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4454results about "Material thermal analysis" patented technology
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Robust system for screening mail for biological agents
InactiveUS6887710B2Lower the thresholdReduce riskAnalysing fluids using sonic/ultrasonic/infrasonic wavesLiquid dispersion analysisParticulatesEngineering
Items of mail are rapidly processed in a mail sampling system to determine if the mail is contaminated with a chemical or biological agent. The mail sampling system maintains a negative pressure in a containment chamber and includes a triggering sampler that makes a threshold determination regarding possible contamination, and a detecting sampler that obtains a sample for more detailed analysis in response to a signal from the triggering sampler. A sample of particulates collected from an item of mail is either removed for analysis or analyzed in the system to identify a contaminating agent. Optionally, the system includes an archiving sampler, which archives samples for subsequent processing and analysis, and a decontamination system, which is activated to decontaminate the mail if needed.
Owner:FLIR DETECTION
Analyzer having temperature sensor
The present invention relates to an analytical device (X1) including a mounting portion (10) for mounting an analytical tool (2) capable of outputting information for computation, a computation unit for conducting computation for analyzing a sample based on the information for computation, and a temperature detection unit (12) for outputting the temperature information. The temperature detection unit (12) is disposed in the mounting portion (10). The analytical device (X1) preferably further includes a temperature correction unit for correcting the computation results obtained in the computation unit, based on the temperature information. The temperature detection unit (12) includes, for example, a contact type temperature sensor (12A). In this case, the contact type temperature detection unit (12) may include a thermally conductive portion (12B) having a contact surface (12b) to be brought into contact with the temperature sensor (12A) and the analytical tool (2).
Owner:ARKRAY INC
Advanced analyte sensor calibration and error detection
Systems and methods for processing sensor data and self-calibration are provided. In some embodiments, systems and methods are provided which are capable of calibrating a continuous analyte sensor based on an initial sensitivity, and then continuously performing self-calibration without using, or with reduced use of, reference measurements. In certain embodiments, a sensitivity of the analyte sensor is determined by applying an estimative algorithm that is a function of certain parameters. Also described herein are systems and methods for determining a property of an analyte sensor using a stimulus signal. The sensor property can be used to compensate sensor data for sensitivity drift, or determine another property associated with the sensor, such as temperature, sensor membrane damage, moisture ingress in sensor electronics, and scaling factors.
Owner:DEXCOM
Thermocouple vacuum gauge
InactiveUS8047711B2Reduce heatLow thermal conductivityThermometer detailsVacuum gauge using heat conductivity variationHeating timeEngineering
A thermocouple vacuum sensor is provided, the thermocouple being surrounded by a gas or mixture of gases the pressure of which is to be measured. Cyclically the thermocouple is heated until its temperature reaches an upper temperature threshold. The thermocouple is subsequently cooled until its temperature reaches a lower temperature threshold. The heating time required to heat the thermocouple from the lower to the upper temperature threshold is measured. The cooling time required to cool the thermocouple from the upper temperature threshold to the lower temperature threshold may also be measured. The pressure surrounding the thermocouple may then be determined as a function of either the heating time, or the cooling time, or both.
Owner:HEINZ PLOECHINGER
Solid state fluorine sensor system and method
InactiveUS6321587B1Analysing fluids using sonic/ultrasonic/infrasonic wavesMaterial analysis by observing effect on chemical indicatorElectricityElectrical battery
A gaseous fluorine detection system is provided which includes a generally enclosed sample cell containing a substrate comprising a material which interacts with fluorine gas to generate radiant energy. A gas sample of fluorine, the concentration levels of which are to be evaluated is flowed through the cell. A photomultiplier tube is positioned to receive the resulting radiant energy and generate an electrical output signal related to the level of said radiant energy. Means are provided for measuring the said photomultiplier output signal and relating same to the fluorine concentration of the gas sample provided to the cell.
Owner:RADIAN INT
Method and apparatus for sample analysis
InactiveUS6865926B2Easy to operateAnalysing fluids using sonic/ultrasonic/infrasonic wavesComponent separationParticulatesGas analysis
Methods and systems for analyzing samples, such as gas samples, are described. One method comprises providing a gas sample, increasing pressure applied to the gas sample to compress the sample to a smaller volume and provide a pneumatically focused gas sample, and analyzing the pneumatically focused gas sample using any of a variety of analytical techniques. Also disclosed are systems for gas analysis, including systems for analysis of pneumatically focused, and thereby concentrated, gas samples and for analysis of particulate matter in gas samples. Analytical systems constructed within personal computer cases also are disclosed.
Owner:PORTLAND STATE UNIV
Apparatus, systems and methods for detecting and transmitting sensory data over a computer network
InactiveUS7089780B2Increase profitImprove performanceAnalysing fluids using sonic/ultrasonic/infrasonic wavesMaterial analysis by electric/magnetic meansElectrical resistance and conductanceThe Internet
A vapor sensing device that is sufficiently small and lightweight to be handheld, and also modular so as to allow the device to be conveniently adapted for use in sensing the presence and concentration of a wide variety of specified vapors. The device provides these benefits using a sensor module that incorporates a sample chamber and a plurality of sensors located on a chip releasably carried within or adjacent to the sample chamber. Optionally, the sensor module can be configured to be releasably plugged into a receptacle formed in the device. Vapors are directed to pass through the sample chamber, whereupon the sensors provide a distinct combination of electrical signals in response to each. The sensors of the sensor module can take the form of chemically sensitive resistors having resistances that vary according to the identity and concentration of an adjacent vapor. These chemically sensitive resistors can each be connected in series with a reference resistor, between a reference voltage and ground, such that an analog signal is established for each chemically sensitive resistor. The resulting analog signals are supplied to an analog-to-digital converter, to produce corresponding digital signals. These digital signals are appropriately analyzed for vapor identification. The device can then subsequently transmit the digital signals over a computer network, such as the Internet, for analysis at a remote location.
Owner:SMITHS DETECTION
System And Method For Removing Contaminants
ActiveUS20080078289A1Long period of timeHEPA filterAnalysing fluids using sonic/ultrasonic/infrasonic wavesCombination devicesProduct gasProcess engineering
The invention provides a system and method comprising an apparatus for removing contaminants from a gas in a semiconductor processing device, which can include a filter unit having at least two parallel filter stages located therein. The filter stages are designed to remove a least a portion of the contaminants present in the gas flowing through them. The apparatus can also include a flow controller for distributing the gas flow among the filter stages. In one embodiment, the controller may consist of a diffuser plate. The invention also provides a sampling tube orifice for gas flow control in a system or method of the invention. In another embodiment, an apparatus for removing contaminants from a gas in a clean room comprises a filter unit having at least two parallel filter stages, which are used to remove a portion of the contaminants in the gas as it passes through the apparatus.
Owner:ENTEGRIS INC
Respiratory humidification system
ActiveUS7043979B2Analysing fluids using sonic/ultrasonic/infrasonic wavesVolume/mass flow by thermal effectsEngineering
Owner:FISHER & PAYKEL HEALTHCARE LTD
Method and Apparatus for Measuring Fluid Properties
InactiveUS20060010973A1Simple methodEnsure correct executionSurveyConstructionsThermal energyEngineering
A method of measuring fluid properties such as flow velocity, flow rate, and fluid composition comprises positioning a heat exchange element with a temperature sensor, such as an optical fiber temperature sensor, arranged centrally inside the element in thermal contact with a fluid of interest, heating or cooling the heat exchange element to cause a temperature difference and exchange of thermal energy between the element and the fluid, using the temperature sensor to measure the temperature of the heat exchange element during the exchange of thermal energy, and determining properties of the fluid from the temperature measurement. A second temperature sensor can be provided offset from the first sensor to provide additional measurements to improve accuracy, and a plurality of heat exchange elements with temperature sensors can be used together to determine fluid properties over a large region.
Owner:SCHLUMBERGER TECH CORP
Temperature information detecting device for angle sensor and position detecting device
InactiveUS6896407B2Improve accuracyThermometer detailsOperating means/releasing devices for valvesLocation detectionAutomatic control
Owner:YAMATAKE HONEYWELL CO LTD
Apparatus for sensing volatile organic chemicals in fluids
InactiveUS6902701B1High sensitivityHigh selectivityAnalysing fluids using sonic/ultrasonic/infrasonic wavesComponent separationOperation modeChemiresistor
A chemical-sensing apparatus is formed from the combination of a chemical preconcentrator which sorbs and concentrates particular volatile organic chemicals (VOCs) and one or more chemiresistors that sense the VOCs after the preconcentrator has been triggered to release them in concentrated form. Use of the preconcentrator and chemiresistor(s) in combination allows the VOCs to be detected at lower concentration than would be possible using the chemiresistor(s) alone and further allows measurements to be made in a variety of fluids, including liquids (e.g. groundwater). Additionally, the apparatus provides a new mode of operation for sensing VOCs based on the measurement of decay time constants, and a method for background correction to improve measurement precision.
Owner:NAT TECH & ENG SOLUTIONS OF SANDIA LLC
Method and apparatus for measuring the properties of petroleum fuels by distillation
InactiveUS20070050154A1Improve accuracyImprove reliabilityChemical property predictionMaterial thermal analysisBoiling pointDistillation
It is a purpose of this invention to accurately measure the properties of petroleum and petroleum fractions from a small volume of sample oil in a short period of time with less cost and energy for the analysis by vaporizing and distilling the respective components contained in the sample to be measured by a distillation apparatus. The components in the sample oil are first separated and vaporized by the distillation apparatus and the boiling point distribution of the respective components is measured. The property estimation means is equipped with a property estimation model for evaluating the property estimate value outputted from the property estimation model. The method is incorporated into standard or otherwise any distillation test apparatus to provide accurate measure of the thermodynamic and transport properties of undefined multicomponent mixtures such as crude oil, petroleum fractions, gas condensates and the like.
Owner:KWAIT UNIV
Method for monitoring temperature of patient
A method for remotely measuring body temperature of persons and for watching the persons, includes attaching one or more temperature measuring devices to one or more persons or patients, to detect body temperatures or locations or identifications of the persons or patients. The information detected by the temperature measuring devices may be sent to a monitoring device via a blue tooth receiver device, to receive and monitor and watch the changing of the body temperature or locations or identifications of the persons or patients wirelessly or remotely, without going to see and to contact with the persons or patients.
Owner:GLOBAL SUN TECH
Sensor arrangement
ActiveUS20050022581A1Analysing fluids using sonic/ultrasonic/infrasonic wavesTelemetry/telecontrol selection arrangementsChemical stimuliSensor array
A chemical sensing system has: an interrogation unit operable to wirelessly transmit an interrogation signal and wirelessly receive a response; an environmentally sealed container for holding a chemical analyte; a sensor array unit in fluid communication with the analyte disposed within the container, where the sensor array unit is operable to generate a response in the presence of a chemical stimulus; and a passive responder unit connected with the sensor array unit, the responder unit being powered from the interrogation signal, where the responder unit is operable to wirelessly receive the interrogation signal and wirelessly transmit the response to the interrogation signal to the interrogation unit.
Owner:SMITHS DETECTION
Headspace sampling apparatus and method
InactiveUS6395560B1Easy to sampleVolume maximizationAnalysing fluids using sonic/ultrasonic/infrasonic wavesComponent separationGas phaseEngineering
Owner:MARKELOV MICHAEL
Networks with sensors for air safety and security
InactiveUS20050190058A1Easy to cleanImprove collection efficiencyAnalysing fluids using sonic/ultrasonic/infrasonic wavesFrequency-division multiplex detailsAviationAir safety
Airborne particles are impacted on a collection surface, analyzed, and then the collection surface is regenerated. Thus, the same collection surface can be used in numerous cycles. The analysis can be focused on one or more properties of interest, such as the concentration of airborne biologicals. Sensors based on regenerative collection surfaces may be incorporated in many networks for applications such as building automation.
Owner:FLIR DETECTION
Intelligent electro-optical nucleic acid-based sensor array and method for detecting volatile compounds in ambient air
InactiveUS7062385B2Fast response timeFaster sampling timeAnalysing fluids using sonic/ultrasonic/infrasonic wavesBiocideSensor arrayAnalyte
The present invention generally relates to nucleic acid-based sensors and methods for detecting volatile analytes. More particularly, this invention relates to nucleic acid-based optical sensors, sensor arrays, sensing systems and sensing methods for intelligent sensing and detection of unknown materials by way of real-time feedback and control of sampling conditions.
Owner:TUFTS UNIV
Methods for characterizing subsurface volatile contaminants using in-situ sensors
ActiveUS7003405B1Analysing fluids using sonic/ultrasonic/infrasonic wavesElectric/magnetic detection for well-loggingConcentration ResponseTriangulation
An inverse analysis method for characterizing diffusion of vapor from an underground source of volatile contaminant using data taken by an in-situ sensor. The method uses one-dimensional solutions to the diffusion equation in Cartesian, cylindrical, or spherical coordinates for isotropic and homogenous media. If the effective vapor diffusion coefficient is known, then the distance from the source to the in-situ sensor can be estimated by comparing the shape of the predicted time-dependent vapor concentration response curve to the measured response curve. Alternatively, if the source distance is known, then the effective vapor diffusion coefficient can be estimated using the same inverse analysis method. A triangulation technique can be used with multiple sensors to locate the source in two or three dimensions. The in-situ sensor can contain one or more chemiresistor elements housed in a waterproof enclosure with a gas permeable membrane.
Owner:SANDIA NAT LAB
Sensor arrangement
ActiveUS7040139B2Analysing fluids using sonic/ultrasonic/infrasonic wavesTelemetry/telecontrol selection arrangementsChemical stimuliSensor array
A chemical sensing system has: an interrogation unit operable to wirelessly transmit an interrogation signal and wirelessly receive a response; an environmentally sealed container for holding a chemical analyte; a sensor array unit in fluid communication with the analyte disposed within the container, where the sensor array unit is operable to generate a response in the presence of a chemical stimulus; and a passive responder unit connected with the sensor array unit, the responder unit being powered from the interrogation signal, where the responder unit is operable to wirelessly receive the interrogation signal and wirelessly transmit the response to the interrogation signal to the interrogation unit.
Owner:SMITHS DETECTION
Apparatus, systems and methods for detecting and transmitting sensory data over a computer network
InactiveUS6837095B2Increase profitImprove performanceAnalysing fluids using sonic/ultrasonic/infrasonic wavesMaterial analysis by electric/magnetic meansElectrical resistance and conductanceThe Internet
A vapor sensing device that is sufficiently small and lightweight to be handheld, and also modular so as to allow the device to be conveniently adapted for use in sensing the presence and concentration of a wide variety of specified vapors. The device provides these benefits using a sensor module that incorporates a sample chamber and a plurality of sensors located on a chip releasably carried within or adjacent to the sample chamber. Optionally, the sensor module can be configured to be releasably plugged into a receptacle formed in the device. Vapors are directed to pass through the sample chamber, whereupon the sensors provide a distinct combination of electrical signals in response to each. The sensors of the sensor module can take the form of chemically sensitive resistors having resistances that vary according to the identity and concentration of an adjacent vapor. These chemically sensitive resistors can each be connected in series with a reference resistor, between a reference voltage and ground, such that an analog signal is established for each chemically sensitive resistor. The resulting analog signals are supplied to an analog-to-digital converter, to produce corresponding digital signals. These digital signals are appropriately analyzed for vapor identification. The device can then subsequently transmit the digital signals over a computer network, such as the Internet, for analysis at a remote location.
Owner:SMITHS DETECTION PASADENA INC
Methods for sem inspection of fluid containing samples
InactiveUS20050173632A1High resolutionIncrease contrastMaterial analysis using wave/particle radiationBeam/ray focussing/reflecting arrangementsElectron microscopeScanning electron microscope
A method of visualizing a sample in a wet environment including introducing a sample into a specimen enclosure in a wet environment and scanning the sample in the specimen enclosure in a scanning electron microscope, thereby visualizing the sample.
Owner:QUANTOMIX
Environmental test chamber and a carrier for use therein
InactiveUS7070323B2Easy to adaptReduce the total massWeather/light/corrosion resistanceElectronic circuit testingBrickEngineering
One aspect of the present invention is a system of fabricating a barrier wall between the testing and tester volumes of an environmental test chamber. This aspect may use a plurality of pallets adapted to receive a device under test and a testing apparatus, a framework adapted to receive a plurality of pallets, and a plurality of insulation bricks associated with the plurality of pallets. The insulation bricks may be adapted such that they can cooperate to form an insulating barrier between the device under test and the testing apparatus.
Owner:BENCHMARK ELECTRONICS SUZHOU
Self-calibration circuit and method for junction temperature estimation
InactiveUS20110150028A1Accurate and fast junction temperature measurementAccurate and fast junction temperatureThermometer detailsElectrical apparatusJunction temperatureEngineering
The present invention relates to a calibration circuit, computer program product, and method of calibrating a junction temperature measurement of a semiconductor element, wherein respective forward voltages at junctions of the semiconductor element and a reference temperature sensor are measured, and an absolute ambient temperature is determined by using the reference temperature sensor, and the junction temperature of the semiconductor element is predicted based on the absolute ambient temperature and the measured forward voltages.
Owner:NXP BV
Photonic bandgap fibers
InactiveUS20060193583A1Reduce transmission lossWide transmission bandAnalysing fluids using sonic/ultrasonic/infrasonic wavesMaterial analysis by electric/magnetic meansPhotonic bandgapRefractive index
Included among the many structures described herein are photonic bandgap fibers designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber designs, smaller dimensions of high index material in the cladding and large core size provide small flat dispersion over a wide spectral range. In other examples, the thickness of the high index ring-shaped region closest to the core has sufficiently large dimensions to provide negative dispersion or zero dispersion at a desired wavelength. Additionally, low index cladding features distributed along concentric rings or circles may be used for achieving wide bandgaps.
Owner:IMRA AMERICA
Gas chromatograph and expired air component analyzer
InactiveUS20050160790A1Reliable analysisStable outputAnalysing fluids using sonic/ultrasonic/infrasonic wavesComponent separationBuffer tankGas composition
A gas chromatograph having the capability of performing a reliable measurement under a condition that the baseline of a detector output is stabilized, and a breath component analyzer using the same are provided. This gas chromatograph comprises a gas separation column accommodating a member for causing a flow delay depending on gas component; air pump for supplying an air as a carrier gas into the gas separation column; gas supply port formed in a gas flow channel extending between the air pump and the gas separation column, and adapted to supply a subject gas containing a target gas component to be detected into the carrier gas flowing in the gas flow channel; buffer tank provided upstream of the gas supply port; and a detector for detecting the gas component of the subject gas supplied into the gas separation column.
Owner:FIDELITY NATIONAL INFORMATION SERVICES
System and method for inferring an electronic rendering of an environment
InactiveUS7064660B2Analysing fluids using sonic/ultrasonic/infrasonic wavesMaterial analysis by electric/magnetic meansComputer vision
A system and method for inferring an electronic rendering (170) of an environment (110) comprises a plurality of devices (341 and 345), and a processing device. Each wireless device is capable of determining a distance between a neighboring wireless device. Moreover, each device is capable of performing at least one of the following: determining an environmental attribute of the environment, and determining a location of an object in the environment. The processing device gathers information determined from the plurality of devices and infers the electronic rendering of the environment based on the information gathered.
Owner:ARRIS ENTERPRISES LLC
Volatile organic compound sensor system
ActiveUS20040005715A1Potential calibrationEvaluation potentialAnalysing fluids using sonic/ultrasonic/infrasonic wavesWithdrawing sample devicesField monitoringMonitoring methods
Generally, this invention relates to the development of field monitoring methodology for new substances and sensing chemical warfare agents (CWAs) and terrorist substances. It also relates to a portable test kit which may be utilized to measure concentrations of halogenated volatile organic compounds (VOCs) in the field. Specifically it relates to systems for reliably field sensing the potential presence of such items while also distinguishing them from other elements potentially present. It also relates to overall systems and processes for sensing, reacting, and responding to an indicated presence of such substance, including modifications of existing halogenated sensors and arrayed sensing systems and methods.
Owner:UNIV OF WYOMING RES THE
Oxygen depletion sensor
ActiveUS7434447B2Analysing fluids using sonic/ultrasonic/infrasonic wavesChemical analysis using combustionCombustionOxygen
In certain embodiments, an apparatus includes an oxygen depletion sensor (ODS) includes a thermocouple, a first nozzle configured to direct heat from combustion of a first gas, liquid, or combination thereof to the thermocouple, a second nozzle configured to direct heat from combustion of a second gas, liquid, or combination thereof to the thermocouple, and a first igniter.
Owner:PROCOM HEATING
Self-calibrating carbon monoxide detector and method
InactiveUS6948352B2Analysing fluids using sonic/ultrasonic/infrasonic wavesSamplingHydrogenCalibration gas
The self-calibrating carbon monoxide detector and method of the present invention utilize the gas for which the detector was designed to detect as the calibration gas. Specifically, a carbon monoxide gas generator is included in the detector assembly, and is controller to produce a known amount of CO. The sensor response to the quantity of CO generated is monitored, and the calibration thereof adjusted as necessary. The operation of the gas generator is also monitored, and any failures are flagged for user attention. The gas generator specifically suppresses the generation of hydrogen through the materials used in its construction. Temperature effects may also be compensated either through control of gas generation control parameters or compensation of the sensor output in view of the generator temperature effects.
Owner:WALTER KIDDE PORTABLE EQUIP
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