Title :
Sigma-delta processing in multisensor systems for carbon monoxide detection
Author :
Liberali, Valentino ; Maloberti, Franco ; Tonietto, Davide
Author_Institution :
Dipartimento di Elettronica, Pavia Univ., Italy
Abstract :
This paper presents a circuit to measure carbon monoxide concentration. Signals from three sensors are combined using sigma-delta processing to compensate for relative humidity and interfering gases. Appropriate circuit techniques are used to reduce offset and flicker noise in MOS amplifiers
Keywords :
carbon compounds; flicker noise; gas sensors; sensor fusion; sigma-delta modulation; CO; MOS amplifier; carbon monoxide detection; circuit technique; concentration measurement; flicker noise; multisensor system; offset; sigma-delta processing; 1f noise; Circuits; Delta-sigma modulation; Gas detectors; Gases; Humidity; Multisensor systems; Signal generators; Signal processing; Thin film sensors;
Conference_Titel :
Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3073-0
DOI :
10.1109/ISCAS.1996.541980
