title: Colorimetric detection of hazardous gases using a remotely operated capturing and processing system.
abstract: This paper presents an electronic system for the automatic detection of hazardous gases. The proposed system implements colorimetric sensing algorithms, thus providing a low-cost solution to the problem of gas sensing. It is remotely operated and it performs the tasks of image capturing and processing, hence obtaining colour measurements in RGB (Red-Green-Blue) space that are subsequently sent to a remote operator via the internet. A prototype of the system has been built to test its performance. Specifically, experiments have been carried out aimed at the detection of CO, CO2, NO, NO2, SO2 and formaldehyde at diverse concentrations by using a chromogenic array composed by 13 active and 2 inert compounds. Statistical analyses of the results reveal a good performance of the electronic system and the feasibility of remote hazardous gas detection using colorimetric sensor arrays.
authors.affiliation: Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Unidad Mixta Universidad Politécnica de Valencia - Universidad de Valencia, Camino de Vera s/n, 46022 Valencia, Spain. Electronic address: romonrob@etsid.upv.es.
authors.forename: Roberto
authors.initials: R
authors.lastname: Montes-Robles
authors.affiliation: Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Unidad Mixta Universidad Politécnica de Valencia - Universidad de Valencia, Camino de Vera s/n, 46022 Valencia, Spain; CIBER de Bioingeniera, Biomateriales y Nanomedicina (CIBER-BBN), Spain. Electronic address: mamopon1@upvnet.upv.es.
authors.forename: María Esperanza
authors.initials: ME
authors.lastname: Moragues
authors.affiliation: Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Unidad Mixta Universidad Politécnica de Valencia - Universidad de Valencia, Camino de Vera s/n, 46022 Valencia, Spain; CIBER de Bioingeniera, Biomateriales y Nanomedicina (CIBER-BBN), Spain. Electronic address: jvivanco@dpi.upv.es.
authors.forename: José-Luis
authors.initials: JL
authors.lastname: Vivancos
authors.affiliation: Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Unidad Mixta Universidad Politécnica de Valencia - Universidad de Valencia, Camino de Vera s/n, 46022 Valencia, Spain. Electronic address: jibanyez@eln.upv.es.
authors.forename: Javier
authors.initials: J
authors.lastname: Ibáñez
authors.affiliation: Signal Theory & Communications Department, Escuela Técnica Superior de Ingeniería y Sistemas de Telecomunicación, Universidad Politécnica de Madrid - Campus Sur, Carretera de Valencia km 7, 28031 Madrid, Spain. Electronic address: rfraile@ics.upm.es.
authors.forename: Rubén
authors.initials: R
authors.lastname: Fraile
authors.affiliation: Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Unidad Mixta Universidad Politécnica de Valencia - Universidad de Valencia, Camino de Vera s/n, 46022 Valencia, Spain; CIBER de Bioingeniera, Biomateriales y Nanomedicina (CIBER-BBN), Spain. Electronic address: rmaez@qim.upv.es.
authors.forename: Ramón
authors.initials: R
authors.lastname: Martínez-Máñez
authors.affiliation: Centro de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Unidad Mixta Universidad Politécnica de Valencia - Universidad de Valencia, Camino de Vera s/n, 46022 Valencia, Spain. Electronic address: egarciab@eln.upv.es.
authors.forename: Eduardo
authors.initials: E
authors.lastname: García-Breijo
keywords: Gas detector; Image colour analysis; Remote sensing