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Shape-Sensor for Large Objects






Like our "Cable-Like Shape-Sensor", this sensor system creates a three-dimensional model of the shape and spacial arrangement of an elongated object. This sensor is not as flexible as the Cable-Like Shape-Sensor but very precise for huge objects.

Every change of shape and special arrangement produce a change of the model correspondingly. The change of an object over time can be observed. Oscillations can be detected. Critical shape arrangements may be detected and stress analyses are feasible.




The sensing of shapes is accomplished by laser measuring sections integrated in tubes. The tubes can be connected to one another, so that for each application a suitable system can be configured. A special realization allows not only the detection of bending but also torsion. The configuration of the tubes is extendable, allowing the measurement of accelerations, gyro, magnetic field and pressure.

The sequential arrangement of the sensor segments is detected automatically and a corresponding three-dimensional model is created. The segments may be connected by angle pieces to fit the objects shape. The flexibility of the complete sensor system can be adapted by variation of the segment length.

The tubes have a diameter of 75mm and a range of length from 2-6m.






Large technical facilities may be monitored. Fatigue of material and overload are detectable. Maintenance intervals may be prolonged.


Deformation and properties of air flow may be detected and optimized. The detection of critical situations can be established robust and quickly.


For bridges a permanent surveillance and stress analysis can be realized. Monitoring can be done remotely, enabling central condition monitoring for this buildings. Inspection activities can be conducted more target-oriented. Maintenance costs can be reduced.



Buildings can be surveilled. The detection of wind load or seismic influences is feasible. The deformation of building corpus is measurable. This is often critical for historical buildings. For high rise buildings, the sensor system may be easily installed in an elevator shaft.


Project funding