EP1235465A2 - Treiber für LED-Leuchten im Kfz - Google Patents
Treiber für LED-Leuchten im Kfz Download PDFInfo
- Publication number
- EP1235465A2 EP1235465A2 EP02002848A EP02002848A EP1235465A2 EP 1235465 A2 EP1235465 A2 EP 1235465A2 EP 02002848 A EP02002848 A EP 02002848A EP 02002848 A EP02002848 A EP 02002848A EP 1235465 A2 EP1235465 A2 EP 1235465A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- driver circuit
- voltage
- consumer
- resistor
- transistor
- 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
- H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
Definitions
- the present invention relates to a driver circuit to drive a consumer from a control unit, the consumer lying away from the control unit only within a specified operating voltage interval is operable.
- LEDs light emitting diodes
- LEDs have a current-voltage characteristic similar to zener diodes. Up to one certain voltage no current flows and therefore there is also no light emission. Then this tension exceeded, the current rises sharply and the LED begins to shine. In most cases, LEDs are used a series resistor operated, the current through the LEDs determined for a certain supply voltage.
- a protective circuit is proposed there, which the Rear light is assigned and the supply voltage for all three functions tail light, brake light and Flashing light controls, as well as for all functions on one regulates constant current, this with the combination light for the tail and brake lights on two different adjustable levels.
- LED failure detection circuit in this protective circuit intended. From this circuit there is a connection to the vehicle interface, which has at least 5 separate lines. A to supply the supply voltage, a return line for signaling a total failure of LED lights, one Return line for signaling individual failures of LEDs, an overvoltage protection line and at least a control line to control the constant current regulator.
- This circuit ensures the operational safety of the Rear light, even if the vehicle electrical system fluctuation in wide Areas rises and falls, but it has the disadvantage that a lot of individual lines between one central control unit for the rear light and the Protection circuit are necessary. Because the one revealed there Protection circuit in the rear light itself or at least must be located in the immediate vicinity of the order to be able to reliably generate the LED failure signals, and since the control unit in motor vehicles is often only at a central point, for example in the engine compartment of the Motor vehicle is provided inevitably arise due to the large number of lines required, the if necessary, short-circuit fuses and inevitably due to the large cable lengths high weight and high cost.
- the stand technology also followed the path at a central point to provide a driver for each luminaire that immediately connected to the existing digital control unit and which is the individual lights, i.e. flashing lights, Tail light and brake light supplied. This avoids then unnecessarily many individual cables between the control unit and the individual lights.
- a Driver circuit for driving a consumer in particular for driving LED lights from a control unit discloses where the consumer is removed from the driver circuit and control unit lying only within one predetermined operating voltage interval is operable.
- the invention is now characterized in that the Driver circuit itself to maintain a safe Operating state of the consumer a controllable Power source, a control element controlling the power source with a first input of a given reference voltage (VCC) and a second input for feeding the control voltage for the consumer.
- VCC reference voltage
- an evaluation of a measured variable to determine the LED operability status without a separate, parallel to the consumer, especially to the luminaire Resistance is done by placing a between the positive Supply voltage working in series with the consumer Ohmic test resistance is provided, the Voltage drop between a higher voltage value and a lower voltage value for the purpose of detection the operability of the consumer of an evaluation circuit is fed away from the consumer.
- the driver circuit according to the invention is preferably such provided that a driver an LED light assembly drives. It is preferably a single one Connecting line between driver and light provided, which is also used to monitor the status of the Consumer evaluable.
- the evaluation circuit preferably contains a rail-to-rail differential amplifier in order to amplify the test voltage drop.
- the differential amplifier is one of its input voltage difference proportional voltage at the emitter resistor generated a conversion transistor, also in the sense resistor on the collector of the conversion transistor a current proportional to the input voltage difference is impressed so that a voltage as a sense voltage Can be tapped, the voltage drop across the test resistor is proportional, so is safe and inexpensive Realization of the measurement principle.
- the circuit according to the invention is inexpensive and reliably producible.
- Fig. 1 shows the application a driver circuit according to the invention for an LED rear light in the automotive sector.
- the right part of the drawing visibly breaks into two Areas: The left area is the actual driver circuit, whereas the right area is the real one LED light arrangement represents. Both areas are separated from each other by a dashed line 10.
- the LED lighting arrangement, as a whole with reference numerals 8 is provided with the driver circuit according to the invention advantageously only by one Supply cable 12 connected.
- the driver circuit itself is present in a processor-operated control unit and has the five connecting lines to it 14, 16, 18, 20 and 22.
- the supply line of the driver circuit 24 comes out the output 24 of the driver circuit and is connected to a Line connector 26 with a considerable length outgoing supply line 12 connected to the LED light assembly 8.
- management 14 is a control line through which the switching on and off the so-called open-load test can be controlled can. This is explained in more detail below.
- Line 16 is the battery voltage supply line.
- Line 18 is a control line connected to a reference voltage VCC is occupied by +5 volts.
- Line 20 can for switching the entire driver circuit on and off, as well as for pulse width modulation control up to the kilohertz range can be used.
- Line 22 is one Status line, about the current level of the state the supply voltage and various short-circuit situations can be queried, which is further below is explained.
- transistors T1, T2 and T3 is a voltage regulator built with the two inputs 18 and 19, the outgoing of the voltage in the control unit for the processor supply the output voltage for the LED light 8 limited to a predetermined value.
- transistor T1 is a power transistor that is considered controllable Power source represents the driver's power current path. It is on the emitter side via a series resistor R1 connected to the supply voltage, which in the operating state can fluctuate between 9 and 32 volts. In However, the operating voltage is only regular fluctuate between 9 and 16 volts.
- the collector of T1 is with the output of the driver and the supply line connected for the LED light 8.
- the base of the transistor T2 is connected to a reference voltage of 5 volts, whereas the base of transistor T3 via Zener diode is connected to ground.
- the collector of Transistor T2 is connected to the base via a series resistor R3 of the power transistor T1 connected.
- the two Emitters of T2 and T3 are interconnected and form a node between them, at which in the switched on Condition is relatively low potential, its size by the size of the resistor R4 is essentially determined.
- R4 lies over the emitter-collector path of transistor T4 directly to ground.
- the voltage regulator constructed with the transistors T1, T2 and T3 limits the output voltage in the direction LED light arrangement depending on that in the control unit existing voltage VCC.
- Transistors T2 and T3 represent a differential amplifier, the reference voltage VCC with that through resistors R5 and R6 + R7 divided output voltage of transistor T1 compares and the control of the transistor T1 through the transistor T2 prevented by the parallel to the Transistor T2 lying transistor T3 takes over the current and thus blocks the transistor T2.
- LED light arrangement 8 are for reasons of clarity only 3 LEDs are drawn in, which have a Series resistor and a blocking diode are protected. Of further an ohmic resistance is parallel to the LEDs. This serves as a measuring resistor, what follows below is still received.
- the inventive design of the driver circuit can now advantageously different Failure situations on or around the LED light arrangement be recognized around.
- a short circuit to plus by a positive signal on the status line can be recognized for an operating state by the Transistor switch T4 is not driven, that is in the driver is switched off.
- the short circuit situation after plus is by a positive level on the Status line recognizable, which is just below the reference voltage is just below 5 volts in the example, see also the left area of Fig. 1, bottom line.
- a short circuit to minus by a very low level near zero on the status line are recognized in an operating state in which the switch is on, that is transistor T4 Pass has switched.
- the regular, error-free operating state is at a level through the left pulse of 5 volts.
- a so-called open-load test circuit mapped essentially by a switchable constant current source from the transistors T5 and T6, the diodes D4, D5 and the resistors R8, R9 and R10, and resistors R5, R6 and R7 on the status line is formed.
- the task of the constant current source is when it is through Switch on on test line 14 via the transistor switch T6 and resistor R10 switched to continuity is a measuring current of small size when switched off State of the main switch T4 to the LED light 8 bring that does not make the LEDs glow, probably but on the ohmic connected in parallel with the LEDs 31 Resistor 34 such a significant drop in voltage causes that this detects on the status line 22 and can be evaluated. In the open-load failure situation can no longer flow through the LEDs flow. As a direct result, a much smaller one flows Current through lead 12 and resistor 34, which raised the potential at the output of transistor T1 becomes.
- the error pulse of the openload failure situation results, near the reference voltage of 5 volts as it is on the second line in the left pane 1.
- a medium level As from the one above
- the test signal is at the test input 14 a simple square wave signal between 0 volts and 5 volts.
- resistor R8 together with the diode pair D4, D5 has the task of the measuring transistor To protect T5 from excessive currents, in analog Shape as it is for the power transistor T1 above has already been described.
- the driver circuit shown and described can advantageously be combined with a control unit be by a fixed voltage regulator with an accuracy of 2% is used, so that the above-mentioned 12 volt limitation with an accuracy of about 5% is sufficiently precise for practice.
- the output transistor T1 is so formed should be that for about 100 milliseconds is short-circuit proof, so there is enough time for the processor of the control unit remains to switch it off in time.
- FIG. 2 A further, advantageous embodiment of an exemplary embodiment of the driver circuit according to the invention is shown in FIG. 2 in a schematic circuit diagram.
- the driver circuit shown there has the advantage that the current through the LED lamp arrangement 8 can also be measured in the switched-on state without the parallel resistor 34 shown in FIG. 1.
- Fig. 2 corresponds essentially to that lower right part of Fig. 1, particularly with regard the power transistor T1, which also limits current is also a voltage regulator with T2 and T3 forms. In this respect, the previous description directed.
- a voltage drop across the Power transistor T1 upstream shunt resistor which serves to limit the current of the driver circuit, evaluated, to the current through the lamp when switched on Being able to measure and evaluate the condition.
- a rail-to-rail input operational amplifier is proposed 60 to use the one downstream transistor 70 ensures that the voltage measured at the shunt resistor R1 also changes at the emitter resistor 72 of the downstream transistor 70 sets.
- the resulting electricity is made up of the current through the collector-emitter path of transistor 70 plus the current through the base-emitter path. Since the latter less than Is 1% of the collector current, this proportion is negligible.
- the collector current of the measuring circuit is in the stationary state on the left edge of Fig. 2 the output current of Driver proportional. Therefore, the collector current generates at the collector resistor 74 a sense voltage that in turn proportional to the output current of the LED driver and via an analog input of the control unit processor (not shown) can be measured.
- the Rail-to-rail input operational amplifier is for supply voltages designed up to about 16 volts, however a low power consumption. To him against high tensions To protect it, a corresponding Zener diode 64 is required connected in parallel. Its power supply is over led a series resistor 66. To the quiescent current of This circuit part is to keep the circuit low can be switched on and off by a transistor 62 (see above).
- the driver circuit shown allows current measurement from a few milliamperes to the current limitation of the driver itself. This allows levels for open-load and overload during manufacturing or later at a given Exchange of a lamp with possibly others Operating parameters in a vehicle workshop in the store of the control unit processor.
- the one shown Circuit is therefore largely universal. As key data are just the output voltage and current limit fixed, but with 500 mA all previous LED lights are enough. The concept is open to future ones LED lamp arrangements that use less power at the same Consume light emission. This is also shown in Fig. illustrated.
- Fig. 3 shows a sense voltage characteristic as a function of the output current, with high linearity.
- the sense voltage is proportional to the current.
- the configuration according to the invention allows the driver circuit with open load detection when switched on Condition and without one parallel to the consumer switched resistance a current measurement of some Milliamps up to the current limit of the driver itself.
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Led Devices (AREA)
Abstract
Description
Die Auswerteschaltung enthält in bevorzugter Weise einen rail-to-rail Differenzverstärker, um den Testspannungsabfall zu verstärken.
- Fig. 1
- ein Schaltschema der erfindungsgemäßen Treiberschaltung gemäß ihrem ersten Aspekt (rechts) mit zugehörigen, typischen Spannungsverläufen auf den unterschiedlichen Eingangsleitungen des Treibers (links),
- Fig. 2
- ein Schaltschema der erfindungsgemäßen Treiberschaltung gemäß einem zweiten Aspekt, und
- Fig. 3
- eine Sense-Spannungskennlinie in Abhängigkeit vom Ausgangsstrom, mit hoher Linearität, die Universalität der Schaltung zeigend.
Claims (17)
- Treiberschaltung zum Treiben eines Verbrauchers (8,31) von einem Steuergerät aus, wobei der Verbraucher entfernt von Treiberschaltung und Steuergerät liegend nur innerhalb eines vorgegebenen Betriebsspannungsintervall betreibbar ist, dadurch gekennzeichnet, dass die Treiberschaltung selbst zwecks Schutzbeschaltung zur Aufrechterhaltung eines sicheren Betriebszustands des Verbrauchers eine steuerbare Stromquelle (T1), ein die Stromquelle ansteuerndes Regelelement (T2,T3) mit einem ersten Eingang (18) von einer vorgegebenen Referenzspannung (VCC) und einen zweiten Eingang (19) zur Zuführung der Regelspannung für den Verbraucher (8,31) aufweist.
- Treiberschaltung nach Anspruch 1, mit nur einer einzigen Verbindungsleitung zwischen Treiber und Leuchte, wobei das auf der Verbindungsleitung laufende Signal zur Statusüberwachung des Verbrauchers ausgewertet wird.
- Treiberschaltung nach Anspruch 1, wobei das Regelelement (T2,T3) einen Steuerstrom für die Stromquelle (T1) ausgibt, der die Regelspannung sinken läßt, wenn diese infolge zu niedrigen Widerstands der Stromquelle für den Verbraucher zu hoch ist, und der die Regelspannung steigen läßt, wenn diese infolge zu großen Widerstands der Stromquelle zu niedrig ist.
- Treiberschaltung nach Anspruch 1, wobei die Stromquelle einen Leistungstransistor (T1) als Stromquelle für den Verbraucher enthält, an dessen Ausgang die Versorgungsspannung für den Verbraucher anliegt, und wobei das Regelelement ein Differenzverstärker (T2,T3,R5,R6,R7) ist, dessen einer Eingang mit einer Referenzspannung und dessen anderer Eingang mit der Regelspannung verbunden ist.
- Treiberschaltung nach Anspruch 1, wobei die Referenzspannung der Basis eines ersten Transistors (T2) und die Regelspannung der Basis eines zweiten Transistors (T3) des Differenzverstärkers zugeführt ist.
- Treiberschaltung nach Anspruch 1, wobei dem Leistungstransistor (T1) ein Vorwiderstand (R1) vorgeschaltet ist, und eine Mehrzahl an hintereinander geschalteten Dioden, bevorzugt zwei Dioden (D1,D2) parallel zum Leistungstransistor geschaltet sind.
- Treiberschaltung nach Anspruch 1, wobei eine Einschalt-Signalleitung (20) zumindest einen der beiden Transistoren (T2,T3) über einen Widerstand (R4) vorgegebener Größe mit Massepotential mit einem Schaltelement (T4) verbindet, das dadurch bei Ansteuerung an der Basis auf Durchlaß schaltbar ist.
- Treiberschaltung nach Anspruch 1, wobei eine Konstantstromquelle (T5,T6,D4,D5,R8,R9,R10) mit dem Verbrauchereingang (12) verbunden ist, die dazu eingerichtet ist, einen Meßstrom durch einen zum Verbraucher (8,31) parallel geschalteten Widerstand (34) zu treiben, dessen Größe zur Auswertung in der Treiberschaltung selbst dient.
- Treiberschaltung nach Anspruch 1, wobei die Konstantstromquelle (T5,T6,D4,D5,R8,R9,R10) mit einem Eingangstransistor (T6) ein- und ausschaltbar ist, der bei Durchgang einen Meßstromtransistor (T5) als Stromquelle für den Meßstrom auf Durchgang schaltet.
- Treiberschaltung nach dem vorstehenden Anspruch, wobei dem Meßstromtransistor (T5) ein Vorwiderstand (R8) vorgeschaltet ist, und zwei hintereinander geschaltete Dioden (D4,D5) zu ihm parallel geschaltet sind.
- Treiberschaltung nach einem der Ansprüche 1 bis 7, wobei ein zwischen der positiven Versorgungsspannung in Reihe mit dem Verbraucher (8,31) arbeitender Ohm'scher Test-Widerstand (R1) vorgesehen ist, dessen Spannungsabfall zum Zwecke der Feststellung der Betriebsfähigkeit des Verbrauchers (30) einer Auswerteschaltung entfernt vom Verbraucher (30) zugeführt ist.
- Treiberschaltung nach dem vorstehenden Anspruch, wobei die Auswerteschaltung einen rail-to-rail Differenzverstärker (70) enthält.
- Treiberschaltung nach dem vorstehenden Anspruch, dafür eingerichtet, dass der Differenzverstärker (70) eine zu seiner Eingangsspannungsdifferenz proportionale Spannung an einem Emitter-Widerstand (72) eines Umsetztransistors (70) erzeugt, wobei in einem Sense-Widerstand (74) am Kollektor des Umsetztransistors ein der Eingangsspannungsdifferenz proportionaler Strom einprägbar ist, so daß eine Spannung als Sense-Spannung abgreifbar ist, die zum Spannungsabfall an dem Testwiderstand proportional ist.
- Treiberschaltung nach dem vorstehenden Anspruch, wobei zum Differenzverstärker (70) eine Zenerdiode (74) zwecks Absicherung parallel geschaltet ist.
- Treiberschaltung nach dem vorstehenden Anspruch, wobei die Versorgungsspannung des Differenzverstärkers (70) über ein Schaltelement (T20) ein- und auschaltbar ist.
- Treiberschaltung nach dem vorstehenden Anspruch, wobei zwischen Versorgungspotential (9..16V) und erstem Eingang des Differenzverstärkers (70) ein erster Widerstand (R8) vorgegebener Größe geschaltet ist, und ein zweiter Widerstand (R9) vorgegebener Größe zwischen dem ersten und einem dritten Widerstand (72) vorgegebener Größe geschaltet ist, wobei der dritte Widerstand (72) auf Versorgungspotential liegt.
- Treiberschaltung nach einem der vorstehenden Ansprüche, deren Elemente bis auf die Leistungsbauteile (T1, R1) als integrierter Schaltkreis (IC) ausgeführt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10108132 | 2001-02-21 | ||
DE10108132A DE10108132A1 (de) | 2001-02-21 | 2001-02-21 | Treiber für LED-Leuchten im Kfz |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1235465A2 true EP1235465A2 (de) | 2002-08-28 |
EP1235465A3 EP1235465A3 (de) | 2005-01-12 |
EP1235465B1 EP1235465B1 (de) | 2007-05-23 |
Family
ID=7674853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02002848A Expired - Lifetime EP1235465B1 (de) | 2001-02-21 | 2002-02-08 | Treiber für LED-Leuchten im Kfz |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1235465B1 (de) |
DE (2) | DE10108132A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006019897A2 (en) * | 2004-08-04 | 2006-02-23 | Ng James K | Led lighting system |
AT511094A4 (de) * | 2011-03-25 | 2012-09-15 | Thales Austria Gmbh | Anordnung zur zustandsüberwachung eines leuchtmittels |
CN106993351A (zh) * | 2015-10-14 | 2017-07-28 | 大陆汽车有限公司 | 用于探测多个发光二极管中的至少一个发光二极管的缺陷的诊断装置和方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10336973B4 (de) * | 2003-08-12 | 2016-12-29 | Hella Kgaa Hueck & Co. | Verfahren zur Überwachung einer Leuchtdiode |
JP2007200610A (ja) | 2006-01-24 | 2007-08-09 | Koito Mfg Co Ltd | 車両用灯具の点灯制御装置 |
DE102007009104B4 (de) | 2007-02-24 | 2011-04-14 | Lear Corporation Gmbh | Steuerschaltung zum getakteten Ansteuern mindestens einer Leuchtdiode |
DE102011050908A1 (de) * | 2011-06-08 | 2012-12-13 | Dietmar Müller | Leuchtdiodenlampe und Schaltung zur Steuerung einer Lichtquelle |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19734750A1 (de) | 1997-08-12 | 1999-02-18 | Reitter & Schefenacker Gmbh | Heckleuchte von Kraftfahrzeugen |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19846753A1 (de) * | 1998-10-07 | 2000-04-13 | Siemens Ag | Schaltungsanordnung zum Betreiben eines Leuchtzeichens |
DE19852351A1 (de) * | 1998-11-13 | 2000-05-18 | Hella Kg Hueck & Co | Diagnosesystem für eine LED-Leuchte in einem Kraftfahrzeug |
DE19905709A1 (de) * | 1999-02-11 | 2000-08-31 | Siemens Ag | Verfahren zum Erkennen eines Lampenausfalls und Lampenausfalldetektionsvorrichtung |
-
2001
- 2001-02-21 DE DE10108132A patent/DE10108132A1/de not_active Withdrawn
-
2002
- 2002-02-08 DE DE50210182T patent/DE50210182D1/de not_active Expired - Lifetime
- 2002-02-08 EP EP02002848A patent/EP1235465B1/de not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19734750A1 (de) | 1997-08-12 | 1999-02-18 | Reitter & Schefenacker Gmbh | Heckleuchte von Kraftfahrzeugen |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006019897A2 (en) * | 2004-08-04 | 2006-02-23 | Ng James K | Led lighting system |
WO2006019897A3 (en) * | 2004-08-04 | 2006-05-18 | James K Ng | Led lighting system |
AT511094A4 (de) * | 2011-03-25 | 2012-09-15 | Thales Austria Gmbh | Anordnung zur zustandsüberwachung eines leuchtmittels |
AT511094B1 (de) * | 2011-03-25 | 2012-09-15 | Thales Austria Gmbh | Anordnung zur zustandsüberwachung eines leuchtmittels |
CN106993351A (zh) * | 2015-10-14 | 2017-07-28 | 大陆汽车有限公司 | 用于探测多个发光二极管中的至少一个发光二极管的缺陷的诊断装置和方法 |
US10288670B2 (en) | 2015-10-14 | 2019-05-14 | Continental Automotive Gmbh | Diagnosis apparatus and method for detecting a defect of at least one of a plurality of light emitting diodes |
CN106993351B (zh) * | 2015-10-14 | 2019-07-16 | 大陆汽车有限公司 | 用于探测至少一个发光二极管的缺陷的诊断装置和方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1235465B1 (de) | 2007-05-23 |
EP1235465A3 (de) | 2005-01-12 |
DE50210182D1 (de) | 2007-07-05 |
DE10108132A1 (de) | 2002-08-29 |
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