Self-compensating displacement sensor based on hydramatic structured transducer and fiber Bragg grating

Chen, Shimeng; Liu, Yun; Liu, Xiuxin; Zhang, Yang; Peng, Wei

doi:10.1007/s13320-015-0278-4

Cited by 12 publications

(6 citation statements)

References 17 publications

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“…Researchers have also reported the effect of combining a cantilever beam with other elastic elements. By leveraging the different properties of deformation of these elastic elements and the superposition of the beam deflections, a larger ranges of displacement measurement has been achieved by some researchers (Wang et al ., 2007; Tian et al ., 2016; Chen et al ., 2015; He et al ., 2010; Zhao et al ., 2015; Guo et al ., 2017; Cui et al ., 2011; Fu et al ., 2009). A composite sensing structure consisting of spring and equal section cantilever beam was proposed (Wang et al ., 2007).…”

Section: Wavelength Detecting Fiber Bragg Grating Displacement Sensorsmentioning

confidence: 99%

“…To solve this problem, some technologies were proposed. The authors connected a hydraulic telescopic cylinder to a cantilever beam in series (Chen et al ., 2015). As shown in Figure 7, the sensing element (FBG) is composed of a single mode fiber and a photosensitive fiber and provides two separate FBG wavelengths for temperature compensation.…”

Section: Wavelength Detecting Fiber Bragg Grating Displacement Sensorsmentioning

confidence: 99%

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Fiber Bragg grating based displacement sensors: state of the art and trends

Liu

Guo

et al. 2019

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Purpose The purpose of this paper is to present the latest sensing structure designs and principles of information detection of fiber Bragg grating (FBG) displacement sensors. Research advance and the future work in this field have been described, with the background that displacement and deformation measurements are universal and crucial for structural health monitoring. Design/methodology/approach This paper analyzes and summarizes the existing FBG displacement sensing technologies from two aspects principle of information detection (wavelength detection, spectral bandwidth detection, light intensity detection, among others) and principle of the sensing elastomer structure design (cantilever beam type, spring type, elastic ring type and other composite structures). Findings The current research on developing FBG displacement sensors is mainly focused on the sensing method, the construction and design of the elastic structure and the design of new information detection method. The authors hypothesize that the following research trends will be strengthened in future: temperature compensation technology for FBG displacement sensors based on wavelength detection; a study of more diverse elastic structures; and fiber gratings manufactured with special fibers will greatly improve the performance of sensors. Originality/value The latest sensing structure designs and principles of information detection of FBG displacement sensors have been proposed, which could provide important reference for research group.

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Section: Wavelength Detecting Fiber Bragg Grating Displacement Sensorsmentioning

confidence: 99%

Section: Wavelength Detecting Fiber Bragg Grating Displacement Sensorsmentioning

confidence: 99%

Fiber Bragg grating based displacement sensors: state of the art and trends

Liu

Guo

et al. 2019

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“…Researchers often use a cantilever to design FBG displacement sensors (Baiou et al , 1999; Dong et al , 2001; Zhong et al , 2011). By combining a cantilever and other elastic elements, the sensitivity and measurement range of FBG displacement sensors can be enhanced (Chen et al , 2015; Li et al , 2017). Moreover, certain researchers designed other types of FBG displacement sensors with different elastic convertors, such as displacement sensors with a deformation ring and spring (Li et al , 2017) and those with a cantilever beam and helical bevel gear (Jiang et al , 2015).…”

Section: Introductionmentioning

confidence: 99%

Magnetic suction compression-type gap sensor based on fiber Bragg grating sensing

Meng

Tan

2021

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Purpose A fiber Bragg grating (FBG) sensor was designed to measure the door gap of automobile bodies. Design/methodology/approach The gap sensor was designed through a combination of the sliding wedge and cantilever beam, involving a magnetic force installation and arc structure of the force transmission point. Moreover, the sliding block adopted an anti-magnetic and wear-resistant material and the temperature compensation of the two FBGs was conducted. The magnetic force and contact stress of the sensor were examined to ensure that the sensor exhibited a certain magnetic attraction force and fatigue life. The performance of the gap sensor was examined experimentally. Findings The sensor could measure gaps with dimensions of 5 mm to 11 mm, with a sensitivity and measurement accuracy of 150.9 pm/mm and 0.0063% F.S., respectively. Moreover, the sensor exhibited a small gap sensitivity, with a repeatability error of 0.15%, anti-creep properties and magnetic interference abilities. Originality/value The sensor is compact and easy to install, as well as use for multiple sensor locations, with a maximum size of 43 mm, a mass of 26 g and installation type of magnetic suction. It can be used for high-precision static and dynamic measurements of the door inner clearance with a resolution of 0.013 mm to improve the efficiency of internal clearance on-line analysis and assembly quality inspection.

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“…For the FBG displacement sensor, in order to measure the external displacement, a conversion mechanism must be designed to convert the displacement information into an axial strain exerted on FBG. Traditionally, most of the conversion mechanisms are designed as spring [ 14 ], ring-type [ 15 , 16 ], cantilever beam and its evolution type [ 17 , 18 , 19 ], and other composite structures [ 20 , 21 , 22 ]. However, these structure designs have the weaknesses of low measurement accuracy due to friction losses and poor durability, especially when the sensor works under frequent alternating displacement brought by the measured object.…”

Section: Introductionmentioning

confidence: 99%

Fiber Bragg Grating Displacement Sensor with High Abrasion Resistance for a Steel Spring Floating Slab Damping Track

Guo

Liu

et al. 2018

Sensors

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This paper presents a fiber Bragg grating (FBG) displacement sensor with high abrasion resistance for displacement monitoring of a steel spring floating slab damping track. A wedge-shaped sliding block and an equal-strength beam form a conversion mechanism to transfer displacement to the deflection of the beam, and the deflection-induced strain is exerted on two FBGs. A special linear guide rail-slider and a precision rolling bearing have been adopted onto the conversion mechanism, which turned sliding friction into rolling friction and thus significantly reduced the friction during frequent alternating displacement measuring. Sensing principle and the corresponding theoretical derivation have been demonstrated. Experiment results show that the sensor has a sensitivity of 34.32 pm/mm and a high resolution of 0.0029 mm within a measurement range of 0~90 mm. Besides, the sensor has also a good measurement capability for micro-displacement within a range of 0~3 mm. The repeatability error and hysteresis error are 1.416% and 0.323%, respectively. Good creep resistance and high abrasion resistance for alternating displacement measurement have also been presented by a performance test. These excellent performances satisfy the requirements of high precision and long-term stability in structural health monitoring for machinery equipment and civil engineering, especially in the displacement monitoring of a floating slab damping track.

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Self-compensating displacement sensor based on hydramatic structured transducer and fiber Bragg grating

Cited by 12 publications

References 17 publications

Fiber Bragg grating based displacement sensors: state of the art and trends

Fiber Bragg grating based displacement sensors: state of the art and trends

Magnetic suction compression-type gap sensor based on fiber Bragg grating sensing

Fiber Bragg Grating Displacement Sensor with High Abrasion Resistance for a Steel Spring Floating Slab Damping Track

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