Vibroacoustic examinations offered by Adaptronica include measurements, recording and analysis of noise and vibrations generated by various sources. Vibroacoustic examinations are performed for diagnostic purposes as well as for assessment of harmful influence of noise and vibrations on structures, machines and human health.
Vibroacoustic services include:
Adaptronica offers systems for condition monitoring of engineering structures such as bridges, viaducts, towers, warehouses. The company has developed and installed customized systems which perform measurements, recordings, signal analysis and remote transmission of data. The purpose of the system is to monitor the condition of a structure by examining quantities like acceleration, deflection, strain, angle of inclination as well as environmental parameters such as temperature, humidity and atmospheric pressure. The system provides both local storage of the measured signals for archiving purposes but also on-line, remote viewing of parameters processed in the analysis. In order to increase the reliability of the systems, Adaptronica utilizes hardware by renowned world brands such as Bruel & Kjaer or National Instruments. Depending on the needs and expectations of the client, systems are always configured individually.
An example of a system implemented by Adaptronica on an engineering structure is the system for monitoring of acceleration levels on suspension rods of the railway viaduct in Huta Zawadzka (Fig. 1 above). Bruel & Kjaer transducers, National Instruments controller and measurement cards, and Telium wireless transmission module were used.
The following parameters of the measurement system were adopted:
Sensors were mounted in a non-invasive way on some suspension rods of the bridge. In order to obtain the degree of environmental protection IP65 for the measurement system, the cables were placed in protective coatings and the sensors were located in hermetic housings.
Measured acceleration signals were stored in the local memory of the system for one month. Every five minutes, the selected measurement results, such as the maximum and average (RMS) values, were sent to the server.
The user interface designed for the system (Fig. 2 above) is capable of:
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