Investigations on suitability of MEMS based accelerometer for vibration measurements

Manikandan, K.; Pannirselvam, K.; Kenned, Jack J.; Kumar, C. Suresh

doi:10.1016/j.matpr.2020.10.506

Cited by 18 publications

(12 citation statements)

References 5 publications

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“…MEMS accelerometers in smartphones have been studied [2]- [12]. In some of these studies they show monitoring using smartphones at different levels and situations, not necessarily from an SHM approach.…”

Section: Introductionmentioning

confidence: 99%

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Application of MEMS accelerometer of smartphones to define natural frequencies and damping ratios obtained from concrete viaducts and footbridge

Braido

Pravia

2022

Rev. IBRACON Estrut. Mater.

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The continuous development of smartphones has garnered considered research attention owing to the possibility of its use in different engineering applications. MEMS accelerometers available on smartphones are useful for structural health monitoring. This study is aimed at determining the use of smartphones in the calibration and correction of the sampling rate for natural frequency and damping identification. Three concrete bridges were used in the case studies. The results indicate that smartphones can be used to understand some dynamic parameters.

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Section: Introductionmentioning

confidence: 99%

“…Studies have used different apps, such as the Accelerometer analyzer app developed by Mobile Tools [20], iDynamics app [5], and the phyphox app [12], in a controlled environment; however, in [24]. Phyphox was created to aid physics teaching using the smartphone sensors.…”

Section: Introductionmentioning

confidence: 99%

Application of MEMS accelerometer of smartphones to define natural frequencies and damping ratios obtained from concrete viaducts and footbridge

Braido

Pravia

2022

Rev. IBRACON Estrut. Mater.

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“…The method of selecting MEMS sensors for vibration measurement is described in the publication [ 8 ]. The performance and suitability for vibration measurement were assessed for two commercially available accelerometers and one present in a smart phone.…”

Section: Introductionmentioning

confidence: 99%

Application of the MEMS Accelerometer as the Position Sensor in Linear Electrohydraulic Drive

Rybarczyk

2021

Sensors

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Various distance sensors are used as measuring elements for positioning linear electrohydraulic drives. The most common are magnetostrictive transducers or linear variable differential transformer (LVDT) sensors mounted inside the cylinder. The displacement of the actuator’s piston rod is proportional to the change in the value of the current or voltage at the output from the sensor. They are characterized by relatively low measurement noise. The disadvantage of presented sensors is the need to mount them inside the cylinders and the high price. The article presents preliminary research on the replacement of following sensors and the use of a microelectromechanical system (MEMS) accelerometer as a measuring element in the electrohydraulic drive control system. The control consisted of two phases: at first, the signal from the acceleration sensor was analyzed during the actuator movement, based on the value determined from the simplified model implemented on the controller. In the range of motion in which the dynamics were the lowest, the signal was integrated and the obtained value was used in the second phase of motion. In the correction phase, a new set point was determined. Conducting the research required building a dedicated research stand. The author conducted the simulation and experimental research.

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“…The classical tools currently used for vibroacoustic testing are accelerometric transducers (piezoelectric, MEMS), whose output signal transmits information about absolute accelerations at locations corresponding to their mounting point [ 1 ]. Where a non-contact measurement is required, eddy-current sensors [ 2 ] based on inductive or laser interactions relying on triangulation methods for distance measurement, or velocity determination from the Doppler effect, are increasingly being used [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Motion Magnification of Vibration Image in Estimation of Technical Object Condition-Review

Śmieja

Mamala

Prażnowski

et al. 2021

Sensors

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One of the most important features of the proper operation of technical objects is monitoring the vibrations of their mechanical components. The currently significant proportion of the research methods in this regard includes a group of research methods based on the conversion of vibrations using sensors providing data from individual locations. In parallel with the continuous improvement of these tools, new methods for acquiring information on the condition of the object have emerged due to the rapid development of visual systems. Their actual effectiveness determined the switch from research laboratories to actual industrial installations. In many cases, the application of the visualization methods can supplement the conventional methods applied and, under particular conditions, can effectively replace them. The decisive factor is their non-contact nature and the possibility for simultaneous observation of multiple points of the selected area. Visual motion magnification (MM) is an image processing method that involves the conscious and deliberate deformation of input images to the form that enables the visual observation of vibration processes which are not visible in their natural form. The first part of the article refers to the basic terms in the field of expressing motion in an image (based on the Lagrangian and Eulerian approaches), the formulation of the term of optical flow (OF), and the interpretation of an image in time and space. The following part of the article reviews the main processing algorithms in the aspect of computational complexity and visual quality and their modification for applications under specific conditions. The comparison of the MM methods presented in the paper and recommendations for their applications across a wide variety of fields were supported with examples originating from recent publications. The effectiveness of visual methods based on motion magnification in machine diagnosis and the identification of malfunctions are illustrated with selected examples of the implementation derived from authors’ workshop practice under industrial conditions.

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Investigations on suitability of MEMS based accelerometer for vibration measurements

Cited by 18 publications

References 5 publications

Application of MEMS accelerometer of smartphones to define natural frequencies and damping ratios obtained from concrete viaducts and footbridge

Application of MEMS accelerometer of smartphones to define natural frequencies and damping ratios obtained from concrete viaducts and footbridge

Application of the MEMS Accelerometer as the Position Sensor in Linear Electrohydraulic Drive

Motion Magnification of Vibration Image in Estimation of Technical Object Condition-Review

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