Class / Patent application number | Description | Number of patent applications / Date published |
374117000 | By a vibratory effect (e.g., resonant frequency, acoustical) | 47 |
20080205479 | Apparatus and Method For Sensing Change In Environmental Conditions - An apparatus for sensing a change in environmental conditions is disclosed. The apparatus includes a coating or a wire between two surfaces that has a mechanical property changed as a result of a change in the environmental conditions. The change in the mechanical property of the coating or wire results in a change in a vibration characteristic of the apparatus, such as the frequency, phase, amplitude or quality factor. The change in the vibration characteristic can be used to determine the change in the environmental condition. | 08-28-2008 |
20080279250 | FIRST DETECTING SHEET AND FIRST THERMOMETRIC SYSTEM FOR DETECTING AND MEASURING TEMPERATURE OF AN OBJECT UNDER TEST, SECOND DETECTING SHEET AND SECOND THERMOMETRIC SYSTEM FOR DETECTING AND MEASURING TEMPERATURE OF A DUMMY SUBSTRATE, AND HEAT TREATMENT APPARATUS USING SAME - A first thermometry system for measuring a temperature of an object under test includes a first detecting sheet having crystal oscillators arranged on a first sheet-like object formed of resin, and a first measuring device for measuring the temperature based on frequencies acquired from the crystal oscillators and corresponding to natural frequencies of the crystal oscillators. In this system, the first detecting sheet is placed in contact with the object under test, whereupon the crystal oscillators provide the natural frequencies corresponding to the temperature of the object under test. The first measuring device measures the temperature of the object under test accurately based on the frequencies corresponding to the natural frequencies. | 11-13-2008 |
20080285617 | DIELECTRIC RESONATOR THERMOMETER AND A METHOD OF USING THE SAME - A thermometer is provided. A housing has at least one opening. A dielectric element is disposed in the housing. At least one microwave guide is coupled to the at least one opening for providing a signal into the dielectric element for propagation at a resonant frequency and for receiving the signal from the dielectric element. A temperature determination unit receives the signal from the at least one microwave guide, measures the resonant frequency of the dielectric element, and determines the temperature of the dielectric element based on a relationship between resonant frequency and temperature of the dielectric element. | 11-20-2008 |
20090028211 | ULTRASONIC DIAGNOSTIC APPARATUS - An ultrasonic diagnostic apparatus includes an ultrasonic probe having a plurality of transducers arranged and a plurality of temperature sensors located along a direction of arranging the transducers, and a temperature calculation device for obtaining a maximum temperature on the basis of the detected temperatures of the plurality of temperature sensors. | 01-29-2009 |
20090175313 | SEMICONDUCTOR SUBSTRATE TEMPERATURE DETERMINATION - The invention provides a method and a device for determining the temperature of a semiconductor substrate. A resonance circuit ( | 07-09-2009 |
20090196322 | Method and System for a Temperature Sensing Crystal Integrated Circuit with Digital Temperature Output - Aspects of a method and system for a temperature sensing crystal Integrated circuit with digital temperature output are provided. In this regard, an indication of temperature may be generated in an integrated circuit (IC) comprising a memory, a crystal or crystal oscillator, and at least a portion of an analog-to-digital converter. The temperature indication may be digitized via the analog-to-digital converter. Operation of one or more circuits may be controlled based on the digital temperature indication. The digital temperature indication may be communicated over a communication bus. An analog portion of the analog-to-digital converter may be integrated in the IC and may comprise, for example, a delta-sigma modulator. A digital portion of the analog-to-digital converter may be external to the IC and may comprise, for example, a digital filter. | 08-06-2009 |
20090196323 | Method and System for an Energy Efficient Temperature Sensing Crystal Integrated Circuit - Aspects of a method and system for an energy efficient temperature sensing crystal integrated circuit (TSCIC) are provided. In this regard, one or more circuits in a temperature sensing crystal integrated circuit (TSCIC) may be configured to control power consumption of the TSCIC. The one or more circuits in the TSCIC may comprise a memory and a crystal. The one or more circuits in the TSCIC may be operable to generate an indication of temperature of the crystal. The one or more circuits in the TSCIC may be configured to control a current supplied to the crystal within the TSCIC, wherein the configuring is based on phase noise requirements of a signal generated by the crystal. Generation of the temperature indication may be enabled or disabled. The enabling or disabling may occur based on a rate of change of a temperature in the TSCIC. | 08-06-2009 |
20090213897 | ULTRASONIC PROBE AND ULTRASONIC DIAGNOSTIC APPARATUS - An ultrasonic diagnostic apparatus includes: an ultrasonic probe in which a first temperature sensor and a second temperature sensor are located posterior to an oscillator; and a surface temperature calculation device for calculating a surface temperature of the ultrasonic probe on the basis of a first detection temperature Ta detected by the first temperature sensor and a second detection temperature Tb detected by the second temperature sensor. Also, an ultrasonic diagnostic apparatus includes: an ultrasonic probe in which a first temperature sensor and a second temperature sensor are embedded in a backing material; and a surface temperature calculation device for calculating a surface temperature Ts of the ultrasonic probe on the basis of a first detection temperature Ta detected by the first temperature sensor and a second detection temperature Tb detected by the second temperature sensor. | 08-27-2009 |
20090245323 | Measuring device and method for determining temperature and/or pressure using measuring device (as amended) - At least one transceiver sends ultrasonic pulses through an object, which at least partially transmits ultrasonic pulses, into an element which reflects the ultrasonic pulses. The ultrasonic pulse(s) can be reflected in a temperature-correlated manner from the reflective element to the transceiver. | 10-01-2009 |
20100177801 | METHODS AND SYSTEMS FOR PASSIVE, WIRELESS TEMPERATURE MONITORING - A temperature sensor is described that includes a base, a first set of posts attached to the base having a first coefficient of thermal expansion, a second set of posts attached to the base and having a second coefficient of thermal expansion, and two substantially parallel conductive plates forming a capacitor. The first of the conductive plates is fixed to the first set of posts and the second of the conductive plates is fixed to the second set of posts. Temperature changes cause the first set of posts and the second set of posts to elongate at different rates, thereby changing a distance between the conductive plates and therefore the resulting capacitance. A system and method are also described for determining resonant frequency associated with the sensor which correlates to the temperature at the sensor when multiple sensors are networked across a system. | 07-15-2010 |
20110090935 | METHOD FOR PERFORMING ULTRASONIC TESTING - A method for performing ultrasonic testing comprising, in one embodiment, the steps of firing an ultrasonic transducer to generate an ultrasonic pulse that passes through a delay line, measuring a delay echo time of flight, and determining the temperature of the delay line using the delay echo time of flight, thereby eliminating the need for additional temperature measuring devices. Other embodiments further comprise the step of using the temperature of the delay line to determine the temperature of a test object, and using the temperature of the test object to determine a thickness of the test object that is compensated for thermal expansion and temperature dependent ultrasonic velocity. | 04-21-2011 |
20110150030 | THERMAL SENSORS HAVING FLEXIBLE SUBSTRATES AND USE THEREOF - Methods and apparatuses for Micro-Electro-Mechanical Systems (MEMS) resonator to monitor the platform temperature. Fabricating the resonator on a relatively low cost flexible polymer substrate rather than silicon provides mechanical flexibility as well as design flexibility with respect to sensor placement. Sensor readout and control circuits can be on silicon if desired, for example, a positive feedback amplifier to form an oscillator in conjunction with the resonator and a counter to count oscillator frequency. | 06-23-2011 |
20110150031 | THERMAL SENSOR USING A VIBRATING MEMS RESONATOR OF A CHIP INTERCONNECT LAYER - Methods and apparatuses for Micro-Electro-Mechanical Systems (MEMS) resonator to monitor temperature in an integrated circuit. Fabricating the resonator in an interconnect layer provides a way to implement thermal detection means which is tolerant of manufacturing process variations. Sensor readout and control circuits can be on silicon if desired, for example, a positive feedback amplifier to form an oscillator in conjunction with the resonator and a counter to count oscillator frequency. | 06-23-2011 |
20110222577 | In-Service Monitoring of Steam Pipe Systems at High Temperatures - A system and method for monitoring the properties of a fluid, such as water, in a steam pipe without mechanically penetrating the wall of the pipe. The system uses a piezoelectric transducer to launch an ultrasonic probe signal into the pipe. Reflected ultrasonic signals are captured in a transducer, which can be the same transducer that launched the probe signal. The reflected signals are subjected to data processing, which can include filtering, amplification, analog-to-digital conversion and autocorrelation analysis. A result is extracted which is indicative of a property of the fluid, such as a height of the condensed fluid, a cavitation of the condensed fluid, and a surface perturbation of the condensed fluid. The result can be recorded, displayed, and/or transmitted to another location. One embodiment of the system has been constructed and tested based on a general purpose programmable computer using instructions recorded in machine-readable non-volatile memory. | 09-15-2011 |
20130003779 | WIRELESS MEASURING APPARATUS AND WIRELESS TEMPERATURE MEASUREMENT SYSTEM - There is provided a wireless measuring apparatus that efficiently measures the frequency characteristics of a sensor unit mounted on an object to be measured. The wireless measuring apparatus is a wireless measuring apparatus that measures the frequency characteristics of a sensor unit ( | 01-03-2013 |
20130121373 | ULTRASONIC TEMPERATURE MEASUREMENT DEVICE - An ultrasonic thermometer for measuring a temperature profile along a measurement axis of a solid structure, comprising a continuous measurement pathway of a solid structure ( | 05-16-2013 |
20130343424 | GUIDED WAVE THERMOGRAPHY METHODS AND SYSTEMS FOR INSPECTING A STRUCTURE - Methods and systems ( | 12-26-2013 |
20140016666 | DEVICE FOR MEASURING THE TEMPERATURE OF A VIBRATING BEAM AND APPLICATION TO THE IMPROVEMENT OF THE PRECISION OF MEASUREMENT OF A VIBRATING-BEAM SENSOR - The invention is a device for measuring the temperature of the vibrating beam of a vibrating-beam sensor. It comprises a resonator ( | 01-16-2014 |
20140023109 | TEMPERATURE SENSOR COMPRISING A HIGH-OVERTONE BULK ACOUSTIC RESONATOR - This temperature sensor ( | 01-23-2014 |
20140064326 | NOISE ROBUST TIME OF FLIGHT ESTIMATION FOR ACOUSTIC PYROMETRY - An acoustic signal traversing a hot gas is sampled at a source and a receiver and is represented in overlapping windows that maximize useable signal content. Samples in each window are processed to represented in different sparsified bins in the frequency domain. Determining a signal delay between the source and the receiver from a summation of maximum smoothed coherence transform cross-correlation values of different data windows wherein a sparseness of a mean smoothed coherence transform cross-correlation of windows is maximized. Determining a set of delay times wherein outliers are deleted to estimate a time of flight from which a temperature of the hot gas is calculated. | 03-06-2014 |
20140098835 | TEMPERATURE INFORMATION ASSEMBLY FOR A COOKING HOB - The present invention relates to a temperature information assembly for a cooking hob ( | 04-10-2014 |
20140119403 | APPARATUS AND METHOD FOR MEASURING TEMPERATURE - There are provided an apparatus and a method for measuring a temperature. The apparatus includes: a temperature sensor measuring a temperature and providing the measured temperature; a temperature comparing unit comparing the measured temperature with a preset reference temperature and providing a comparison result signal; a quartz oscillating unit generating an oscillating frequency signal according to temperature; a frequency counting unit counting a frequency of the oscillating frequency signal and providing a frequency count value; and a signal processing unit determining a temperature according to the comparison result signal and the frequency count value. | 05-01-2014 |
20140198822 | APPARATUS AND METHOD FOR DETERMINING TEMPERATURE - An apparatus and method for determining temperature is disclosed. An ultrasonic signal is generated that propagates through a buffer and a portion of the signal is reflected at an interface. A time of flight is measured between generating the ultrasonic signal and detecting the reflected portion. The temperature is determined based on the time of flight of the reflected signal. | 07-17-2014 |
20140294042 | SEMICONDUCTOR TEMPERATURE SENSORS - A temperature sensing device for an integrated circuit comprises an oscillator ( | 10-02-2014 |
20140355646 | PIEZOELECTRIC DEVICE PACKAGE AND METHOD OF FABRICATING THE SAME - A piezoelectric device package may include: a case having a plurality of terminals disposed on a lower surface thereof; a piezoelectric device disposed in the case; a temperature measuring device disposed on one surface of the piezoelectric device in the case and having a thin film form; and a cover member enclosing an upper portion of the case. | 12-04-2014 |
20140355647 | PIEZOELECTRIC DEVICE PACKAGE AND METHOD OF FABRICATING THE SAME - A piezoelectric device package may include: a case having a plurality of terminals formed on a lower surface thereof; a piezoelectric device formed in the case; a temperature measuring device formed on the lower surface of the case and having a thin film form; and a cover member enclosing an upper portion of the case. | 12-04-2014 |
20150023388 | QUARTZ-TEMPERATURE-MEASUREMENT PROBE AND QUARTZ-TEMPERATURE-MEASUREMENT DEVICE - A crystal oscillator ( | 01-22-2015 |
20150030050 | ULTRASONIC TEMPERATURE MEASUREMENT DEVICE - An ultrasonic thermometer for measuring a temperature profile along a measurement axis of a structure, comprising a continuous measurement pathway of a structure ( | 01-29-2015 |
20150049785 | TEMPERATURE DETECTION DEVICE FOR DETECTING THE BOTTOM TEMPERATURE OF COOKWARE ON A COOKING HOB - The present invention relates to a temperature detection device for detecting the bottom temperature of cookware on a cooking hob ( | 02-19-2015 |
20150146759 | TEMPERATURE SENSING USING DISTRIBUTED ACOUSTIC SENSING - An embodiment of a method of measuring temperatures includes: taking distributed acoustic sensing (DAS) measurement data by transmitting interrogation signals into an optical fiber disposed in an environment of interest, and receiving reflected signals over a selected time period from the optical fiber; processing the DAS measurement data to separate components of the DAS data associated with changes in temperature; and generating a temperature change profile for the selected time period based on the separated components of the DAS data. | 05-28-2015 |
20150346039 | SENSOR TAG AND MANUFACTURING METHOD FOR SENSOR TAG - A sensor tag ( | 12-03-2015 |
20150355035 | IN-PACKAGE TEMPERATURE SENSOR AND METHODS THEREFOR - This disclosure relates generally to an electronic assembly and methods that include a dielectric material forming a cavity, a magnet positioned to induce a magnetic field within the cavity, a conductive trace positioned, at least in part, within the cavity, and a frequency detection circuit configured to detect the frequency of the maximal electromotive force as induced and produce an output proportional to a temperature of the conductive trace. The conductive trace resonates within the cavity based on a temperature-dependent resonant frequency of the conductive trace and a sinusoidal current induced through the conductive trace by a current source, the sinusoidal current induces a maximal electromotive force when a frequency of the sinusoidal current has an approximately equal magnitude to the temperature-dependent resonant frequency of the conductive trace, and the maximal electromotive force, as induced, has a substantially equal frequency as the temperature-dependent resonant frequency of the conductive trace. | 12-10-2015 |
20150362377 | PHYSICAL QUANTITY MEASURING DEVICE AND PHYSICAL QUANTITY MEASURING SYSTEM - An excitation signal generation unit generates excitation signals of frequency channels with mutually different frequency bands and transmits the excitation signals via an antenna. Reception signals of the frequency channels received by the antenna are inputted to a reception strength detection unit. The reception strength detection unit detects a resonance reverberation signal from the reception signals and detects the signal strength of the resonance reverberation signal. An excitation control unit controls the excitation signal generation unit to adjust the signal strength of the excitation signal such that the signal strength of the resonance reverberation signal reaches or falls below a level adjustment threshold. Upon the signal strength of the resonance reverberation signal reaching or falling below the level adjustment threshold, a temperature detection unit subjects the resonance reverberation signal to a frequency analysis so as to detect a physical quantity on the basis of a frequency spectral peak. | 12-17-2015 |
20160018270 | Use Of Aluminum Nitride To Obtain Temperature Measurements In A High Temperature And High Radiation Environment - An aluminum nitride piezoelectric ultrasonic transducer successfully operates at temperatures of up to 1000° C. and fast (>1 MeV) neutron fluencies of more than 10 | 01-21-2016 |
20160025577 | Differential temperature surface sensor - This sensor, comprises: a first surface acoustic wave device, comprising a first piezoelectric substrate, formed from a (YXw/t)/φ/θ/ψ cut of a Langasite crystal, where φ is equal to 0±5° is equal to 55±20° and ψ is equal to 32.5±7.5° and a first resonator having a first transducer laying on a first propagation surface and having two sets of interdigitated first electrodes formed from an electrically conductive material having a high melting temperature; and a second surface acoustic wave device, comprising a second piezoelectric substrate, formed from a (YXw/t)/φ/θ/ψ cut of a Langasite crystal, where φ is equal to 0±5°, θ is equal to 5±20° and ψ is equal to 0±7.5°, and a second resonator having a second transducer laying on a second propagation surface and having two sets of interdigitated second electrodes formed from an electrically conductive material having a high melting temperature; said first and second surface acoustic wave devices being independent one from the other in terms of surface acoustic wave propagation. | 01-28-2016 |
20160046055 | PLASTICIZING UNIT FOR AN INJECTION MOLDING MACHINE - A plasticizing unit ( | 02-18-2016 |
20160178441 | THERMOWELL SYSTEM WITH VIBRATION DETECTION | 06-23-2016 |
20160252406 | TEMPERATURE SENSOR USING PIEZOELECTRIC RESONATOR AND METHODS OF MEASURING TEMPERATURE | 09-01-2016 |
374119000 | Vibration velocity (e.g., echo timing) | 9 |
20080298427 | Device Comprising a Piezoelectric Resonator Element, Method for Producing the Same and Method for Outputting a Signal Depending on a Resonant Frequency - The invention relates to a device ( | 12-04-2008 |
20090122830 | SURFACE ACOUSTIC WAVE TRANSPONDERS - The field of the invention is that of surface acoustic wave transponders and associated devices. This invention applies more particularly to the techniques for identifying and locating transponders. It also applies to the transmission of information or measurements, the transponder then being used as a transducer. This type of transponder can, in particular, be used on vehicles, and in particular on road vehicles. The inventive transponder ( | 05-14-2009 |
20090268776 | Piezoelectric Resonator and Temperature Sensor - An object of the present invention is to provide a piezoelectric resonator provided with a electrode on the surface of a plate piezoelectric blank, which excites the piezoelectric blank, the piezoelectric resonator being capable of suppressing deterioration of an electrode under high temperature circumstances. Another object is to provide a temperature sensor suitable for temperature measurement at high temperatures. | 10-29-2009 |
20090279581 | Temperature Sensor and Extensometer for Electrical Power Cables - A thermometer and extensometer for cables and conductors is described. The travel time of one or more acoustic signals along a conductor is used to determine the temperature along the conductor and the length of the conductor. The acoustic frequency is selected to minimize temporal dispersion of the propagating acoustic energy. The technique can be used to measure the temperature of the windings in a transformer or other electrical apparatus. | 11-12-2009 |
20090279582 | Temperature Sensor and Extensometer for Electrical Power Cables - A thermometer and extensometer for cables and conductors is described. The travel time of one or more acoustic signals along a conductor is used to determine the temperature along the conductor and the length of the conductor. The acoustic frequency is selected to minimize temporal dispersion of the propagating acoustic energy. The technique can be used to measure the temperature of the conductor in a buried, undersea or submerged electrical power cable. | 11-12-2009 |
20100046576 | METHOD FOR PERFORMING ULTRASONIC TESTING - Methods of performing ultrasonic testing are disclosed, comprising the step of determining a temperature gradient of an ultrasonic wedge. In one embodiment of the invention, the method further comprises the steps of determining a sound velocity gradient of the ultrasonic wedge to determine the time it takes for sound waves emanating from a plurality of ultrasonic transducer elements attached to the ultrasonic wedge to reach a point of interest within a test object, and firing each of the ultrasonic transducer elements in a timed sequence based on the times such that sound waves from each of the ultrasonic transducer elements reach the point of interest at the same time. In other embodiments of the invention, the total attenuation and acoustic impedance of a sound wave traveling through the ultrasonic wedge is determined to adjust the amplitude of the sound wave such that the sound wave has sufficient amplitude to perform the ultrasonic testing. | 02-25-2010 |
20150043612 | METHOD FOR HEAT QUANTITY MEASUREMENT WITH AN ULTRASONIC, FLOW MEASURING DEVICE - A method and apparatus for heat quantity measurement, wherein, with an ultrasonic, flow measuring device, which works according to the travel time difference principle, the flow of a fluid of known chemical composition through the lumen of a pipeline is ascertained, and wherein the temperature of the fluid before and after a heat transferer is ascertained, wherein, for a first ascertaining of the temperature of the fluid, the velocity of sound in the fluid is ascertained with the ultrasonic, flow measuring device and a temperature is ascertained outside of the lumen of the pipeline. | 02-12-2015 |
20150063411 | NON-INTRUSIVE MEASURMENT OF HOT GAS TEMPERATURE IN A GAS TURBINE ENGINE - A method and apparatus for operating a gas turbine engine including determining a temperature of a working gas at a predetermined axial location within the engine. An acoustic signal is encoded with a distinct signature defined by a set of predetermined frequencies transmitted as a non-broadband signal. Acoustic signals are transmitted from an acoustic transmitter located at a predetermined axial location along the flow path of the gas turbine engine. A received signal is compared to one or more transmitted signals to identify a similarity of the received signal to a transmitted signal to identify a transmission time for the received signal. A time-of-flight is determined for the signal and the time-of-flight for the signal is processed to determine a temperature in a region of the predetermined axial location. | 03-05-2015 |
20150078416 | DIFFERENTIAL ACOUSTIC TIME OF FLIGHT MEASUREMENT OF TEMPERATURE OF SEMICONDUCTOR SUBSTRATES - Disclosed is a method and apparatus for measuring semiconductor substrate temperature using a differential acoustic time of flight measurement technique. The measurement is based on measuring the time of flight of acoustic (ultrasonic) waves across the substrate, and calculating a substrate temperature from the measured time of flight and the known temperature dependence of the speed of sound for the substrate material. The differential acoustic time of flight method eliminates most sources of interference and error, for example due to varying coupling between an ultrasonic transducer and the substrate. To further increase the accuracy of the differential acoustic time of flight measurement, a correlation waveform processing algorithm is utilized to obtain a differential acoustic time of flight measurement from two measured ultrasonic waveforms. To facilitate signal recognition and processing, a symmetric Lamb mode may be used as mode of excitation of the substrate. | 03-19-2015 |