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Matches 1 - 50 out of 25,419

Document Document Title
WO/2021/001734A1
The aim of the invention is a device for detecting the approach of a vortex ring state for a rotary-wing aerodyne (10), said detection device comprising a set of vibration sensors (16a, 16b, 16c) configured to be distributed in or over t...  
WO/2020/261207A1
A fibre-optic measurement system equipped with a controlled light generation system (1) and a receiving system (2) connected via an optical path which comprises a directional device (4) and which, in addition, has a processing unit (9) f...  
WO/2020/259591A1
Provided are a calibration method and a calibration device for an optical fiber strain sensing system. The method comprises: suspending a weight platform on a stainless steel frame by means of a sensing optical fiber, and adjusting the h...  
WO/2020/260189A1
The invention relates to a method and a device for controlling an ultrasonic tool unit for machining a workpiece on a machine tool. Multiple parameter sets are stored on a storage device of a control device of a machine tool. When contro...  
WO/2020/258174A1
The present application provides a vibration sensor and an audio device. The vibration sensor comprises a cavity having a sidewall, an elastic film mounted on the sidewall, and an MEMS chip having a back cavity. The MEMS chip is received...  
WO/2020/260807A1
A method for acquiring data for detecting damage to a bearing, comprising the following steps: (a) Obtaining (S10) a vibration signal from the bearing over a period of time; (b) determining (S14) spectrograms of said vibration signal at ...  
WO/2020/264242A1
The disclosure provides example mass-sensing instruments and methods for use thereof. A mass-sensing instrument includes a mass sensor that includes a first terminal and a second terminal. The mass sensor has a natural oscillation freque...  
WO/2020/259530A1
An acoustic reflector (4000) and an acoustic electronics device are disclosed. The acoustic reflector (4000) is for being used inside an enclosure (1000) of an acoustic electronics device, which is made of thermal conductive material and...  
WO/2020/255446A1
This operation sound diagnosis system (10) comprises: an operation sound detection unit (11) for detecting the operation sound of an actuator or driven machine, an operation state detection unit (12) for acquiring a time series of the dr...  
WO/2020/253455A1
A detection apparatus (1), a vibration level determination method, a vending apparatus and a storage medium. The detection apparatus (1) comprises an emission portion (10), wherein the emission portion (10) can emit identification inform...  
WO/2020/255358A1
An optical fiber sensing system according to this disclosure comprises: optical fiber (10) that is disposed so as to face in a plurality of directions and is for detecting sound produced in an area under observation; a reception unit (20...  
WO/2020/255745A1
[Problem] To suppress foreign substance intrusion through a through hole into a sensor package substrate having the through hole while suppressing substrate strength reduction. [Solution] This sensor package substrate 100 has through hol...  
WO/2020/255728A1
This vibration measurement device (10) measures the vibration of an object comprising a vibration source and a component having an area under measurement. The vibration measurement device (10) comprises a displacement calculation unit (1...  
WO/2020/252600A1
Example embodiments of the described technology provide a stretchable electrochemical cell. The electrochemical cell may comprise an anode, a cathode, first and second current collectors electrically coupled to the anode and cathode resp...  
WO/2020/256343A1
The present invention relates to a leakage management system and a leakage location prediction method. The leakage management system, according to the present invention, comprises: detection units (100-N) which are installed on a pipe an...  
WO/2020/256567A1
Device and method for measuring and visualizing the sound level in a place where at least two people are gathered, comprising at least one sound detector which is connected to at least one visualization device in such a way that the visu...  
WO/2020/254330A1
It is provided a sensor device comprising: a vibration detector configured to be provided in contact with a windowpane of a window; a sensor controller; and a cable between the vibration detector and the sensor controller; wherein the vi...  
WO/2020/256193A1
The present invention relates to a vibration detection sensor which, in order to prevent underground utility damage, detects and analyzes the vibration pattern of excavation equipment, and transmits excavation information of the surround...  
WO/2020/255206A1
A drive noise diagnosis system (10) comprises a drive noise detection unit (11), an operation state detection unit (12), a noise oscillation time-series spectrum acquisition unit (15), a feature point extraction unit (16), and a primary ...  
WO/2020/257188A1
Methods and systems are used to determine a causal response function of the ear. A probe assembly is inserted into each of one or more acoustic calibration waveguides. The probe assembly includes an acoustic source and a microphone. Cali...  
WO/2020/250478A1
Provided is an optical fiber cable for sound wave sensing that uses linear optical fiber and is capable of suppressing directivity. This optical fiber cable for sound wave sensing is provided with a cover part (10) having a sound wave re...  
WO/2020/250332A1
This road condition deduction device 2 is provided with: a reception unit 21 which receives, from each automobile, sensor information that includes location information concerning the location where the automobile is traveling and spectr...  
WO/2020/245970A1
An analysis device (1) is provided with, e.g., a sensor (2), an analysis unit (4), an analysis unit (5), an analysis unit (6), and an integration unit (7). The analysis unit (5) divides a spectrogram acquired by the analysis unit (4) int...  
WO/2020/245987A1
In the present invention, sound arriving from outside a mobile body is collected using a microphone disposed inside the mobile body. This sound collection device is attached to a mobile body. This sound collection device comprises a micr...  
WO/2020/244849A1
The invention relates to a method for monitoring a system (1) having a sensor (2) for generating vibration signals, wherein a frequency spectrum is calculated from the vibration signals by means of a Fourier transformation, and a modifie...  
WO/2020/243682A1
A system for determining the level of solids accumulated in a sand separator has a vibratory level sensor and a solid separator control system. The vibratory level sensor includes a vibratory rod and an exciter connected to the vibratory...  
WO/2020/240724A1
An optical fiber sensing system according to the present disclosure comprises: an optical fiber (10) that transmits an optical signal in which sound is superimposed; a conversion unit (21) that converts the optical signal into acoustic d...  
WO/2020/242676A1
Methods and apparatus for recording and analyzing echolocation calls using zero crossing and/or digital sampling (full spectrum analysis) techniques, and for optimizing trigger thresholds used to activate recording in response to detecti...  
WO/2020/233933A1
The invention relates to a method for controlling/regulating a rotary drive (13) of a work unit (4) of a track laying machine (1), in which a measurement variable (X) with an approximately periodic history function derived from a rotatio...  
WO/2020/237032A1
Aspects of the present disclosure describe Rayleigh fading mitigation via short pulse coherent distributed acoustic sensing with multi-location beating-term combination. In illustrative configurations, systems, methods, and structures ac...  
WO/2020/232669A1
A hitting detection method and device, a movable platform, and a computer readable storage medium. The hitting detection device is adapted to be fixedly mounted on the inner side of an object under test; an annular protrusion is provided...  
WO/2020/236115A1
The present invention, relates to a malfunction estimation method that allows personnel and spare parts to be provided according to the nature of the fault by means of the estimation of malfunction using machine noise analysis. The sound...  
WO/2020/237029A1
Aspects of the present disclosure describe multi-frequency coherent distributed acoustic sensing with a single transmitter / receiver pair using an offset Tx / Rx framing scheme and an additional optical IQ modulator to generate the mult...  
WO/2020/235754A1
The present invention relates to a method for designing a jig for testing a rotating body. A method for designing a jig for testing a rotating body according to one embodiment of the present invention, which is a method for designing a j...  
WO/2020/237038A1
Aspects of the present disclosure describe systems, methods and apparatus for improving the performance of Rayleigh-based phase-OTDR with correlation-based diversity combining and bias removal.  
WO/2020/234989A1
The purpose of the present invention is to provide a phase measurement method and a signal processing device capable of reducing the influence of noise of a measuring instrument without increasing the peak intensity of incident light pul...  
WO/2020/234309A1
The invention relates to an acoustic sensor comprising: - a component (18) having an input and an output, the component (18) being able to conduct light waves in a plurality of propagation modes between the input and the output, the comp...  
WO/2020/233908A1
The invention relates to a method for producing a part for an electric motor, comprising the steps: providing a part in an electric motor; identifying a part-based component of a force parameter in the electric motor; modifying the part ...  
WO/2020/230270A1
A vibration sensor (100, 100a) comprises: a sensor shell (110) that vibrates together with a subject (200) and in synchronization with the vibration of the subject (200); a piezoelectric substrate (120) that has, disposed on one surface,...  
WO/2020/229531A1
System for photoacoustic spectroscopy, the system comprising: ° a light system comprising a light source, wherein the light system is configured to generate a light beam, to modulate the light beam at a modulation frequency, and to dire...  
WO/2020/232259A1
A sensor, such as a piezoelectric MEMS vibration sensor, includes a frame, a beam array comprising a plurality of beams, and a plurality of masses. Each beam of the plurality of beams has an anchored end and an unanchored end, with each ...  
WO/2020/231884A1
Processing sound in an enhanced reality environment can include generating, based on an image of a physical environment, an acoustic model of the physical environment. Audio signals captured by a microphone array, can capture a sound in ...  
WO/2020/228547A1
A sound velocity profile inversion method based on an inverted multi-beam echometer. Said method comprises the following steps: mounting, in an inverted manner, the multi-beam echometer on an underwater submerged buoy or fixing same to a...  
WO/2020/229058A1
The invention concerns a method for configuring a digital filter for attenuating a torsion mode of a power transmission line of an aircraft turbine engine (1), the mode being associated with a frequency F_T falling within a confidence in...  
WO/2020/231728A1
This invention relates to apparatus and method for measurement and monitoring of physical properties of materials, such as liquids, and more particularly to acoustic instruments, methods, and systems that automatically measure air conten...  
WO/2020/229095A1
The invention relates to a method for analysing the soil properties and/or the degree of hardness of the soil (6) using a tool (2) of a construction machine (1). The tool (2) is abruptly placed on the soil (6) in such a manner that the s...  
WO/2020/223769A1
A bolt tension monitor for estimating tension in an elongate fastening member, said monitor comprising: a transducer for converting a vibration of the elongate fastening member into an electrical signal; a frequency detection assembly ar...  
WO/2020/226331A1
The present invention relates to a method for estimating the length of a roller chain by using the fricative sound generated by the friction between a roller and the groove of a sprocket when the roller chain is rotated by engaging with ...  
WO/2020/227244A1
An ultrasonic sensor (300) includes a substrate (304), a platen (306) and an acoustic stack (302) disposed between the substrate and the platen, including at least one piezoelectric layer. The ultrasonic transducer exhibits a signal-to-n...  
WO/2020/226002A1
This abnormal sound determination device comprises: a memory for storing sound data for a predetermined period of sound emitted from a target device; and a processor for determining whether a sound corresponding to sound data for one fra...  

Matches 1 - 50 out of 25,419