WO2014095226A1 - Verfahren zum einrichten eines stromsensors - Google Patents
Verfahren zum einrichten eines stromsensors Download PDFInfo
- Publication number
- WO2014095226A1 WO2014095226A1 PCT/EP2013/074522 EP2013074522W WO2014095226A1 WO 2014095226 A1 WO2014095226 A1 WO 2014095226A1 EP 2013074522 W EP2013074522 W EP 2013074522W WO 2014095226 A1 WO2014095226 A1 WO 2014095226A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- current sensor
- current
- internal resistance
- voltage drop
- plausibility
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
- G01R35/007—Standards or reference devices, e.g. voltage or resistance standards, "golden references"
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/20—Modifications of basic electric elements for use in electric measuring instruments; Structural combinations of such elements with such instruments
- G01R1/203—Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/08—Circuits for altering the measuring range
- G01R15/09—Autoranging circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
Definitions
- the invention relates to a method for establishing a current sensor with an internal resistance, which is dependent on the current to be measured, a control device for carrying out the method and a current sensor with the control device.
- a current sensor In order to carry out measurements of an electric current flowing between an electrical energy source and an electrical consumer in a motor vehicle, a current sensor can be connected in series between the electrical energy source and the electrical consumers. Such a current sensor is known for example from DE 10 2011 078 548 AI.
- According to one aspect of the invention comprises a method of testing a current sensor having an internal resistance, which is dependent on the current to be measured, the internal resistance is set under a control of a Istnapssabfalls the current sensor to a desired voltage drop, the step Calib ⁇ Center or plausibility checking of operation of the current sensor based on a characteristic in which the current to be measured is compared with an internal resistance-dependent variable or the internal resistance.
- plausibility check step can basically check the functionality of the current sensor, then the functionality of the current sensor can be fundamentally established with the Calibrate step.
- the specified method is based on the consideration that an ordinary current-voltage characteristic of the above-mentioned current sensor, which incidentally has a broken rational course, would not be readily recorded in order to determine the error-free functionality by plausibility and / or to ensure by calibration.
- the regulation of the current sensor from the specified method always reacts in such a way that the value of the internal resistance of the current sensor changes with a changing value of the current to be measured in order to set the actual voltage drop across the current sensor according to the setpoint voltage drop at the current sensor.
- the current sensor charak ⁇ can be terized by means of a characteristic curve in which the changing inner resistance or the changing internal resistance loading inflow end control amount over the current to be measured is applied. This characteristic makes use of the specified method in order to ensure the error-free functionality of the specified current sensor as part of the calibration or plausibility check.
- the actual voltage drop across the current sensor during the set-up of the current sensor is smaller than during normal operation of the current sensor.
- This refinement is based on the consideration that it is not important for the correct functionality of the current sensor whether the current sensor can map a corresponding changing internal resistance or a corresponding control variable influencing this internal resistance for all expected values of the current to be measured, but whether a form of the recorded characteristic of an expected shape.
- the shape of the characteristics is due to the control circuit of the current sensor from the specified method of the set target voltage in a certain way dependent. This means that if the shape of the characteristic in the test case corresponds to an expected shape, it can be concluded that the current sensor also works in normal operation.
- the current sensor may be calibrated based on a characteristic curve having a desired shape. ⁇
- the calibration or the plausibility of the current sensor can be carried out based on a current which is significantly smaller than the currents to be measured during normal operation of the current sensor.
- the power consumption of the current sensor in the calibration be ⁇ relationship as plausibility and thus the power loss and the associated self-heating of the current sensor can be kept small.
- the actual voltage drop for testing the current sensor is less than 50%, preferably less than 20%, particularly preferably less than 10%, of the value for the actual voltage drop during normal operation of the current sensor.
- the internal resistance of the current sensor is composed of at least two controllable parallel-connected partial shunts, with at least one controllable partial shunt being removed from the parallel circuit for calibrating or checking the current sensor. In this way, the internal resistance of the current sensor can be reduced, whereby at a same current through the current sensor of the
- a maximum of one controllable remains for calibrating or plausibility checking of the current sensor Partial shunt in the parallel circuit, so that the
- the specified method comprises the step of specifying a value for the nominal voltage drop for calibrating or plausibility checking of the current sensor based on the characteristic curve. In this way, the actual voltage drop across the current sensor can be influenced by the control. Since the voltage drop across the current sensor together with the current through the current sensor determines its internal resistance, the actual voltage drop at the current sensor can be influenced during the setup of the current sensor and therefore made smaller than during normal operation of the current sensor.
- the specified setpoint voltage drop for calibrating or plausibility checking of the current sensor based on the characteristic curve is selected to be particularly smaller than a setpoint voltage drop during normal operation of the current sensor.
- a control device is set up to carry out a method according to one of the preceding claims.
- the specified device has a memory and a processor.
- the specified method is stored in the form of a Compu ⁇ terprogramms in the memory and the processor is provided for performing the method when the computer program from the memory is loaded into the processor.
- a computer program comprises program code means for performing all the steps of one of the specified methods when the computer program is executed on a computer or one of the specified devices.
- a computer program product comprises a program code which is stored on a data carrier and the compu ⁇ terlesbaren, when executed on a data processing device, carries out one of the methods specified.
- FIG. 1 shows a schematic view of a vehicle battery circuit with two current sensors connected to a vehicle battery pole
- Fig. 2 is a schematic view of a control circuit for controlling the current sensor of Fig. 1;
- FIGS. 1 and 2 correspond to a schematic view of a vehicle battery terminal 2 connected as a current sensor trainedsammlungbatte ⁇ riescrien 4 with two partial shunts 6 and a schematic view of a control circuit 8 for controlling the partial shunt 6 of FIG demonstrate.
- Theffybatteriepol 2 is one of twogglingbatte ⁇ riepolen 2 a vehicle battery 10.
- an electric Electricity 12 from an electrical energy source 14, such as a socket included or delivered to an electrical load 16, such as a drive motor of a vehicle, not shown.
- the electrical energy source 14 and the electrical load 16 may be additionally electrically separated from each other via a switch 18, so that depending on the position of the switch 18 either the electric Power source 14 or the electrical load 16 to the vehicle battery 10 is connected ⁇ .
- the vehicle battery circuit 4 with the partial shunts 6 can be constructed in accordance with the active shunt disclosed in DE 10 2011 078 548 A1.
- each subshunt 6 in the present embodiment has an unspecified referenced field effect transistor and a not further referenced freewheeling diode, which is connected in the forward direction from source to drain. Both partial shunts 6 are connected in parallel with each other.
- an evaluation circuit 20 is also shown.
- the evaluation circuit 20 may be part of the vehicle battery circuit 4 or formed as a separate circuit. In the present embodiment, the vehicle battery circuit 4 is formed, for example, separately from the evaluation circuit 20.
- the evaluation circuit 20 controls the field-effect transistors of the partial shunt 6 in such a way that a voltage drop 22 across the partial shunt 6 is maintained at a specific desired value.
- the evaluation circuit 20 receives a first electrical potential 24, which is tapped from the vehicle battery 10 ⁇ seen before the subshaft 6 and a second electrical potential 26 which is tapped from the vehicle battery ⁇ 10 seen behind the subshunt 6.
- the voltage drop 22 is determined from the difference between the first electrical potential 24 and the second electrical potential. potential 26.
- the voltage drop 22 is maintained at the reference value 30 via the control circuit 8 shown in FIG.
- the control signal 28 is, as shown in DE 10 2011 078 548 AI, depending on the measured electric current 12. Therefore, when this dependency is deposited in the evaluation circuit 20, the electric current 12 are derived directly from the control signal 28.
- the partial shunts 6 and thus the vehicle battery circuit 4 are connected in such a way that they can measure the current 12 from the vehicle battery 10. In order to be able to measure a current 12 into the vehicle battery 10, further partial shunts would be necessary, which are connected in antiparallel to the shown partial shunts 6 of FIG.
- the measuring principle of the current flowing into the battery 12 would then correspond to the measuring principle described above.
- the control circuit 8 comprises in the present embodiment as a controlled system, the vehicle battery circuit 4, which is controlled via the control signals 28 in the manner described above, so that the voltage drop 20 can be tapped via the partial shunt 6 of the vehicle battery ⁇ circuit 4.
- This voltage drop 2 is compared to the reference value 30 at a difference element 32 by subtraction, resulting in a control difference 34, which is output to a known to the expert and arranged in the evaluation circuit 20 controller 36.
- the controller 36 in turn generates the control signals 28 to maintain the voltage drop 22 at the setpoint 30.
- the embodiment is based on the consideration that the STEU ⁇ ersignal 28 sets the internal resistance of the field effect transistors in the sub-Hunts 6, because the greater the current to be measured 12 is, the smaller the internal resistance of the must
- the evaluation circuit 20 to one of the two sub-shunts 6 via a switch 46 from the parallel circuit Remove the vehicle battery circuit 4 and so increase their internal resistance. In this way, the voltage drop would decrease at a same current 12, so that the vehicle battery circuit 4 slips on a left of the characteristic curves 38, 40, 42 considered in the image plane of FIG. 3.
- the leftmost 38 of the characteristic curves 38, 40, 42 is selected.
- the setpoint value 30 for the voltage drop 22 could also be selected to be lower, which would lead to the same result.
- a maximum value 48 of the control signal 28 could be achieved in this way in the test or calibration case with a lower current value 50 of the current 12 to be measured, as a maximum measurable current value 52 in normal operation of the driving ⁇ battery battery circuit 4th
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020157019166A KR20150097677A (ko) | 2012-12-20 | 2013-11-22 | 전류 센서를 설정하기 위한 방법 |
CN201380066034.4A CN104871016A (zh) | 2012-12-20 | 2013-11-22 | 用于设置电流传感器的方法 |
US14/653,466 US20150346312A1 (en) | 2012-12-20 | 2013-11-22 | Method for setting up a current sensor |
EP13794938.4A EP2936169A1 (de) | 2012-12-20 | 2013-11-22 | Verfahren zum einrichten eines stromsensors |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012224112.4A DE102012224112A1 (de) | 2012-12-20 | 2012-12-20 | Verfahren zum Einrichten eines Stromsensors |
DE102012224112.4 | 2012-12-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014095226A1 true WO2014095226A1 (de) | 2014-06-26 |
Family
ID=49626976
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/074522 WO2014095226A1 (de) | 2012-12-20 | 2013-11-22 | Verfahren zum einrichten eines stromsensors |
Country Status (6)
Country | Link |
---|---|
US (1) | US20150346312A1 (de) |
EP (1) | EP2936169A1 (de) |
KR (1) | KR20150097677A (de) |
CN (1) | CN104871016A (de) |
DE (1) | DE102012224112A1 (de) |
WO (1) | WO2014095226A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3015877B1 (de) * | 2014-10-31 | 2016-10-26 | Samsung SDI Co., Ltd. | Verfahren zum Kalibrieren einer Strommesseinrichtung |
DE102015212080B4 (de) | 2015-06-29 | 2017-06-14 | Continental Automotive Gmbh | Verfahren zum Ermitteln der Abweichungen der gemessenen Stromist- von Stromsollwerten in einer Anzahl parallel geschalteter, stromgeregelter Schaltpfade |
CN109374942A (zh) * | 2017-08-04 | 2019-02-22 | 许继集团有限公司 | 一种直流电压和直流电流信号自适应采样电路及方法 |
CN109387682A (zh) * | 2017-08-04 | 2019-02-26 | 许继集团有限公司 | 一种交流电压和交流电流信号自适应采样电路及方法 |
CN112415401B (zh) * | 2020-10-26 | 2022-08-05 | 潍柴动力股份有限公司 | 应用于车辆的电池监控方法、装置和设备 |
KR102641127B1 (ko) | 2021-11-19 | 2024-02-27 | 주식회사 뉴파워 프라즈마 | 전압-전류 센서 검증 장치 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0581993A1 (de) * | 1992-08-07 | 1994-02-09 | Siemens Aktiengesellschaft | Schaltungsanordnung zum Steuern einer Last und zum Erkennen einer Leitungsunterbrechung |
EP2068158A2 (de) * | 2007-12-04 | 2009-06-10 | Diehl Aerospace GmbH | Vorrichtung zum Messen eines Laststroms |
WO2011113939A1 (de) * | 2010-03-18 | 2011-09-22 | Magna Steyr Fahrzeugtechnik Ag & Co Kg | Verfahren zum messen eines elektrischen stroms und vorrichtung hierfür |
DE102011078548A1 (de) | 2010-07-01 | 2012-01-05 | Continental Teves Ag & Co. Ohg | Stromsensor |
DE102010041275A1 (de) * | 2010-09-23 | 2012-03-29 | Sb Limotive Company Ltd. | Verfahren zur Überprüfung der ordnungsgemäßen Funktionsweise eines Stromsensors |
DE102012006269A1 (de) * | 2011-03-29 | 2012-10-04 | Continental Teves Ag & Co. Ohg | Stromsensor |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5959464A (en) * | 1996-09-03 | 1999-09-28 | Motorola Inc. | Loss-less load current sensing driver and method therefor |
US7119995B2 (en) * | 2004-01-22 | 2006-10-10 | Seagate Technology Llc | ESD shunt for transducing head |
US7154291B2 (en) * | 2004-08-24 | 2006-12-26 | Delphi Technologies, Inc. | Measuring bi-directional current through a field-effect transistor by virtue of drain-to-source voltage measurement |
US8558711B2 (en) * | 2005-11-18 | 2013-10-15 | Simplexgrinnell Lp | System for testing NAC operability using backup power |
CN100538383C (zh) * | 2006-03-02 | 2009-09-09 | 中芯国际集成电路制造(上海)有限公司 | Mos晶体管特性曲线仿真方法 |
JP4494453B2 (ja) * | 2007-11-13 | 2010-06-30 | トヨタ自動車株式会社 | 二次電池の制御装置および制御方法 |
US8536893B2 (en) * | 2009-03-09 | 2013-09-17 | Qualcomm Incorporated | Circuit for measuring magnitude of electrostatic discharge (ESD) events for semiconductor chip bonding |
-
2012
- 2012-12-20 DE DE102012224112.4A patent/DE102012224112A1/de not_active Withdrawn
-
2013
- 2013-11-22 CN CN201380066034.4A patent/CN104871016A/zh active Pending
- 2013-11-22 US US14/653,466 patent/US20150346312A1/en not_active Abandoned
- 2013-11-22 KR KR1020157019166A patent/KR20150097677A/ko not_active Application Discontinuation
- 2013-11-22 EP EP13794938.4A patent/EP2936169A1/de not_active Withdrawn
- 2013-11-22 WO PCT/EP2013/074522 patent/WO2014095226A1/de active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0581993A1 (de) * | 1992-08-07 | 1994-02-09 | Siemens Aktiengesellschaft | Schaltungsanordnung zum Steuern einer Last und zum Erkennen einer Leitungsunterbrechung |
EP2068158A2 (de) * | 2007-12-04 | 2009-06-10 | Diehl Aerospace GmbH | Vorrichtung zum Messen eines Laststroms |
WO2011113939A1 (de) * | 2010-03-18 | 2011-09-22 | Magna Steyr Fahrzeugtechnik Ag & Co Kg | Verfahren zum messen eines elektrischen stroms und vorrichtung hierfür |
DE102011078548A1 (de) | 2010-07-01 | 2012-01-05 | Continental Teves Ag & Co. Ohg | Stromsensor |
DE102010041275A1 (de) * | 2010-09-23 | 2012-03-29 | Sb Limotive Company Ltd. | Verfahren zur Überprüfung der ordnungsgemäßen Funktionsweise eines Stromsensors |
DE102012006269A1 (de) * | 2011-03-29 | 2012-10-04 | Continental Teves Ag & Co. Ohg | Stromsensor |
Also Published As
Publication number | Publication date |
---|---|
DE102012224112A1 (de) | 2014-06-26 |
CN104871016A (zh) | 2015-08-26 |
EP2936169A1 (de) | 2015-10-28 |
US20150346312A1 (en) | 2015-12-03 |
KR20150097677A (ko) | 2015-08-26 |
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