公开(公告)号：US20240060922A1

公开(公告)日：2024-02-22

申请号：US18259376

申请日：2021-12-20

Applicant: KYB Corporation

Inventor： Ryohei NAKAMURA ,  Yukinori KAMEDA ,  Yuki NAGAI ,  Takahiro YOSHIDA

IPC: G01N27/07 ,  G01N27/08 ,  G01N33/28

CPC classification number: G01N27/07 ,  G01N27/08 ,  G01N33/2888

Abstract: A fluid state detection sensor includes: an electrical conductivity calculation unit having an electrical conductivity calculation part configured to calculate an electrical conductivity of a fluid from a voltage value acquired in a first voltage acquisition part; and a relative dielectric constant calculation unit having a relative dielectric constant calculation part configured to calculate a relative dielectric constant of the fluid from a voltage value acquired in a second voltage acquisition part, wherein the first voltage acquisition part acquires an inter-electrode voltage value after a predetermined time period after a switching part above a connection target of a pair of electrodes to the electrical conductivity calculation unit, and the second voltage acquisition part acquires the inter-electrode voltage value after the predetermined time period after the switching part switched the connection target of the pair of electrodes to the relative dielectric constant calculation unit.

公开(公告)号：US20210033554A1

公开(公告)日：2021-02-04

申请号：US16639443

申请日：2018-05-14

Applicant: KYB Corporation

Inventor： Yukinori KAMEDA ,  Takahiro YOSHIDA

IPC: G01N27/07 ,  G01N27/22

Abstract: A fluid-property detection device includes a housing attached to the external device, the housing being configured to hold the outer electrode and the inner electrode, an outer insulating member provided between the housing and the outer electrode, the outer insulating member being configured to insulate between the housing and the outer electrode, and an inner insulating member provided between the outer electrode and the inner electrode, the inner insulating member being configured to insulate between the outer electrode and the inner electrode, being configured to insulate between the housing and the inner electrode. The outer electrode and the inner electrode respectively have tip end portions, the tip end portions projecting out from the housing and being configured to expose to the detection target fluid contained in the external device.

公开(公告)号：US20180372661A1

公开(公告)日：2018-12-27

申请号：US15774843

申请日：2017-02-28

Applicant: KYB CORPORATION

Inventor： Takahiro YOSHIDA ,  Yukinori KAMEDA

IPC: G01N27/06 ,  G01N33/28 ,  G01N33/30

Abstract: A sensor appropriately detects the state of a fluid while reducing the effects of fluid temperature on fluid characteristics. The sensor includes a characteristics acquisition unit, a temperature measurement unit, a storage unit, and a correction unit. The characteristics acquisition unit acquires a characteristic value for an in-device fluid. The temperature measurement unit measures the in-device fluid temperature when the characteristics acquisition unit acquires the characteristic value. The storage unit stores a database registering an association between a pre-acquired characteristic of the in-device fluid and the in-device fluid temperature measured when the characteristic of the in-device fluid was pre-acquired. The correction unit corrects the characteristic value of the in-device fluid acquired by the characteristics acquisition unit based on the in-device fluid temperature measured by the temperature measurement unit and the database.

公开(公告)号：US20240060923A1

公开(公告)日：2024-02-22

申请号：US18259502

申请日：2021-12-20

Applicant: KYB Corporation

Inventor： Yuki NAGAI ,  Yukinori KAMEDA ,  Takahiro YOSHIDA ,  Ryohei NAKAMURA

IPC: G01N27/07

CPC classification number: G01N27/07

Abstract: A liquid state detection sensor includes: an electrode part, the electrode part having a pair of electrodes provided so as to be opposed to each other; a voltage value acquisition time period setting unit configured to set a voltage value acquisition time period, the voltage value acquisition time period being a length of a time period during which an inter-electrode voltage value of the pair of electrodes of the electrode part is acquired; a voltage value acquisition unit configured to acquire the inter-electrode voltage value in the voltage value acquisition time period; and an electrical conductivity calculation unit configured to calculate an electrical conductivity of the liquid on the basis of, among the inter-electrode voltage value acquired by the voltage value acquisition unit, the inter-electrode voltage value acquired after a predetermined time period has elapsed since a start of the voltage value acquisition time period.

公开(公告)号：US20180328875A1

公开(公告)日：2018-11-15

申请号：US15774867

申请日：2017-02-28

Applicant: KYB CORPORATION

Inventor： Takahiro YOSHIDA ,  Yukinori KAMEDA

IPC: G01N27/22 ,  G01N33/28 ,  G01R27/26 ,  G01R3/00

CPC classification number: G01N27/226 ,  G01N33/2888 ,  G01R3/00 ,  G01R27/26 ,  G01R27/2605

Abstract: A sensor that detects the state of a fluid more appropriately includes a first electrode, a second electrode, a first opposing-side resin portion, and a second opposing-side resin portion. The first and second electrodes are arranged parallel to each other. The first opposing-side resin portion covers an area of a peripheral face of the first electrode, the area opposing the second electrode. The second opposing-side resin portion covers an area of a peripheral face of the second electrode, the area opposing the first electrode.

公开(公告)号：US20180372660A1

公开(公告)日：2018-12-27

申请号：US15774808

申请日：2017-02-28

Applicant: KYB CORPORATION

Inventor： Takahiro YOSHIDA ,  Yukinori KAMEDA

IPC: G01N27/06 ,  G01N33/30 ,  G01N33/28

Abstract: A sensor provides further detailed judgment with respect to the state of a fluid used in a device. The sensor includes a characteristics acquisition unit, a time measurement unit, and a state judgment unit. The characteristics acquisition unit acquires the dielectric constant and the conductivity of the fluid. The time measurement unit measures the time that elapses from the time point at which the fluid was charged to the device. The state judgment unit judges the state of the fluid based on the dielectric constant and the conductivity acquired by the characteristics acquisition unit and the time measured by the time measurement unit.

公开(公告)号：US20180328906A1

公开(公告)日：2018-11-15

申请号：US15774833

申请日：2017-02-28

Applicant: KYB CORPORATION

Inventor： Takahiro YOSHIDA ,  Yukinori KAMEDA

IPC: G01N33/28 ,  G01N21/51 ,  G01N21/55 ,  G01N21/59

CPC classification number: G01N33/2888 ,  G01N21/51 ,  G01N21/55 ,  G01N21/59 ,  G01N2021/5938 ,  G01N2201/0221

Abstract: A fluid state detection system that enables the state of a fluid to be readily detected is provided. A fluid state detection system for detecting the state of a fluid in a container includes a measurement window formed in a wall of the container, and a fluid state detection apparatus for detecting the state of the fluid. The fluid state detection apparatus includes a transmission unit, a receiving unit, and a detection unit. The transmission unit emits electromagnetic waves via the measurement window toward the fluid. The receiving unit receives reflected waves, transmitted waves, or re-radiated scattered waves of the electromagnetic waves emitted from the transmission unit via the measurement window toward the fluid. The detection unit detects the state of the fluid based on the electromagnetic waves emitted from the transmission unit and the electromagnetic waves received by the receiving unit.