A novel vibration sensor based on phase grating interferometry

Qian, Li; Liu, Xiaojun; Zhao, Lilong; Lei, Zili; Lü, Zhen; Guo, Lei

doi:10.1007/s00340-017-6724-9

Cited by 7 publications

(2 citation statements)

References 17 publications

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“…For the sensing of vibration, high‐performance sensors with fast response, high accuracy and excellent reproducibility are required. [ 29 ] To explore the potential of practical applications in industry and in daily life, [ 30,31 ] we demonstrate that the GF@PDMS sensor can be used to detect the different vibration modes of cell phone. The sensor was placed on a cell phone (Figure 4a) to detect the long‐term stability in dynamic low‐pressure zone (Figure 4b).…”

Section: Resultsmentioning

confidence: 99%

Flexible Broad‐Range Pressure Sensors Enabled by Deformation‐Induced Conductive Channels in 3D Graphene Foam@Polydimethylsiloxane Composite for Precise Vibrational Signal Detection

Jin

Shi²,

Zhu³

et al. 2020

Chin. J. Chem.

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Summary of main observation and conclusion Here we report the design and fabrication of high‐performance pressure sensors based on three‐ dimensional (3D) graphene foam filled polydimethylsiloxane (GF@PDMS) composite with a broad sensing range spaning from 0.05 kPa to 130 kPa. The interpretation of device functioning mechanism can be classified into low and high pressure sensing regions. In the low pressure region (<15 kPa), the pressure loading leads to the temporal connection of micro‐cracks in GF scaffold and forming conductive channels. In the high pressure region (15 kPa to 130 kPa), the pressure induced deformation of GF results in the better connections among micro‐cracks and the shortening of conductive pathway to further decrease the electrical resistance. The GF@PDMS sensors exhibited accuracy, sensibility and reproducibility to detect pressure signals with remarkable stability for over 16000 loading‐unloading cycles, indicating its great potential for practical applications. Moreover, the GF@PDMS sensors also showed high performances in the detection of dynamic pressures, such as subtle mechanical vibration signals, as well as physiology vibrational signals generated by human throats. We expect this technology could be integrated into different sensing systems for the applications in wearable smart electronics and human‐machine communications.

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Section: Resultsmentioning

confidence: 99%

Flexible Broad‐Range Pressure Sensors Enabled by Deformation‐Induced Conductive Channels in 3D Graphene Foam@Polydimethylsiloxane Composite for Precise Vibrational Signal Detection

Jin

Shi²,

Zhu³

et al. 2020

Chin. J. Chem.

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show abstract

“…However, with the further reduction of the grating pitch, the lithography manufacturing process will approach the diffraction limit [12,13], beyond which the grating pitch cannot be reduced further. In order to reduce the difficulty in grating manufacturing and to increase the measurement accuracy, many scholars have investigated grating subdivision technology, such as electronic subdivision [14,15], phase subdivision [16] and optical subdivision [17]. Because the grating pitch is very small, the quality of the electrical signal is affected by the manufacturing process and collimation of the light source.…”

Section: Introductionmentioning

confidence: 99%

A High Precision Time Grating Displacement Sensor Based on Temporal and Spatial Modulation of Light-Field

Zhu

et al. 2020

Sensors

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A new displacement sensor with light-field modulation, named as time grating, was proposed in this study. The purpose of this study was to reduce the reliance on high-precision measurements on high-precision manufacturing. The proposed sensor uses a light source to produce an alternative light-field simultaneously for four groups of sinusoidal light transmission surfaces. Using the four orthogonally alternative light-fields as the carrier to synthesize a traveling wave signal which makes the object movement in the spatial proportion to the signal phase shift in the time, the moving displacement of the object can be measured by counting time pulses. The influence of the light-field distribution on sensor measurement error was analyzed in detail. Aimed to reduce these influences, an optimization method that used continuous cosinusoidal light transmission surfaces with spatially symmetrical distribution was proposed, and the effectiveness of this method was verified with simulations and experiments. Experimental results demonstrated that the measurement accuracy reached 0.64 µm, within the range of 500 mm, with 0.6 mm pitch. Therefore, the light-field time grating can achieve high precision measurement with a low cost and submillimeter period sensing unit.

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Optimal Layout Method of Multiple Vibration Sensors Based on Motor Vibration Frequency Response

Zhou

Xu²,

Bai³

et al. 2022

J. Vib. Eng. Technol.

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A novel vibration sensor based on phase grating interferometry

Cited by 7 publications

References 17 publications

Flexible Broad‐Range Pressure Sensors Enabled by Deformation‐Induced Conductive Channels in 3D Graphene Foam@Polydimethylsiloxane Composite for Precise Vibrational Signal Detection

Flexible Broad‐Range Pressure Sensors Enabled by Deformation‐Induced Conductive Channels in 3D Graphene Foam@Polydimethylsiloxane Composite for Precise Vibrational Signal Detection

A High Precision Time Grating Displacement Sensor Based on Temporal and Spatial Modulation of Light-Field

Optimal Layout Method of Multiple Vibration Sensors Based on Motor Vibration Frequency Response

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