AIS aim is a robotized inclinometer measurement in standard inclinometer boreholes. The deep measurements have multiple applications, including: evaluating the rate of deep-seated ground deformation in landslide areas, evaluating the volume of deep-seated landslides and assessing landslide hazards. The AIS is composed by an electronic control manager, an inclinometer probe and an electric motor equipped with a high precision encoder for handling and continuous control of the probe in the borehole. The probe is automatically lowered into the borehole and traced to make measurements at predetermined elevations. The measurements are stored directly in the probe. During the cycle measurements the probe is independent without communications with the surface control unit. At the end of the measuring phase, data are transmitted via wireless to a surface central unit. This one processes data, and transmits the results to a remote servers for near-real time monitoring and further analysis. Thanks to the electronic control AIS is able to perform measurements with a high repeatability and with a revisit time that cannot be matched by a human operator.
AIS is able to perform measurements with a double reading approach (0 °/ 180°) providing very high quality data. The development of a battery-powered electronic microsystem (directly connected to the probe), made it possible to eliminate the signal transmitting cable linked to the surface processing system. The AIS uses only a small synthetic fiber cable (Dyneema®, Ø 2 mm) to support the probe and a low consumption micro-motor for its descent and ascent into the borehole. Thanks to its low consumption, the AIS can be powered by solar panels. AIS has a high measurement frequency (up to 6 ÷ 8 meas / day) with high discretization of the vertical (reading step of 50 cm); it is also possible to choose the starting measurement position. AIS is compatible with standard inclinometer tubes (from 1 to 120 meters) and it can be installed in a short time, removable and reusable. Its small size allows it to be stored in a standard fiberglass cabinet.
Italy