In the behavior monitoring process of the civil or hydro-energetic buildings like tunnels, bridges or dams, the vibrating wire transducer is very popular .
The vibrating wire transducer has three fundamental components: the vibrating element which is a tensioned steel wire, a drive coil and a signal capture coil.
The operation principle of the vibrating wire transducer is based on the dependency of the wire's natural vibration frequency and the wire's tension , .
The operation principle of the vibrating wire transducer is similar with a piano wire .
THE EQUIVALENT CIRCUIT OF THE VIBRATING WIRE TRANSDUCER
The proposed electrical model for the vibrating wire transducer uses the equivalent circuit of the driving coil.
The vibrating wire transducer and its electrical model are analyzed from both behavioral and bidirectional energy transfer points of view.
In this paper, the vibrating wire transducer was electrically modeled as two coupled resonant circuits.
 Viman L., Lungu S., "Electrical coupled model for two coils vibrating wire transducer", 2010 33rd International Spring Seminar on Electronics Technology, Warsaw, Poland, 2010, pp.
For the vibrating wire transducers used for hydro-technical building monitoring, the water infiltration is a common phenomenon.