Patent
Fluid flow sensing apparatus for in vivo and industrial applications employing novel optical fiber pressure sensors
TLDR
In this article, a fiber optical fiber fluid flow measuring device is provided for in vivo determination of blood flow in arteries, which includes an optical fiber sensor which is positioned in the blood flow passage in a restricted flow area.Abstract:
A fiber optical fiber fluid flow measuring device is provided for in vivo determination of blood flow in arteries. The device includes a fiber optical fluid differential pressure measuring device having at least one optical fiber sensor which optical fiber sensor is positioned in the blood flow passage in a restricted flow area. The fiber optical differential pressure fluid sensor is connected to a divided interferometer associated with an opto-electronic demodulator which has an output signal representing the differential pressure in the sensed area. The device also has utility in industrial applications.read more
Citations
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References
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Patent
Arterial pressure control system
TL;DR: In this article, an arterial pressure control system comprises an inflatable cuff for encircling the artery and a fluid pump connected to inflate the cuff, which is controlled by a programmable controller which receives a feedback signal from a pressure sensor contacting the artery downsteam from the cuff.
Patent
Fluid flow sensing apparatus for in vivo and industrial applications employing novel differential optical fiber pressure sensors
TL;DR: In this article, an optical fiber fluid flow device is provided for in vivo determination of blood flow in arteries, which includes a fiber optical fluid pressure measuring device having at least first and second optical fiber sensors.
Journal ArticleDOI
Integrated signal conditioning for silicon pressure sensors
J.M. Borky,Kensall D. Wise +1 more
TL;DR: In this paper, a silicon-diaphragm pressure sensor containing on-chip circuitry for signal conditioning has been designed for applications in biomedicine, which requires no off-chip components and only two external leads, making it suitable for use with multisensor catheters having diameters less than 1.5 mm.
Patent
Method and apparatus for measuring the flowrate of compressible fluids
Kenneth R. Hall,James C. Holste +1 more
TL;DR: In this paper, the flowrate of a compressible gs is determined by measuring the pressure and temperature on each side of a flow impedance device, such as an orifice plate and computing the flow rate from the resulting pressure/temperature differentials according to a newly discovered orifice equation disclosed herein.
Patent
Fiber optic sensor with enhanced immunity to random environmental perturbations
TL;DR: In this article, a sensor is provided for sensing or detecting the presence of an environmental field condition such as acceleration, temperature change, magnetic or acoustic fields by interference between two mutually orthogonal polarized eigenmodes in a single monomode optical fiber which may be disposed either linearly or wound on a mandrel made of compliant material for sensing an acoustic field, or made of magnetostrictive material for detecting a magnetic field.
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