公开(公告)号：US08285086B2

公开(公告)日：2012-10-09

申请号：US12529865

申请日：2008-01-07

申请人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Kiichi Yoshiara ,  Eiji Yagyu ,  Tateki Mitani ,  Yutaro Hamatani

发明人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Kiichi Yoshiara ,  Eiji Yagyu ,  Tateki Mitani ,  Yutaro Hamatani

IPC分类号： G02B6/00 ,  G02B6/34

CPC分类号： G01N21/774

摘要： An optical fiber sensor measuring refractive index of a medium with high sensitivity in a wide range. The optical fiber sensor includes an optical fiber causing a transmission loss due to leakage in the clad propagation mode from a portion of a core and a clad where a Bragg grating is provided, a light source permitting light in a wavelength band in the clad propagation mode to enter the optical fiber, and a light-receiving section receiving the transmitted or reflected light transmitted through the core and the clad at the portion where the Bragg grating is provided. The refractive index of the medium to be measured in contact with the clad is measured according to total intensity of the light received by the light-receiving section. The Bragg grating is inclined at a predetermined angle of inclination to the vertical line vertical to the length direction of the optical fiber.

摘要翻译： 测量宽范围高灵敏度介质折射率的光纤传感器。 光纤传感器包括光纤，该光纤引起由包层传播模式中的泄漏引起的传输损耗，其中芯部和布拉格光栅的包层部分，允许在覆盖传播模式中波长带的光的光源 以及光接收部分，其接收在布拉格光栅提供的部分处透射穿过芯体和包层的透射或反射光。 根据由光接收部接收的光的总强度来测量与包层接触的待测量介质的折射率。 布拉格光栅以与光纤的长度方向垂直的垂直线倾斜预定的倾斜角度。

公开(公告)号：US20100080502A1

公开(公告)日：2010-04-01

申请号：US12529865

申请日：2008-01-07

申请人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Kiichi Yoshiara ,  Eiji Yagyu ,  Tateki Mitani ,  Yutaro Hamatani

发明人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Kiichi Yoshiara ,  Eiji Yagyu ,  Tateki Mitani ,  Yutaro Hamatani

IPC分类号： G02B6/00

CPC分类号： G01N21/774

摘要： An optical fiber sensor measuring refractive index of a medium with high sensitivity in a wide range. The optical fiber sensor includes an optical fiber causing a transmission loss due to leakage in the clad propagation mode from a portion of a core and a clad where a Bragg grating is provided, a light source permitting light in a wavelength band in the clad propagation mode to enter the optical fiber, and a light-receiving section receiving the transmitted or reflected light transmitted through the core and the clad at the portion where the Bragg grating is provided. The refractive index of the medium to be measured in contact with the clad is measured according to total intensity of the light received by the light-receiving section. The Bragg grating is inclined at a predetermined angle of inclination to the vertical line vertical to the length direction of the optical fiber.

摘要翻译： 测量宽范围高灵敏度介质折射率的光纤传感器。 光纤传感器包括光纤，该光纤引起由包层传播模式中的泄漏引起的传输损耗，其中芯部和布拉格光栅的包层部分，允许在覆盖传播模式中波长带的光的光源 以及光接收部分，其接收在布拉格光栅提供的部分处透射穿过芯体和包层的透射或反射光。 根据由光接收部接收的光的总强度来测量与包层接触的待测量介质的折射率。 布拉格光栅以与光纤的长度方向垂直的垂直线倾斜预定的倾斜角度。

公开(公告)号：US20100296080A1

公开(公告)日：2010-11-25

申请号：US12745815

申请日：2008-12-03

申请人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Eiji Yagyu ,  Kiichi Yoshiara ,  Tateki Mitani ,  Yutarou Hamatani

发明人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Eiji Yagyu ,  Kiichi Yoshiara ,  Tateki Mitani ,  Yutarou Hamatani

IPC分类号： G01N21/41

CPC分类号： G01N21/431 ,  G01D5/35383 ,  G01N2021/433 ,  G02B6/02085

摘要： An objective of the present invention is to provide an optical fiber sensor which has a simple configuration to enable sensitively measuring a refractive index of a measurement medium in a wide range of refractive indexes. An optical fiber sensor according to the present invention includes; an optical fiber having a core in which a short-period gratings are formed and a cladding, the optical fiber being made so that transmission loss occurs due to cladding-propagation-mode leakage at its cladding portion where the short-period gratings are formed; a light source from which light having a wavelength range of the cladding propagation mode is emitted; and a light receiving unit for receiving transmission or reflection light having passed through the cladding at the position where the short-period gratings are formed. The optical fiber sensor detects, based on the total receiving light intensity that the light receiving unit receives, the refractive index of the measurement medium contacting the cladding, in which the optical fiber is multi-mode one, and the short-period gratings have plural kinds of periods.

摘要翻译： 本发明的目的是提供一种光纤传感器，其具有能够在宽范围的折射率下敏感地测量测量介质的折射率的简单配置。 根据本发明的光纤传感器包括： 具有形成短周期光栅的芯的光纤和包层，使得在形成有短周期光栅的包层部分由于包层传播模式泄漏而发生传输损耗的光纤; 发射具有包层传播模式的波长范围的光的光源; 以及光接收单元，用于在形成短周期光栅的位置处接收穿过包层的透射或反射光。 光纤传感器基于光接收单元接收的总接收光强度来检测与光纤为多模光纤的包层接触的测量介质的折射率，短周期光栅具有多个 种类的时期。

公开(公告)号：US08351029B2

公开(公告)日：2013-01-08

申请号：US12745815

申请日：2008-12-03

申请人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Eiji Yagyu ,  Kiichi Yoshiara ,  Tateki Mitani ,  Yutarou Hamatani

发明人： Satoshi Nishikawa ,  Masakazu Takabayashi ,  Eiji Yagyu ,  Kiichi Yoshiara ,  Tateki Mitani ,  Yutarou Hamatani

IPC分类号： G01N21/41 ,  G01J1/00

CPC分类号： G01N21/431 ,  G01D5/35383 ,  G01N2021/433 ,  G02B6/02085

摘要： An objective of the present invention is to provide an optical fiber sensor which has a simple configuration to enable sensitively measuring a refractive index of a measurement medium in a wide range of refractive indexes. An optical fiber sensor according to the present invention includes; an optical fiber having a core in which a short-period gratings are formed and a cladding, the optical fiber being made so that transmission loss occurs due to cladding-propagation-mode leakage at its cladding portion where the short-period gratings are formed; a light source from which light having a wavelength range of the cladding propagation mode is emitted; and a light receiving unit for receiving transmission or reflection light having passed through the cladding at the position where the short-period gratings are formed. The optical fiber sensor detects, based on the total receiving light intensity that the light receiving unit receives, the refractive index of the measurement medium contacting the cladding, in which the optical fiber is multi-mode one, and the short-period gratings have plural kinds of periods.

摘要翻译： 本发明的目的是提供一种光纤传感器，其具有能够在宽范围的折射率下敏感地测量测量介质的折射率的简单配置。 根据本发明的光纤传感器包括： 具有形成短周期光栅的芯的光纤和包层，使得在形成有短周期光栅的包层部分处的包层传播模式泄漏的情况下，使光纤发生传输损耗; 发射具有包层传播模式的波长范围的光的光源; 以及光接收单元，用于在形成短周期光栅的位置处接收穿过包层的透射或反射光。 光纤传感器基于光接收单元接收的总接收光强度来检测与光纤为多模光纤的包层接触的测量介质的折射率，短周期光栅具有多个 种类的时期。

公开(公告)号：US07672544B2

公开(公告)日：2010-03-02

申请号：US11914271

申请日：2006-05-22

申请人： Masakazu Takabayashi ,  Kiichi Yoshiara ,  Yasuhisa Shimakura ,  Sadayuki Matsumoto ,  Tateki Mitani ,  Shigeki Kanamaru ,  Kazushi Ishii

发明人： Masakazu Takabayashi ,  Kiichi Yoshiara ,  Yasuhisa Shimakura ,  Sadayuki Matsumoto ,  Tateki Mitani ,  Shigeki Kanamaru ,  Kazushi Ishii

IPC分类号： G02B6/00

CPC分类号： B60K15/077 ,  B60K2015/03217 ,  G01F23/292 ,  G01F23/2925 ,  G01N21/8507

摘要： An optical fiber sensor that can detect a liquid level or detect a property of liquid with high reliability even under a frequently vibrational environment. The optical fiber sensor includes an optical fiber that includes a core having an area where a grating is formed and a clad, the optical fiber being disposed so that at least a part of the area with the grating is immersed in liquid, a light source for making light incident to the optical fiber so that a cladding mode light having a wavelength band is generated by the grating, and a light receiving unit for detecting the intensity of light which is incident from the light source to the optical fiber and transmitted through the grating.

摘要翻译： 即使在频繁的振动环境下也能够高度可靠地检测液位或检测液体的性质的光纤传感器。 光纤传感器包括光纤，其包括具有形成光栅的区域的芯和包层，光纤被布置成使得具有光栅的区域的至少一部分浸没在液体中，光源用于 使光入射到光纤，使得由光栅产生具有波长带的包层模式光;以及光接收单元，用于检测从光源入射到光纤并透射通过光栅的光的强度 。

公开(公告)号：US20090034901A1

公开(公告)日：2009-02-05

申请号：US11914271

申请日：2006-05-22

申请人： Masakazu Takabayashi ,  Kiichi Yoshiara ,  Yasuhisa Shimakura ,  Sadayuki Matsumoto ,  Tateki Mitani ,  Shigeki Kanamaru ,  Kazushi Ishii

发明人： Masakazu Takabayashi ,  Kiichi Yoshiara ,  Yasuhisa Shimakura ,  Sadayuki Matsumoto ,  Tateki Mitani ,  Shigeki Kanamaru ,  Kazushi Ishii

IPC分类号： G02B6/00 ,  G01N21/00

CPC分类号： B60K15/077 ,  B60K2015/03217 ,  G01F23/292 ,  G01F23/2925 ,  G01N21/8507

摘要： An optical fiber sensor that can detect a liquid level or detect a property of liquid with high reliability even under a frequently vibrational environment. The optical fiber sensor includes an optical fiber that includes a core having an area where a grating is formed and a clad, and is disposed so that at least a part of the area with the grating is immersed in liquid, a light source for making light incident to the optical fiber so that a cladding mode light having a wavelength band is occurred by the grating, and a light receiving unit for detecting the intensity of light which is incident from the light source to the optical fiber and transmitted through the grating.

摘要翻译： 即使在频繁的振动环境下也能够高度可靠地检测液位或检测液体的性质的光纤传感器。 光纤传感器包括光纤，其包括具有形成光栅的区域的芯和包层，并且被布置成使得具有光栅的区域的至少一部分浸没在液体中，用于制造光的光源 入射到光纤，使得由光栅发生具有波长带的包层模式光;以及光接收单元，用于检测从光源入射到光纤并透射通过光栅的光的强度。

公开(公告)号：US07859662B2

公开(公告)日：2010-12-28

申请号：US11856959

申请日：2007-09-18

申请人： Yutaro Hamatani ,  Shigeki Kanamaru ,  Tateki Mitani ,  Eiji Yagyu

发明人： Yutaro Hamatani ,  Shigeki Kanamaru ,  Tateki Mitani ,  Eiji Yagyu

IPC分类号： G01J3/40

CPC分类号： G01N21/431 ,  G01N21/85 ,  G01N33/2852

摘要： The detection device provides with an optical fiber composed of a core, a clad and a fiber jacket. A grating is applied to the core, and the fiber jacket located at the portion to which the grating is applied is removed so that the clad is in contact with a fuel fed to an injector of a vehicle. The detection device also provides with a light source for incidence of a light in a range of clad mode wavelength to the optical fiber, and a light-sensitive part for detecting an intensity of the light transmitting through the region to which the grating is applied. The optical fiber, light source and light-sensitive part are held in a conduit disposed in a fuel tank or between a fuel pump and the injector of the vehicle.

摘要翻译： 检测装置提供由芯，包层和纤维套组成的光纤。 将光栅施加到芯上，并且去除位于施加光栅的部分处的光纤护套，使得包层与馈送到车辆的喷射器的燃料接触。 该检测装置还提供一个光源，用于将包围模式波长范围内的光入射到光纤;以及光敏部分，用于检测通过施加光栅的区域透射的光的强度。 光纤，光源和感光部分被保持在设置在燃料箱中的导管中，或燃料泵与车辆的喷射器之间。

公开(公告)号：US20110166771A1

公开(公告)日：2011-07-07

申请号：US13062616

申请日：2008-10-29

申请人： Tateki Mitani ,  Satoshi Nishikawa ,  Shingo Iwai

发明人： Tateki Mitani ,  Satoshi Nishikawa ,  Shingo Iwai

IPC分类号： F02D41/30

CPC分类号： F02D19/087 ,  F02D19/084 ,  F02D41/0025 ,  F02D41/182 ,  F02D2200/0611 ,  Y02T10/36

摘要： A fuel control system of the present invention is a fuel control system that controls a fuel injection quantity of an internal combustion engine by controlling combustion of a fuel at a theoretical air-fuel ratio, and is characterized in that the fuel control system estimates a volume of the fuel injection quantity from a measured refractive-index value of the fuel and controls it.

摘要翻译： 本发明的燃料控制系统是燃料控制系统，其通过控制燃料在理论空燃比的燃烧来控制内燃机的燃料喷射量，其特征在于，所述燃料控制系统估计体积 的燃料喷射量从燃料的测量的折射率值控制。

公开(公告)号：US08295657B2

公开(公告)日：2012-10-23

申请号：US12712666

申请日：2010-02-25

申请人： Tateki Mitani ,  Satoshi Nishikawa ,  Shigeki Kanamaru

发明人： Tateki Mitani ,  Satoshi Nishikawa ,  Shigeki Kanamaru

IPC分类号： G02B6/00 ,  G02B6/34

CPC分类号： G01N33/2852 ,  G01N21/552 ,  G01N2021/7759 ,  G01N2021/7776

摘要： An optical fiber sensor includes: an optical fiber; a light source portion; and a light receiving portion. The optical fiber includes: a core that includes a grating that generates a clad mode upon receipt of light; a clad that covers the core; and a fiber jacket that covers the clad, wherein a part of the fiber jacket corresponding to an area where the grating is formed is removed so that the clad is contactable with the fuel. The light source portion includes a light cutting element that emits light, whose wavelength is within a wavelength band of the cladding mode toward the optical fiber. The light receiving portion that detects intensity of the light transmitted through the grating. The optical fiber, the light receiving portion and the light source portion are arranged linearly.

摘要翻译： 光纤传感器包括：光纤; 光源部; 和光接收部分。 光纤包括：芯，其包括在接收到光时产生包覆模式的光栅; 覆盖核心的包层; 以及覆盖所述包层的纤维护套，其中去除与形成所述光栅的区域对应的所述纤维套管的一部分，使得所述包层与所述燃料接触。 光源部包括发光，其波长在包层模式的波长带内朝向光纤。 光接收部，其检测透过光栅的光的强度。 光纤，光接收部分和光源部分线性地布置。

公开(公告)号：US20110282561A1

公开(公告)日：2011-11-17

申请号：US13143826

申请日：2009-03-04

申请人： Tateki Mitani ,  Hideki Hagari ,  Shingo Iwai ,  Satoshi Nishikawa

发明人： Tateki Mitani ,  Hideki Hagari ,  Shingo Iwai ,  Satoshi Nishikawa

IPC分类号： F02D41/00

CPC分类号： F02D9/02 ,  F02D41/0002 ,  F02D41/0025 ,  F02D41/1497 ,  F02D41/18 ,  F02D41/187 ,  F02D2009/022 ,  F02D2200/0402 ,  F02D2200/0406 ,  F02D2200/0411 ,  F02D2200/0611 ,  Y02T10/36

摘要： An ECU (13) includes: throttle-valve opening-degree control means (131) for controlling an intake airflow rate; target output-torque calculating means (132) for calculating a target output torque from an operating state of an engine (1) and an operation of an accelerator performed by a driver; target ignition-timing calculating means (133) for calculating target ignition timing based on the operating state of the engine (1); actual output-torque calculating means (134) for calculating an actual output torque of the engine (1) based on an engine rpm, a charging efficiency, the target ignition timing, an air-fuel ratio, and a total heating value of a fuel; and target intake-air quantity calculating means (135) for calculating a charging efficiency-to-torque conversion factor based on the charging efficiency and the actual output torque, and calculating a target charging efficiency based on the target output torque and the charging efficiency-to-torque conversion factor to calculate a target intake air quantity based on the target charging efficiency. Torque control for the engine is performed while the fuel properties are loaded as information, and hence an engine control amount for realizing the target output torque is realized with high accuracy.

摘要翻译： ECU（13）包括：用于控制进气量的节流阀开度控制装置（131） 用于从发动机（1）的运转状态和由驾驶员进行的加速器的动作计算目标输出转矩的目标输出转矩运算机构（132） 目标点火正时计算装置，用于基于发动机（1）的运行状态来计算目标点火正时; 实际输出转矩计算装置（134），用于根据发动机转速，充气效率，目标点火正时，空燃比和燃料的总热值来计算发动机（1）的实际输出转矩 ; 以及目标进气量计算装置，用于基于充电效率和实际输出转矩来计算充电效率 - 转矩转换系数，并且基于目标输出转矩和充电效率 - 根据目标充电效率来计算目标进气量。 在燃料特性作为信息加载的同时执行发动机的转矩控制，因此以高精度实现用于实现目标输出转矩的发动机控制量。