Service Communautaire d'Information sur la Recherche et le Développement - CORDIS

Adaptation of innovative sensors

In civil engineering piezo-electric accelerometers are successfully used for sensitive measurements of the structures response to dynamic seismic loads. Static inclinometers based on mass-spring technology enable the high precision detection of changes in its inclination. The transfer functions of the sensors are well known and there exists long-time experience concerning the adaptation to buildings.

There exists very poor experience adapting these sensors directly to the soil to observe soil-mechanic events. Especially the difficult environment (adaptation problems in loose material) and the significant detection of extreme slow rates of motion represent high challenges. The instrumentation part of OASYS provides the opportunity to investigate the potential of the sensors in this non-standard scenario.

With regard to further research activities (and other possible non-standard applications) the main goals are to get practical experiences with the sensors integration and referencing within the instrumentation network, to study its long-term characteristics and disturbance influences and to handle the expected enormous amount of collected data.
The realization of these tasks requires the sensors integration into geotechnical models and the investigation of its properties using parametric and non-parametric calibration methods. It is also planned to develop special filter strategies for time-series with very bad signal-noise ratios and establish an event-based data logging.

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