A simple interface circuit for micromachined gas sensors

This paper describes a microcontroller-based interface circuit for chemoresistive metal-oxide gas sensor dedicated to environmental pollution detection. The circuit controls the sensor operating temperature, measures the sensing layer resistance, offering also a user-friendly interface. The main sys...

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Veröffentlicht in:	Sensors and actuators. A. Physical. 2003-12, Vol.109 (1), p.131-136
Hauptverfasser:	Baroncini, M., Placidi, P., Cardinali, G.C., Scorzoni, A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Control Exact sciences and technology Gas microsensor General equipment and techniques Instruments, apparatus, components and techniques common to several branches of physics and astronomy Interface circuit Measurement Microcontroller Physics Sensors (chemical, optical, electrical, movement, gas, etc.) remote sensing
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Beschreibung
Zusammenfassung:	This paper describes a microcontroller-based interface circuit for chemoresistive metal-oxide gas sensor dedicated to environmental pollution detection. The circuit controls the sensor operating temperature, measures the sensing layer resistance, offering also a user-friendly interface. The main system features are: wide dynamic measurement range, self-calibration capability, built-in RS-232 interface and two different methodologies of data acquisition, namely constant and pulsed temperature modes.
ISSN:	0924-4247 1873-3069
DOI:	10.1016/S0924-4247(03)00348-0