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| Number | Title | Issue Date |
| 7434988 | Low pressure acoustic pyrometer signal generator An acoustic pyrometer measures the average gas temperature across a space of known distance, especially turbulent, high temperature gas loaded with caustic particulates. It includes an acoustic signal generator that generates a high amplitude acoustic signal with a ... | 10/14/2008 |
| 7404671 | Dynamic acoustic thermometer Acoustic temperature measurement at a remote location is provided. An acoustic source transmits acoustic radiation to an acoustic receiver along an acoustic path. The path passes through or near the remote location. The temperature is non-uniform along the path. A c... | 07/29/2008 |
| 7371601 | Piezoresistive sensing structure A technique for manufacturing a piezoresistive sensing structure includes a number of process steps. Initially, a piezoresistive element is implanted into a first side of an assembly that includes a semiconductor material. A passivation layer is then formed on the f... | 05/13/2008 |
| 7288922 | Control apparatus for automotive alternator having capability to accurately detect temperature of alternator A control apparatus for a vehicle generator includes a switch, a regulator, a fault condition detector, and a PWM signal generator. The switch is selectively turned on and off so as to intermittently excite the generator. The regulator controls on/off operation of t... | 10/30/2007 |
| 7274002 | Heating element induction of time-varying thermal gradient in elongated beam to cause one or more elongated beam oscillations One or more heating elements comprise a heating element. One or more elongated beams comprise an elongated beam. The heating element is coupled with the elongated beam and induces a time-varying thermal gradient in the elongated beam to cause one or more oscillation... | 09/25/2007 |
| 7260977 | Self-diagnosis of a vibrating level gauge Described is a method for detecting and/or for monitoring the level of a medium stored in a vessel and in particular to a method for diagnosing the functionality of the electromechanical oscillation unit of a vibration level gauge. An electromechanical transducer of... | 08/28/2007 |
| 7261461 | Measuring and trimming circuit components embedded in micro-platforms There is described a method and sub-circuit to measure temperature coefficients (coefficient of variation of a measurable parameter of the component), by using a thermally-isolated silicon micro-platform with a mass of mono-crystalline silicon suspended from it. The... | 08/28/2007 |
| 7128082 | Method and system for flow control with fluidic oscillators A system for control of a fluid flow. The system includes an array of fluidic oscillators. Each fluidic oscillator carries an oscillating flow of the fluid and includes a throat, an input port connected to the throat, two control ports connected to the throat and tw... | 10/31/2006 |
| 7127936 | Acoustic analysis of gas mixtures An acoustic gas analyzer for gas mixture has an acoustic velocity meter that provides a first output dependent on a detected transmission of acoustic energy through a gas to be analyzed, a temperature probe having a probe time constant that provides a second output ... | 10/31/2006 |
| 7105354 | Analyzer An analyzer characterized by comprising a chip and a detector, wherein the chip is an organic polymer member having a fine capillary through which a fluid sample or a fluid sample and a fluid reagent flow and can perform a chemical reaction on the sample in the capi... | 09/12/2006 |
| 6979118 | Estimating combustor flame temperature based on frequency of combustor dynamics transverse mode A method of determining the temperature inside a combustion liner without making a direct measurement of the actual temperature. The technique is based on a measurement of the frequency of one of the transverse acoustic modes occurring inside the combustion chamber.... | 12/27/2005 |
| 6964518 | Device and system for monitoring internal temperature of inaccessible or moving parts A device and a system for measuring temperature in an inaccessible and/or movable mechanical part. The device comprises a temperature-sensitive clement which can be installed inside the movable part and which is designed to emit a signal containing information on th... | 11/15/2005 |
| 6922065 | Coil impendance detection method and object detection method and apparatus using the same A triangular wave generating circuit (21) generates a sweep voltage of a triangular wave, a VCO (22) generates a sweep of a frequency according to the sweep voltage, and a driving coil (4) is driven by the sweep voltage. From the current flowing... | 07/26/2005 |
| 6834992 | Acoustic pyrometer An acoustic pyrometer measures the average gas temperature across a wide space of known distance, especially turbulent, high temperature gas loaded with caustic particulates. It includes an acoustic signal generator that generates a high amplitude acoustic signal wi... | 12/28/2004 |
| 6769804 | Temperature measuring method, object detecting method and object detecting device with vibrating-type level sensor A magnet is provided to a vibrating plate within a detection pipe unit and an electromagnet is placed opposite to the magnet with a slight gap therebetween. A drive circuit applies, to a coil at every predetermined measurement cycle, an alternating current at a freq... | 08/03/2004 |
| 6764215 | Method, a measuring cell and a system for measuring very small heat changes in a sample The present invention relates to a method, a measuring cell and a system for measuring very small heat changes in a sample. The system comprises a measuring cell 16 for containing the sample during the measurement process, at least one electromagnetic radiati... | 07/20/2004 |
| 6726358 | Acoustic pyrometer An acoustic pyrometer measures the average gas temperature across a wide space of known distance, especially turbulent, high temperature gas loaded with caustic particulates. It includes an acoustic signal generator that generates a high amplitude acoustic signal wi... | 04/27/2004 |
| 6386755 | Acoustic pyrometer An acoustic pyrometer measures the average gas temperature across a wide space of known distance, especially turbulent, high temperature gas loaded with caustic particulates. It includes an acoustic signal generator that generates a high amplitude acousti... | 05/14/2002 |
| 6126311 | Dew point sensor using mems A dew point sensor includes a micro-cantilever beam formed on a substrate. A cooling device and a temperature sensor are in thermal contact with the micro-cantilever beam and a control circuit is coupled to the micro-cantilever beam, the cooling device an... | 10/03/2000 |
| 6039472 | Method for measuring the temperature of a metallurgical furnace using an acoustic noise parameter and rate of consumption of electrical power A method for measuring the temperature of a metallurgical furnace. An empirical relationship is established that connects the temperature, an operating parameter of the furnace that is causally connected with the generation of acoustic noise, and a repres... | 03/21/2000 |
| 5772322 | Resonant microbeam temperature sensor A temperature sensing device employs a resonant polysilicon beam, in combination with electrical circuitry for oscillating the beam at its natural resonant frequency, to sense changes in temperature. The resonant beam is formed as part of a silicon layer,... | 06/30/1998 |
| 5511427 | Cantilevered microbeam temperature sensor Measuring devices employing resonant strain gauges, e.g. pressure transducers or accelerometers, are compensated for variation in temperature by employing a secondary resonant microbeam in combination with the primary microbeam of the strain gauge. The se... | 04/30/1996 |
| 5141331 | Ultrasonic temperature measurement and uses in optical spectroscopy and calorimetry A process and apparatus for the photothermal and/or calorimetric investigation of gaseous, liquid and solid measuring material is based on the detuning of an ultrasonic resonator (1). The latter has an ultrasonic transmitter (2) and an ultrasonic receiver... | 08/25/1992 |
| 4196626 | Flueric notch filter temperature or density sensor The temperature sensors shown utilize a constant frequency fluidic oscillr to excite resonance tubes, whose frequency response is a function of temperature. The outputs of these sensors control a fluidic amplifier, whose output is rectified and filtered ... | 04/08/1980 |
| 4046008 | Fluidic temperature sensor A fluidic oscillator temperature sensor assembly for determining the average temperature of a stream of flowing gas in a conduit such as the turbine inlet of a gas turbine engine comprises a source of pressurized gas, a fluid amplifier connected to the so... | 09/06/1977 |
| 4020693 | Acoustic transducer for nuclear reactor monitoring A transducer to monitor a parameter and produce an acoustic signal from which the monitored parameter can be recovered. The transducer comprises a modified Galton whistle which emits a narrow band acoustic signal having a frequency dependent upon the para... | 05/03/1977 |
