| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 073280020 | Particle charging | 13 |
| 20090078024 | PARTICLE DETECTOR - A particle detector ( | 03-26-2009 |
| 20100043527 | ULTRA FINE PARTICLE SENSOR - The invention relates to an ultra fine particle sensor ( | 02-25-2010 |
| 20100229632 | PARTICULATE MATTER DETECTION DEVICE - A particulate matter detection device ( | 09-16-2010 |
| 20110030451 | METHOD AND DEVICE FOR THE SELF-DIAGNOSIS OF A PARTICLE SENSOR - The invention relates to a method for the self-diagnosis of a particle sensor used for determining a particle content in a gaseous stream, wherein the particle sensor includes on its surface at least two interlocking, interdigital electrodes and a heating element separated from said electrodes by an insulation layer. Said particle sensor can be heated by said heating element in a regeneration phase, and a soot concentration can thereby be removed from the same. Provision is made according to the invention for a semiconductive layer to be formed in the insulation layer directly beneath the electrodes by means of external doping or auto-doping and in order to perform the self-diagnosis for a measurement voltage to be applied at least periodically between the electrodes and a self-diagnostic current to be measured. The invention furthermore relates to a device for the self-diagnosis of a corresponding particle sensor, said particle sensor being connected to an engine management system or a sensor control unit and said engine management system or said sensor control unit including apparatuses for diagnosing the soot concentration on the particle sensor and the particle sensor itself. Said engine management system or said sensor control unit includes according to the invention apparatuses for evaluating a self-diagnostic current when applying an AC or DC voltage as a measurement voltage to the electrodes. When using DC voltage as the measurement voltage, the particle sensor can furthermore be heated for a short time to temperatures >500 EC via said engine management system or said sensor control unit in order to perform the self-diagnosis. A self-diagnosis of the electrodes, which are provided for the particle measurement, can be carried out as a pre-delivery inspection by the manufacturer as well as in subsequent use with the presented diagnostic method and the corresponding device for carrying out this method. A preferred application of the method provides for its use within the scope of the on-board diagnosis of diesel internal combustion engines. | 02-10-2011 |
| 20110072887 | METHOD FOR DETECTING A CHEMICAL SUBSTANCE - The present invention provides a method for detecting easily and efficiently a chemical substance contained in a gas sample at an ultralow amount. | 03-31-2011 |
| 20110197656 | DEVICE FOR CHARACTERIZING THE EVOLUTION OVER TIME OF A SIZE DISTRIBUTION OF ELECTRICALLY-CHARGED AIRBORNE PARTICLES IN AN AIRFLOW - A device is presented that is capable of recording the evolution over time of the characteristics of a size distribution of electrically-charged airborne particles in an airflow. The device comprises an air inlet, a particle charging unit, a concentration variation section, a particle sensing section and a data evaluation unit. Specifically, the particle sensing section of the device generates at least two serially obtained measurement signals I | 08-18-2011 |
| 20120055233 | PARTICULATE MATTER DETECTION DEVICE - A particulate matter detection device includes a plate-like element base material including, on one surface thereof, a formed recess portion to collect a particulate matter; a pair of measurement electrodes arranged on the bottom surface side of the recess portion of the element base material; and a high-voltage dust collection electrode embedded in a wall which forms the recess portion of the element base material on the one surface side of the element base material from a position where the pair of measurement electrodes are arranged. An electric field is generated from the high-voltage dust collection electrode to the pair of measurement electrodes, to collect, on the bottom surface side of the recess portion, the particulate matter flowing along the element base material, and a change of electric characteristics between the pair of measurement electrodes is measured to detect the particulate matter collected on the recess portion. | 03-08-2012 |
| 20140069169 | Apparatus for Monitoring Particles in an Aerosol - The present invention relates to an apparatus ( | 03-13-2014 |
| 20140083167 | PARTICLE SAMPLING AND MEASUREMENT IN THE AMBIENT AIR - An apparatus and method for sampling and measuring air born particulate matter includes an inlet for the particulate containing gas to enter. A mechanism then removes coarse particles larger than a selected size while permitting filtered particles of less than the selected size to pass through. A chamber containing a quartz crystal sensor permits the filtered particles that have passed through to deposit to create an output signal in response to the deposited particle mass. | 03-27-2014 |
| 20140157872 | SENSING SYSTEMS - This invention relates to volcanic ash sensing techniques for aircraft, and to related sensing apparatus and methods. We thus describe a volcanic ash sensor for an aircraft, the sensor comprising: an electrically conducting ash charge collection device; an electrically insulating support for mounting said collection device in an air duct; and a charge measurement system having an input electrically coupled to said ash charge collection device; wherein said electrically conducting ash charge collection device is configured such that an air flow over said ash charge collection device is a turbulent flow; and wherein said charge measurement system is configured to determine a level of charge in said ash charge collection device to determine the presence of volcanic ash in said air flow. | 06-12-2014 |
| 20150020576 | PARTICULATE MATTER SENSOR UNIT - A particulate matter sensor unit may include a sensor portion of an electrostatic induction type that may be reacted when a particulate matter having electric charge may be passing the vicinity thereof, a protection pad that the sensor portion may be bonded on one side thereof through a conductive paste, an heater electrode that may be formed on the protection pad and burns the particulate matters that may be disposed on the sensor portion to eliminate them, and a sensor electrode that may be formed on the protection pad to transfer a signal that may be generated by the sensor portion to an outside. | 01-22-2015 |
| 20150068282 | Portable Ultrafine Particle Sizer (PUPS) Apparatus - The Portable Ultrafine Particle Sizer (PUPS) invention is provided. The PUPS is an instrument which can measure particle number concentration for particle sizes under 200 nanometers in-situ. The PUPS is a compact design for quick mounting on vehicles. Size discrimination is accomplished using a compact reverse Differential Mobility Analyzer (rDMA). Particle charging is accomplished using corona ionization. Concentration measurements are completed using a unique flexible printed circuit board electrode which can be removed for cleaning, disposal or chemical analysis of collected particles at the end of its in situ measurement life. | 03-12-2015 |
| 20190145332 | PARTICULATE MATTER SENSOR HEAT COVER | 05-16-2019 |
