Class / Patent application number | Description | Number of patent applications / Date published |
356438000 | Exhaust, dust or smoke | 22 |
20080198382 | Method And Assembly For Determining Soot Particles In A Gas Stream - Method and assembly for determining the presence of soot particles in a gas stream such as in the air. To prevent the disturbing effect of salts and the like that may be deposited on soot particles, it is proposed to introduce the soot particles into water as a suspension. The salts concerned dissolve in the water and have no effect when determining the change in optical properties resulting from the presence of the soot particles. This determination comprises in particular a light transmittance measurement. The presence of the soot particles can be determined after the gas stream is first passed through a filter, as a result of which a particle size distribution can be determined. | 08-21-2008 |
20080304067 | Smoke detector - The invention relates to a smoke detector designed to be placed in a room subjected to ambient light, the detector comprising:
| 12-11-2008 |
20090128821 | SMOKE SENSOR AND ELECTRONIC EQUIPMENT - In a smoke sensor, a first light-receiving element which receives light from a light-emitting element and is disposed in a position where the quantity of received light changes according to a density of smoke and a second light-receiving element which monitors the quantity of light of the light-emitting element are arranged symmetrically with respect to the light-emitting element. Furthermore, a signal from the first light-receiving element and a signal from the second light-receiving element are amplified by an identical amplifier circuit. In a microcomputer, the density of smoke is computed based on a difference between an output obtained by amplifying an output of the first light-receiving element with the amplifier circuit and an output obtained by amplifying an output of the second light-receiving element with the amplifier circuit. | 05-21-2009 |
20090147261 | Beam Detector Distance Measurement - A projected beam smoke detector includes circuitry and control software to measure a distance a beam travels between the detector's transmitter and receiver. Either a time-based or a phase-based measurement methodology could be used. A sensitivity parameter of the detector could be set in response to the results of the measurement. | 06-11-2009 |
20090213381 | ANALYZER SYSTEM AND OPTICAL FILTERING - A gas analyzer system includes an optical source, an optical filter assembly, a controller, and an analyzer. The optical source generates an optical signal. The optical filter assembly includes different optical filters in which to filter the optical signal. During operation, the controller selects sequential application of each of the different optical filters in a path of the optical signal to modulate the optical signal using different frequency bands of optical energy. The modulated optical signal passes through an unknown sample. The optical analyzer analyzes the modulated optical signal after passing through the sample to detect which types of multiple different gases are present in the sample. | 08-27-2009 |
20100103425 | PHOTOACOUSTIC DETECTOR FOR MEASURING FINE DUST - The invention relates to a photoacoustic detector for measuring the concentration of fine dust particles, especially carbon particles in gas, comprising a pulsed light source for providing excitation light, wherein a size distribution of the fine dust particles can be determined by changing the pulse length and/or the pulse repetition rate. | 04-29-2010 |
20100225918 | PORTABLE DIESEL PARTICULATE MONITOR - A diesel particulate matter (DPM) monitor that can be worn, attached to a particular location or piece of equipment, and collects real-time data about DPM levels. In an exemplary embodiment, ambient air is drawn by a flow-controlled diaphragm pump through a particle size selector which only passes submicron particles. These particles are collected on an optically transparent filter. A laser illuminates the filter and the transmittance of the laser beam is measured in real-time by a photo detector. As DPM accumulates on the filter, the laser transmittance decreases. The instrument is calibrated to convert this decrease in transmittance to a real-time concentration of elemental carbon in the air. | 09-09-2010 |
20100265508 | Soot Number Determining Device and Method for Determining a Soot Number - 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. | 10-21-2010 |
20110170102 | Apparatus, System, and Method for Aftertreatment Control and Diagnostics - A method includes providing an exhaust stream for an internal combustion engine, where the exhaust stream is fluidly coupled to an aftertreatment component. The method includes optically determining an amount of an exhaust gas constituent in the exhaust stream. The method further includes modifying a model stored on a computer readable medium in response to the amount of the exhaust gas constituent. The model is an engine NO | 07-14-2011 |
20110255091 | ADAPTING A SCANNING POINT OF A SAMPLE AND HOLD CIRCUIT OF AN OPTICAL SMOKE DETECTOR - A smoke detector contains a radiation source for transmitting an illuminating radiation having a time sequence of radiation pulses, a radiation detector for receiving measurement radiation impinging on the radiation detector after at least partial scattering of the illuminating radiation, an amplifier circuit for amplifying an output signal of the radiation detector, an analog to digital converter having a sample and hold circuit for converting an analog output signal of the amplifier circuit into a digital measurement value, and a control device coupled to the radiation source and the sample and hold circuit. The control device is equipped for controlling the radiation source and the sample and hold circuit such that the time of a sampling point in time of the sample and hold circuit relative to a radiation pulse depends on the duration of the radiation pulse. A method for calibrating the described smoke detector is also revealed. | 10-20-2011 |
20110310391 | APPARATUS, SYSTEM, AND METHOD FOR DETECTING ENGINE FLUID CONSTITUENTS - 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. | 12-22-2011 |
20120013907 | ROBOT CLEANER, MAINTENANCE STATION, AND CLEANING SYSTEM HAVING THE SAME - In a cleaning system, dust stored in a dust box is suspended in air introduced into the dust box through a first opening formed through a robot cleaner, and is then discharged to a second opening formed through a maintenance station through the first opening of the robot cleaner. | 01-19-2012 |
20120033219 | PROBE FOR GAS ANALYSIS - 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. | 02-09-2012 |
20120062897 | ENHANCEMENT OF THE VISIBILITY OF OBJECTS LOCATED BELOW THE SURFACE OF A SCATTERING MEDIUM - Techniques are provided for enhancing the visibility of objects located below the surface of a scattering medium such as tissue, water and smoke. Examples of such an object include a vein located below the skin, a mine located below the surface of the sea and a human in a location covered by smoke. The enhancement of the image contrast of a subsurface structure is based on the utilization of structured illumination. In the specific application of this invention to image the veins in the arm or other part of the body, the issue of how to control the intensity of the image of a metal object (such as a needle) that must be inserted into the vein is also addressed. | 03-15-2012 |
20120120399 | DUCT DETECTOR - 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. | 05-17-2012 |
20130100451 | METHOD AND DEVICE FOR QUANTIFICATION OF GASES IN PLUMES BY REMOTE SENSING - 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. | 04-25-2013 |
20130208281 | SUCTION-TYPE SMOKE SENSING SYSTEM - 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. | 08-15-2013 |
20140160479 | METHOD AND DEVICE FOR REMOTE SENSING OF AMOUNT OF INGREDIENTS AND TEMPERATURE OF GASES - 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. | 06-12-2014 |
20140268158 | SYSTEM AND METHOD TO MEASURE 3D FLOW CHARACTERISTICS OF A GAS - 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. | 09-18-2014 |
356439000 | Contained | 3 |
20100259757 | SENSOR HEAD FOR A DRY POWDER AGENT - A sensor head for a dry powder agent according to an exemplary aspect of the present disclosure includes a housing defined along an axis along which light is communicated, the housing defines a multiple of apertures transverse to the axis and in communication with a measurement volume along the axis. Each of the multiple of apertures defines a longitudinal length along the axis which is less than a lateral length defined around the axis. A minor is within the housing to reflect the light through the measurement volume. | 10-14-2010 |
20140002823 | GAS ANALYSIS DEVICE | 01-02-2014 |
20150346093 | ON-BOARD DIESEL EMISSIONS DIAGNOSTIC AND MONITORING SYSTEM - In an apparatus and system for monitoring and communicating emissions data for a diesel engine, an exhaust gas analyzer uses laser light passed through a diffuser to measure the quantity of trace gases and particulates in an exhaust gas outlet from a diesel engine. The analysis chamber possesses superhydrophobic, superhydrophilic, and/or superoleophobic properties to reduce VOC-occlusion of the transparent chamber walls. A radio transmitter, cellular data transmitter, or Smartphone transmits measurement data. In a diagnostic and monitoring system for a diesel engine, the exhaust gas analyzer is in contact with the exhaust gases from the diesel engine, preferably in the tailpipe. A data receiver receives the transmitted measurement data. | 12-03-2015 |