vibrálódrótos

Vibrálódrótos, meaning "vibrating wire" in Hungarian, refers to a type of sensor that utilizes a steel wire that is tensioned and vibrated at a specific frequency. This frequency is dependent on the tension applied to the wire. Changes in external conditions such as temperature, strain, or pressure can alter the tension of the wire, thereby changing its vibration frequency. A sensing coil detects this frequency, and this information is then converted into a digital signal.

These sensors are known for their robustness and stability, making them suitable for various demanding applications. They are commonly employed in geotechnical engineering for monitoring the performance of structures like dams, tunnels, bridges, and retaining walls. They can measure changes in stress and strain within concrete or soil, providing valuable data for structural health monitoring and safety assessments.

The principle of operation relies on the relationship between tension and the natural resonant frequency of a vibrating string or wire, famously described by Newton's law of vibrating strings. By accurately measuring the frequency, precise strain or force can be determined. Vibrálódrótos sensors are often favored for their long-term reliability, resistance to electromagnetic interference, and low power consumption. Their development has contributed significantly to advancements in civil engineering and structural monitoring technologies.