Development of a CO sensor for early fire detection

Jing-min DANG; Hai-ye YU; Fang SONG; Yi-ding WANG; Yu-jing SUN

doi:10.3788/OPE.20182608.1876

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Development of a CO sensor for early fire detection

Laser Spectroscopy | 更新时间：2020-08-13

- Development of a CO sensor for early fire detection
- Optics and Precision Engineering Vol. 26, Issue 8, Pages: 1876-1881(2018)
- 作者机构：
  
  1.吉林大学生物与农业工程学院, 吉林长春 130022
  2.吉林大学电子科学与工程学院, 吉林长春 130012
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20182608.1876
  CLC： TP212
- Received：18 April 2018，
  
  Accepted：01 June 2018，
  
  Published：25 August 2018
- 稿件说明：
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Jing-min DANG, Hai-ye YU, Fang SONG, et al. Development of a CO sensor for early fire detection[J]. Optics and precision engineering, 2018, 26(8): 1876-1881.
DOI：

Jing-min DANG, Hai-ye YU, Fang SONG, et al. Development of a CO sensor for early fire detection[J]. Optics and precision engineering, 2018, 26(8): 1876-1881. DOI： 10.3788/OPE.20182608.1876.

摘要

为了实现对火灾的早期探测，设计了一种高精度、高灵敏度CO传感器。该传感器以激射波长的为2.33 μm的连续型分布反馈激光器为光源。采用波长调制光谱（WMS）技术与一次谐波量化的二次谐波检测方法相结合的研究手段，对典型环境压力下复杂、重叠的光谱吸收特征进行分离，从而实现了良好的选择性和较高的灵敏度。基于Allan Werle方差的系统长期稳定性评估分析表明，系统的检测限（LoD）为1.18 μL/L；当积分时间达到205 s时，系统能够实现0.08 μL/L的测量精度。最后，纸、棉花以及松木等容易产生阴燃的可燃物燃烧实验表明，所研制的传感器具有良好的早期火灾探测能力。

Abstract

A high-precision

high-sensitivity carbon monoxide (CO) sensor was developed for early fire detection. This sensor relied on a continuous wave distributed feedback (DFB) laser emitting at a wavelength of approximately 2.33 μm as an excitation source. A 2

Wavelength Modulation Spectroscopy (WMS) strategy was adopted to isolate complex

overlapping spectral absorption features associated with ambient pressure and to achieve excellent specificity and high detection sensitivity. Allan-Werle deviation analysis was used to evaluate the long-term performance of the CO sensor system. A Limit of Detection (LoD) of 1.18 parts per million by volume (μL/L) was achieved with a measurement precision of 0.08 μL/L for an optimal integration time of~205 s. The early fire detection of paper

cotton

and pine wood was conducted in the field

which verified the reliable and robust operation of the developed sensor.

关键词

Keywords

references

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