A signal interpolation method for Fabry–Perot interferometer utilized in mechanical vibration measurement

Shyu, Lih-Horng; Wang, Yung-Cheng; Chang, Cheng-Yuan; Shih, Hung-Ta; Manske, Eberhard

doi:10.1016/j.measurement.2016.05.072

Cited by 8 publications

(7 citation statements)

References 6 publications

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“…In most situations, the relationship between the magnitude to measure and the voltage obtained is not linear. For this reason, we implemented a lookup table (LUT) [46,47,48] in the microcontroller to translate the data obtained to a current or concentration. A LUT is an array of data that allows linking input values to output values, replacing the runtime computation with a simple array indexing operation.…”

Section: Methodsmentioning

confidence: 99%

Self-Powered Portable Electronic Reader for Point-of-Care Amperometric Measurements

Montes-Cebrián

Álvarez-Carulla

Colomer‐Farrarons

et al. 2019

Sensors

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In this work, we present a self-powered electronic reader (e-reader) for point-of-care diagnostics based on the use of a fuel cell (FC) which works as a power source and as a sensor. The self-powered e-reader extracts the energy from the FC to supply the electronic components concomitantly, while performing the detection of the fuel concentration. The designed electronics rely on straightforward standards for low power consumption, resulting in a robust and low power device without needing an external power source. Besides, the custom electronic instrumentation platform can process and display fuel concentration without requiring any type of laboratory equipment. In this study, we present the electronics system in detail and describe all modules that make up the system. Furthermore, we validate the device’s operation with different emulated FCs and sensors presented in the literature. The e-reader can be adjusted to numerous current ranges up to 3 mA, with a 13 nA resolution and an uncertainty of 1.8%. Besides, it only consumes 900 µW in the low power mode of operation, and it can operate with a minimum voltage of 330 mV. This concept can be extended to a wide range of fields, from biomedical to environmental applications.

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Section: Methodsmentioning

confidence: 99%

Self-Powered Portable Electronic Reader for Point-of-Care Amperometric Measurements

Montes-Cebrián

Álvarez-Carulla

Colomer‐Farrarons

et al. 2019

Sensors

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“…The light intensity can be expressed as Equation. (17) and two orthogonal signals can be determined by Equation (18) and Equation (19).…”

Section: Proposed Differential Quadrature Fabry-pérot Interferometermentioning

confidence: 99%

“…Furthermore, the conventional correction method of nonlinearity error is also difficult to implement in this signal [16,17]. Subsequently, a look-up table method was provided to carry out the signal subdivision with the resolution of 0.1 nm in the polarized Fabry-Pérot interferometer [18]. Still, this method can only be processed for a single Lissajous signal under specific measurement conditions, e.g., measuring speed and range, etc.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Differential Quadrature Fabry–Pérot Interferometer with Variable Measurement Mirrors

et al. 2020

Self Cite

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Due to the common path structure being insensitive to the environmental disturbances, relevant Fabry–Pérot interferometers have been presented for displacement measurement. However, the discontinuous signal distribution exists in the conventional Fabry–Pérot interferometer. Although a polarized Fabry–Pérot interferometer with low finesse was subsequently proposed, the signal processing is complicated, and the nonlinearity error of sub-micrometer order occurs in this signal. Therefore, a differential quadrature Fabry–Pérot interferometer has been proposed for the first time. In this measurement system, the nonlinearity error can be improved effectively, and the DC offset during the measurement procedure can be eliminated. Furthermore, the proposed system also features rapid and convenient replacing the measurement mirrors to meet the inspection requirement in various measuring ranges. In the comparison result between the commercial and self-developed Fabry–Pérot interferometer, it reveals that the maximum standard deviation is less than 0.120 μm in the whole measuring range of 600 mm. According to these results, the developed differential Fabry–Pérot interferometer is feasible for precise displacement measurement.

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“…The optical structure of the Fabry–Pérot interferometer is shown in Figure 13(b) (Shyu et al , 2016). The Fabry–Pérot cavity consists of two parallel mirrors, in which the light is reflected repeatedly and forms the multiple-beam interference.…”

Section: The Contact Vibration Sensormentioning

confidence: 99%

Vibration sensor for the health monitoring of the large rotating machinery: review and outlook

Xing²,

et al. 2018

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Purpose At present, one of the key equipment in pillar industries is a large rotating machinery. Conducting regular health monitoring is important for ensuring safe operation of the large rotating machinery. Because vibrations sensors play an important role in the workings of the rotating machinery, measuring its vibration signal is an important task in health monitoring. This paper aims to present these. Design/methodology/approach In this work, the contact vibration sensor and the non-contact vibration sensor have been discussed. These sensors consist of two types: the electric vibration sensor and the optical fiber vibration sensor. Their applications in the large rotating machinery for the purpose of health monitoring are summarized, and their advantages and disadvantages are also presented. Findings Compared with the electric vibration sensor, the optical fiber vibration sensor of large rotating machinery has unique advantages in health monitoring, such as provision of immunity against electromagnetic interference, requirement of less insulation and provision of long-distance signal transmission. Originality/value Both contact vibration sensor and non-contact vibration sensor have been discussed. Among them, the electric vibration sensor and the optical fiber vibration sensor are compared. Future research direction of the vibration sensors is presented.

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A signal interpolation method for Fabry–Perot interferometer utilized in mechanical vibration measurement

Cited by 8 publications

References 6 publications

Self-Powered Portable Electronic Reader for Point-of-Care Amperometric Measurements

Self-Powered Portable Electronic Reader for Point-of-Care Amperometric Measurements

Investigation on the Differential Quadrature Fabry–Pérot Interferometer with Variable Measurement Mirrors

Vibration sensor for the health monitoring of the large rotating machinery: review and outlook

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