Impiego dei router cellulari nella rete sismica permanente, rete sismica mobile e nella rete di telecamere di sorveglianza dell’INGV-OE

Abstract

Transmission systems play a crucial role in the data acquisition chain of instrumental networks in many areas, such as civil, military or scientific research. The usability of the data is even more important when these are closely linked to phenomenologies that have immediate repercussions on the safety of the population, or when these are generated for civil protection purposes. In this work we will describe how and why we arrived at the use of cellular modems / routers for the transmission and acquisition of video and geophysical (seismic and GPS) signals in the monitoring and surveillance networks of the INGV Osservatorio Etneo, from the experimentation, started in 2016, up to their greater diffusion today, and how this has allowed the realization of installations in areas often difficult to access or characterized by absence of radio visibility, often reducing their power consumption and providing them with more than sufficient bandwidth to implement interactivity with the installed devices and the transmission of various types of geophysical signals. In order to have a complete picture, the operations carried out as well as the software specifically designed to automate some operations through the potential offered by the routers and to allow an effective and efficient transfer of the produced data will be described, to then show some checks on the continuity of operation of the first implementations in the permanent seismic network in order to finally decide on the efficiency and stability of the systems used. The uses in the field of video streaming and their impact on the expansion of the volcanic areas observed will also be described.