离散半圆柱体电阻式气体传感器的研究

A study of discretized Semi-cylindrical Resistance-type gas sensor

气体传感器,作为一种先进的信息获取设备,在人们生产和生活中发挥着越来越大的作用。人们对其性能要求也越来越高,尤其是传感器的响应速度更是人们关注的重点。所以,本文提出了一种新型的气体传感器模型,即在连续平面敏感结构的基础上,将其离散化,成为离散半圆柱体阵列结构,根据平面和圆柱体扩散方程,分析了两者的响应时间和灵敏度,并进行比较,证明离散半圆柱体阵列敏感结构具有了更快的响应速度和更高的灵敏度。

Gas sensor, as an advanced information retrieval equipment, are becoming more and more widely used in people＇s daily lives and industrial production. The requirement for the response speed of gas sensors is beeoming higher and higher. A new type of sensitive structure model of gas sensor is therefore presented. Based on the traditional continuous fiat sensitive structure, the top half is discretized, and becomes discretized Semi-cylindrical array strueture. A diffusion equation of the Semi-cylindrical is then estab- lished, the respective response times and sensitivity of the gas sensors with new-typed and traditional sensitive strueture are analyzed and compared, leading to the conclusion that gas sensors with discretized Semi-cylindrical array sensitive structure has faster re- sponse speed and higher sensitivity.