Ionization Patents (Class 340/629)
  • Patent number: 9823280
    Abstract: External conditions, e.g., smoke, temperature, humidity, humidity, pressure, flow rate, etc., affects a sensor's characteristics, wherein the sensor provides a current output representative of its characteristics as affected by the external conditions. The current output of the sensor is coupled to a sample and hold capacitor for a precision time period thereby charging the sample and hold capacitor to a voltage proportional to current provided by the sensor over the precision time period. The voltage on the sample and hold capacitor is converted to a digital representation and a determination is made whether the external condition represents an alarm situation, e.g., smoke detected from a fire.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: November 21, 2017
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventor: Joseph Julicher
  • Patent number: 9805572
    Abstract: An ion chamber provides a current representative of its characteristics as affected by external conditions, e.g., clean air or smoke. A direct current (DC) voltage is applied to the ion chamber at a first polarity and the resulting current through the ion chamber and parasitic leakage current is measured at the first polarity, then the DC voltage is applied to the ion chamber at a second polarity opposite the first polarity, and the resulting current through the ion chamber and parasitic leakage current is measured at the second polarity. Since substantially no current flows through the ion chamber at the second polarity, the common mode parasitic leakage current contribution may be removed from the total current measurement by subtracting the current measured at the second polarity from the current measured at the first polarity, resulting in just the current through the ion chamber.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: October 31, 2017
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Joseph Julicher, Keith Curtis, Paul N. Katz
  • Patent number: 9568356
    Abstract: A sensor adapted to be mounted to a surface has a rotatable enclosure that may be used, for example, to direct a lens of the sensor towards a window. The daylight sensor includes a photosensitive circuit for measuring a light intensity in the space, a cover portion, and a base portion adapted to be mounted to the surface. The cover portion is rotatable with respect to the base portion, for example, to direct the lens towards the window after the base portion is mounted to the surface. The base portion may also include a cylindrical wall having a channel adapted to capture a snap of the cover portion, such that the snap may move angularly through the channel to allow for rotation of the cover portion with respect to the base portion to a plurality of discrete positions.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: February 14, 2017
    Assignee: Lutron Electronics Co., Inc
    Inventors: Greg Edward Sloan, Fabian Brugger, Jeffrey A. Kessler
  • Patent number: 9483924
    Abstract: A smoke detector system that includes an airflow barrier installed between a detector base unit and a mounting surface to ensure there is separation between the detector base unit and the mounting surface. The barrier isolates and seals the smoke detector to prevent the formation of condensation in or around the smoke detector. The barrier further includes a cavity that can collect condensation if condensation does occur. The condensation is then directed to a channel that extends around the periphery of the airflow barrier. Additionally, the channel includes weep holes so that condensation has a means to exit the detector.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: November 1, 2016
    Assignee: Tyco Fire & Security GmbH
    Inventors: Alexander Singer Andrews, Donald Dunn Brighenti
  • Patent number: 9467141
    Abstract: A microcontroller measures capacitance of capacitive sensors having guard rings associated therewith. A guard ring is provided around each capacitive sensor plate and is charged to substantially the same voltage as a voltage on the associated capacitive sensor plate. The guard ring reduces parasitic capacitances of the capacitive sensor plate caused by differences in voltage potentials between the capacitive sensor plate, and adjacent circuit conductors, ground planes and power planes. An analog output is buffered and coupled to an analog input coupled to the capacitive sensor plate, and is used to drive the guard ring voltage to substantially the same voltage as the voltage on the capacitive sensor plate.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: October 11, 2016
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Zeke Lundstrum, Keith Curtis, Burke Davison, Sean Steedman, Yann LeFaou
  • Patent number: 9437093
    Abstract: An ion chamber provides a current representative of its characteristics as affected by external conditions, e.g., clean air or smoke. A direct current (DC) voltage is applied to the ion chamber at a first polarity and the resulting current through the ion chamber and parasitic leakage current is measured at the first polarity, then the DC voltage is applied to the ion chamber at a second polarity opposite the first polarity, and the resulting current through the ion chamber and parasitic leakage current is measured at the second polarity. Since substantially no current flows through the ion chamber at the second polarity, the common mode parasitic leakage current contribution may be removed from the total current measurement by subtracting the current measured at the second polarity from the current measured at the first polarity, resulting in just the current through the ion chamber.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: September 6, 2016
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Joseph Julicher, Keith Curtis, Paul N. Katz
  • Patent number: 9257980
    Abstract: A guard ring is provided around each capacitive sensor plate and charged to substantially the same voltage as a voltage on the capacitive sensor plate. The guard ring reduces parasitic capacitances of the capacitive sensor plate caused by differences in voltage potentials between the capacitive sensor plate, and adjacent circuit conductors, ground planes and power planes. Two digital outputs and associated voltage divider resistors are used to drive the guard ring voltage to substantially the same voltage as the voltage on the capacitive sensor plate.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: February 9, 2016
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Zeke Lundstrum, Keith Curtis, Burke Davison, Sean Steedman, Yann LeFaou
  • Patent number: 9252769
    Abstract: An analog-to-digital (ADC) controller is used in combination with a digital processor of a microcontroller to control the operation of capacitance measurements using the capacitive voltage division (CVD) method. The ADC controller handles the CVD measurement process instead of the digital processor having to run additional program steps for controlling charging and discharging of a capacitive touch sensor and sample and hold capacitor, then coupling these two capacitors together, and measuring the resulting voltage charge thereon in determining the capacitance thereof. The ADC controller may be programmable and its programmable parameters stored in registers.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: February 2, 2016
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Zeke Lundstrum, Keith Curtis, Burke Davison, Sean Steedman, Yann LeFaou
  • Patent number: 9207209
    Abstract: A smoke detection sensor ion chamber has a leakage current that is dependent upon the permittivity of the ionized gas (air) in the chamber. Smoke from typical fires is mainly composed of unburned carbon that has diffused in the surrounding air and rises with the heat of the fire. The permittivity of the carbon particles is about 10 to 15 times the permittivity of clean air. The addition of the carbon particles into the air in the ion chamber changes the permittivity thereof that is large enough to detect by measuring a change in the leakage current of the ion chamber.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: December 8, 2015
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Benjamin T. Cooke, Joseph Julicher, Keith Edwin Curtis
  • Patent number: 9201051
    Abstract: The smoke detector includes: a chamber (1) provided with apertures (3) allowing the smoke to enter a detection area (D), a light source (S) configured to emit towards the detection area (D), and a light receiver (R) configured so as to receive the light coming from the detection area (D). A concentration element (6, 7) is provided so as to create a non-uniform electric field in the detection area (D), that, in the presence of smoke, can polarize smoke particles entering the detection area (D). The non-uniform electric field has a spatial gradient configured to exert a dielectrophoretic force on the smoke particles so as to drive the polarized smoke particles into a concentration zone (C) in the detection area (D) and to aggregate them together to form quasi “big particles”.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: December 1, 2015
    Assignee: FINSECUR
    Inventor: Jaques Lewiner
  • Patent number: 9189940
    Abstract: A smoke detection sensor ion chamber has a capacitance and a change in the permittivity of that capacitance dielectric (ionized air in the chamber) may be used to detect the presence of smoke therein. Smoke from typical fires is mainly composed of unburned carbon that has diffused in the surrounding air and rises with the heat of the fire. The permittivity of the carbon particles is about 10 to 15 times the permittivity of clean air. The addition of the carbon particles into the air in the ion chamber changes in the permittivity thereof that is large enough to measure by measuring a change in capacitance of the ion chamber.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: November 17, 2015
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Benjamin T. Cooke, Joseph Julicher, Keith Edwin Curtis
  • Patent number: 9176088
    Abstract: A smoke detection sensor ion chamber has a capacitance and a change in the permittivity of that capacitance dielectric (ionized air in the chamber) may be used to detect the presence of smoke therein. Smoke from typical fires is mainly composed of unburned carbon that has diffused in the surrounding air and rises with the heat of the fire. The permittivity of the carbon particles is about 10 to 15 times the permittivity of clean air. The addition of the carbon particles into the air in the ion chamber changes in the permittivity thereof that is large enough to measure by measuring a change in capacitance of the ion chamber.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: November 3, 2015
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Benjamin T. Cooke, Joseph Julicher, Keith Edwin Curtis
  • Patent number: 9108157
    Abstract: An exhaust after-treatment system including an exhaust passage having at least a first portion and a second portion. An exhaust treatment component may be positioned within the exhaust passage between the first and second portions, and an insulating blanket insulates each of the first portion, second portion, and the exhaust treatment component. Temperature sensors may be positioned at the first portion, the second portion, the exhaust treatment component, wherein each sensor monitors the temperature at its location. A controller may have access to temperature data associated with an insulated exhaust after-treatment system, and the controller compares the monitored temperatures to the temperature data to determine whether a difference exceeding a predetermined threshold exists. If the difference exceeds a predetermined threshold, the controller outputs an error signal identifying particular portions of the exhaust system that are no longer insulated.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: August 18, 2015
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Michael Golin, John W. DeGeorge
  • Patent number: 9071264
    Abstract: An automated sequencer for a microcontroller is provided which makes a CVD conversion process a hardware function. The sequencer controls the charging/discharging of the sensor and ADC sample-and-hold capacitances, as well as the voltage division process. It also initiates the ADC conversion, with an optional second conversion for greater resolution, or a differential conversion.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: June 30, 2015
    Assignee: MICROCHIP TECHNOLOGY INCORPORATED
    Inventors: Zeke Lundstrum, Keith Curtis, Burke Davison, Sean Steedman, Yann LeFaou
  • Patent number: 9030328
    Abstract: An integrated circuit, in particular a microcontroller, for operation in an area with ionizing radiation, has at least one part of a temperature control circuit. The temperature control circuit performs a regulated increase in the circuit temperature to a predefined, essentially constant operating temperature, by increasing the electrical power consumption of the circuit by an adjustable additional electrical power. The circuit has an output facility for information about damage to the integrated circuit caused by the ionizing radiation impacting thereon, it being possible to determine the information about damage from a radiation-dose-dependent decrease in the adjustable additional electrical power.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: May 12, 2015
    Assignee: Siemens Aktiengsellschaft
    Inventor: Hans Aebersold
  • Patent number: 9013316
    Abstract: The smoke detector comprises a housing provided with one or more openings for the passage of smoke particles into an interior of the housing. A first electrode and a second electrode are disposed in the interior of the housing and generate an electric field by application of an electrical potential therebetween. A detection chamber is defined between the first electrode and the second electrode, the detection chamber comprising an ionization zone for the generation of charged particles by ionization of air in the vicinity of the second electrode and a drift zone for the movement of charged particles towards the first electrode. A measurement device measures an electrical parameter representative of the electrical current generated between the first electrode and the second electrode by the charged particles.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: April 21, 2015
    Assignees: Finsecur, Institut pour le Developpement de la Science, l'Education et la Technologie (IDSET)
    Inventors: Zohreh Mokhtari, Stéphane Hole, Jacques Lewiner
  • 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
  • Publication number: 20150084776
    Abstract: Radioactive integrated circuit (IC) devices with radioactive material embedded in the substrate of the IC itself, and including logic for “fingerprinting” (that is, determining characteristics that identify the source of the radioactive source material). Radioactive IC devices with embedded detector hardware that determine aspects of radioactivity such as total dose and/or ambient radiation. Radioactive IC devices that can determine an elapsed time based on radioactive decay rates. Radioactive smoke detector using man-made, relatively short half-life radioactive source material.
    Type: Application
    Filed: September 26, 2013
    Publication date: March 26, 2015
    Applicant: International Business Machines Corporation
    Inventors: Michael S. Gordon, Kenneth P. Rodbell
  • Patent number: 8952822
    Abstract: A smoke alarm comprises smoke detection circuitry for detecting smoke and generating a detection signal responsive thereto. Proximity detection circuitry generates a proximity detection signal responsive to detection of an object within in a selected distance of the smoke alarm. Alarm generation circuitry generates an audible alarm responsive to the detection signal. The audible alarm may be deactivated for a predetermined period of time responsive to at least one proximity detection signal.
    Type: Grant
    Filed: May 5, 2014
    Date of Patent: February 10, 2015
    Assignee: Google Inc.
    Inventor: Wayne T. Holcombe
  • Patent number: 8842016
    Abstract: A system for notifying when a fire extinguisher is discharged or moved uses a device mounted on the fire extinguisher for monitoring one or more conditions. For example, the device may be interconnected with a trigger detecting mechanism otherwise present on the extinguisher or sense a sudden drop in pressure to detect when the extinguisher is activated. An accelerometer may be provided to detect motion. GPS processing can identify the location of the fire extinguisher when an event occurs. When the device detects a change in one or more of the conditions, or needs to send periodic updates of the fire extinguisher conditions, a message is forwarded from the device to a third party clearinghouse via a wireless communication network. The clearinghouse reviews the data, and forwards the data, as may be appropriate, to one or more authorized parties identified in the database.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: September 23, 2014
    Assignee: Cellco Partnership
    Inventors: Carlos A. Cazanas, Azam Khan, Terence John Sullivan
  • Patent number: 8810416
    Abstract: An assembly (13) for monitoring ionising radiation comprises a detector substrate (2) for generating electronic charge responsive to incident ionising radiation, the detector substrate (2) having an array of ionising radiation sense volumes (12) formed in it. A circuit substrate (14) supporting an array of read-out circuits (16) corresponding to the array of sense volumes is mechanically and electrically coupled to the detector substrate (14). Each of the read-out circuits (16) is switchable between first and second charge integration modes for receiving charge from a corresponding sense volume. A charge integration circuit (30) is configured in the first charge integration mode to integrate charge corresponding to sensing of a single ionising radiation detection event in a corresponding sense volume and in the second charge integrating mode to integrate charge corresponding to sensing a plurality of ionising radiation detection events in the corresponding sense volume.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: August 19, 2014
    Assignee: Radiation Watch Limited, LLC
    Inventors: Peter Trevor Doughty, Michael John Anderson, David Jeremy Prendergast, Ian Benson
  • Patent number: 8766807
    Abstract: A microprocessor controlled hazardous condition detection system with volatile and non-volatile memory containing a sensor package and an alarm element associated with the sensor package through a microprocessor, wherein a clean air value is loaded into the volatile memory; where the microprocessor receives periodic readings of predetermined environmental conditions from the sensor package, stores the periodic readings in the volatile memory, calculates an average of a plurality of said periodic readings and generates a new clean air value by shifting the clear air value loaded into said volatile memory by a differential between the calculated average environmental reading and the established clean air value and generates an alarm if the difference exceeds an established threshold.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: July 1, 2014
    Assignee: Universal Security Instruments, Inc.
    Inventor: Eric V. Gonzales
  • Patent number: 8754775
    Abstract: A smoke alarm comprises smoke detection circuitry for detecting smoke and generating a detection signal responsive thereto. Proximity detection circuitry generates a proximity detection signal responsive to detection of an object within in a selected distance of the smoke alarm. Alarm generation circuitry generates an audible alarm responsive to the detection signal. The audible alarm may be deactivated for a predetermined period of time responsive to at least one proximity detection signal.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: June 17, 2014
    Assignee: Nest Labs, Inc.
    Inventor: Wayne T. Holcombe
  • Patent number: 8742939
    Abstract: This disclosure describes systems, methods, and apparatus for rapidly detecting smoke or other particles or aerosols generated in any one or more compartments of a multi-compartment electronics enclosure. The herein disclosed system includes a particle sensor and an airflow controller that pulls air and particles from the one or more compartments through fluid pathways and into the particle sensor.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: June 3, 2014
    Assignee: Advanced Energy Industries, Inc.
    Inventors: Scott Polak, Jeffrey Roberg, Michael Mueller
  • Publication number: 20140097958
    Abstract: An integrated circuit, in particular a microcontroller, for operation in an area with ionizing radiation, has at least one part of a temperature control circuit. The temperature control circuit performs a regulated increase in the circuit temperature to a predefined, essentially constant operating temperature, by increasing the electrical power consumption of the circuit by an adjustable additional electrical power. The circuit has an output facility for information about damage to the integrated circuit caused by the ionizing radiation impacting thereon, it being possible to determine the information about damage from a radiation-dose-dependent decrease in the adjustable additional electrical power.
    Type: Application
    Filed: October 18, 2012
    Publication date: April 10, 2014
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Hans AEBERSOLD
  • Patent number: 8681012
    Abstract: A detector (101) for detecting smoke from a fire and generating an alarm has a detection chamber (105) in which a light source (111) and a light detector (113) are arranged. In normal use, the light detector (113) only receives light from the light source that has been scattered by the presence of smoke in the chamber (105). When testing the detector (101), the light detector (113) receives light from the light source (111) by presenting a reflecting surface (129a) of a rotor member (129) to reflect light from the light source (111) towards the light detector (113). In normal use, the rotor member (129) is positioned so that the reflecting surface (129a) no longer reflects light from the light source (111) towards the light detector (113).
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: March 25, 2014
    Assignee: Marshell Electrical Contractors Limited
    Inventors: Mark Patrick Murray, Mark John Downes
  • Patent number: 8624745
    Abstract: A high sensitivity smoke detector includes a housing which defines an internal, closed, scattering region, and an external, open scattering region. A cyclone-type separator draws atmosphere adjacent the external scattering region into the detector and separates the larger, non-smoke related particulate matter which flows into the internal, closed scattering region for sensing and subsequent analysis. An annular inflow pattern can be established with a central exit flow.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: January 7, 2014
    Assignee: Honeywell International Inc.
    Inventor: Michael Barson
  • 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: 8441368
    Abstract: A surface mountable radiation guide for a radiation path between a measurement volume (1) and an electro-optical component has a first radiation interface in a radiation path towards the measurement volume, a third radiation interface in a radiation path towards the electro-optical component, and a reflecting portion forming a first radiation path between the first and the third radiation interface, said first radiation path providing a focus region at the measurement volume.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: May 14, 2013
    Assignee: Excelitas Technologies Singapore Pte. Ltd.
    Inventors: Martin Liess, Arthur Barlow
  • Patent number: 8395501
    Abstract: A hazardous condition detection system with a sensor package employing a reduced resource microprocessor capable of dynamic alarm sensitivity adjustment having volatile and non-volatile memory which receives periodic raw sensor readings from the sensor package and preprocesses each received periodic raw sensor reading by employing at least three distinctive filtering constants which are compared to alarm thresholds stored in memory to generate an alarm condition signal when ionization levels in the ambient environment exceed stored thresholds.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: March 12, 2013
    Assignee: Universal Security Instruments, Inc.
    Inventor: Eric V. Gonzales
  • Publication number: 20130027211
    Abstract: The smoke detector comprises a housing provided with one or more openings for the passage of smoke particles into an interior of the housing. A first electrode and a second electrode are disposed in the interior of the housing and generate an electric field by application of an electrical potential therebetween. A detection chamber is defined between the first electrode and the second electrode, the detection chamber comprising an ionisation zone for the generation of charged particles by ionisation of air in the vicinity of the second electrode and a drift zone for the movement of charged particles towards the first electrode. A measurement device measures an electrical parameter representative of the electrical current generated between the first electrode and the second electrode by the charged particles.
    Type: Application
    Filed: July 28, 2011
    Publication date: January 31, 2013
    Applicants: INSTITUT POUR LE DEVELOPPEMENT DE LA SCIENCE, L'EDUCATION ET LA TECHNOLOGIE (IDSET), FINSECUR
    Inventors: Zohreh MOKHTARI, Stéphane HOLE, Jacques LEWINER
  • Patent number: 8354935
    Abstract: A method and apparatus is provided for activating a carbon monoxide detector. The method includes the steps of the carbon monoxide detector measuring a current carbon monoxide level, the carbon monoxide detector comparing the current carbon monoxide level with a first threshold value, determining whether the current carbon monoxide level exceeds the first threshold value, entering an alarm state upon detecting that the current carbon monoxide level exceeds the first threshold value after a first predetermined time period, determining from memory whether the carbon monoxide detector had previously been in an alarm state before activation and upon detecting that the current carbon dioxide level does not exceed the first threshold and the carbon monoxide detector was previously in the alarm state, resuming the alarm state after a second predetermined time period.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: January 15, 2013
    Assignee: Honeywell International Inc.
    Inventor: Timothy A. Rauworth
  • Patent number: 8334782
    Abstract: A smoke detector comprises a soft x-ray source (10) and an air space (16) communicating with ambient air (18) and positioned so that soft x-rays produced by the soft x-ray source (10) pass into the air space (16) to ionise air in the air space (16). A detector (14) is positioned for detecting ionised air in the air space (16). Smoke particles entering into the air space (16) mop up ionised air. This leads to a reduction in the number of ions detected which triggers an alarm. The soft x-ray source (10) preferably comprises a substrate (22) on which are provided a plurality of nanometer scale elongate structures (28). The elongate structures (28) are provided in an evacuated chamber (42) formed between the substrate (22), a spacer (30), and a laminated film (36). The laminated film (36) comprises an aluminum foil layer (38) and a supporting nylon layer (40). A voltage converting circuit (44) is powered by a 9 volt DC battery and applies a 1.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: December 18, 2012
    Assignee: Walter Kidde Portable Equipment, Inc.
    Inventor: Max D. Allsworth
  • Patent number: 8284065
    Abstract: A microprocessor controlled hazardous condition detection system with volatile and non-volatile memory containing a sensor package, the sensor package containing sensors exposed to the ambient environment, and an alarm element coupled to the sensor package through a microprocessor where the microprocessor includes a memory storage device containing a plurality of alarm thresholds stored therein, each of the plurality of alarm thresholds being associated with a predetermined set of levels in the ambient environment where the microprocessor receives periodic readings from the sensor package, the microprocessor conditions the received readings by removing a selected amount of noise and attenuation therefrom, selects and employs an optimized alarm threshold from a plurality of stored alarm thresholds and activates the alarm element upon detecting a threshold levels in the ambient environment greater than the selected alarm threshold.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: October 9, 2012
    Assignee: Universal Security Instruments, Inc.
    Inventor: Eric Gonzales
  • Patent number: 8138909
    Abstract: A method and apparatus for providing assay information to a portable detection unit, by way of a remote server in communication with the portable detection unit or a consumable with stored information for use with the portable detection unit. Global Positioning System (GPS) information is provided to a portable detection unit having a GPS receiver, so that the unit can determine its current position, including altitude. Based on the determined position, assays and parameters, such as PCR melt temperatures, can be selected. Assays to be performed by the portable detection unit can be selected based on the results of a prior assay.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: March 20, 2012
    Assignees: Smiths Detection Inc., Smiths Detection—Watford Limited
    Inventors: Jay Lewington, John Walter Czajka, Douglas Jason Green, Carmelo Volpe
  • Patent number: 8120501
    Abstract: A window with built-in devices that senses carbon monoxide; powered only by the exterior daylight; that automatically opens by itself and sounds an alarm when a dangerous level of carbon monoxide is sensed to release the accumulated carbon monoxide and let the clean air with fresh oxygen enter the contaminated area to prevent or minimize poisoning and/or death of humans & animals without the need of any human physical action; the provided contacts can be connected to a private alarm station to alert the Fire & Police Departments to provide immediate assistance to the endangered humans & animals and protect the opened residence.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: February 21, 2012
    Inventor: Alfredo Mancini
  • Patent number: 8106784
    Abstract: A combination smoke and heat detector which allows, in spite of a simple structure, light emitted from an indication lamp to be visually confirmed from a wide range of directions. The combination smoke and heat detector (100) includes a body base (10), a printed circuit board (1), a thermosensitive element (2), a dark chamber (3), an indication lamp (4) mounted to the printed circuit board (1), a protective cover (30), and a bar-like light guide (5) for guiding light emitted from the indication lamp (4) to the outside of the protective cover (30). The light guide (5) passes through a light guide through-hole (35) formed in the protective cover (30) so as to be mounted therein, with one end surface thereof facing the indication lamp (4), and another end surface thereof protruding to the outside of the protective cover (30) by a height substantially equal to or larger than a protruding height of the dark chamber (3).
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: January 31, 2012
    Assignee: Nohmi Bosai Ltd.
    Inventors: Tomohiro Katou, Takashi Itou, Kenichi Katou
  • Patent number: 8106785
    Abstract: To enable an air velocity of sampling air to be precisely measured, a smoke detector (S) includes: a smoke detection part (22) connected to a sampling pipe (11); a fan (12) that sucks sampling air (SA) into the sampling pipe; and an air velocity sensor (15) that measures an air velocity of the sampling air within the sampling pipe. The air velocity sensor (15) is disposed at a primary side of the fan (12), and a straightening vane (25) is disposed between the air velocity sensor (15) and a suction port (12a) of the fan (12).
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: January 31, 2012
    Assignee: Nohmi Bosai Ltd.
    Inventor: Hiroyuki Yokota
  • Patent number: 8098166
    Abstract: An aspirated smoke detector includes a smoke sensor, an aspirator and variable speed control circuits. As the concentration of smoke increases, the speed control circuits can increase aspirator speed from a first, nominal value to a second, higher value.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: January 17, 2012
    Assignee: Honeywell International Inc.
    Inventor: Scott Lang
  • Patent number: 8089366
    Abstract: To enable an air velocity of sampling air to be precisely measured, a smoke detector (S) includes: a smoke detection part (22) connected to a sampling pipe (11); a fan (12) that sucks sampling air (SA) into the sampling pipe; and an air velocity sensor (15) that measures an air velocity of the sampling air within the sampling pipe. The air velocity sensor (15) is disposed at a primary side of the fan (12), and a straightening vane (25) is disposed between the air velocity sensor (15) and a suction port (12a) of the fan (12).
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: January 3, 2012
    Assignee: Nohmi Bosai Ltd.
    Inventor: Hiroyuki Yokota
  • Patent number: 8077018
    Abstract: To enable an air velocity of sampling air to be precisely measured, a smoke detector (S) includes: a smoke detection part (22) connected to a sampling pipe (11); a fan (12) that sucks sampling air (SA) into the sampling pipe; and an air velocity sensor (15) that measures an air velocity of the sampling air within the sampling pipe. The air velocity sensor (15) is disposed at a primary side of the fan (12), and a straightening vane (25) is disposed between the air velocity sensor (15) and a suction port (12a) of the fan (12).
    Type: Grant
    Filed: April 19, 2011
    Date of Patent: December 13, 2011
    Assignee: Nohmi Bosai Ltd.
    Inventor: Hiroyuki Yokota
  • Patent number: 8054189
    Abstract: When a rechargeable battery of a life safety device reaches its end of life, the life safety device provides an audible signal indicating that replacement is required. When the device is disconnected from line power, the rechargeable battery still contains a significant amount of energy. The device automatically begins controlled discharge the battery until the stored energy has been reduced to a safe level for disposal of the life safety device and its battery.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: November 8, 2011
    Assignee: Walter Kidde Portable Equipment Inc.
    Inventors: Travis Silver, Stan Burnette, Matthew J. Buchholz
  • Patent number: 7982628
    Abstract: A verbal language based output system includes data defining a geometrical region, such as a building, configuration data relative to various detectors in the region, and a plurality of event inputs associated with the detectors. Verbal language generation software, in response to the data and the event inputs, produces verbal descriptions of developing events. Such verbal descriptions can be audibly output for use by personnel needing to enter the region to address the events.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: July 19, 2011
    Assignee: Honeywell International Inc.
    Inventors: Thomas A. Plocher, Henry Chen
  • Patent number: 7973669
    Abstract: A sensor assembly includes a sensor configured to detect at least one material or condition, such as a smoke detector, fire detector, or carbon monoxide detector. The sensor assembly also includes a base configured to be mounted on a structure, such as a wall or ceiling, and to receive the sensor. The sensor assembly further includes a wireless module located between the sensor and the base. The wireless module is configured to transmit position information. The wireless module may include one or more electrical contacts used to form at least one electrical connection between the base of the sensor assembly and the sensor. The wireless module may also include a printed circuit board having the contacts, wireless radio circuitry, an antenna, and other components. The printed circuit board could be substantially hidden from view when the sensor is attached to the base and the base is mounted on the structure.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: July 5, 2011
    Assignee: Honeywell International Inc.
    Inventors: Hai D. Pham, Steve D. Huseth, Andrew G. Berezowski, Thomas J. Schubring, Edward J. Dauskurdas, Dan Hawkinson, Kalvin Watson, Edward J. Kurtz, David J. Wunderlin
  • Patent number: 7956764
    Abstract: An ambient condition detector outputs an alarm comprising a tonal pattern comprising at least two distinctly different pitch tones in one embodiment of the invention. Another embodiment comprises a detector whereby a user can select a pitch tone to be output within a tonal pattern alarm when the detector senses an ambient condition. Options include verbal output to indicate the type of ambient condition sensed and/or the location of the detector sensing the ambient condition.
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: June 7, 2011
    Inventor: Gary Jay Morris
  • Patent number: 7952486
    Abstract: A liquid crystal display device with a substrate and a gas detector. The substrate has a pixel array area and an electrical connection area. The pixel array area has a plurality of pixels. The electrical connection area has a plurality of bond pads positioned on the surface of the substrate to address the plurality of pixels in the pixel array area. The gas detector is positioned within the electrical connection area. The gas detector is arranged to detect the presence of a specified gas.
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: May 31, 2011
    Assignee: Chimei Innolux Corporation
    Inventor: Pavel Novoselov
  • Patent number: 7928853
    Abstract: An alarm unit, for sounding an alarm on detection of a fire emergency condition, which comprises a smoke detector, an alarm indicator and a heat detector wherein the smoke detector is capable of receiving power from a first power source and the heat detector is capable of receiving power from a second power source.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: April 19, 2011
    Inventor: Peter Frost-Gaskin
  • Patent number: 7821412
    Abstract: A smoke detector replaces the americium source of alpha particles with a field emission device using carbon nanotubes as the field emitters, or some other field emitter, in order to provide an ionization of the air potentially caring smoke particles through the smoke detector.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: October 26, 2010
    Assignee: Applied Nanotech Holdings, Inc.
    Inventor: Richard Lee Fink
  • Patent number: 7808393
    Abstract: In order to enable supply of a sampling air to a smoke detection portion at a stable flow velocity, the present invention provides a smoke detector including: a black box (21) including a smoke detection portion (25) having an inflow port and an outflow port; a sampling pipe (30) laid in a monitor space; a gas flow pipe (P) connected to the sampling pipe and which houses a fan (3) therein; a flow path branching portion (33) provided to the gas flow pipe on a secondary side of the fan and connected to the inflow port of the smoke detection portion; and a flow path merging portion (32) which is provided to the gas flow pipe on the secondary side of the fan and connected to the outflow port of the smoke detection portion, and at which a pressure of a fluid flowing through the gas flow pipe is lower than a fluid flowing through the gas flow pipe at the flow path branching portion.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: October 5, 2010
    Assignee: Nohmi Bosai Ltd.
    Inventor: Hiroyuki Yokota
  • Publication number: 20100238036
    Abstract: A smoke alarm comprises smoke detection circuitry for detecting smoke and generating a detection signal responsive thereto. Proximity detection circuitry generates a proximity detection signal responsive to detection of an object within in a selected distance of the smoke alarm. Alarm generation circuitry generates an audible alarm responsive to the detection signal. The audible alarm may be deactivated for a predetermined period of time responsive to at least one proximity detection signal.
    Type: Application
    Filed: March 19, 2010
    Publication date: September 23, 2010
    Applicant: SILICON LABORATORIES INC.
    Inventor: Wayne T. Holcombe