Pubblicazione scientifica

A Portable Optical Sensor for Sea Quality Monitoring

FILONE TECNOLOGICO	TEMA
produzione e raccolta	sistemi di gestione/misura/monitoraggio ausiliari alla produzione e raccolta

RIASSUNTO

In this paper, we propose the modeling, the design, and the development of a high sensitivity cheap optical sensor for chlorophyll a and water transparency based on chlorophyll fluorescence and turbidity due to scattering for in situ monitoring of trophic status of seawater. The sensor is designed in order to detect very low chlorophyll concentration and low level turbidity by means of a numeric lock-in amplifier technique, with a common resonant input stage. The sensor is designed and implemented by considering a proper layout suitable for a good light source coupling. The presented prototype integrates on a board two LED sources emitting red and blue light to measure both chlorophyll-a and turbidity. The system assures a chlorophyll sensitivity of 1 mV/2.5 μg/l, a detectivity of 0.2 μg/l, with a 40-dB minimum attenuation of all the other light sources. It is attractive with respect to commercial systems because it guarantees considerable reliability with low manufacturing costs.

DATA

Data di pubblicazione: 17/07/2014

AUTORI

FILIPPO ATTIVISSIMO
CARLO GUARNIERI CALO CARDUCCI
ANNA MARIA LUCIA LANZOLLA
ALESSANDRO MASSARO
MARIA ROSARIA VADRUCCI

ENTE DI AFFERENZA

DEPT ELEC & INF ENG POLYTECH OF BARI BARI ITALY
CTR BIO MOL NANOTECHNOL IIT LECCE LECCE ITALY
REGIONAL ENVIRON PROTECTION AGENCY LECCE ITALY

RIVISTA

IEEE Sensors Journal (Volume: 15, Issue: 1, Page(s): 146-153)

IMPACT FACTOR

3,780

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