公开(公告)号：US09632062B2

公开(公告)日：2017-04-25

申请号：US14483797

申请日：2014-09-11

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Yoshiaki Tanaka ,  Kazunori Miyazawa ,  Ken'ichi Kamada ,  Satoshi Kato ,  Yosuke Ishii ,  Sho Fujita ,  Yukiyo Akisada ,  Nobuo Okabe ,  Hiroaki Tanaka ,  Minako Terao

IPC: G01N29/04 ,  G01B17/02 ,  G01N17/00 ,  G01N29/07 ,  G01N29/11

CPC classification number: G01N29/04 ,  G01B17/02 ,  G01N17/00 ,  G01N29/043 ,  G01N29/07 ,  G01N29/11 ,  G01N2291/015 ,  G01N2291/023 ,  G01N2291/02854 ,  G01N2291/0289 ,  G01N2291/2634

Abstract: An ultrasonic pipe measurement apparatus includes: a plurality of ultrasonic transceivers discretely disposed on a pipe wall of a pipe; and a control unit configured to control the plurality of ultrasonic transceivers and detect a generation point of damage caused in the pipe based on an ultrasonic signal exchanged between the ultrasonic transceivers.

公开(公告)号：US09581480B2

公开(公告)日：2017-02-28

申请号：US13906121

申请日：2013-05-30

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Yoshiaki Tanaka ,  Minako Terao ,  Hiroaki Tanaka

IPC: G01F15/14 ,  G01F15/00 ,  G01F1/684

CPC classification number: G01F1/6845 ,  G01F1/6842 ,  G01F1/6847 ,  G01F15/00 ,  G01F15/14

Abstract: A micro flow sensor includes: a flow path through which a fluid to be measured flows; a detection unit having a heater configured to heat the fluid to be measured in the flow path and temperature sensors configured to measure temperature of a fluid to be measured in the flow path; an arithmetic unit configured to measure a flow rate of the fluid to be measured flowing through the flow path based on the temperature of the fluid to be measured, measured by the temperature sensors; and a narrowed portion disposed on an upstream side of the detection unit in the flow path for narrowing the flow path.

Abstract translation: 微流量传感器包括：待测流体流过的流路; 检测单元，其具有加热器，所述加热器构造成加热所述流路中的待测量流体;温度传感器，被配置为测量所述流路中待测量流体的温度; 运算单元，其被配置为基于由所述温度传感器测量的待测量流体的温度来测量流过所述流路的被测量流体的流量; 以及设置在流路中的检测单元的上游侧的变窄部分，用于使流路变窄。

公开(公告)号：US11933726B2

公开(公告)日：2024-03-19

申请号：US17600475

申请日：2020-03-23

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Syuhei Okada ,  Hiroaki Tanaka

IPC: G01N21/552 ,  G01N21/35

CPC classification number: G01N21/552 ,  G01N21/35

Abstract: A measurement apparatus includes a generator that causes electromagnetic waves to be incident on a sample, a receiver that receives electromagnetic waves reflected by the sample, and a controller that controls the generator and receiver. The sample includes a first layer on which the electromagnetic waves are incident and a second layer stacked on the first layer. The controller detects whether a third layer is present between the first and second layers based on the electromagnetic waves incident on the sample from the generator and the electromagnetic waves received by the receiver. The generator causes the electromagnetic waves to be incident at an angle such that the electromagnetic waves are totally reflected between the first and third layers and/or between the first and second layers.

公开(公告)号：US11885841B2

公开(公告)日：2024-01-30

申请号：US17275464

申请日：2019-09-19

Applicant: Yokogawa Electric Corporation ,  Hosei University

Inventor： Yoshinori Matsumoto ,  Hiroaki Tanaka ,  Jun Katsuyama ,  Mitsuru Shinagawa

IPC: G02F1/035 ,  G02F1/295 ,  G02B6/12 ,  G01R29/08 ,  G02F1/03 ,  G02F1/225

CPC classification number: G01R29/0885 ,  G02F1/0305 ,  G02F1/225

Abstract: An electric field sensor which measures an electric field generated by a target utilizing an electro-optic effect, the electric field sensor including a light source, an electro-optic crystal on which light in a predetermined polarization state emitted from the light source is incident and which is subjected to the electric field generated by the target, a reference electric field applicator configured to apply an electric field based on a reference signal with a known signal level to the electro-optic crystal, a light receiver configured to receive light emitted from the electro-optic crystal and to convert the received light into an electric signal, and a separation corrector configured to separate the electric signal into a measurement signal based on the electric field generated by the target and the reference signal and to correct a signal level of the measurement signal on the basis of the signal level of the separated reference signal.

公开(公告)号：US09279708B2

公开(公告)日：2016-03-08

申请号：US14292965

申请日：2014-06-02

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Hiroaki Tanaka ,  Minako Terao ,  Yoshiaki Tanaka

IPC: G01F1/66 ,  G01F25/00

CPC classification number: G01F1/662 ,  G01F1/667 ,  G01F1/668 ,  G01F25/0007

Abstract: An ultrasonic flowmeter includes a plurality of ultrasonic wave elements attached to an outer wall of a pipeline through which a measurement target fluid flows, and configured to transmit and receive an ultrasonic signal, wherein at least one of the ultrasonic wave elements is an ultrasonic wave transmission element and is attached to the outer wall of the pipeline so that an ultrasonic wave transmission surface thereof is in parallel to a pipe axis direction of the pipeline, and another at least one of the ultrasonic wave elements is an ultrasonic wave reception element and is attached to the outer wall of the pipeline so that an ultrasonic wave reception surface thereof is in parallel to the pipe axis direction of the pipeline.

Abstract translation: 一种超声波流量计，包括：多个超声波元件，其安装在管道的外壁上，测量对象流体通过该外壁流动，并被配置为发送和接收超声波信号，其中至少一个超声波元件是超声波传输 并且附接到管道的外壁，使得其超声波传播表面与管道的管轴方向平行，另外至少一个超声波元件是超声波接收元件，并且被附接 到管道的外壁，使得其超声波接收面与管道的管轴方向平行。