Fiber optic extrinsic FPI/FBG sensor for temperature-compensated pressure measurement in medical applications

2013 ◽  
Author(s):  
S. Poeggel ◽  
D. Tosi ◽  
G. Leen ◽  
E. Lewis
Keyword(s):  
Pressure Measurement ◽  
Fiber Optic ◽  
Medical Applications ◽  
Fbg Sensor

scholarly journals Pressure Membrane FBG Sensor Realized by 3D Technology

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5158
Author(s):  
Marcel Fajkus ◽  
Jan Nedoma ◽  
Radek Martinek ◽  
Michael Fridrich ◽  
Emil Bednar ◽  
...  
Keyword(s):  
Measurement Error ◽  
3D Printing ◽  
Pressure Sensor ◽  
Pressure Measurement ◽  
Fiber Optic ◽  
Pressure Sensitivity ◽  
Measuring Point ◽  
Fbg Sensor ◽  
Design Production ◽  
Fiber Optic Technology

The publication describes the design, production, and practical verification of an alternative pressure sensor suitable for measuring the pressure of gas, based on a combination of fiber-optic technology and 3D printing methods. The created sensor uses FBG (Fiber Bragg Grating) suitably implemented on a movable membrane. The sensor is equipped with a reference FBG to compensate for the effect of ambient temperature on the pressure measurement. The sensor is characterized by its immunity to EM interference, electrical passivity at the measuring point, small size, and resistance to moisture and corrosion. The FBG pressure sensor has a pressure sensitivity of 9.086 pm/mbar in the range from 0 to 9 mbar with a correlation coefficient of 0.9982. The pressure measurement in the specified range shows an average measurement error of 0.049 mbar and a reproducibility parameter of 0.0269 ± 0.0135 mbar.

Fiber optic radiation dosimetry for medical applications

1990 ◽  
Author(s):  
Harald Bueker ◽  
Friedrich W. Haesing ◽  
S. Nicolai ◽  
B. Wolters
Keyword(s):  
Radiation Dosimetry ◽  
Fiber Optic ◽  
Medical Applications ◽  
Optic Radiation

scholarly journals Influence on Calculated Blood Pressure of Measurement Posture for the Development of Wearable Vital Sign Sensors

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Shouhei Koyama ◽  
Hiroaki Ishizawa ◽  
Akio Sakaguchi ◽  
Satoshi Hosoya ◽  
Takashi Kawamura
Keyword(s):  
Blood Pressure ◽  
Calibration Curve ◽  
Pressure Measurement ◽  
Pulse Wave ◽  
Blood Pressure Measurement ◽  
Wave Signal ◽  
Fbg Sensor ◽  
Pressure Calculation ◽  
Measurement Height ◽  
The Difference

We studied a wearable blood pressure sensor using a fiber Bragg grating (FBG) sensor, which is a highly accurate strain sensor. This sensor is installed at the pulsation point of the human body to measure the pulse wave signal. A calibration curve is built that calculates the blood pressure by multivariate analysis using the pulse wave signal and a reference blood pressure measurement. However, if the measurement height of the FBG sensor is different from the reference measurement height, an error is included in the reference blood pressure. We verified the accuracy of the blood pressure calculation with respect to the measurement height difference and the posture of the subject. As the difference between the measurement height of the FBG sensor and the reference blood pressure measurement increased, the accuracy of the blood pressure calculation decreased. When the measurement height was identical and only posture was changed, good accuracy was achieved. In addition, when calibration curves were built using data measured in multiple postures, the blood pressure of each posture could be calculated from a single calibration curve. This will allow miniaturization of the necessary electronics of the sensor system, which is important for a wearable sensor.

A differential fiber-optic transducer for hydrostatic pressure measurement

1998 ◽  
Vol 70 (3) ◽  
pp. 238-242 ◽  
Author(s):  
Wojtek J. Bock ◽  
Tinko A. Eftimov ◽  
Roland Wisniewski
Keyword(s):  
Hydrostatic Pressure ◽  
Pressure Measurement ◽  
Fiber Optic

scholarly journals Fiber Optic Force Sensor for Medical Applications within a Backbone-shape Structure

Procedia CIRP ◽  
2013 ◽  
Vol 5 ◽  
pp. 66-69 ◽  
Author(s):  
Jumpiei Arata ◽  
Shogo Terakawa ◽  
Hideo Fujimoto
Keyword(s):  
Fiber Optic ◽  
Force Sensor ◽  
Medical Applications ◽  
Shape Structure
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