At present, numerous monitoring systems are used for infrastructures such as visual inspection, topographic and photogrammetric methods, sensors based on transmission of electrical signals… Many of these techniques have various disadvantages that sometimes make them only suitable for the local inspection of an area of the structure, limited only to making instantaneous measurements or not being applicable in certain scenarios. To these are added other aspects such as the complexity of its use, its increased sensitivity to environmental factors or the high costs of operation and maintenance.
Faced with these systems is the DFOS (Distributed Fiber Optic Detection) system that allows real-time measurements at thousands of points along a fiber optic cable, allowing measurements of continuous temperature, acoustic and deformation profiles, both in time and space.