公开(公告)号：EP3545317B1

公开(公告)日：2020-05-27

申请号：EP17809083.3

申请日：2017-11-01

申请人： Qualcomm Incorporated

发明人： ZHONG, Guoan ,  ZHANG, Junmou ,  CHEN, Nan

IPC分类号： G06F1/3206 ,  G06F1/324 ,  G06F1/3234 ,  H03K19/00 ,  G01R19/252

公开(公告)号：EP3545317A1

公开(公告)日：2019-10-02

申请号：EP17809083.3

申请日：2017-11-01

申请人： Qualcomm Incorporated

发明人： ZHONG, Guoan ,  ZHANG, Junmou ,  CHEN, Nan

IPC分类号： G01R19/25 ,  G01R19/252 ,  G06F1/32

摘要： An apparatus for sensing distributed load currents provided by power gating circuit. The apparatus includes a power gating circuit including a set of bulk transistors coupled in series with a set of circuits between first and second voltage rails. The apparatus includes a current sensor with a first ring oscillator, a first frequency-to-code (FTC) converter, a second ring oscillator, a second FTC converter, and a subtractor. The first ring oscillator includes a first set of one or more inverters configured to receive a first voltage at a node between the power gating circuit and the first circuit, and a second set of one or more inverters configured to receive a second voltage at a second node between the power gating circuit and the second circuit. The first ring oscillator is configured to generate a signal including a frequency related to the voltage drops across the first and second sets of transistors.

公开(公告)号：EP3312625A1

公开(公告)日：2018-04-25

申请号：EP17196982.7

申请日：2017-10-18

申请人： Optimum Battery Co., Ltd.

发明人： DENG, Hong

IPC分类号： G01R31/36 ,  G01R19/252

CPC分类号： B60L11/1861 ,  B60L11/1864 ,  G01R15/04 ,  G01R19/252 ,  G01R31/362 ,  G01R31/3658

摘要： The present invention provides a voltage acquisition circuit. The voltage acquisition circuit includes a voltage division and sampling module, a voltage to frequency conversion module, and an isolation module. The voltage to frequency conversion module is electrically coupled to the voltage division and sampling module and the isolation module. The voltage division and sampling module is configured to divide and sample a total voltage of a battery pack, and output a voltage signal to the voltage to frequency conversion module. The voltage to frequency conversion module is configured to convert the voltage signal into a first frequency signal, and output the first frequency signal to the isolation module. The isolation module is configured to electrically isolate the first frequency signal, to generate a second frequency signal. The present invention further provides an electric vehicle with the voltage acquisition circuit.

摘要翻译： 本发明提供了一种电压采集电路。 电压采集电路包括分压采样模块，电压频率转换模块和隔离模块。 电压 - 频率转换模块电耦合到分压采样模块和隔离模块。 分压采样模块用于对电池组的总电压进行分压采样，并输出电压信号至电压频率转换模块。 电压频率转换模块用于将电压信号转换为第一频率信号，并将第一频率信号输出至隔离模块。 隔离模块被配置为电隔离第一频率信号，以产生第二频率信号。 本发明还提供了一种具有电压采集电路的电动车。

公开(公告)号：EP1884787A1

公开(公告)日：2008-02-06

申请号：EP06014223.9

申请日：2006-07-10

申请人： S. THIIM ApS

发明人： Thiim, Søren

IPC分类号： G01R19/252

CPC分类号： G01R19/252 ,  G01R19/16547 ,  G01R19/2513 ,  G01R31/025

摘要： The invention concerns a current sensor (22, 24; 26) for measuring electric current in a conductor. It is adapted for a short circuit indicator system (1). It comprises current responsive means, such as a current transformer (2210), adapted for mounting adjacent to said electric conductor: and sensor circuitry (2220) means for emitting a non-electrical wave signal as an output: said sensor circuitry (2220) comprises current level indication circuitry (2222) comprising a current-to-frequency converter adapted to provide said non-electrical wave signal as a current level indication pulse signal (CS 1 ) having a pulse frequency (Pf ca ) which is proportional to said electric conductor current, when the latter is within a predetermined current interval (l 1 - l 2 ). Thus, a low cost sensor is provided. The invention further relates to a short circuit indicator system (1 ) for an electric conductor. It comprises at least one of the above mentioned current sensors (22; 24; 26); a communication link (32: 34; 36) for relaying at least said non-electrical wave signal from said current sensor; voltage measurement means (40; 2240) for performing a voltage measurement over said electric conductor; a detection relay (51) operable for sensing at least the frequency of at least a current pulse signal and translating it to a current corresponding to the frequency of said current pulse signal; current threshold means operable for determining whether the current corresponding to the frequency of said current pulse signal (CS) is above a predetermined current threshold (I max ): and voltage threshold means operable for determining whether the voltage measured by said voltage measurement means (40; 2240) is below a predetermined voltage threshold (V min ) after a predetermined time period (t 1 ) after said current threshold means has made a positive determination: and short circuit display means (532; 534; 536) operable for indicating that a short circuit has occurred on said electric conductor when said voltage threshold means has made a positive determination. Thus, a rapid and reliable short circuit indicator system is provided, which may be adapted for use for electric conductors in LV, MV and HV power lines.

摘要翻译： 本发明涉及一种电流传感器（22，24; 26），用于测量导体中的电流。 它被用于angepasst短路指示系统（1）。 它包括当前响应装置，：如适于安装相邻于所述电导体的电流互感器（2210）：和传感器电路（2220）用于发射非电波信号作为输出：所述传感器电路（2220）包括 电流幅值指示电路（2222）包括适合于提供所述非电波信号作为电流幅值指示脉冲信号具有一脉冲频率（Pf的CA）（CS 1）成比例的所述电导体的电流 - 频率转换器 电流，当后者处于预定电流间隔（L 1 - 1 2）内。 因此，提供一种低成本的传感器。 本发明还涉及到一个短路指示系统（1），用于在电导体。 它包括上述电流传感器中的至少一个（22; 24; 26）; 为中继来自所述电流传感器的至少所述非电波信号;：通信链路（36 34 32） 电压测量装置（40; 2240），用于执行在所述电导体上的电压测量; 检测继电器（51），其可操作用于至少感测至少一个电流脉冲信号的频率并将其转换成电流对应于所述电流脉冲信号的频率; 电流阈值装置，其可操作用于确定性采矿无论当前对应于所述电流脉冲信号（CS）的频率高于预定电流阈值（I最大）和电压阈值装置，其可操作用于确定性采矿是否由所述电压测量装置测量的电压（40 ; 2240）低于所述电流阈值的装置之后的预定时间段（t 1）之后的预定电压阈值（V分钟）已经作出了肯定的判断：与短路显示装置（532; 534; 536），其可操作用于指示做了 短路发生在所述的电导体，当所述电压阈值装置已经作出了肯定的判断。 因此，快速且可靠的短路指示系统被提供，其可适于使用用于LV，MV和HV电力线的电导体。

公开(公告)号：EP1619509A1

公开(公告)日：2006-01-25

申请号：EP04730108.0

申请日：2004-04-28

申请人： HAMAMATSU PHOTONICS K.K.

发明人： SUZUKI, Takashi, c/o Hamamatsu Photonics K.K. ,  TADAMASA, Itsushi, c/o Hamamatsu Photonics K.K.

IPC分类号： G01R19/252 ,  G01J1/44

CPC分类号： G01J1/46 ,  H03M1/60

摘要： An I/F converter 10 includes a first comparator portion 11 1 , a second comparator portion 11 2 , a current mirror circuit 14, a reference voltage source 15, an SR-type flip-flop circuit 16, a buffer amplifier 18, a first capacitive element C 1 , a second capacitive element C 2 , a switch SW 1 , a switch SW 2 , a switch SW 11 , and a switch SW 21 . The respective operational characteristics of the first comparator portion 11 1 and the second comparator portion 11 2 are identical to each other. The respective capacitance values of the two capacitive elements C 1 and C 2 are equal to each other. The I/F converter 10 is connected at its input end 10a to a photodiode PD, such that a current generated in the photodiode PD is inputted to the input end 10a, allowing a signal at a frequency corresponding to the amplitude of the inputted current to be outputted from the buffer amplifier 18 to the counter portion 19. Accordingly, provided is an I/F converter and a photodetector which can realize a high input/output related linearity with high accuracy over a wide dynamic range.

摘要翻译： I / F转换器10包括第一比较器部分11 1，第二比较器部分11 2，电流镜电路14，参考电压源15，SR型触发器电路16，缓冲放大器18，第一 电容元件C 1，第二电容元件C 2，开关SW 1，开关SW 2，开关SW 11和开关SW 21。 第一比较器部分11 1和第二比较器部分11 2的各自的操作特性彼此相同。 两个电容元件C 1和C 2的相应电容值彼此相等。 I / F转换器10在其输入端10a处连接到光电二极管PD，使得在光电二极管PD中产生的电流被输入到输入端10a，允许以与输入电流的幅度对应的频率的信号 从缓冲放大器18输出到计数器部19.因此，提供了能够在宽动态范围内以高精度实现高输入输出相关线性度的I / F转换器和光电检测器。

公开(公告)号：EP1278071A3

公开(公告)日：2004-02-11

申请号：EP02016022.2

申请日：2002-07-18

申请人： ENSECO GmbH

发明人： Meyer, Gerhard, Dr.-Ing.

IPC分类号： G01R19/252 ,  G01R21/133 ,  G01R22/00 ,  G01R35/04 ,  G01R1/20

CPC分类号： G01R35/04 ,  G01R22/00

摘要： Die Erfindung betrifft Einrichtungen zur Messung des fließenden elektrischen Stromes in mindestens einem elektrischen Leiter (2), der mit wenigstens einem elektrischen Verbraucher verbunden ist, und Verfahren zur Fehlerkorrektur von Einrichtungen zur Messung des fließenden elektrischen Stromes in mindestens einem elektrischen Leiter, der mit wenigstens einem elektrischen Verbraucher verbunden ist, und wobei die Messwerte in eine dem Messwert äquivalente elektrische Impulsfolge gewandelt werden. Diese zeichnen sich besonders durch die Möglichkeiten der Fehlerkorrektur und Kalibrierung aus. Die Fehlerkorrektur basiert auf einer selbstlernenden Struktur in den Einrichtungen, wobei aus einer Korrekturtabelle der für die Einrichtung zutreffende oder nächstliegende Fehlerkorrekturwert bestimmt, ausgewählt und in eine Steuer- und Verarbeitungseinrichtung nichtveränderbar so übernommen wird, dass bei jeder Messung dieser Fehlerkorrekturwert während der aktuellen Messungen berücksichtigt wird. Dabei werden innerhalb eines festgelegten Zeitintervalls die Ausgangsimpulsfolge hinsichtlich ihrer Impulszahl in geeignet kleinen Iterationsschritten jeweils soviel Impulse der Eingangsimpulsfolge abgezogen oder hinzugefügt, dass eine nominelle Impulszahl gleich groß ist.

公开(公告)号：EP1358490A1

公开(公告)日：2003-11-05

申请号：EP02704630.9

申请日：2002-02-06

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： RUPP, Jürgen

IPC分类号： G01R15/14 ,  G08C19/00 ,  G01R19/252 ,  G01R19/00

CPC分类号： G01R19/0092 ,  G01R15/146 ,  G01R19/252 ,  G01R21/133

摘要： In order to measure the current in a shunt, the voltage drop in the resistor of said shunt is evaluated as a measurement of the current. Normally, galvanic separation of the measuring device is required for high-potential shunts. According to the invention, a digital measuring signal provides the clock pulse for modulation of the supply current for the measuring device after an A/D conversion. The modulated supply current is also used as a carrier for the measuring information. In the associated evaluation device, an A/D converter (3) and a modulation unit (4) are arranged downstream from an amplifier (2) for the voltage signal which is picked off from the shunt (1). The modulated measuring signal is transmitted to an evaluation device (5).

公开(公告)号：EP0481096A1

公开(公告)日：1992-04-22

申请号：EP90116905.2

申请日：1990-09-03

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： Hartwig, Hagen, Dipl.-Ing. ,  Schwesig, Günter, Dipl.-Ing.

IPC分类号： G01R19/252 ,  H03M1/60 ,  H03K7/06 ,  H02P7/00

CPC分类号： G01R35/005 ,  G01R27/28

摘要： Mit dem Verfahren zur Bestimmung der Frequenzverstärkung (V f ) eines Spannungs-Frequenz-Wandlers (UF) läßt sich ein zeitlich konstanter Fehler, der beispielsweise durch analoge Bauteile (R,C) verursacht sein kann, kompensieren. Die Steuerung (R) eines elektrischen Systems (ES) sorgt dafür, daß die von der Reaktion des elektrischen Systems (ES) abgeleitete Eingangsspannung (U E ) des Spannungs-Frequenz-Wandlers (UF) Null ist und bestimmt dabei aus dessen Ausgangssignal (P) die zur Berechnung der Frequenzverstärkung V f benötigte Mittenfrequenz f₀.

摘要翻译： 用于确定电压 - 频率转换器（UF）的频率放大（Vf）的方法，并且可以用于补偿例如由模拟部件（R，C）引起的恒定时间误差。 电气系统（ES）的控制系统（R）确保从电气系统（ES）的响应导出的电压 - 频率转换器（UF）的输入电压（UE）为零，并且在此期间 处理根据转换器的输出信号（P）确定计算频率放大Vf所需的中心频率f0。