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WO/2014/083931A1 |
In the present invention, by way of a single optical fiber that is wound and attached to the outer circumference of a cylindrical body and that senses temperature and strain in the cylindrical body deformed by the pressure of a liquid, t...
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WO/2014/082793A1 |
The invention relates to a method for estimating the pressure (Pass) in a vacuum reservoir (28) of a vacuum brake servo (26) of a motor vehicle (10), the vehicle (10) comprising: - a braking device (16) operated by the pressure (Pmc) of ...
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WO/2014/082965A2 |
The invention relates to a method and device for locally resolved pressure measurement along a pressure region. Using a glass optical fibre (11) comprising an optical fibre core (11''), an optical fibre cladding (11'), and an outer prote...
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WO/2014/049178A2 |
An optical sensor for pressure measurements is described which comprises a sensor head (8) including: - a diaphragm (9) having a first surface (91) in contact with a fluid of which the pressure has to be measured and a second surface (92...
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WO/2014/035243A1 |
A pressure sensing assembly (1), comprising: an elongate, axially extending tube (100), having a flexible tube wall (102) that encloses an inner pressure chamber (106); and at least one sensor unit (200), including: two tube wall fixatio...
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WO/2014/004620A1 |
A fluid 10 is contained within a chamber 12. The chamber wall 14 has an inner surface 16 exposed to the fluid 10 and an outer surface 18 separated from the inner surface 18 by the material 20 of the wall 14. Ultrasound 22 is introduced i...
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WO/2014/001732A1 |
The invention provides a device (6) for measuring the pressure of a gas in a pollution control or energy storage system, comprising: • - a housing (61) provided with an inlet (611) and an outlet (612); • - a compound (62) disposed in...
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WO/2013/182643A1 |
The present invention relates to an all-optical sensor utilizing effective index modulation of a waveguide and detection of a wavelength shift of reflected light and a force sensing system accommodating said optical sensor. One embodimen...
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WO/2013/180085A1 |
Provided is a sphygmomanometer device with which FBG sensors are utilized in a non-invasive method that relives a stress that is continuous and imposed on a subject. The present invention is provided with: fiber Bragg grating sensors (10...
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WO/2013/175664A1 |
The purpose of the present invention is to easily measure steam pressure, without attaching a pressure measurement means that directly detects steam pressure. A boiler steam pressure measurement device that measures the saturated vapor p...
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WO/2013/137742A1 |
Method and device for determining pressure in a cavity (2) outside a casing pipe (1, 12) by use of a pressure sensing apparatus (8) where the method includes: - providing an elongate first tubular (24) that is closed or communicates with...
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WO/2013/127357A1 |
A force generation device capable of exerting a force to an object without contacting the object has a cup-shaped portion (1). The cup-shaped portion (1) has a concave portion (2) provided with a cross section of a bottom surface basical...
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WO/2013/122466A1 |
The invention relates to a pressure measurement device for enabling non-intrusive pressure measurement of a first fluid present in a volume having at least one wall, the device comprising: an enclosed space filled with a second fluid, a ...
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WO/2013/092946A1 |
An aspect of the invention relates to an occupancy sensor (10) for detecting the occupancy state of an item (18) occupiable by a human or animal occupant, e.g. a seat or a bed. The sensor comprises a thermistor (12), to be arranged in co...
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WO/2013/061281A1 |
An apparatus (100), control system (150) and methods are provided for directly measuring a pressure gradient, i.e. by real-time pressure measurements, with particular application for in situ measurement of transvalvular blood pressure gr...
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WO/2013/061645A1 |
Provided is an internal pressure inspection device of a sealed container having a lid part on the upper end part and/or the lower end part of the trunk part, wherein the lid part deforms because of internal pressure. A laser-type displac...
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WO/2013/046832A1 |
Provided are: a sensor housing container for a pneumatic fender, the sensor housing container facilitates both work of installing a sensor into a fender bag section and work of replacing the sensor; and a pneumatic fender. A container bo...
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WO/2013/020408A1 |
An optical fibre Fabry-Perot pressure sensor encapsulated without glue and a preparation method. The sensor includes: a sensor head, wherein the sensor head is of a four-layer structure, the first layer being a first monocrystalline sili...
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WO/2012/141830A1 |
Pressure sensor. The sensor includes a deformable diaphragm responsive to applied pressure and a rigid beam mounted to move as the diaphragm deforms. The rigid beam includes a mirrored surface for receiving light from and reflecting ligh...
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WO/2012/124127A1 |
Provided are: a sensor that is provided with a metal oxide film formed by a wet process and that can measure optical irradiation, hydrogen gas, and air pressure; and a method for producing the sensor. The sensor is able to detect light, ...
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WO/2012/085334A1 |
The invention relates to an ultrasound sensor(1) and a manufacturing method, the sensor (1) comprising an ultrasound transmitter (102, 103, 104), a cavity (4) arranged in connection with this, which is in resonance mode at the ultrasound...
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WO/2012/085335A1 |
The invention relates to a method for manufacturing an ultrasound sensor(1) comprising the steps for forming by conventional silicon technology a first wafer (111, device wafer) including at least one ultrasound transducer (200) and an u...
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WO/2012/061935A1 |
The present document describes a pressure guidewire comprising: a shaft tube with a proximal section; a middle section extending from the proximal section of the shaft tube, the middle section having greater flexibility than the proximal...
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WO/2012/063527A1 |
Each of a plurality of transmission units is set with a numerical value (a) which represents a sequence number regarding transmission, and a numerical value (N) which represents the total number of the transmission units. In a transmissi...
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WO/2012/036460A2 |
Disclosed are a wireless type measurement apparatus using a Surface Acoustic Wave (SAW)-based micro sensor and a method thereof. The wireless type measurement apparatus using the SAW-based micro sensor according to one embodiment of the ...
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WO/2012/030595A2 |
Disclosed is an exemplary optical sensing system including at least one light source for emitting light in a first wavelength range and light in a second wavelength. An image sensor is provided for detecting light emitted from the at lea...
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WO/2012/023918A1 |
Various embodiments include apparatus and methods of measuring pressure within pipes implemented in a well drilling operation. Methods and apparatus may include a single path optical interferometer having a sensing portion attachable to ...
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WO/2011/130325A1 |
Despite many practical limitations imposed by mobile device platforms and application execution environments, vocal musical performances may be captured and continuously pitch-corrected for mixing and rendering with backing tracks in way...
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WO/2011/120147A1 |
A sensing device for detecting a physical parameter exemplified by pressures, strains, temperatures, indices of refraction, and combinations thereof. The sensing device comprises a probe having a housing for sealably mounting therein an ...
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WO/2011/119335A2 |
The invention provides a signal processor that receives a signal containing information about an acoustic signal that is generated by at least one acoustic transmitter, that travels through an aerated fluid in a container, and that is re...
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WO/2011/119348A2 |
Systems and methods of measuring pressure of fluid in a disposable IV set connected to a fluid supply pump is disclosed. At least one sensing arrangement coupled to the fluid supply pump is provided. A chamber having a movable element is...
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WO/2011/114320A1 |
A self-contained, remotely interrogatable, autonomously positionable, pressure probe (20) set from which the volume fraction of a gaseous target-analyte (VA) in a mass, susceptible to changes in both total pressure of the mass (PT) and c...
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WO/2011/106184A1 |
In one aspect, the present invention provides a hermetically sealed fiber sensing cable comprising: a core fiber comprising at least one Bragg grating region, an outer surface and a length; a fiber cladding in contact with the core fiber...
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WO/2011/091811A1 |
A self-contained, remotely interrogatable, autonomously positionable, pressure probe and methods of manufacturing and using. The probe (10) includes (i) a hermetically sealed, flexible, gas impermeable sachet (50) capable of equilibriati...
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WO/2011/061309A1 |
The invention relates to the field of fiber structures, preferably adapted for use with fiber Bragg gratings in sensors. The fiber structure comprises a core and a cladding surrounding the core, a central micro structure (1) comprising a...
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WO/2011/058314A1 |
Fibre optic cables with improved performance for use in distributed sensing, for instance in distributed acoustic sensors, are disclosed. In one embodiment a fibre optic cable (210) comprises a core (208) and cladding (206) disposed with...
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WO/2011/045283A1 |
The invention relates to an ultrasonic measuring device (1) having a measuring body (3)that comprises a measurment end (6), having at least one ultrasonic transmitter (8) for coupling ultrasonic measurement signals into the measurement b...
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WO/2011/045006A1 |
An optical fiber (FD) that can be used for measuring pressure is arranged as follows. The optical fiber (FD) comprises a core (CO) and a cladding (CL) surrounding and contacting the core (CO). A stress-applying arrangement (SE1, SE2), wh...
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WO/2011/018355A1 |
The invention relates to a pressure-sensitive paint having luminescent pyrene dye embedded in a matrix, the luminescence thereof being a function of the partial oxygen pressure above a surface of the paint, wherein the pyrene dye is a py...
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WO/2011/006260A1 |
A superstructure fiber Bragg gratings (FBG) by laser-assisted direct writing of on-fiber metallic films. A laser direct write method is used to fabricate periodic films of silver nanoparticles on the non-planar surface of as-fabricated F...
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WO/2010/144113A2 |
This disclosure describes a fiber optic based pressure transducer that detects position of a heated end of a Bourdon tube under pressure. This movement can be calibrated to provide an accurate pressure reading. The temperature change in ...
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WO/2010/141723A2 |
A transducer including a housing; one or more pressure communicating configurations disposed within the housing; one or more selected pressure chambers in operable communication with the one or more pressure communicating configurations;...
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WO/2010/139934A1 |
An optical fibre cable for distributed fibre sensing of fluid pressure is disclosed. There are also disclosed a method and an apparatus for distributed fibre sensing of fluid pressure using the optical fibre cable. The optical fibre cabl...
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WO/2010/136154A1 |
The invention relates to a method for optical pressure measurement of a gas in a closed container by deflecting radiation of an emitter through the container and measuring the transmitted radiation by means of a detector, wherein the rad...
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WO/2010/129806A2 |
Several aspects of the volume gauge may be implemented with a pressure sensing system and/or a motion sensing system. The pressure sensing system for volume measurements may include a chamber, a pressure changing device, a pressure sensi...
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WO/2010/124400A1 |
The present invention provides a microscale pressure sensor that exhibits high sensitivity in a small form factor. The sensor is a bridged device in which a photonic crystal waveguide, surrounded by a photonic crystal slab, is suspended ...
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WO/2010/114650A1 |
A fiber sensor (130) package is disclosed. The fiber sensor package includes an interconnection (138) between a first optical fiber (132) and a second optical fiber (136) within a tubing (140) such that the first and second optical fiber...
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WO/2010/094572A1 |
The invention relates to the detection of pressure fluctuations in a hot medium (130), for example, in a combustion chamber of a gas turbine. In the method according to the invention, a flexible element (210) is used that is deflected fr...
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WO/2010/091554A1 |
A method of pitch period detection and a corresponding device are presented in the field of speech processing. The method includes: detecting the pitch for an input signal in the signal field to obtain a candidate pitch period; performin...
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WO/2010/089052A1 |
The invention relates to a sensor bolt 13 for measuring force and a ground conveyor having the same. The sensor bolt 13 comprises a sensor element 1 made of a material having light transmission properties varying as a function of externa...
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