Fibre grating pressure sensor with enhanced sensitivityusing a glass-bubble housing

Xu, Ming; Geiger, H.; Dakin, J.P.

doi:10.1049/el:19960022

Cited by 105 publications

(50 citation statements)

References 8 publications

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“…Three years later Xu et al [55] reported their FBG pressure sensor, the same group improved the pressure sensitivity by a factor of ten, using mechanical amplification, by mounting the FBG in a hollow glass bubble [56]. Liu et al [57] used a polymer coated FBG for simultaneous pressure and temperature measurements.…”

Section: Fbg Pressure Sensorsmentioning

confidence: 99%

Fiber Bragg Grating Sensors for Mainstream Industrial Processes

2017

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This paper reviews fiber Bragg grating sensing technology with respect to its use in mainstream industrial process applications. A review of the various types of sensors that have been developed for industries such as power generation, water treatment and services, mining, and the oil and gas sector has been performed. A market overview is reported as well as a discussion of some of the factors limiting their penetration into these markets. Furthermore, the author's make recommendations for future work that would potentially provide significant opportunity for the advancement of fiber Bragg grating sensor networks in these mainstream industries.

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Section: Fbg Pressure Sensorsmentioning

confidence: 99%

Fiber Bragg Grating Sensors for Mainstream Industrial Processes

2017

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“…However, the pressure sensitivity of a bare FBG (-0.022 pm/psi) is very low, which is to be greatly enhanced [12]. To enhance the pressure sensitivity, numerous techniques have been reported [13][14][15][16][17]. Even so, these techniques focused only on enhancement of pressure sensitivity, but did not address the sensor resolution, and the demodulation systems used for sensor interrogation were bulk in size, expensive and time consuming.…”

Section: Introductionmentioning

confidence: 99%

FBG based high sensitive pressure sensor and its low-cost interrogation system with enhanced resolution

et al. 2015

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A fiber Bragg grating (FBG) pressure sensor with high sensitivity and resolution has been designed and demonstrated. The sensor is configured by firmly fixing the FBG with a metal bellows structure. The sensor works by means of measuring the Bragg wavelength shift of the FBG with respect to pressure change. From the experimental results, the pressure sensitivity of the sensor is found to be 90.6 pm/psi, which is approximately 4000 times as that of a bare fiber Bragg grating. A very good linearity of 99.86% is observed between the Bragg wavelength of the FBG and applied pressure. The designed sensor shows good repeatability with a negligible hysteresis error of ± 0.29 psi. A low-cost interrogation system that includes a long period grating (LPG) and a photodiode (PD) accompanied with simple electronic circuitry is demonstrated for the FBG sensor, which enables the sensor to attain high resolution of up to 0.025 psi. Thermal-strain cross sensitivity of the FBG pressure sensor is compensated using a reference FBG temperature sensor. The designed sensor can be used for liquid level, specific gravity, and static/dynamic low pressure measurement applications.

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“…Owing to the unique mechanical and structural properties of silicon, silicon-based micromechanical transducers and sensors are widely used in a number of applications, including the sensing of temperature and humidity, [1][2][3][4] pressure, 5,6 inertia 7 and acceleration [8][9][10] and the motion of a moving track. 11 State-of-the-art microfabricated accelerometers have undergone a number of advances.…”

Section: Introductionmentioning

confidence: 99%

Frontside-micromachined planar piezoresistive vibration sensor: Evaluating performance in the low frequency test range

Zhang

Takagi

et al. 2014

AIP Advances

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Articles you may be interested inUsing a surface piezoresistor diffusion method and front-side only micromachining process, a planar piezoresistive vibration sensor was successfully developed with a simple structure, lower processing cost and fewer packaging difficulties. The vibration sensor had a large sector proof mass attached to a narrow flexure. Optimization of the boron diffusion piezoresistor placed on the edge of the narrow flexure greatly improved the sensitivity. Planar vibration sensors were fabricated and measured in order to analyze the effects of the sensor dimensions on performance, including the values of flexure width and the included angle of the sector. Sensitivities of fabricated planar sensors of 0.09-0.46 mV/V/g were measured up to a test frequency of 60 Hz. The sensor functioned at low voltages (<3 V) and currents (<1 mA) with a high sensitivity and low drift. At low background noise levels, the sensor had performance comparable to a commercial device. C 2014 Author(s)

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Fibre grating pressure sensor with enhanced sensitivityusing a glass-bubble housing

Cited by 105 publications

References 8 publications

Fiber Bragg Grating Sensors for Mainstream Industrial Processes

Fiber Bragg Grating Sensors for Mainstream Industrial Processes

FBG based high sensitive pressure sensor and its low-cost interrogation system with enhanced resolution

Frontside-micromachined planar piezoresistive vibration sensor: Evaluating performance in the low frequency test range

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