公开(公告)号：US08092663B2

公开(公告)日：2012-01-10

申请号：US12388625

申请日：2009-02-19

申请人： Satoshi Hada ,  Katsuhide Akimoto ,  Shoichiro Emmei ,  Keigo Mizutani ,  Shinya Teranishi

发明人： Satoshi Hada ,  Katsuhide Akimoto ,  Shoichiro Emmei ,  Keigo Mizutani ,  Shinya Teranishi

IPC分类号： G01N27/41

CPC分类号： G01N27/4071 ,  G01N27/4065

摘要： A gas sensor control device is disclosed as including a sensor cell having a negative terminal, to which a current-voltage converter is connected, and a differential amplifier is connected to the current-voltage converter to provide a current measured result applied to a microcomputer. The current-voltage converter has an opposite-to-sensor terminal to which another differential amplifier is connected. A sensor-side terminal of the current-voltage converter and another differential amplifier is electrically connected to each other via an electric pathway having a sensor-current flow disabling pathway in which a switch circuit is provided. Closing the switch circuit allows a potential difference between both terminals of the current-voltage converter is zeroed. With the switch circuit closed, the microcomputer calculates an element current correcting value, while detecting an electromotive force of the sensor cell based on which a failure is determined.

摘要翻译： 公开了一种气体传感器控制装置，其包括具有负极端子的传感器单元，电流 - 电压转换器连接到该负极端子，并且差分放大器连接到电流 - 电压转换器以提供施加到微型计算机的当前测量结果。 电流 - 电压转换器具有与传感器相对的另一个差分放大器连接的端子。 电流 - 电压转换器的传感器侧端子和另一个差分放大器经由具有传感器电流流动禁止通路的电路相互电连接，在该通路中设置开关电路。 闭合开关电路允许电流 - 电压转换器的两个端子之间的电位差为零。 在开关电路闭合的情况下，微机计算元件电流校正值，同时检测确定了故障的传感器单元的电动势。

公开(公告)号：US20100051458A1

公开(公告)日：2010-03-04

申请号：US12549910

申请日：2009-08-28

申请人： Shinya TERANISHI ,  Keigo Mizutani ,  Takashi Hibino ,  Atsuko Tomita

发明人： Shinya TERANISHI ,  Keigo Mizutani ,  Takashi Hibino ,  Atsuko Tomita

IPC分类号： G01N27/26

CPC分类号： G01N27/4074 ,  G01N27/4071

摘要： A carbon quantity detecting sensor for continuously detecting a carbon quantity of measuring gases with increased precision using a simplifier structure is disclosed. The sensor includes at least a proton conductive body composed of a solid electrolyte body having a proton conductivity, an electrode pair composed of a measuring electrode and a reference electrode formed on the proton conductive body at opposing surfaces thereof respectively, and a power source for applying at least one of a given current or a given voltage across the electrode pair. The measuring gases electrode is exposed to the measuring gases and the reference electrode is isolated from the measuring gases. This enables the carbon quantity of measuring gases to be detected with increased precision for a long period of time without causing a carbon component to accumulate on a surface of the measuring electrode due to an electrochemical reaction.

摘要翻译： 公开了一种碳量检测传感器，用于使用简化结构连续检测测量气体的碳量增加的精度。 所述传感器至少包括质子传导体，所述质子传导体由具有质子传导性的固体电解质体，由测量电极和在其相对表面上形成在所述质子传导体上的参考电极组成的电极对，以及用于施加的电源 跨过电极对的给定电流或给定电压中的至少一个。 测量气体电极暴露于测量气体，参考电极与测量气体隔离。 这使得能够长时间地以更高的精度检测测量气体的碳量，而不会由于电化学反应而使碳成分积聚在测量电极的表面上。

公开(公告)号：US07087151B2

公开(公告)日：2006-08-08

申请号：US10361023

申请日：2003-02-10

申请人： Keigo Mizutani ,  Kazuhiko Yoshida ,  Hidetaka Hayashi ,  Masayoshi Iwase ,  Kazuo Tojima

发明人： Keigo Mizutani ,  Kazuhiko Yoshida ,  Hidetaka Hayashi ,  Masayoshi Iwase ,  Kazuo Tojima

IPC分类号： G01N27/407 ,  G01N27/41

CPC分类号： H01M8/0444 ,  G01N27/4074 ,  G01N33/005 ,  H01M8/04097 ,  H01M8/04126 ,  H01M8/04783 ,  H01M8/0618 ,  H01M10/48 ,  H01M10/52 ,  H01M16/00

摘要： A hydrogen sensor which may be employed in an overcharge/overdischarge detector for a battery and a hydrogen leakage detector for a fuel cell is provided. The hydrogen sensor includes a sensor element and a diffused resistor member. The gas to be measured passes through the diffused resistor member and reaches the sensor element. The sensor element outputs a signal indicative of the concentration of hydrogen contained in the gas as a function of a decrease in concentration of oxygen contained in the gas arising from reaction of the hydrogen on the oxygen. The diffused resistor member is so designed that speeds of diffusion of the hydrogen and the oxygen when passing through the diffused resistor member are different from each other for increasing the sensitivity of measurement of the concentration of hydrogen.

公开(公告)号：US07073320B2

公开(公告)日：2006-07-11

申请号：US10841493

申请日：2004-05-10

申请人： Michiyasu Moritsugu ,  Takanao Tomura ,  Keigo Mizutani ,  Daisuke Makino ,  Eiichi Kurokawa

发明人： Michiyasu Moritsugu ,  Takanao Tomura ,  Keigo Mizutani ,  Daisuke Makino ,  Eiichi Kurokawa

IPC分类号： F01N3/00

CPC分类号： G01N27/4175 ,  G01N33/007

摘要： A fault detecting apparatus for a gas concentration sensor is provided. The apparatus includes a storage device and a fault detecting circuit. The storage device stores therein fault detectable conditions in which preselected different types of faults of the gas concentration sensor are allowed to be detected, respectively. The fault detecting circuit works to detect a selected one of the faults stored in said storage device. When one of the fault detectable conditions is encountered during operation of the gas concentration sensor, the fault detecting circuit initiates detection of a corresponding one of the faults based on an output of the gas concentration sensor, thereby enabling the fault detecting circuit to identify the type of one of the faults to be detected correctly.

摘要翻译： 提供了一种用于气体浓度传感器的故障检测装置。 该装置包括存储装置和故障检测电路。 存储装置存储其中分别允许检测气体浓度传感器的预选的不同类型的故障的故障可检测条件。 故障检测电路用于检测存储在所述存储设备中的选定故障之一。 当在气体浓度传感器运行期间遇到故障可检测条件之一时，故障检测电路基于气体浓度传感器的输出启动对应的一个故障的检测，从而使故障检测电路能够识别该类型 其中一个故障正确检测。

公开(公告)号：US07351318B2

公开(公告)日：2008-04-01

申请号：US10317162

申请日：2002-12-12

申请人： Toru Katafuchi ,  Keigo Mizutani

发明人： Toru Katafuchi ,  Keigo Mizutani

IPC分类号： G01N27/407

CPC分类号： G01N27/4071

摘要： A gas sensing element has at least a sensor cell consisting of a measured gas side electrode positioned in a measured gas chamber, a reference electrode being operative association with the measured gas side electrode, and a solid electrolytic substrate having surfaces on which the measured gas side electrode and the reference electrode are formed. The measured gas side electrode of the sensor cell contains at least one additive selected from the group consisting of Au, Ag, Cu, and Pb by an amount of 0.01 wt % to 2.0 wt % (external wt %) when an overall amount of the measured gas side electrode is 100 wt %.

摘要翻译： 气体传感元件至少具有由位于测量气体室中的测量气体侧电极组成的传感器单元，参考电极与所测量的气体侧电极可操作地关联，固体电解质基板具有表面，测量气体侧 电极和参考电极。 传感器单元的测量气体侧电极含有选自Au，Ag，Cu和Pb中的至少一种添加量为0.01重量％至2.0重量％（外部重量％）的添加剂，当总量为 测定气体侧电极为100重量％。

公开(公告)号：US06740217B2

公开(公告)日：2004-05-25

申请号：US10178711

申请日：2002-06-25

申请人： Keigo Mizutani ,  Eiichi Kurokawa ,  Masahiro Taguchi ,  Daisuke Makino

发明人： Keigo Mizutani ,  Eiichi Kurokawa ,  Masahiro Taguchi ,  Daisuke Makino

IPC分类号： G01N27407

CPC分类号： G01N27/419

摘要： A gas sensor consists of a pump cell, a monitor cell, and a sensor cell. The sensor cell is supplied with power to produce a sensor cell current. The monitor cell is supplied with power to produce a monitor cell current. A sensor cell and a monitor cell current detector are disposed between a sensor cell electrode exposed to a gas cavity and a sensor cell power supply and between a monitor cell electrode exposed to the gas cavity and a monitor cell power supply, thereby enabling the sensor cell current and the monitor cell current to be measured without addition of electric noises arising from current components flowing from the monitor cell to the sensor cell and vice versa.

摘要翻译： 气体传感器由泵电池，监视器单元和传感器单元组成。 传感器单元被供电以产生传感器电池电流。 监视器单元被供电以产生监视器电池电流。 传感器单元和监视单元电流检测器设置在暴露于气体腔的传感器单元电极和传感器单元电源之间以及暴露于气体腔的监视单元电极与监视单元电源之间，从而使传感器单元 电流和监测单元电流，而不增加从监测单元流向传感器单元的电流分量产生的电噪声，反之亦然。

公开(公告)号：US5676811A

公开(公告)日：1997-10-14

申请号：US789709

申请日：1997-01-27

申请人： Daisuke Makino ,  Hisayoshi Ohta ,  Keigo Mizutani ,  Masataka Naito ,  Masanori Yamada ,  Masahiro Shibata ,  Hiromi Sano

发明人： Daisuke Makino ,  Hisayoshi Ohta ,  Keigo Mizutani ,  Masataka Naito ,  Masanori Yamada ,  Masahiro Shibata ,  Hiromi Sano

IPC分类号： G01N27/419 ,  G01N27/26

CPC分类号： G01N27/419

摘要： An air-fuel ratio detecting element is composed of an oxygen pump portion and an oxygen sensor portion which are provided on a single solid electrolyte sheet, a heating element, and a spacer. The oxygen pump portion is composed of a pair first of electrodes provided on opposite sides of the solid electrolyte sheet, and a communication hole which is formed through the solid electrolyte sheet and the electrodes. Electrodes are disposed on the solid electrolyte sheet on the same side as the second electrode, whereby the oxygen sensor portion is formed. The spacer has an opening and a slit-like opening. The heating element 4, the spacer, and the solid electrolyte sheet are stacked from bottom to top, and then the stacked assembly is baked. In this case, they are stacked such that the opening faces the first electrodes and the second electrode. By disposing the oxygen pump portion and the oxygen sensor portion on the same solid electrolyte sheet, structure can be made simpler compared with a conventional air-fuel ratio detecting element in which a solid electrolyte sheet is used for each of an oxygen pump portion and an oxygen sensor portion.

摘要翻译： 空燃比检测元件由设置在单个固体电解质片，加热元件和间隔件上的氧泵部分和氧传感器部分组成。 氧泵部由设置在固体电解质片的相对侧上的一对电极和通过固体电解质片和电极形成的连通孔构成。 电极与第二电极位于同一侧的固体电解质片上，形成氧传感器部。 间隔件具有开口和狭缝状开口。 从底部到顶部堆叠加热元件4，间隔件和固体电解质片，然后烘烤堆叠的组件。 在这种情况下，它们堆叠成使得开口面向第一电极和第二电极。 通过将氧泵部和氧传感器部配置在相同的固体电解质片上，与以往的空氧燃料比检测元件相比，可以使结构更简单，其中使用固体电解质片作为氧泵部和 氧传感器部分。

公开(公告)号：US08715474B2

公开(公告)日：2014-05-06

申请号：US13411743

申请日：2012-03-05

申请人： Keigo Mizutani ,  Takehiro Watarai ,  Norikazu Kajiyama

发明人： Keigo Mizutani ,  Takehiro Watarai ,  Norikazu Kajiyama

IPC分类号： G01N27/407

CPC分类号： G01N27/4074

摘要： A gas sensor element has a first cell, a second cell, and a solid electrolyte layer having proton conductivity commonly used by the first cell and the second cell. The first cell has a first cathode and a first anode exposed to the target detection gas containing hydrogen atoms. The second cell has a second anode, a second cathode, and a shield layer with which the second anode is covered. A voltage is supplied to the first and second cells. A gas concentration of the target detection gas is calculated on the basis of a difference between a current of the first cell and a current of the second cell because the current in the first cell is a sum of proton conductivity current and an electron conductivity current. The current in the second cell is an electron conductive current only.

摘要翻译： 气体传感器元件具有第一电池，第二电池和具有通常由第一电池和第二电池使用的质子传导的固体电解质层。 第一单元具有暴露于含有氢原子的目标检测气体的第一阴极和第一阳极。 第二单元具有第二阳极，第二阴极以及覆盖第二阳极的屏蔽层。 向第一和第二电池提供电压。 基于第一单元电流和第二单元电流之间的差来计算目标检测气体的气体浓度，因为第一单元中的电流是质子传导电流和电子传导电流之和。 第二电池中的电流仅为电子导电电流。

公开(公告)号：US20110081276A1

公开(公告)日：2011-04-07

申请号：US12898231

申请日：2010-10-05

申请人： Shinya Teranishi ,  Hiroshi Matsuoka ,  Keigo Mizutani ,  Takashi Sawada ,  Hideaki Itoh ,  Takashi Araki ,  Kensuke Takizawa

发明人： Shinya Teranishi ,  Hiroshi Matsuoka ,  Keigo Mizutani ,  Takashi Sawada ,  Hideaki Itoh ,  Takashi Araki ,  Kensuke Takizawa

IPC分类号： G01N27/00

CPC分类号： G01N33/0036 ,  F23N5/003 ,  Y02A50/25

摘要： A particulate sensing element that detects a concentration of electrically conductive particulates PM in a gas to be measured includes a sensing portion exposed to the gas to be measured in which a pair of sensing electrodes that face each other formed with a predetermined gap therebetween on a surface of an electrically insulating heat resistant base plate, and a heating element that heats the sensing portion to a predetermined temperature, wherein a catalyst layer that can oxidize the electrically conductive particulates PM is formed at least on a part of a portion except the sensing portion exposed to the gas to be measured.

摘要翻译： 检测待测气体中的导电颗粒物PM的浓度的微粒感测元件包括暴露于待测气体的感测部分，其中在表面上形成有预定间隙的一对彼此相对的感测电极 电绝缘耐热基板和将感测部分加热到预定温度的加热元件，其中可以氧化导电颗粒PM的催化剂层至少在暴露于感测部分之外的部分的一部分上形成 到要测量的气体。

公开(公告)号：US20070084723A1

公开(公告)日：2007-04-19

申请号：US11580305

申请日：2006-10-13

申请人： Keigo Mizutani ,  Daisuke Makino ,  Kazunori Suzuki

发明人： Keigo Mizutani ,  Daisuke Makino ,  Kazunori Suzuki

IPC分类号： G01N27/26

CPC分类号： G01N27/4075

摘要： A gas sensor element is designed to determine the concentration of a selected component contained in gas and includes a sensor cell. The sensor cell is equipped with two electrodes one of which is exposed to a gas chamber into which the gas flows from outside the gas sensor element. The electrodes connect with leads extending to external terminals exposed to the atmospheric air. One of the leads connecting with one of the electrodes exposed to the gas chamber is made of material which includes a mixture of a metallic composition and a ceramic composition and contains 7% or less by weight of the ceramic composition based on a total weight of the mixture. This results in a decrease in porosity of the lead, which reduces the intrusion of oxygen gas into the gas chamber, thereby enhancing the accuracy in determining the concentration of the selected component of the gas.

摘要翻译： 设计气体传感器元件以确定气体中包含的选定组分的浓度并且包括传感器单元。 传感器单元配备有两个电极，其中一个电极暴露于气体从气体传感器元件外部流动的气体室中。 电极连接到延伸到暴露于大气中的外部端子的引线。 与暴露于气室的电极之一连接的引线中的一个由包括金属组合物和陶瓷组合物的混合物的材料制成，并且基于所述陶瓷组合物的总重量含有7重量％或更少的陶瓷组合物 混合物。 这导致铅的孔隙率降低，这减少了氧气进入气室的侵入，从而提高了确定气体选定组分浓度的准确性。