公开(公告)号：US20210148510A1

公开(公告)日：2021-05-20

申请号：US17066491

申请日：2020-10-09

Applicant: Keyence Corporation

Inventor： Ryuma MIYAKE ,  Yuta KATO

IPC: F16P3/14 ,  G01V8/20

Abstract: Recording a history related to an operation of a safety program contributes to a determination of a cause of a false OFF signal. A safety controller acquires, from at least one safety input device or safety sensor, extra information that is not used for obtaining an output signal and records an input signal and an output signal together with the extra information as history information at predetermined recording intervals.

公开(公告)号：US20240288332A1

公开(公告)日：2024-08-29

申请号：US18411080

申请日：2024-01-12

Applicant: Keyence Corporation

Inventor： Masaki ISHIHARA ,  Yuta KATO ,  Masashi KAWANAKA ,  Shinichi TSUKIGI

IPC: G01M3/26

CPC classification number: G01M3/26

Abstract: It is possible to perform prompt and accurate diagnosis of a pneumatic device while mitigating a burden on a user at the time of introduction. A flow sensor includes: a flow rate measuring element for measuring a flow rate of a working gas in a pipe; a pressure measuring element for measuring a pressure of the working gas in the pipe; and an evaluation unit that determines a characteristic amount indicating an operation of the pneumatic device based on a combination of the flow rate measured by the flow rate measuring element and the pressure measured by the pressure measuring element, and evaluates the operation of the pneumatic device based on the determined characteristic amount.