Research and fabrication of aerosol concentration detector based on laser scattering principle

JIA Ribo; LI Xin; HOU Chuncai; XU Yajiao

doi:10.13873/J.1000-9787(2021)09-0085-02

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Research and fabrication of aerosol concentration detector based on laser scattering principle

更新时间：2025-09-11

- Research and fabrication of aerosol concentration detector based on laser scattering principle
- Issue 9, Pages: 85-86+89(2021)
- 作者机构：
  
  中国船舶集团公司第七一八研究所
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2021)09-0085-02
  CLC： X851;TN249
- Published：2021
- 稿件说明：
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JIA Ribo, LI Xin, HOU Chuncai, et al. Research and fabrication of aerosol concentration detector based on laser scattering principle[J]. 2021, (9): 85-86+89.
DOI：

JIA Ribo, LI Xin, HOU Chuncai, et al. Research and fabrication of aerosol concentration detector based on laser scattering principle[J]. 2021, (9): 85-86+89. DOI： 10.13873/J.1000-9787(2021)09-0085-02.

摘要

为实现大气环境中气溶胶浓度的高精度实时在线监测

基于激光散射原理提出一种气溶胶浓度实时检测的方法

并利用STM32单片机设计了一种气溶胶浓度检测系统。通过检测某时间段恒定流量下气溶胶粒子散射到光探测器敏感面的光脉冲幅度分布

反演该时段的气溶胶浓度

并利用串口将浓度结果发送到显示屏显示。实验表明:系统对气溶胶浓度的检测具有精度高、响应快、重复性好、成本低廉等特点

为大气环境中的气溶胶浓度实时在线检测提供了有效解决方案。

Abstract

In order to achieve high-precision

real-time

on-line monitoring of environmental aerosol concentration

a real-time detection method of aerosol concentration is proposed based on the principle of laser scattering

and an aerosol concentration detection system is designed by using STM32 micro control unit（MCU）.By detecting the light pulse distribution of aerosol particles scattering on the sensitive surface of photodetector at a constant flow rate in certain period of time

the aerosol concentration in this period is retrieved

and the concentration results are displayed on the display screen through the serial port.Experimental result shows that the system has the characteristics of high precision

good repeatability and low cost

which provides an effective solution for aerosol concentration detection in the atmospheric environment.

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