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    • 7. 发明公开
    • Coil unit and apparatus for detecting foreign matter
    • 线圈单元和用于检测异物的设备
    • EP2879140A1
    • 2015-06-03
    • EP14195201.0
    • 2014-11-27
    • TDK Corporation
    • Urano, Takashi
    • H01F38/14H01F27/40G01V3/10
    • G01N27/025G01V3/105H01F27/402H01F38/14H02J5/005H02J7/025H02J50/12H02J50/60
    • The present invention aims to provide a coil unit for improving an accuracy in detecting foreign matter and an apparatus for detecting foreign matter which improves the accuracy in detecting foreign matter when a power is transmitted in a contactless manner. A power feeding coil unit L100 (a coil unit) of the present invention is provided with a power feeding coil L1 (a coil for power transmission) and an apparatus D100 for detecting foreign matter. The apparatus D100 for detecting foreign matter is provided with a plurality of resonators R1 having a resonator coil M1 and a resonator capacitor C1 and also an excitation coil E1 for exciting the plurality of resonators R1. The plurality of resonators R1 are disposed to cover at least an area interlinking with a magnetic flux generated by the power feeding coil L1 and to decrease an influence of mutual inductance.
    • 本发明的目的在于提供一种用于提高异物检测精度的线圈单元和异物检测装置,其以非接触方式传输电力时提高异物检测精度。 本发明的供电线圈单元L100(线圈单元)设置有供电线圈L1(用于电力传输的线圈)和用于检测异物的设备D100。 用于检测异物的设备D100设置有具有谐振器线圈M1和谐振器电容器C1的多个谐振器R1以及用于激励多个谐振器R1的激励线圈E1。 多个谐振器R1被设置为至少覆盖与由供电线圈L1产生的磁通量交链的区域,并且减小互感的影响。
    • 8. 发明公开
    • Conductivity sensor arrangement, in particular for measuring the conductivity of fluids
    • 电导率传感器布置,特别是用于测量液体的导电率
    • EP2784492A1
    • 2014-10-01
    • EP13161482.8
    • 2013-03-27
    • Baumer A/S
    • Jensen, Kurt MöllerHansen, KennethKorovin, Dr. Konstantin
    • G01N27/02G01R27/22
    • G01N27/025G01R27/22
    • The invention relates to a conductivity sensor arrangement (1) and to a method in particular for measuring the conductivity of fluids (14). Known conductivity sensors for identifying fluids based on their conductivity are not satisfactory as they are not easy to calibrate, not easy to maintain and operate only in a very limited temperature range. These problems can be avoided if the conductivity sensor arrangement (1) comprises a sampling coil system (2) for measuring conductivity, a compensating coil system for compensating measurement errors of the sampling coil system, wherein the compensating coil system (3) is magnetically insulated from the sampling coil system (3). The insulation is preferably obtained by arranging at least one ferrite layer between the sampling coil system (2) and the compensating coil system (3). The ferrite layer may contain or consist of a hard ferrite material, in particular a NiZn-Ferrite. The sampling and compensating coil systems (2, 3) may be planar. The conductivity is measured by generating and measuring a first magnetic field reaching into the fluid (14) by the sampling coil system (2). At the same time, a second magnetic field (24) is generated and measured, which is magnetically insulated from the first magnetic field (13, 16).
    • 本发明涉及一个电导率传感器装置(1)以及一种用于测量流体的导电率(14),特别的方法。 已知用于基于其导电性液体电导率传感器是不能令人满意的,因为它们不容易校准,不易维护,只有在非常有限的温度范围内工作。 可避免这些问题,如果电导率传感器装置(1)包括采样线圈系统(2),用于测量导电率,补偿线圈系统用于补偿采样线圈系统的测量误差,worin补偿线圈系统(3)被磁性地绝缘 从采样线圈系统(3)。 绝缘最好由取样线圈系统(2)和补偿线圈系统之间布置至少一个铁氧体层(3)获得。 铁氧体层可含有或由硬铁氧体材料的,特别是NiZn铁氧体。 采样和补偿线圈系统(2,3)可以是平面的。 电导率是通过产生和测量第一磁场伸入由采样线圈系统(2)中的流体(14)来测量。 与此同时,产生和测量的第二磁场(24),所有这些磁从第一磁场(13,16)电绝缘。