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基于双路径赫里奥特细胞的双通道传感器,用于基于双路径赫里奥特细胞的高精度甲测量

Hongliang Ma¹, Shiqi Wang¹, Gaoxuan Wang²

¹School of Electronic Engineering and Intelligent Manufacturing, Anqing Normal University, Anqing 246133, China.

|October 18, 2024

概括

一个新的甲 (CH4) 传感器使用双通道系统和信号平均值来实现高精度 (21 ppb) 和快速响应时间. 这种增强的甲检测技术为大气监测提供了更好的稳定性.

科学领域:

环境科学环境科学
分析化学分析化学
传感器技术传感器技术

背景情况:

准确的甲 (CH4) 监测对于气候变化研究和工业安全至关重要.
现有的传感器在精度,响应时间和稳定性方面存在局限性.

研究的目的:

开发一个高精度,快速响应的甲传感器.
通过一种新的双通道方法来提高甲检测性能.

主要方法:

开发使用双通道多通道电池 (DP-MPC) 的双通道甲传感器.
实施一种新的方法,将平均双通道度信号与优化探测器增益相结合.
在DP-MPC中利用吸收路径长度约为95.8米和35.8米.
艾伦偏差分析用于评估测量精度和稳定性.

主要成果:

优化的探测器增益和双通道平均值实现了21ppb的测量精度在2ppm的CH4与1s的集成时间.
双通道的平均精度是单通道的1.4倍 (31ppb和30ppb).
双通道平均响应速度大约是单通道响应速度的两倍.
持续的室外大气CH4测量显示了传感器的稳定性和可靠性.

结论:

开发的双通道甲传感器显著提高了检测性能.
新的信号平均和增益优化方法提高了精度和响应速度.
该传感器适用于稳定可靠的大气甲监测.

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