PORTABLE GAS DATA LOGGER BASED ON TEMPERATURE MODULATION OF A SINGLE MOS COMMERCIAL SENSOR

被引：2

作者：

Blanco Rodriguez, Andy ^{[1
]}

Jimenez Chacon, Juan ^{[1
]}

Noda Garcia, Frank Emilio ^{[1
]}

Carrillo de Albornoz, Alejandro Duran ^{[1
]}

Garcia Ramirez, Alejandro Rafael ^{[2
]}

机构：

[1] Univ la Habana, Lab Univ Caracterizac & Estruct Sustancia, Inst Ciencia & Tecnol Mat, Havana, Cuba

[2] Univ Vale Itajai, Lab Sistemas Embarcados, BR-88122000 Sao Jose, SC, Brazil

来源：

QUIMICA NOVA | 2013年 / 36卷 / 09期

关键词：

portable odorant data logger; odor detection; embedded system;

D O I：

10.1590/S0100-40422013000900027

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A simple, portable and low-cost system for odor detection was developed using a single MOS commercial sensor and a microcontroller. The temperature modulation technique was implemented applying a DC signal pulse to the sensor heater by a bipolar transistor. Two odorant profiles, ethanol and acetic acid vapors, were obtained and distinguished based on their amplitude versus time responses. Response for acetic acid was not reported by the sensor manufacturer. An ethanol vapor calibration curve was also obtained. Experimental data showed a potential behavior according to the theoretical equation of the MOS sensors. Values of logK=0.457 and alpha=-0.213 for a 95% confidence level were obtained.

引用

页码：1441 / 1446

页数：6

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