公开(公告)号：US20240151699A1

公开(公告)日：2024-05-09

申请号：US18486297

申请日：2023-10-13

Applicant: TDK Corporation

Inventor： Yoshio KAITA ,  Hiroshi KOBAYASHI ,  Yasuhiro INUI

IPC: G01N33/00 ,  G01K7/24 ,  G01N27/12 ,  G01N27/18

CPC classification number: G01N33/004 ,  G01K7/24 ,  G01N27/124 ,  G01N27/18

Abstract: Disclosed herein is a gas sensor that includes a gas sensor part including first and second thermistors connected in series, a temperature sensor part configured to generate a temperature detection signal, a variable resistor connected in parallel to the first thermistor, and a control circuit configured to change a resistance value of the variable resistor based on the temperature detection signal.

公开(公告)号：US20240230570A9

公开(公告)日：2024-07-11

申请号：US18482431

申请日：2023-10-06

Applicant: TDK Corporation

Inventor： Yoshio KAITA ,  Yasuhiro INUI ,  Yutaka MATSUO

IPC: G01N27/12 ,  G01N27/18 ,  G01N33/00

CPC classification number: G01N27/122 ,  G01N27/18 ,  G01N33/004

Abstract: Disclosed herein is a gas sensor that includes a sensor part configured to generate a gas detection signal in accordance with a concentration of a gas to be measured, and a control circuit configured to generate an output signal indicating the concentration of the gas to be measured based on the gas detection signal. The control circuit is configured to correct the output signal so that the output signal indicates a concentration of the gas to be measured higher than that indicated by the gas detection signal when a level of the gas detection signal output from the sensor part is less than a reference value corresponding to a level of the gas detection signal which is normally obtained when a concentration of the gas to be measured is a concentration value in normal time.

公开(公告)号：US20240133834A1

公开(公告)日：2024-04-25

申请号：US18482431

申请日：2023-10-05

Applicant: TDK Corporation

Inventor： Yoshio KAITA ,  Yasuhiro INUI ,  Yutaka MATSUO

IPC: G01N27/12 ,  G01N27/18 ,  G01N33/00

CPC classification number: G01N27/122 ,  G01N27/18 ,  G01N33/004

Abstract: Disclosed herein is a gas sensor that includes a sensor part configured to generate a gas detection signal in accordance with a concentration of a gas to be measured, and a control circuit configured to generate an output signal indicating the concentration of the gas to be measured based on the gas detection signal. The control circuit is configured to correct the output signal so that the output signal indicates a concentration of the gas to be measured higher than that indicated by the gas detection signal when a level of the gas detection signal output from the sensor part is less than a reference value corresponding to a level of the gas detection signal which is normally obtained when a concentration of the gas to be measured is a concentration value in normal time.