引言: 半导体气体传感器是建立在下列物理现象的基础上,即半导体表面吸附气体后,半导体的电导会发生改变。半导体气体传感器用途很广。例如:用来检测天然气的泄漏,co浓度,汽车排出的废气成份的分析等等, 半导体气体传感器的优点是体积小电路简单,缺点是对环境温度和湿度比较敏感,所以运用时漂移大,稳定性差。本文主要通过介绍日本大阪 Figavo公司生产的＃711,＃812,＃813,＃815,＃911五种氧化锡传感器,来了解传感器 Introduction: The semiconductor gas sensor is based on the following physical phenomena, that is, the surface of the semiconductor gas adsorption, the conductivity of the semiconductor will change. Semiconductor gas sensors have a wide range of uses. For example: to detect natural gas leaks, co concentration, the exhaust gas composition of the vehicle analysis, etc., semiconductor gas sensor has the advantage of small size circuit is simple, the disadvantage is more sensitive to ambient temperature and humidity, so the use of large drift, stable Poor sex. In this paper, five kinds of tin oxide sensors (# 711, # 812, # 813, # 815 and # 911) manufactured by Figavo Co., Ltd. in Osaka,