公开(公告)号：US20220236225A1

公开(公告)日：2022-07-28

申请号：US17605543

申请日：2020-04-17

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Masashi HATTORI ,  Kenichi SHIMOMAI ,  Yosuke ONDA

IPC: G01N29/036 ,  G01N29/44 ,  G01N1/40 ,  G01N33/00

Abstract: [Object] To provide an arithmetic device, an arithmetic method, and a gas detection system that are capable of easily correcting deterioration over time of a detection element.
[Solving Means] The arithmetic device includes a calculation unit. The calculation unit calculates a correction coefficient from a detection element that causes a resonant frequency change by adsorption of gas on the basis of a resonant frequency change amount associated with a humidity change of the detection element in a degraded state and a resonant frequency change amount associated with a humidity change of the detection element in an initial state that was acquired in advance, and corrects the resonant frequency change amount of the detection element in the degraded state by using the correction coefficient.

公开(公告)号：US20220178871A1

公开(公告)日：2022-06-09

申请号：US17681314

申请日：2022-02-25

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Manoharan MURUGANATHAN ,  Gabriel AGBONLAHOR ,  Hiroshi MIZUTA ,  Kenichi SHIMOMAI ,  Masashi HATTORI ,  Yosuke ONDA

IPC: G01N27/414

Abstract: A gas determination method uses a sensor having a field-effect transistor structure including a gate electrode, an insulating film formed on the gate electrode, a source electrode and a drain electrode formed on the insulating film, and a graphene layer formed on the insulating film and connecting the source electrode and the drain electrode to each other. The gas determination method includes: supplying gas to the graphene layer; applying a first voltage to the gate electrode for a predetermined period of time; and thereafter measuring a change in a current flowing between the source electrode and the drain electrode when a sweep voltage is applied to the gate electrode, repeating the same current measurement with a second voltage different from the first voltage, and determining the gas based on the measurement results.

公开(公告)号：US20210003543A1

公开(公告)日：2021-01-07

申请号：US17028040

申请日：2020-09-22

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Masashi HATTORI ,  Junji OSHITA ,  Kenichi SHIMOMAI

IPC: G01N33/00 ,  G01N25/48

Abstract: A sensing system includes: a first odor sensor including one or more detection elements respectively detecting an amount of an odor-causing substance or substances existing in air; a filter to remove the odor-causing substance existing in air; a second odor sensor including one or more detection elements respectively detecting an amount of the odor-causing substance or substances existing in air having passed through the filter; and one or more processor generating and outputting one or more detection signals by calculating a difference between one or more first output signals generated by the one or more detection elements of the first odor sensor and one or more second output signals generated by the one or more detection elements of the second odor sensor, the one or more processors generating and outputting odor information based on one or more waveforms of the generated one or more detection signals.

公开(公告)号：US20180088088A1

公开(公告)日：2018-03-29

申请号：US15710617

申请日：2017-09-20

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Kenichi SHIMOMAI ,  Masashi HATTORI ,  Junji OSHITA

IPC: G01N29/32 ,  G01N29/22 ,  G01N29/036

CPC classification number: G01N29/326 ,  G01N29/036 ,  G01N29/222 ,  G01N29/4463 ,  G01N2291/014 ,  G01N2291/0255 ,  G01N2291/0256

Abstract: A gas sensor is equipped with a first detection element which has a first oscillator and a first adsorption film provided on the first oscillator to adsorb a specific gas, and changes its resonance frequency according to the adsorption of the gas; a second detection element which has a second oscillator and a second adsorption film provided on the second oscillator to adsorb moisture in the gas, and changes its resonance frequency according to the adsorption of the moisture; a third detection element which has a third oscillator, and changes its resonance frequency according to the temperature of the gas; and a computing unit which corrects the change in the resonance frequency of the first detection element based on the change in the resonance frequency of the second detection element and the change in the resonance frequency of the third detection element.

公开(公告)号：US20230245832A1

公开(公告)日：2023-08-03

申请号：US18159561

申请日：2023-01-25

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Yoshinari TAKE ,  Junko SAKASHITA ,  Kenichi SHIMOMAI

IPC: H01G4/30 ,  H01G4/012 ,  H01G4/12 ,  H01G4/008

CPC classification number: H01G4/30 ,  H01G4/008 ,  H01G4/012 ,  H01G4/12

Abstract: A ceramic electronic device includes a multilayer chip in which each of a plurality of dielectric layers and each of a plurality of internal electrode layers are alternately stacked, the multilayer chip having a parallelepiped rectangular shape, the plurality of internal electrode layers being alternately exposed to two opposite faces of the multilayer chip, and two external electrodes that are formed respectively on the two opposite faces. The two external electrodes have a structure in which a plated layer is formed on a conductive thin film intermittently formed with a thickness of 0.1 µm or more and 1.5 µm or less.

公开(公告)号：US20190193528A1

公开(公告)日：2019-06-27

申请号：US16226338

申请日：2018-12-19

Applicant: TAIYO YUDEN CO., LTD.

Inventor： Masashi HATTORI ,  Yosuke ONDA ,  Kenichi SHIMOMAI ,  Jin MIKATA ,  Taiji ITO

IPC: B60H3/00 ,  B60H3/06 ,  B60H1/00

CPC classification number: B60H3/0085 ,  B60H1/00742 ,  B60H3/06

Abstract: An air conditioning system includes: an air conditioner to regulate a state of air in a room; a sensor device including at least one detector to detect an amount of an odor-causing substance included in the air in the room; and a control device to control operation of the air conditioner. The control device includes: a first acquisition unit to acquire a detected value of each of the at least one detector at a first timing when a person is present in the room; a second acquisition unit to acquire a detected value of each of the at least one detector at a second timing later than the first timing; a difference calculator to calculate a difference between the detected value at the first timing and the detected value at the second timing; and an instruction unit to control operation of the air conditioner based on the difference.