WO2006097377A1 - Verfahren und schaltungsanordnung zur detektion eines leitungsbruches - Google Patents
Verfahren und schaltungsanordnung zur detektion eines leitungsbruches Download PDFInfo
- Publication number
- WO2006097377A1 WO2006097377A1 PCT/EP2006/050426 EP2006050426W WO2006097377A1 WO 2006097377 A1 WO2006097377 A1 WO 2006097377A1 EP 2006050426 W EP2006050426 W EP 2006050426W WO 2006097377 A1 WO2006097377 A1 WO 2006097377A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- switching device
- potential
- ubat
- load
- signal level
- Prior art date
Links
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
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/58—Testing of lines, cables or conductors
Definitions
- the invention relates to a method and a circuit arrangement for the continuous detection of a line break in a full bridge, which contains four operated between a supply potential and a ground potential switching devices and controls a load, wherein each switching device, a diode is connected in parallel.
- the technical field of the invention relates to the detection of a line break in a full bridge.
- full bridges and H-bridges are used to drive DC motors in the motor vehicle, for example throttle, exhaust gas recirculation or the like, in order to be able to operate the DC motor in a forward direction and in a reverse direction. It is important for diagnostic purposes to detect potential line breaks in the full bridge or H-bridge during operation of the DC motor.
- the first method is based on a current measurement.
- the current through the full bridge is measured and compared with a reference current. If the measured current falls below the reference current, it is known that a line break exists.
- the current increase in the actuator or motor depends on its electrical properties. Thus, if the switch-on times are set too short, incorrect line breakage detection may occur. This can be avoided by a suitable choice of the filter time. But this is a high effort given to adjust the filter time for the respective actuator. That is for each actuator used This filter time must first be determined and then set for the actuator. For adaptation to the respective actuator time and adaptability test must be applied. This will incur additional costs for the detection of line breaks.
- the second method is based on a voltage measurement.
- suitable devices are provided for a diagnosis at the outputs of the full bridge.
- it must be ensured in this second method that the full bridge is in the off state during the diagnosis. Accordingly, in this second method no continuous line break detection, so no diagnosis during operation of the actuator possible.
- the voltage measurement for the line break detection in the second method must be initiated, that is initiated. This requires in addition to the first method in addition to a further expenditure of time.
- the object underlying the present invention is therefore to provide a continuous
- the lead breakage detection should be independent of the current flowing through the inductive load current.
- the object is achieved by a method having the features of patent claim 1 and by a circuit arrangement having the features of patent claim 2.
- a continuous line break detection in the switched operation of the inductive load or of the inductive actuator is made possible according to the invention.
- the method according to the invention or the circuit arrangement according to the invention need not be adapted to the particular load to be controlled or to the respective actuator.
- the potential measurement for the detection does not have to be specially initiated. This allows the Invention a simple and therefore cost-effective detection of wire breaks in full bridges.
- a respective diode is arranged parallel to a load path of each switching device.
- the respectively arranged diode ensures that also potential differences during switching of the circuit arrangement, ie during operation of the load can be measured.
- the control circuit generates in each case a control signal for the switching devices, with which the switching devices are each switchable, wherein the control circuit transmits exactly one of the four control signals before the other control signals for switching to a predeterminable switching device.
- the control circuit generates a control in dependence on the direction specification and the control clock, which prevents cross-currents when switching between the operating directions and between switching and freewheeling.
- the freewheel can be active via an in
- the comparison device has: a) a first comparator, which compares a first potential, which is applied to a connection between the first switching device and the load, with the supply potential and provides a positive logic signal level on the output side, if the two compared Potentials in the freewheel are unequal; b) a second comparator, which compares a second potential of a connection between the second switching device and the load with the supply potential and provides a positive logic signal level on the output side, if the two potentials compared in free-running are unequal; c) a third comparator, which compares a third potential of a connection between the third switching device and the load with the ground potential and provides a positive logic signal level on the output side, if the two potentials compared in free-running are unequal; and d) a fourth comparator which compares a fourth potential of a connection between the fourth switching device and the load with the ground potential and provides a positive logic signal level on the output side if the two compared potentials in freewheel are unequal; and
- Evaluation device from the output side provided by the comparators signal level and thereby detects a line break, if no comparator freewheeling provides a positive signal level.
- the evaluation circuit assesses whether the drive was sufficient to generate a freewheel.
- At least one switching device is designed as a MOSFET, in particular as a power MOSFET. Due to the fact that the MOSFET already has a free-wheeling diode due to the technology, it is not necessary to provide a diode which is connected in parallel to the switching device when using a MOSFET.
- the four switching devices are each formed as a bipolar transistor and the respective diode as an external to the bipolar transistor connected in parallel diode.
- the four switching devices are each designed as a Darlington transistor and the respective diode as an external to the Darlington transistor connected in parallel diode.
- At least one switching device is designed as an IGBT (Insulated Gate Bipolar Transistor) and the respective diode is designed as an external diode connected in parallel with the respective IGBT.
- IGBT Insulated Gate Bipolar Transistor
- FIG. 1 is a schematic block diagram of a preferred embodiment of a circuit arrangement according to the invention for the continuous detection of a line break in a full bridge with freewheel to supply potential.
- Fig. 2 is a schematic block diagram of the preferred embodiment of the circuit arrangement according to the invention for the continuous detection of a line break in a full bridge at
- Fig. 3 is a schematic flow diagram of a preferred embodiment
- FIGS. 1 and 2 are provided to illustrate the circuit arrangement according to the invention.
- FIG. 1 shows the comparators 91 and 92 of a comparison device 90, which detect freewheel voltages when the load 4 is freewheeling according to the supply potential 6 and transmit the detected signal levels Pl, P2 to an evaluation device 10.
- the comparators 93 and 94 of the comparison device 90 are shown in FIG. 2, which detect free-wheeling voltages when the load 4 is freewheeling to ground potential 5 and transmit the detected signal levels P3, P4 to the evaluation device 10.
- FIG. 1 thus shows a schematic block diagram of a preferred exemplary embodiment of a circuit arrangement for the continuous detection of a line break 1 in the case of a full bridge 2 in the case of freewheeling according to the supply potential 6.
- the circuit arrangement has a full bridge 2.
- the full bridge 2 consists of four, operated between a supply potential Ubat and a ground potential UO switching devices 31-34. To each switching device 31-34, a diode 7 is connected in parallel.
- the full bridge 2 is used to control an inductive load. 4
- the circuit arrangement according to the invention further comprises a control circuit 8, which in each case generates a control signal S1-S4 for driving the switching devices 31-34, with which the switching devices 31-34 are each switchable.
- the control circuit 8 controls the first one
- control circuit 8 transmits exactly one of the four control signals S1-S4 with a short time delay for switching to a predeterminable switching device 31- 34, so that cross currents are avoided.
- the circuit arrangement according to the invention also has a second comparator 92, which compares a second potential U2 of the second switching device 32 and the load 4 with the supply potential Ubat and provides a positive logic signal level P2 on the output side if the second potential U2 is greater than the supply potential Ubat ( U2> Ubat).
- the circuit arrangement according to the invention has an evaluation device 10, which evaluates the output of the comparators 91,92 provided signal level Pl, P2 and thereby detects a line break 1, if no positive signal pulse Pl or P2 occurs within a drive cycle.
- FIG. 2 shows a schematic block diagram of the preferred exemplary embodiment of the circuit arrangement according to the invention for the continuous detection of the line break 1 in the case of the full bridge 2 in freewheeling to ground potential 5.
- the comparison device 90 of the invention Circuitry the comparators 93 and 94 on. On the output side, the third and fourth comparators 93, 94 as well as the first comparator 91 and the second comparator 92 are connected to the evaluation device 10.
- the third comparator 93 compares a third potential U3 of the connection of the third switching device 33 and the load 4 with the ground potential UO and provides on the output side a positive logic signal level P3, if the third potential U3 is less than the ground potential UO (U3 ⁇ U0).
- the fourth comparator 94 compares a fourth potential U4 of the connection of the fourth switching device 34 and the load 4 with the ground potential UO and provides on the output side a positive logic signal level P4 if the fourth potential U4 is lower than the ground potential UO (U4 ⁇ U0).
- FIG. 3 shows a schematic flow diagram of a preferred embodiment of the method according to the invention for the continuous detection of a line break 1 in the case of the full bridge 2, which can be carried out by means of the circuit arrangement according to FIGS. 1 and 2.
- Line break 1 is the operation of the load 4 with a
- Process step b Picking up a potential applied to a connection between the first switched switching device 31-34 and the load 4 potential U1-U4.
- the present invention has been described above with reference to the preferred embodiments, it is not limited thereto, but modified in many ways.
- any line breaks 1 at any position of the circuit be detected and assigned via a suitable evaluation.
- the four switching devices 31-34 shown in FIGS. 1 and 2 are here designed as a power MOSFET and the respective diode 7 as a parasitic diode of the power MOSFET.
- the four switching devices 31-34 according to FIGS. 1 and 2 can also be formed by any other switching devices, for example as bipolar transistors, as Darlington transistors or as IGBTs.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electronic Switches (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020077023806A KR101206885B1 (ko) | 2005-03-17 | 2006-01-25 | 단선을 검출하기 위한 방법 및 회로 어레인지먼트 |
US11/908,853 US7548070B2 (en) | 2005-03-17 | 2006-01-25 | Method and circuit arrangement for detecting a wire break |
DE502006009103T DE502006009103D1 (de) | 2005-03-17 | 2006-01-25 | Verfahren und schaltungsanordnung zur detektion eines leitungsbruches |
CN2006800084424A CN101185004B (zh) | 2005-03-17 | 2006-01-25 | 用于检测断线的方法和电路装置 |
EP06707830A EP1859288B1 (de) | 2005-03-17 | 2006-01-25 | Verfahren und schaltungsanordnung zur detektion eines leitungsbruches |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005012405A DE102005012405B3 (de) | 2005-03-17 | 2005-03-17 | Verfahren und Schaltungsanordnung zur Detektion eines Leitungsbruches |
DE102005012405.4 | 2005-03-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006097377A1 true WO2006097377A1 (de) | 2006-09-21 |
Family
ID=36179050
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/050426 WO2006097377A1 (de) | 2005-03-17 | 2006-01-25 | Verfahren und schaltungsanordnung zur detektion eines leitungsbruches |
Country Status (6)
Country | Link |
---|---|
US (1) | US7548070B2 (de) |
EP (1) | EP1859288B1 (de) |
KR (1) | KR101206885B1 (de) |
CN (1) | CN101185004B (de) |
DE (2) | DE102005012405B3 (de) |
WO (1) | WO2006097377A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005036769A1 (de) * | 2005-08-04 | 2007-02-08 | Siemens Ag | Verfahren zum Überprüfen einer induktiven Last |
JP5577724B2 (ja) * | 2010-02-02 | 2014-08-27 | 富士ゼロックス株式会社 | 状態検出装置およびプログラム |
FR3017958B1 (fr) * | 2014-02-21 | 2017-11-24 | Continental Automotive France | Detection de circuit ouvert dans une structure de commutation |
US9772367B2 (en) * | 2014-11-25 | 2017-09-26 | Dialog Semiconductor Inc. | Load connection detection |
JP6904664B2 (ja) * | 2016-03-02 | 2021-07-21 | 株式会社リコー | モータ接続検知装置及び方法、モータ駆動システム、並びにそれを適用した画像形成装置、及び搬送装置 |
CN106102441A (zh) * | 2016-08-09 | 2016-11-09 | 深圳翠涛自动化设备股份有限公司 | 一种焊线机的断线检测系统及方法 |
DE102016115493A1 (de) | 2016-08-22 | 2018-02-22 | Osram Gmbh | Überwachung eines optischen konverters |
WO2019222921A1 (en) * | 2018-05-22 | 2019-11-28 | Texas Instruments Incorporated | Method and circuitry for open load detection |
FR3087898B1 (fr) * | 2018-10-26 | 2021-08-06 | Continental Automotive France | Procede d'alimentation d'une charge inductive |
DE102018220861B3 (de) * | 2018-12-03 | 2020-04-02 | Conti Temic Microelectronic Gmbh | Verfahren zum Erkennen einer Funktionstüchtigkeit einer elektrischen Schalteinheit, Computerprogrammprodukt zum Ausführen eines derartigen Verfahrens sowie Vollbrückenschaltung mit einer Steuereinrichtung zum Ausführen eines derartigen Verfahrens |
KR102046583B1 (ko) | 2019-03-27 | 2019-11-19 | 콘티넨탈 오토모티브 시스템 주식회사 | 모터 구동 회로의 단선 진단 장치 및 방법 |
JP7067517B2 (ja) * | 2019-03-27 | 2022-05-16 | 株式会社Soken | アンテナ装置 |
JP2022051366A (ja) * | 2020-09-18 | 2022-03-31 | 株式会社東芝 | 半導体回路、及び半導体回路の故障判定方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5111123A (en) * | 1990-11-16 | 1992-05-05 | Delco Electronics Corporation | Motor driver interface fault detection apparatus using initial turn-on and noise timers |
US5592097A (en) * | 1992-09-03 | 1997-01-07 | Nec Corporation | Load open state detection using H-bridge driving circuit |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4403375A1 (de) * | 1993-03-04 | 1994-09-08 | Siemens Ag | Einrichtung und Verfahren zum Steuern eines induktiven Verbrauchers |
JP3375020B2 (ja) * | 1994-07-12 | 2003-02-10 | 株式会社デンソー | 双方向性流量制御弁の駆動回路 |
GB2380622B (en) * | 2001-10-05 | 2003-09-03 | Minebea Co Ltd | A motor control circuit |
-
2005
- 2005-03-17 DE DE102005012405A patent/DE102005012405B3/de not_active Expired - Fee Related
-
2006
- 2006-01-25 EP EP06707830A patent/EP1859288B1/de not_active Expired - Fee Related
- 2006-01-25 WO PCT/EP2006/050426 patent/WO2006097377A1/de not_active Application Discontinuation
- 2006-01-25 KR KR1020077023806A patent/KR101206885B1/ko active IP Right Grant
- 2006-01-25 CN CN2006800084424A patent/CN101185004B/zh not_active Expired - Fee Related
- 2006-01-25 DE DE502006009103T patent/DE502006009103D1/de active Active
- 2006-01-25 US US11/908,853 patent/US7548070B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5111123A (en) * | 1990-11-16 | 1992-05-05 | Delco Electronics Corporation | Motor driver interface fault detection apparatus using initial turn-on and noise timers |
US5592097A (en) * | 1992-09-03 | 1997-01-07 | Nec Corporation | Load open state detection using H-bridge driving circuit |
Also Published As
Publication number | Publication date |
---|---|
US20080143340A1 (en) | 2008-06-19 |
EP1859288A1 (de) | 2007-11-28 |
US7548070B2 (en) | 2009-06-16 |
CN101185004B (zh) | 2010-06-09 |
EP1859288B1 (de) | 2011-03-16 |
DE102005012405B3 (de) | 2006-09-14 |
KR101206885B1 (ko) | 2012-11-30 |
DE502006009103D1 (de) | 2011-04-28 |
KR20070120998A (ko) | 2007-12-26 |
CN101185004A (zh) | 2008-05-21 |
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