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公开(公告)号：US20240288393A1
公开(公告)日：2024-08-29
申请号：US18583436
申请日：2024-02-21
申请人： Robert Bosch GmbH
发明人： Christoph Schelling , Richard Fix , Susanne Eicker
CPC分类号： G01N27/124 , G01N27/14 , G01N27/125
摘要： A method for operating a semiconductor gas sensor. The semiconductor gas sensor has a sensor element with a sensor material having a semiconductor, a plurality of measuring electrodes electrically connected to the sensor material for exciting and reading the sensor material, and a control and evaluation device for generating excitation signals and evaluating read measurement signals. A surface of the sensor material is exposed to a gaseous medium. In the method, a first excitation signal and a second excitation signal are applied to the sensor material. The excitation signals have different excitation frequencies. A first measurement signal is read based on the first excitation signal, and a second measurement signal is read based on the second excitation signal. A sensor signal is ascertained based on the excitation signals and the measurement signals.
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公开(公告)号：US11573193B2
公开(公告)日：2023-02-07
申请号：US16595471
申请日：2019-10-08
发明人： Jie-Chun Luo
IPC分类号： G01N27/14 , G01N27/04 , G01N27/407
摘要： A resistance-integrated gas sensor is provided, including a substrate, a first metal oxide layer, an insulating layer, a contact metal layer, a contact hole, a second metal oxide layer, and an interdigitated electrode layer. The first metal oxide layer is disposed in the substrate. The insulating layer is disposed on the substrate and the first metal oxide layer. The contact metal layer and the contact hole are disposed in the insulating layer. The second metal oxide layer is disposed on the insulating layer. A portion of the interdigitated electrode layer is disposed on the insulating layer, and another portion is disposed in the second metal oxide layer. The contact metal layer and the contact hole connect the first metal oxide layer and the interdigitated electrode layer.
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公开(公告)号：US11487128B2
公开(公告)日：2022-11-01
申请号：US16493035
申请日：2017-03-16
申请人： FASTREE3D SA
发明人： Stefan Thomas Keller
摘要： The invention relates to a remote sensing device comprising a detector with a predefined field of view (FOV); and an emitter emitting pulses of light with an overall divergence angle θdiv in the retinal hazard region which further comprises at least one diffuser wherein the divergence angle after the diffuser is θ0; and at least one lens configured to transform the light from said diffuser to a determined divergence angle matching the FOV of the detector, or to a virtual image of predefined size appropriate in magnitude given the divergence in order to ensure the most restrictive position regarding eye-safety to be at the same position for pulsed and (quasi-)continuous wave operation; and to emit the transformed light. The invention further discloses a smartphone comprising such a remote sensing device characterized by its improved eye-safety properties for myopic people.
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公开(公告)号：US11486846B2
公开(公告)日：2022-11-01
申请号：US16643706
申请日：2018-08-20
申请人： Robert Bosch GmbH
摘要： A method for analyzing a gas, where a sensitive metal oxide-containing layer is exposed to the gas, includes: reducing the temperature of the sensitive layer from a first temperature to a second temperature, the temperature of the sensitive layer being maintained essentially at the second temperature for a predetermined time period; increasing the temperature of the sensitive layer to a third temperature; measuring at least one electrical resistance value of the sensitive layer while the sensitive layer exhibits essentially the third temperature; and analyzing components of the gas based on the measured at least one electrical resistance value.
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公开(公告)号：US20220244229A1
公开(公告)日：2022-08-04
申请号：US17659980
申请日：2022-04-20
申请人： PGR Holdings, LLC
发明人： Peter P. RICCI , Otto J. GREGORY
摘要： Ultrasensitive, decoupled thermodynamic sensing platforms for the molecular-level detection of target analytes are disclosed, wherein the sensors have a heating resistor decoupled from a sensing resistor. Embodiments of the decoupled sensor comprise a metallic microheater resistor on one side of substrate, and a sensor resistor coupled to a catalyst on the other side of the substrate. A sensor array may be provided including a plurality of sensors each having a different catalyst that, when exposed to an analyte, each experience an endothermic reaction, an exothermic reaction, or no reaction. A comparison of the reaction results to data comprising previously obtained reaction results may be used to determine the presence and the identity of the analyte. Advantageously, the decoupled sensors utilize less power and provide greater sensitivity than other-known systems, and may be used to detect and identify a single molecule of an analyte.
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公开(公告)号：US11385196B2
公开(公告)日：2022-07-12
申请号：US15695557
申请日：2017-09-05
申请人： Brewer Science Inc.
摘要： A process and electronic hardware and software system for rapidly heating and cooling an active sensing layer of a gas sensor is provided. A series of high-energy pulses is run through a CNT electrically-active layer, heating the layer to varying temperatures. The influence by various gases on the electrical conductivity of the layer can be used to identify gases (e.g., water vapor, alcohol, methane, O2, CO2, and CO). Advantageously, the same structure can also be used as a nanoheater, either within or outside the context of the gas sensor. The device can acquire a unique gas spectra in seconds, and thus accurately determine gas type and mixtures of gases based on a library of known spectra.
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公开(公告)号：US20220018804A1
公开(公告)日：2022-01-20
申请号：US17293604
申请日：2019-11-27
申请人： KOA CORPORATION
发明人： Tetsuro TANAKA
IPC分类号： G01N27/407 , G01N27/409 , G01N27/12 , G01N27/14
摘要： An oxygen sensor is provided in which an insulative coating using an exterior resin material made of insulative resin is applied to a self-heating oxygen sensor element made of a ceramic sintered body housed in a case, and in which waterproof cloths with air permeability are attached using resin adhesives so as to cover openings that connect to air holes on end parts of the case. This allows provision of a gas sensor for use both in air and in liquid having insulating property, waterproof property, and thermal safety.
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8.发明授权公开(公告)号：US11035700B2
公开(公告)日：2021-06-15
申请号：US14972709
申请日：2015-12-17
发明人： Miriam Dittrich , Erik Stender , Jürgen Osswald
摘要： A gas sensor 100 includes a housing 110 and with a measuring element 10. The measuring element 10 has a heating coil 20, which is coated with a catalytically active or inactive ceramic 30. The ceramic 30 contains a fibrous material. The fibrous material may be, for example, a glass fiber material.
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公开(公告)号：US10768134B2
公开(公告)日：2020-09-08
申请号：US16315950
申请日：2017-07-07
摘要： A device for determining the parameters of strip-type superconductors includes a generator, a generator frequency-setting element, an inductance coil connected to the generator, a receiver, a receiver frequency-setting element, and an inductance coil connected to the receiver. The generator and receiver frequency-setting elements are same type narrow-band elements. The pass bands of the generator and receiver frequency-setting elements coincide through at least half of the bandwidth of the frequency-setting element having a narrower band pass width. The generator and receiver inductance coils are arranged with a gap between the same, making it possible for a strip-type superconductor to be placed between the inductance coils. The device is provided with a temperature sensor comprising a thermistor in contact with the superconductor. The device enables highly accurate and reproducible measurement results.
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公开(公告)号：US10761040B2
公开(公告)日：2020-09-01
申请号：US15570039
申请日：2016-04-26
申请人： ROSNEFT OIL COMPANY
发明人： Evgeny Evgenievich Karpov , Alexey Pavlovich Karelin , Alexey Anatolievich Suchkov , Ilya Vladimirovich Roslyakov , Irina Valerievna Kolesnik , Kirill Sergeevich Napolskii
摘要： The invention relates to gas analysis and to combustible gas and vapour analyzers based on a thermocatalytic operating principle. The subject of the invention is a sensor the sensitive elements of which are manufactured by planar techniques that can be easily automated. The main distinguishing feature is that a working sensitive element and a reference sensitive element are colocated in a single micron-sized structural component (a microchip) on a common substrate made of porous anodic aluminium oxide. The design of the sensitive elements provides for film-wise heat transfer from heated parts of the working and reference sensitive elements. Measuring microheaters which heat the working and reference sensitive elements up to working temperatures and provide for differentially measuring an output signal in a measuring bridge circuit are spaced apart at opposite sides of the anodic aluminium oxide substrate and are disposed on arms projecting beyond the common substrate configuration. The sensitive elements are disposed in a reaction chamber having restricted diffusion access via a calibrated orifice, and the diameter of regular pores in the microchip substrate is increased to sizes that provide for a predominantly molecular diffusion mode in the pores (100 nm or more).
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