EP0852892B1 - Method and device for controlling the power of a high-pressure gas-discharge lamp - Google Patents
Method and device for controlling the power of a high-pressure gas-discharge lamp Download PDFInfo
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- EP0852892B1 EP0852892B1 EP96919634A EP96919634A EP0852892B1 EP 0852892 B1 EP0852892 B1 EP 0852892B1 EP 96919634 A EP96919634 A EP 96919634A EP 96919634 A EP96919634 A EP 96919634A EP 0852892 B1 EP0852892 B1 EP 0852892B1
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- displacement
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000008859 change Effects 0.000 claims abstract description 14
- 238000006073 displacement reaction Methods 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
-
- 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
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
- H05B41/39—Controlling the intensity of light continuously
- H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
- H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
-
- 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
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
- H05B41/2881—Load circuits; Control thereof
- H05B41/2882—Load circuits; Control thereof the control resulting from an action on the static converter
-
- 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
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
- H05B41/382—Controlling the intensity of light during the transitional start-up phase
- H05B41/386—Controlling the intensity of light during the transitional start-up phase for speeding-up the lighting-up
Definitions
- the invention is based on a method for power control a high-pressure gas discharge lamp in the preamble of Claim 1 defined genus.
- From US 42 40 009 is a circuit for operating a Gas discharge lamp is known, which supplied the lamp Performance determined using a characteristic curve.
- the control unit contains a power supply circuit. This is done using the voltage / current characteristic controlled and regulated so that the Lamp in operation on a certain, especially constant Performance is maintained. In this known circuit this is done the power is determined using a wattmeter, that of a regulated inverter circuit from a battery supplied power from applied voltage and flowing Current determined and from it according to the given Voltage / current characteristic curve control signals for the Inverter circuit generated. With constant performance for the lamp is the respective operating point on the so-called Performance hyperbole.
- the Vedilis curve is generally specified as a current / voltage curve in the sense of a setpoint curve.
- the Vedilis curve is shown in the "System Specifications for Field Test" of the VEDILIS Eureka Project 273 on page B 1/3 and is specified as a current / voltage characteristic for gas discharge lamps to be used in motor vehicles.
- "Vedilis” stands for " V ehicle D ischarge L ight S ystem".
- the lamp voltage U is then measured in the start-up or burning phase and the corresponding lamp current I associated with the respective lamp voltage U is determined from the Vedilis curve.
- This lamp current I then serves as a setpoint for the current control circuit, with which the lamp power is regulated to a constant value, for example 35 W.
- the inventive method for controlling the power High pressure gas discharge lamp with the characteristic features of claim 1 has the advantage of creating a effective change in lamp output with simple Funding is done and is therefore very inexpensive. It offers the Possibility of using the entire width when using only one characteristic to cover the change in performance.
- the implementation can or hardware.
- the principle is to change the performance specifically shifted the voltage / current characteristic, in particular by manipulating one or more input variables of the Curve.
- the shift of the characteristic curve along the voltage axis or the current axis or simultaneously along both axes he follows.
- the shift advantageously takes place in the hyperbolic area of the characteristic, being the characteristic is in particular a so-called Vedilis characteristic.
- the characteristic curve is shifted by adding or subtracting step values or of continuously variable sizes, the step values or continuously variable sizes, from the size of the desired performance change are dependent.
- Embodiment of the invention which the storage of various Avoids performance hyperbola and thus storage space or Saves computing time, the performance change takes place through Shifting a characteristic curve with only one existing, stored characteristic curve in particular. This also becomes a Avoid flickering of light, which changes when changing from one performance hyperbole to the other would result, since none continuous, but only a sudden transition is.
- a particularly advantageous and expedient embodiment of a Arrangement for performing the method according to the invention is characterized in that in the control circuit Microcontroller is provided and that moving the Characteristic curve takes place in software, in particular by addition or Subtraction from corresponding step values or from continuously variable quantities to the tax values which be supplied to an intended actuator.
- An alternative advantageous embodiment of an arrangement for Carrying out the method according to the invention includes that in the control circuit an ASIC (specified by application integrated circuit) is provided, and that through them the Hardware shifting of the characteristic takes place, in particular by adding or subtracting corresponding step values or from continuously variable values to the control values, which are fed to an intended actuator.
- ASIC specified by application integrated circuit
- FIG. 1 schematically shows the sequence of the invention designed method for power control of a high pressure gas discharge lamp 1 shown.
- a microcontroller 2 is included. This outputs a setpoint or manipulated value 4 to an actuator 3, which is used to control the high-pressure gas discharge lamp 1 output is used.
- the microcontroller 2 is a Voltage value 5 supplied to that measured on the lamp 1 Voltage or a comparable size.
- the Actuator 3 can be a control loop, for example for the current, be subordinate.
- the microcontroller 2 becomes a value 6 supplied, as shown, or it becomes an appropriate value generated by the microcontroller itself. This value 6 means the change in performance according to the invention by a targeted Shift of the characteristic. This is done in particular by the Manipulation of one or more input variables of the characteristic.
- the hyperbolic part of the diagram of a so-called Vedilis characteristic curve 21 is schematically entered in the block representing the microcontroller 2.
- This is a voltage / current characteristic curve according to which, for example when the voltage U is specified, the current I is determined as the setpoint or manipulated value. It is now assumed that the lamp 1 is operated at an operating point 22. In this operating point 22 at an impressed current I 1, a voltage U 1 is formed. The performance is now to be reduced. In addition, the corresponding information comes into the microcontroller 2 as a value 6, or the latter generates the corresponding information itself. The microcontroller 2 then increases the voltage value U 1 corresponding to the applied power by the amount of change ⁇ U to the value U 2 , corresponding to point 27.
- this voltage value U corresponding current value I 2 2 is determined from the characteristic curve 21 and supplied as a new setpoint or control value 4 to the actuator.
- the lamp 1 accordingly receives a lower power corresponding to this current I 2 and the voltage U 1 , which is actually still approximately present. Depending on the lamp, the voltage changes somewhat. This lower output corresponds to the power hyperbole or characteristic curve 23 with the operating point 24 shown in dashed lines. If the desired increase in power is required, the process is reversed and the characteristic curve 25 shown with dashed lines with an operating point 26 then applies.
- the power can also be measured in an analogous manner along the current axis I respectively.
- the type of characteristic and the type and size of the Desired change in performance can be the best appropriate direction or a combination of both methods of Shift can be selected.
- the shift is to be implemented particularly flexibly and expediently if a Microcontroller is provided in the control unit. Then the Software shift.
- the Shift a certain, the desired line change corresponding step value to or from which actually Existing voltage or current value added or subtracted.
- An addition or subtraction of steps is software in a microcontroller is particularly easy to implement.
- the shift also allows the memory of the Microcontroller only a single characteristic is stored. This saves space. Depending on the configuration, it can also save considerable computing time, especially if at each input value for the characteristic curve found on the lamp by calculating the associated other value for the lamp must be determined.
- the present method is one excellent basis for an ASIC implementation of the Functions of the microcontroller and possibly for a hardware Realization of the Vedilis characteristic.
- an alternative advantageous embodiment includes an arrangement for performing the invention Process that an ASIC, a integrated circuit specified according to the application and that by moving the characteristic hardware, in particular by addition or Subtraction from corresponding step values or from continuously variable quantities to the tax values which be supplied to an intended actuator.
- the Power doesn't have to be calculated during runtime, it is neither an analog nor a digital arithmetic circuit required.
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- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
Description
Die Erfindung geht aus von einem Verfahren zur Leistungssteuerung einer Hochdruck-Gasentladungslampe der im Oberbegriff des Anspruchs 1 definierten Gattung.The invention is based on a method for power control a high-pressure gas discharge lamp in the preamble of Claim 1 defined genus.
Aus US 42 40 009 ist eine Schaltung zum Betreiben einer Gasentladungslampe bekannt, welche die der Lampe zugeführte Leistung anhand einer Kennlinie ermittelt. Das Steuergerät enthält eine Leistungsversorgungsschaltung. Diese wird mittels der Spannungs-/Strom-Kennlinie gesteuert und geregelt, so daß die Lampe im Betrieb auf einer bestimmten, insbesondere konstanten Leistung gehalten wird. Bei dieser bekannten Schaltung wird dazu die Leistungsermittlung mittels eines Wattmeters durchgeführt, der die einer geregelten Inverterschaltung von einer Batterie zugeführte Leistung aus anliegender Spannung und dabei fließendem Strom ermittelt und daraus entsprechend der vorgegebenen Spannungs-/Strom-Kennlinie Steuerungssignale für die Inverterschaltung erzeugt. Bei Einhaltung konstanter Leistung für die Lampe liegt der jeweilige Betriebspunkt auf der sogenannten Leistungshyperbel.From US 42 40 009 is a circuit for operating a Gas discharge lamp is known, which supplied the lamp Performance determined using a characteristic curve. The control unit contains a power supply circuit. This is done using the voltage / current characteristic controlled and regulated so that the Lamp in operation on a certain, especially constant Performance is maintained. In this known circuit this is done the power is determined using a wattmeter, that of a regulated inverter circuit from a battery supplied power from applied voltage and flowing Current determined and from it according to the given Voltage / current characteristic curve control signals for the Inverter circuit generated. With constant performance for the lamp is the respective operating point on the so-called Performance hyperbole.
Zur Steuerung beim Anlauf sowie beim Betrieb einer Hochdruck-Gasentladungslampe ist generell die Vedilis-Kurve als Strom/Spannungskurve im Sinne einer Sollwertkurve vorgegeben. Die Vedilis-Kurve ist in den "System Specifications for Field Test" des VEDILIS Eureka Project 273 auf Seite B 1/3 dargestellt und als Strom-/Spannungskennlinie für in Kraftfahrzeugen einzusetzende Gasentladungslampen vorgegeben. Dabei steht "Vedilis" als Abkürzung für "Vehicle Discharge Light System". Zur Regelung der Lampenleistung einer Gasentladungslampe wird danach in der Anlauf- bzw. Brennphase z.B. die Lampenspannung U gemessen und aus der Vedilis-Kurve der entsprechende, zur jeweiligen Lampenspannung U gehörige Lampenstrom I ermittelt. Dieser Lampenstrom I dient dann als Sollwert für den Stromregelkreis, mit dem die Lampenleistung auf einen konstanten Wert, z.B. 35 W geregelt wird.For control during start-up and when operating a high-pressure gas discharge lamp, the Vedilis curve is generally specified as a current / voltage curve in the sense of a setpoint curve. The Vedilis curve is shown in the "System Specifications for Field Test" of the VEDILIS Eureka Project 273 on page B 1/3 and is specified as a current / voltage characteristic for gas discharge lamps to be used in motor vehicles. "Vedilis" stands for " V ehicle D ischarge L ight S ystem". To regulate the lamp power of a gas discharge lamp, the lamp voltage U is then measured in the start-up or burning phase and the corresponding lamp current I associated with the respective lamp voltage U is determined from the Vedilis curve. This lamp current I then serves as a setpoint for the current control circuit, with which the lamp power is regulated to a constant value, for example 35 W.
Generell ist es zur Nutzung einer Gasentladungslampe im Kraftfahrzeugscheinwerfer notwendig, möglichst viel Licht innerhalb kurzer Zeit nach dem Einschalten des Steuergerätes zur Verfügung zu stellen. Dies wird als schneller Lichtanlauf bezeichnet. Wie die o.g. Vedilis-Kurve vorgibt, kann dazu die Gasentladungslampe direkt nach dem Einschalten mit einer bestimmten Überlast betrieben werden. Diese Überlast wird dann nach Erreichen einer bestimmten Spannung in Abhängigkeit von der Lampenspannung zurückgefahren. Dieses Zurückfahren geschieht entlang dem hyperbolischen Teil der Kennlinie. Es ist klar, daß durch eine derartige Überlast die Lampe nicht zerstört oder in ihrer Lebensdauer beeinträchtigt werden darf. Diese Forderung ist für alle Betriebsbedingungen einzuhalten. Des weiteren ist die Steuerung so zu wählen, daß die Lichtleistung nicht von einem bereits erreichten Wert wieder zurückschwingt, da dies allgemein als unangenehmes Flackern empfunden wird. Dieses Zurückschwingen der Lichtleistung wird auch als Lichtsattel bezeichnet. Generally it is to be used with a gas discharge lamp Motor vehicle headlights necessary, as much light as possible within a short time after switching on the control unit To make available. This is called a quick light start designated. Like the above Vedilis curve specifies this Gas discharge lamp immediately after switching on with a certain overload are operated. This overload will then after reaching a certain voltage depending on the Lamp voltage reduced. This retraction happens along the hyperbolic part of the characteristic. It is clear that by such an overload the lamp is not destroyed or in their lifespan may be impaired. This requirement is for all operating conditions. Furthermore, it is Select control so that the light output is not from one already reached value swings back, as this is general is perceived as an unpleasant flickering. This swinging back the light output is also called light saddle.
Das erfindungsgemäße Verfahren zur Leistungssteuerung einer Hochdruck-Gasentladungslampe mit den kennzeichnenden Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil der Schaffung einer wirksamen Leistungsveränderung der Lampe, welche mit einfachen Mitteln erfolgt und daher sehr kostengünstig ist. Es bietet die Möglichkeit bei der Nutzung nur einer Kennlinie die ganze Breite der Leistungsänderung abzudecken. Die Realisierung kann soft- oder hardwaremäßig erfolgen.The inventive method for controlling the power High pressure gas discharge lamp with the characteristic features of claim 1 has the advantage of creating a effective change in lamp output with simple Funding is done and is therefore very inexpensive. It offers the Possibility of using the entire width when using only one characteristic to cover the change in performance. The implementation can or hardware.
Gemäß der Erfindung wird prinzipiell zur Veränderung der Leistung die Spannungs-/Strom-Kennlinie gezielt verschoben, insbesondere durch Manipulation einer oder mehrerer Eingangsgrößen der Kennlinie.According to the invention, the principle is to change the performance specifically shifted the voltage / current characteristic, in particular by manipulating one or more input variables of the Curve.
In vorteilhafter Ausgestaltung der Erfindung ist dazu vorgesehen, daß die Verschiebung der Kennlinie entlang der Spannungsachse oder der Stromachse oder gleichzeitig entlang beider Achsen erfolgt. Vorteilhafterweise erfolgt die Verschiebung im hyperbolischen Bereich der Kennlinie, wobei die Kennlinie insbesondere eine sogenannte Vedilis-Kennlinie ist.In an advantageous embodiment of the invention, that the shift of the characteristic curve along the voltage axis or the current axis or simultaneously along both axes he follows. The shift advantageously takes place in the hyperbolic area of the characteristic, being the characteristic is in particular a so-called Vedilis characteristic.
Gemäß einer besonders zweckmäßigen Ausgestaltung der Erfindung, welche sich insbesondere durch große Flexibilität, Anpassungsfähigkeit und Kostengünstigkeit auszeichnet, erfolgt die Verschiebung der Kennlinie softwaremäßig mit Hilfe eines vorgesehenen Mikrokontrollers. In einer vorteilhaften und zweckmäßigen Weiterbildung erfolgt die Verschiebung der Kennlinie durch Addition oder Subtraktion von Schrittwerten oder von kontinuierlich veränderbaren Größen, wobei die Schrittwerte bzw. kontinuierlich veränderbaren Größen, von der Größe der gewünschten Leistungsänderung abhängig sind.According to a particularly expedient embodiment of the invention, which is particularly characterized by great flexibility, Adaptability and cost-effectiveness the shift of the characteristic curve in software using a provided microcontroller. In an advantageous and expedient training, the characteristic curve is shifted by adding or subtracting step values or of continuously variable sizes, the step values or continuously variable sizes, from the size of the desired performance change are dependent.
Entsprechend einer besonders vorteilhaften und zweckmäßigen Ausgestaltung der Erfindung, welche die Speicherung verschiedener Leistungshyperbeln vermeidet und damit Speicherplatz oder Rechenzeit einspart, erfolgt die Leistungsänderung durch Verschiebung einer Kennlinie bei nur einer einzigen vorhandenen, insbesondere abgespeicherten Kennlinie. Dadurch wird auch ein Flackern des Lichtes vermieden, welches sich beim Wechsel von einer Leistungshyperbel zur anderen ergeben würde, da dabei kein kontinuierlicher, sondern nur ein sprunghafter Übergang vorhanden ist.According to a particularly advantageous and expedient Embodiment of the invention, which the storage of various Avoids performance hyperbola and thus storage space or Saves computing time, the performance change takes place through Shifting a characteristic curve with only one existing, stored characteristic curve in particular. This also becomes a Avoid flickering of light, which changes when changing from one performance hyperbole to the other would result, since none continuous, but only a sudden transition is.
Eine besonders vorteilhafte und zweckmäßige Ausführungsform einer Anordnung zur Durchführung des Verfahrens gemäß der Erfindung ist dadurch gekennzeichnet, daß in der Steuerschaltung ein Mikrokontroller vorgesehen ist und daß das Verschieben der Kennlinie softwaremäßig erfolgt, insbesondere durch Addition oder Subtraktion von entsprechenden Schrittwerten oder von kontinuierlich veränderbaren Größen zu den Steuerwerten, welche einem vorgesehenen Stellglied zugeführt werden.A particularly advantageous and expedient embodiment of a Arrangement for performing the method according to the invention is characterized in that in the control circuit Microcontroller is provided and that moving the Characteristic curve takes place in software, in particular by addition or Subtraction from corresponding step values or from continuously variable quantities to the tax values which be supplied to an intended actuator.
Ein alternative vorteilhafte Ausführungsform einer Anordnung zur Durchführung des erfindungsgemäßen Verfahrens beinhaltet, daß in der Steuerschaltung ein ASIC (anwendungsgemäß spezifizierte integrierte Schaltung) vorgesehen ist, und daß durch sie das Verschieben der Kennlinie hardwaremäßig erfolgt, insbesondere durch Addition oder Subtraktion von entsprechenden Schrittwerten oder von kontinuierlich veränderbaren Größen zu den Steuerwerten, welche einem vorgesehenen Stellglied zugeführt werden.An alternative advantageous embodiment of an arrangement for Carrying out the method according to the invention includes that in the control circuit an ASIC (specified by application integrated circuit) is provided, and that through them the Hardware shifting of the characteristic takes place, in particular by adding or subtracting corresponding step values or from continuously variable values to the control values, which are fed to an intended actuator.
Die Erfindung ist anhand eines in der Zeichnung dargestellten Ausführungsbeispiels in der nachfolgenden Beschreibung näher erläutert. Es zeigt:
- Fig. 1
- schematisch den Ablauf des erfindungsgemäß gestalteten Verfahrens zur Leistungssteuerung einer Hochdruck-Gasentladungslampe.
- Fig. 1
- schematically the sequence of the method designed according to the invention for power control of a high-pressure gas discharge lamp.
In der Fig. 1 ist schematisch der Ablauf des erfindungsgemäß
gestalteten Verfahrens zur Leistungssteuerung einer Hochdruck-Gasentladungslampe
1 dargestellt. In einem nicht näher
dargestellten Steuergerät ist ein Mikrokontroller 2 enthalten.
Dieser gibt an ein Stellglied 3 einen Soll- bzw. Stellwert 4 ab,
welcher zur Steuerung der an die Hochdruck-Gasentladungslampe 1
abgegebenen Leistung dient. Dem Mikrokontroller 2 wird ein
Spannungswert 5 zugeführt, der dem an der Lampe 1 gemessenen
Spannung oder einer vergleichbaren Größe entspricht. Dem
Stellglied 3 kann ein Regelkreis, beispielsweise für den Strom,
unterlagert sein. Weiterhin wird dem Mikrokontroller 2 ein Wert 6
zugeführt, wie dargestellt, oder es wird ein entsprechender Wert
vom Mikrokontroller selbst erzeugt. Dieser Wert 6 bedeutet die
erfindungsgemäße Leistungsänderung durch eine gezielte
Verschiebung der Kennlinie. Dies erfolgt insbesondere durch die
Manipulation einer oder mehrerer Eingangsgrößen der Kennlinie.1 schematically shows the sequence of the invention
designed method for power control of a high pressure gas discharge lamp
1 shown. Not in one
shown control unit, a
Zum besseren Verständnis der Erfindung ist in den, den
Mikrokontroller 2 darstellenden Block der hyperbolische Teil des
Schaubilds einer sogenannten Vedilis-Kennlinie 21 schematisch
eingetragen. Dies ist eine Spannungs-/Strom-Kennlinie gemäß
welcher z.B. bei Vorgabe der Spannung U der Strom I als Soll-
bzw. Stellwert bestimmt wird. Es sei nun angenommen, daß die
Lampe 1 in einem Betriebspunkt 22 betrieben wird. Bei diesem
Betriebspunkt 22 entsteht bei einem eingeprägten Strom I1 eine
Spannung U1. Die Leistung soll nunmehr vermindert werden. Dazu
kommt die entsprechende Information als Wert 6 in den
Mikrokontroller 2, oder dieser erzeugt die entsprechende
Information selbst. Der Mikrokontroller 2 erhöht daraufhin den
der anliegenden Leistung entsprechenden Spannungswert U1 um den
Änderungsbetrag ΔU auf den Wert U2, entsprechend dem Punkt 27.
Daraufhin wird vom Mikrokontroller der diesem Spannungswert U2
entsprechende Stromwert I2 aus der Kennlinie 21 ermittelt und als
neuer Soll- bzw. Stellwert 4 dem Stellglied 3 zugeführt. Die
Lampe 1 erhält demgemäß eine diesem Strom I2 und der Spannung U1,
die ja tatsächlich annäherungsweise noch anliegt, entsprechende
niedrigere Leistung. Je nach Lampe verändert sich dadurch auch
etwas die Spannung. Dieser niedrigeren Leistung entspricht die
gestrichelt dargestellte Leistungshyperbel bzw. Kennlinie 23 mit
dem Betriebspunkt 24. Bei gewünschter Leistungserhöhung ist der
Vorgang umgekehrt und es gilt dann beispielsweise die gestrichelt
dargestellte Kennlinie 25 mit einem Betriebspunkt 26.For a better understanding of the invention, the hyperbolic part of the diagram of a so-called Vedilis
Die vorstehend anhand der Verschiebung der Kennlinie 21 entlang
der Spannungsachse U beschriebene erfindungsgemäße Veränderung
der Leistung kann in analoger Weise auch entlang der Stromachse I
erfolgen. Je nach Art der Kennlinie und der Art und Größe der
angestrebten Veränderung der Leistung kann die am besten
geeignete Richtung oder eine Kombination beider Verfahren der
Verschiebung gewählt werden.The above based on the displacement of the
Gemäß dem dargestellten Ausführungsbeispiel ist die Verschiebung dann besonders flexibel und zweckmäßig zu realisieren, wenn ein Mikrokontroller im Steuergerät vorgesehen ist. Dann erfolgt die Verschiebung softwaremäßig. Wie bereits erwähnt, wird bei der Verschiebung ein bestimmter, der gewünschten Leitungsänderung entsprechender Schrittwert zu oder von dem tatsächlich Vorliegenden Spannungs- oder Stromwert addiert oder subtrahiert. Eine Addition oder Subtraktion von Schritten ist softwaremäßig in einem Mikrokontroller besonders einfach zu realisieren. Diese Art der Verschiebung ermöglicht es auch, daß im Speicher des Mikrokontrollers nur eine einzige Kennlinie abgespeichert ist. Dies erspart Speicherplatz. Je nach Konfiguration kann es auch erhebliche Rechenzeit einsparen, dies insbesondere dann, wenn bei jedem an der Lampe festgestellten Eingangswert für die Kennlinie durch Berechnung der zugehörige andere Wert für die Lampe ermittelt werden muß.According to the illustrated embodiment, the shift is to be implemented particularly flexibly and expediently if a Microcontroller is provided in the control unit. Then the Software shift. As already mentioned, the Shift a certain, the desired line change corresponding step value to or from which actually Existing voltage or current value added or subtracted. An addition or subtraction of steps is software in a microcontroller is particularly easy to implement. This kind the shift also allows the memory of the Microcontroller only a single characteristic is stored. This saves space. Depending on the configuration, it can also save considerable computing time, especially if at each input value for the characteristic curve found on the lamp by calculating the associated other value for the lamp must be determined.
Das vorliegende erfindungsgemäße Verfahren ist eine ausgezeichnete Grundlage für eine ASIC-Realisierung der Funktionen des Mikrokontrollers und ggf. für eine hardwaremäßige Realisierung der Vedilis-Kennlinie. The present method is one excellent basis for an ASIC implementation of the Functions of the microcontroller and possibly for a hardware Realization of the Vedilis characteristic.
Dazu beinhaltet eine alternative vorteilhafte Ausführungsform einer Anordnung zur Durchführung des erfindungsgemäßen Verfahrens, daß in der Steuerschaltung ein ASIC, eine anwendungsgemäß spezifizierte integrierte Schaltung, vorgesehen ist, und daß durch sie das Verschieben der Kennlinie hardwaremäßig erfolgt, insbesondere durch Addition oder Subtraktion von entsprechenden Schrittwerten oder von kontinuierlich veränderbaren Größen zu den Steuerwerten, welche einem vorgesehenen Stellglied zugeführt werden.For this purpose, an alternative advantageous embodiment includes an arrangement for performing the invention Process that an ASIC, a integrated circuit specified according to the application and that by moving the characteristic hardware, in particular by addition or Subtraction from corresponding step values or from continuously variable quantities to the tax values which be supplied to an intended actuator.
Es kann somit die Leistung, die der Hochdruck-Gasentladungslampe zugeführt wird, mit geringem Aufwand verändert werden. Die Leistung muß während der Laufzeit nicht berechnet werden, es ist weder eine analoge noch eine digitale Rechenschaltung erforderlich.It can therefore be the power of the high pressure gas discharge lamp is fed, can be changed with little effort. The Power doesn't have to be calculated during runtime, it is neither an analog nor a digital arithmetic circuit required.
Claims (8)
- Method for controlling the power of a high-pressure gas discharge lamp (1), a control unit being provided which controls a provided power supply circuit essentially at constant power in accordance with a characteristic (21), characterized in that in order to change the power the voltage/current characteristic (21) is displaced specifically, in particular by manipulation of one or more input variables of the characteristic (21).
- Method according to Claim 1, characterized in that the displacement of the characteristic (21) is performed along the voltage axis (U) or along the current axis (I) or simultaneously along both axes.
- Method according to Claim 1 or 2, characterized in that the displacement is performed in the hyperbolic region of the characteristic (21), the characteristic being a so-called Vedilis characteristic, in particular.
- Method according to Claim 1, 2 or 3, characterized in that the displacement of the characteristic (21) is performed by software with the aid of a provided microcontroller (2).
- Method according to one of the preceding claims, characterized in that the displacement of the characteristic (21) is performed by the addition or subtraction of step values (ΔU) or of continuously variable quantities, the step values or the continuously variable quantities being a function of the magnitude of the desired change in power.
- Method according to one of the preceding claims, characterized in that the change in power is performed by displacing a characteristic in conjunction with only a single available, in particular stored, characteristic (21).
- Arrangement for carrying out the method according to one of Claims 1 to 3 or 4 to 6 for controlling the power of a high-pressure gas discharge lamp (1), a control unit being provided which controls a provided power supply circuit essentially at constant power in accordance with a characteristic (21), characterized in that a microcontroller (2) is provided in the control circuit for the purpose of changing the power by specifically displacing the voltage/current characteristic (21), the displacement of the characteristic (21) being performed by software, in particular by the addition or subtraction of corresponding step values (ΔU) or of continuously variable quantities to form the control values (U1, U2), which are fed to a provided actuator (3).
- Arrangement for carrying out the method according to one of Claims 1 to 3 and 5 or 6 for controlling the power of a high-pressure gas discharge lamp (1), a control unit being provided which controls a provided power supply circuit essentially at constant power in accordance with a characteristic (21), characterized in that an ASIC (Application-Specific Integrated Circuit) is provided in the control circuit for the purpose of changing the power by specifically displacing the voltage/current characteristic (21), the displacement of the characteristic (21) being performed by hardware, in particular by the addition or subtraction of corresponding step values (ΔU) or of continuously variable quantities to form the control values (U1, U2), which are fed to a provided actuator (3).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19535663A DE19535663A1 (en) | 1995-09-26 | 1995-09-26 | Method and arrangement for controlling the power of a high-pressure gas discharge lamp |
| DE19535663 | 1995-09-26 | ||
| PCT/DE1996/001000 WO1997012498A1 (en) | 1995-09-26 | 1996-06-07 | Method and device for controlling the power of a high-pressure gas-discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0852892A1 EP0852892A1 (en) | 1998-07-15 |
| EP0852892B1 true EP0852892B1 (en) | 2000-03-22 |
Family
ID=7773149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96919634A Expired - Lifetime EP0852892B1 (en) | 1995-09-26 | 1996-06-07 | Method and device for controlling the power of a high-pressure gas-discharge lamp |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6051939A (en) |
| EP (1) | EP0852892B1 (en) |
| JP (1) | JP3949168B2 (en) |
| KR (1) | KR19990064044A (en) |
| DE (2) | DE19535663A1 (en) |
| WO (1) | WO1997012498A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29616655U1 (en) * | 1996-09-26 | 1998-02-05 | Robert Bosch Gmbh, 70469 Stuttgart | Arrangement for recognizing the state of a high-pressure gas discharge lamp when switched on |
| DE19702687C1 (en) * | 1997-01-25 | 1998-08-06 | Bosch Gmbh Robert | Arrangement for protection against excess temperature of a control device for gas discharge lamps |
| DE19734359A1 (en) * | 1997-08-08 | 1999-02-18 | Bosch Gmbh Robert | Method for generating the current setpoint for a control device for the rapid start-up of a high-pressure gas discharge lamp |
| JP2000180732A (en) * | 1998-12-11 | 2000-06-30 | Asahi Optical Co Ltd | Electronic endoscope |
| WO2002035894A1 (en) * | 2000-10-27 | 2002-05-02 | Koninklijke Philips Electronics N.V. | Circuit arrangement |
| KR20010016537A (en) * | 2000-12-19 | 2001-03-05 | 오흥국 | Method and apparatus for measuring power consumption for electro-chemical equipment, and electro-chemical energy consumption power meter using the same |
| KR100434950B1 (en) * | 2001-03-16 | 2004-06-09 | 이상춘 | Electronic Ballast for HID Lamp |
| US6388398B1 (en) * | 2001-03-20 | 2002-05-14 | Koninklijke Philips Electronics N.V. | Mixed mode control for ballast circuit |
| JP4123819B2 (en) * | 2002-05-15 | 2008-07-23 | ウシオ電機株式会社 | Light source device |
| DE10319950A1 (en) * | 2003-05-02 | 2004-11-18 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Operating device and method for operating gas discharge lamps |
| FR2887394B1 (en) * | 2005-06-17 | 2015-04-17 | Valeo Vision | METHOD AND DEVICE FOR BALLAST MANAGEMENT, IN PARTICULAR FOR A MOTOR VEHICLE PROJECTOR |
| JP2009004332A (en) * | 2007-06-25 | 2009-01-08 | Sansha Electric Mfg Co Ltd | Discharge lamp lighting control device, and power supply circuit |
| US8076866B2 (en) * | 2009-01-06 | 2011-12-13 | Osram Sylania Inc. | Electronic ballast having current waveform control within the half wave |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1277677A (en) * | 1918-04-18 | 1918-09-03 | Peter Zumberg | Oil-press. |
| US4240009A (en) * | 1978-02-27 | 1980-12-16 | Paul Jon D | Electronic ballast |
| US4373146A (en) * | 1980-10-20 | 1983-02-08 | Gte Products Corporation | Method and circuit for operating discharge lamp |
| US4414493A (en) * | 1981-10-06 | 1983-11-08 | Thomas Industries Inc. | Light dimmer for solid state ballast |
| WO1988001468A1 (en) * | 1986-08-11 | 1988-02-25 | Innovative Controls, Inc. | Solid state ballast for high intensity discharge lamps having constant line and lamp wattage |
| DE3715162A1 (en) * | 1987-05-07 | 1988-11-17 | Bosch Gmbh Robert | CIRCUIT ARRANGEMENT FOR OPERATING A GAS DISCHARGE LAMP ON A DC POWER SOURCE |
| DE4015398A1 (en) * | 1990-05-14 | 1991-11-21 | Hella Kg Hueck & Co | Starter control circuit for HV gas discharge lamp in road vehicle |
| JP3196206B2 (en) * | 1990-09-25 | 2001-08-06 | 東芝ライテック株式会社 | Discharge lamp lighting device |
| JP3280475B2 (en) * | 1993-08-03 | 2002-05-13 | 池田デンソー株式会社 | Discharge lamp lighting device |
| BE1007458A3 (en) * | 1993-08-23 | 1995-07-04 | Philips Electronics Nv | Shifting. |
| US5569984A (en) * | 1994-12-28 | 1996-10-29 | Philips Electronics North America Corporation | Method and controller for detecting arc instabilities in gas discharge lamps |
| KR100435231B1 (en) * | 2002-03-19 | 2004-06-09 | 바이오세인트(주) | A novel hydrocarbon-degrading psychrotrophic bacterium Rodococcus sp. KCTC 10203BP strain and method for bioremediation of oil contamination using thereof |
-
1995
- 1995-09-26 DE DE19535663A patent/DE19535663A1/en not_active Withdrawn
-
1996
- 1996-06-07 EP EP96919634A patent/EP0852892B1/en not_active Expired - Lifetime
- 1996-06-07 JP JP51304797A patent/JP3949168B2/en not_active Expired - Fee Related
- 1996-06-07 DE DE59604796T patent/DE59604796D1/en not_active Expired - Lifetime
- 1996-06-07 KR KR1019980702522A patent/KR19990064044A/en not_active Application Discontinuation
- 1996-06-07 WO PCT/DE1996/001000 patent/WO1997012498A1/en not_active Application Discontinuation
- 1996-06-07 US US08/983,048 patent/US6051939A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE59604796D1 (en) | 2000-04-27 |
| JPH11514486A (en) | 1999-12-07 |
| WO1997012498A1 (en) | 1997-04-03 |
| KR19990064044A (en) | 1999-07-26 |
| DE19535663A1 (en) | 1997-03-27 |
| US6051939A (en) | 2000-04-18 |
| EP0852892A1 (en) | 1998-07-15 |
| JP3949168B2 (en) | 2007-07-25 |
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