Exhaust, Dust Or Smoke Patents (Class 356/438)
  • Patent number: 10724936
    Abstract: A measurement apparatus includes: a measurement tank including an air inlet and an air outlet; a fan; a light source configured to irradiate micro-particulate matter with light; a photodetector configured to detect scattered light from the micro-particulate matter; a first circuit configured to detect individual particles of the micro-particulate matter based on an output of the photodetector; a second circuit configured to detect a micro-particle group of the micro-particulate matter based on the output of the photodetector; a switch configured to switch into one of a first state in which the output of the photodetector is input to the first circuit and a second state in which the output of the photodetector is input to the second circuit; and a controller configured to control a drive and stop of the fan, a turn-on and a turn-off of the light source, and a switching of a state of the switch.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: July 28, 2020
    Assignee: FUJITSU LIMITED
    Inventor: Ryozo Takasu
  • Patent number: 9897550
    Abstract: A probe for an IR or UV sensor comprising a light emitter and detector is described comprising a lens. The detector detects the spectrums of the emitted light after it has passed a gas to be measured. The sensor of the present invention is especially suitable for such as harsh or aggressive environments measuring the exhaust gasses, for example in ships, vehicles, chimneys etc., and comprises purge gas protections for delicate optical parts to prevent particles etc. from the exhaust gas depositing on the optics. The sensor further has a flow of sample gas from the gas to be measured being adapted to prevent the purge gas from inferring with the measurements where the sample gas are split into at least two flows where one is adapted for preventing the purge gas from influencing the measurement in a measuring region.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: February 20, 2018
    Assignee: Danfoss IXA A/S
    Inventors: Carsten Moberg, Allan Skouboe, Jesper Høyer
  • Patent number: 9638631
    Abstract: A system for species concentration spatial reconstruction for an exhaust system includes an emitter, a detector, and a controller. The emitter is coupled to a first portion of the exhaust system and tuned to a specific wavelength of a species to be measured. The detector is coupled to a second portion of the exhaust system opposite to the first portion such that the detector is positioned to detect a beam attenuation of a beam from the emitter. The controller is configured to receive a plurality of beam attenuation measurements from the detector and to generate a cross-sectional species concentration map based on the plurality of beam attenuation measurements.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: May 2, 2017
    Assignee: CUMMINS EMISSION SOLUTIONS, INC.
    Inventors: Douglas A. Mitchell, Mihai Chiruta
  • Patent number: 9532009
    Abstract: A system for detecting a contaminant in a container is provided. The system includes a laser source configured to emit a laser beam into the container, an imaging array configured to detect the laser beam as imaging data, and a computing device communicatively coupled to the imaging array. The computing device is configured to determine, from the imaging data, a plurality of beam path length differences due to the contaminant, and calculate, from the beam path length differences, a volume of contaminant in the container.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: December 27, 2016
    Assignee: The Boeing Company
    Inventor: Morteza Safai
  • Patent number: 9188523
    Abstract: A system for estimating size distribution and concentration of aerosols in an atmospheric region includes a digital camera, a sunlight attenuation filter, and a processor. The filter is aligned between the sun and the camera's aperture. Image processing is performed on an image captured when the filter and the sky are in focus of the camera. The image includes (i) sunlight passing through the filter, and (ii) sunlight scattered by the atmosphere and not incident on the filter. The image processing compares intensity of a first portion of the image defined by the sunlight so-scattered to Mie and Rayleigh scattering computations generated for aerosols of known size distributions where a closest match is indicative of size distribution of aerosols. The image processing determines total solar irradiance in a second portion of the image defined by the sunlight so-passed through the filter as an indication of total concentration of aerosols.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: November 17, 2015
    Assignee: SCIENCE AND TECHNOLOGY CORPORATION
    Inventor: Mark R Schoeberl
  • Patent number: 9030667
    Abstract: A method to collect 3D measurement data regarding a working fluid in a system, e.g., a turbo-machine, including: arranging sources of beams proximate to a passage of the working fluid in or downstream of the turbo-machine such that beams from the sources are projected through the working fluid; detecting intensities of the beams after they pass through the working fluid, and generating at least a two dimensional (2D) representation of the working fluid based on the detected intensities of the beams.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 12, 2015
    Assignee: General Electric Company
    Inventor: Olgu Tanriverdi
  • Patent number: 9013703
    Abstract: A gas analyzing apparatus includes a probe for measuring a concentration of sample gas flowing in a pipe by an optical measurement system. Influence of a thermal lens effect phenomenon is suppressed so that measurement accuracy is improved. The apparatus includes a probe tube disposed to cross a flow path of the sample gas in the pipe to introduce the sample gas flowing in the pipe to a predetermined hollow measurement region. A light emission portion and a light receiving portion for project measurement light to the measurement region in the probe tube and receive the measurement light after passing through the sample gas in the measurement region. A purge gas feed tube disposed in the probe tube supplies purge gas to a region between the optical system members and the measurement region, with a gap to the inner wall surface of the probe tube.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: April 21, 2015
    Assignee: Horiba, Ltd.
    Inventors: Toshikazu Ohnishi, Toshiyuki Tsujimoto
  • Patent number: 9007594
    Abstract: The present invention provides a fiber laser gas detection system using active feedback compensation by a reference cavity, said system comprising: an optical fiber laser consists of a laser diode pump source, a wavelength division multiplexer, an active optical fiber and a fiber Bragg grating connected successively; an optical isolator coupled with said wavelength division multiplexer for blocking a reverse light transmission in said active fiber; a coupler connected with said optical isolator for dividing the laser light after being isolated by the optical isolator into a reference beam, a detecting beam and an intensity measuring beam according a certain ration power. The gas detection system according to the present invention can take advantages of the unique superiority of compact structure and narrow linewidth of the laser output of the fiber laser, and achieve a gas detection method with high sensitive and high precision by feedback controlling.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: April 14, 2015
    Assignee: Beijing Information Science & Technology University
    Inventors: Fei Luo, Lianqing Zhu, Mingli Dong, Wei He, Yinmin Zhang
  • Patent number: 9007223
    Abstract: The invention provides use of one or more emitted beams of radiation (16), for example, laser beam(s), in combination with an image capturing means (14), for example, one or more video cameras and/or optical elements to detect particles (30), for example, smoke particles, located in an open space (12).
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: April 14, 2015
    Assignee: Xtralis Technologies Ltd.
    Inventors: Ron Knox, Karl Boettger, Kemal Ajay
  • Patent number: 8994942
    Abstract: An interference object is identified in a scatter volume of an optical fire detector, which operates according to the scattered light principle. To achieve a higher level of interference protection using a simple structure in a compact fire detector, a common scatter volume is used instead of separate scatter volumes.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: March 31, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventor: Walter Vollenweider
  • Patent number: 8952821
    Abstract: In accordance with certain embodiments, a smoke detector utilizes a reflected-light signal and sensed ambient light to determine the presence of smoke particles.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: February 10, 2015
    Assignee: Valor Fire Safety, LLC
    Inventor: Matthew Erdtmann
  • Patent number: 8947244
    Abstract: In accordance with certain embodiments, a smoke detector utilizes broadband light with a plurality of wavelengths to determine the presence of smoke.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: February 3, 2015
    Assignee: Valor Fire Safety, LLC
    Inventor: Matthew Erdtmann
  • Patent number: 8947243
    Abstract: In accordance with certain embodiments, a smoke detector comprises a housing, a light source, one or more light detectors, and an evaluation circuit for determining the presence of smoke particles outside the housing based on light emitted from and reflected back into the housing, as well as light emitted within the housing without emission therefrom.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: February 3, 2015
    Assignee: Valor Fire Safety, LLC
    Inventor: Matthew Erdtmann
  • Patent number: 8939081
    Abstract: A weapon-locating ladar system estimates a backward trajectory of an airborne target by using flow field measurements to follow the wake turbulence trailing the airborne target from a position at which the target is detected backwards until the wake is no longer observable. The system may use the backward trajectory to estimate the point-of-origin of the target. The system may also use the flow field measurements along the backward trajectory to classify the target. Target classification may be used to refine the point-of-origin estimate, to influence counter-fire or to adapt the flow field measurements.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: January 27, 2015
    Assignee: Raytheon Company
    Inventors: Duane Donald Smith, Robert William Byren
  • Patent number: 8928885
    Abstract: A gas detection system using a semiconductor laser with a reference gas cavity compensation is provided, said system comprising a first light source emitting a first beam of a first wavelength as a detection beam; a second light source emitting a second beam of a second wavelength, which is different from the first wavelength, as a reference beam; a first wavelength division multiplexer connected with said first light source and said second light source; a broadband coupler connected with said first wavelength division multiplexer; a reference gas chamber, which is introduced with reference gas of the same composition as that of the gas to be detected and of a known concentration; a detection gas chamber, which is introduced with the gas to be detected.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: January 6, 2015
    Assignee: Beijing Information Science & Technology University
    Inventors: Fei Luo, Lianqing Zhu, Mingli Dong, Wei He, Yinmin Zhang
  • Patent number: 8907802
    Abstract: In accordance with certain embodiments, a smoke detector determines the presence of smoke particles outside its housing based on measurements of light detected at different wavelengths and corrected based on an ambient light level.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: December 9, 2014
    Assignee: Valor Fire Safety, LLC
    Inventor: Matthew Erdtmann
  • Patent number: 8854625
    Abstract: A particle monitoring apparatus includes a housing disposed on a gas exhaust line, a laser beam source for emitting a laser beam to particles in the gas exhaust line, a window member disposed at the housing for monitoring the particles in the gas exhaust line. The window member has a transparent base which is formed of a transparent resin or glass containing silicon and has a gas contact surface which faces a gas within the gas exhaust line, and a surface treatment layer formed on the gas contact surface of the transparent base, wherein the surface treatment layer contains one material selected from the group consisting of yttrium and calcium fluoride.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: October 7, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Tsuyoshi Moriya, Hiroyuki Nakayama
  • Patent number: 8842283
    Abstract: A system for detecting engine fluid constituents includes an engine having a sample channel having a conduit for a working engine fluid. The system includes an electromagnetic (EM) source that emits EM radiation through a first metal tube, where the EM radiation is EM energy at a wavelength of interest. The system further includes an EM detector that receives a remainder radiation through a second metal tube, the remainder radiation including the remaining EM radiation after passing through the sample channel. The system includes a controller that determines a composition indicator signal representative of an amount of a constituent in the working engine fluid in response to a strength of the remainder radiation, and determines a concentration of a component of interest according to the composition indicator signal.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: September 23, 2014
    Assignee: Cummins Inc.
    Inventors: John M. Janssen, Frederick H. Lindner, Jacob Y. Wong
  • Publication number: 20140268158
    Abstract: A method to collect 3D measurement data regarding a working fluid in a system, e.g., a turbo-machine, including: arranging sources of beams proximate to a passage of the working fluid in or downstream of the turbo-machine such that beams from the sources are projected through the working fluid; detecting intensities of the beams after they pass through the working fluid, and generating at least a two dimensional (2D) representation of the working fluid based on the detected intensities of the beams.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventor: Olgu TANRIVERDI
  • Patent number: 8818609
    Abstract: Disclosed herein are systems and methods for classifying regions of a scanning zone of a light detection and ranging (LIDAR) scan. One example includes a method for receiving information indicative of a light detection and ranging (LIDAR) scan of a vehicle. The method further involves generating a point map of the scanning zone. The method further involves generating a density profile of the point map that is indicative of density of one or more regions of the scanning zone characterized at one or more distances. The method further involves generating an elevation profile of the point map that is indicative of elevation of one or more reflected features in the scanning zone characterized at one or more distances. The method further involves classifying regions of the scanning zone based on the density profile and the elevation profile.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: August 26, 2014
    Assignee: Google Inc.
    Inventors: Aleksey S. Boyko, Jiajun Zhu
  • Publication number: 20140226162
    Abstract: A smoke detector with a transmitter (4) for a radiation that can be detected by a receiver (5), the transmitter (4) and the receiver (5) are to be assigned a monitored region (11).
    Type: Application
    Filed: July 25, 2013
    Publication date: August 14, 2014
    Applicant: SCHAKO KLIMA LUFT Ferdinand Schad KG
    Inventor: Rainer Mueller
  • Patent number: 8773272
    Abstract: A light scattering type smoke sensor includes a sensor body, light-emitter for emitting light toward an open smoke-sensing space and outputting a light-received signal according to the amount of scattering light received, and a fire judging unit for judging whether fire occurs or not on the basis of the amount of received light determined on the basis of the outputted light-received signal.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: July 8, 2014
    Assignee: Hochiki Corporation
    Inventor: Tetsuya Nagashima
  • Publication number: 20140160479
    Abstract: Aspects of the invention are directed to a device and method for detecting characteristics of a gas. The gas includes an exhausted plume from a vehicle or factory plant, leaked gas from an oil well or gas resource, or unidentified gas from an unknown source. The method includes sweepingly directing a beam of light through the gas to a target surface on which the beam of light is scattered, acquiring the scattered light scattered from the target surface, and processing the acquired scattered light to determine the characteristics of the gas, where the characteristics of the gas comprise at least one of a temperature of the gas and an amount of at least one ingredient of the gas.
    Type: Application
    Filed: February 14, 2014
    Publication date: June 12, 2014
    Applicant: Hager Environmental and Atmospheric Technologies, LLC
    Inventors: J. Stewart Hager, Geoffrey Yerem
  • Patent number: 8749789
    Abstract: A gas concentration measuring apparatus for measuring a concentration of a measurement target substance contained in a sample gas includes a light source unit in which a light source is arranged, and a sensor unit that is arranged on an optical path of the light source. The sensor unit includes a concentration measuring sensor configured to receive light from the light source after the light has passed through a sample cell unit and measure a concentration of the measurement target substance. The apparatus further includes an introducing device configured to introduce the sample gas to a vicinity of concentration measuring sensor. Therefore, a vicinity of the concentration measuring sensor is filled with an atmosphere of the sample gas so that a concentration of a measurement target substance contained in the sample gas is measured stably and accurately regardless of fluctuations in an ambient atmosphere of a measuring environment.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: June 10, 2014
    Assignee: Horiba, Ltd.
    Inventor: Takuji Oida
  • Patent number: 8743366
    Abstract: The present invention can detect smoke with high accuracy. A light emitting portion is provided with a light emitting element outputting the inspection light with high brightness, the distribution of which is adjusted. A reflection portion collects the inspection light from the light emitting element to the detection region. A diaphragm portion transmits the collected light toward the detection region, while removing light diffused to regions other than the detection region a light shielding portion shields the light diffused to the regions other than the detection region. The light emitting element is provided with a light source outputting the inspection light with high brightness and a parabolic reflective mirror whose curved surface reflects light from the light source toward the detection region, the reflected light being in a doughnut shape in which the center is relatively dark and the periphery is bright.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: June 3, 2014
    Assignee: Fenwal Controls of Japan, Ltd.
    Inventors: Kanji Numao, Tadayuki Shibuya
  • Patent number: 8717184
    Abstract: A sensor device detects an object, in particular for optically detecting smoke particles. The sensor device contains a transmitting device for emitting transmit radiation, a receiving device for receiving receive radiation having scattering radiation that is generated by an at least partial scattering of the transmit radiation by the object, and for outputting a measurement signal indicative of the receive radiation, a signal modification device for modifying the measurement signal and for outputting a modified measurement signal, a level of the modified measurement signal increasing after the transmitting device has been switched on, and a calibration device for monitoring the modified measurement signal. The calibration device is embodied such that a reaching of a predefined signal level for the modified measurement signal can be detected and that a time interval between the switching on of the transmitting device and the reaching of the predefined signal level can be determined.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: May 6, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hans Aebersold, Ke Wei Bi, Hu Lin Wang
  • Patent number: 8711358
    Abstract: A device that detects smoke, both indoor and outdoor; especially applicable in areas prone to sustained water flooding. It can be used in underground locations susceptible to water ingress so it can be submersed in up to 6 feet of water for up to 24 hours. Usable in applications that requires NEMA 6P or IP68 level of water protection.
    Type: Grant
    Filed: February 24, 2013
    Date of Patent: April 29, 2014
    Assignee: Temitayo Gboluaje
    Inventor: Temitayo Gboluaje
  • Patent number: 8705038
    Abstract: A particle detection unit including a detection chamber and a duct detector is disclosed. The duct detector is disposed within the detection chamber. The duct detector has a rod with a first and a second end where the first end is distal the second end. A reflector may be attached to the rod adjacent the first end. A sensor and emitter device may be attached to the rod and spaced apart from the reflector.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: April 22, 2014
    Assignee: Tyco Fire & Security GmbH
    Inventors: Daniel G. Farley, Anthony J. Capowski
  • Patent number: 8695400
    Abstract: In order to improve a system for monitoring the working area atmosphere of an operating engine, measuring devices (2) for determining readings for a gas and/or an aerosol in the working area (4) of an operating engine are used as a starting point. Each measuring device comprises a suction means (8) which extracts a gas and/or a mixture of an aerosol from the working area (4) of the operating engine and feeds it to a sensor unit (16, 17, 18). An electronics module for operating the sensor unit (16, 17, 18) is also present. The suction means is designed as a convection pump (8) preferably with a heating device (42) and a cooling device (44).
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: April 15, 2014
    Inventor: Uwe Gnauert
  • Patent number: 8654335
    Abstract: Method and device for quantifying ingredients of a plume. In one embodiment, the method includes sweepingly directing a beam of light through the plume to a surface on which the beam of light is scattered, acquiring the scattered light scattered from the surface, and processing the acquired scattered light to determine an amount of ingredients of the plume. In one embodiment, the height of the back of the vehicle is measured as the top of the plume for calculating the total mass-per-distance of the plume. In another embodiment, by comparing the absorption spectrum of the plume and the background absorption spectrum of which no plume exists, the non-methane hydrocarbons (NMHC) of the plume emitted from a vehicle can be quantified.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: February 18, 2014
    Assignee: Hager Environmental and Atmospheric Technologies, LLC
    Inventors: J. Stewart Hager, Geoffrey Yerem
  • Patent number: 8649013
    Abstract: A probe for gas analysis is provided in a pipe through which sample gas flows. The probe includes a tubular member and one or more sample gas inflow portions. The tubular member is disposed to cross a flow of the sample gas, and includes a measurement field to which the sample gas is introduced. The one or more sample gas inflow portions are provided in the tubular member. The sample gas flows around, and flows into the measurement field through the one or more sample gas inflow portions.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: February 11, 2014
    Assignee: Horiba, Ltd
    Inventors: Shigeyuki Hokamura, Toshikazu Ohnishi, Takuya Ido
  • Patent number: 8638436
    Abstract: [Problem to be Solved] To provide a smoke sensing system, a smoke sensor and a receiver that can accurately determine the type of smoke.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: January 28, 2014
    Assignee: Hochiki Corporation
    Inventor: Manabu Dohi
  • Patent number: 8625099
    Abstract: A particle concentration measuring device includes: a measurement region formation part which has a wall (10) of substantially ring-form and through an inner opening of which gas relatively flows orthogonally; a light curtain forming unit (12A, 12B) forming a planar light curtain (FL) in the inner opening: a particle detecting unit (15) receiving scattered light from particles passing through the light curtain (FL) to detect the particles; and a calculating unit (22) calculating particle concentration based on the total number of the particles detected by the particle detecting unit (15) in a volume of an airflow passing through the light curtain (FL) in a unit time.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: January 7, 2014
    Assignee: Shin Nippon Air Technologies Co., Ltd.
    Inventors: Kazuhiko Sakamoto, Hiroshi Kawakita, Hiroyuki Okami, Yusuke Iso, Ryuta Okamoto
  • Patent number: 8559721
    Abstract: A method and apparatus for quantitative and qualitative imaging of fugitive emissions of gas, vapors, or fumes are described. The apparatus includes a filter mosaic for placement in registration over an imaging focal plane array (FPA). The filter mosaic includes at least two filter elements providing transmission response functions for transmitting wavelengths of light corresponding to an absorption wavelength (online wavelength) and a non-absorption wavelength (offline wavelength) of the targeted fugitive emission. Also described is an image processing method for transforming a filtered image into an image of the targeted fugitive emission.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: October 15, 2013
    Assignee: Exelis, Inc.
    Inventor: Jarett Levi Bartholomew
  • Patent number: 8534116
    Abstract: A system for measuring size segregated mass concentration of an aerosol. The system includes an electromagnetic radiation source with beam-shaping optics for generation of a beam of electromagnetic radiation, an inlet sample conditioner with adjustable cut-size that selects particles of a specific size range, and an inlet nozzle for passage of an aerosol flow stream. The aerosol flow stream contains particles intersecting the beam of electromagnetic radiation to define an interrogation volume, and scatters the electromagnetic radiation from the interrogation volume. The system also includes a detector for detection of the scattered electromagnetic radiation an integrated signal conditioner coupled to the detector and generating a photometric output, and a processor coupled with the conditioner for conversion of the photometric output and cut-size to a size segregated mass distribution.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: September 17, 2013
    Assignee: PNC Bank, National Association
    Inventors: Xiaoliang Wang, Jugal Agarwal, George J. Chancellor, James Evanstad, Anthony E Hase, Sreenath Avula, James E. Farnsworth, David A Lieder
  • Patent number: 8531671
    Abstract: Apparatus and methods are described for determining particulate concentrations in an exhaust gas. One embodiment provides a method of analyzing particles in a gas using an apparatus including a probe and an analyzer. The method includes obtaining a sample of particle laden gas through the probe; obtaining ambient air through the probe; diluting the sample with the ambient air; and providing the diluted sample to the analyzer. Another embodiment provides an apparatus for analyzing particles in a gas. The apparatus includes a probe adapted to accept a gas or ambient air; a volume to dilute the gas with the ambient air; an analyzer responsive to particles in the gas; and electronics to operate the apparatus. The electronics instructs a user to first provide a sample and then provide ambient air into the volume, and then analyzes substantially all of the sample and ambient air for particles.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: September 10, 2013
    Assignee: Magee Scientific Corporation
    Inventor: Anthony D. A. Hansen
  • Publication number: 20130208281
    Abstract: This invention relates to a suction-type smoke sensing system which detects smoke with high accuracy and rapidly and identifies a fire occurrence spot quickly. The system of the present invention is provided with a piping for sucking air in each region to be inspected, a photoelectric smoke sensor which, when air in each of the regions to be inspected is sucked, senses mixing of smoke in the air, and a control unit which sucks the air in the region to be inspected and is electrically connected to the photoelectric smoke sensor so as to receive and process a detection signal.
    Type: Application
    Filed: September 2, 2011
    Publication date: August 15, 2013
    Applicant: FENWAL CONTROLS OF JAPAN, LTD.
    Inventors: Shintaro Masumoto, Kazuhisa Itoh, Masao Iguchi, Fumiyoshi Kobayashi, Satoru Nakahata
  • Patent number: 8508376
    Abstract: The invention provides use of one or more emitted beams of radiation (16), for example, laser beam(s), in combination with an image capturing means (14), for example, one or more video cameras and/or optical elements to detect particles (30), for example smoke particles, located in an open space (12).
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: August 13, 2013
    Assignee: VFS Technologies Limited
    Inventors: Ron Knox, Karl Boettger, Kemal Ajay
  • Patent number: 8482735
    Abstract: A laser gas analyzer which can include a light source unit including a diode laser that irradiates a gas to be measured with laser light while scanning a wavelength thereof; a detection unit including a light receiving element, a gain-variable amplifier into which an output signal of the light receiving element is input, an A/D converter into which the output signal of the amplifier is input, and an arithmetic processing unit that performs a concentration analysis of the gas to be measured; a peak-to-peak detector that detects a peak-to-peak value of the output data of the A/D converter in each scan of the wavelength of the laser light irradiated from the diode laser; and a gain adjustment unit that, when the output signal of the peak-to-peak detector deviates from a preset threshold, adjusts the gain of the amplifier in a direction of bringing the output signal back to within the threshold.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: July 9, 2013
    Assignee: Yokogawa Electric Corporation
    Inventor: Masanori Okada
  • Publication number: 20130100451
    Abstract: Method and device for quantifying ingredients of a plume. In one embodiment, the method includes sweepingly directing a beam of light through the plume to a surface on which the beam of light is scattered, acquiring the scattered light scattered from the surface, and processing the acquired scattered light to determine an amount of ingredients of the plume. In one embodiment, the height of the back of the vehicle is measured as the top of the plume for calculating the total mass-per-distance of the plume. In another embodiment, by comparing the absorption spectrum of the plume and the background absorption spectrum of which no plume exists, the non-methane hydrocarbons (NMHC) of the plume emitted from a vehicle can be quantified.
    Type: Application
    Filed: November 29, 2012
    Publication date: April 25, 2013
    Applicant: Hager Environmental and Atmospheric Technologies, LLC
    Inventor: Hager Environmental and Atmospheric Technologies, LLC
  • Patent number: 8395778
    Abstract: A soot number determining device has an intake line for taking in a soot-containing gas through a filter paper that has been introduced into the intake line. A transport apparatus transports a soot spot, which is produced at an intake position by virtue of the gas being taken in on the filter paper, by transporting the filter paper further to an evaluation position. A device is used to determine the extent of blackening of the filter paper.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: March 12, 2013
    Assignee: Testo AG
    Inventors: Marcus Schumann, Markus Grobert, Patrick Schwoerer
  • Patent number: 8359903
    Abstract: A photoacoustic detector for providing a measurement, includes a first light source and a second light source each configured to provide light of a same intensity while retaining a same spectral distribution. Additionally, the photoacoustic detector includes a first beam path allocated to the first light source and at least one second beam path allocated to the second light source, wherein a different absorption of light occurs in the first path and the second beam path in at least one selected wavelength range. Further, the photoacoustic detector includes a photoacoustic measuring cell; and a mechanism for alternately guiding light from the first beam path and from the second beam path into the photoacoustic measuring cell.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: January 29, 2013
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Andras Miklos, Judit Angster
  • Publication number: 20120325184
    Abstract: A system for detecting engine fluid constituents includes an engine having a sample channel having a conduit for a working engine fluid. The system includes an electromagnetic (EM) source that emits EM radiation through a first metal tube, where the EM radiation is EM energy at a wavelength of interest. The system further includes an EM detector that receives a remainder radiation through a second metal tube, the remainder radiation including the remaining EM radiation after passing through the sample channel. The system includes a controller that determines a composition indicator signal representative of an amount of a constituent in the working engine fluid in response to a strength of the remainder radiation, and determines a concentration of a component of interest according to the composition indicator signal.
    Type: Application
    Filed: July 2, 2012
    Publication date: December 27, 2012
    Inventors: John M. Janssen, Frederick H. Lindner, Jacob Y. Wong
  • Patent number: 8330957
    Abstract: In one aspect, the present invention relates to a device quantifying absolute amounts of ingredients of a plume. In one embodiment, the device comprises a source for emitting a beam of light and transmitting the emitted light through the plume to a surface on which the transmitted light is scattered, a detector for acquiring an image of the exhaust plume, the acquired image containing information of absorption of the scattered light scattered from the surface, and a processor for processing the acquired image to determine an absolute amount of at least one of components of the exhaust plume.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: December 11, 2012
    Assignee: Hager Enviromental and Atmospheric Technologies, LLC
    Inventor: J. Stewart Hager
  • Patent number: 8294899
    Abstract: A method of mapping concentrations of airborne matter from an emission source of interest in an emission plume is provided. The method involves measuring airborne matter at one or more than one identified locations using an optical sensing instrument (OSI) operatively connected with one or more than one matter samplers and mounted on a vehicle. The one or more than one airborne matter samplers are passed through an airspace to be sampled, and one or more concentration measurements are obtained. Geographic positions and altitude values for each of the one or more identified locations are established, and a point concentration measurement for the airborne matter for each identified location determined. The concentration measurements are mapped relative to the geographic position and altitude values for each of the one or more identified locations to obtain an airborne matter concentration distribution map in one or more measurement surfaces through a cross-section or profile of the emission plume.
    Type: Grant
    Filed: October 6, 2010
    Date of Patent: October 23, 2012
    Assignee: Golder Associates Ltd.
    Inventor: Colin Irvin Wong
  • Patent number: 8294587
    Abstract: A smoke detector has a housing, a smoke sensor in the housing capable of detecting smoke therein, and an alarm connected to the sensor signaling when the smoke sensor detects smoke. A partition subdivides the housing into separate first and second chambers, and the housing is formed with first and second smoke holes allowing air from the exterior into the first and second chambers. The partition has a sensor port provided with a sensor for detecting air flow through the sensor port and a fan port having a fan for drawing air from one of the chambers and forcing it into the other chamber. A controller connected to the fan and to the air-flow sensor operates the fan means to move air from the one chamber through the fan port into the other chamber and generates an output when air flow through the sensor port exceeds a predetermined limit.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: October 23, 2012
    Assignee: ista International GmbH
    Inventors: Michael Danz, Sebastian Schnepel, Gerhard Niederfeld
  • Patent number: 8289178
    Abstract: A system for analyzing smoke has a plurality of units, wherein each unit includes an optical emitter for alternately directing horizontally and vertically polarized light along a beam path, and into a smoke cloud, to generate scattered light. A horizontally polarized detector and a vertically polarized detector are positioned at different locations, but at a same distance and scattering angle relative to the beam path. Each unit has a different wavelength. A computer receives signals from the detectors of all units, in response to each emitter, for analysis of the smoke.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: October 16, 2012
    Assignee: Volution
    Inventors: Michael S. Slemon, Charles S. Slemon
  • Patent number: 8284404
    Abstract: A method and device for measuring trace levels of particles in an air sample is described. A device operating in a gradiometer configuration with two cavities built from a monolithic structure and utilizing a single probe laser, provides common mode subtraction of acoustic, vibrational, laser intensity and other noise sources, which allows sensitivity more closely approaching the quantum limit. Differential measurements between the two cavities occur simultaneously, which reduces errors due to cavity drift. Absorptive gradiometry can therefore provide noise immune detection for trace gasses, including broad linewidth absorbers where frequency-noise immune schemes are not practical. Differential measurements can be used for background subtraction, sensing vapor plum gradients and determining vapor plume propagation direction.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: October 9, 2012
    Assignee: Entanglement Technologies, Inc.
    Inventors: Ari K. Tuchman, John K. Stockton
  • Patent number: 8248612
    Abstract: Provided are sensors and methods of measuring the oxygen concentration of a fluid. An excitation light source is in optical communication with a transducer for transmitting an excitation light that is at least partially absorbed by the transducer. The transducer has a property of photoluminescence, and enters a higher energy state by at least partially absorbing the excitation light and enters a lower energy state through radiation of emitted light, thus producing spectral indicia. A light detection system, which is also in optical communication with the transducer, processes the spectral indicia to determine the concentration of oxygen in the fluid.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: August 21, 2012
    Assignee: UT-Batelle, LLC
    Inventors: James E. Parks, II, William P. Partridge, Jr.
  • Patent number: RE44976
    Abstract: Apparatus for obtaining the speed and acceleration of a motor vehicle in which the speed and acceleration are used in combination with exhaust emissions data obtained from the motor vehicle to analyze information about the pollutants being dispersed into the air by the motor vehicle. The apparatus includes a first radiation source producing a visible laser beam received by a first detector and a second radiation source producing a visible laser beam received by a second detector. The first and second radiation sources are arranged along the roadway with a known spacing and at a height so that the visible laser beams are interrupted by the front and rear wheels of the motor vehicle as it passes along the roadway. The detectors provide output pulses indicating whether the visible laser beams are interrupted and the time of the occurrence of each of the pulses is measured and recorded. An analyzer then calculates the speed and acceleration from the known spacing distance and the stored time measurements.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: July 1, 2014
    Assignee: Envirotest Systems Holdings Corp.
    Inventors: James H. Johnson, John DiDomenico