公开(公告)号：US20240345022A1

公开(公告)日：2024-10-17

申请号：US18750983

申请日：2024-06-21

Applicant: Honeywell International Inc.

Inventor： Ling LIU ,  Feng LIANG

IPC: G01N27/416 ,  G01N33/00

CPC classification number: G01N27/4163 ,  G01N33/0047

Abstract: Methods, apparatuses, and systems for calculating a compensated reading of a gas sensing apparatus are provided. An example method includes causing a first supply of a working voltage to a sensing circuitry of the gas sensing apparatus, determining a first output of the sensing circuitry, causing a second supply of a stimulate voltage to the sensing circuitry, determining a second output of the sensing circuitry, and calculating a compensated reading of the gas sensing apparatus based at least in part on the first output and the second output.

公开(公告)号：US12117415B2

公开(公告)日：2024-10-15

申请号：US16613584

申请日：2018-05-15

Applicant: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY

Inventor： Helen Berney ,  Alan O'Donnell ,  Thomas O'Dwyer ,  Alfonso Berduque

IPC: G01N27/333 ,  G01N27/414 ,  G01N27/416

CPC classification number: G01N27/333 ,  G01N27/414 ,  G01N27/4163

Abstract: An integrated ion-sensitive probe is provided. In an example, an ion-sensitive probe can include a semiconductor substrate and a first passive electrode attached to the semiconductor substrate. The first passive electrode can be configured to contact a solution and to provide a first electrical voltage as function of a concentration of an ion within the solution. In certain examples, a passive reference electrode can be co-located on the semiconductor substrate. In some examples, processing electronics can be integrated on the semiconductor substrate.

公开(公告)号：US20240310356A1

公开(公告)日：2024-09-19

申请号：US18672910

申请日：2024-05-23

Applicant: President and Fellows of Harvard College

Inventor： Ping Xie

IPC: G01N33/487 ,  B01L3/00 ,  C12Q1/6869 ,  G01N27/414 ,  G01N27/416 ,  G01N27/447

CPC classification number: G01N33/48721 ,  B01L3/502715 ,  B01L3/50273 ,  C12Q1/6869 ,  G01N27/4145 ,  G01N27/4146 ,  G01N27/4163 ,  G01N27/44726 ,  G01N27/4473 ,  G01N27/44791 ,  B01L2300/0645 ,  B01L2300/0867 ,  B01L2300/0896 ,  B01L2300/12 ,  B01L2400/0421

Abstract: A nanopore sensor includes a nanopore disposed in a support structure with a nanopore diameter and having a nanopore fluidic resistance, RPore. A fluidic passage, is disposed in fluidic connection between a first fluidic reservoir of ionic concentration solution and the nanopore, and includes a passage length having a fluidic passage width, along at least a portion of a fluidic passage length, that is greater than the diameter of the nanopore and less than the fluidic passage length. The fluidic passage has a fluidic passage fluidic resistance, RFP, of at least about 10% of the nanopore fluidic resistance, RPore, and no more than about 10 times the nanopore fluidic resistance, RPore. The nanopore is disposed in fluidic connection between the fluidic passage and a second fluidic reservoir of ionic concentration solution. At least one transistor is operatively connected electrically to sense electrical potential local to the fluidic passage.

公开(公告)号：US20240310325A1

公开(公告)日：2024-09-19

申请号：US18668450

申请日：2024-05-20

Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

Inventor： Moez KANOUN

IPC: G01N27/417 ,  G01N27/416 ,  H03F3/347

CPC classification number: G01N27/4175 ,  G01N27/4163 ,  H03F3/347 ,  H03F2200/129 ,  H03F2200/375

Abstract: A rail-to-rail potentiostat may require an offset current in order to support a bidirectional work electrode current at a work electrode. This offset current may improve measurements of the work electrode current made a dual-slope analog-to-digital converter, especially when the work electrode current is small, but can also lead to inaccuracies (e.g., due to a temperature coefficient) if it is not properly calibrated. Accordingly, bidirectional potentiostat is disclosed that can be configured in a normal configuration for measurement of a work electrode current or a calibration configuration for measurement (i.e., calibration) of an offset current. The reconfigurability allows calibrations to be taken as needed, on a schedule, or as specified by a user. The reconfigurability can also allow for maintaining a work electrode voltage and a work electrode current during calibration so that an electrochemical experiment using a cell coupled to the bidirectional potentiostat is unaffected by the calibration.

公开(公告)号：US20240210348A1

公开(公告)日：2024-06-27

申请号：US18288436

申请日：2022-03-11

Applicant: I-SENS, INC.

Inventor： Su Jin KIM ,  Jeong Yeon CHOI ,  In Seok JEONG ,  Young Jea KANG

IPC: G01N27/30 ,  G01N27/416

CPC classification number: G01N27/301 ,  G01N27/4163

Abstract: An apparatus for correcting a reference potential according to an aspect includes a current-voltage graph obtaining unit configured to apply a voltage to both ends of each of an operating electrode and a reference electrode of an electrochemical sensor at a first time point and a second time point to obtain a first voltage-current graph and a second voltage-current graph and a potential correction unit configured to determine a degree of change in the reference potential of the reference electrode based on the first voltage-current graph and the second voltage-current graph.

公开(公告)号：US12007357B2

公开(公告)日：2024-06-11

申请号：US17938157

申请日：2022-10-05

Applicant: Endress+Hauser Conducta GmbH+Co. KG

Inventor： Andreas Löbbert ,  Michael Hanko ,  Matthäus Speck

IPC: G01N27/416 ,  G01N27/333 ,  G01N27/36 ,  G01N27/40

CPC classification number: G01N27/4163 ,  G01N27/3335 ,  G01N27/40 ,  G01N27/4161 ,  G01N27/36

Abstract: The present disclosure relates to an electrochemical sensor for determining a measurand correlating with a concentration of an analyte in a measuring fluid, comprising: a sensor membrane designed to be in contact with the measuring fluid for detecting measured values of the measurand; a probe housing which has at least one immersion region designed for immersion into the measuring fluid, wherein the sensor membrane is arranged in the immersion region of the probe housing; and a measurement circuit which is at least partially contained in the probe housing and is designed to generate and output a measurement signal dependent on the measurand, wherein the sensor membrane contains an optically detectable substance for marking the sensor membrane.

公开(公告)号：US20240125734A1

公开(公告)日：2024-04-18

申请号：US18138230

申请日：2023-04-24

Applicant: SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS CO., LTD.

Inventor： Tao Shen ,  Huilin Shi ,  Jin Teng ,  Wenheng Guo

IPC: G01N27/416 ,  G01N15/12

CPC classification number: G01N27/4163 ,  G01N15/12 ,  G01N2015/137 ,  G01N2015/138

Abstract: The present disclosure provides a particle analyzer and a particle test control method and device thereof. A method comprises, acquiring a blood sample in a test location; preparing a diluted sample by the acquired sample; after acquiring a diluted sample, monitoring whether a pore blocking event occurs during a counting process; when the pore blocking event occurs, suspending the test of the sample, and performing an unblocking operation; and after the unblocking operation is completed, re-counting the same diluted sample without re-acquiring and re-diluting the blood sample by the impedance method after the unblocking operation.

公开(公告)号：US20240102960A1

公开(公告)日：2024-03-28

申请号：US17951777

申请日：2022-09-23

Applicant: Hach Company

Inventor： Vishnu Vardhanan Rajasekharan ,  Matthew Ryan Salzer ,  Russell Young ,  Benjamin James Walter ,  Jorge Gomez

IPC: G01N27/416 ,  G01N27/30

CPC classification number: G01N27/4163 ,  G01N27/308

Abstract: An embodiment provides a method for measuring an amount of total organic fluoride content of a PFAS containing sample, including: placing a sample comprising a PFAS compound in a measurement device, wherein the measurement device comprises an oxidation cell and a non-oxidation cell, wherein the oxidation cell comprises a boron-doped diamond electrode; measuring, using the measurement device, an amount of total inorganic fluoride of the sample before an oxidation; applying an electrical potential to a portion of the sample in the oxidation cell, wherein the electrical potential oxidizes the PFAS compound; measuring, using the measurement device, an amount of total organic fluoride of the sample after the oxidation to provide a measurement signal of the total organic fluoride; and determining a first derivative of the measurement signal of the total organic fluoride. Other aspects are described and claimed.

公开(公告)号：US20240060931A1

公开(公告)日：2024-02-22

申请号：US18271506

申请日：2021-10-12

Applicant: Hitachi High-Tech Corporation

Inventor： Airi IWASAWA ,  Emiko USHIKU ,  Miki FURUYA

IPC: G01N27/416 ,  G01N27/333

CPC classification number: G01N27/4163 ,  G01N27/333

Abstract: Provided are an electrolyte analysis device and a method for identifying an abnormality in the same that make it possible to detect an abnormality in an ion-selective electrode at an early stage. The electrolyte analysis device comprises an ion-selective electrode that generates a sample potential that is a potential corresponding to the ion concentration of a sample, a reference electrode that generates a reference potential that is a potential to serve as a reference, and a concentration calculation unit that calculates the ion concentration on the basis of the potential difference between the sample potential and the reference potential. The electrolyte analysis device is characterized by additionally comprising an abnormality determination unit for determining whether there is an abnormality on the basis of an evaluation value that has been calculated using a detergent potential that is a potential generated by the ion-selective electrode when a detergent was supplied.

公开(公告)号：US11841339B2

公开(公告)日：2023-12-12

申请号：US16755483

申请日：2018-10-11

Applicant: ANB Sensors Ltd

Inventor： Steven A. Gahlings ,  Nathan Lawrence ,  Kay Louise McGuinness

IPC: G01N27/30 ,  G01N27/403 ,  G01N27/333 ,  G01N27/36 ,  G01N27/416 ,  G01N27/48 ,  G01N33/18

CPC classification number: G01N27/301 ,  G01N27/302 ,  G01N27/308 ,  G01N27/333 ,  G01N27/36 ,  G01N27/4035 ,  G01N27/4163 ,  G01N27/4165 ,  G01N27/4167 ,  G01N27/48 ,  G01N33/18

Abstract: A voltammetric reference control system for generating a reference signal for an electrochemical sensor. The electrochemical sensor may comprise a voltammetric sensor, a potentiometric sensor, an amperometric sensor, an ion selective sensor and/or the like that is designed to be used in solutions, such as water, seawater, saline solutions and/or the like. The voltammetric reference control system generates a reference potential that does not drift and/or does not require calibration during operation of the electrochemical sensor.