GAS-DEPENDENT RESPONSE IN THE TEMPERATURE TRANSIENT OF SNO2 GAS SENSORS
GAS-DEPENDENT RESPONSE IN THE TEMPERATURE TRANSIENT OF SNO2 GAS SENSORS
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DOI：
10.1016/0925-4005(92)80213-h
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发表时间：
1992-10-01
影响因子：
8.4
通讯作者：
MURATA, H
中科院分区：
文献类型：
--
作者：
HIRANAKA, Y;ABE, T;MURATA, H
本文描述了各种类型的SnO2气体传感器在表面温度变化引起的瞬态电导模式中所观察到的气体依赖响应。为了气体识别的目的，对这些传感器进行了研究。本研究的潜在目标是如何从单个气体传感器中最大程度地提取特定气体的信息。在这种情况下，使用温度瞬态方法。加热器电压的阶梯式变化引起传感器的电导变化，从而产生依赖于气体的瞬态响应。在清洁空气中测量时，我们检查瞬态响应除以电导响应后的瞬态响应，并观察到独特的峰值。峰值时间取决于特定的气体种类。因此，这种方法将有助于鉴别气体种类。本文还研究了几种类型的气体传感器的特性。我们观察到，相同类型的传感器表现出相似的气体依赖特性。其他类型的传感器显示不同的峰值延迟时间。然而，它们都有依赖气体的共同特征。
This paper describes the gas-dependent response observed in the transient conductance patterns caused by surface temperature changes in various types of SnO2 gas sensors. These sensors have been investigated for the purpose of gas identification. The underlying objective of this research is how to extract gas-specific information to the fullest extent from a single gas sensor. In this case a temperature transient method is used. A step-like change in its heater voltage causes a conductance change in the sensor, resulting in a gas-dependent transient response. We examine the transient responses after dividing them by the conductance response when measured in clean air, and distinctive peaks are observed. The peak times depend on the particular gas species. Therefore this method will be useful for identifying gas species. The characteristics of several types of gas sensor have also been studied. We observe that the same types of sensor show similar gas dependency characteristics. Other types of sensor show different peak delay times. However, they all have gas-dependent features in common.