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WO/2019/097213A1 |
A method for forming a pressure sensor is provided wherein an optical fibre is provided, the optical fibre comprising a core, a cladding surrounding the core, and a birefringence structure for inducing birefringence in the core. The bire...
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WO/2019/090786A1 |
An optical fiber Fabry-Perot sensor (1), and a manufacturing method thereof. The optical fiber Fabry-Perot sensor (1) comprises: a hollow tubular member (10) having a first tubular member (11), a cavity portion (12), and a second tubular...
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WO/2019/079689A1 |
Systems, methods, and apparatuses for taking pressure measurements are provided. A multi-hole pressure sensor probe can include a probe tip having a plurality of probe tip holes. The probe tip holes can lead to probe tip channels that co...
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WO/2019/051217A1 |
A pressure transducer (100) includes a cavity (102), a first dipolar molecule (104) disposed within the cavity (102), and a second dipolar molecule (106) disposed within the cavity (102). The first dipolar molecule (104) exhibits a quant...
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WO/2019/047626A1 |
A pressure sensor and a pressure detection method, the pressure sensor comprising: a liquid crystal box (1) which comprises a cholesteric liquid crystal layer (2), a liquid crystal state detection module and a pressure querying module, w...
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WO/2019/038328A1 |
The invention discloses a threshold sensor sensing a threshold resistance value by a physical property, whereas the sensor has RFID communication ability. The object of the invention to provide a sensor that can reliably and accurately d...
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WO/2019/028945A1 |
A pressure sensor, comprising: a displacement sensor (40), an elbow pipe (30) and a base (32); a first end of the elbow pipe (30) is fixed on the base (32), the displacement sensor (40) comprises a first reflection member (50) and a seco...
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WO/2019/024444A1 |
A pressure sensor and a manufacturing method therefor. The pressure sensor comprises a light emitting element (01), an interference filtering structure (02), and a photosensitive element (03) which are stacked to each other. The light em...
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WO/2019/019666A1 |
A fibre grating sensing demodulation system, comprising: a light source, an optical circulator, a sensing device, an optical spectrum analyser and a computer. The light source is used for realising the continuous output of light sources....
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WO/2019/013088A1 |
[Problem] To provide a pressure sensor device with which it is possible to suppress erroneous sensing of the pressure of a medium within a tube. [Solution] This pressure sensor device 30 is configured to be installable in a tube 11 throu...
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WO/2019/011386A1 |
The invention relates to a pressure sensor comprising a housing connected to a compressor head, the housing comprising a piston movably mounted in a cylinder, the cylinder is fluidly connected to a high-pressure part of a hydraulic syste...
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WO/2019/013089A1 |
[Problem] To provide a pressure detection device capable of limiting erroneous detection of the pressure of a medium inside a tube. [Solution] A pressure detection device 30 can be installed on a tube 11 transporting a medium BL and dete...
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WO/2018/234742A1 |
This application relates to methods and apparatus for distributed fibre optic sensing that can provide an indication of the absolute value of pressure acting on a sensing portion of a fibre optic cable. A sensor apparatus (600) has a fir...
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WO/2018/219492A1 |
The invention relates to a method for determining the pressure of a fluid, wherein there is a measurement arrangement for transmitting and receiving an acoustic wave, the acoustic wave passes along a measurement section (7) in the fluid ...
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WO/2018/210236A1 |
An optical fiber pressure sensor, an optical fiber pressure sensing system and the method for pressure measurement. The optical fiber pressure sensor comprises: a pressure sensing part (201) located on the optical fiber, and a reflection...
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WO/2018/205507A1 |
A dynamic five-hole probe, comprising a pressure-sensing part (1), a pressure-measuring hole transition section (2), a pressure-collecting section (3), dynamic pressure sensors (4) and soft-walled pressure-easing tubes (5), the pressure-...
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WO/2018/191860A1 |
A device for manufacturing an optical fiber end face thin film air pressure sensor, comprising a light source module (10), an optical fiber coupler (20), a spectral acquisition and analysis module (60), a conductive optical fiber (30), a...
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WO/2018/140964A1 |
Systems, methods, and media for detecting abnormalities in equipment that emit ultrasonic energy into a solid medium during failure are provided. In some embodiments, devices for monitoring a piece of equipment are provided, the devices ...
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WO/2018/101828A1 |
The embankment monitoring system comprises an optic sensor chain (10) and an interrogator (20). The optic sensor chain (10) comprises a series of intrinsic fiber optic sensors (12) that are mutually spaced with respect to each other in a...
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WO/2018/084711A4 |
A combustion pressure sensor comprises a sensor body (9), at least one first optical fibre (1, 2) inserted into the sensor body (9), and a resiliently deformable membrane (7; 13) attached to the sensor body (9). The at least one first op...
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WO/2018/084711A3 |
A combustion pressure sensor comprises a sensor body (9), at least one first optical fibre (1, 2) inserted into the sensor body (9), and a resiliently deformable membrane (7; 13) attached to the sensor body (9). The at least one first op...
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WO/2018/079363A1 |
This pressure sensor 1 is provided with: a base plate 50; and a functional element 40 which is stacked on the base plate 50 and comprises functional titanium dioxide which includes crystal grains of one or more types of β-phase trititan...
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WO/2018/070875A1 |
The invention relates to a pore pressure monitoring device, for use in geotechnical engineering, adapted to be deployed underground for monitoring pore-water pressure in the ground, comprising a pressure sensor cavity (2) and a pressure ...
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WO/2018/024868A1 |
A system, device (140) and method for the non-invasive ultrasound or any other imaging based measurement system of the intravascular blood pressure is presented, wherein the blood pressure measurements are performed by means of the image...
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WO/2018/026720A1 |
Autoexpandable devices for obtaining impedance, pressure, and other measurements in the gastrointestinal tract and other organs. In an exemplary embodiment of a capsule of the present disclosure, the capsule comprises an outer shell conf...
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WO/2018/022508A1 |
In accordance with one aspect, a device is provided having a transducer comprising a conductor, a diaphragm configured to move relative to the conductor, and a reference volume in communication with the external environment. The diaphrag...
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WO/2017/216467A1 |
The subject of the present invention is a method for measuring the pressure (Pr, Pr') of a compressed gaseous fuel within a supply system (S') of an engine (M) of an automotive vehicle, using a pressure measurement device (D) comprising ...
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WO/2017/212559A1 |
In the present invention, a plurality of through-holes are formed in a metallic cylindrical pipe that composes the outer circumferential part of a fiber-in-metallic-tube that is provided to an optical fiber cable and has an optical fiber...
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WO/2017/208645A1 |
The present invention enables improving the precision of measurement of liquid flow volume and the reproducibility of measurements. This flow volume measuring device is provided with: a light source which emits light on to a site to be m...
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WO/2017/176160A1 |
The invention relates to lighting technology and provides for the veracity, reliability and precision of measurements. A time period for an on-state of a lamp is set, and a normalized luminous flux gradient is set as a ratio of the modul...
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WO/2017/173463A1 |
A system for monitoring the depth of water in a sump pit that comprises a hub in remote communication with a sensor. The sensor comprises a transducer for detecting the relative proximity of the water's surface. The system monitors the m...
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WO/2017/150476A1 |
An optical fiber sensor according to the present invention is provided with a first fixing member at a fixing position provided to a base member, the first fixing member fixing optical fibers to the base member in a state in which a fibe...
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WO/2017/141002A1 |
A sensor (2) is provided, having an acoustic resonator (18) for containing a fluid such as air and at least one transducer (22, 24) arranged to emit an acoustic signal into the acoustic resonator (18) in response to an excitation signal ...
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WO/2017/142921A1 |
Methods, apparatus, and systems are provided for sensing pressure. One example apparatus includes a housing having a first port, a chamber disposed in the housing and having a second port, wherein the second port is coupled to the first ...
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WO/2017/120219A1 |
An adapter for connection between a luminaire and a power input for powering the luminaire comprises circuitry for modulating light output of the luminaire to contain information, or circuitry for connection to a network so that signals ...
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WO/2017/113965A1 |
A high-resolution polarized low-coherence interferometric pressure measurement device, which is provided in sequence with, from an input end to an output end, a broadband light source (1), an optical fiber coupler (2), an optical fiber F...
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WO/2017/113542A1 |
An air conditioner, an installation specification inspection method therefor and an apparatus thereof, wherein the air conditioner installation specification inspection method comprises: when receiving an instruction to enter a designate...
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WO/2017/106699A1 |
A miniature pressure sensor has been designed based on an optical fiber with fiber bragg grating (FBG). The fiber can be attached to a portion of tubing by co-extrusion, braiding, gluing, or other equivalent methods, where the portion of...
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WO/2017/099602A1 |
The present document relates to a pressure sensor comprising a structural element, the structural element comprising a first and second structural part. The sensor further comprises a first cavity being in fluid connection with an exteri...
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WO/2017/089624A1 |
The invention relates to an optical pressure sensor, such as a microphone, being constituted by two membranes, but where the sound does not arrive perpendicular to the membrane, but comes in from the side. The membranes may be parallel a...
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WO/2017/080818A1 |
An gas gauge proximity sensor is described, the sensor comprising: a measurement gas flow channel having an measurement outlet configured to output a first gas flow towards a measurement object; an optical pressure sensor for comparing a...
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WO/2017/078083A1 |
This stress sensor comprises: a light source which emits light of a first wavelength and light of a second wavelength that is different from the first wavelength; and an optical waveguide on which the light of the first wavelength and th...
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WO/2017/069620A1 |
The invention relates to a photonic integrated circuit (PIC) for use in a pressure sensing system comprising an integrated photonic component (IPC), configured to be exposed to an external pressure and to generate a wavelength response b...
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WO/2017/065036A1 |
The objective of the present invention is to provide an internal pressure inspection system which has a simple configuration, with which the shape of a panel portion of a hermetically sealed container can be detected with a high resoluti...
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WO/2017/062839A1 |
An optical connector including a first optical fiber having a first diameter and having a core that includes a thermally expanded core portion adjacent a first end of the first optical fiber, a second optical fiber spliced to a second en...
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WO/2017/061411A1 |
The present invention is a monitoring device that monitors the pressure state of a fluid in a device to be monitored having a chamber, in the interior thereof at least one of compression and expansion of the fluid being performed, wherei...
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WO/2017/055451A1 |
The invention relates to a pressure measuring device for converting a mechanical or hydraulic application of pressure into a measurement signal and forwarding the measurement signal to a remote analysis unit. The invention is characteriz...
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WO/2017/049392A1 |
There is described an optical pressure sensor comprising a sensor housing and an optical pressure cell mounted within the sensor housing and dividing the sensor housing into a first fluid space and a second fluid space. The optical press...
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WO/2017/021702A1 |
A method and system for monitoring fluid flow in an open channel system, using an optical fibre that extends along at least a portion of the open channel system within the channel below the surface of the fluid. The method comprising sen...
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WO/2017/011850A8 |
A method and system for assessing the condition of a pipeline in a pipeline system is disclosed. The method includes generating a pressure wave in the fluid being carried along the pipeline system at a generation location along the pipel...
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