光声池半径和背景气体种类对中红外SO<sub>2</sub>气体测量系统的影响

张晓星; 江俊杰; 张引; 胡隽宇; 李岩

doi:10.13296/j.1001-1609.hva.2026.01.025

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光声池半径和背景气体种类对中红外SO₂气体测量系统的影响

研究与分析 | 更新时间：2026-04-13

- 光声池半径和背景气体种类对中红外SO₂气体测量系统的影响
- Influence of Photoacoustic Cell Radius and Types of Background Gas on Mid-infrared SO₂ Measurement System
- 高压电器 2026年62卷第1期页码：198-206
- 作者机构：
  
  湖北工业大学新能源及电网装备安全监测湖北省工程研究中心，武汉　430068
- 作者简介：
  
  张晓星（1972—），男，教授，博士生导师，主要从事电气设备在线监测与故障诊断、绝缘状态评估、新型传感器技术以及SF6替代气体研究等方面的工作（E-mail：xiaoxing.zhang@outlook.com）。
  张引（1989—），男，副教授，主要从事电气设备光学检测技术研究等方面的工作（通信作者）（E-mail：yinz@hbut.edu.cn）。
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.01.025
  中图分类号：
- 收稿：2025-07-21，
  
  修回：2025-10-05，
  
  纸质出版：2026-01-16
- 稿件说明：
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张晓星, 江俊杰, 张引, 等. 光声池半径和背景气体种类对中红外SO₂气体测量系统的影响[J]. 高压电器, 2026,62(1):198-206.

ZHANG Xiaoxing, JIANG Junjie, ZHANG Yin, et al. Influence of Photoacoustic Cell Radius and Types of Background Gas on Mid-infrared SO₂ Measurement System[J]. High Voltage Apparatus, 2026, 62(1): 198-206.
张晓星, 江俊杰, 张引, 等. 光声池半径和背景气体种类对中红外SO₂气体测量系统的影响[J]. 高压电器, 2026,62(1):198-206. DOI： 10.13296/j.1001-1609.hva.2026.01.025.

ZHANG Xiaoxing, JIANG Junjie, ZHANG Yin, et al. Influence of Photoacoustic Cell Radius and Types of Background Gas on Mid-infrared SO₂ Measurement System[J]. High Voltage Apparatus, 2026, 62(1): 198-206. DOI： 10.13296/j.1001-1609.hva.2026.01.025.

摘要

光声池（photoacoustic cell，PAC）的结构优化是提高气体检测装置性能的关键之一。文中仿真模拟了多种半径PAC与背景气体的频率响应。结果表明，声压随着频率的增大而减小；背景气体的热容比越大，声压越大；半径越小，声压越大。此外，文中搭建了SO

检测平台进行实验验证。测量结果验证了光声（PA）信号随着频率的增加而减小。背景气体对PA信号有显著影响，PA信号强度顺序为He＞N

＞SF

，与仿真一致。以57.4 μL/L（ppm）SO

/He填充半径为3 mm的PAC在最佳调制频率下的信噪比为11.015，半径为4 mm和5 mm时的信噪比分别为8.147和6.55。并进一步对不同PAC进行体积分数标定和反演实验，分析发现3 mm的PAC效果最佳，其检测下限可达0.876 ppm，反演的相对误差平均值为1.645%。

Abstract

The structure optimization of photoacoustic cell (PAC) is one of the keys to improve the performance of gas detection device. In this paper

the frequency response of various radius PAC and background gas is simulated. The results show that the sound pressure decreases with the increase of frequency. The higher the heat capacity ratio of the background gas

the higher the sound pressure

the smaller the radius

the higher the sound pressure. In addition

in this paper a SO

detection platform is set up for experimental verification. The measurement results verify that the photoacoustic (PA) signal decreases with the increase of frequency. The background gas has a significant effect on the PA signal. The order of PA signal intensity is He＞N

＞SF

which is in agreement with the simulation. The signal-to-noise ratio of PAC filled with 57.4 μL/L (ppm) SO

/He with a radius of 3 mm at the optimal modulation frequency is 11.015

and the signal-to-noise ratios at the radius of 4 mm and 5 mm are 8.147 and 6.55

respectively. The concentration calibration and inversion experiments of different PACs are further carried out. It is found through analysis that the 3 mm PAC provides the best result

wit

h its detection limit reaching up to 0.876 ppm

and the average relative error of the inversion being 1.645%.

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光声池半径和背景气体种类对中红外SO2气体测量系统的影响

Influence of Photoacoustic Cell Radius and Types of Background Gas on Mid-infrared SO2 Measurement System

DOI：10.13296/j.1001-1609.hva.2026.01.025

摘要

Abstract

关键词

Keywords

references

光声池半径和背景气体种类对中红外SO₂气体测量系统的影响

Influence of Photoacoustic Cell Radius and Types of Background Gas on Mid-infrared SO₂ Measurement System