公开(公告)号：US20240295536A1

公开(公告)日：2024-09-05

申请号：US18116174

申请日：2023-03-01

Applicant: General Electric Company

Inventor： Radislav Alexandrovich Potyrailo ,  Janell Marie Crowder ,  Richard St. Pierre ,  Baokai Cheng

IPC: G01N33/00

CPC classification number: G01N33/0073 ,  G01N33/0006 ,  G01N33/0062 ,  G01N33/0068

Abstract: A sensor device may include an electrochemical (EC) gas sensor, a metal-oxide semiconductor (MOS) gas sensor, and control circuitry. The control circuitry may provide EC excitation signals to the EC gas sensor, provide at least two MOS excitation signals to the MOS gas sensor, and detect at least two gases. The control circuitry may detect the gases based on receiving EC response signals from the at least one EC gas sensor based on providing the EC excitation signals, receiving MOS response signals from the MOS gas sensor based on providing the MOS excitation signals, determining a multivariate response pattern based on the EC response signals and the MOS response signals, and differentiating between the at least two gases in contact with the sensor device based on the multivariate response pattern.

公开(公告)号：US20240011934A1

公开(公告)日：2024-01-11

申请号：US17859921

申请日：2022-07-07

Applicant: General Electric Company

Inventor： Radislav Alexandrovich Potyrailo ,  Baokai Cheng ,  Janell Marie Crowder

IPC: G01N27/404 ,  G01N27/413

CPC classification number: G01N27/404 ,  G01N27/413

Abstract: An electrochemical gas sensor for multi-gas analysis of a fluid sample includes an electrochemical gas sensing element and a data collection component. The data collection component is configured to cycle the electrochemical gas sensing element between first excitation and signal detection values and second excitation and signal detection values at a predetermined time constant, and to measure responses of the electrochemical gas sensor to the fluid sample at the first excitation and signal detection values and the second excitation and signal detection values wherein the responses of the electrochemical gas sensor to the fluid sample at the first excitation and signal detection values and the second excitation and signal detection values are indicative of identities, respective concentrations, or a combination thereof, of at least two analyte gases of the fluid sample.

公开(公告)号：US20240011928A1

公开(公告)日：2024-01-11

申请号：US17859874

申请日：2022-07-07

Applicant: General Electric Company

Inventor： Radislav Alexandrovich Potyrailo ,  Janell Marie Crowder

IPC: G01N27/22 ,  G01N1/44 ,  G01N33/00 ,  H05B3/02

CPC classification number: G01N27/221 ,  G01N1/44 ,  G01N33/0027 ,  H05B3/02

Abstract: A system and a method for multi-gas sensing using dielectric excitation of a single sensing material operated at a single operating temperature. Contrary to conventional gas sensor designs, embodiments of the gas sensors disclosed herein implement a metal oxide semiconductor sensing material maintained at a constant temperature, wherein dielectric excitation responses of the sensing material are measured at this constant temperature while the sensing material is exposed to a fluid sample. The disclosed gas sensors and gas sensing methods unexpectedly provide desirable characteristics, such as enhanced multi-gas differentiation, while operating at the constant operating temperature. For example, by measuring dielectric excitation responses of using at least one gas sensing element at a single operating temperature, the disclosed gas sensors and gas sensing methods demonstrate superior multi-gas differentiation compared to other gas sensors and other gas sensing methods that rely on multiple resistance measurements performed at several different operating temperatures.