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公开(公告)号：US4981369A
公开(公告)日：1991-01-01
申请号：US420600
申请日：1989-10-12
申请人： Akira Kumada , Eiichi Takata , Michihiro Murata
发明人： Akira Kumada , Eiichi Takata , Michihiro Murata
摘要： In a frost and dew sensor composed of two thermosensitive resistors, a power source and an arithmetic circuit, frost or dew is detected from the change of a differential temperature between the two thermosensitive resistors as two different currents from the power source are supplied to the respective thermosensitive resistors. In an alternative form, the sensor has a single thermosensitive resistor, which is energized as two different currents are alternately supplied from the power source so that frost or dew is detected by comparison of the time-lags between the two outputs from the thermosensitive resistor.
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公开(公告)号：US5000579A
公开(公告)日：1991-03-19
申请号：US553740
申请日：1990-07-18
申请人： Akira Kumada , Eiichi Takata , Michihiro Murata
发明人： Akira Kumada , Eiichi Takata , Michihiro Murata
摘要： In a frost and dew sensor composed of two thermosensitive resistors, a power source and an arithmetic circuit, frost or dew is detected from the change of a differential temperature between the two thermosensitive resistors as two different currents from the power source are supplied to the respective thermosensitive resistors. In an alternative form, the sensor has a single thermosensitive resistor, which is energized as two different currents are alternately supplied from the power source so that frost or dew is detected by comparison of the time-lags between the two outputs from the thermosensitive resistor.
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公开(公告)号：US5187444A
公开(公告)日：1993-02-16
申请号：US383412
申请日：1989-07-20
申请人： Akira Kumada , Eiichi Takata , Michihiro Murata
发明人： Akira Kumada , Eiichi Takata , Michihiro Murata
CPC分类号： G01D5/24 , G01F23/265 , G01F23/268 , G01N27/221 , G01P13/0006
摘要： A liquid sensor for detecting, in a non-contact manner, whether an electrolyte solution is flowing through a pipeline. A pair of electrodes, on which an AC voltage is impressed, are mounted on the outer surface of a pipeline formed of a material having a high dielectric constant, such as a ceramic, and a discrimination between the presence and the absence of the electrolyte solution in the pipeline is made based on variations in capacitance between the electrodes. In the presence of the electrolyte solution flowing through the pipeline, the capacitance between the electrodes is high because of the conductivity of the electrolyte solution. In the absence of the electrolyte solution flowing through the pipeline, the capacitance is determined by air and is, therefore, low. Since the electrodes are maintained in a non-contact relation with the electrolyte solution, degradation of characteristics due to corrosion is obviated. The absence of intermediates which, if present, would cause a lowering in detection sensitivity ensures an extremely high accuracy of detection.
摘要翻译： 一种用于以非接触的方式检测电解质溶液是否流过管道的液体传感器。 在其上施加有交流电压的一对电极安装在由具有高介电常数的材料（例如陶瓷）形成的管道的外表面上，并且鉴别电解质溶液的存在和不存在 在管道中基于电极之间的电容的变化进行。 在流过管道的电解质溶液的存在下，由于电解质溶液的导电性，电极之间的电容很高。 在没有电解质溶液流过管道的情况下，电容由空气确定，因此是低的。 由于电极与电解质溶液保持非接触关系，所以消除了由于腐蚀引起的特性劣化。 如果不存在中间体（如果存在）将导致检测灵敏度降低，则确保极高的检测精度。
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公开(公告)号：US5226313A
公开(公告)日：1993-07-13
申请号：US890286
申请日：1992-05-26
申请人： Michihiro Murata , Akira Kumada , Kenji Matsuo , Chitaka Ochiai , Shigeo Yamazaki , Masaaki Kimura , Naoyuki Kohriya
发明人： Michihiro Murata , Akira Kumada , Kenji Matsuo , Chitaka Ochiai , Shigeo Yamazaki , Masaaki Kimura , Naoyuki Kohriya
IPC分类号： A61B5/20
CPC分类号： A61B5/14507 , A61B5/208
摘要： A body fluid excretion volume measurement apparatus for medical application. The apparatus stores body fluid excreted from patients in a body fluid storage tank and measures the resistance value with a resistance sensor. The resistance value depends on the shape of the body fluid storage tank, and if the tank is columnar, the resistance value is monotonically increasing with respect to the depth of body fluid. The output of the resistance sensor is processed by a measurement part and electric measurement of the body fluid volume stored in the body fluid storage tank is performed automatically.
摘要翻译： 一种用于医疗应用的体液排泄量测量装置。 该装置将从患者体内排泄的体液储存在体液储存罐中，并用电阻传感器测定电阻值。 电阻值取决于体液储罐的形状，如果罐是柱状的，则电阻值相对于体液的深度单调增加。 电阻传感器的输出由测量部件处理，并且自动执行存储在体液储存罐中的体液体积的电量测量。
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公开(公告)号：US4570482A
公开(公告)日：1986-02-18
申请号：US486371
申请日：1983-04-19
申请人： Michihiro Murata , Akira Kumada
发明人： Michihiro Murata , Akira Kumada
IPC分类号： G01F1/20 , G01F23/296 , G01F23/00
CPC分类号： G01F1/20 , G01F23/2967
摘要： A load-sensitive level detecting device for detecting the level of a powder or liquid comprises a piezoelectric vibrator (3), a case (1) which separates the object whose level is to be detected from the latter, the case (1) being formed with an opening (1b), which is closed by an elastic sheet (2) serving as a movable detecting section, whereby when the load exerted by the object is applied to the elastic sheet (2), the vibration of the piezoelectric vibrator (3) is constrained.
摘要翻译： 用于检测粉末或液体的液位的负载敏感度检测装置包括压电振动器（3），将待检测的物体与后者分离的壳体（1），形成壳体（1） 具有由用作可动检测部的弹性片（2）封闭的开口（1b），由此当由物体施加的负荷施加到弹性片（2）时，压电振动器（3）的振动 ）被约束。
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公开(公告)号：US5097248A
公开(公告)日：1992-03-17
申请号：US472700
申请日：1990-01-31
申请人： Akira Kumada , Kenji Matsuo , Michihiro Murata
发明人： Akira Kumada , Kenji Matsuo , Michihiro Murata
IPC分类号： G01F23/24
CPC分类号： G01F23/242 , G01F23/241
摘要： An electrode for level detection includes a detection electrode including conductor portions and resistor portions arranged and formed one after the other in a level change direction. An insulating coating layer is formed on either each conductor portion or each resistor portion. The insulating coating layer may be of a film having a property to repel a liquid to be measured.
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公开(公告)号：US4883366A
公开(公告)日：1989-11-28
申请号：US250738
申请日：1988-09-28
申请人： Katsuji Dohi , Akira Kumada , Michihiro Murata
发明人： Katsuji Dohi , Akira Kumada , Michihiro Murata
IPC分类号： G01K7/34
CPC分类号： G01K7/343
摘要： A temperature sensor includes a capacitor having electrodes between which a dielectric body having its dielectric constant variable depending on the variations of ambient temperature is interposed, and a CR oscillating circuit utilizing the capacitor. The dielectric body is made of a ceramic dielectric material which has a working temperature range in the normal dielectric phase with the dielectric constant thereof having a temperature coefficient ranged between -1,000 ppm/.degree.C. and -10,000 ppm/.degree.C. The ceramic dielectric body is also used as a substrate on which the CR oscillating circuit is formed.
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公开(公告)号：US4523142A
公开(公告)日：1985-06-11
申请号：US424344
申请日：1982-09-27
申请人： Michihiro Murata , Akira Kumada
发明人： Michihiro Murata , Akira Kumada
CPC分类号： G01N27/121 , G01N27/122
摘要： An apparatus for sensing dew and frost, comprising a sensing portion which includes a substrate (1) having less permittivity than ice and includes a pair of electrodes (2, 3) arranged to touch the substrate (1) and further includes a resistive film (4) on the substrate (1) covering the pair of electrodes (2, 3), the impedance between the pair of electrodes (2, 3) changing in three states, or dry, bedewed and frosted states.
摘要翻译： 一种用于感测露水和霜的装置，包括感测部分，其包括具有比冰低的介电常数的衬底（1），并且包括一对电极（2,3），其布置成接触所述衬底（1），并且还包括电阻膜 4）在覆盖一对电极（2,3）的基板（1）上，一对电极（2,3）之间的阻抗以三种状态变化，或干燥，蜕变和磨砂状态。
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公开(公告)号：US4497701A
公开(公告)日：1985-02-05
申请号：US468479
申请日：1983-02-22
申请人： Michihiro Murata , Akira Kumada
发明人： Michihiro Murata , Akira Kumada
CPC分类号： G01N27/121
摘要： A humidity sensitive device, including opposing electrodes formed on an insulating substrate, and a humidity sensitive film formed on the surface of the insulating substrate and at least between the opposing electrodes. The humidity sensitive film is obtained by coating on the surface of the insulating substrate a mixture including a conductive or semiconductive powder, a solid electrolyte powder and an organic polymer cross-linked by a zirconium compound and heating the same.
摘要翻译： 一种湿度敏感装置，包括形成在绝缘基板上的相对电极和形成在绝缘基板的表面上并且至少在相对电极之间的湿敏膜。 湿敏膜通过在绝缘基板的表面上涂覆包含导电或半导体粉末，固体电解质粉末和通过锆化合物交联并加热的有机聚合物的混合物而获得。
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公开(公告)号：US5263370A
公开(公告)日：1993-11-23
申请号：US692726
申请日：1991-04-29
申请人： Michihiro Murata , Akira Kumada , Kenji Matsuo , Shigeo Yamazaki
发明人： Michihiro Murata , Akira Kumada , Kenji Matsuo , Shigeo Yamazaki
CPC分类号： G01F23/242 , A61B5/208 , G01F3/38
摘要： A liquidometer composed of a siphon for emitting a sample liquid stored in a reservoir and a liquid level sensor for sensing the level of the sample remained in the reservoir. The siphon further includes a pair of sensors for counting the number of emission thereof, while the liquid level sensor includes two rows of resistive film with a plurality of sensing elements embedded therein. Outside the liquidometer, there are provided a counter connected to the emission sensor, a level calculator connected to the liquid level sensor, and a calculator coupled to both. A gross amount of the sample liquid having been measured for a period of hours is obtained by adding together a count signal from the counter which represents the quantity of the sample liquid fully stored in the reservoir and a signal from the level counter which represents the liquid level of the remaining sample liquid. Moreover, variations in the quantity of the sample for a predetermined period is computed by the calculator in response to its internal clock.
摘要翻译： 由用于发射存储在储存器中的样品液体的虹吸管和用于感测残留在储存器中的样品水平的液位传感器构成的液体计量器。 虹吸进一步包括一对用于计数其发射次数的传感器，而液位传感器包括两行具有嵌入其中的多个感测元件的电阻膜。 在液位计之外，设置有连接到发射传感器的计数器，连接到液位传感器的液位计算器和耦合到两者的计算器。 通过将来自计数器的计数信号加在一起，该计数信号代表完全储存在贮存器中的样品液体的量和表示液体的液位计数器的信号， 剩余样品液体的水平。 此外，由计算器响应于其内部时钟计算预定时段内的样本量的变化。
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