Performance Evaluation of a Low-Cost Sensing Unit for Seismic Applications: Field Testing During Seismic Events of 2016-2017 in Central Italy

Pierleoni, Paola; Marzorati, S.; Ladina, Chiara; Raggiunto, Sara; Belli, Alberto; Palma, Lorenzo; Cattaneo, M.; Valenti, Salvatore

doi:10.1109/jsen.2018.2850065

Cited by 22 publications

(19 citation statements)

References 21 publications

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“…4 NUMERICAL SIMULATION In order to verify the ability of the vibration analysis algorithm to extract the evolution in time of a vibration from the radar trace, a Matlab simulation was first performed. In order to represent a realistic trend, the data of a real earthquake, which occurred in Perugia on 30 October 2016, acquired through seismic accelerometers, were taken into consideration [7]. On the basis of the acceleration data, the displacement signal, that is the entity of the vibration, was obtained through a double integration.…”

Section: The Fmcw Radarmentioning

confidence: 99%

Automotive Radar Application for Structural Health Monitoring

Gambi

Ciattaglia

Santis

2019

WIT Transactions on the Built Environment

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Monitoring of communication and residential infrastructures, such as buildings, bridges and tunnels, has always been important to ensure the safety of citizens. In particular, it is of interest to verify the level of mechanical stress to which bridges and buildings are subjected during earthquakes, measuring the oscillations that the structure undergoes during the seismic event, in order to verify the overcoming of safety thresholds, in which stability may be impaired. In this paper the mmWave radars designed for the automotive world is taken into account, since it allows high precision measurements at a relatively low cost. mmWave radars are able to detect vibrations of the order of tens of microns and, therefore, are very useful for monitoring buildings. Furthermore, using MIMO (Multiple Input Multiple Output) mmWave radars, it is possible to implement the Beamforming technology for the spatial shaping of the radio beam, in order to detect more targets simultaneously. In this way it is possible to monitor multiple buildings or structures simultaneously, or different parts of the same structure with a single sensor. The objective of the present work is to show the applicability of automotive radar to the measurement of oscillations suffered by buildings and bridges, in order to be used as a monitoring tool in the event of earthquakes. Results of software simulations, laboratory test and real measurements on infrastructures are provided.

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Section: The Fmcw Radarmentioning

confidence: 99%

Automotive Radar Application for Structural Health Monitoring

Gambi

Ciattaglia

Santis

2019

WIT Transactions on the Built Environment

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“…According to these guidelines, a low-cost sensing unit for seismic applications, based on MEMS accelerometers, performed a long series of tests and was compared with a reference station (Pierleoni et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…For all these reasons, micro accelerometers (Kavitha et al, 2012(Kavitha et al, , 2016 and calibration methods (D'Emilia et al, 2018a, b) have been specifically designed for the low-frequency range, but they are limited to the amplitude evaluation. The phase evaluation is important in such applications, in which the overlapping effects of the waves can produce very different consequences (Pierleoni et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…It should to be pointed out that many components exist in the measuring chain to be characterized from a dynamic point of view, in particular at frequencies near 0 Hz. A four-pole Butterworth high-pass filter with a cut-off frequency equal to 0.2 Hz is used in Pierleoni et al (2018), to better calculate the so-called "strong-motion" parameters for characterization of an earthquake starting from acceleration data; in this way the problems in the integration of data are reduced.…”

Section: Introductionmentioning

confidence: 99%

“…Despite this requirement, even though a calibration is done, information about sensor behaviour in the very low frequency (near 0 Hz) range is not completely exhaustive, in particular for the phase shift (Lu et al, 2018;Pierleoni et al, 2018). That problem could result in a reduction in the measuring range of the earthquake monitoring station, in terms of measurable magnitude (Pierleoni et al, 2018). The working principle could be made useless (Abir et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Amplitude–phase calibration of tri-axial accelerometers in the low-frequency range by a LDV

D’Emilia¹,

Gaspari²,

Natale³

2019

J. Sens. Sens. Syst.

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Abstract. A method for amplitude–phase calibration of tri-axial accelerometers in the low-frequency range (0 to 20 Hz) is proposed, based on a linear slide, used to excite all the axes of the accelerometer at the same time, and a laser Doppler vibrometer (LDV) as a reference. For the phase evaluation different methods, like cross-correlation analysis and cross-spectrum analysis, have also been used for validation purposes. The procedure includes many further validation actions in order to verify the correctness of modelling of the systems being tested, of the data processing and to reduce the calibration uncertainty. Results show that the phase is a critical aspect to consider in calibration, more than the amplitude, and the comparison with the theoretical model is useful to verify the hypotheses. Different behaviours result depending on the elements of the measurement chain and not only on the type of accelerometer.

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Telecommunications in the ICT Age: From Research to Applications

Baldi

Cancellieri

Chiaraluce

et al. 2019

The First Outstanding 50 Years of “Università Politecnica Delle Marche”

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The human society in the information age deeply relies on digital information processing, communication and storage. Photonic routing and switching is expected to be exploited in future all-optical networks. Channel coding is needed in order to protect information against natural disturbances, and modern coding schemes are able to reach the ultimate limits predicted by Shannon. On the other hand, postquantum cryptography is necessary for assuring security against cyber attackers, possibly provided with quantum computers. Source coding, especially in video data compression, is recommended for optimizing the bandwidth usage. Spread spectrum systems can solve the problem of radio transmissions over common frequency bands. These technologies are of crucial importance for the evolution of networks and of the whole Internet, allowing people to interact each other and access information in the web. Nowadays, the conventional Internet of people has moved into the pervasive Internet of Things providing innovative services in a variety of application fields. In this respect, domotic systems, based on ambient and wearable sensors, appear of dramatic importance in the design of future assisted living protocols.

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Performance Evaluation of a Low-Cost Sensing Unit for Seismic Applications: Field Testing During Seismic Events of 2016-2017 in Central Italy

Cited by 22 publications

References 21 publications

Automotive Radar Application for Structural Health Monitoring

Automotive Radar Application for Structural Health Monitoring

Amplitude–phase calibration of tri-axial accelerometers in the low-frequency range by a LDV

Telecommunications in the ICT Age: From Research to Applications

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