Class / Patent application number | Description | Number of patent applications / Date published |
205783500 | Using solid electrolyte | 26 |
20110210015 | SOLID ELECTROLYTE SENSOR ELEMENT HAVING A COMBUSTION GAS-SENSITIVE ANODE - A sensor element is provided for determining at least one physical property of a gas mixture in at least one gas chamber, which includes at least one component to be identified, especially oxygen, and at least one oxidizable component, especially a combustion gas. The sensor element has at least one first electrode, at least one second electrode, and at least one solid electrolyte connecting the at least one first electrode and the at least one second electrode. The at least one second electrode has a lower catalytic activity, particularly a lower electrocatalytic activity with respect to the at least one oxidizable component than the at least one first electrode. | 09-01-2011 |
20120145562 | ELECTRODE FOR SUPEROXIDE ANION AND SENSOR INCLUDING THE SAME - An electrode for superoxide anions which contains a conductive component and, superimposed on a surface thereof, a film resulting from electrolytic polymerization of a metal thiofurylporphyrin/axial ligand complex; and a sensor for measuring a superoxide anion concentration including the same. The electrode for superoxide anions can prevent poisoning by a catalyst poison such as hydrogen peroxide. Accordingly, in any of in vitro or in vivo environments, this electrode for superoxide anions enables detection of superoxide anion radicals without suffering any influence from a catalyst poison such as hydrogen peroxide. Moreover, quantitative assay of superoxide anions can be performed with this electrode for superoxide anion in combination with a counter electrode or a reference electrode. Thus, this electrode for superoxide anions can find wide applicability in various fields. | 06-14-2012 |
20140021068 | METHOD FOR ACCURATELY QUANTIFYING A CHEMICAL SUBSTANCE CONTAINED IN A SAMPLE SOLUTION AT A SIGNIFICANTLY LOW CONCENTRATION OF NOT MORE THAN 1X10-8M - Provided is a method for accurately quantifying a chemical substance contained in a sample solution at a significantly low concentration of not more than 1×10 | 01-23-2014 |
205784000 | Gaseous oxygen or oxygen containing compound | 23 |
20080210575 | OXYGEN SENSOR FOR DETECTING NOx CONTAINED IN ENGINE EXHAUST GAS AND METHOD OF EVALUATING THE RECEPTIVITY OF THE OXYGEN SENSOR TO NOx - In an oxygen sensor for installation in the exhaust gas system of a vehicle for detecting a concentration of NOx in exhaust gas downstream from a catalytic converter, in which the exhaust gas is passed through a protective layer to an electrode disposed at one side of a solid electrolyte in a sensor element of the oxygen sensor, the protective layer is formed with a combination of values of thickness and porosity which provide improved sensitivity in detecting low levels of NOx in the exhaust gas. | 09-04-2008 |
20110132775 | SENSOR CONTROL DEVICE AND SENSOR CONTROL METHOD - [Objective] An object is to provide a sensor control apparatus and a sensor-control-apparatus control method which can reduce variation in startup time among a plurality of times of execution of detection processing, in consideration of variation in output characteristic among a plurality of gas sensors. | 06-09-2011 |
20120006692 | SOLID ELECTROLYTE GAS SENSOR FOR MEASURING VARIOUS GAS SPECIES - In a sensor element for a solid electrolyte gas sensor, comprising a gas-tight pumping chamber, a heater, a first pumping electrode arranged in the pumping chamber, and an at least second pumping electrode, an autonomous pumping cell is arranged as a gas inflow restrictor instead of a diffusion barrier. The autonomous pumping cell comprises an outer and an inner autonomous pumping electrode which are contacted or short-circuited from outside by means of a trimmable resistor. | 01-12-2012 |
20120285838 | SOLID ELECTROLYTE SENSOR HAVING TWO PUMPING CELLS FOR MEASUREMENT OF NITROGEN OXIDES - A method for detecting a proportion of at least one gas species in a measurement gas space. A sensor element is used, having an oxygen reduction pumping cell for concentration of the gas species, a pumping cell connected downstream of the oxygen reduction pumping cell having pumping electrodes, and a gas-tight chamber. A pumping electrode may be exposed to gas from the measurement gas space which has been concentrated by the oxygen reduction pumping cell. A further pumping electrode is disposed in the gas-tight chamber. At least one measuring electrode is further disposed in the gas-tight chamber. The oxygen reduction pumping cell and the pumping cell are galvanically isolated. The method includes an initialization phase, and an accumulation phase. | 11-15-2012 |
20130264223 | Method and Apparatus for Measurement of the Oxygen content or the Oxygen Partial Pressure in a Measurement Gas - Method and apparatus for measurement of the oxygen partial pressure or the oxygen content in a measurement gas in at least one measurement cycle using a solid electrolyte cell having at least one oxygen-conducting solid electrolyte, and having at least one reference electrode as well as at least one measurement electrode, wherein the at least one measurement electrode is in communication with the measurement gas and the at least one reference electrode is in communication with a reference gas or reference volume separated from the measurement gas, wherein a current is imposed via the electrodes on the solid electrolyte cell for pump operation and a measurement voltage (U | 10-10-2013 |
20140014535 | SENSOR CONTROL DEVICE, SENSOR CONTROL METHOD AND COMPUTER READABLE RECORDING MEDIUM - In a sensor control device, it is determined whether a gas sensor is activated. A concentration control is performed at an elapse timing which elapses by a first constant time from an activation timing at which the gas sensor is determined to be activated. A preliminary control is performed in at least a partial period between the elapse timing and a start timing at which a drive control is started. | 01-16-2014 |
20140251834 | GAS SENSOR - A membrane electrode assembly for a gas sensor is described that includes a membrane disposed between a sensing electrode and a counter electrode. The membrane is a polymer membrane, such as an ionomer, having an ionic liquid retained therein. | 09-11-2014 |
20140262834 | Microelectrochemical Sensor and Method for Operating a Microelectrochemical Sensor - A microelectrochemical sensor includes a carrier material composed of a semiconductor substrate, and includes a chemosensitive sensor element. The chemosensitive sensor element is positioned in a first partial region of the carrier material. A heating element is positioned in a region of the chemosensitive sensor element and is configured to regulate a temperature of the chemosensitive sensor element. A microelectronic unit is positioned in a second partial region of the carrier material, and is connected to the chemosensitive sensor element and the heating element via conductor tracks integrated into the carrier material. The microelectronic unit is configured to operate the heating element and the sensor element. | 09-18-2014 |
20140353174 | SOx GAS SENSOR AND METHOD OF MEASURING CONCENTRATION OF SOx GAS | 12-04-2014 |
20150041335 | System and Method for Fuel Cell Based Compositional Sample Analysis - A system and method for compositional sample analysis includes a fluid sample handler having a sample pathway extending in a downstream direction from an input port to an output port, to transport a fluid sample therethrough. A sample conditioner is disposed within the sample pathway, to maintain the fluid sample within a predetermined temperature range. A fuel cell is disposed in serial fluid communication with said output port to receive the fluid sample, the fuel cell configured to use an oxidizer and the fluid sample to generate an electric potential corresponding to a concentration of a constituent of the fluid sample. A controller is communicably coupled to the fuel cell, and configured to capture and use the electric potential to calculate the concentration of the constituent. | 02-12-2015 |
20150377822 | GAS SENSOR CONTROLLER, GAS SENSOR SYSTEM, AND DETERIORATION DETERMINATION METHOD FOR GAS SENSOR ELEMENT - A gas sensor controller ( | 12-31-2015 |
20160091458 | OXYGEN SENSOR WITH ELECTROCHEMICAL PROTECTION MODE - A process analytic instrument includes a measurement cell and an analyzer circuit. The measurement cell includes a solid state electrochemical oxygen sensor configured for exposure to a process gas. The analyzer circuit is coupled to the solid state electrochemical sensor to measure an electrical parameter of the solid state electrochemical sensor and provide an output indicative of oxygen in the process gas. A DC bias circuit is configured to selectably bias the solid state electrochemical oxygen sensor with a direct current when the solid state electrochemical sensor is in a reducing environment. | 03-31-2016 |
205784500 | In combustible gas (e.g., air/fuel mixture for internal combustion engine, etc.) | 8 |
20090057163 | Measuring Apparatus For Monitoring Residual Oxygen In An Exhaust Gas - A lambda probe ( | 03-05-2009 |
20100126883 | SENSOR ELEMENT HAVING SUPPRESSED RICH GAS REACTION - A sensor element for determining at least one physical property of a gas mixture is provided. The sensor element has at least one first electrode and at least one second electrode, and at least one solid electrolyte that connects the at least two electrodes. The at least one first electrode is connected via at least one diffusion-resistance element to the at least one gas chamber and/or to at least one reference chamber. The at least one second electrode is connected via at least one flow-resistance element to the at least one gas chamber. The at least one flow-resistance element and the at least one diffusion-resistance element are designed in such a way that the limit current of the at least one first electrode is smaller than the limit current of the at least one second electrode. | 05-27-2010 |
20110186446 | Method for Producing a Subminiature "Micro-Chip" Oxygen Sensor for Control of Internal Combustion Engines or Other Combustion Processes, Oxygen Sensor and an Exhaust Safety Switch - A method of making a sub-miniature “micro-chip” oxygen sensor is provided where multiple sensor elements are applied to a dielectric ceramic substrate consisting of a heater pattern, followed by a dielectric layer. Intermeshing electrodes are then applied either over the heater pattern/dielectric layers or on the opposite side of the substrate. The space between the intermeshing electrodes is filled with an n-type or p-type high temperature semiconductor which is covered by a porous protection layer. After singulation (dicing), the sensor element is assembled having conductors applied to the contact pads on the element and is packaged in an assembly for introduction to the exhaust stream of a combustion process. A large step-wise change in the resistance of the element takes place as a result of changes in oxygen content in the exhaust whereby one can determine if the exhaust is rich or lean for use in an engine management or combustion management systems for emissions control. A circuit is proposed to convert the change in resistance to a voltage signal to be used for control algorithms in engine or combustion control. Utilizing multiple units of the device for individual cylinder control of multi-cylinder engines is described. A method of using one embodiment of the invention for use as a safety switch is also revealed. | 08-04-2011 |
20130092559 | STEP-CHANGE SENSOR FOR PUMPED AND UNPUMPED OPERATION - A sensor device for sensing at least a proportion of at least one gas component of a gas in a measurement gas space, in particular for detecting oxygen in an exhaust gas of a combustion machine, is proposed. The sensor device includes at least one sensor element. The sensor element includes at least one first electrode and at least one first reference electrode and at least one second reference electrode. The second reference electrode is connected to at least one reference gas channel. The first electrode is connected to the first reference electrode and the second reference electrode by at least one respective solid electrolyte. The sensor element has at least one diffusion element between the first reference electrode and the reference gas channel. | 04-18-2013 |
20140367276 | Method and Apparatus for Operating a Linear Lambda Probe - A signal from a linear lambda probe, which signal is meant to represent an air/fuel ratio for the gas flowing in the exhaust section, specifically prior to combustion of said gas, is determined based on a pump current. A difference signal is formed based on a difference between a pump voltage signal and a Nernst voltage signal. An offset error in the measured signal is determined based on the difference signal for an approximately stoichiometrically prescribed raw setpoint value for the air/fuel ratio, with a setpoint value for the air/fuel ratio being determined based on the raw setpoint value and a forced excitation signal. | 12-18-2014 |
20150346056 | Method and Device for the Operation of a Binary Lambda Sensor Arranged in an Exhaust Gas Tract of an Internal Combustion Engine - A binary lambda sensor has a first electrode arranged on the exhaust gas side, a second electrode arranged contiguous to a reference air volume, and a power source arranged between the first and second electrode. A potential difference between the first and second electrodes forms a measurement signal of the sensor. In a measurement operation of the sensor, the power source is operated in a measurement operating state and provides the measurement signal. To adjust a specified oxygen concentration in the reference air volume, the power source is operated in a regeneration operating state. If a specified condition is fulfilled and the engine is operating in a coasting mode, the power source is operated in the measurement operating state, and a power source adjustment signal is determined for the regeneration operating state based on the measurement signal, for the adjustment of the specified oxygen concentration in the reference air volume. | 12-03-2015 |
20160103095 | COMPENSATING OXYGEN SENSOR AGING - Various methods are provided for compensating changes in the relation between impedance setpoint and operating temperature in an oxygen sensor. In one embodiment, a method of operating an oxygen sensor comprises adjusting an impedance setpoint based on a change in dry air pumping current of the oxygen sensor. | 04-14-2016 |
20160139073 | OXYGEN SENSOR CONTROL BASED ON WATER CONTACT - Various methods for operating an oxygen sensor are provided. In one example, a method of operating an oxygen sensor comprises applying power to a heater of the oxygen sensor, and indicating whether water is in contact with the oxygen sensor based on a time rate of change of a temperature of the oxygen sensor. | 05-19-2016 |
205785000 | With heating or temperature sensing | 3 |
20080217187 | Oxygen Partial Pressure Control Apparatuses and Methods of Using Solid Electrolytes for Oxygen Partial Pressure Control - The present invention provides oxygen partial pressure control apparatuses that can control the partial pressure of oxygen in atmospheric gases in processing apparatuses or the like to within the range of 0.2 to 10 | 09-11-2008 |
20100084287 | ANOMALY DIAGNOSING APPARATUS AND ANOMALY DIAGNOSING METHOD FOR GAS SENSOR - An anomaly diagnosing apparatus and method for a gas sensor which includes a heater control section; a measurement section which outputs a detection signal for detecting an internal resistance of the gas sensor through a solid electrolyte via connection terminals and the electrodes within the gas sensor and which measures the internal resistance of the gas sensor based on a response signal input via the connection terminals in response to the output of the detection signal; and a diagnosing section which heats the solid electrolyte by use of the heater control section, obtains, after the start of heating, a first time required to reach a first resistance and a second time required to reach a second resistance different from the first resistance, and determines whether or not the gas sensor is anomalous by comparing a predetermined threshold value and a ratio of the first to second times. | 04-08-2010 |
20140183060 | METHOD FOR DIAGNOSING AN ELECTRICAL LEAD TO AN ELECTRODE OF A SENSOR ELEMENT FOR SENSING AT LEAST ONE PROPERTY OF A MEASURED GAS IN A MEASURED GAS SPACE - A method for diagnosing an electrical lead to an electrode of a sensor element, for sensing at least one property of a measured gas in a measured gas space, in particular for sensing a proportion of a gas component in the measured gas or a temperature of the measured gas, is described. A measured signal indicating an internal resistance of a pump cell of the sensor element is investigated for regularity upon switching on of the control unit. Upon identification of at least one irregularity of the measured signal, a suspected fault in the lead is identified and at least one substitute action is taken. The substitute action is selected from: an application of control to the heating element which is provided for a fault situation, a check of the validity of the measured signal, and a monitoring of the heating element. A sensor apparatus is also described. | 07-03-2014 |