Emisense Technologies, LLC

Lawrence Livermore National Security, LLC

Innovate! Technology, Inc.

Other

Klaus Karl Allmendinger

James Steppan

Brett Tamatea Henderson

Anthoniraj Lourdhusamy

Robert Scott Glass

Gangqiang Wang

Joseph Jay Fitzpatrick

Leta Yar-Li Woo

Lee Sorensen

Joe Fitzpatrick

Gangquiang Wang

A pellet barbecue configured to recirculate exhaust gas, allowing for the reduction of oxygen in the cooking chamber. The pellet barbecue is configured with an exhaust gas recirculation system, and an angled bottom fire pot. The electric gas recirculation fan pulls gases from a gas recirculation channel, and blows it onto the angled bottom fire pot. The gas recirculation channel is equipped with a movable mixer flap to control how much of the gas pulled by the gas recirculation fan is exhaust gas or outside air. The pellet barbecue controller monitors the conditions in the cooking chamber, and controls the gas recirculation fan speed and positioning of the mixer flap to maintain a desired temperature, while optimizing the concentration of wood taste compounds from the pellets in the cooking chamber.

Pellet barbecue with exhaust gas recirculation

A sensor includes an electrode and a seed structure. The electrode is configured to measure current due to movement of particulate matter relative to the electrode. The seed structure is deposited on the electrode. The seed structure includes a plurality of elongated members extending outward from the surface of the electrode. The elongated members are configured to promote charge transfer to particles and/or agglomerates of the particulate matter during operation of the sensor.

Agglomeration and charge loss sensor with seed structure for measuring particulate matter

A device for signal processing. The device includes a signal generator, a signal detector, and a processor. The signal generator generates an original waveform. The signal detector detects an affected waveform. The processor is coupled to the signal detector. The processor receives the affected waveform from the signal detector. The processor also compares at least one portion of the affected waveform with the original waveform. The processor also determines a difference between the affected waveform and the original waveform. The processor also determines a value corresponding to a unique portion of the determined difference between the original and affected waveforms. The processor also outputs the determined value.

Electrochemical sensing using comparison of voltage-current time differential values during waveform generation and detection

A method for analysis of a gas stream. The method includes identifying an affected region of an affected waveform signal corresponding to at least one characteristic of the gas stream. The method also includes calculating a voltage-current time differential between the affected region of the affected waveform signal and a corresponding region of an original waveform signal. The affected region and the corresponding region of the waveform signals have a sensitivity specific to the at least one characteristic of the gas stream. The method also includes generating a value for the at least one characteristic of the gas stream based on the calculated voltage-current time differential.

Gas stream analysis using voltage-current time differential operation of electrochemical sensors

A method for temperature analysis of a gas stream. The method includes identifying a temperature parameter of an affected waveform signal. The method also includes calculating a change in the temperature parameter by comparing the affected waveform signal with an original waveform signal. The method also includes generating a value from the calculated change which corresponds to the temperature of the gas stream.

Temperature analysis with voltage-current time differential operation of electrochemical sensors

Electrochemical sensing using voltage-current time differential

A sensor assembly includes a voltage source, a sensor electrode, a grounded assembly, an integration capacitor, and a current meter. The sensor electrode is coupled to the voltage source to receive a voltage. The sensor electrode is disposed within a directed and controlled exhaust flow to facilitate particle agglomeration into particulate matter structures at a surface of the sensor electrode. The grounded assembly is coupled to a ground reference and disposed at a distance from the sensor electrode. The integration capacitor is coupled to a negative side of the voltage source to integrate in time current pulses from charge transfers from the sensor electrode of the particulate matter structures. The current meter is coupled to the voltage source to measure an integrated value of current supplied to the voltage source in response to charge transfers from the sensor electrode to the particulate matter structures in the exhaust flow.

Agglomeration and charge loss sensor for measuring particulate matter

A sensor includes a housing, a central sensor electrode assembly, an insulating member, and a trace. The central sensor electrode assembly is coupled to a supply side of a voltage source. The insulating member is coupled between the housing and the central sensor electrode assembly. The insulating member circumscribes a section of the central sensor electrode assembly. The trace is coupled to the insulating member and circumscribes the section of the central sensor electrode assembly. The trace directs at least a portion of leakage current away from a voltage ground offset on an opposite side of the central sensor electrode assembly.

A primary pump current is directed through a primary electrochemical cell system between first and second constant primary pump currents to direct a first ion flow into and out from a shared measuring chamber. A first output signal generated by the primary electrochemical cell system in accordance with a first ion concentration within the shared measuring chamber is detected. A second output signal generated by a secondary electrochemical cell system in accordance with a second ion concentration within the shared measuring chamber is also detected. Based on a relationship between the first and second output signals, a secondary pump current is directed through the secondary electrochemical cell system between first and second constant secondary pump currents to direct a second ion flow into and out from the shared measuring chamber.

System, apparatus, and method for measuring an ion concentration of a measured fluid

An apparatus, system and method maximizes efficiency and accuracy of measuring an ion concentration of a measured fluid by varying a flow of ions within a measuring cell in accordance with an output signal of a sensor cell. The pump current through a pump cell is switched between a constant positive current and a constant negative current when upper and lower thresholds of the output signal are reached. The pulse width ratio of the square wave produced by the varying current is compared to a pulse width ratio function derived from a calibration procedure to determine the ion concentration of the measured fluid. In one embodiment, the functions of the pump cell and sensing cell are performed by a single electrochemical cell.

A programmable vehicle gauge generates and presents display information in accordance with a user modifiable gauge processing configuration. In the exemplary embodiment, data from one or more digital sensor systems is extracted from a digital sensor signal in accordance with a user modifiable data extraction configuration, the extracted data is processed in accordance with a user modifiable display information generation configuration to generate the display information and a user modifiable presentation configuration defines how the display information is presented through an output device. In accordance with the user modifiable presentation configuration, a controller generates control signals to activate visual display devices in a particular format to present the display information generated from the extracted data.

Programmable vehicle gauge apparatus, system, and method

An apparatus, system and method maximizes efficiency and accuracy of measuring an oxygen concentration of a measured gas by varying a flow of oxygen ions within a measuring cell () in accordance with an output signal of an oxygen sensor cell (). The pump current () through a pump cell () is switched between a constant positive current and a constant negative current when upper and lower thresholds of the output signal are reached. The pulse width ratio of the square wave produced by the varying current is compared to a pulse width ratio function derived from a calibration procedure to determine the oxygen concentration of the measured gas.

System, apparatus, and method for measuring an oxygen concentration of a gas

An exhaust guide guides exhaust gases within an exhaust system to an intake portion of a sensor when an input port and an output port of the exhaust guide are positioned within an exhaust gas flow. A high pressure region formed at the input port and a low pressure region formed at the output port facilitate the flow of the gases through a chamber housing that at least houses the intake portion of the sensor. Contamination of the sampled gases by outside air is minimized. In some configurations, the sensor is mounted outside of the exhaust system to increase the thermal isolation between the sensor and the exhaust system improving the performance and increasing the useful life of the sensor.

Growing community of inventors

San Juan Capistrano, CA, United States of America

Klaus Karl Allmendinger