Hygrometer Patents (Class 73/29.02)
  • Patent number: 10612851
    Abstract: The invention concerns a powder drying system (1) comprising a carbon monoxide (CO) gas detection system adapted for detection of CO gas from smoldering powders in a powder drying system component, such as a spray dryer chamber (200), a fluid bed (500) or a bag filter (400), which CO gas detection system comprises at least one inlet CO gas detector (3) arranged on at least one gas inlet of a powder drying system component such as to provide at least one inlet CO gas content measurement, at least one outlet CO gas detector (3) arranged on at least one gas outlet of a powder drying system component such as to provide at least one outlet CO gas content measurement, and an analyzing unit (5) adapted for receiving the at least one inlet CO gas content measurement, receiving the at least one outlet CO gas content measurement and comparing the sum of the at least one inlet CO gas content measurement and the sum of the at least one outlet CO gas content measurement while compensating for dilution, mixing, and time de
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: April 7, 2020
    Assignee: GEA Process Engineering A/S
    Inventors: Poul Erik Krogsgaard Jensen, Gerhardt Jacobsen, Anders Sehested
  • Patent number: 10480443
    Abstract: Embodiments for diagnosing a humidity sensor are provided. One example method comprises adjusting an engine operating parameter based on humidity of a first gas flow measured by a humidity sensor, and indicating degradation of the humidity sensor if a humidity of a second gas flow measured by the humidity sensor is different than an expected humidity. In this way, degradation of the humidity sensor may be indicated if the humidity of the second gas flow measured by the humidity sensor is different than expected.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: November 19, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Imad Hassan Makki, Timothy Joseph Clark, Michael James Uhrich, Pankaj Kumar
  • Patent number: 10442685
    Abstract: Microelectronic packages having hermetic cavities are provided, as are methods for producing such packages. In one embodiment, the microelectronic package includes a sensor die having first and second Microelectromechanical Systems (MEMS) transducer structures formed thereon. First and second cap pieces are coupled to the sensor die by, for example, direct or indirect bonding. A first hermetic cavity encloses the first MEMS transducer structure and is at least partially defined by the first cap piece and the sensor die. Similarly, a second hermetic cavity encloses the second MEMS transducer structure and at least partially defined by the second cap piece and the sensor die. A vent hole is fluidly coupled to the first hermetic cavity and is sealed by the second cap piece.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: October 15, 2019
    Assignee: NXP USA, Inc.
    Inventors: Philip H. Bowles, Stephen R. Hooper
  • Patent number: 10299448
    Abstract: An irrigation control system is described for optimizing water used for growing crops. The irrigation control system uses a moisture sensor to measure soil moisture by measuring directly the relative phase velocities of different modes of propagation along a metallic structure mounted to a dielectric substrate. The average phase velocity is a function of the water content of the soil. The water content measurement is then transmitted to a central controller which then, through a set of heuristic algorithms, regulates the water distributed to the soil in a spatial and temporal manner.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: May 28, 2019
    Inventors: James Canyon, Robert Bruce Ganton
  • Patent number: 10299384
    Abstract: This disclosure discloses a flexible printed circuit, a chip on film, and a bonding method and a display device using this flexible printed circuit and chip on film. The flexible printed circuit/chip on film of this disclosure comprises a humidity detection layer located between a flexible base film and a metal foil, wherein the humidity detection layer and the flexible base film, and/or the humidity detection layer and the metal foil, are optionally bonded by an adhesive layer. The humidity detection layer can change resistance and/or color according to the humidity, so that intuitive and rapid localization of coating defects is performed directly (by color change) or by means of a detecting lead and an impedance/voltage detecting circuit, and finally the object of reducing the ratio of defective products is achieved.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: May 21, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Qiang Zhang, Bin Zhang, Dianzheng Dong, Guangxing Wang, Kan Zhang
  • Patent number: 9921199
    Abstract: Compositions that include bis(glyoxime)-transition metal complexes bound to metal oxide solid supports are provided. In some embodiments the compositions include nickel dimethylglyoxime and the metal oxide supports can be alumina or silica. These compositions can be used to make a colorimetric moisture-indicating sensor that changes visible reflection spectrum quantitatively and reversibly according to the amount of moisture in contact with the sensor. Also provided is a method of detecting moisture using the provided compositions.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: March 20, 2018
    Assignee: 3M Innovative Properties Company
    Inventors: Evan Koon Lun Yuuji Hajime, Myungchan Kang
  • Patent number: 9816873
    Abstract: A system is disclosed for measuring a temperature of air within a container or other enclosure containing temperature controlled items or other product. The system includes a temperature sensor having a thermocouple within a shaft, and a fan for drawing air from within the container through the shaft and past a junction of the thermocouple. The temperature sensor further includes a control unit for correlating a voltage from the thermocouple to a temperature.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: November 14, 2017
    Inventors: James F. Thompson, Frederic R. Weeth
  • Patent number: 9753430
    Abstract: To detect humidity, used are a first series connection circuit connecting a thermistor and a fixed resistor via a node, a second series connection circuit connecting a resistance change type humidity sensor and the thermistor via the node, and a third series connection circuit connecting the humidity sensor and the fixed resistor via the node. A predetermined voltage is applied across the first circuit to detect a first voltage indicating temperature through the node, and secondly across the second circuit to detect a second voltage indicating a first humidity through the node, and finally across the third circuit to detect a third voltage indicating a second humidity through the node. Then, the first voltage is compared with a reference voltage and judgment is made, based on a comparison result, to determine which of the second voltage and the third voltage is relevant to use as a basis for outputting the humidity as detected.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: September 5, 2017
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Jie Zheng, Ryo Ito, Kenji Kanazawa, Osamu Takahashi
  • Patent number: 9689819
    Abstract: The present invention has to do with a method and system for a high precision electronic psychrometer operable at low temperatures and high humidity environments. The electronic psychrometer includes thermistors for measuring wet and dry bulb temperatures and a wicked cage surrounding one of the thermistors. The wicking action of the wicked cage is controlled by an evaporation controller in conjunction with the wick's physical parameters. The electronic psychrometer determines relative humidity and provides a readout display and/or a control signal.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: June 27, 2017
    Assignee: The University of Vermont and State Agricultural College
    Inventor: Christopher W Callahan
  • Patent number: 9618470
    Abstract: Methods and systems are provided for an engine coupled temperature-based humidity sensor. Degradation of the humidity sensor may be determined while flowing gasses into an engine intake air downstream of a humidity sensor and upstream of a compressor, indicating humidity sensor degradation when relative humidity readings change by less than a threshold while temperature at the sensor changes greater than a second threshold.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: April 11, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Michael James Uhrich, Yong-Wha Kim, Ross Dykstra Pursifull
  • Patent number: 9581539
    Abstract: A device for measuring the consumption of oxygen and the consumption of carbon dioxide by a subject comprises an air collecting member for collecting the flow of air breathed, a flowmeter for measuring the flow rate of air exhaled by the subject, and a sampling line for sampling a portion of the flow of air exhaled by the subject. A pump, with substantially constant capacity draws the aforesaid portion of flow of air into the sampling line. A mixing chamber is interposed in the sampling line for collecting and mixing together flows of air exhaled by the subject in a number of breathing cycles. Means for sensing the concentration of oxygen and means for sensing the concentration of carbon dioxide are arranged in the sampling line.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: February 28, 2017
    Assignee: COSMED S.r.l.
    Inventor: Paolo Brugnoli
  • Patent number: 9541433
    Abstract: A sensor device for detecting at least one property of a flowing fluid medium includes: at least one moisture sensor; and at least one application device for applying the flowing fluid medium to the moisture sensor. The application device includes at least one diaphragm and at least one protective device which has at least one guide rib structure.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: January 10, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Ulrich Wagner, Frank Steuber, Uwe Konzelmann, Andreas Kaufmann
  • Patent number: 9482172
    Abstract: Embodiments for diagnosing a humidity sensor are provided. One example method comprises adjusting an engine operating parameter based on humidity of a first gas flow measured by a humidity sensor, and indicating degradation of the humidity sensor if a humidity of a second gas flow measured by the humidity sensor is different than an expected humidity. In this way, degradation of the humidity sensor may be indicated if the humidity of the second gas flow measured by the humidity sensor is different than expected.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: November 1, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Ross Dykstra Pursifull, Imad Hassan Makki, Timothy Joseph Clark, Michael James Uhrich, Pankaj Kumar
  • Patent number: 9281532
    Abstract: A system and method for operating a fuel cell stack of a fuel cell system in a vehicle when an error in cathode air flow rate is detected. The system and method include estimating a cathode air flow rate and detecting an error in the estimated cathode air flow rate. The system and method also include utilizing high frequency resistance measurements from a high frequency resistance sensor to control a relative humidity of the fuel cell stack when the error in the estimated cathode air flow rate has been detected.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 8, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Derek R. Lebzelter, Loren Devries, Todd K. Preston, Joseph Mussro, John P. Nolan
  • Patent number: 9074548
    Abstract: Methods and systems are provided for an engine including a humidity sensor. Degradation of the humidity sensor may be determined based on a change in intake air relative humidity as compared to a change in intake air temperature or pressure, under selected conditions. An amount of exhaust gas recirculated to an engine intake is adjusted differently based on whether the humidity sensor is degraded or functional.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: July 7, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Imad Hassan Makki, Michael James Uhrich, Timothy Joseph Clark, James Michael Kerns, Robert Roy Jentz
  • Publication number: 20150068283
    Abstract: A hygrometer includes a heat transfer section extending from a measurement space toward an outside space separated from the measurement space, a heat release amount control unit that causes heat to be released to the outside space from the heat transfer section such that an amount of heat released to the outside space is made constant, and a computation device that calculates a humidity of the measurement space. The computation device calculates the humidity from a heat transfer section temperature and a measurement space temperature using a relational expression based on a heat balance in the heat transfer section when condensation is occurring in a portion, of the heat transfer section, located within the measurement space in a state where the amount of heat released to the outside space from the heat transfer section is made constant by the heat release amount control unit.
    Type: Application
    Filed: March 6, 2013
    Publication date: March 12, 2015
    Inventor: Satoru Yamauchi
  • Publication number: 20150059471
    Abstract: An apparatus including a first sensor including a sensing material that is sensitive to a first parameter and a second parameter, wherein sensitivity to the first parameter changes sensitivity to the second parameter. The sensitivity of the first sensor to one of the first and the second parameters may be controlled by maintaining, as a constant, the other of the first and the second parameters. The apparatus may include a second sensor sensitive to at least one of the first parameter and the second parameter. The first parameter may be deformation and the second parameter may be a concentration of a gaseous analyte such as, for example, humidity. The second sensor may include the sensing material that is sensitive to the first parameter and the second parameter.
    Type: Application
    Filed: August 28, 2014
    Publication date: March 5, 2015
    Inventors: Samiul HAQUE, Stefano Marco Borini, Richard White
  • Patent number: 8869596
    Abstract: A sensor device determines an amount of liquid contained or stored in an object to be tested. The sensor device contains at least one heating element and at least one humidity sensor. When operated, the sensor device defines at least one volume which can be sealed off by placing the device on the surface of the object to be tested. The heating element is configured to heat at least part of a surface of the object delimiting the volume, the humidity sensor measuring the humidity in the interior of the volume.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: October 28, 2014
    Inventor: Peter Hagl
  • Patent number: 8869595
    Abstract: An adhesive assembly is provided in particular for assembling a novel element on a structure or further for reinforcing a structure. The adhesive assembly includes a substrate, a rigid element placed with an interval relative to the substrate, at least one seal compressed between the substrate and the rigid element and defining a sealed space within said interval, and a hardened adhesive occupying said space. The seal is compressed by the rigid element that is held on the substrate by the hardened adhesive.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: October 28, 2014
    Assignee: Cold Pad
    Inventors: Jean-Philippe Court, René-Louis Geffroy
  • Patent number: 8851745
    Abstract: A hygrometer and dew-point instrument is provided that is structurally simple while reducing the workload during maintenance. The hygrometer measures relative humidity of a measurement space, and has a main body that encapsulates a working fluid therein and causes a heat-pipe phenomenon. The main body is disposed across the measurement space and an external space spaced from the measurement space by a heat-insulating part and has a temperature lower than the measurement space. A first temperature deriving part derives the temperature of the main body in a section where the working fluid evaporates. A space temperature detecting unit detects the temperature of the measurement space. A computation unit calculate relative humidity of the measurement space based on the temperature of the main body derived by the first temperature deriving part and the temperature of the measurement space detected by the space temperature detecting unit.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: October 7, 2014
    Assignee: Espec Corp.
    Inventor: Shinichirou Sakami
  • Publication number: 20140260543
    Abstract: The present invention provides a unique method and apparatus for the automatic detection of water in portable electronic devices, such as cell phones, digital music players, pagers, cameras, tablet computers and the like, after these units have been subjected to water, high-humidity conditions, or other unintended deleterious wetting agents that could render such devices inoperable. Such detection can be performed without any disassembly of the device required. At least one embodiment provides a user-controlled vacuum plenum that simultaneously scavenges air from within the portable electronic device while sampling the relative humidity to determine the level of water or moisture within the device. The relative humidity is sampled by a microcontroller and displayed on a user friendly interface to allow repair and retail shops to quickly determine whether the portable electronic device contains water or moisture within its enclosed interior.
    Type: Application
    Filed: November 14, 2013
    Publication date: September 18, 2014
    Applicant: Revive Electronics, LLC
    Inventors: Reuben Quincey Zielinski, Joel Christopher Trusty
  • Publication number: 20140250979
    Abstract: A system and method for continually and automatically measuring the quality of steam includes a steam dryness/superheat meter and a non-condensable gases (NCG) meter. The steam dryness meter includes a throttling calorimeter through which a steam sample enters at atmospheric pressure, sensors for sensing the pressure and temperature of the stream before and after it enters the calorimeter, a controllable heat input for supplying any additional energy necessary to superheat the steam sample, and logic for deriving the dryness from the collected data. The NCG meter includes a cooler for condensing the steam sample reservoirs into which the liquid and non-condensable gases are entrapped and measured, and logic for continuously deriving the NCG ratio from the collected data.
    Type: Application
    Filed: August 31, 2012
    Publication date: September 11, 2014
    Applicant: ARMSTRONG GLOBAL HOLDINGS, INC.
    Inventor: Albert R.L.M. Van Vyve
  • Patent number: 8813541
    Abstract: Methods and systems for measuring atmospheric water content, are provided. The method includes measuring a first air temperature and a first air pressure at a first location in a compressor, measuring a second air temperature and a second air pressure at a second location in the compressor, computing a ratio of specific heats from the first and second air temperatures and the first and second air pressures, and determining an atmospheric water content from the ratio of specific heats.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: August 26, 2014
    Assignee: The Boeing Company
    Inventors: Charles B. Spinelli, Brian J. Tillotson, Tamaira E. Ross
  • Publication number: 20140223995
    Abstract: In order to allow application programs access to a gas sensor, a versatile mechanism is provided that allows to provide a flexible sensor control through a simple, fixed API. The mechanism is designed to let the application program query the possible operating modes of the gas sensor. The operating modes e.g. specify the methods for controlling the gas sensor and for processing its raw data.
    Type: Application
    Filed: January 22, 2014
    Publication date: August 14, 2014
    Inventors: Johannes BUHLER, Roger SCHMIDLIN
  • Patent number: 8783101
    Abstract: A rapid response relative humidity sensor based on nano-structured aluminum oxide thin film is disclosed. The main body of the sensor is an anodic aluminum oxide thin film of about 2-20 ?m thick formed from an Al substrate which serves as one electrode. A porous metal layer of about 20-200 nm thick is formed over the anodic aluminum oxide thin film and functions as a second electrode. The alumina thin film contains nano-sized channels of about 10-100 nm in diameter, serving as a capacitive relative humidity sensor having high sensitivity and short response time. Thermal annealing at elevated temperature improves the linearity of the capacitance versus humidity curve, giving a full range humidity sensing range. Hysteresis and degradation are negligible for the humidity sensors.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: July 22, 2014
    Assignee: Nano and Advanced Materials Institute Limited
    Inventors: Chun Zhang, Jianying Miao, Ning Wang
  • Publication number: 20140188287
    Abstract: Temperature, relative humidity and air quality define comfort indoors. Individuals judge comfort by how the environment feels and smells. Heating, ventilation and air conditioning (HVAC) equipments are used to control the indoor climate and thereby control comfort. Most homes and offices are normally equipped with just a sensor to show the temperature level. It is rare to find humidity sensors and temperature sensors in every room in homes and offices so controlling the environment locally is not possible. Air quality, another parameter that influences comfort, is measured by the presence of volatile organic compounds or particles that can now be identified using more sophisticated monitors. An invention is described here that will make it easy and affordable to measure and control the temperature, relative humidity and air quality using a smart phone, that is commonplace now, thereby controlling the comfort level.
    Type: Application
    Filed: December 31, 2012
    Publication date: July 3, 2014
    Inventor: Ashok Sabata
  • Publication number: 20140156172
    Abstract: Embodiments for adjusting engine operating parameters based on output from an exhaust humidity sensor are provided. One example method for an engine comprises based on a dew point of exhaust gas, adjusting an exhaust gas sensor heater configured to heat an exhaust gas sensor disposed in an exhaust passage of the engine, the dew point based on output from a humidity sensor disposed in the exhaust passage.
    Type: Application
    Filed: December 5, 2012
    Publication date: June 5, 2014
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Gopichandra Surnilla, Richard E. Soltis, Jacobus Hendrik Visser, Stephen B. Smith, Timothy Clark
  • Publication number: 20140102175
    Abstract: A distributed relative humidity and temperature sensing system with optional gas assay functionality, comprising a sample head internally equipped with: 1) A relative humidity sensor; 2) A temperature sensor; 3) A gas sample port for the attachment of a gas assay device, or, an integral gas assay device; and, 4) A fan. The sample head is attached to a semi-rigid sample tube embedded in a stored mass of agricultural product and the aforementioned fan causes air from within the stored mass to be drawn through the sample head where its relative humidity, temperature, and optionally, chemical composition may be studied. An alternative embodiment allows for the deployment of a complex network of sample tubes so that samples may be drawn as required from a number of points within the stored mass.
    Type: Application
    Filed: October 14, 2012
    Publication date: April 17, 2014
    Inventor: Kent Wasden
  • Publication number: 20140096592
    Abstract: An investment casting shell substrate sensor method and apparatus comprising a hollow probe 10 having an aperture 30, the aperture 30 covered by a water proof breathable membrane (WPBM) 20 that is constructed and arranged to repel liquid from entering the aperture 30, while remaining permeable so as to allow vapor and air to pass through the aperture 30, thereby creating a liquid free internal void 50 within the hollow probe 10 that receives a sensor 40 for measuring the conditions (i.e. temperature and humidity) within the internal void 50, which are accurately indicative of the conditions at the shell substrate at the aperture 30 location. The disclosed sensor assembly provides target specific information at selected substrates within the shell real time, during the shell building process.
    Type: Application
    Filed: October 4, 2013
    Publication date: April 10, 2014
    Inventor: Julie Markee
  • Publication number: 20140079458
    Abstract: A sheet material identification device includes a humidity adjuster, a detector, and a controller. The humidity adjuster adjusts the humidity of a sheet material by causing the sheet material to either release or absorb moisture. The detector detects the humidity of the sheet material before and after the adjustment of the humidity. The controller calculates a first difference in humidity of the sheet material before and after the adjustment of the humidity, and identifies the type of sheet material on the basis of the first difference.
    Type: Application
    Filed: August 23, 2013
    Publication date: March 20, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Masami SETO, Kunihiro Tan, Shinichi Kubota, Yoshihiko Miki
  • Publication number: 20140076027
    Abstract: A humidity sensor and filter assembly are housed within a cylindrical barrel that is positioned in a process gas stream such as combustion flue gas. A portion of sample flue gas is conducted through the barrel and the filter assembly past the sensor located inside the filter so that accurate humidity measurements can be taken. Unwanted flue gas particulate matter accumulated on the outside surface of the filter is ejected by pulsed purge gas admitted into the filter to reverse the flow through the filter. In one embodiment a heat exchange chamber preheats the purge gas. In another embodiment the pulsed purge is supplied by a reciprocal piston contiguous with the internal volume of the filter that reverses the flow through the filter using the process gas.
    Type: Application
    Filed: September 9, 2013
    Publication date: March 20, 2014
    Inventor: Stewart Nicholson
  • Publication number: 20140076026
    Abstract: The present disclosure provides a relative humidity sensor including a sensor electronics assembly that is encased in a body assembly that protects the sensor electronics assembly. A humidity sensor element, though, remains exposed to the ambient environment through an aperture in the body assembly. One or more filter(s) comprising a porous membrane can cover the aperture at different locations within the humidity sensor. The filter can be attached during the construction of the body assembly thereby simplifying the manufacture of the humidity sensor.
    Type: Application
    Filed: September 20, 2012
    Publication date: March 20, 2014
    Applicant: THERM-O-DISC, INCORPORATED
    Inventors: Jared Starling, Philip S. Young, Gary D. Dinges
  • Publication number: 20130340500
    Abstract: A method of monitoring a space to determine at least one change in state related to at least one activity includes analyzing an amount of water vapor in the air over time and relating a change in the amount of water vapor in the air over time to the at least one change in state. In a number of embodiments, the at least one change in state is related to a kitchen activity which causes a change in the amount of water vapor in the air. Changes in dew point over time may, for example, are determined. In a number of embodiments, changes in dew point over time are determined by measuring temperature and relative humidity over time and determining dew point from measured temperature and measured relative humidity. Changes in dew point over time may, for example, used to identify or distinguish the activity from a plurality of possible activities associated with the change in state.
    Type: Application
    Filed: March 14, 2013
    Publication date: December 26, 2013
    Inventors: CRAIG MILLER, MICHAEL STURDEVANT, WILLIAM KAIGLER
  • Publication number: 20130307703
    Abstract: The invention relates to a device for monitoring the integrity and soundness of a mechanical structure, such as an aircraft. The device comprises a control unit, a radio frequency transmission means, and an electric battery. The control unit recovers data from a set of digital and/or analog sensors. The radio frequency transmission means enables the control unit to transmit the data received from the sensors to a man/machine interface. The electric battery powers the device and is rechargeable. The device further comprises a module for recovering electromagnetic energy capable of converting the recovered electromagnetic energy into electric power so as to recharge the battery and/or directly power the device.
    Type: Application
    Filed: January 31, 2012
    Publication date: November 21, 2013
    Applicant: EUROPEAN AERNAUTIC DEFENCE AND SPACE COMPANY EADS FRANCE
    Inventors: Bruno Foucher, Vincent Rouet, Remy Reynet
  • Patent number: 8579503
    Abstract: A moisture flow meter is provided in the air at negative pressures in the drying of transformers by means of a vacuum process for water extraction, causing a differential of pressure through a device of orifice plate and the continuous measurement of the dewpoint. The meter includes a pipeline, a continuous dewpoint meter able to support negative pressure, as well as the use of a orifice plate and two vacuum meters (vacuum meters) capable of measuring the pressure of condensable steam as well as a orifice which, allow a pressure drop. The signals on both sides of the orifice plate and the one from the dewpoint temperature are sent to a data acquisition card, which allows to measure, with the help of an algorithm, the amount of water in weight that flows per time unit.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: November 12, 2013
    Assignee: Prolec Ge Internacional, S. de R.L. de C.V.
    Inventors: David Diguero Hernández, Manuel Antonio Cano Urrego
  • Publication number: 20130252116
    Abstract: A method of estimating water vapor transfer unit degradation without having to remove the unit from a fuel cell system to which it cooperates, and a device performing the same. The method includes using a combination of a backward-looking model and a forward-looking model. The first of these models is used to evaluate changes in water vapor transfer effectiveness in the unit, while the second is for determining the water transfer rate of the unit. Together, the models provide a more accurate way to estimate and control relative humidity for both stack inlet and outlet flowpaths, as well as provide an indication of when service or replacement of the water vapor transfer unit may be warranted.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 26, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yan Zhang, Manish Sinha, Loren Devries
  • Patent number: 8527179
    Abstract: The invention relates to a method and a device for determining specific emissions as an exhaust gas characteristic of an internal combustion engine. Said method is characterized in that the exhaust gas mass flow (3) is determined as the first operating parameter and the engine power output (2) as the second operating parameter, the nitrous oxide mass flow (3) and the engine power output (2) are derived from a respective measured value that deviates from the operating parameter and the exhaust gas characteristic is calculated as a quotient from the corrected exhaust gas mass flow (3) and the engine power output (2).
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: September 3, 2013
    Assignee: Testo AG
    Inventors: JoséLuis Miguez Tabares, Santiago Murillo Zapatero, Knut Hoyer
  • Publication number: 20130219994
    Abstract: A combination sensor and corresponding method of measuring a plurality of environmental parameters uses a pressure sensor disposed on an integrated circuit die; a humidity sensor disposed on the integrated circuit die; and a circuit coupled to and shared by the pressure sensor and the humidity sensor to facilitate pressure and humidity sensing
    Type: Application
    Filed: February 27, 2012
    Publication date: August 29, 2013
    Inventors: Dubravka Bilic, Andrew D. McNeil
  • Publication number: 20130192342
    Abstract: An atmospheric cloud height, humidity profile, or temperature measuring method and arrangement are provided. In the method, pulsed laser signals (14) are transmitted through transmission optics (2, 3, 4, 5, 6) to the atmosphere and the signal (15) reflected or scattered back from there is detected. An interference filter (3) is used in the optics, in order to stabilize the transmitted optical power to the centre wavelength of the interference filter (3).
    Type: Application
    Filed: April 28, 2011
    Publication date: August 1, 2013
    Inventor: Jukka Kallio
  • Publication number: 20130180315
    Abstract: Certain embodiments described herein are directed to devices that can be used in purging and loading applications. In some examples, a device configured to purge a sorbent tube until a desired water level is reached is provided. In other examples, a device configured to load a sorbent tube with a desired water level is provided. Systems and methods using the devices are also described.
    Type: Application
    Filed: January 13, 2012
    Publication date: July 18, 2013
    Inventors: Miles Snow, Lee Marotta
  • Publication number: 20130174644
    Abstract: A method for operating a sensor module having a humidity sensor for ascertaining the relative humidity, at least one first measured value for the relative humidity being ascertained with the aid of the humidity sensor. It is provided that an ambient temperature in the area of the humidity sensor is changed with the aid of a temperature control device; at least one second measured value for the relative humidity is ascertained with the aid of the humidity sensor after the change in ambient temperature in the area of the humidity sensor; and an operating state and/or a proper operation of the humidity sensor is inferred as a function of the first and second measured values.
    Type: Application
    Filed: May 19, 2011
    Publication date: July 11, 2013
    Inventors: Norbert Schneider, Alex Grossmann, Uwe Konzelmann, Joerg Brueckner, Wolfgang Dressler, Stefan Motz, Thilo Gleisberg, Christian Wolf
  • Publication number: 20130133404
    Abstract: A system for detecting a mold condition has a base unit configured to receive and display the temperature and the humidity from a remote sensing unit. The base unit is configured to determine if a mold condition is present at a location of the remote sensing unit based on a time interval the remote sensing unit detects the humidity and the temperature above predetermined thresholds, and display an indicator if the mold condition is present. A method of detecting a mold condition includes wirelessly transmitting a detected humidity and temperature from a sensing unit to a base unit, monitoring the temperature and the humidity across a time interval, and providing an indicator if the mold condition is present when the temperature and the humidity are above predetermined thresholds for the time interval.
    Type: Application
    Filed: November 28, 2011
    Publication date: May 30, 2013
    Applicant: TAYLOR PRECISION PRODUCTS, INC.
    Inventors: Diptesh R. Patel, Jeffrey D. Koon, Ronni L. Emrich
  • Publication number: 20130118232
    Abstract: The present invention provides for a method and device for monitoring an ambient humidity sensor in a combustion engine, where the monitoring of the ambient humidity sensor is made by comparing the ambient humidity measured by said humidity sensor and an ambient humidity determined from an oxygen measurement of at least another sensor in the engine system, such as a NOX, or Lambda and/or an oxygen sensor. Said comparison is made using an offset of the oxygen signal reading of said at least another sensor, in a fuel cut condition where the drift or offset of said another sensor is related to the variation of the ambient humidity.
    Type: Application
    Filed: May 5, 2011
    Publication date: May 16, 2013
    Applicant: FPT MOTORENFORSCHLUNG AG
    Inventors: Theophil Auckenthaler, Werner Zaehner
  • Patent number: 8440274
    Abstract: Electronic devices may have sensitive circuitry. To determine whether an electronic device has been exposed to excessive amounts of moisture, the electronic device may be provided with a moisture indicator. The moisture indicator may have a wicking layer of white paper and a red dye layer. If a portion of the moisture indicator is exposed to moisture, red dye may bleed into the white paper. The moisture indicator may be mounted in an input-output port opening or other portion of the electronic device where the state of the moisture indicator is visible. The moisture indicator may have sealed edges to reduce sensitivity to small amounts of moisture intrusion. Different regions of the moisture indicator may be provided with different sensitivities by forming structures that have altered moisture flow properties, by altering wicking layer thicknesses, or by otherwise spatially modifying moisture sensitivity.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: May 14, 2013
    Assignee: Apple Inc.
    Inventor: Erik L. Wang
  • Patent number: 8381575
    Abstract: The present invention relates to a sensor for humidity, etc. which has high precision, very small electrical power consumption and simplified composition, and a management system therefor. The sensor and the management system therefor according to the present invention are also economical. The sensor according to the present invention comprises two electrode pads and an absorption layer for absorbing moisture, etc. between them, and detects a capacitance variation and a resistance variation between the electrode pads, measuring humidity, etc. in real time. In the sensor, one or both of the electrode pads can be made by printing or coating a conductive material on a paper pad or a fabric pad in a mesh shape of fine lines. Or the electrode pads can be fabrics with fine thread of a mesh-type electric conductor coated by an absorptive material having an insulating property.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: February 26, 2013
    Inventor: Se Yeol Seo
  • Publication number: 20130035869
    Abstract: An apparatus and method for monitoring and sampling air quality in an interior space of a wall are provided. The apparatus includes a housing configured to attach the apparatus to an electrical outlet in the wall, and a gasket configured to provide a seal between the housing and the electrical outlet. The apparatus further includes an air moving unit configured to draw air from the interior space of the wall into the apparatus, and a sensor configured to monitor and sample the air quality in the interior space of the wall. The gasket is configured to directly attach to an electrical plate cover of the electrical outlet or to the wall.
    Type: Application
    Filed: August 3, 2011
    Publication date: February 7, 2013
    Inventor: Charles Mitchell MINGES
  • Publication number: 20120234078
    Abstract: A sensor device determines an amount of liquid contained or stored in an object to be tested. The sensor device contains at least one heating element and at least one humidity sensor. When operated, the sensor device defines at least one volume which can be sealed off by placing the device on the surface of the object to be tested. The heating element is configured to heat at least part of a surface of the object delimiting the volume, the humidity sensor measuring the humidity in the interior of the volume.
    Type: Application
    Filed: October 29, 2010
    Publication date: September 20, 2012
    Inventor: Peter Hagl
  • Publication number: 20120192622
    Abstract: System and method for geo-location of a device (such as a tag) using barometric pressure readings taken in the vicinity of the device and correlated to datasets of barometric pressure that have pressure gradients over time and space. The readings taken in the vicinity of the device may be correlated to the datasets using an iterative Bayesian approach to determine a geo-location of the device with a high degree of confidence.
    Type: Application
    Filed: January 28, 2011
    Publication date: August 2, 2012
    Applicant: The Charles Stark Draper Laboratory, Inc.
    Inventors: Benjamin F. Lane, Catherine L. Slesnick
  • Publication number: 20120186664
    Abstract: A water uptake measurement system for measuring uptake of a fluid by a sample includes a sample chamber, a suspension component and a supply interface. A suspension aperture is located at a first end of the sample chamber and extends from an outer surface of the sample chamber to an inner surface of the sample chamber. The suspension component passes through the suspension aperture and is configured to support the sample within the internal cavity such that the sample is spaced apart from the inner surface of the sample chamber. The supply interface is configured to deliver the fluid to the internal cavity of the sample chamber.
    Type: Application
    Filed: January 20, 2011
    Publication date: July 26, 2012
    Applicant: NISSAN NORTH AMERICA, INC.
    Inventors: Gregory DiLeo, Rameshwar Yadav, Kevork Adjemian
  • Patent number: 8225641
    Abstract: A self-cleaning humidity sensor based on Mg2+/Na+-doped TiO2 nanofiber mats is provided. Examples show the response and recovery characteristic curves for ten circles with the RH changing from 11% to 95%. The nanofibers are manufactured by mixing together a metal salt comprising titanium, a magnesium compound, a sodium compound, and a high molecular weight material to form a mixture, electrospinning the mixture to form composite nanofibers, and calcining the composite nanofibers to yield a TiO2 nanofiber material doped with magnesium and sodium.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: July 24, 2012
    Assignee: Headwaters Technology Innovation, LLC
    Inventors: Ce Wang, Hongnan Zhang, Zhenyu Li, Wei Zheng, Wei Wang, Changkun Liu, Bing Zhou