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    HALL-SENSORANORDNUNG ZUR OFFSET-KOMPENSIERTEN MAGNETFELDMESSUNG
    1.
    发明授权
    HALL-SENSORANORDNUNG ZUR OFFSET-KOMPENSIERTEN MAGNETFELDMESSUNG 有权
    霍尔传感器安排偏置补偿的磁场测量

    公开(公告)号：EP1206707B1

    公开(公告)日：2003-02-19

    申请号：EP00962460.2

    申请日：2000-09-08

    申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

    发明人： HOHE, Hans-Peter ,  WEBER, Norbert ,  SAUERER, Josef

    IPC分类号： G01R33/07

    CPC分类号： G01R33/075 ,  G01R33/0094 ,  G01R33/07

    摘要： The invention relates to a Hall sensor array for measuring a magnetic field with offset compensation, comprising a first pair (1A, 1B) and at least one additional pair (2A, 2B; 2A, 2B, 3A, 3B) of Hall sensor elements, whereby each Hall sensor element (1A, 1B, 2A, 2B; 1A, 1B, 2A, 2B, 3A, 3B) has four connections (K1, K2, K3, K4), of which a first and a third connection (K1, K3) act as power supply connections for supplying an operating current (I¿Operation?) and a second and fourth connection (K2, K4) act as measurement connections for measuring a Hall current (UHall). The Hall sensor elements (1A, 1B, 2A, 2B; 1A, 1B, 2A, 2B, 3A, 3B) are arranged in such a way that the current directions of the operating current (I¿Operation?) in the two Hall sensor elements of each pair are offset at an angle of approximately 90°, in relation to one another. The Hall sensor elements (2A, 2B; 2A, 2B, 3A, 3B) of the additional pair(s) are arranged in such a way that their current directions are offset at an angle of approximately 90°/n, in relation to the current directions of the first pair (1A, 1B), whereby n is the total number of Hall sensor element pairs and n ≥ 2.

    TRANSISTORSCHALTUNG
    3.
    发明授权
    TRANSISTORSCHALTUNG 有权
    晶体管电路

    公开(公告)号：EP1543618B1

    公开(公告)日：2009-10-14

    申请号：EP03748089.4

    申请日：2003-09-25

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： SUNDERMEYER, Jan ,  SAUERER, Josef

    IPC分类号： H03K19/018 ,  H03K19/0185 ,  H03F3/50 ,  H03K19/003

    CPC分类号： H03K19/00315 ,  H03F3/50 ,  H03K19/00307 ,  H03K19/01806 ,  H03K19/018507

    摘要： The invention relates to a transistor circuit comprising an emitter-follower transistor (EF ) provided with an emitter that is connected to the collector of a first current source transistor (SQ ), the base of the first emitter-follower transistor (EF ) representing an input (IN) of the circuit and the base of the first current source transistor (SQ ) representing a reference voltage input (REF). Said transistor circuit also comprises a second emitter-follower transistor (EF ) provided with an emitter that is connected to the collector of a second current source transistor (SQ ), the emitter of the first current source transistor (SQ ) and the base of the second current source transistor being interconnected in such a way that the voltage (REF ) applied to the base of the second current source transistor (SQ ) depends on the voltage applied to the emitter of the first current source transistor (SQ ). As an alternative to the cited bipolar transistors, the inventive transistor circuit also comprises correspondingly interconnected field-effect transistors.

    SENSORANORDNUNG UND VERFAHREN
    5.
    发明公开
    SENSORANORDNUNG UND VERFAHREN 有权
    传感器组件及方法

    公开(公告)号：EP2702360A1

    公开(公告)日：2014-03-05

    申请号：EP12718126.1

    申请日：2012-04-16

    申请人： Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V.

    发明人： HERZER, Elmar ,  SCHLAG, Ulrich ,  SAUERER, Josef

    IPC分类号： G01D3/028

    CPC分类号： G01R35/005 ,  G01D3/028

    摘要： The invention relates to a sensor assembly having a current controller, a reference resistor and a feed current scaler. The sensor assembly further comprises a sensor element having an internal resistor, wherein the internal resistor of the sensor element and the reference resistor have a predetermined relationship with one another. The current controller is designed to provide a reference current through the reference resistor and, in response to a disturbance-induced change of the reference resistor, alter the reference current such that the voltage dropping across the reference resistor remains in a predetermined range around the applied target voltage. The current controller is further designed to provide a feed current to the feed current scaler and to alter said current by an amount of the feed current depending on the amount of the reference current. The feed current scaler is designed to feed a scaled feed current to the sensor element on the basis of the feed current in order to scale a voltage dropping across the internal resistor of the sensor element in accordance with the scaling of the feed current.

    VERFAHREN UND VORRICHTUNG ZUR FEHLERSTROMÜBERWACHUNG IN EINEM ELEKTRISCHEN WECHSELSTROMNETZ
    7.
    发明授权
    VERFAHREN UND VORRICHTUNG ZUR FEHLERSTROMÜBERWACHUNG IN EINEM ELEKTRISCHEN WECHSELSTROMNETZ 有权
    方法和仪器监测故障电流电力网CHANGE

    公开(公告)号：EP1479148B1

    公开(公告)日：2005-10-26

    申请号：EP03787796.6

    申请日：2003-08-14

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： HOHE, Hans-Peter ,  SAUERER, Josef

    IPC分类号： H02H3/32

    CPC分类号： H02H3/32

    摘要： The invention relates to a method for monitoring fault currents in an electric AC mains having a predetermined mains frequency. According to the invention, current values of electric currents to be monitored are recorded (12a 12d), after which the recorded current values are converted into digitized current values (14). Afterwards, these digitized current values are used to calculate (16) cumulative current values, from which blocks comprised of the cumulative current values are formed (18) according to the phase position of a mains voltage signal. The blocks are then split (24) into spectral components. The spectral components of the blocks are then monitored (36) with regard to an exceeding of spectral limit values in order to evaluate the danger of the fault current.