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：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.