Class / Patent application number | Description | Number of patent applications / Date published |
073658000 | With electrically controlled indicator | 89 |
20080216578 | VIBRATION ASSEMBLY, INPUT DEVICE USING THE VIBRATION ASSEMBLY, AND ELECTRONIC EQUIPMENT USING THE INPUT DEVICE - A vibration assembly includes a container, a vibration member containing a hollow portion with a bottom, at least two support members, a magnetic body, a coil having a spool axis, and a diaphragm that is attached to the container. Each of the support members has a flat and corrugated configuration. An end of the one of the support members is bonded to a portion of an edge portion of the hollow portion of the vibration member. The other end of the one of the support members is fixed to a portion of an upper edge of the container. An end of the other support member is bonded to the other portion of the edge portion of the hollow portion of the vibration member. The other end of the other support member is fixed to the other portion of the upper edge of the container. | 09-11-2008 |
20090031814 | MARKER DETECTION APPARATUS AND MARKER DETECTION METHOD - A marker detection apparatus detects a marker attached to a target sample from samples flowing in a sample flow, including: an electric field formation section that forms a quasi-electrostatic field in a path of the sample flow; and a detection section that detects, when the target sample labeled by the marker that is a particle made from a piezoelectric or electrostrictive substance of a unique vibration frequency gets into the quasi-electrostatic field, the vibration of the particle. | 02-05-2009 |
20100281987 | Device for monitoring one or more process variables - A device for determining or monitoring one or more physical and/or chemical, process variables and having a vibration sensor comprising, a plug-in element and a socket element, which are releasably connected by a pluggable connection and which communicate with one another via an interface, wherein, in the plug-in element or the socket element, a transducer is provided for determining or monitoring a process variable, and wherein the element not having the transducer has the vibration sensor, and the element having the vibration sensor is connectable with a superordinated unit. | 11-11-2010 |
20100281988 | VIBRATING SENSOR HAVING TWO CHANNELS ACTIVATED IN SEQUENCE - A vibrating sensor having a base and an axisymmetrical resonator secured to the base. The base and the resonator are associated with electrodes connected to a control circuit via at least a first connection channel and a second connection channel with the electrodes being connected to one or other of the channels. The control circuit has excitation electronics and detection electronics and is arranged to control an excitation stage and a detection stage on each of the connection channels. The excitation stages and the detection stages have substantially identical respective durations, wherein the control circuit is arranged to perform the following sequence: excitation stage on the second connection channel; detection stage on the first connection channel; excitation stage on the first connection channel; detection stage on the second connection channel. | 11-11-2010 |
20110132095 | Sub-Surface Windscreen for Outdoor Measurement of Infrasound - A windscreen is configured for measuring outdoor infrasonic sound. The windscreen includes a container and a microphone. The container defines a chamber. The microphone is disposed in the chamber and can be operatively supported by the floor. The microphone is configured for detecting infrasonic sound. The container is advantageously formed from material that exhibits an acoustic impedance of between 0 and approximately 3150 times the acoustic impedance of air. A reflector plate may be disposed in the container. The reflector plate operatively can support the microphone and provides a doubling effect of infrasonic pressure at the microphone. | 06-09-2011 |
20110209551 | DEVICE FOR ACTIVATING A SECURITY SYSTEM IN A VEHICLE - Disclosed is a device for activating a security system in a vehicle including a first and second vehicle sensor ( | 09-01-2011 |
20110265574 | System on a Chip Using Integrated MEMS and CMOS Devices - An integrated MEMS system in which CMOS and MEMS devices are provided to form an integrated CMOS-MEMS system. The system can include a silicon substrate layer, a CMOS layer, MEMS and CMOS devices, and a wafer level packaging (WLP) layer. The CMOS layer can form an interface region, one which any number of CMOS MEMS devices can be configured. | 11-03-2011 |
20110290028 | Ultrasonic Sensor - An ultrasonic sensor includes a cylindrical case having a bottom and a side wall, a piezoelectric element attached to an inner bottom surface of the case, a terminal retainer configured to hold outer terminals and inner terminals, and wires connected to the inner terminals and configured to feed power to the piezoelectric element. The side wall of the case has a thin portion adjacent to an opening of the case and a thick portion adjacent to the bottom of the case. The elastic member is provided between the thick portion and the terminal retainer. An opening region surrounded by the thick portion is preferably covered with the elastic member. The case is preferably internally filled with a filler. | 12-01-2011 |
20120174678 | Wireless saw sensors having integrated antennas - A wireless surface acoustic wave sensor includes a piezoelectric substrate, a surface acoustic wave device formed on the substrate, and an antenna formed on the substrate. In some embodiments, the antenna is formed on the surface of the substrate using one or more of photolithography, thin film processing, thick film processing, plating, and printing. | 07-12-2012 |
20120260737 | VIBRATING STRUCTURE GYROMETER WITH AT LEAST ONE TUNING FORK - Vibrating structure gyrometer with at least one tuning fork, produced by micro-machining from a thin plate, the said tuning fork comprising a pair of mobile inertial assemblies (EIM | 10-18-2012 |
20130047732 | Toilet Flush Detection System Utilizing Transducer with Piezoelectric Sounder Element - An arrangement for detecting toilet flushing by utilizing an acoustically-based motion detector in a simple amplifier circuit. The detector is in contact with the toilet bowl, which acts as a resonant system. Upon detection of such flushing, a subsequent event, such as a cleaning or disinfecting a toilet, ventilating the surrounding area or releasing deodorant into the area, may be triggered. The mechanically resonant system with the provided circuit is capable of separating frequencies from the frequency of the flushing water in a specific bowl design and provides a high degree of immunity to unwanted ambient frequencies. In addition, the system consumes low power and is suitable for battery power operation. | 02-28-2013 |
20130081473 | SENSOR ELEMENT, METHOD FOR MANUFACTURING SENSOR ELEMENT, SENSOR DEVICE, AND ELECTRONIC APPARATUS - A sensor element includes a base part | 04-04-2013 |
20130081474 | SENSOR ELEMENT, METHOD FOR MANUFACTURING SENSOR ELEMENT, SENSOR DEVICE, AND ELECTRONIC APPARATUS - A sensor element includes a base part, drive vibration arms that extend from the base part, an adjustment vibration arm | 04-04-2013 |
20140000373 | DEVICE FOR DIAGNOSING RAILWAY BOGIES BY APPLYING AN ENERGY-AUTONOMOUS MEASURING AND TRANSMITTING BOLT, AND CORRESPONDING CONTROL METHOD | 01-02-2014 |
20140000374 | Messaufnehmer vom Vibrationstyp sowie damit gebildetes Messsystem | 01-02-2014 |
20140013851 | SELF-POWERED SENSOR SYSTEM - A self-powered sensor system includes an autonomous sensor unit including at least one energy harvester which converts an induced vibration into at least one electrical signal; a power management unit comprising analogue signal processing circuitry, said analogue signal processing circuitry being configured for extracting and generating, from said received at least one electrical signal, at least one digital output signal indicative of a sensed physical state and at least one electrical power signal; and at least one user unit comprising electronic circuitry being powered by said at least one electrical power signal and/or receiving said at least one digital output signal provided by said power management unit. The description also relates to an electronic or network system, a machine or part thereof, a tire or wheel, or a means of transport including a self-powered sensor system according to embodiments described herein. | 01-16-2014 |
20140090475 | Methods and Systems for Detecting an Oscillatory Event - Methods and systems for detecting an oscillatory event are provided. According to one embodiment, a system may include a controller configured to provide a command signal to a positioning device and a processor communicatively coupled to the controller. The command signal may include a reference position. The processor may be configured to monitor a feedback signal responsive to the command signal. The feedback signal may include an actual position of the positioning device. The processor may be further configured to determine that within a predetermined period of time the actual position is both above a predetermined upper threshold and below a predetermined lower threshold. Based on the determination, the processor may declare the oscillatory event. | 04-03-2014 |
20140096612 | SYSTEM AND METHOD FOR DETECTING VIBRATION - A vibration detection system is provided. The vibration detection system includes a radio frequency (RF) source, a vibration sensor coupled to the RF source and configured to receive an RF signal supplied by the RF source and radiate RF energy, and a computing device coupled to said RF source and configured to calculate vibrational energy induced to the vibration sensor based on an impedance of the vibration sensor. | 04-10-2014 |
20140116147 | ULTRASONIC MEASUREMENT DEVICE, HEAD UNIT, PROBE, AND DIAGNOSTIC DEVICE - An ultrasonic measurement device includes an ultrasonic transducer device, a flexible substrate and an integrated circuit device. The ultrasonic transducer device has a substrate, an ultrasonic element array, a plurality of signal electrode lines formed on the substrate and electrically connected to the ultrasonic element array, and a plurality of signal terminals arranged on the substrate. In the flexible substrate, a plurality of signal lines are formed along a first direction. Each of the signal electrode lines has an electrode layer in which at least one signal electrode among some of the ultrasonic elements extends on the substrate. A long side direction of the integrated circuit device extends along a second direction which intersects with the first direction, and each of terminals of the integrated circuit device is connected to a corresponding one of the signal lines of the flexible substrate. | 05-01-2014 |
20140150558 | APPARATUS AND METHOD FOR CHARACTERIZING ADHESIVE BONDING AND OSSEOINTEGRATION - An apparatus and method is provided for characterizing adhesive bonding using an acoustic wave MEMS sensor. The sensor can consist of a silicon substrate, a thin aluminium nitride film on top of the substrate and a thin gold film above the aluminium nitride layer. An adhesive layer is added on top of the sensor and the dispersion property of acoustic waves in the layered configuration can be utilized for bonding integrity characterization. A wave dispersion model is developed to study the effect of changing the interface stiffness on the wave dispersion profile and to investigate the sensitivity of different sensor configurations. The results of the model illustrate that the dispersion profile shifts in the direction of decreasing wave velocity as the interface stiffness decreases. | 06-05-2014 |
20140190266 | FOOT WARE AND PADS WITH VIBRATIONAL SENSING SYSTEMS AND METHODS FOR MAKING AND USING SAME - Vibration sensing wear for soldiers or law enforcement officers include at least one sensing system having vibration sensors, at least one processing unit, and a user interface unit capable of altering the wearer of surface vibration (e.g., ground, walls, floors, ceilings, etc.), object size, and direction. | 07-10-2014 |
20140216161 | CAPACITIVE ULTRASONIC TRANSDUCER - The invention relates to capacitive ultrasonic transducer comprising a sensor head having a back plate, the structured front side of which is provided with an insulation layer, and. the back side of which is provided with an electrode. | 08-07-2014 |
20140260641 | FREQUENCY RESPONSE OF VIBRATION SENSORS - Frequency compensation of a vibration sensor digitally in a time domain by using a high-pass filter roll-off slope is presented. The subject matter reduces the noise floor of an analog front end or analog domain portion of a circuit configured to enhance the frequency response of a vibration sensor. The present subject matter eliminates or reduces analog components and adds pieces of signal processing software to digitally enhance the frequency response of a vibration sensor so as to reduce component costs. | 09-18-2014 |
20140260642 | ELECTRONIC SYSTEM WITH SURFACE DETECTION MECHANISM AND METHOD OF OPERATION THEREOF - An electronic system includes: a vibration broadcast module configured to provide a vibration; a sensor query module, coupled to the vibration broadcast module, with a motion sensor and a sound sensor configured to detect the vibration; and an operation module, coupled to the sensor query module, configured to invoke an operation based on the vibration detected. | 09-18-2014 |
20140298912 | DRIVE SIGNAL DISTRIBUTION FOR DIRECT FIELD ACOUTIC TESTING - A direct field acoustic testing system provides an acoustic field having a higher degree of spatial uniformity. The system includes a control microphone, a controller, a combiner, and at least four acoustic transducers. The controller is operatively coupled to the control microphone such that the controller receives at least one input signal from the control microphone and provides at least four separately controllable controller output signals. The combiner combines the at least four separately controllable output signals to form at least four secondary output signals, each composed of combinations of one or more of the at least four separately controllable controller output signals. Each of the at least four transducers is operatively coupled to at least one of the at least four secondary output signals such that the output of the transducer varies in response to changes in at least two of the at least four separately controllable controller output signals. | 10-09-2014 |
20140305222 | SEISMIC SENSOR CABLE TAKEOUT - A device includes a housing in which a seismic sensor module is at least partially housed, a cable connected to the seismic sensor module, and, a takeout through which the cable extends from the housing. The takeout is operable between a first configuration in which the cable extends vertically from the housing and a second configuration in which the cable extends horizontally from the housing. | 10-16-2014 |
20140338458 | Triboelectric Generators and Sensors - A triboelectric power system includes a triboelectric generator, a rechargeable energy storage unit and a power management circuit. The rechargeable energy storage unit is associated to the triboelectric generator. The power management circuit is configured to receive an input current from the triboelectric generator and to deliver an output current corresponding to the input current to the rechargeable battery so that the output current has a current direction and a voltage that will recharge the rechargeable battery. | 11-20-2014 |
20140366635 | HAND-HELD VIBRATION SENSOR - A hand-held or portable vibration sensor device having a housing and a sensor body which generally provides a single point of contact with the machinery or apparatus for which vibration measurement is desired. In one aspect, the sensor body comprises a vibration sensor element such as an accelerometer for measuring vibration. In another aspect, a force sensor such as a force sensing resistor or load cell is provided to reduce the impact of forces applied to said hand-held vibration sensor such as a force applied through a handle during measurement. In another aspect, a compensation circuit processes the out put from a vibration sensor element to provide a relatively flat frequency response over a desired operational frequency range. The hand-held vibration sensor may also comprise a rubber isolation member disposed between the sensor body and force sensor. | 12-18-2014 |
20140373632 | APPARATUS FOR DETERMINING AND/OR MONITORING AT LEAST ONE PROCESS VARIABLE - Apparatus ( | 12-25-2014 |
20150020595 | ACOUSTIC SENSING SYSTEM FOR A MOTOR VEHICLE - An acoustic sensing system for a motor vehicle includes a strain gauge mounted at a motor vehicle surface, and a sensing circuit operatively coupled to the strain gauge. The sensing circuit is configured and disposed to detect acoustic responses in a passenger compartment of the motor vehicle through the strain gauge. | 01-22-2015 |
20150143914 | PIEZOELECTRIC ACTUATOR MODULE AND MEMS SENSOR HAVING THE SAME - Embodiments of the invention provide a piezoelectric actuator module, which includes a multilayer part comprising a multilayer piezoelectric material part and an electrode part connected to the multilayer piezoelectric material part, and a support layer coupled with the multilayer part. The piezoelectric actuator module further includes a support part displaceably supporting the support layer. The multilayer piezoelectric material part is poled in the same direction, and the multilayer part is configured to expand or contract when voltages in anti-phase are applied to the electrode part. | 05-28-2015 |
20150293160 | CAPACITIVE SENSOR | 10-15-2015 |
20150320944 | NEBULIZER VIBRATING APERTURE PLATE DRIVE FREQUENCY CONTROL AND MONITORING - A nebulizer has an aperture plate, a mounting, an actuator, and an aperture plate drive circuit ( | 11-12-2015 |
20150377693 | A Sound Sensor - The present invention relates generally to an airborne sound sensor in the form of a compression assembly for detecting airborne sound. The system reduces the risk that workers will be exposed to dangerous high pressure gas jets which the industrial workers cannot see or hear escaping from high pressure industrial pressurized gas systems. A compression assembly ( | 12-31-2015 |
20150377694 | SYSTEMS AND METHODS FOR REMOTELY SENSING AND ASSESSING COLLISION IMPACTS - Various implementations provide systems and methods for remotely detecting and assessing collision impacts using one or more acoustical sensors, such as using acoustical sensors to detect helmet collisions on an athletic playing field. For example, at least one acoustical sensor is disposed adjacent an athletic playing field and remotely from the one or more players on the athletic playing field. A processor of a computing device in communication with the acoustical sensor is configured for identifying whether the acoustical signal indicates a collision event occurred between a helmet and another object. The processor may also be configured for identifying a location on the playing field where the collision event occurred and/or identifying one or more characteristics of the acoustical signal to determine the amount of force, the duration, the speed, the acceleration, and/or the location of the collision event on the helmet. | 12-31-2015 |
20160025590 | SYSTEM AND METHOD FOR EVALUATING REMAINING LIFE OF AN OPERATIVE SUB-SYSTEM OF A VEHICLE - A vehicle may include an operative sub-system positioned within a body of the vehicle, and a sensor assembly secured to the operative sub-system. The sensor assembly may include at least one sensor configured to detect vibration or shock energy, directed into the operative sub-system; and a processing unit configured to determine damage to the operative sub-system as damage data that is based on one or both of a magnitude and duration of the vibration or shock energy detected by the sensor(s). The sensor assembly may be self-powered. | 01-28-2016 |
20160061629 | Acoustic Interface Device - A system is provided including an acoustic interface device, configured for coupling to a transducer and to a specimen, the acoustic interface device comprising a material composition having a shear wave attenuation coefficient a | 03-03-2016 |
20160091344 | CAPACITIVE TRANSDUCER AND METHOD OF MANUFACTURING THE SAME, AND OBJECT INFORMATION ACQUIRING APPARATUS - Provided is a capacitive transducer with improved reliability of sealing. The capacitive transducer includes a cell and a sealing portion. The cell includes a first electrode and a vibrating membrane having a second electrode formed to oppose the first electrode through intermediation of a cavity. An etching opening portion is formed to form the cavity by sacrifice layer etching. The sealing portion seals the etching opening portion. A gap at a periphery of the sealing portion has a height smaller than that of the cavity. In a manufacturing method therefor, in a step of forming a sacrifice layer for forming the cavity and the gap communicating to the cavity via an etching flow path, a height of the sacrifice layer in a region that is to become the gap is set to be smaller than that of the sacrifice layer in a region that is to become the cavity. | 03-31-2016 |
20160097674 | PIEZOELECTRIC VIBRATION SENSOR FOR MONITORING MACHINERY - A vibration sensor includes a piezoelectric crystal; and a base having an upper surface and a lower surface, the piezoelectric crystal attached to the upper surface of the base, the base defining a notch in at least one of the upper surface and the lower surface. Another embodiment of a vibration sensor includes a first piezoelectric crystal; a second piezoelectric crystal; a base attached to the first piezoelectric crystal on first side of the base and attached to the second piezoelectric crystal on a second side of the base opposite the first side of the base; a voltage amplifier in electrical communication to the first piezoelectric crystal; and a charge amplifier in electrical communication to the second piezoelectric crystal. | 04-07-2016 |
20160114764 | Method and device for detecting rain on a windshield - In a method for detecting rain on a windshield, whose degree of wetting is determined with at least one sensor value, it is provided that the sensor value is determined piezoelectrically, wherein vibrations on the windshield are detected, which change depending on the degree of wetting or raindrops hitting the windshield. As a result, the entire windshield serves as a detection surface, thereby yielding a high accuracy. | 04-28-2016 |
20160187191 | VIBRATION COLLECTOR AND ELECTRONIC DEVICE - The present disclosure provides a vibration collector. The vibration collector comprises: a vibration collecting component; a first wireless coupler connected to the vibration collecting component; and an attaching component that is made of a flexible material and enables the vibration collector to be fixed onto an outer surface of an object in a detachable manner. When the vibration collector is fixed onto the outer surface of the object, the vibration collecting component collects a vibration from a vibration source and generates an electrical vibration signal based on the vibration. The first wireless coupler transmits the electrical vibration signal to an electronic device for processing. Also provided is an electronic device. | 06-30-2016 |
20170234725 | SENSOR ELEMENT, METHOD OF MANUFACTURING SENSOR ELEMENT, SENSOR, ELECTRONIC APPARATUS, AND MOVING OBJECT | 08-17-2017 |
073659000 | Spectrum analysis | 4 |
20090019936 | METHOD AND DEVICE FOR IDENTIFYING SQUEAKING NOISES - A method for detecting squeaking noises within a sound signal generated during operation of a motor vehicle or during operation of a component thereof is described; in this method the sound signal is detected; an amplitude spectrum of the sound signal representing the amplitude distribution in a frequency range is generated at a minimum of two points in time and the existence of a squeaking noise is detected by analysis of the at least two amplitude spectra. | 01-22-2009 |
20090249880 | Real-time detection of wafer shift/slide in a chamber - Methods and systems for detecting wafer shift/slide in a semiconductor process chamber have been disclosed. The vibration amplitude is measured in terms of acceleration because an increase in vibrational acceleration correlates with an increase of displacement of a wafer. The vibration of a chamber is measured. External vibratory forces acting on the chamber may be transmitted to the wafer inside the chamber. The methods/systems determine if there is a net resultant force that may cause an unconstrained wafer to move from its original position in a chamber by measuring the relative chamber vibrations in three orthogonal directions. A tri-axial or three uni-axial accelerometers are mounted on a preferably exterior wall of the chamber to measure its vibration amplitude. The signal obtained as a function of time is then compared against a predetermined alarm amplitude to provide notification for corrective action. | 10-08-2009 |
20090314092 | Method of Analyzing Non-Synchronous Vibrations Using a Dispersed Array Multi-Probe Machine - A method for identifying an unfolded non-synchronous blade vibration frequency in blades on a rotating rotor using a plurality of probes spaced from each other about the rotor. A set of data is acquired from the probes during a predetermined number of rotor revolutions and is processed using a Fourier analysis to generate an output representative of frequencies and phase shift angles corresponding to blade vibrations. The phase shift angles are used to identify a subharmonic for a blade vibration frequency to provide an output identifying the vibration frequency. A space dispersion and time dispersion of probes is described to increase the accuracy of the subharmonic determination using the phase shift angles. | 12-24-2009 |
20120304775 | DETECTION OF ANOMALOUS MOVEMENT IN A RECIPROCATING DEVICE - One embodiment of the invention provides a system for identifying an anomalous movement of a reciprocating element in a reciprocating device, the system comprising: at least one sensing device for sensing a vibration signal of the reciprocating element; a processing apparatus for separating the vibration signal into a first component having a first frequency range and a second component having a second frequency range different than the first frequency range; and a device for at least one of analyzing or displaying at least one of the first or the second components of the vibration signal, wherein the vibration signal includes positional data of the reciprocating element along at least one axis of the reciprocating element. | 12-06-2012 |
073660000 | Rotating machinery or device | 34 |
20080271538 | METHOD AND APPARATUS FOR EVALUATING NVH CHARACTERISTICS OF MECHANICAL SYSTEMS - A method and apparatus for evaluating NVH characteristics of a mechanical system including a torque-transmitting assembly having drive and driven members drivingly engaging each other. The torque-transmitting assembly is characterized by transmission error between the drive and driven members. The method comprises the steps of measuring a parameter representing NVH characteristics of the mechanical system during operation thereof upon a predetermined test cycle so as to obtain at least one NVH characteristic corresponding to at least two discrete values of the transmission error. The apparatus comprises a supporting member mounted to a casing for rotatably supporting the drive member and being axially movable relative to the casing so as to selectively adjust the transmission error, and an actuator assembly operatively associated with the supporting member for selectively adjusting position of the supporting member relative to the casing in order to selectively control the transmission error. | 11-06-2008 |
20090013790 | METHOD FOR VIBRATION-OPTIMIZING A MACHINE TOOL - The invention relates to a method for optimizing vibration of a machine tool, in which a driven shaft | 01-15-2009 |
20090019937 | METHOD AND APPARATUS FOR ULTRASOUND PHASED ARRAY TESTING OF BEARING BALLS - An automated scanning system and method, utilizing specialized dual phased array ultrasonic transducers for producing and detecting Rayleigh waves in ceramic bearing balls are provided for nondestructive, non-contact inspection of ceramic bearing balls. The phased array ultrasonic transducer utilizes a complex curvature configuration that enables the dual phased array ultrasonic transducers to focus ultrasonic energy onto the ball to optimally generate and receive Rayleigh wave signals in the spherical objects. | 01-22-2009 |
20090071256 | Vibrometer mounting mechanism - Adjustment of the distance between the tip of a pickup section and the outer surface of a shaft of a rotor can be carried out easily and with high precision. In a vibrometer mounting mechanism securing a measuring section of a vibrometer for measuring vibration of a shaft of a rotary machine to a casing of the rotary machine, the vibrometer mounting mechanism includes a case secured to the casing with fixing means; an inner cylinder that accommodate the measuring section at one end, that is disposed in the inside of the case, and that slides relative to the case; and an adjustment bolt disposed at one end of the case and capable of moving forward and backward with respect to the case and the inner cylinder, wherein the inner cylinder is made to move in a direction away from the shaft by the adjustment bolt being inserted into the case and the inner cylinder, and wherein the inner cylinder is made to move in a direction toward the shaft by the adjustment bolt being retracted from the case and the inner cylinder. | 03-19-2009 |
20090078051 | Method of On-Line Turbine Blade Slope and Sensor Position Verification - A method of monitoring vibrations in a blade structure of a turbine including generating signals from a sensor located adjacent to a radial outer edge of the blade structure to sense passage of targets located on the blade structure. The sensor is mounted eccentrically and the signals are obtained with the sensor located at different angular positions. In a first aspect of the invention, the signals from the sensor are used to determine a target slope angle of a target on a first turbine blade during operation of the turbine. In a second aspect of the invention, the signals from the sensor are used to position the sensor in response to a sensed variation in the axial position of the target on the first turbine blade. | 03-26-2009 |
20090078052 | Method of Matching Sensors in a Multi-Probe Turbine Blade Vibration Monitor - A method of matching sensors in a multi-probe blade vibration monitor for a turbine. The method includes providing at least two probes mounted in a casing of the turbine adjacent to a rotating blade structure of the turbine. Targets are provided on radially outer portions of the blade structure. Each of the probes includes a sensor generating signals corresponding to target passing events, and a set of synchronous harmonics of the rotational speed of the rotor are produced for each sensor. The position of the sensors is adjusted such that the sets of harmonics of the sensors are substantially matched, indicating that the positions of the sensors are matched. | 03-26-2009 |
20090084187 | Non-Synchronous Vibrational Excitation of Turbine Blades Using a Rotating Excitation Structure - A method of measuring vibration in a bladed rotor structure with a vibration monitor. The vibration monitor includes a sensor for sensing passage of the sensor targets on radially outer portions of the blade structure, and the sensor generates signals corresponding to target passing events. An excitation structure is provided including at least one air jet for providing an excitation force to the blade structure. The blade structure is rotated about an axis of rotation and the air jet is driven in a circular path about the axis of rotation at a different rotational speed to apply a non-synchronous excitation force to the blade structure. | 04-02-2009 |
20090217765 | SENSOR FAILURE DIAGNOSIS DEVICE AND SENSOR FAILURE DIAGNOSIS METHOD - A sensor failure diagnosis device including a control section that generates vibrations by moving a movable component inside a device is provided. The device includes a determining section that determines whether a value related to a vibration amount output from the sensor, which detects the vibrations generated in the device by the control section, falls within a predetermined range and an output section that outputs a result determined by the determining section. | 09-03-2009 |
20090266169 | DEVICE AND METHOD FOR MONITORING THE VIBRATORY CONDITION OF A ROTATING MACHINE - This present invention concerns a device having a mechanical bearing formed by two coaxial rings, one fixed relative to the machine and the other rotating, between which at least one rolling element is moveably positioned, at least one non-conducting positioning means secured to the fixed bearing ring, the positioning means including at least one placement holder for at least one conducting element forming a first plate of a capacitor, at a distance from a conducting part of the rotating ring forming the second plate of the capacitor, and with the positioning means attached to at least one partitioning means, the partitioning means being used to create a space between the two plates, thus forming a dielectric insulating medium, and to act as a sealed enclosure for this insulating medium ( | 10-29-2009 |
20100011868 | METHOD AND APPARATUS FOR DETECTING THE ROTATIONAL SPEED OF A ROTARY MEMBER - The speed of rotation of a rotary member such as a compressor or turbine wheel of a turbocharger is determined by directing an ultrasonic signal into a blade cavity and receiving the reflected signal, which is amplitude modulated by virtue of the passage of the blades across the ultrasonic transducer. The received signal is demodulated to determine the frequency of amplitude modulation of the received signal caused by passage of blades between the first and second locations. This enables the speed of rotation to be calculated. The performance of the turbocharger can thus be optimised in the context of the overall engine system via an engine control module. | 01-21-2010 |
20100043562 | VIBRATION DOSIMETER FOR DETERMINING VIBRATIONAL LOADING - A vibration dosimeter ( | 02-25-2010 |
20100064814 | FAILURE DETECT DEVICE AND FAILURE DETECT METHOD - A failure detect device detects the presence of a failure in a peripheral member of a rotary shaft by analyzing a vibration generated in a device provided with the rotary shaft when the rotary shaft is rotated. A vibration detection unit detects the vibration of the device, and a rotation speed detection unit detects a rotation speed of the rotary shaft. An analysis unit calculates a frequency spectrum of the vibration of the device and determines an actually measured vibration level at each vibration order by dividing a frequency component of the calculated frequency spectrum by the rotation speed of the rotary shaft. A detection unit detects the presence of a failure in the peripheral member on the basis of the actually measured vibration level at each vibration order. | 03-18-2010 |
20100089166 | APPARATUS AND METHOD FOR NON-CONTACTING BLADE OSCILLATION MEASUREMENT - An apparatus and method for non-contact blade vibration measurement is disclosed. The apparatus and method includes sensors which are arranged around the circumference of a rotor which is formed with rotor blades, a signal detection unit, and an evaluation unit. Devices are provided to determine the rotor position and/or the housing deformation. This avoids the technical problems of the prior art, and provides an improved apparatus and an improved method for non-contact blade vibration measurement. In particular, the attainment according to the invention eliminates the effect of rotor radial movements and housing deformations, i.e., oval deformations, on the measurement data, thereby ensuring high amplitude resolution for the vibration analysis under all conditions. | 04-15-2010 |
20100175480 | Fatigue Testing Device for Wind Turbine Blade Testing, a Method of Testing Wind Turbine Blades and a Control System for a Blade Testing Actuator - The invention provides a fatigue exciter for wind turbine blades. Wind turbine blades require excitation at or near their natural frequency to induce bending moments that simulate in service loadings and must be easily controllable and with the minimum of unnecessary added mass or force. The invention provides a device and a method by which force controlled feedback is used for finding an optimal excitation frequency. This force could be provided e.g. by a digital signal generator. | 07-15-2010 |
20100288052 | METHOD AND DEVICE FOR IMPLEMENTING SIMULATED TEST OF CENTRIFUGAL STRESS IN TURBINE BLADE - The object is to provide a method and device to detect internal defect in the weld overlaid portion of erosion resistant material in the border portion between the blade profile and the shroud of a turbine blade with high accuracy by a static test method for an individual turbine blade applying a resultant pressing force, corresponding to centrifugal force and untwisting force of the turbine blade | 11-18-2010 |
20110041617 | BASE EXCITATION TESTING SYSTEM USING SPRING ELEMENTS TO PIVOTALLY MOUNT WIND TURBINE BLADES | 02-24-2011 |
20110079084 | VIBRATION SENSOR WITH MECHANICAL ISOLATION MEMBER - An apparatus and system for sensing vibration in rotary or reciprocating machinery, such as motors, pumps, fans, gearboxes, compressors, turbo-machinery or high-speed spindles, which comprises a mechanical isolation member ( | 04-07-2011 |
20110265575 | System for estimating a condition of non-conductive hollow structure exposed to a lightning strike - A system is provided for estimating a condition of a non-conductive hollow structure exposed to a lightning strike. The structure has an internal cavity. The system includes a pressure transducer to measure a pressure of an acoustic wave generated within the internal cavity due to the lightning strike. The system further includes a controller coupled to the pressure transducer, to receive the measured pressure from the pressure transducer, and to process the condition of the structure, based on the measured pressure. | 11-03-2011 |
20120000290 | INSPECTION VEHICLE FOR A TURBINE DISK - An inspection vehicle structured to inspect a portion of the turbine disk, preferably the blade attachment hubs, while the turbine disk is disposed within a turbine housing assembly is provided. A turbine disk is generally planar but includes a inner hub and an outer blade attachment hub. The inner hub is coupled to a shaft and the blade attachment hub provides a surface to which removable blades are attached. The area between the inner hub and outer blade attachment hub is substantially planar. The inner and blade attachment hubs are the “inspection areas” that the inspection vehicle is structured to inspect. The inspection vehicle travels over, and is magnetically coupled to, the planar surface between the two hubs. | 01-05-2012 |
20120055255 | PHASED ARRAY ULTRASONIC INSPECTION SYSTEM FOR TURBINE AND GENERATOR ROTOR BORE - A phased array ultrasonic testing system for examining discontinuities in turbine or generator rotor bores formed within turbine or generator rotors of a turbine or generator rotor assembly. The system includes a phased array ultrasonic transducer structured to be coupled to a surface of the rotor bore at a first location in order to emit an ultrasonic beam toward a second location of the rotor bore which is to be examined. The system further includes a control system with a computer and a controller for programming, emitting, and steering the ultrasonic beam via at least one, two-dimensional phased array transducer, thereby precisely and accurately inspecting the area of interest. Computer control of the beam permits the number of inspection locations and the number of different transducer wedges to be reduced providing for an efficient, timely inspection. | 03-08-2012 |
20120137782 | VIBRATORY GYRO-SENSOR AND VIBRATORY GYRO CIRCUIT - Disclosed herein is a vibratory gyro-sensor including a vibratory section, a synchronous detector which synchronously detects a detected signal from the vibratory section in timed relation to a timing signal for synchronous detection, and a timing signal output section which outputs the timing signal for synchronous detection. The timing signal output section has a low-pass filter, a comparator, and a first phase shifter. The vibration monitor signal as converted into the binary signal by the comparator and shifted in phase by the first phase shifter is used as the timing signal for synchronous detection. | 06-07-2012 |
20120272740 | APPARATUS AND METHOD FOR MEASURING VIBRATION CHARACTERISTICS - A vibration characteristic measuring apparatus includes a magnetic bearing that generates magnetic force on the rotating body of a multi-stage centrifugal compressor, a displacement sensor that measures the vibration amplitude of the rotating body, a current amplifier that supplies a current to the magnetic bearing, and an excitation controller which outputs an excitation control signal for applying vibration to the rotating body and which measures the response characteristics of the vibration of the rotating body to the excitation control signal. The excitation controller outputs a rotating body control signal obtained by adding a vibration eliminating signal for eliminating unbalance vibration of the rotating body to the excitation control signal when measuring the response characteristics, and the current amplifier supplies a current that generates magnetic force in accordance with the rotating body control signal to the magnetic bearing. | 11-01-2012 |
20120312099 | ROTATING BLADE ANALYSIS - A method of analysing blade displacements detected by circumferentially spaced stationary timing probes associated with an assembly of rotating blades mounted on a rotor, including (a) identifying a possible resonant vibration event in the assembly of rotating blades; (b) zeroing the blade displacements on the rotations identified with the resonant vibration event to remove invariant blade displacements; (c) fitting modelled blade displacements corresponding to possible blade vibrational deflections at various frequencies to the zeroed blade displacements; and (d) characterising the resonant vibration event by identifying at each rotation the frequency having modelled blade displacements which correlate best with the zeroed blade displacements. Step (c) includes performing at each individual rotation the sub-step of fitting the modelled blade displacements at each frequency to the zeroed blade displacements for successive rotations which include that individual rotation. | 12-13-2012 |
20130167649 | DETECTING ROTOR ANOMALIES - An approach for detecting rotor anomalies is disclosed. An on-site monitoring unit monitors vibration measurements obtained from a rotor during a transient speed operation. In one aspect, the on-site monitoring unit classifies the vibration measurements into predetermined ranges of rotor speed during the transient speed operation, determines maximum vibration data for each of the predetermined ranges of rotor speed during the transient speed operation and compiles the maximum vibration data into a snapshot of the vibration measurements obtained during the transient speed operation. A remote monitoring unit detects a rotor anomaly from the snapshot of vibration measurements generated by the on-site monitoring unit. | 07-04-2013 |
20130298686 | DEVICE AND METHOD FOR MONITORING A ROTOR - A monitoring device for monitoring rotors of turbines, including: an acoustic sensor; and a sound waveguide for connecting the acoustic sensor to a sensing point close to the rotor of the turbine. The acoustic sensor is configured to detect, as soundwaves, pressure fluctuations due to pressure differences between suction and pressure sides of blades of the rotor as they move past in proximity of a sensing point. A method of monitoring a rotor of a turbine transmits pressure fluctuations due to pressure differences between suction sides and pressure sides of blades of the rotor going past the proximity of a sensing point by a sound waveguide to an acoustic sensor to be picked up as soundwaves. | 11-14-2013 |
20140109679 | Method For Identifying A Fault In An Electrical Machine - For identifying a fault in an electrical machine vibration is measured in a plurality of radial directions of the stator. On the basis of the vibration measurements a vibration frequency and a mode shape of the vibration at this frequency is determined. Characteristics of the vibration in terms of both the vibration frequency and the mode shape are used to identify a fault condition of the electrical machine. | 04-24-2014 |
20140144241 | AUTOMATIC INCIDENCE ANGLE ADJUSTMENT FOR ULTRASOUND TEST HEADS WHICH IS DEPENDENT ON THE POSITION OF THE TEST HEADS - An apparatus for ultrasound testing of a component includes an ultrasound test head and a guide unit. The guide unit is configured in such a manner that the test head is continuously moved in at least one translation direction, wherein an incidence angle of the test head with respect to a surface of the component is continuously changed at the same time. | 05-29-2014 |
20140352444 | SYSTEM FOR ACQUIRING A VIBRATORY SIGNAL OF A ROTARY MOTOR - A method and a system for acquiring a vibratory signal for troubleshooting a rotary motor, including: an input receiving a temporal vibratory signal of the motor and at least one current rotational speed of at least one shaft of the motor, and a sampling mechanism sampling the temporal vibratory signal in real time with at least one sampling signal synchronised with the at least one current rotational speed thus generating a corresponding synchronous vibratory signal. | 12-04-2014 |
20150122037 | METHOD FOR DIAGNOSING FAULTS IN SLURRY PUMP IMPELLERS - A method of diagnosing the condition of a slurry pump impeller is provided, comprising collecting vibration data from at least one accelerometer mounted to or proximate the pump over a specific time period; calculating indicators from the collected vibration data, the indicators comprising energy level, crest factor, square root amplitude value, and fault growth parameter; and plotting the calculated indicators against time to generate a fault trend indicative of health or deterioration of the impeller. The method further involves predicting the remaining useful life of the impeller using vibration data-driven prognostics. | 05-07-2015 |
20150292937 | INTEGRATED, PREDICTIVE VIBRATION ANALYSIS OF ROTATIONAL MACHINE WITHIN ELECTRONICS RACK - Predictive monitoring of a rotational machine of a cooling apparatus is provided by integrating a predictive vibration analyzer into an electronics rack being cooled by the cooling apparatus. The integrating includes associating at least one sensor of the predictive vibration analyzer with the rotational machine of the cooling apparatus. The analyzer includes a predetermined harmonics table of one or more base operational frequencies and associated rotational speed harmonics for the rotational machine indicative of one or more rotational faults, and the predictive vibration analyzer automatically evaluates vibration of the rotational machine during operation of the machine by analyzing vibration data therefor, and automatically ascertains, based on the vibration data, and the predetermined harmonics table, whether the rotational machine is predicted to possess a rotational fault of the one or more rotational faults. | 10-15-2015 |
20150322924 | METHOD OF MONITORING THE CONDITION OF A WIND TURBINE - A method of monitoring the condition of a wind turbine. The method includes the steps of selecting a plurality of measurable parameters indicative of the operational state of the wind turbine; recording measures of a variable indicative of the condition of the wind turbine during a period of normal operation thereof, and deriving corresponding values of a characteristic quantity from said measures; recording measures of the parameters during the same period; identifying a correlation between the characteristic quantity and at least one correlated parameter; and from said correlation, defining the expected value of the characteristic quantity as a target function that is a function of said at least one correlated parameter. | 11-12-2015 |
20160033321 | METHOD AND SYSTEM FOR MONITORING SUB-SYNCHRONOUS TORSIONAL OSCILLATIONS OF A SHAFT LINE OF A STEAM TURBINE - A method for monitoring sub-synchronous torsional oscillations of a shaft line of a steam turbine includes measuring a rotational speed of said shaft line over a period of time and generating, from the measured rotational speed, a signal representative of said rotational speed over said period of time. The method further includes performing a spectrum analysis on said signal to determine, for at least one given frequency, an amplitude of variation of said rotational speed at said given frequency, comparing said amplitude with at least one predetermined amplitude threshold for said frequency, and generating an alert signal if said amplitude exceeds at least one predetermined amplitude threshold. | 02-04-2016 |
20160103013 | DETERMINATION OF ULTRASONIC INSPECTABILITY - The ultrasonic inspectability of a supplied part out of which a final component is to be machined is determined by following a set of inspection rules for ultrasonic inspection of the supplied part. The rules determine which parts of the polygon cannot be inspected by a scan at a given ultrasound beam angle (typical beam angles are 0°, +20° and −20° relative to the perpendicular direction to the edge) along a given edge of the polygon. | 04-14-2016 |
20160169733 | ACOUSTIC MEASUREMENT SYSTEM FOR DETECTING TURBINE BLADE LOCKUP | 06-16-2016 |
073661000 | Having a probe | 9 |
20090078053 | Method and Apparatus for Tracking a Rotating Blade Tip for Blade Vibration Monitor Measurements - A method and apparatus for monitoring vibrations in a blade structure of a turbine including generating signals from a probe located adjacent to a radial outer edge of the blade structure to provide signals corresponding to vibrations at predetermined locations along the tips of the blades. A leading edge of a blade tip is detected during a blade tracking operation, and a known location along the length of the blade tips is monitored during a vibration measurement operation. The measurement operation may be performed simultaneously with the tracking operation to provide measurements as the axial location of the blades change during transitional modes of operation of the turbine. | 03-26-2009 |
20130192375 | VOID DETECTION SYSTEM - A void detection system for detecting voids in fresh concrete is disclosed. The void detection system includes at least one probe disposed on a vibrator and adapted to detect voids in the fresh concrete, and an indicator in communication with the at least one probe and adapted to receive real-time data from the at least one probe. Upon receiving the real-time data, the indicator relays information to a user indicative of the fresh concrete's consolidation. | 08-01-2013 |
20130228016 | TEXTURE INDICATION MEASURING METHOD AND MEASURING DEVICES - In a vibration information detection step, a probe is inserted into a food sample, and any one of the displacement, the velocity or the acceleration of a vibration occurring on the probe by the insertion is detected as vibration information (step S | 09-05-2013 |
20130312530 | ULTRASONIC PROBE AND ULTRASONIC DISPLAY DEVICE - An ultrasonic probe is provided. The ultrasonic probe includes an impact detection unit configured to electrically detect an impact applied to the ultrasonic probe, a power supply unit configured to supply power required for impact detection by the impact detection unit, and a storage unit configured to store information on the impact detected by the impact detection unit. | 11-28-2013 |
20140116148 | ULTRASONIC MEASUREMENT DEVICE, HEAD UNIT, PROBE, AND DIAGNOSTIC DEVICE - An ultrasonic measurement device includes an ultrasonic transducer device, a flexible substrate, and an integrated circuit device. The ultrasonic transducer device has an ultrasonic element array, and a plurality of signal terminals. In the flexible substrate, a plurality of signal lines are formed along a first direction. The integrated circuit device is mounted on the flexible substrate such that a long side direction is along a second direction. The integrated circuit device has a plurality of terminals arranged along the second direction, and a transmission circuit provided for each of the terminals to output a transmission signal. Each of the terminals of the integrated circuit device is connected to a corresponding one of the signal lines of the flexible substrate. A plurality of the transmission circuits are arranged along the second direction in a state in which the integrated circuit device is mounted on the flexible substrate. | 05-01-2014 |
20140251017 | DETECTION CIRCUIT, DRIVING METHOD, PROBE, AND SUBJECT INFORMATION ACQUIRING APPARATUS - A detection circuit detects a signal output from an element that receives an acoustic wave. The detection circuit is configured so as not to conduct a detection operation during a period in which the element does not receive the acoustic wave. | 09-11-2014 |
20150013466 | PHASING ADDER AND ULTRASOUND PROBE - A phasing adder and an ultrasound probe are disclosed. According to one implementation, the phasing adder includes a delay charge transferring unit and a delay adding unit. The delay charge transferring unit obtains signal charge in an amount obtained without amplifying according to charge generated in each of a plurality of piezoelectric elements. Each of the plurality of piezoelectric elements includes a piezoelectric body to generate charge according to sound pressure of input ultrasound. The delay charge transferring unit holds the signal charge for a predetermined amount of time. The delay adding unit executes phasing adding of an amount of the signal charge held for the predetermined amount of time in the delay charge transferring unit. | 01-15-2015 |
20150343492 | PIEZOELECTRIC TRANSDUCER DEVICE WITH LENS STRUCTURES - In an embodiment, a probe device includes a portion having a curved surface and a plurality of tiles variously coupled to the curved surface. The tiles each include a plurality of piezoelectric transducer elements and a base adjoining and supporting the plurality of piezoelectric transducer elements. The probe device further comprises curved lens portions each coupled to a respective one of the plurality of tiles, wherein for each of the tiles, the plurality of piezoelectric transducer elements of the tile are to propagate a wave toward the respective curved lens portion. In another embodiment, the probe device further comprises a sheath material surrounding the curved lens portions. | 12-03-2015 |
20150345987 | PIEZOELECTRIC TRANSDUCER DEVICE WITH FLEXIBLE SUBSTRATE - In an embodiment, a transducer device comprises a flexible substrate and a plurality of tiles coupled to the substrate. The tiles each include a plurality of piezoelectric transducer elements and a base adjoining and supporting the plurality of piezoelectric transducer elements. The substrate has disposed therein or thereon signal lines to serve as a backplane for communication to, from and/or among integrated circuitry of the tiles. In another embodiment, the integrated circuitry of the tiles are each pre-programmed to implement any of a respective plurality of operational modes. Signals exchanged with the tiles via the flexible substrate facilitate operation of the transducer device to provide a phased array of transducer elements. | 12-03-2015 |