公开(公告)号：US20240302445A1

公开(公告)日：2024-09-12

申请号：US18595294

申请日：2024-03-04

Applicant: Analog Devices, Inc.

Inventor： Brian Harrington ,  Sheila Patricia Seidel ,  Leah Alexis Garber ,  Sue Zheng ,  Kate Danielle Fischl ,  Atulya Yellepeddi

IPC: G01R31/389 ,  G01R31/367 ,  G01R31/3842 ,  G01R31/396

CPC classification number: G01R31/389 ,  G01R31/367 ,  G01R31/3842 ,  G01R31/396

Abstract: A method for selecting one or more gain values in an electrochemical impedance spectroscopy (EIS) current measurement system to provide an improved signal-to-noise characteristic can include selecting a larger one of an electrochemical cell arrangement impedance indication value and a sense resistor arrangement impedance indication value and using the selected impedance indication value as a determined impedance indication value. The method can also include determining, for a plurality of gain setting combinations, an EIS excitation current value at which current measurement circuitry of the current measurement system will reach a specified amount of a non-saturation range of the current measurement system when measuring the determined impedance indication value. The method can also include determining, for the plurality of gain setting combinations, a signal-to-noise characteristic at the determined EIS excitation current based upon a determined noise level in at least one part of the EIS current measurement system.

公开(公告)号：US12073048B2

公开(公告)日：2024-08-27

申请号：US17693644

申请日：2022-03-14

Applicant: Analog Devices, Inc.

Inventor： Atulya Yellepeddi ,  Harshvardhan Bhatia ,  Jiayi Jiang ,  Reuben Harry Cohn-Gordon ,  Johannes Traa ,  Sai Kulkarni

IPC: G06F3/044

CPC classification number: G06F3/0443 ,  G06F2203/04101 ,  G06F2203/04104

Abstract: A device for proximity detection includes multiple electrodes and an impedance sensor coupled to the electrodes. The impedance sensor may include three impedance elements and a sensing element arranged in a bridge configuration to offset an external impedance and detect changes to impedance in the environment of the device. The device further includes a proximity detector that obtains sensor measurements between multiple subsets of electrodes and analyzes the sensor measurements to determine whether an object is approaching the device.

公开(公告)号：US10451713B2

公开(公告)日：2019-10-22

申请号：US15705141

申请日：2017-09-14

Applicant: Analog Devices, Inc.

Inventor： Sefa Demirtas ,  Tao Yu ,  Atulya Yellepeddi ,  Nicolas Le Dortz ,  Charles Mathy

IPC: G06K9/00 ,  G01S7/486 ,  H04N5/247 ,  H04N5/33 ,  G01S17/89 ,  G01S17/10 ,  H04N5/235 ,  H04N13/254 ,  H04N13/271 ,  H04N13/282 ,  G01S7/481 ,  G01S7/487 ,  H04N5/225 ,  H04N5/232

Abstract: Aspects of the embodiments are directed to methods and imaging systems. The imaging systems can be configured to sense, by an light sensor of the imaging system, light received during a time period, process the light received by the light sensor, identify an available measurement period for the imaging system within the time period based on the processed light, and transmit and receive light during a corresponding measurement period in one or more subsequent time periods.

公开(公告)号：US20250146153A1

公开(公告)日：2025-05-08

申请号：US18387380

申请日：2023-11-06

Applicant: ANALOG DEVICES, INC.

Inventor： Radhika Marathe ,  Atulya Yellepeddi

IPC: C25B15/023 ,  C25B9/70

Abstract: Described herein are electrochemical impedance spectroscopy (EIS) systems and methods that facilitate the allocation of a single stimulus generator across a number of electrolyzer stacks, each comprising a set of electrochemical cells. By distributing a stimulus signal, impedance data of the cells in each electrolyzer stack may be measured, e.g., to evaluate their condition or the condition of the stack without the need for separate stimulus blocks for each electrolyzer stack. In various embodiments, sharing the stimulus generator is enabled by sequentially directing stimulus signals to different stacks. The resulting response signals, indicative of the impedance of cells or entire stacks, are processed locally at each respective electrolyzer stack. Advantageously, the stimulus generator may be remotely located, e.g., at a location that is subject to less stringent safety measures, thereby lowering both equipment and operational expenses.

公开(公告)号：US20240337034A1

公开(公告)日：2024-10-10

申请号：US18745798

申请日：2024-06-17

Applicant: Analog Devices, Inc.

Inventor： Zhiwu Zheng ,  Sheila Patricia Seidel ,  Sue Zheng ,  Atulya Yellepeddi

IPC: C25B15/023 ,  C25B9/70 ,  C25B15/06

CPC classification number: C25B15/023 ,  C25B9/70 ,  C25B15/06

Abstract: Systems and methods are provided for operating an electrolyzer. The systems and methods perform operations comprising extracting, by monitoring circuitry coupled to a plurality of electrolytic cells of an electrolyzer, a set of features comprising at least one of a goodness-of-fit measurement or direct current (DC) measurement of the plurality of electrolytic cells; tracking changes to the set of features over a time period; and generating, based on the changes to the set of features, a model representing operating conditions of the electrolytic cells on an individual electrolytic cell basis.

公开(公告)号：US20240302472A1

公开(公告)日：2024-09-12

申请号：US18595283

申请日：2024-03-04

Applicant: Analog Devices, Inc.

Inventor： Brian Harrington ,  Sheila Patricia Seidel ,  Leah Alexis Garber ,  Sue Zheng ,  Kate Danielle Fischl ,  Atulya Yellepeddi ,  Evan Merkel

IPC: G01R35/00 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/396

CPC classification number: G01R35/005 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/396

Abstract: A calibration system for calibrating an electrochemical impedance spectroscopy (EIS) current measurement system can include a calibration resistor, which can have a specified resistance and an unspecified reactance, a reactive element which can have a specified reactance and an unspecified resistance, and a current source, which can be configured to provide a specified current through the reactive element, through the calibration resistor, and through a sense resistor arrangement of the EIS current measurement system to be calibrated, where the sense resistor arrangement can have a resistance and a reactance. The calibration system can also include voltage measurement circuitry, which can be configured to measure (1) a first voltage across the calibration resistor and a second voltage across the sense resistor arrangement and (2) a third voltage across the reactive element and a fourth voltage across the sense resistor arrangement, to determine a calibrated resistance value and a calibrated reactance value associated with the sense resistor arrangement.

公开(公告)号：US20240302444A1

公开(公告)日：2024-09-12

申请号：US18595276

申请日：2024-03-04

Applicant: Analog Devices, Inc.

Inventor： Brian Harrington ,  Sheila Patricia Seidel ,  Leah Alexis Garber ,  Sue Zheng ,  Kate Danielle Fischl ,  Atulya Yellepeddi ,  Evan Merkel

IPC: G01R31/389 ,  G01R31/385

CPC classification number: G01R31/389 ,  G01R31/386

Abstract: An electrochemical impedance spectroscopy (EIS) current measurement system for measuring a current through a cell arrangement including one or more electrochemical cells can include a sense resistor arrangement, which can be configured to be placed in series with the cell arrangement, and voltage measurement circuitry, which can be configured to measure a voltage across the sense resistor arrangement, including to measure at least a direct current (DC) component of the voltage, where a current through the sense resistor arrangement can have a DC component and an alternating current (AC) component.

公开(公告)号：US20240302443A1

公开(公告)日：2024-09-12

申请号：US18595248

申请日：2024-03-04

Applicant: Analog Devices, Inc.

Inventor： Atulya Yellepeddi ,  Leah Alexis Garber ,  Brian Harrington

IPC: G01R31/389 ,  G01R31/385

CPC classification number: G01R31/389 ,  G01R31/385

Abstract: An electrochemical impedance spectroscopy (EIS) current measurement system for measuring a current through a cell arrangement including one or more electrochemical cells can include a parallel arrangement of a plurality of sense resistors, which can be configured to be placed in series with the cell arrangement, and voltage measurement circuitry, which can be configured to measure respective voltages across corresponding ones of the sense resistors.

公开(公告)号：US11830289B2

公开(公告)日：2023-11-28

申请号：US16898721

申请日：2020-06-11

Applicant: Analog Devices, Inc.

Inventor： Atulya Yellepeddi ,  Kaushal Sanghai ,  John Robert McCarty ,  Brian C. Donnelly ,  Nicolas Le Dortz ,  Johannes Traa

IPC: G06V40/16 ,  G06T7/70 ,  H04S7/00

CPC classification number: G06V40/172 ,  G06T7/70 ,  H04S7/30 ,  G06T2207/10016 ,  G06T2207/30201 ,  G06T2210/12

Abstract: Far field devices typically rely on audio only for enabling user interaction and involve only audio processing. Adding a vision-based modality can greatly improve the user interface of far field devices to make them more natural to the user. For instance, users can look at the device to interact with it rather than having to repeatedly utter a wakeword. Vision can also be used to assist audio processing, such as to improve the beamformer. For instance, vision can be used for direction of arrival estimation. Combining vision and audio can greatly enhance the user interface and performance of far field devices.

公开(公告)号：US20230374681A1

公开(公告)日：2023-11-23

申请号：US18042543

申请日：2022-02-04

Applicant: Analog Devices, Inc.

Inventor： Atulya Yellepeddi ,  Brian Harrington ,  Sasha Dass ,  Antonio Montalvo

IPC: C25B15/025 ,  C25B9/70

CPC classification number: C25B15/025 ,  C25B9/70

Abstract: Systems and methods are provided for operating an electrolyzer. The systems and methods perform operations comprising obtaining a plurality of impedance measurements of the plurality of electrolytic cells at a plurality of frequencies; tracking changes to the plurality of impedance measurements of the plurality of electrolytic cells over a time period; and generating, based on the changes to the plurality of impedance measurements, a model representing operating conditions of the electrolytic cells on an individual electrolytic cell basis.