Development of Wireless Torque Sensing Based on Surface Acoustic Wave Devices Using Embedded Microchip

Lin, Chih-Jer; Lin, Chia-Ching; Yu, Shen-Kai; Liu, Guoxiang

doi:10.1166/asl.2012.2464

Cited by 3 publications

(2 citation statements)

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“…In recent years, the surface acoustic wave (SAW) devices have gained increasing attraction for wireless sensing for temperature, pressure, chemical compositions, vapour, humidity, torque and others mechanical constraints [ 1 – 7 ]. Their most outstanding property is that they allow without a battery and wireless interrogation, as they are connected only by a radio frequency link to a transceiver or reader unit.…”

Section: Introductionmentioning

confidence: 99%

“…To determine the optimal dimensions of the cantilever beam, a theoretical modelization is proposed by analyzing the strain distribution along the piezoelectric cantilever beam [ 7 , 13 ], which allows to obtain analytical expressions of the acceleration sensitivity. Accordingly, the dimension of the cantilever beam is determined for best strain sensitivity.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Wireless and Temperature-Compensated SAW Vibration Sensor

Wang

Xue

Huang

et al. 2014

Sensors

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A novel wireless and passive surface acoustic wave (SAW) based temperature-compensated vibration sensor utilizing a flexible Y-cut quartz cantilever beam with a relatively substantial proof mass and two one-port resonators is developed. One resonator acts as the sensing device adjacent to the clamped end for maximum strain sensitivity, and the other one is used as the reference located on clamped end for temperature compensation for vibration sensor through the differential approach. Vibration directed to the proof mass flex the cantilever, inducing relative changes in the acoustic propagation characteristics of the SAW travelling along the sensing device, and generated output signal varies in frequency as a function of vibration. A theoretical mode using the Rayleigh method was established to determine the optimal dimensions of the cantilever beam. Coupling of Modes (COM) model was used to extract the optimal design parameters of the SAW devices prior to fabrication. The performance of the developed SAW sensor attached to an antenna towards applied vibration was evaluated wirelessly by using the precise vibration table, programmable incubator chamber, and reader unit. High vibration sensitivity of ∼10.4 kHz/g, good temperature stability, and excellent linearity were observed in the wireless measurements.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Novel Wireless and Temperature-Compensated SAW Vibration Sensor

Wang

Xue

Huang

et al. 2014

Sensors

View full text Add to dashboard Cite

show abstract

Contactless torque sensors based on optical methods: A review

Zhong,

Chen,

Liang

et al. 2024

Optics and Lasers in Engineering

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Torsional Vibration Extraction of Dual-Period Instantaneous Angular Speed Measurement of the Generalized Incremental Encoder

Zhang

Zhao

et al. 2021

Journal of Engineering for Gas Turbines and Power

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Torsional vibration is key information in monitoring the condition of the shaft system. Using the vector superposition principle, the relationship between the rotation motion and the torsional vibration of the shaft is analyzed. This paper proposes a generalized incremental encoder model and constructs a piecewise function to describe the principle of the pulse output type speed measuring device. The incremental encoder uses a fixed angular increment to stamp the time component of the angular motion of the shaft, thereby establishing a discrete relationship between the angular motion of the shaft and the time component. The relationship between the angular resolution of the encoder and the torsional vibration signal sampling theorem is deduced. The asymmetric under-sampling of the torsional vibration signals is explained from the perspective of signal sampling. According to the index period invariance of the reconstruction of the encoder disc angle sequence, a double-period instantaneous angular speed (IAS) calculation method is proposed, which uses all the time stamps, avoiding the sampling bandwidth idle caused by the single period method, causing the torsional vibration signal to obtain more detailed information, and its analysis bandwidth is twice that of the single-period method. Simulation and experiment verified the correctness and superiority of the research content. Finally, the calculation method was packaged as a functional module and embedded in an online torsional vibration monitoring device applied to two 1000Mw nuclear power turbine generator sets.

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Development of Wireless Torque Sensing Based on Surface Acoustic Wave Devices Using Embedded Microchip

Cited by 3 publications

References 0 publications

A Novel Wireless and Temperature-Compensated SAW Vibration Sensor

A Novel Wireless and Temperature-Compensated SAW Vibration Sensor

Contactless torque sensors based on optical methods: A review

Torsional Vibration Extraction of Dual-Period Instantaneous Angular Speed Measurement of the Generalized Incremental Encoder

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