Plug-and-Play Electronic Unit for MOS and Thermocatalytic Gas Sensors

Alexey Vasiliev,Ilia Shakhnovich,Oleg Shulgin,Sergey Merzlikin,Pavel Agafonov,Andrey Sokolov

doi:10.3390/proceedings1040603

Abstract

The electronic plug-and-play electronic unit for controlling the semiconductor and thermocatalytic sensors is described. This is a controller with standard UART interface, which maintain preset working temperature of the sensor, measures resistance of the sensing layer, makes linearization of the sensitivity curve, compensates ambient humidity. In the case of thermocatalytic sensor, it measures power necessary to heat sensing and reference elements of the sensor, and the difference in these two values of power is proportional to the gas concentration. The digital output signal contains information about gas concentration, working parameters of the sensor, sensor type, enabling plug-and-play operation mode.

Highlights

Introduction and MotivationMass application of metaloxide semiconductror (MOS) and thermocatalytic (TC) gas sensors is recently restricted by individual calibration of electronic units with these devices
In this work we developed the smart sensor units permitting the stabilization of temperature of sensing layer, data acquisition, calibration of the sensor, supplying information about type of sensor, target gas, standard interfacing of the unit and other possibilities necessary to provide plug-and-play regime of gas sensor operation
The goal of this work was the development of small sensor unit with very simple and robust connector for MOS and TC sensors

Summary

Introduction

Introduction and MotivationMass application of metaloxide semiconductror (MOS) and thermocatalytic (TC) gas sensors is recently restricted by individual calibration of electronic units with these devices. In this work we developed the smart sensor units permitting the stabilization of temperature of sensing layer, data acquisition, calibration of the sensor, supplying information about type of sensor, target gas, standard interfacing of the unit and other possibilities necessary to provide plug-and-play regime of gas sensor operation.

Objectives

Results

Conclusion