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    • 3. 发明申请
    • DEVICE AND METHOD FOR MEASURING ELECTRICAL CURRENT IN AN ELECTRICAL CONDUCTOR
    • 用于测量电导体中的电流的装置和方法
    • WO2018073627A1
    • 2018-04-26
    • PCT/IB2016/056323
    • 2016-10-21
    • SONY MOBILE COMMUNICATIONS INC.SONY MOBILE COMMUNICATIONS AB
    • KLINGHULT, GunnarROSQVIST, BjörnAGARDH, Kåre
    • G01R1/20G01R15/14G01R15/18G01R19/00G01R19/25
    • The disclosure relates to a device for measuring electrical current in an electrical conductor (2), the device comprising: a measuring circuit configured to be connected to the electrical conductor, the measuring circuit comprising: a resistor based measuring circuit comprising a resistor (10), a transformer based measuring circuit comprising a current transformer (20) comprising a primary coil (20a), connected in series with the resistor (10) of the resistor based measuring circuit, a first inverter (12) configured to transform a first digital signal using a transfer function being an inverse of a transfer function representing the resistor based measuring circuit; a second inverter (22) configured to transform a second digital signal using a transfer function being an inverse of a transfer function representing the transformer based measuring circuits; and a signal combiner (5) configured to combine the transformed first and second digital signals, thereby providing a digital signal representing the electrical current in the electrical conductor. The disclosure also relates to a method for measuring electrical current in an electrical conductor.
    • 本公开涉及一种用于测量电导体(2)中的电流的装置,所述装置包括:测量电路,其被配置为连接到所述电导体,所述测量电路包括:基于电阻器 测量电路包括电阻器(10),基于变压器的测量电路,其包括:电流互感器(20),其包括与基于电阻器的测量电路的电阻器(10)串联连接的初级线圈(20a);第一逆变器 ),被配置为使用传递函数来变换第一数字信号,该传递函数是代表基于电阻器的测量电路的传递函数的逆函数; 第二反相器(22),被配置为使用传递函数来变换第二数字信号,该传递函数是代表基于变压器的测量电路的传递函数的逆函数; 和信号组合器(5),被配置为组合变换的第一和第二数字信号,由此提供表示电导体中的电流的数字信号。 本公开还涉及用于测量电导体中的电流的方法。