At Plural Zones Patents (Class 374/166)
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Patent number: 7347621Abstract: A method (and system) of predicting a thermal state of a transient thermal system, includes combining sensor outputs and thermal parameters to construct a consistent set of estimates of internal temperature of a transient thermal system.Type: GrantFiled: July 16, 2004Date of Patent: March 25, 2008Assignee: International Business Machines CorporationInventors: Sri M. Sri-Jayantha, Hien P. Dang, Arun Sharma
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Patent number: 7329043Abstract: An apparatus for testing properties of a product comprising a thermal barrier layer comprises an ignition source, a test stand that extends a sample of the product over the ignition source, and a means for measuring thermal transfer across the sample. The apparatus may further comprise a means for measuring thermal transfer across each layer of the sample. A method for testing properties of a product comprising a thermal barrier layer comprises supporting a sample of the product over an ignition source, heating the sample via the ignition source, and determining a thermal differential across the sample. The method may further comprise determining a thermal differential across each layer of the sample.Type: GrantFiled: November 4, 2004Date of Patent: February 12, 2008Assignee: L&P Property Management CompanyInventors: Steven E. Ogle, Kenneth C. Thompson, D. Patrick Steagall, James Eric DeBord
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Patent number: 7329044Abstract: Temperature states of a clinical thermometer body and an environment are estimated by temperatures measured by a first temperature sensor integrally formed together with an infrared sensor arranged to the distal end of a probe and a second temperature sensor arranged on the bottom side of a probe holder, and processes suitable for the respective temperature states are performed. An estimation error or the reliability of an estimation value is calculated by the temperatures to notify a user of the estimation error or the reliability by an LCD or the like.Type: GrantFiled: June 23, 2004Date of Patent: February 12, 2008Assignee: Omron Healthcare Co., Ltd.Inventors: Taiga Sato, Hiroyuki Ota, Tetsuya Sato, Yoshihide Onishi
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Publication number: 20070195854Abstract: A performance testing apparatus for a heat pipe includes an immovable portion having a first heating member located therein for heating an evaporating section of a heat pipe requiring testing. A movable portion is capable of moving relative to the immovable portion and has a second heating member located therein for heating the evaporating section of the heat pipe. A receiving structure is defined between the immovable portion and the movable portion for receiving the evaporating section of the heat pipe therein. Temperature sensors are attached to the immovable portion and the movable portion for detecting temperature of the heat pipe. An enclosure encloses the immovable portion and the movable portion therein and has sidewalls thereof slidably contacting at least one of the immovable portion and the movable portion.Type: ApplicationFiled: August 29, 2006Publication date: August 23, 2007Applicant: Foxconn Technology Co., Ltd.Inventors: Tay-Jian Liu, Chuen-Shu Hou, Chao-Nien Tung, Qian-Hua He
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Patent number: 7249883Abstract: A deep-area temperature calculating device 441 calculates the temperature Tcore of a deep area on the basis of a first body-surface temperature and second body-surface temperature from body-surface sensors 31A and 31B, and on the basis of a first intermediate temperature and second intermediate temperature from intermediate sensors 32A and 32B. Since the temperature Tcore of the deep area is determined from two body-surface temperatures and two intermediate temperatures, the temperature Tcore of the deep area can be calculated regardless of the heat resistance of the thermometer without making any assumptions regarding the heat resistance of the area that extends from the deep area of the human body to the body surface. Thereby, the temperature Tcore of the deep area can be calculated and the body temperature can be measured with high precision regardless of differences in the body type or contact with clothing or bedding.Type: GrantFiled: September 13, 2005Date of Patent: July 31, 2007Assignee: Seiko Epson CorporationInventors: Masao Kuroda, Naoki Ishibashi, Yutaka Kobayashi
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Patent number: 7234864Abstract: The cold junction temperature of the channels on a multi-channel terminal block are accurately determined for each terminal pair without affixing a thermistor to each terminal. One embodiment provides accurate cold junction measurement of a six channel device (12 terminals) by mounting or directly affixing only three sensors (e.g., thermistors). The present technique decreases cost by reducing the number of sensors to less than the number of channels or terminals, while providing for accurate cold junction measurement at each channel.Type: GrantFiled: September 30, 2004Date of Patent: June 26, 2007Assignee: Rockwell Automation Technologies, Inc.Inventor: Steven R. Streicher
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Patent number: 7181357Abstract: Briefly, a processor and a method to calibrate a temperature reading of a digital thermometer. The calibration is done by using a first temperature value measured by an analog temperature sensor located at one point on the processor die and a second temperature value measured by a digital temperature sensor located at a second point of the processor die.Type: GrantFiled: September 8, 2005Date of Patent: February 20, 2007Assignee: Intel CorporationInventors: Efraim Rotem, Barnes Cooper, Ben Karr, Ravi Rangarajan
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Patent number: 7121718Abstract: In a method for detecting defects in sheet metal segments of electric generators and motors, wherein between the sheet metal pieces of the sheet metal segment an electric insulating layer is arranged, respectively, and wherein between the sheet metal segments a cooling channel is provided, respectively, magnetic induction is generated within the sheet metal segments by applying externally a magnetic field and the temperature of the heat generated within the sheet metal segment is measured in the cooling channel.Type: GrantFiled: April 27, 2005Date of Patent: October 17, 2006Assignee: Sensoplan AktiengesellschaftInventor: Gunter Ebi
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Patent number: 7018095Abstract: A circuit for sensing on-die temperature at multiple locations using a minimum number of pins is described. Thermal diodes coupled to pins are placed on a die to measure the temperature at various die locations. Voltage is applied to the pins to determine the temperature at each given diode location. The polarity of the voltage applied across the pins determines what diodes are selected for measurement.Type: GrantFiled: June 27, 2002Date of Patent: March 28, 2006Assignee: Intel CorporationInventors: Dean J. Grannes, Harjinder Singh, Jason A. Gayman
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Patent number: 7004625Abstract: An approach for digitally measuring temperature in support of a monitoring application is disclosed. Multiple probes, according to one embodiment, are deployed for sensing environmental parameters (e.g., temperature, liquid level, flow). Each probe has a thermally conductive cylindrical housing containing one or more digital temperature sensors. In addition, one of the probes includes analog inputs (e.g., Brix probe, level sensor, and flow sensor). The probes share a common fixed size bus and communicates data from the sensors to a controller. Based upon the collected data, the controller can initiate, for example, a pump-over in a winemaking process. The controller can interface with a data network to a monitoring system configured to store and analysis the collected data. The monitoring system supports access of the stored data over a public data network, such as the global Internet.Type: GrantFiled: May 21, 2003Date of Patent: February 28, 2006Assignee: Acrolon Technologies, Inc.Inventor: Paul B. Egidio
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Patent number: 6991367Abstract: A circuit for determining temperature of an active semiconductor device disposed on a semiconductor substrate and a Wheatstone bridge circuit. The bridge has in each of four branches thereof a thermal sensitive device, one pair of such thermal sensitive devices being in thermal contact with an electrode of the active device. Another pair of such thermal sensitive devices is in thermal contact with the substrate. The thermal sensitive devices are resistors. The active device is a transistor. A tuning circuit is coupled to an output of the transistor, such tuning circuit having a tunable element controlled by a control signal fed to such tunable element. A processor is responsive to a voltage produced at an output of the Wheatstone bridge circuit and a signal representative of power fed to the transistor. The output provided by the Wheatstone bridge provides a measure of a temperature difference between the temperature of the transistor and ambient temperature.Type: GrantFiled: November 4, 2003Date of Patent: January 31, 2006Assignee: Raytheon CompanyInventor: Michael G. Adlerstein
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Patent number: 6916290Abstract: An in situ breast tumor temperature profile measuring probe includes a rod, thermal sensors and electrical output leads. The thermal sensors are formed in spaced apart holes in an outer insulating layer of the rod and a common electrical input lead to provide an electrical input signal to the thermal sensors is disposed below and has portions exposed at the holes and electrically connected to the thermal sensors. The thermal sensors receive the electrical input signal from the common electrical input lead, sense the temperature of biological matter adjacent to the thermal sensors and produce an electrical output signal correlated thereto. Each electrical output lead mounted to the outer insulating layer is in electrical contact with a different one of the thermal sensors to receive the electrical output signal from the one thermal sensor and output the same.Type: GrantFiled: March 5, 2002Date of Patent: July 12, 2005Assignee: General Electric CompanyInventors: Kristina Helena Valborg Hedengren, William Paul Kornrumpf, Mark Lloyd Miller, Egidijus Edward Uzgiris
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Patent number: 6908227Abstract: An apparatus for managing the temperature of an integrated circuit having a multiple core microprocessor is described. Specifically, thermal sensors are placed at potential hot spots throughout each microprocessor core. A thermal management unit monitors the thermal sensors. If a thermal sensor identifies a hot spot, the thermal management unit adjusts the operating frequency and voltage of that microprocessor core accordingly.Type: GrantFiled: August 23, 2002Date of Patent: June 21, 2005Assignee: Intel CorporationInventors: Stefan Rusu, Simon M. Tam
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Patent number: 6890095Abstract: A multipoint temperature sensor for measuring fluid temperature in a duct includes multiple thermistors of equal resistance, spaced apart in a circuit. Each thermistor has a positive lead and a negative lead for connecting electrically with the circuit. Wires connect the thermistors such that half of the thermistors are placed in parallel with the other half of the thermistors. The total number of thermistors in the circuit is a perfect square. Shrinkwrap fits over the thermistors and the leads. Tabs disposed on bridging clips bend around the shrinkwrap and the wires on either side of each thermistor such that the tabs do not overlap the leads. All the wires between adjacent thermistors are contained in a single, plenum rated sheathing.Type: GrantFiled: April 1, 2003Date of Patent: May 10, 2005Assignee: Mamac Systems, Inc.Inventor: S. Asim Gul
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Patent number: 6773158Abstract: In a method apparatus for measuring the temperature of a semiconductor substrate during processing thereof in a processing chamber, a resonant circuit formed on the substrate surface is energized by an electromagnetic field radiation device, and disturbances in the electromagnetic field are detected to determine the resonant frequency of the resonant circuit. The temperature of the substrate is determined as a function of the resonant frequency. The substrate is moved into and out of processing chamber by a transfer arm, and the radiation device is disposed on the transfer arm or mounted on the processing chamber. Multiple resonant circuits may be provided, which are energized by movement of the transfer arm, without transferring the substrate.Type: GrantFiled: August 14, 2002Date of Patent: August 10, 2004Assignee: Tokyo Electron LimitedInventor: Chishio Koshimizu
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Patent number: 6769805Abstract: A heater cable is deployed in a well bore to elevate the temperature of the wellbore above the temperature of the surrounding fluid and the formation. One or more fiber optic strings are included in or carried by the heater cable which is placed along a desired length of the wellbore. At least one fiber optic string measures temperature of the heater cable at a plurality of spaced apart locations. Another string is utilized to determine the temperature of the wellbore. The heater cable is heated above the temperature of the well bore. The fluid flowing from the formation to the wellbore lowers the temperature of the cable at the inflow locations. The fiber optic string provides measurements of the temperature along the heater cable. The fluid flow is determined from the temperature profile of the heater cable provided by the fiber optic sensors.Type: GrantFiled: December 17, 2002Date of Patent: August 3, 2004Assignee: Sensor Highway LimitedInventors: Glynn R Williams, David H Neuroth, Larry V Dalrymple
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Patent number: 6695469Abstract: Improved roadway freezing point monitoring systems and methods include improved sample wells for the accurate measurement of the freezing point of liquid on a roadway, the use of temperature sensors that require only two conductors to receive power and to send and receive digital address and temperature information, improved algorithms for detecting the freeze point of liquid on the roadway, the use of conductivity measurements to verify detected freeze points, and the transmission of temperature information via the Internet to remote computers.Type: GrantFiled: November 19, 2001Date of Patent: February 24, 2004Assignee: Energy Absorption Systems, Inc.Inventor: Patrick A. Leonhardt
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Patent number: 6655835Abstract: The apparatus which is located separately from the RTD includes means for measuring the resistance of a plurality of RTDs present at a selected site, the RTDs being those of a number of different RTD types. The module includes means for storing the resistance/temperature map for each of the plurality of RTDs and for determining the temperatures associated with said resistances from the resistance/temperature maps. The resulting plurality of temperatures for each RTD, respectively, is then transmitted in a known order to a remote protective relay which determines the correct temperature for each RTD connected to the module.Type: GrantFiled: December 21, 1999Date of Patent: December 2, 2003Assignee: Schweitzer Engineering Laboratories Inc.Inventors: Carl Vincent Mattoon, David James Dolezilek
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Patent number: 6641304Abstract: A hose for carrying liquid, such as hot melt adhesive, within a predetermined elevated temperature range. The hose includes a tube or body portion which has an inlet end adapted to connect to a source of liquid, such as a supply tank, and a discharge end adapted to a connect to a liquid dispensing apparatus, such as an adhesive dispensing gun. At least two temperature sensing devices, each having an output end, are also operatively associated with the tube to sense the temperature of the liquid therein. An adapter has a first end selectively connected to the output end of the first temperature sensing device. The adapter also has a second end adapted to connect to a controller which is compatible with the first temperature sensing device and not the second temperature sensing device. With the first temperature sensing device connected to the adapter, it is operative to sense the temperature of the liquid in the tube.Type: GrantFiled: October 26, 2000Date of Patent: November 4, 2003Assignee: Nordson CorporationInventors: Jonathia Ang, Randall Richardson, Paul Schmidt
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Patent number: 6599011Abstract: A temperature sensing assembly utilizing a multipoint thermocouple. The assembly comprises a vessel, e.g. a chemical reaction pressure vessel, into which a thermocouple is inserted. The thermocouple utilizes an elongated sheath having a plurality of sensors therein. The sensors are arranged to detect temperature at a plurality of unique locations within the vessel.Type: GrantFiled: April 26, 2001Date of Patent: July 29, 2003Assignee: Daily ThermetricsInventors: Jeffrey N. Daily, Robert F. Poteet, Michael W. Rahn, Larry D. Welch
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Patent number: 6592254Abstract: A multipoint temperature sensor for measuring fluid temperature in a duct includes multiple thermistors of equal resistance, spaced apart in a circuit. Each thermistor has a positive lead and a negative lead for connecting electrically with the circuit. Wires connect the thermistors such that half of the thermistors are placed in parallel with the other half of the thermistors. The total number of thermistors in the circuit is a perfect square. Shrinkwrap fits over the thermistors and the leads. Tabs disposed on bridging clips bend around the shrinkwrap and the wires on either side of each thermistor such that the tabs do not overlap the leads. All the wires between adjacent thermistors are contained in a single, plenum rated sheathing.Type: GrantFiled: June 26, 2001Date of Patent: July 15, 2003Assignee: Mamac Systems, Inc.Inventor: S. Asim Gul
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Patent number: 6579005Abstract: A method for determining oxidation in turbine buckets allows for conditional based maintenance of the turbine buckets. The method includes measuring a temperature of a turbine bucket and comparing the measured temperature to a temperature of a reference turbine bucket to determine the condition of the bucket. The method provides useful temperature data to determine if the turbine should be stopped and the bucket serviced. This method may be used in place of interval based maintenance to increase bucket life, reduce bucket failure, and increase turbine operating time.Type: GrantFiled: December 28, 2000Date of Patent: June 17, 2003Assignee: General Electric CompanyInventor: Michael David Ingallinera
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Patent number: 6575623Abstract: The present invention may be embodied in a device for detection of vulnerable plaque in a vessel based on a temperature increase of the vessel's wall. The device may be a guide wire having an extendable assembly having resilient delivery wires for placing the temperature sensor in contact with the vessel's inner wall.Type: GrantFiled: October 1, 2001Date of Patent: June 10, 2003Assignee: Cardiostream, Inc.Inventor: Randell L. Werneth
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Publication number: 20030103547Abstract: Improved roadway freezing point monitoring systems and methods include improved sample wells for the accurate measurement of the freezing point of liquid on a roadway, the use of temperature sensors that require only two conductors to receive power and to send and receive digital address and temperature information, improved algorithms for detecting the freeze point of liquid on the roadway, the use of conductivity measurements to verify detected freeze points, and the transmission of temperature information via the Internet to remote computers.Type: ApplicationFiled: November 19, 2001Publication date: June 5, 2003Applicant: Energy Absorption Systems, Inc.Inventor: Patrick A. Leonhardt
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Patent number: 6550963Abstract: A multipoint thermocouple for sensing temperature. The thermocouple comprises a sheath having a plurality of conductor pairs disposed within the sheath. Each conductor pair has two conductors of dissimilar materials joined at a unique junction point along the sheath. The unique junction points permit sensing of temperature at different locations along the length of the multipoint thermocouple.Type: GrantFiled: April 26, 2001Date of Patent: April 22, 2003Assignee: Daily InstrumentsInventors: Jeffrey N. Daily, Robert F. Poteet, Michael W. Rahn, Larry D. Welch
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Patent number: 6536945Abstract: A heat flux measuring device for transporting through a heated chamber, the device having an array of sensors, each sensor comprising first and second surfaces bounding a region, a thermally insulating layer substantially occupying said region, and means for providing a signal which is a measure of the temperature difference across the layer. The said first surface of each sensor is in thermal contact with a heat sink and the said second surface of each sensor is exposed.Type: GrantFiled: October 1, 2001Date of Patent: March 25, 2003Assignee: United Biscuits (UK) LimitedInventor: Robert Mitchell Rolston
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Patent number: 6520675Abstract: An oven analyzer for profiling a conveyor oven is disclosed that accurately and precisely determines the physical characteristics of an oven and stores such information so that it can be outputted to a computer for analysis. In one embodiment, the oven analyzer includes a pallet that moves through the conveyor oven. The pallet houses an electronic data logger that is coupled to multiple sensors. The electronic data logger has memory for storing information obtained from the sensors. A first sensor is a temperature sensor that detects the ambient temperature within the oven. A second sensor is mounted within a metal mass of known thermal characteristics and detects the ovens ability to heat an object. A third sensor detects the position of the pallet within the oven. The electronic data logger stores the data received from the sensors in the memory for selective output to a computer for analysis or printing.Type: GrantFiled: December 27, 2001Date of Patent: February 18, 2003Assignee: Electronic Controls Design, Inc.Inventors: Rex L. Breunsbach, Paul M. Austen
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Patent number: 6511223Abstract: A sensor link is disclosed that simplifies connections between multiple temperature sensors positioned on a test board and a data logger that stores temperature information received from the temperature sensors while passing through the conveyor oven. In one embodiment, the sensor link includes multiple input ports for connecting to the temperature sensors. Conductors within the sensor link connect the multiple temperature sensors to an output port. In one aspect, a single cable extends between the sensor link and a data logger. The data logger stores temperature information received from the temperature sensors while the test board is passed through a conveyor oven. The sensor link can also have additional temperature sensors for providing additional temperature information about the conveyor oven. For example, an ambient temperature sensor may be positioned on the sensor link to provide the ambient temperature of the conveyor oven.Type: GrantFiled: November 10, 2000Date of Patent: January 28, 2003Assignee: Electronic Controls Design, Inc.Inventors: Paul M. Austen, Rex L. Breunsbach
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Publication number: 20030016730Abstract: A multipoint thermocouple for sensing temperature. The thermocouple comprises a sheath having a plurality of conductor pairs disposed within the sheath. Each conductor pair has two conductors of dissimilar materials joined at a unique junction point along the sheath. The unique junction points permit sensing of temperature at different locations along the length of the multipoint thermocouple.Type: ApplicationFiled: April 26, 2001Publication date: January 23, 2003Inventors: Jeffrey N. Daily, Robert F. Poteet, Michael W. Rahn, Larry D. Welch
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Publication number: 20020196837Abstract: A multipoint temperature sensor for measuring fluid temperature in a duct includes multiple thermistors of equal resistance, spaced apart in a circuit. Each thermistor has a positive lead and a negative lead for connecting electrically with the circuit. Wires connect the thermistors such that half of the thermistors are placed in parallel with the other half of the thermistors. The total number of thermistors in the circuit is a perfect square. Shrinkwrap fits over the thermistors and the leads. Tabs disposed on bridging clips bend around the shrinkwrap and the wires on either side of each thermistor such that the tabs do not overlap the leads. All the wires between adjacent thermistors are contained in a single, plenum rated sheathing.Type: ApplicationFiled: June 26, 2001Publication date: December 26, 2002Applicant: Mamac Systems, Inc.Inventor: S. Asim Gul
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Patent number: 6494617Abstract: A status detection apparatus for electrical equipment includes a plurality of distributed multiparameter sensors in a containment vessel or other fluid filled region of the electrical equipment. The sensors are capable of providing data relating to plural parameters of the fluid simultaneously at different positions in the fluid. The data provided by the sensors can be processed to permit localization of incipient faults or can indicate other operating states when combined with known flow data of the fluid through the electrical equipment. A method for detecting status of electrical equipment includes sensing parameters simultaneously at multiple locations in the fluid and determining operating status based on the sensed parameters.Type: GrantFiled: April 30, 1999Date of Patent: December 17, 2002Assignee: General Electric CompanyInventors: Edward B. Stokes, Steven H. Azzaro, Thomas G. O'Keeffe
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Patent number: 6494616Abstract: A sensor array includes a plurality of sensors connected to two or more groups of wires such that individual sensors can be addressed. No two sensors are connected to the same two wires. The groups of wires are connected to multiplexers or the like to address particular wires connecting a unique sensor. Dramatically improved accuracy is obtained by connecting rectifiers in series with the sensors to significantly reduce reverse current through a sensor that can lead to significant errors.Type: GrantFiled: August 4, 2000Date of Patent: December 17, 2002Assignee: Regents of the University of MinnesotaInventors: Eugene Tokhtuev, Robert M. Carlson, Christopher J. Owen, Anatoly Skirda, Viktor Slobodyan, Alexander Tokhtuev
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Publication number: 20020150142Abstract: A method for characterizing the parameters of a normally occurring turbine exhaust gas temperature profile is provided. From that characterization the characteristics of a filter function to eliminate or significantly reduce the strength of aliased signals from that normally occurring pattern are established. Sensors to provide filtering functions for that purpose include a distributed gradient thermocouple system and a resistance thermometer system. Examples of such sensor systems are disclosed. The method and related sensors improve the detection limits associated with exhaust gas temperature profiles used to monitor, diagnose, and control gas turbines.Type: ApplicationFiled: September 10, 2001Publication date: October 17, 2002Inventor: Simon Ralph Sanderson
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Publication number: 20020150143Abstract: An electronic clinical thermometer has a probe including a temperature sensor and a heat flux sensor which are controlled to make measurements at specified time intervals. The measured values are used in solving the equation of heat conduction to estimate the temperature of an internal body position. A heater may be included to preheat a body part in order to reduce the time required for measurement. The probe may use two temperature sensors to measure temperatures at two body surface positions through insulating members which are different in thermal conductivity.Type: ApplicationFiled: April 9, 2002Publication date: October 17, 2002Applicant: OMRON CorporationInventors: Muneo Tokita, Satoshi Nakajima, Shigeru Makita
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Publication number: 20020122459Abstract: A high temperature capable probe housing for use in a gas turbine engine is disclosed. The rake is preferably made of silicon nitride or silicon carbide and is capable of withstanding the hostile environment within a gas turbine engine at temperatures greater than 1,200 Celsius while only passively cooled. The rake is a substantially elongated member extending between an at least partially open first end and a closed second end. The rake has an interior surface and an exterior surface. The interior surface defines an internal cavity beginning at the at least partially open first end and extending toward the closed second end. The exterior surface extends between the two ends and has a leading face having a plurality of openings upon which the flow generally impinges. The openings extend between the exterior surface and interior surface and are configured to receive a sensor.Type: ApplicationFiled: December 27, 2000Publication date: September 5, 2002Inventors: Dawn Key McFarland, Timothy John Turk, Andrew John Brewington, Lance Edward Groseclose, Pramod Khandelwal
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Patent number: 6431750Abstract: A lightweight elongate flexible temperature probe includes several temperature sensors embedded inside multiple layers of a thin film polyimide or polyester in which two of the layers are thin film copper etched to form conductors to the sensors. The conductors are in abutting electrical contact with the sensors.Type: GrantFiled: December 14, 1999Date of Patent: August 13, 2002Assignee: Sierra Lobo, Inc.Inventors: Mark S. Haberbusch, Marian Felder, Alan J. Chmiel
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Patent number: 6425687Abstract: A system for measuring average temperature including a plurality of measurement thermocouples (10,12,14) connected in parallel to measurement apparatus (24) by two signal wires (22) of a material different to that of the measurement thermocouples (10,12,14). Compensation thermocouples (26,28,30) are located at the cold junctions (16,18,20) of the measurement thermocouples (10,12,14) and connected to the measurement apparatus (24).Type: GrantFiled: December 16, 1999Date of Patent: July 30, 2002Assignee: Solartron Group LimitedInventor: Wojciech K. Kulczyk
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Publication number: 20020075938Abstract: The apparatus which is located separately from the RTD includes means for measuring the resistance of a plurality of RTDs present at a selected site, the RTDs being those of a number of different RTD types. The module includes means for storing the resistance/temperature map for each of the plurality of RTDs and for determining the temperatures associated with said resistances from the resistance/temperature maps. The resulting plurality of temperatures for each RTD, respectively, is then transmitted in a known order to a remote protective relay which determines the correct temperature for each RTD connected to the module.Type: ApplicationFiled: December 21, 1999Publication date: June 20, 2002Inventors: CARL VINCENT MATTOON, DAVID JAMES DOLEZILEK
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Publication number: 20020071474Abstract: The present invention may be embodied in a device for detection of vulnerable plaque in a vessel. Vulnerable plaque is detected in the vessel based on a temperature increase of the vessel's wall.Type: ApplicationFiled: August 24, 2001Publication date: June 13, 2002Inventor: Randell L. Werneth
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Patent number: 6402372Abstract: A monitor, and method, for monitoring temperatures at various specific times and locations in a test or manufacturing process, and for comparing those temperatures with reference profiles of optimum temperatures. Both the monitor and the method are especially well suited for checking the temperatures of various zones of reflow ovens used in mass soldering the connections of electronic components on circuit boards. The monitor is designed to distinguish clearly among respective temperatures at several points on tops and bottoms of circuit boards.Type: GrantFiled: August 30, 1999Date of Patent: June 11, 2002Assignee: Electronic Controls Design, Inc.Inventor: Roger I. Saunders
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Publication number: 20020067754Abstract: The present invention may be embodied in a device for detection of vulnerable plaque in a vessel based on a temperature increase of the vessel's wall. The device may be a guide wire having an extendable assembly having resilient delivery wires for placing the temperature sensor in contact with the vessel's inner wall.Type: ApplicationFiled: October 1, 2001Publication date: June 6, 2002Inventor: Randell L. Werneth
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Patent number: 6375351Abstract: An oven analyzer for profiling a conveyor oven is disclosed that accurately and precisely determines the physical characteristics of an oven and stores such information so that it can be outputted to a computer for analysis. In one embodiment, the oven analyzer includes a pallet that moves through the conveyor oven. The pallet houses an electronic data logger that is coupled to multiple sensors. The electronic data logger has memory for storing information obtained from the sensors. A first sensor is a temperature sensor that detects the ambient temperature within the oven. A second sensor is mounted within a metal mass of known thermal characteristics and detects the ovens ability to heat an object. A third sensor detects the position of the pallet within the oven. The electronic data logger stores the data received from the sensors in the memory for selective output to a computer for analysis or printing.Type: GrantFiled: March 2, 2001Date of Patent: April 23, 2002Assignee: Electronic Controls Design, Inc.Inventors: Rex L. Breunsbach, Paul M. Austen
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Publication number: 20020044590Abstract: A method of generating a temperature measurement for a batch or a continuous stream of material. The method includes providing a particle having a signal that changes at a pre-determined temperature; inserting the particle into the batch or continuous stream; and detecting a signal change from the particle to thereby generate a temperature measurement for the batch or continuous stream. A suitable system for use in carrying out the method is also described.Type: ApplicationFiled: March 12, 2001Publication date: April 18, 2002Inventors: Josip Simunovic, Kenneth R. Swartzel, Eric Adles
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Patent number: 6325536Abstract: Systems and methods are described for integrated (embedded) semiconductor wafer temperature measurement equipment and processes. An integrated wafer temperature measurement apparatus, comprising: a substrate; a placement resource formed in said substrate; a sensor lead located in said placement resource, said sensor lead having a first end and a second end; a sensor coupled to said first end of said sensor lead and located in said placement resource; and a sensor lead cover coupled to said substrate. The systems and methods provide advantages in that reliability is enhanced, installation and removal are facilitated, and accuracy is improved by obviating any shadowing of the substrate and reducing temperature gradients near the sensor.Type: GrantFiled: July 10, 1998Date of Patent: December 4, 2001Assignee: SensArray CorporationInventors: Wayne Glenn Renken, Mei H. Sun, Paul Miller, Roy Gordon, Peter Michael Noel Vandenabeele
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Patent number: 6299275Abstract: An embodiment of a thermal drop detector in accordance with the present invention includes an array configured to define a plurality of cells each of which is configured to detect thermal changes in an area of that cell resulting from deposition of a drop adjacent that cell. This embodiment of a thermal drop detector additionally includes a thermally conductive layer over each of the cells to protect each of the cells from physical contact with the drop. A method of thermal drop detection in accordance with the present invention includes depositing a drop on a thermally conductive material, the thermally conductive material overlaying a thermally sensitive array. The method additionally includes measuring via the thermally sensitive array a thermal change resulting from deposition of the drop on the thermally conductive material.Type: GrantFiled: July 14, 1999Date of Patent: October 9, 2001Assignee: Hewlett-Packard CompanyInventor: Steven B. Elgee
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Patent number: 6293699Abstract: There is disclosed a method for continuously monitoring temperature at multiple locations within a controlled temperature unit (CTU) using RTDs that can be removed and reinserted. The key to the method is the collection of data using an RTD fixed in a phenolic thermowell, which in turn is inserted through a polytetrafluoroethylene-coated sleeve in the wall of the CTU. The temperature information is transmitted from a data module to an interfaced computer system where it may be presented to the operator in a graphical, tabular or text format or stored in memory. The temperature probes are easily removable so as to facilitate calibration without disruption of the contents of the CTU and can be consistently replaced in the same location within the CTU.Type: GrantFiled: October 26, 1999Date of Patent: September 25, 2001Assignee: Merck & Co., Inc.Inventors: Fred J. Bailey, Mark Pinder, Carl W. Holz
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Patent number: 6260997Abstract: A sample and a scanning probe microscope system are used as the detector for an infrared spectrometer to circumvent the diffraction limit of conventional infrared microscopy, and to provide spectroscopic images with a greatly improved spatial resolution, potentially as low as a few tens of nanometers. The beam from an infrared spectrometer is directed at the sample. The sample is heated to the extent that it absorbs infrared radiation. Thus the resulting temperature rise of an individual region depends upon the particular molecular species present, as well as the range of wavelengths of the infrared beam. These individual temperature differences are detected by a miniature thermal probe. The thermal probe is mounted in a scanning thermal microscope. The scanning thermal microscope is then operated used to produce multiple surface and sub-surface images of the sample, such that the image contrast corresponds to variations in either thermal diffusivity, surface topography or chemical composition.Type: GrantFiled: October 23, 1998Date of Patent: July 17, 2001Inventors: Michael Claybourn, Azzedine Hammiche, Hubert Murray Montagu-Pollock, Michael Reading
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Patent number: 6257761Abstract: This invention makes use of a electronically controlled heating device to form a region of constant high temperature on one side of the insulating material, and causes most of the heat transfer to concentrate in a longitudinal heat flux, which flows across the direction of the thickness of object-to-be-tested, to achieve the effect of one-dimensional heat transfer. When the temperatures on both sides of the insulation material being tested come to a stable state, the temperatures, the thickness of the material, and the heat flux, are measured and used to calculate the heat conductivity. The difference between the ideal two-dimensional heat transfer and the one-dimensional heat transfer can be corrected by the results of a theoretical model. The apparatus has been used to test a material with known heat conductivity. The result of the test conforms well with the expected value.Type: GrantFiled: December 30, 1997Date of Patent: July 10, 2001Assignee: National Science CouncilInventors: Yew Khoy Chuah, Ming-Tsun Sun, Bin-Juine Huang
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Patent number: 6142663Abstract: This invention is intended to provide a semiconductor wafer temperature measuring method for use in reflector plate-equipped infrared annealing furnaces, infrared heating epitaxy furnaces, and other semiconductor wafer processing equipment that employs lamps as the heat source, the method affording easy and accurate measurement of substrate surface temperature, thereby enabling control of the heat source on the basis of these measurements. Characterizing features are the provision of a slit or small hole to the reflector plate and measuring light from the semiconductor wafer surface in the perpendicular direction by means of a scanning CCD sensor to allow substrate temperature to be measured on the basis of the radiant light distribution peak; and the provision of slits in a plurality of locations on the reflecting plate without impairing the function thereof, so that substrate temperature distribution can be measured accurately.Type: GrantFiled: January 21, 1999Date of Patent: November 7, 2000Assignee: Sumitomo Metal Industries, Inc.Inventor: Eiryo Takasuka
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Patent number: 6062728Abstract: An oven analyzer for profiling a conveyor oven is disclosed that accurately and precisely determines the physical characteristics of an oven and stores such information so that it can be outputted to a computer for analysis. In one embodiment, the oven analyzer includes a pallet that moves through the conveyor oven. The pallet houses an electronic data logger that is coupled to multiple sensors. The electronic data logger has memory for storing information obtained from the sensors. A first sensor is a temperature sensor that detects the ambient temperature within the oven. A second sensor is mounted within a metal mass of known thermal characteristics and detects the ovens ability to heat an object. A third sensor detects the position of the pallet within the oven. The electronic data logger stores the data received from the sensors in the memory for selective output to a computer for analysis or printing.Type: GrantFiled: February 27, 1998Date of Patent: May 16, 2000Assignee: Electronic Controls Design, Inc.Inventors: Rex L. Breunsbach, Paul M. Austen