EP2893365A1 - Method and device for checking the plausibility of a current sensor measurement result - Google Patents
Method and device for checking the plausibility of a current sensor measurement resultInfo
- Publication number
- EP2893365A1 EP2893365A1 EP13759726.6A EP13759726A EP2893365A1 EP 2893365 A1 EP2893365 A1 EP 2893365A1 EP 13759726 A EP13759726 A EP 13759726A EP 2893365 A1 EP2893365 A1 EP 2893365A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit
- electrical
- change
- current
- current sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005259 measurement Methods 0.000 title claims abstract description 22
- 230000001419 dependent effect Effects 0.000 claims description 4
- 238000011161 development Methods 0.000 description 10
- 230000018109 developmental process Effects 0.000 description 10
- 238000011156 evaluation Methods 0.000 description 6
- 230000003071 parasitic effect Effects 0.000 description 6
- 238000004590 computer program Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
-
- 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
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
- G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
-
- 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
-
- 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
Definitions
- the invention relates to a circuit for conducting an electric current between a vehicle battery and an electric vehicle connectable to the vehicle battery
- Network component via an electrical component and a vehicle with the circuit.
- a current sensor can be connected in series between the electrical energy source and the electrical consumers.
- a current sensor is known for example from DE 10 2011 078 548 AI.
- the specified method is based on the consideration that current sensors are electrically connected in series between the electrical energy source and the electrical consumers should be to the whole with the electric power too
- the disclosed method is based on the recognition that defects in the electrical circuit in which the current sensor is implemented, or defects in the current sensor itself, such as parasitic short circuits, can lead to a portion of the electric current and thus the electric charge is passed past the current sensor and can not be detected by the current sensor, resulting in a faulty measurement with the current sensor.
- the error-free operation of the current sensor can be ensured in the electrical.
- the specified method comprises the step of connecting a known electrical load to the circuit for carrying out the predetermined change in the circuit state of the electrical circuit.
- the circuit is, for example, part of a vehicle electrical system in a vehicle or is operated in a vehicle as a vehicle electrical system, these known electrical consumers, for example in the form of a heater, an air conditioner, or the like available.
- the training is based on the consideration that not the power itself must be detected, but only its change, which is caused by the connection of the known electrical load.
- the current sensor has at least two shunts connected in parallel, wherein for carrying out the predetermined change in the
- the electrical circuit is in an at least quasi-stationary state before switching on the electrical load.
- a quasi-stationary state is to be understood hereinafter a state in which the state of the electrical circuit within a predetermined
- Time limit changes only within a predetermined range. In a steady state, the state of the electrical circuit would not change at all. In this way it can be ensured that the predetermined
- the known power consumption of the known electrical load of operating conditions of the electrical circuit and / or the electrical load is dependent.
- the specified method comprises the steps:
- the measurement results obtained by the first predetermined change in the circuit state directly or indirectly with another known change in the circuit state are proposed with the development of the specified method.
- Circuit state of the electrical circuit according to a particular embodiment of the specified method after the first predetermined change in the circuit state of the electrical circuit alternatively or in addition to this carried out .
- Control device specified which is adapted to perform one of the specified methods.
- the specified control device has a memory and a processor.
- the specified method is stored in the form of a computer program in the memory and the processor is provided for carrying out the method when the computer program is loaded from the memory into the processor.
- the invention also relates to a computer program with
- Program code means to perform all steps of one of the specified methods when the computer program is run on a computer or one of the specified devices.
- the invention also relates to a computer program product containing a program code which is stored on a computer-readable data carrier and which, when stored on a computer
- Data processing device is performed, performs one of the specified methods.
- a battery pole for delivering an electric current to an electrical consumer
- FIG. 1 shows a schematic view of a current sensor between two line sections
- FIG. 2 is a schematic view of a current sensor in a circuit
- Fig. 3 is a schematic view of an alternative
- Fig. 4 is a schematic view of a current sensor in an alternative circuit
- Fig. 5 shows a current waveform diagram with measurement results of a current sensor.
- the same technical elements are provided with the same reference numerals and described only once.
- FIG. 1 shows a schematic view of a current sensor 2 between two line sections 4, 6.
- an electric current 7 is to be detected, which flows via the current sensor 2 through the two line sections 4, 6.
- the current sensor 2 is designed in the present embodiment as a passive shunt, which is in a manner known to those skilled in a simple electrical resistance with a predetermined resistance value.
- the current sensor 2 can also be constructed as an active shunt, as known for example from DE 10 2011 078 548 AI, or based on a magnetic measuring principle and is in no way limited in its construction.
- the current sensor 2 is shock side between the two line sections 4, 6, wherein at the connection points between the line sections 4, 6 and the current sensor 2 electrical measuring lines 8, 10 are electrically contacted, which are guided to an evaluation circuit 12. Between the measuring lines 8, 10 a measuring voltage 14 drops in a manner known to those skilled in the art. From the measuring voltage 14 and the known resistance value of the current sensor 2 designed as a passive shunt, the current to be detected 7 can be deduced in a manner known to the person skilled in the art.
- the current sensor for example, from a
- FIG. 2 shows a schematic view of the current sensor 2 in a circuit 22.
- the current sensor 2 is connected between an electric energy source 24 designed as a battery and an electrical load 26, wherein the electrical current 7 to be detected is conducted to the current sensor 2 via a first battery pole 28 of the battery 24 and one of the two line sections 4 , The current to be detected 7 is then passed through the other of the two line sections 6 to the electrical load 26 and returns from the electrical load via a return line 30 and a second
- the current sensor 2 is via measuring lines 8, 10 with the Evaluation circuit 12 is connected, wherein the measuring leads 8, 10, the voltage drop across the current sensor 14 14 but also other signals necessary for the measurement, such as a
- Voltage drop 14 can be kept constant at an active shunt.
- the evaluation circuit 12 outputs a state change signal 34, with which they have a
- Circuit state of the circuit 22 can change.
- Circuit state can be any influence that changes the electrical current to be detected 7.
- Such influencing variables can be, for example, the wiring of the circuit 22 or a circuit 22 acting on the circuit
- the state of the electric circuit 22 is changed with the state change signal 34 so that the electric current 7 to be detected changes in a known manner.
- the measuring current 20 shown in FIG. 1 and flowing through the current sensor 2 must also change in the known manner. If it does not, part of the electric current 7 to be detected flows through a defect in the circuit 22, such as the impurity 18 as a parasitic current 16, so that the measuring current 20 is falsified.
- Fig. 3 is intended to illustrate a first of the two examples.
- the current sensor 2 is constructed via two parallel-connected Einzelelshunts 36, 38, wherein the second single shunt 38 over one by the
- State change signal 34 controllable switch 40 can be removed from the parallel circuit.
- the evaluation circuit first detects the current to be detected 7 via the measuring current 20 with both
- FIG. 4 is intended to illustrate the second of the two examples.
- the electrical load 26 comprises for this purpose a three-phase electric motor 42, which is supplied via an inverter 44 with electrical energy from the battery 24 in a manner known to those skilled in the art.
- a single-phase current sensor 46 may be arranged in each phase in order to carry out measurement tasks known to the person skilled in the art, for example the detection of the magnetic stator field.
- Inverter 44 an electric heater 48 connected via the switchable by means of the state change signal 34
- Switch 40 can be disconnected from the parallel circuit.
- the evaluation device 20 can connect the electric heater 48 and measure the value of the
- Measuring current 20 has risen through the current sensor 20. This value must match the current consumption of the electric heater 48. If he does not do so, part of the current 7 to be detected flows as parasitic current 18.
- the single-phase current sensors 46 can also be checked for error-free operation with the method presented in the present application. Reference is made to Fig. 5, which is a qualitative
- the electric heater 48 as an additional electrical load to a start time 54th
- Measuring current 20 and settles on a second stationary value 58 which can be measured at the earliest at a time 60 at which this settling is completed.
- the time between these two times is usually in the range of seconds.
- the amount 62 of the difference between the two values 58 and 56 of the measuring current 20 should correspond to the current consumption of the electric heater.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19216038.0A EP3660531A1 (en) | 2012-09-07 | 2013-09-05 | Method and circuit for checking the plausibility of a current sensor measurement result |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012215946.0A DE102012215946A1 (en) | 2012-09-07 | 2012-09-07 | Circuit for conducting an electric current |
PCT/EP2013/068407 WO2014037465A1 (en) | 2012-09-07 | 2013-09-05 | Method and device for checking the plausibility of a current sensor measurement result |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19216038.0A Division EP3660531A1 (en) | 2012-09-07 | 2013-09-05 | Method and circuit for checking the plausibility of a current sensor measurement result |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2893365A1 true EP2893365A1 (en) | 2015-07-15 |
Family
ID=49150938
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13759726.6A Pending EP2893365A1 (en) | 2012-09-07 | 2013-09-05 | Method and device for checking the plausibility of a current sensor measurement result |
EP19216038.0A Withdrawn EP3660531A1 (en) | 2012-09-07 | 2013-09-05 | Method and circuit for checking the plausibility of a current sensor measurement result |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19216038.0A Withdrawn EP3660531A1 (en) | 2012-09-07 | 2013-09-05 | Method and circuit for checking the plausibility of a current sensor measurement result |
Country Status (7)
Country | Link |
---|---|
US (1) | US9651586B2 (en) |
EP (2) | EP2893365A1 (en) |
JP (1) | JP2015529332A (en) |
KR (1) | KR102110002B1 (en) |
CN (1) | CN104603631B (en) |
DE (1) | DE102012215946A1 (en) |
WO (1) | WO2014037465A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014200200A1 (en) * | 2014-01-09 | 2015-07-09 | Robert Bosch Gmbh | Determining a current intensity of an electric current flowing in or out of a battery |
DE102014208680A1 (en) * | 2014-05-08 | 2015-11-12 | Robert Bosch Gmbh | Method for monitoring current sensors |
DE102015212080B4 (en) * | 2015-06-29 | 2017-06-14 | Continental Automotive Gmbh | Method for determining the deviations of the measured current values from current setpoints in a number of parallel-connected, current-controlled switching paths |
US10421367B2 (en) * | 2015-10-30 | 2019-09-24 | Faraday & Future Inc. | Electric vehicle battery test |
CN107861086A (en) * | 2017-12-27 | 2018-03-30 | 北京东方计量测试研究所 | A kind of in-orbit calibration method of current sensor applied to space and device |
DE102018206804A1 (en) * | 2018-05-03 | 2019-11-07 | Siemens Aktiengesellschaft | Detection of interruptions of a circuit |
US11391805B2 (en) * | 2019-05-10 | 2022-07-19 | Hamilton Sundstrand Corporation | Systems and methods for current sense resistor built-in-test |
DE102022001529A1 (en) | 2022-05-02 | 2023-11-02 | Mercedes-Benz Group AG | Monitoring device for monitoring a battery of an at least partially electrically operated motor vehicle and method |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3555476A (en) * | 1968-10-04 | 1971-01-12 | Michael B Brenner | Leakage current sensor |
JPH07104366B2 (en) * | 1986-09-26 | 1995-11-13 | 日立電子エンジニアリング株式会社 | Current measurement circuit |
JPH02128964A (en) | 1988-11-10 | 1990-05-17 | Mitsubishi Automob Eng Co Ltd | Cylinder device |
JPH0719008Y2 (en) * | 1989-03-31 | 1995-05-01 | 横河電機株式会社 | Current measuring device |
JP3917305B2 (en) * | 1998-10-22 | 2007-05-23 | ミネベア株式会社 | Motor drive circuit |
JP2002139520A (en) | 2000-11-02 | 2002-05-17 | Advantest Corp | Voltage applying current measuring unit |
DE10212685A1 (en) | 2002-03-22 | 2004-01-08 | Robert Bosch Gmbh | Circuit and method for checking a circuit |
ES2287236T3 (en) * | 2002-03-26 | 2007-12-16 | Abb Schweiz Ag | CHECK OF PAUSE OF CURRENT TRANSFORMERS IN SUBSTATIONS. |
DE10343179A1 (en) * | 2003-09-18 | 2005-04-14 | Robert Bosch Gmbh | Current measurement device, especially for monitoring the current of an automotive battery, has voltage measurement means assigned to at least one of a number of consumer fuses |
CN2758789Y (en) | 2004-12-28 | 2006-02-15 | 中达电通股份有限公司 | Fault monitoring circuit for Hall current sensor |
JP2007003451A (en) | 2005-06-27 | 2007-01-11 | Nissan Motor Co Ltd | Abnormality detection device of current sensor |
JP2007192723A (en) | 2006-01-20 | 2007-08-02 | Nissan Motor Co Ltd | Current sensor correcting system and technique |
JP5212887B2 (en) * | 2007-10-17 | 2013-06-19 | 横河電機株式会社 | Current detector |
CN201188127Y (en) | 2008-03-20 | 2009-01-28 | 上海市电力公司 | Loop apparatus for experiment of measuring photoelectric current mutual-inductor precision |
JP2010019805A (en) * | 2008-07-14 | 2010-01-28 | Panasonic Corp | Detection current correction circuit and battery pack using it |
US8564269B2 (en) * | 2008-12-13 | 2013-10-22 | Hewlett-Packard Development Company, L.P. | Systems and methods for scaling a signal in a power factor correction circuit |
CN101493508B (en) * | 2009-01-13 | 2012-03-14 | 国网电力科学研究院 | Calibration test apparatus for extra-high voltage direct current transformer |
US8138704B2 (en) | 2009-05-22 | 2012-03-20 | GM Global Technology Operations LLC | Methods and systems for detecting current sensor error |
CN101927785B (en) * | 2009-06-26 | 2012-08-08 | 上海联盛汽车电子有限公司 | Electric power-assisted steering system with PMSM current sensor error self-correcting function |
CN101644752A (en) * | 2009-08-14 | 2010-02-10 | 河南电力试验研究院 | Online accuracy detection method and system of current transformer |
JP2011109852A (en) * | 2009-11-19 | 2011-06-02 | Toyota Motor Corp | Device for controlling power supply system, and vehicle mounting the same |
CN101718852B (en) | 2009-12-04 | 2012-01-04 | 中国电力科学研究院 | Online detection and calibration method for Hall current sensor |
CN102959407B (en) | 2010-07-01 | 2016-04-13 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Current sensor |
DE102010041275B4 (en) * | 2010-09-23 | 2019-11-28 | Robert Bosch Gmbh | Procedure for checking the proper functioning of a current sensor |
TW201350869A (en) * | 2012-06-07 | 2013-12-16 | Askey Computer Corp | Current measurement system |
-
2012
- 2012-09-07 DE DE102012215946.0A patent/DE102012215946A1/en active Pending
-
2013
- 2013-09-05 KR KR1020157008866A patent/KR102110002B1/en active IP Right Grant
- 2013-09-05 JP JP2015530393A patent/JP2015529332A/en active Pending
- 2013-09-05 EP EP13759726.6A patent/EP2893365A1/en active Pending
- 2013-09-05 CN CN201380046565.7A patent/CN104603631B/en active Active
- 2013-09-05 US US14/426,515 patent/US9651586B2/en active Active
- 2013-09-05 EP EP19216038.0A patent/EP3660531A1/en not_active Withdrawn
- 2013-09-05 WO PCT/EP2013/068407 patent/WO2014037465A1/en active Application Filing
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2014037465A1 * |
Also Published As
Publication number | Publication date |
---|---|
US9651586B2 (en) | 2017-05-16 |
WO2014037465A1 (en) | 2014-03-13 |
KR102110002B1 (en) | 2020-05-12 |
CN104603631B (en) | 2017-12-29 |
DE102012215946A1 (en) | 2014-05-28 |
JP2015529332A (en) | 2015-10-05 |
EP3660531A1 (en) | 2020-06-03 |
US20150219696A1 (en) | 2015-08-06 |
KR20150053273A (en) | 2015-05-15 |
CN104603631A (en) | 2015-05-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2893365A1 (en) | Method and device for checking the plausibility of a current sensor measurement result | |
DE102009047856B4 (en) | System and method for identifying problems in current and voltage measurement | |
DE102018217116B3 (en) | High-voltage system and method for monitoring insulation faults in a high-voltage system | |
DE102011012588B4 (en) | A method of monitoring loss of ground isolation of an electric motor drive circuit | |
DE102013213301A1 (en) | Ground fault detection device for an ungrounded circuit | |
DE102007046483A1 (en) | Circuit arrangement for monitoring electrical insulation | |
DE102007016069A1 (en) | Coreless current sensor for motor vehicle, has Hall-integrated circuit with temperature measuring part to determine environmental temperature, where measuring signal and temperature signal are output outwards over connecting terminals | |
EP2593754B1 (en) | Method of detecting a switching position of a switching device | |
EP3631976B1 (en) | Method for detecting a contact fault in a photovoltaic system | |
DE102012205401A1 (en) | Apparatus and method for redundantly determining a battery current flowing across the poles of a battery | |
DE102008041518A1 (en) | Akkumulatorüberwachungssystem | |
EP3132271B1 (en) | Method and device for ascertaining an inner resistance of a supply network for supplying energy to a personal protection device of a vehicle | |
DE102014219238A1 (en) | Overcurrent detection in the current sensor with Hall sensor | |
DE102012200245A1 (en) | Electronic self-diagnosing circuit for determining normal operation of electronic circuit, comprises detection circuit and operational amplifier, which causes amplification of detection circuit | |
DE102014219807B4 (en) | Method and device for testing the functionality of a current sensor and vehicle | |
DE102017200050A1 (en) | Connection module for an electrical energy storage and energy supply system | |
EP3612846A1 (en) | Device and power supply for a control unit and method for monitoring a power supply | |
DE4443941C2 (en) | Method and device for checking a sensor | |
EP2553482B1 (en) | Vehicle electrical circuit and control device for this circuit | |
WO2016041658A1 (en) | Calibration of current sensors by means of reference current | |
WO2016042109A1 (en) | Method for the continuous calibration of current measuring systems in motor vehicles | |
DE112019000888T5 (en) | System for earthing and diagnosis | |
DE10343179A1 (en) | Current measurement device, especially for monitoring the current of an automotive battery, has voltage measurement means assigned to at least one of a number of consumer fuses | |
EP3640652B1 (en) | Battery sensor and method for operating same | |
EP3532857B1 (en) | Device and method for diagnosing the detection of a multi-phase electric current |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20150407 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CONTINENTAL TEVES AG & CO. OHG |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20190218 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CONTINENTAL AUTOMOTIVE TECHNOLOGIES GMBH |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: CONTINENTAL AUTOMOTIVE TECHNOLOGIES GMBH |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20240508 |