Automatic measuring system for monitoring the stability of a structure

Automatic measuring system for monitoring the stability of a structure, like a bridge or a viaduct, comprising: - a set of measuring elements (100), each of them being placed at a respective critical point of the same structure, and each measuring element (100) further comprising an electrolevel , able to detect a tilt angle in respect to a reference plane; - an electronic control circuit that further comprises: means for data acquisition of data coming from said respective electrolevels (104), and concerning measurements of tilt angles; means for reconstruction of the deformation outline, in respect to a reference outline; means for storage of a data base; and means for transmission of the same data, in real time , to a remote control unit, characterized in that: - each of said measuring elements (100) further comprises a supporting structure, composed of a rigid elongated bar (101) that includes: at one end, an articulated joint (102) achieving a rotary degree of freedom, in respect to a transversal pivot (103) of reference; and at the other end, a mobile base placed on wheels (107), achieving a translatory degree of freedom of the same bar (101) in the longitudinal direction, so that each tilt measurement is detected, as an average value, in respect to the local roughness of surface, when the measuring element is placed on unprocessed and non-linear surfaces (108), and wherein the same tilt measurement is not affected by phenomena of thermal expansion of materials.