Sensor Review ( IF 1.6 ) Pub Date : 2021-03-22 , DOI: 10.1108/sr-03-2020-0061 Yong Pan , Qin Molin , Tengxiao Guo , Lin Zhang , Bingqing Cao , Junchao Yang , Wen Wang , Xufeng Xue
Purpose
This paper aims to give an overview about the state of wireless passive surface acoustic wave (SAW) gas sensor used in the detection of chemical vapor. It also discusses a variety of different architectures including delay line and array sensor for gas detection, and it is considered that this technology has a good application prospect.
Design/methodology/approach
The authors state the most of the wireless passive SAW methods used in gas sensing, such as CO2, CO, CH4, C2H4, NH3, NO2, et al., the sensor principles, design procedures and technological issues are discussed in detail; their advantages and disadvantages are also summarized. In conclusion, it gives a prospect of wireless passive SAW sensor applications and proposes the future research field might lie in the studying of many kinds of harmful gases.
Findings
In this paper, the authors will try to cover most of the important methods used in gas sensing and their recent developments. Although wireless passive SAW sensors have been used successfully in harsh environments for the monitoring of temperature or pressure, the using in chemical gases are seldom reported. This review paper gives a survey of the present state of wireless passive SAW sensor in gas detection and suggests new and exciting perspectives of wireless passive SAW gas sensor technology.
Research limitations/implications
The authors will review most of the methods used in wireless passive SAW sensor and discuss the current research status and development trend; the potential application in future is also forecasted.
Originality/value
The authors will review most of the methods used in wireless passive SAW sensor and discuss the current research status and development trend; the potential application in future is also forecasted.
中文翻译:
气体传感中的无线无源表面声波(SAW)技术
目的
本文旨在概述用于化学蒸气检测的无线无源表面声波(SAW)气体传感器的状态。它还讨论了各种不同的体系结构,包括用于气体检测的延迟线和阵列传感器,并且认为该技术具有良好的应用前景。
设计/方法/方法
作者陈述了用于气体传感的大多数无线无源声表面波方法,例如CO2,CO,CH4,C2H4,NH3,NO2等。,详细讨论了传感器原理,设计程序和技术问题;还总结了它们的优缺点。总之,它为无线无源声表面波传感器的应用提供了前景,并提出了未来的研究领域可能在于对多种有害气体的研究。
发现
在本文中,作者将尝试介绍气体传感中使用的大多数重要方法及其最新发展。尽管无线无源声表面波传感器已在恶劣的环境中成功用于监视温度或压力,但很少报告使用化学气体。本文概述了无线无源声表面波传感器在气体检测中的现状,并提出了无线无源声表面波气体传感器技术的新观点。
研究局限/意义
作者将回顾无线无源声表面波传感器中使用的大多数方法,并讨论当前的研究现状和发展趋势;还预测了未来的潜在应用。
创意/价值
作者将回顾无线无源声表面波传感器中使用的大多数方法,并讨论当前的研究现状和发展趋势;还预测了未来的潜在应用。