Fiber-Optic Michelson Interferometric Acoustic Sensor Based on a PP/PET Diaphragm

Liu, Li; Lü, Ping; Liao, Hao; Wang, Shun; Yang, Wei; Liu, Deming; Zhang, Jiangshan

doi:10.1109/jsen.2016.2526644

Cited by 85 publications

(32 citation statements)

References 17 publications

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“…The acoustic pressure is generated by the piezo buzzer measured by the SLM. Since the sound pressure level (

L_{P}

) is measured in a logarithmic scale, we can deduce

L_{P}

in a linear scale as follows [26]:

L_{P} (dB) = 20 \lg (\frac{P}{P_{0}})

where P is the sound pressure, and

P_{0}

is the reference sound pressure where

P_{0} = 2 \times 10^{- 5} Pa

in the air. Therefore, the sound pressure on the sensor head is estimated to be 0.18 Pa

(= 10^{79 / 20} \times 2 \times 10^{- 5} Pa)

.…”

Section: Characterization Of Michelson Interferometer-based Fiber mentioning

confidence: 99%

A Fiber-Optic Sensor for Acoustic Emission Detection in a High Voltage Cable System

Zhang

Pang

Liu

et al. 2016

Sensors

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We have proposed and demonstrated a Michelson interferometer-based fiber sensor for detecting acoustic emission generated from the partial discharge (PD) of the accessories of a high-voltage cable system. The developed sensor head is integrated with a compact and relatively high sensitivity cylindrical elastomer. Such a sensor has a broadband frequency response and a relatively high sensitivity in a harsh environment under a high-voltage electric field. The design and fabrication of the sensor head integrated with the cylindrical elastomer is described, and a series of experiments was conducted to evaluate the sensing performance. The experimental results demonstrate that the sensitivity of our developed sensor for acoustic detection of partial discharges is 1.7 rad/(normalm⋅Pa). A high frequency response up to 150 kHz is achieved. Moreover, the relatively high sensitivity for the detection of PD is verified in both the laboratory environment and gas insulated switchgear. The obtained results show the great potential application of a Michelson interferometer-based fiber sensor integrated with a cylindrical elastomer for in-situ monitoring high-voltage cable accessories for safety work.

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“…The acoustic pressure is generated by the piezo buzzer measured by the SLM. Since the sound pressure level (

L_{P}

) is measured in a logarithmic scale, we can deduce

L_{P}

in a linear scale as follows [26]:

L_{P} (dB) = 20 \lg (\frac{P}{P_{0}})

where P is the sound pressure, and

P_{0}

is the reference sound pressure where

P_{0} = 2 \times 10^{- 5} Pa

in the air. Therefore, the sound pressure on the sensor head is estimated to be 0.18 Pa

(= 10^{79 / 20} \times 2 \times 10^{- 5} Pa)

.…”

Section: Characterization Of Michelson Interferometer-based Fiber mentioning

confidence: 99%

A Fiber-Optic Sensor for Acoustic Emission Detection in a High Voltage Cable System

Zhang

Pang

Liu

et al. 2016

Sensors

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“…The maximum SNR for the graphite/epoxy diaphragm of fiber optic interferometric sensor was 21 dB [32]. A signal-to-noise ratio (SNR) of 43 dB was obtained by PP/PET Diaphragm at 600 Hz [20]. With a gold diaphragm for a frequency range of 20 kHz to 150 kHz, the maximum SNR achieved is 48 dB [25].…”

Section: Introductionmentioning

confidence: 97%

“…The sensitivity of diaphragm-based sensors depends upon the diaphragm radius and thickness [19]. Different diaphragm materials have been proposed for acoustic measurement study such as graphene [19], polypropylene/poly (ethylene terephthalate) [20], nitrile rubber [21], PDMS [22], Parylene-C [23], aluminium foil [24], gold [25], and silver [26]. The SMS structure sensors using multimode interference phenomena are gaining attention in many applications.…”

Section: Introductionmentioning

confidence: 99%

Fiber Optic Acoustic Sensor Based on SMS Structure With Thin Polymer Diaphragm for Partial Discharge Detection

et al. 2020

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This paper proposes a fiber optic acoustic sensor (FOAS) based on a single-mode fibermultimode fiber-single-mode fiber (SMS) structure attached to a thin polymer film used as a diaphragm. The diaphragm was specially developed to enhance the sensitivity towards the acoustic pressure-wave resulted from the partial discharge (PD) events. The sensitivity and signal-to-noise ratio (SNR) characterizations of the FOAS without and with a thin polymer film were performed. Both time-resolved and phase-resolved partial discharge (PRPD) patterns measurements were carried out in air and oil media. The experiment was conducted with three-electrodes using FOAS in conjunction with the conventional PD measurement as per IEC 60270 standard. The sensor achieved a sensitivity up to-31.21 dBm and-30.8 (0 dBm is defined as 1V/µBar) using broadband and tunable light source, respectively. The discharge characteristics pattern of FOAS was verified with IEC 60270 standard, and the patterns of FOAS resembled IEC 60270 standard. The proposed FOAS was capable for detecting the PD using both broadband and tunable laser lights. The use of the thin polymer film had a significant impact on the acoustic sensitivity. With the simple, low-cost design structure and free from electromagnetic interference, FOAS is found to be suitable as an in-situ sensor for detecting the acoustic signals of partial discharge and can be utilized inside the transformer.

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“…Therefore, fiber optic AE detection technology is also used to detect PD in the insulation of high-voltage power equipment. In the past few years, Mach-Zehnder, Michelson, and Sagnac fiber interferometric technologies have been applied to PD detection [3][4][5]. In addition, extrinsic Fabry-Perot (F-P) interferometric technology has received attention.…”

Section: Introductionmentioning

confidence: 99%

Response Bandwidth Design of Fabry-Perot Sensors for Partial Discharge Detection Based on Frequency Analysis

2019

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The insulation of power equipment can be effectively assessed by analyzing the acoustic signals originated from partial discharges (PD). Fabry-Perot (F-P) sensors are capable of detecting PD acoustic signals. Although the frequency bandwidth of an F-P sensor is mainly referred to conventional piezoelectric transducer (PZT) sensor, it is still doubtful to identify a suitable bandwidth for fiber sensors in detection of PD signals. To achieve a suitable bandwidth for an F-P sensor, the frequency distribution of PD acoustic emission is investigated, and an extrinsic F-P sensor is designed to detect acoustic signals generated from PD. F-P sensors with different intrinsic frequencies are fabricated as possible design standards of bandwidth for acoustic detection. PD acoustic signals are detected by these F-P sensors and PZT sensors in the experimental system, in which four typical electrode models are employed. The measured results of frequency performance are analyzed in linear and semilogarithmic coordinates. The results show that F-P sensors can effectively detect PD acoustic emissions in both wideband and narrowband modes. Moreover, F-P sensors achieve a higher sensitivity in the narrowband mode. We propose that intrinsic frequency of the F-P sensor should be designed in the frequency range of 100–170 kHz to obtain maximum sensitivity.

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Fiber-Optic Michelson Interferometric Acoustic Sensor Based on a PP/PET Diaphragm

Cited by 85 publications

References 17 publications

A Fiber-Optic Sensor for Acoustic Emission Detection in a High Voltage Cable System

A Fiber-Optic Sensor for Acoustic Emission Detection in a High Voltage Cable System

Fiber Optic Acoustic Sensor Based on SMS Structure With Thin Polymer Diaphragm for Partial Discharge Detection

Response Bandwidth Design of Fabry-Perot Sensors for Partial Discharge Detection Based on Frequency Analysis

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