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    • 86. 发明授权
    • Gas concentration sensor
    • 气体浓度传感器
    • US06418782B1
    • 2002-07-16
    • US09480663
    • 2000-01-11
    • Yoshikuni SatoNoboru IshidaHideki IshikawaTakafumi OshimaYasushi Sato
    • Yoshikuni SatoNoboru IshidaHideki IshikawaTakafumi OshimaYasushi Sato
    • G01N2902
    • G01N29/36G01N29/024G01N2291/011G01N2291/0215G01N2291/0258G01N2291/02809G01N2291/045
    • When a sensor has deteriorated, the propagation time T1′ of a first reflection wave becomes greater than the propagation time T1 of a first reflection wave as measured in a new sensor. If measurement of the concentration of a specific gas is based on the propagation time T1 of the first reflection wave as measured in the new sensor, gas concentration cannot be determined accurately. By contrast, a reflection wave other than the first reflection wave (for example, a second reflection wave) is merely reflected off the surface of the ultrasonic element and is not affected by the internal structure of the ultrasonic element. Therefore, even when the sensor is deteriorated, the propagation time T2, T2′ of the second reflection wave exhibits less variation and is less susceptible to deterioration of the sensor. Therefore, the concentration of a specific gas is determined on the basis of the propagation time of the second reflection wave, which is less susceptible to deterioration of the sensor, instead of the propagation time of the first reflection wave, which is more susceptible to deterioration of the sensor. Thus, gas concentration can be measured accurately.
    • 当传感器恶化时,第一反射波的传播时间T1'变得大于在新传感器中测量的第一反射波的传播时间T1。 如果特定气体的浓度的测定是基于在新传感器中测定的第一反射波的传播时间T1,则不能准确地确定气体浓度。 相反,除了第一反射波(例如,第二反射波)之外的反射波仅仅从超声波元件的表面反射,并且不受超声波元件的内部结构的影响。 因此,即使在传感器劣化的情况下,第二反射波的传播时间T2'T2'变化较小,也不易受传感器劣化的影响。 因此,特定气体的浓度基于不易受传感器劣化的第二反射波的传播时间而不是更容易劣化的第一反射波的传播时间而确定 的传感器。 因此,可以准确测量气体浓度。
    • 87. 发明授权
    • NOx sensor
    • NOx传感器
    • US06224727B1
    • 2001-05-01
    • US09050079
    • 1998-03-30
    • Shigeru MiyataMasashi AndoHiroshi InagakiNoboru IshidaTakafumi Oshima
    • Shigeru MiyataMasashi AndoHiroshi InagakiNoboru IshidaTakafumi Oshima
    • G01N2726
    • G01N27/417G01N27/4074
    • An NOx sensor capable of accurately determining the concentration of NOx contained in a gas to be analyzed (measurement gas) using a simple circuit. The NOx sensor includes a first measurement space and a second measurement space. The first measurement space communicates with the measurement gas via a first diffusion controlling layer, and the second measurement space communicates with the first measurement space via a second diffusion controlling layer. A first pumping current IP1 is controlled such that an output from a Vs cell is used as a reference voltage VC0 to control the amount of oxygen flowing into the second measurement space at a constant level. A constant voltage is applied to the second pumping cell so as to decompose the NOx component of the measurement gas contained in the second measurement space, and to pump out the resulting oxygen from the second measurement space. Accordingly, the concentration of NOx contained in the measurement gas can be obtained from second pumping current IP2. The electrode of the Vs cell located on the side of the first measurement space is formed around the periphery of or on a portion of the diffusion controlling layer of the Vs cell. As a result, the amount of oxygen flowing from the first measurement space into the second measurement space can be accurately determined by means of the Vs cell. Also, the NOx concentration can be accurately determined without the need for compensation.
    • 一种能够使用简单电路精确地测定待分析气体(测定气体)中所含的NOx的浓度的NOx传感器。 NOx传感器包括第一测量空间和第二测量空间。 第一测量空间经由第一扩散控制层与测量气体连通,第二测量空间经由第二扩散控制层与第一测量空间连通。 控制第一泵浦电流IP1,使得来自Vs电池的输出用作参考电压VC0,以控制以恒定水平流入第二测量空间的氧气量。 将恒定电压施加到第二泵浦单元,以分解包含在第二测量空间中的测量气体的NOx分量,并从第二测量空间泵出所得氧。 因此,可以从第二泵浦电流IP2获得包含在测量气体中的NOx的浓度。 位于第一测量空间一侧的Vs单元的电极形成在Vs单元的扩散控制层的一部分周围。 结果,可以通过Vs单元精确地确定从第一测量空间流入第二测量空间的氧气量。 此外,可以精确地确定NOx浓度,而不需要补偿。
    • 89. 发明授权
    • Blood collection device
    • 采血装置
    • US5403304A
    • 1995-04-04
    • US161205
    • 1993-12-02
    • Noboru Ishida
    • Noboru Ishida
    • A61B5/15A61J1/10A61M1/02A61M39/22A61J1/00
    • A61M39/221A61M1/0231A61M1/0236A61M2039/222A61M2205/7536
    • A blood collection device having a blood-collecting tube, a needle, a blood container connected to the needle by the blood-collecting tube. The blood container has a blood-storing space containing anticoagulant solution. Two blood-component containers and an erythrocyte-preserving solution container are connected to the blood container by a blood-component supplying tube and a tube. The containers are made of soft material. A branching member is coupled to the blood-collecting tube and located between the blood container and the needle. A tube branching from the blood-collecting tube is connected to a filter. The filter allows passage of gas but substantially prevents passage of blood, bacteria, microorganism and the like. A flow stopper connects the blood-collecting tube to the filter. The flow stopper comprises a breakable member closing the branch tube. When the breakable member is broken, the branch tube communicates with the filter.
    • 一种采血装置,具有采集管,针,通过采集管与针连接的血液容器。 血液容器具有含有抗凝血溶液的血液储存空间。 两个血液成分容器和防红细胞溶液容器通过血液供应管和管连接到血液容器。 容器由软质材料制成。 分支构件联接到采血管并且位于血液容器和针之间。 从集血管分支的管连接到过滤器。 过滤器允许气体通过,但是基本上防止了血液,细菌,微生物等的通过。 止血器将集血管连接到过滤器。 流动止动器包括关闭分支管的可破坏构件。 当可破坏部件断裂时,分支管与过滤器连通。