Smell selective gas sensor with modulation heating
Smell selective gas sensor with modulation heating
复制标题
带调制加热功能的气味选择性气体传感器
DOI：
10.1109/icsens.2004.1426442
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
S. Okita
中科院分区：
文献类型：
--
作者：
A. Fujimoto;S. Okita
提出了一种利用SnO/SUB_2/气体传感器进行气味识别的新方法。为了提高传感器的选择性，我们测量了几种不同形状的电压对传感器升温的响应。三角脉冲电压对加热响应的延迟时间与酒精气味的延迟时间不同，且与三角脉冲的上升速度有关。上升速度为43 mV/s的三角脉冲对各种酒精气味的延迟时间差最大。在甲醇和丙醇的情况下，差异达到了大约12秒。这些结果表明，利用调制加热的SnO/SUB_2/气体传感器可以实现气味选择性传感器，例如向加热器提供三角脉冲。
We propose a new method to distinguish smells using an SnO/sub 2/ gas sensor. We have measured the sensor response on heating up with several shaped voltages to improve its selectivity. The delay time of the response on heating by a triangular pulse voltage was different from that of alcoholic smells, and depended on the rise velocity of the triangular pulse. The triangular pulse with a rise velocity of 43 mV/sec gave us the largest delay time difference for various alcoholic smells. In the case of methanol and propanol, the difference reached around 12 sec. These results show a smell selective sensor can be realized using a SnO/sub 2/ gas sensor with modulation heating, such as supplying a triangular pulse to the heater.