公开(公告)号：US07959863B2

公开(公告)日：2011-06-14

申请号：US11834887

申请日：2007-08-07

申请人： Takashi Yamamoto ,  Yoshikuni Sato ,  Takeo Sasanuma ,  Akihiro Yoshida

发明人： Takashi Yamamoto ,  Yoshikuni Sato ,  Takeo Sasanuma ,  Akihiro Yoshida

IPC分类号： G01N15/06 ,  G01N25/00 ,  G01F23/00

CPC分类号： G01F23/268 ,  F01N11/00 ,  F01N2550/05 ,  F01N2900/1818

摘要： A liquid state detecting sensor for detecting a state of a liquid including a liquid concentration detecting element, a holder member, and an enclosing member as defined herein, wherein the holder member has a configuration in which respective portions of a lower end surface facing the enclosed region are located higher than or at a same height as a lowest hole periphery at the rim of the element holding hole from which the detecting element protrudes, and at least one of circulation holes formed in the enclosing member is a bubble-discharging hole which has an upper end located higher than the lowest hole periphery and a lower end located lower than a surface peripheral edge of the lower end surface.

摘要翻译： 一种用于检测包括如本文所定义的液体浓度检测元件，保持器构件和封闭构件的液体的状态的液体状态检测传感器，其中保持器构件具有这样的构造，其中下端表面的各个部分面向封闭 位于与检测元件突出的元件保持孔的边缘处的最低孔周边高度或相同的高度，并且形成在封闭构件中的循环孔中的至少一个是具有气泡排出孔的气泡排出孔， 上端位于比最低孔周边高的位置，下端位于比下端面的表面周缘低的位置。

公开(公告)号：US08137625B2

公开(公告)日：2012-03-20

申请号：US12016580

申请日：2008-01-18

申请人： Takeo Sasanuma ,  Yoshikuni Sato ,  Akihiro Yoshida

发明人： Takeo Sasanuma ,  Yoshikuni Sato ,  Akihiro Yoshida

IPC分类号： G01N33/00

CPC分类号： G01N27/18 ,  F01N3/2066 ,  F01N11/00 ,  F01N2610/14 ,  F01N2610/148 ,  F01N2900/1818 ,  Y10T436/171538

摘要： A urea sensor includes a detecting portion which, in use, is immersed in a liquid accommodated in a urea solution tank for detecting the thermal conductivity of the liquid to detect whether the liquid accommodated in the urea solution tank is an aqueous urea solution; and an enclosing member enclosing a periphery of the detecting portion and including one or more vents penetrating the enclosing member. At least one of the vents is a lower vent being of a configuration and size such that a first hypothetical circle having a diameter of not less than 3.5 mm can be wholly contained within the lower vent. At least a portion of the lower vent is positioned below the detecting portion when the urea sensor is positioned for installation in the urea solution tank.

摘要翻译： 尿素传感器包括检测部，其在使用中浸渍在容纳在尿素溶液罐中的液体中，用于检测液体的导热性，以检测容纳在尿素溶液罐中的液体是否为尿素水溶液; 以及封闭构件，其围绕所述检测部分的周边并且包括穿过所述封闭构件的一个或多个通气口。 通气口中的至少一个是具有如下构造和尺寸的下通气口，使得具有不小于3.5mm直径的第一假想圆可以完全包含在下通风口内。 当尿素传感器被定位用于安装在尿素溶液箱中时，下部通风口的至少一部分位于检测部分的下方。

公开(公告)号：US20080038153A1

公开(公告)日：2008-02-14

申请号：US11834887

申请日：2007-08-07

申请人： Takashi YAMAMOTO ,  Yoshikuni Sato ,  Takeo Sasanuma ,  Akihiro Yoshida

发明人： Takashi YAMAMOTO ,  Yoshikuni Sato ,  Takeo Sasanuma ,  Akihiro Yoshida

IPC分类号： G01K13/00 ,  B01J19/00

CPC分类号： G01F23/268 ,  F01N11/00 ,  F01N2550/05 ,  F01N2900/1818

摘要： A liquid state detecting sensor for detecting a state of a liquid including a liquid concentration detecting element, a holder member, and an enclosing member as defined herein, wherein the holder member has a configuration in which respective portions of a lower end surface facing the enclosed region are located higher than or at a same height as a lowest hole periphery at the rim of the element holding hole from which the detecting element protrudes, and at least one of circulation holes formed in the enclosing member is a bubble-discharging hole which has an upper end located higher than the lowest hole periphery and a lower end located lower than a surface peripheral edge of the lower end surface.

摘要翻译： 一种用于检测包括如本文所定义的液体浓度检测元件，保持器构件和封闭构件的液体的状态的液体状态检测传感器，其中保持器构件具有这样的构造，其中下端表面的各个部分面向封闭 位于与检测元件突出的元件保持孔的边缘处的最低孔周边高度或相同的高度，并且形成在封闭构件中的循环孔中的至少一个是具有气泡排出孔的气泡排出孔， 上端位于比最低孔周边高的位置，下端位于比下端面的表面周缘低的位置。

公开(公告)号：US20070125663A1

公开(公告)日：2007-06-07

申请号：US11605257

申请日：2006-11-29

申请人： Takeo Sasanuma ,  Yoshikuni Sato ,  Yuki Mizuno

发明人： Takeo Sasanuma ,  Yoshikuni Sato ,  Yuki Mizuno

IPC分类号： G01N33/18 ,  G01N17/04

CPC分类号： G01N27/14 ,  F01N3/2066 ,  F01N11/00 ,  F01N2610/02 ,  F01N2900/1818

摘要： A liquid-condition detection element is provided which exhibits good sensitivity while having appropriate strength. The detector element forms part of a liquid-condition detection sensor in which breakage of the detection element is combated and which can accurately detect the condition of liquid. The detection element includes first and second ceramic insulating layers formed by simultaneous firing and a heat-generating resistor sealed in a liquid tight manner between the insulating layers. The resistor has a resistance varying with temperature, and is, in use, immersed in liquid. The first insulating layer is thinner than the second layer. A detection section of the liquid-condition detection sensor detects the condition of a liquid (e.g., the concentration of a particular component in the liquid) on the basis of an output signal from the heat-generating resistor.

摘要翻译： 提供了具有良好的灵敏度同时具有适当强度的液体状态检测元件。 检测器元件形成液体状态检测传感器的一部分，其中检测元件的断裂被打击并且可以精确地检测液体的状况。 检测元件包括通过同时烧制形成的第一和第二陶瓷绝缘层和在绝缘层之间以液密方式密封的发热电阻器。 电阻器具有随温度变化的电阻，并且在使用中浸没在液体中。 第一绝缘层比第二层薄。 液体状态检测传感器的检测部根据来自发热电阻器的输出信号来检测液体的状态（例如液体中特定成分的浓度）。

公开(公告)号：US07665347B2

公开(公告)日：2010-02-23

申请号：US11594887

申请日：2006-11-09

申请人： Takeo Sasanuma ,  Yoshikuni Sato

发明人： Takeo Sasanuma ,  Yoshikuni Sato

IPC分类号： G01N25/00

CPC分类号： F01N3/2066 ,  F01N2560/021 ,  F01N2610/1406 ,  G01N25/20 ,  Y02T10/24

摘要： A liquid state detecting apparatus including a detecting element which outputs a signal associated with a concentration of a particular component of a liquid contained in a liquid container; an abnormality determination unit which determines whether or not the liquid is in a particular abnormal state based on the output signal of the detecting element, a level detecting part which outputs a signal according to a level of the liquid contained in the liquid container; and a static state determination unit which determines whether or not the liquid in the liquid container is in a static state based on the output signal from the level detecting part, wherein the determination made by the static state determination unit is reflected in the determination made by the abnormality determination unit.

摘要翻译： 一种液体状态检测装置，包括：检测元件，其输出与容纳在液体容器中的液体的特定成分的浓度相关联的信号; 异常判定单元，其基于检测元件的输出信号来判定液体是否处于特定异常状态;电平检测部，其根据容纳在液体容器中的液体的液面输出信号; 以及静止状态判定单元，其基于来自所述电平检测部的输出信号来判定所述液体容器内的液体是否处于静止状态，其中，由所述静止状态判定单元进行的判定反映在由 异常判定单元。

公开(公告)号：US07574900B2

公开(公告)日：2009-08-18

申请号：US11482026

申请日：2006-07-07

申请人： Takeo Sasanuma ,  Yoshikuni Sato ,  Shunsuke Tamura ,  Shinji Kumazawa ,  Hisashi Sasaki

发明人： Takeo Sasanuma ,  Yoshikuni Sato ,  Shunsuke Tamura ,  Shinji Kumazawa ,  Hisashi Sasaki

IPC分类号： G01N25/00

CPC分类号： G01N25/18

摘要： A liquid state detection sensor in which temperature information of a urea aqueous solution is obtained on the basis of a voltage value acquired after the start of energization of a heating resistor corresponding to a resistance value of the heating resistor (S1-S6). Damage to the heating resistor is prevented by suspending the energization if the thus-obtained temperature is lower than or equal to the freezing point (S7: yes and S8). If the temperature is higher than the freezing point (S7: no), a voltage value corresponding to a resistance of the heating resistor after a lapse of 700 ms (S10 and S11) and a urea concentration of the urea aqueous solution are determined from a difference ΔV from the previously acquired voltage value. A more accurate urea concentration can be detected by making a correction using the previously obtained temperature information of the urea aqueous solution (S13-S18).

摘要翻译： 液状态检测传感器，其中，根据对应于加热电阻器的电阻值的加热电阻器通电开始后获得的电压值，获得尿素水溶液的温度信息（S1〜S6）。 如果这样得到的温度低于或等于冰点，则可以通过暂停通电来阻止加热电阻器的损坏（S7：是和S8）。 如果温度高于凝固点（S7：否），则在从700毫秒（S10和S11）起经由加热电阻器的电阻值与尿素水溶液的尿素浓度之间的电压值由 差值DeltaV与先前获得的电压值。 可以通过使用先前获得的尿素水溶液的温度信息进行校正来检测更准确的尿素浓度（S13-S18）。

公开(公告)号：US20050285608A1

公开(公告)日：2005-12-29

申请号：US11136649

申请日：2005-05-25

申请人： Yoshikuni Sato ,  Takashi Yamamoto ,  Takeo Sasanuma

发明人： Yoshikuni Sato ,  Takashi Yamamoto ,  Takeo Sasanuma

IPC分类号： G01F23/26 ,  G01N27/22 ,  G01N33/28 ,  G01R27/26

CPC分类号： G01N27/226 ,  G01F23/268

摘要： An electrostatic capacity type liquid state detecting sensor includes an outer tubular electrode, and an inner electrode disposed within the outer tubular electrode and having an insulation layer at an outer surface portion to be brought into contact with liquid contained in a container for detection of a state of the liquid, wherein the thickness of the insulation layer is less than 500 μm and not less than 100 μm.

摘要翻译： 静电容量型液态检测传感器包括外管状电极和设置在外管状电极内的内电极，并且在外表面部分具有与包含在用于检测状态的容器中的液体接触的绝缘层 的液体，其中绝缘层的厚度小于500μm且不小于100μm。

公开(公告)号：US08017080B2

公开(公告)日：2011-09-13

申请号：US11594764

申请日：2006-11-09

申请人： Takeo Sasanuma ,  Yoshikuni Sato

发明人： Takeo Sasanuma ,  Yoshikuni Sato

IPC分类号： G01N25/00

CPC分类号： G01N25/18 ,  F01N3/2066 ,  F01N11/00 ,  F01N2550/05 ,  F01N2610/02 ,  F01N2610/10 ,  F01N2900/1814 ,  F01N2900/1818 ,  Y02T10/24 ,  Y02T10/47

摘要： A liquid state detecting apparatus including a detecting element having a heating resistor which generates heat when energized and being disposed in a liquid container for containing a liquid, the apparatus calculating a first difference between a first corresponding value corresponding to a first resistance of the heating resistor acquired after energization of the heating resistor is started and a second corresponding value corresponding to a second resistance of the heating resistor acquired after the heating resistor is energized for a predetermined detection time and obtaining a first concentration of a particular component included in the liquid, the first concentration being associated with the first difference, the apparatus including: an abnormality determination unit, a determination concentration acquiring unit, a concentration difference calculation unit, and a static state determination unit, all as defined herein.

摘要翻译： 一种液体状态检测装置，包括具有加热电阻器的检测元件，所述加热电阻器在通电时产生热量并且被布置在用于容纳液体的液体容器中，所述装置计算对应于所述加热电阻器的第一电阻的第一对应值 开始加热电阻器的通电后获取的第一对应值，并且在加热电阻器通电预定的检测时间之后获得对应于加热电阻器的第二电阻的第二对应值，并获得包括在液体中的特定成分的第一浓度， 所述第一浓度与所述第一差异相关联，所述装置包括：异常确定单元，确定浓度获取单元，浓度差计算单元和静态状态确定单元，全部如本文所定义。

公开(公告)号：US07712363B2

公开(公告)日：2010-05-11

申请号：US11994191

申请日：2006-06-30

申请人： Takeo Sasanuma ,  Yoshikuni Sato ,  Takashi Yamamoto

发明人： Takeo Sasanuma ,  Yoshikuni Sato ,  Takashi Yamamoto

IPC分类号： G01F23/00

CPC分类号： G01F23/268 ,  F01N3/206 ,  F01N2610/02 ,  F01N2610/14 ,  G01F23/266

摘要： A liquid state detecting sensor is provided in which a level detecting unit for detecting the level of a liquid and a concentration detecting unit for detecting the concentration of a particular component contained in the liquid are integrated.In a liquid state detecting sensor 100 capable of measuring the level and a urea concentration of a urea aqueous solution, a level detecting unit 70 and a liquid property detecting unit 30 are connected in an insulated state. An outer cylinder electrode 10 and an inner electrode 20 for forming the level detecting unit 70 form a capacitor, and level detection is performed on the basis of the electrostatic capacity which changes in response to the level of the urea aqueous solution which is present therebetween. A holder 120 for holding a ceramic heater 110 is fitted to a leading end portion 21 of the inner electrode 20, and the holder 120 is supported inside a leading end portion 11 of the outer cylinder electrode 10 by a rubber bushing 80. Further, the urea concentration is determined by a liquid property detecting circuit unit of a circuit board 60 by energizing a heat generating resistor pattern provided on the ceramic heater 110 for a fixed time duration and on the basis of a voltage value corresponding to a resistance value of the heat generating resistor pattern obtained at this time.

摘要翻译： 提供一种液体状态检测传感器，其中集成有用于检测液位的电平检测单元和用于检测包含在液体中的特定成分的浓度的浓度检​​测单元。 在能够测量尿素水溶液的水平和尿素浓度的液状态检测传感器100中，电平检测单元70和液体特性检测单元30以绝缘状态连接。 用于形成电平检测单元70的外筒电极10和内电极20形成电容器，并且基于响应于存在于其间的尿素水溶液的水平而变化的静电电容进行电平检测。 用于保持陶瓷加热器110的保持器120装配到内部电极20的前端部21，并且保持器120通过橡胶衬套80被支撑在外部气缸电极10的前端部11内。此外， 尿素浓度由电路板60的液体特性检测电路单元确定，通过对设置在陶瓷加热器110上的发热电阻图案施加一定的持续时间，并且基于对应于热量的电阻值的电压值 产生此时获得的电阻图案。

公开(公告)号：US20070169544A1

公开(公告)日：2007-07-26

申请号：US11653252

申请日：2007-01-16

申请人： Takashi Yamamoto ,  Takeo Sasanuma ,  Yoshikuni Sato

发明人： Takashi Yamamoto ,  Takeo Sasanuma ,  Yoshikuni Sato

IPC分类号： G01N33/00

CPC分类号： G01N25/005 ,  F01N3/206 ,  F01N2610/02 ,  G01F23/268

摘要： A liquid-condition detection sensor (1) including a sensor element (51), at least a portion of which contacts a urea aqueous solution; connection terminals (52) fixedly attached to the sensor element (51); connection cables (53) which electrically communicate with the concentration sensor element (51) via the connection terminals (52); an inner tube (42) which holds the concentration sensor element (51) at a distal end portion (421) by use of a holder member (55) and surrounds a portion of the connection cables (53) and the entire connection terminals (52); and a separator formed from a material having rubberlike elasticity (54) including a terminal-inner-tube-insulating portion (542) which intervenes between the connection terminals (52) and the inner tube (42) to thereby insulate the connection terminals (52) and the inner rube (42) from one another.

摘要翻译： 一种液体状态检测传感器（1），其包括至少一部分与尿素水溶液接触的传感器元件（51） 固定在传感器元件（51）上的连接端子（52）; 连接电缆（53），经由连接端子（52）与浓度传感器元件（51）电连通; 通过使用保持器构件（55）将浓度传感器元件（51）保持在远端部分（421）处并且包围连接电缆（53）的一部分和整个连接端子（52）的内管（42） ）; 以及由具有橡胶弹性的材料（54）形成的隔板，所述隔板包括介于所述连接端子（52）和所述内管（42）之间的端子 - 内管绝缘部分（542），从而使所述连接端子 ）和内部微波（42）。