source is powered by 5 V voltage regulator circuit, and it is switched on and off with 1 Hz modulation frequency controlled by a single chip. The volume fractions of CO2 is obtained according to the calculation of the tow output signal. Result shows that the detector has the measurement rang of 0%-80%, the response time less than 1.5 s.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2015-07-26
通信作者: 任洪亮(1980-),男,副教授,博士,主要从事光电检测及光学微操控仪器研发的研究.E-mail:renhongliang@hqu.edu.cn.
基金项目: 福建省自然科学基金资助项目(2012J05120); 福建省泉州市科技计划资助项目(2012Z95); 华侨大学科技文化创新基金资助项目(201510385040)
更新日期/Last Update: 2017-11-20