title: POIS, a Low Cost Tilt and Position Sensor: Design and First Tests.
abstract: An integrated sensor for the measurement and monitoring of position and inclination, characterized by low cost, small size and low weight, has been designed, realized and calibrated at the Geomatics Lab of the University of Calabria. The design of the prototype, devoted to the monitoring of landslides and structures, was aiming at realizing a fully automated monitoring instrument, able to send the data acquired periodically or upon request by a control center through a bidirectional transmission protocol. The sensor can be released with different accuracy and range of measurement, by choosing bubble vials with different characteristics. The instrument is provided with a computer, which can be programmed so as to independently perform the processing of the data collected by a single sensor or a by a sensor network, and to transmit, consequently, alert signals if the thresholds determined by the monitoring center are exceeded. The bidirectional transmission also allows the users to vary the set of the monitoring parameters (time of acquisition, duration of satellite acquisitions, thresholds for the observed data). In the paper, hardware and software of the sensor are described, along with the calibration, the results of laboratory tests and of the first in field acquisitions.
authors.affiliation: Civil Engineering Department, University of Calabria, Via Bucci Cubo 45B, 87036 Rende, Italy. g.artese@unical.it.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Artese
authors.affiliation: Civil Engineering Department, University of Calabria, Via Bucci Cubo 45B, 87036 Rende, Italy. michele.perrelli@unical.it.
authors.forename: Michele
authors.initials: M
authors.lastname: Perrelli
authors.affiliation: Department of Informatics, Modeling, Electronic and System Engineering-DIMES, University of Calabria, Via P. Bucci Cubo 42C, 87036 Rende, Italy. serena.artese@unical.it.
authors.forename: Serena
authors.initials: S
authors.lastname: Artese
authors.affiliation: Department of Informatics, Modeling, Electronic and System Engineering-DIMES, University of Calabria, Via P. Bucci Cubo 42C, 87036 Rende, Italy. sebastiano.meduri@gmail.com.
authors.forename: Sebastiano
authors.initials: S
authors.lastname: Meduri
authors.affiliation: Civil Engineering Department, University of Calabria, Via Bucci Cubo 45B, 87036 Rende, Italy. natalebrogno@tiscali.it.
authors.forename: Natale
authors.initials: N
authors.lastname: Brogno