Guardian Case History

Volterra



It is located on the top of a high hill (555 m.a.s.l.), in an extraordinary panoramic position between the Cecina and Era valleys.Volterra has a vast territory, with a rich patrimony of historical, natural and artistic resources. The common objective is to contribute to protecting the environment, the historical patrimony and the people’s safety. The site under consideration is located in “Via comunale della frana”, in particular the wall that runs along the side of San Giusto, it reaches 464 m.a.s.l. starting from 417 m.a.s.l..The site is affected by two landslides that interess the outer border of a morphological terrace, its top have calcarenitic lands. The evolution of the two landslides is equivalent, they are rockfalls with sliding/overturning of the single blocks. The foot of the landslide is 80 meters below the staircase that connect the street “Via comunale della frana” with the houses above it, the face of landslide measuring 16 meters, the gap between the road and the top of the landslide measuring 22 meters. The objective, in terms of protection of the landscape, is to constantly monitor the physical parameters of the soil and the environment with The Guardian® platform. This is able to contantly provide updated data to a remote server and alert in case of thresholds exceeding. The system of The Guardian® , thanks to its wireless sensor network, is able to continuously provide data of the state of the landslide, the purpose is to promptly alert (with e-mail or sms) the local authority and the technicians when danger thresholds are exceeded; in this way, the area can be evacuated and the safety of people is guaranteed. Simultaneously with the exceeding of the thresholds, the system activates a red light at both ends of the street below. The alert threshold is variable and depends on the type of risk monitored; however is defined by geologists.


Genova



Genova is the largest city of Liguria is composed of a thin coast and by high hills and mountains.It is one of the 15 metropolitan italian cities, and it is the earth of Liguria. That incorporates a hinterland Natural Oltregiogo in Liguria.In its historical center, there are the Rolli’s Palaces, which have been declared World Heritage Site by UNESCO. Based on the experience of 2011 was required to The Guardian, a solution for the control of one of the thirty-five landslides currently monitored by manual and periodicals interventions by the Protezione Civile. This landslide will be identified with the name “Rio Lago Lungo N.22”. The right side of the torrent Bisagno is affected by a sliding landslide, this has a rapid and vivacious movement and it has caused some important cracks in the walls and in the buildings. At the retaining wall of Via San Felice, there are particularly active cracks that have caused serious damage to the viability. Similarly to the nomenclature used by “Protezione Civile” this cracks are defined with the name “Lesione N.1-2-2b”. This landslide put in danger houses, streets and terracing; in fact there are some breaks through walls and damage to the sidewalks that are very inclined. The system of The Guardian® , thanks to its wireless sensor network, is able to continuously provide data of the state of the landslide, the purpose is to promptly alert (with e-mail or sms) the local authority and the technicians when danger thresholds are exceeded; in this way, the area can be evacuated and the safety of people is guaranteed. The alert threshold is variable and depends on the type of risk monitored; however is defined by geologists.


Hera



HERA (Holding Energy Resources Environment) is a leading multi-utility in Italy and operates in 265 municipalities. Provides energy (gas, electricity), water (water, sewage and water treatment) and environmental (waste collection and disposal) services to about 4 million people. Hera Group requested us the installation of a Galileo i-Fire system for fire risk monitoring in an area used for waste treatment. Our proposal was to install a thermal imaging camera connected to the server and to integrate it with software modules needed for the analysis of the images received. The camera was positioned in such a position as to have the best prospect area of interest. For example the image in Figure refers to the front end of a waste treatment in the period June 2012. The thermal imaging camera technology represents the evolution of the infrared thermometers (IR) solution because is able to accurately analyze whole large areas in opposition to the ability of a thermometer, that can focus only on a single point. The thermal imaging camera installed has an image resolution of 320 x 256 pixels and can therefore be likened to the use of contemporary 81.910 IR thermometers. The thermal imaging camera is characterized by low energy consumption and is ideal for monitoring fires in a large area thanks to a focal length of 9 mm, a FOV (field of view) to 45° (H) x 37° (V) and an image frequency of 60 Hz. Its features allow to frame an area, perpendicular to the lens, of 1,357 square meters located 50 m away with a spot definition from 0.13m. The technology behind the solutions with camera embedded, is natively able to measure one of the elements necessary for the development of a fire: the heat. This sensor is therefore very suitable for the purposes of monitoring and the alert fires in landfills. Also in the likely event of fire development deep under layers of waste, is physically certain that the heat generated arrives by conduction or convection heat to a surface point detectable by the camera. The data coming from the thermal imaging camera are processed by a software based on complex CV (Computer Vision) algorithms that will generate 3D mathematical models of signals acquired from the thermal imaging camera corresponding to the levels of temperature read by the infrared sensor. The image analysis software allows to monitor areas evolving over time and permit to move the camera without affecting the effectiveness of the monitoring system.

Pompei



Pompei is globally famous, his excavations are the only ones in the world that bring to the light a Roman town, where the time has stopped at a remote morning of 79 d.C., when the Vesuvio has erupted. In its historical center, there are the Rolli’s Palaces, which have been declared World Heritage Site by UNESCO. With over two million visits per year is the largest archaeological site in Italy. The first site under consideration is the area where are the remains of the Tempio di Venere, which is located between Porta Marina and the Basilica. This area is affected by a slip of the soil that urging the walls which already have sealing and collapse problems. The monitoring activity in this area has the objective to verify the «structural» conditions of the fragments of the retaining and perimetral walls. It is evaluated the inclinations and the extensions of the cracks in the walls. The second site under examination, is Casti Amanti that takes its name to the paintings that show lovers gathered. It is a Home–shop, with a bakery on the side of the road and a home inside. Its not a common house of Pompei, but an educational workshop where are working archaeologists and restorers. On this area is necessary to monitor the status of the building structure, but especially the countryside around and above (several meters) on its two sides. This creates a pressure effect on the house. The system of The Guardian® , thanks to its wireless sensor network, is able to continuously provide data of the state of the walls structure, the purpose is to promptly alert (with e-mail or sms) the local authority and the technicians when danger thresholds are exceeded; in this way the area can be secured. In the monitoring phase , Geologists of the Ministry of Culture can also analyze the data collected and evaluate the stability of the structures, the fronts of sliding and take the proper procedures for the stabilization of sites.