EP1555859B1 - Control of lighting devices over a modulated DC bus - Google Patents

Control of lighting devices over a modulated DC bus Download PDF

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Publication number
EP1555859B1
EP1555859B1 EP04027898.8A EP04027898A EP1555859B1 EP 1555859 B1 EP1555859 B1 EP 1555859B1 EP 04027898 A EP04027898 A EP 04027898A EP 1555859 B1 EP1555859 B1 EP 1555859B1
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EP
European Patent Office
Prior art keywords
power line
output circuit
lamp
rectifier
operating
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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.)
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EP04027898.8A
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German (de)
French (fr)
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EP1555859A1 (en
Inventor
Dietmar Klien
Siegfried Luger
Falk Richter
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Tridonic GmbH and Co KG
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Tridonic GmbH and Co KG
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Priority to EP10182692.3A priority Critical patent/EP2288238B1/en
Publication of EP1555859A1 publication Critical patent/EP1555859A1/en
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Publication of EP1555859B1 publication Critical patent/EP1555859B1/en
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    • 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
    • H05B41/24—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency
    • H05B41/245—Circuit arrangements in which the lamp is fed by high frequency ac, or with separate oscillator frequency for a plurality of lamps
    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/185—Controlling the light source by remote control via power line carrier transmission

Definitions

  • the present invention relates to the control of a plurality of illuminant operating devices from a central unit.
  • the light source is a gas discharge lamp 5, which is controlled by an electric ballast (ECG) 1 as a control gear.
  • ECG electric ballast
  • this electronic ballast 1 has a rectifier with power factor correction circuit (PFC, Power Factor Correction) 2, an electrolyte storage capacitor 4 and an RF inverter 3, which in turn via its output circuit 6, the gas discharge lamp 5 drives.
  • the DC voltage (bus voltage) is therefore only present within the ECG.
  • an emergency lighting control 7 may be provided.
  • the rectifier 2 in the electronic ballast 1 is usually supplied with alternating voltage 9, for example mains voltage.
  • WO 94/27419 and US 5,245,253 disclose a system and method for power distribution on gas discharge lamps.
  • a DC voltage network is described, which is fed by a central rectifier.
  • Several light source control gear are connected to the DC power supply.
  • a dimming circuit is disclosed which may be connected to the plurality of lighting devices.
  • US 2003/222603 A1 describes a control system and method for independently controlling branches of a lighting system. In particular, it is proposed to use a power line communication.
  • US 5,539,388 discloses to transmit high-frequency digital control signals by means of power line communication.
  • the starting point for the present invention is to propose control for illuminant operating devices, which enables more cost-effective production of operating devices.
  • the central point of the invention is that the unit rectifier / PFC is no longer provided locally in each operating device, but centrally for several operating devices.
  • the connection between this center and the individual operating devices is carried out according to the invention via a DC output circuit.
  • the present invention deals with the aspect of how operating devices can be supplied in a simple manner via the DC output circuit not only with the required operating power, but also with control signals.
  • a method for controlling lighting device operating devices by means of a central rectifier / PFC unit, which supplies a plurality of light source operating devices by means of at least one DC output circuit.
  • the DC supply voltage is modulated in a powerline technology high-frequency digital control signals, which are read by powerline demodulators in the operating devices and evaluated to control the associated light source, wherein in the DC output circuit or in the rectifier / PFC unit a powerline Modulator modulated on the DC output circuit modulated control signals.
  • powerline is to be understood in the broadest sense as a signal transmission via a power supply. Fundamentals of powerline technology can be found, for example, in the book “Powerline Communications” by Klaus Dorstedt, Verlag Prentice Hall, June 2001.
  • a power-line modulator for modulating supplied control signals to the DC output circuit can in the DC output circuit or be provided in the central rectifier / PFC unit.
  • a switch-off command are transmitted, whereupon this switches off the associated lamp via a powerline control command.
  • the gas discharge lamp can be switched off by switching off the inverter in the electronic ballast.
  • the powerline modulator may be preceded by a switch, wherein the powerline modulator issues a turn-off command to the DC output circuit in the form of a powerline command when the upstream switch is moved to its off position.
  • This conversion of the switch position into a digital control command has the advantage that it avoids the problems of the formation of a spark gap when opening the switch, which are common in high-voltage DC switches.
  • signals can also be transmitted bidirectionally in accordance with the powerline technology, so that signals can also be transmitted from one operating device to the central rectifier / PFC unit.
  • the corresponding operating device has a powerline modulator.
  • the powerline modulator can be provided separately (external) to the central rectifier / PFC unit and transmit signals regarding the operating state of a luminous means or the associated equipment to the rectifier / PFC unit.
  • the control commands may be individually addressable to operating devices and / or groups of operating devices in that the commands have an address header or an individual output circuit is assigned to the operating device (s) to be addressed. In the latter case, the addressing thus takes place by responding to that output circuit to which the device to be addressed is assigned.
  • Individual light sources and / or groups of light sources can thus be individually started and / or dimmed by means of the powerline control commands.
  • the powerline control commands can be modulated with an amplitude of less than 10%, in particular less than 5% of the DC voltage.
  • the requirements in the Powerline DC bus can be defined without regard to the requirements of network operators, so that the strict Restrictions on the powerline technology, as they prevail in public networks, must not be met. Namely, any high, high-frequency signal levels (modulation levels) in the DC bus cause no harm to the AC power supply.
  • an illumination system including a control system and light emitting devices.
  • This control system comprises a central rectifier / PFC unit, hereinafter referred to as "central unit”.
  • This central unit supplies by means of at least one DC output circuit several light source control gear.
  • the control system is adapted to choirmodulieren the DC supply voltage in a powerline high-frequency digital control signals, the operating devices each having a powerline demodulator, which reads the high-frequency digital control signals and evaluates the control of the operating devices associated bulbs, wherein in the DC Output circuit or in the rectifier / PFC unit, a powerline modulator is provided which modulates the supplied control signals.
  • a powerline modulator may be provided in the DC output circuit itself or in the central unit.
  • the powerline demodulator in an operating device can be designed to initiate a switch-off command, which it receives via the DC output circuit, the switching off of the respective associated light source.
  • a central processing unit comprising, for example, a rectifier 2 and a power factor correction circuit (PFC) 10 is provided for a plurality of illuminant operating devices 1, 1 ', 1 " also spatially separated from the control gear and can, for example, be centrally located for a room, a floor or even a building in a cabinet, etc.
  • PFC power factor correction circuit
  • the various light-emitting devices operating devices 1, 1 ', 1 a variety of light sources, such as a gas discharge lamp 5, LEDs 5', etc. control ..
  • the bulbs can therefore be operated with DC or AC voltage, in Last case in the zugehärigen operating device, an inverter is provided.
  • the operating devices 1, 1', 1" are designed differently.
  • the corresponding operating device 3 is, for example, designed as a ballast with an inverter.
  • the operating devices can also be referred to as "output converters".
  • an output circuit 11 can be bus-shaped, so that the various operating devices 1, 1 ', 1 "are supplied via stubs 13, 13', 13 '' starting from this central common bus 11.
  • individual ones can be supplied Operating devices or jointly supplied groups of operating devices individual output circuits 12 may be provided.
  • This DC output circuit has the advantage that it is less susceptible to parasitic effects than corresponding AC circuits.
  • Emergency lighting control units 7 or further control units 8 can be connected to the DC output circuit 11 or 12, and these devices can also read signals from the connected operating devices from the DC bus if they have a powerline demodulator.
  • the central unit is provided jointly for a plurality of operating devices, wherein the central unit with the Operating equipment is connected by means of at least one DC output circuit.
  • the voltage on the output circuit 11 may be for example 400 volts.
  • Fig. 1 For example, as can be seen, the DC output circuit 11 is strictly disconnected from the power supply voltage 9, as explained in detail below, a powerline modulation may be provided for the DC output circuit 11 that does not suffer from those restrictions normally prevailing in mains power supplies.
  • Fig. 3 a technique is shown, as by means of the DC bus in a simple manner, the operating devices 1 not only supplied with voltage, but also can be controlled.
  • powerline control signals are high-frequency modulated onto the DC bus 11.
  • the stroke of the modulation can be, for example, 10 volts at 400 volts DC voltage.
  • the modulation swing is small compared to the level of the DC voltage and bpsw. is less than 10% and preferably less than 5% of the DC voltage level.
  • Doe modulation frequency may be, for example, in the MHz range.
  • a power-line (PLC) modulator 17 is provided which modulates the control signals 23 supplied from a higher-level controller onto the DC bus 11.
  • the higher-level control can, for example, be a DALI (Digital Addressable Light Interface) controller.
  • DALI Digital Addressable Light Interface
  • control signals 23 may be complex control signals for starting, switching on and / or dimming, etc. of the lamps 14 connected to the corresponding operating device 1.
  • the PLC modulator 17 but also a simple, manually operable button or switch 18th so that the transfer of this switch 18 to the off position is implemented by the PLC modulator 17 into a powerline drive signal for the DC bus 11.
  • This powerline control signal is then read out by a PLC modulator 15, evaluated and transferred to a local control unit 16 in the operating device 1.
  • the local control unit 16 ensures that the read-out powerline control signals are converted into a corresponding operating state control signal for the connected lighting means 14.
  • a light source can be switched on, switched off and / or dimmed or queried states of a control gear from the central unit (master / slave principle).
  • the brightness control may be in a gas discharge lamp, for example by adjusting the frequency of the inverter in an electronic ballast (ECG).
  • a powerline control command with an address header may be provided so that the PLC demodulator 15 and the connected local control unit 16 detect can, whether the respective powerline control command for the associated control gear 1 is determined.
  • the operating device is assigned in advance an address which is stored in the operating device and which is known to the unit sending the control command.
  • the central unit 20 or the associated PLC modulator 17 can thereby address an operating device 1 with a powerline control command that a DC bus line 11 assigned to this operating device 1 is used for the transmission of the corresponding powerline control command.
  • the central processing unit 20 may have a plurality of output circuits 11, 12 (see Fig. 1 ), so as to different operating devices or groups to control differently on operating devices (for example, start, switch off, dimming the associated bulbs).
  • a sub-unit 20 may be provided, which may include the PLC modulator 17.
  • an AC voltage (AC intermediate voltage) rectified by the central unit can be present between the subunit 20 and the central unit.
  • the communication on the DC bus 11 is bidirectional. This means that not only can powerline control commands be transmitted from a control center 19 to local operating devices 1, but, for example, error messages and / or status signals from local operating devices can also be reported back to the control center 19.
  • the corresponding operating device 1 of course not only a PLC demodulator 15, but also a PLC modulator (not shown in figures) for the modulation of the feedback signals on the DC bus 11.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Description

Die vorliegende Erfindung bezieht sich auf die Steuerung von mehreren Leuchtmittel-Betriebsgeräten ausgehend von einer zentralen Einheit.The present invention relates to the control of a plurality of illuminant operating devices from a central unit.

Dabei geht die Erfindung von einem in Fig. 2 schematisch dargestellten System aus. In diesem Beispiel ist das Leuchtmittel eine Gasentladungslampe 5, die von einem elektrischen Vorschaltgerät (EVG) 1 als Betriebsgerät angesteuert wird. In üblicher Weise weist dieses EVG 1 einen Gleichrichter mit Leistungsfaktor-Korrekturschaltung (PFC, Power Factor Correction) 2, einen Elektrolyt-Speicherkondensator 4 sowie einen HF-Wechselrichter 3 auf, der wiederum mittels über seinen Ausgangskreis 6 die Gasentladungslampe 5 ansteuert. Die Gleichspannung (Busspannung) liegt somit nur innerhalb des EVGs vor.The invention of a in Fig. 2 schematically illustrated system. In this example, the light source is a gas discharge lamp 5, which is controlled by an electric ballast (ECG) 1 as a control gear. In the usual way, this electronic ballast 1 has a rectifier with power factor correction circuit (PFC, Power Factor Correction) 2, an electrolyte storage capacitor 4 and an RF inverter 3, which in turn via its output circuit 6, the gas discharge lamp 5 drives. The DC voltage (bus voltage) is therefore only present within the ECG.

Zusätzlich kann eine Notbeleuchtungssteuerung 7 vorgesehen sein.In addition, an emergency lighting control 7 may be provided.

Der Gleichrichter 2 in dem EVG 1 wird üblicherweise mit Wechselspannung 9, beispielsweise Netzspannung, versorgt.The rectifier 2 in the electronic ballast 1 is usually supplied with alternating voltage 9, for example mains voltage.

Gleichzeitig ist es bekannt, das EVG 1 über eine Digital- oder Analogbussteuerung 8 anzusteuern, um somit die Lampe 5 zu starten, zu dimmen oder auszuschalten. Festzuhalten ist, dass bei diesem Stand der Technik in jedem Lampenbetriebsgerät (EVG 1) ein eigener Gleichrichter 2 mit PFC-Schaltung vorgesehen ist. Eine derartige PFC-Schaltung verringert bekanntlich störende Oberwellen im Eingangsstrom. Andererseits stellen diese lokal in jedem EVG 1 vorgesehenen Wechselrichter mit PFC 2 einen beträchtlichen Kostenfaktor dar, der den Trend zu äußerst kostengünstig gefertigten EVG's stark eingrenzt.At the same time, it is known to control the electronic ballast 1 via a digital or analog bus control 8, in order thus to start, dim or switch off the lamp 5. It should be noted that in this prior art in each lamp operating device (ECG 1) a separate rectifier 2 is provided with PFC circuit. Such a PFC circuit is known to reduce disturbing harmonics in the input current. On the other hand, these inverters with PFC 2 provided locally in each ECG 1 represent a considerable cost factor, which severely restricts the trend towards extremely cost-effectively manufactured electronic ballasts.

WO 94/27419 und US 5,245,253 offenbaren ein System und ein Verfahren zur Stromverteilung an Gasentladungslampen. Insbesondere ist ein Gleichspannungsnetz beschrieben, das von einem zentralen Gleichrichter gespeist wird. Mehrere Leuchtmittel-Betriebsgeräte sind an das Gleichspannungsnetz angeschlossen. Ferner wird ein Dimmschaltkreis offenbart, der an die mehreren Leuchtmittel-Betriebsgeräte angeschlossen sein kann. WO 94/27419 and US 5,245,253 disclose a system and method for power distribution on gas discharge lamps. In particular, a DC voltage network is described, which is fed by a central rectifier. Several light source control gear are connected to the DC power supply. Furthermore, a dimming circuit is disclosed which may be connected to the plurality of lighting devices.

US 2003/222603 A1 beschreibt ein Steuersystem- und verfahren für die unabhängige Steuerung von Zweigen eines Beleuchtungssystems. Insbesondere wird dazu vorgeschlagen, eine Stromleitungskommunikation zu verwenden. US 2003/222603 A1 describes a control system and method for independently controlling branches of a lighting system. In particular, it is proposed to use a power line communication.

US 5,539,388 offenbart mittels Stromleitungskommunikation hochfrequente digitale Steuersignale zu übermitteln. US 5,539,388 discloses to transmit high-frequency digital control signals by means of power line communication.

Ausgangspunkt für die vorliegende Erfindung ist es dementsprechend, eine Ansteuerung für Leuchtmittel-Betriebsgeräte vorzuschlagen, die eine kostengünstigere Fertigung von Betriebsgeräten ermöglicht.Accordingly, the starting point for the present invention is to propose control for illuminant operating devices, which enables more cost-effective production of operating devices.

Zentraler Punkt der Erfindung ist es dabei, dass die Einheit Gleichrichter/PFC nicht mehr lokal in jedem Betriebsgerät, sondern zentral für mehrere Betriebsgeräte vorgesehen ist. Die Verbindung zwischen dieser Zentrale und den einzelnen Betriebsgeräten erfolgt erfindungsgemäß über einen DC-Ausgangskreis.The central point of the invention is that the unit rectifier / PFC is no longer provided locally in each operating device, but centrally for several operating devices. The connection between this center and the individual operating devices is carried out according to the invention via a DC output circuit.

Insbesondere beschäftigt sich die vorliegende Erfindung mit dem Aspekt, wie Betriebsgeräte in einfacher Weise über den DC-Ausgangskreis nicht nur mit der erforderlichen Betriebsleistung, sondern auch mit Steuersignalen versorgt werden können.In particular, the present invention deals with the aspect of how operating devices can be supplied in a simple manner via the DC output circuit not only with the required operating power, but also with control signals.

Genauer gesagt wird die oben angeführte Aufgabe durch die Merkmale der unabhängigen Ansprüche gelöst. Die abhängigen Ansprüche entwickeln den zentralen Gedanken der Erfindung in besonders vorteilhafter Weise weiter.More specifically, the above object is solved by the features of the independent claims. The dependent claims further develop the central idea of the invention in a particularly advantageous manner.

Erfindungsgemäß wird also ein Verfahren zur Steuerung von Leuchtmittel-Betriebsgeräten mittels einer zentralen Gleichrichter/PFC-Einheit vorgeschlagen, die mittels wenigstens eines DC-Ausgangskreises mehrere Leuchtmittelbetriebsgeräte versorgt. Dabei wird der DC-Versorgungsspannung in einer Powerline-Technik hochfrequente digitale Steuersignale aufmoduliert, die durch Powerline-Demodulatoren in den Betriebsgeräten ausgelesen und zur Ansteuerung des zugeordneten Leuchtmittels ausgewertet werden, wobei in dem DC-Ausgangskreis oder in der Gleichrichter/PFC-Einheit ein Powerline-Modulator zugeführte Steuersignale auf den DC-Ausgangskreis aufmoduliert.Thus, according to the invention, a method is proposed for controlling lighting device operating devices by means of a central rectifier / PFC unit, which supplies a plurality of light source operating devices by means of at least one DC output circuit. In this case, the DC supply voltage is modulated in a powerline technology high-frequency digital control signals, which are read by powerline demodulators in the operating devices and evaluated to control the associated light source, wherein in the DC output circuit or in the rectifier / PFC unit a powerline Modulator modulated on the DC output circuit modulated control signals.

Unter "Powerline" ist im weitesten Sine eine Signalübertragung über eine Spannungsversorgung zu verstehen. Grundlagen der Powerline-Technik können beispielsweise dem Buch "Powerline Communications" von Klaus Dorstedt, Verlag Prentice Hall, Juni 2001, entnommen werden.The term "powerline" is to be understood in the broadest sense as a signal transmission via a power supply. Fundamentals of powerline technology can be found, for example, in the book "Powerline Communications" by Klaus Dorstedt, Verlag Prentice Hall, June 2001.

Ein Powerline-Modulator zur Modulation zugeführter Steuersignale auf den DC-Ausgangskreis kann dabei in dem DC-Ausgangskreis oder aber in der zentralen Gleichrichter/PFC-Einheit vorgesehen sein.A power-line modulator for modulating supplied control signals to the DC output circuit can in the DC output circuit or be provided in the central rectifier / PFC unit.

Zum Ausschalten eines Leuchtmittels kann dem Powerline-Demodulator in einem Betriebsgerät ein Ausschaltbefehl übermittelt werden, woraufhin dieser das zugeordnete Leuchtmittel über einen Powerline-Steuerbefehl abschaltet.To turn off a lamp, the power line demodulator in an operating device, a switch-off command are transmitted, whereupon this switches off the associated lamp via a powerline control command.

Wenn beispielsweise das Leuchtmittel eine Gasentladungslampe und das Betriebsgerät dementsprechend ein elektronisches Vorschaltgerät ist, kann die Gasentladungslampe durch Abschalten des Wechselrichters in dem elektronischen Vorschaltgerät abgeschaltet werden.For example, if the light source is a gas discharge lamp and the operating device accordingly an electronic ballast, the gas discharge lamp can be switched off by switching off the inverter in the electronic ballast.

Dem Powerline-Modulator kann ein Schalter vorgeschaltet sein, wobei der Powerline-Modulator einen Ausschaltbefehl an den DC-Ausgangskreis in Form eines Powerline-Steuerbefehls abgibt, wenn der vorgeschaltete Schalter in seine Ausschalt-Position überführt wird. Dieses Umsetzen der Schalterstellung in einen digitalen Steuerbefehl hat den Vorteil, dass damit die bei Hochspannungs-DC-Schaltern üblichen Probleme der Bildung einer Funkenstrecke beim Öffnen des Schalters umgangen werden.The powerline modulator may be preceded by a switch, wherein the powerline modulator issues a turn-off command to the DC output circuit in the form of a powerline command when the upstream switch is moved to its off position. This conversion of the switch position into a digital control command has the advantage that it avoids the problems of the formation of a spark gap when opening the switch, which are common in high-voltage DC switches.

Auf dem DC-Ausgangskreis können Signale auch bidirektional gemäß der Powerline-Technik übertragen werden, so dass Signale auch von einem Betriebsgerät hin zu der zentralen Gleichrichter/PFC-Einheit übertragen werden können. In diesem Fall weist das entsprechende Betriebsgerät einen Powerline-Modulator auf.On the DC output circuit, signals can also be transmitted bidirectionally in accordance with the powerline technology, so that signals can also be transmitted from one operating device to the central rectifier / PFC unit. In this case, the corresponding operating device has a powerline modulator.

Somit können beispielsweise Fehler- und/oder Statusmeldungen von einem Betriebsgerät zu der zentralen Gleichrichter/PFC-Einheit oder zu einer anderen an den DC-Ausgangskreis angeschlossenen Stelle hin übertragen werden, die einen Powerline-Demodulator aufweist.Thus, for example, error and / or status messages from one operating device to the central rectifier / PFC unit or to another to the DC output circuit connected point to be transmitted, which has a powerline demodulator.

Der Powerline-Modulator kann separat (extern) zu der zentralen Gleichrichter/PFC-Einheit vorgesehen werden und Signale bzgl. des Betriebszustands eines Leuchtmittels bzw. des zugeordneten Betriebsmittels hin zu der Gleichrichter/PFC-Einheit übertragen.The powerline modulator can be provided separately (external) to the central rectifier / PFC unit and transmit signals regarding the operating state of a luminous means or the associated equipment to the rectifier / PFC unit.

Die Steuerbefehle können individuell an Betriebsgeräte und/oder Gruppen von Betriebsgeräten adressierbar sein, indem die Befehle einen Adress-Header aufweisen oder dem/den anzusprechenden Betriebsgerät/en ein individueller Ausgangskreis zugeordnet wird. In letzterem Fall erfolgt die Adressierung somit durch Ansprechen desjenigen Ausgangskreis, dem das zu adressierende Gerät zugeordnet ist.The control commands may be individually addressable to operating devices and / or groups of operating devices in that the commands have an address header or an individual output circuit is assigned to the operating device (s) to be addressed. In the latter case, the addressing thus takes place by responding to that output circuit to which the device to be addressed is assigned.

Einzelne Leuchtmittel und/oder Gruppen von Leuchtmitteln können somit mittels der Powerline-Steuerbefehle individuell gestartet und/oder gedimmt werden.Individual light sources and / or groups of light sources can thus be individually started and / or dimmed by means of the powerline control commands.

Die Powerline-Steuerbefehle können mit einer Amplitude von weniger als 10%, insbesondere weniger als 5% der DC-Spannung aufmoduliert werden. Diese verhältnismäßig geringen hochfrequenten Spannungsänderungen haben den Vorteil, dass für den Fall, dass sie einem Betriebsgerät keine Verwendung finden sollen, diese durch ein Tiefpassfilter leicht unterdrückt werden können.The powerline control commands can be modulated with an amplitude of less than 10%, in particular less than 5% of the DC voltage. These relatively low high-frequency voltage changes have the advantage that in the event that they should not be used by an operating device, they can be easily suppressed by a low-pass filter.

Im übrigen ist festzuhalten, dass die Anforderungen in dem Powerline-DC-Bus ohne Rücksichtnahme auf die Anforderungen von Netzbetreibern definiert werden können, so dass die strengen Beschränkungen der Powerline-Technik, wie sie in öffentlichen Netzen herrschen, nicht eingehalten werden müssen. Etwaige hohe, hochfrequente Signalpegel (Modulationspegel) in dem DC-Bus verursachen nämlich keine Beeinträchtigen der Wechselspannungsversorgung.It should also be noted that the requirements in the Powerline DC bus can be defined without regard to the requirements of network operators, so that the strict Restrictions on the powerline technology, as they prevail in public networks, must not be met. Namely, any high, high-frequency signal levels (modulation levels) in the DC bus cause no harm to the AC power supply.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung ist ein Beleuchtungssystem umfassend ein Steuersystem und Leuchtmittel-Betriebsgeräte vorgesehen. Dieses Steuersystem weist eine zentrale Gleichrichter/PFC-Einheit auf, im folgenden "Zentraleinheit" genannt. Diese Zentraleinheit versorgt mittels wenigstens eines DC-Ausgangskreises mehrere Leuchtmittel-Betriebsgeräte. Das Steuersystem ist dazu ausgelegt, der DC-Versorgungsspannung in einer Powerline-Technik hochfrequente digitale Steuersignale aufzumodulieren, wobei die Betriebsgeräte jeweils einen Powerline-Demodulator aufweisen, der die hochfrequenten digitalen Steuersignale ausliest und zur Ansteuerung des den Betriebsgeräten zugeordneten Leuchtmittel auswertet, wobei in dem DC-Ausgangskreis oder in der Gleichrichter/PFC-Einheit ein Powerline-Modulator vorgesehen ist, der die zugeführten Steuersignale aufmoduliert.In accordance with another aspect of the present invention, an illumination system including a control system and light emitting devices is provided. This control system comprises a central rectifier / PFC unit, hereinafter referred to as "central unit". This central unit supplies by means of at least one DC output circuit several light source control gear. The control system is adapted to aufzumodulieren the DC supply voltage in a powerline high-frequency digital control signals, the operating devices each having a powerline demodulator, which reads the high-frequency digital control signals and evaluates the control of the operating devices associated bulbs, wherein in the DC Output circuit or in the rectifier / PFC unit, a powerline modulator is provided which modulates the supplied control signals.

Ein Powerline Modulator kann in dem DC-Ausgangskreis selbst oder aber in der Zentraleinheit vorgesehen sein.A powerline modulator may be provided in the DC output circuit itself or in the central unit.

Der Powerline-Demodulator in einem Betriebsgerät kann dazu ausgelegt sein, auf einen Ausschaltbefehl, den er über den DC-Ausgangskreis erhält, das Ausschalten des jeweils zugeordneten Leuchtmittels zu veranlassen.The powerline demodulator in an operating device can be designed to initiate a switch-off command, which it receives via the DC output circuit, the switching off of the respective associated light source.

Weitere Merkmale, Vorteile und Eigenschaften der vorliegenden Erfindung sollen nunmehr unter Bezugnahme auf die Figuren der beigefügten Zeichnungen sowie die folgende detaillierte Beschreibung eines Ausführungsbeispiels näher erläutert werden.

Fig. 1
zeigt eine schematische Ansicht eines erfindungsgemäßen Steuersystems für Leuchtmittel-Betriebsgeräte mit zentraler Gleichrichter/PFC-Einheit und DC-Ausgangskreis,
Fig. 2
zeigt eine aus dem Stand der Technik bekannte Betriebsmittel-Ausgestaltung für Gasentladungslampen,
Fig. 3
zeigt ein erstes Ausführungsbeispiel der vorliegenden Erfindung, bei dem Powerline-Steuersignale auf einen DC-Ausgangskreis aufmoduliert werden, und
Fig. 4
zeigt ein weiteres Ausführungsbeispiel, das insbesondere für eine bidirektionale Kommunikation zwischen lokalen Betriebsgeräten und der Zentraleinheit ausgebildet ist.
Further features, advantages and features of the present invention will now be described with reference to the figures of the accompanying drawings and the following detailed Description of an embodiment will be explained in more detail.
Fig. 1
shows a schematic view of a control system according to the invention for light-emitting devices with central rectifier / PFC unit and DC output circuit,
Fig. 2
shows a known from the prior art equipment design for gas discharge lamps,
Fig. 3
shows a first embodiment of the present invention, in which powerline control signals are modulated onto a DC output circuit, and
Fig. 4
shows a further embodiment, which is designed in particular for a bidirectional communication between local operating devices and the central unit.

Wie in Fig. 1 gezeigt, ist eine Zentraleinheit, aufweisend beispielsweise einen Gleichrichter 2 sowie eine Leistungsfaktor-Korrekturschaltung (PFC) 10 für mehrere Leuchtmittel-Betriebsgeräte 1, 1', 1" vorgesehen. Die Zentraleinheit 2 wird mit Wechselspannung 9 versorgt. Die Zentraleinheit 2, 10 ist im übrigen auch räumlich von den Betriebsgeräten getrennt und kann bspw. zentral für einen Raum, eine Etage oder gar ein Gebäude in einem Schaltschrank etc. angeordnet sein.As in Fig. 1 1, a central processing unit comprising, for example, a rectifier 2 and a power factor correction circuit (PFC) 10 is provided for a plurality of illuminant operating devices 1, 1 ', 1 " also spatially separated from the control gear and can, for example, be centrally located for a room, a floor or even a building in a cabinet, etc.

Wie in Fig. 1 schematisch angedeutet, können die verschiedenen Leuchtmittel-Betriebsgeräte 1, 1', 1" verschiedenste Leuchtmittel, wie beispielsweise eine Gasentladungslampe 5, Leuchtdioden 5', etc. ansteuern. Die Leuchtmittel können also mit DC- oder mit AC-Spannung betrieben werden, wobei in letzerem Fall in dem zugehärigen Betriebsgerät ein Wechselrichter vorgesehen ist.As in Fig. 1 indicated schematically, the various light-emitting devices operating devices 1, 1 ', 1 "a variety of light sources, such as a gas discharge lamp 5, LEDs 5', etc. control .. The bulbs can therefore be operated with DC or AC voltage, in Last case in the zugehärigen operating device, an inverter is provided.

Weiterhin können an den Ausgangskreis 11 der Zentraleinheit auch andere (bspw. passive) lichttechnische oder Gebäudetechnische Einrichtungen, wie beispielsweise ein Lichtsensor 5" oder ein Bewegungsmelder (nicht dargestellt) angeschlossen sein.Furthermore, to the output circuit 11 of the central unit and other (eg passive) lighting or Building technical facilities, such as a light sensor 5 "or a motion detector (not shown) to be connected.

Je nach Natur der angeschlossenen Leuchtmittel 5, 5' bzw. Sensoren 5" sind die Betriebsgeräte 1, 1', 1" unterschiedlich ausgebildet. Für den Fall, dass die Gasentladungslampe 5 angesteuert werden soll, ist das entsprechende Betriebsgerät 3 bspw. als Vorschaltgerät mit einem Wechselrichter ausgebildet. Die Betriebsgeräte können in diesem Fall auch als "Ausgangs-Konverter" bezeichnet werden.Depending on the nature of the connected lamps 5, 5 'or sensors 5 ", the operating devices 1, 1', 1" are designed differently. In the event that the gas discharge lamp 5 is to be controlled, the corresponding operating device 3 is, for example, designed as a ballast with an inverter. In this case, the operating devices can also be referred to as "output converters".

Die Spannungsversorgung der Betriebsgeräte und Leuchtmittel wie auch die uni- oder bidirektionale Kommunikation zwischen der Zentraleinheit und den lokalen Betriebsgeräten 1, 1', 1" erfolgt über wenigstens einen DC-Ausgangskreis 11, 12. Wie in Fig. 1 schematisch dargestellt, kann dabei ein Ausgangskreis 11 busartig ausgestaltet sein, so dass ausgehend von diesem zentralen gemeinsamen Bus 11 die verschiedenen Betriebsgeräte 1, 1', 1" über Stichleitungen 13, 13', 13'' versorgt werden. Alternativ oder zusätzlich können für einzelne Betriebsgeräte bzw. gemeinsam versorgte Gruppen an Betriebsgeräten individuelle Ausgangskreise 12 vorgesehen sein.The power supply of the operating devices and lighting means as well as the unidirectional or bidirectional communication between the central unit and the local operating devices 1, 1 ', 1 "via at least one DC output circuit 11, 12. As in Fig. 1 schematically illustrated, an output circuit 11 can be bus-shaped, so that the various operating devices 1, 1 ', 1 "are supplied via stubs 13, 13', 13 '' starting from this central common bus 11. Alternatively or additionally, individual ones can be supplied Operating devices or jointly supplied groups of operating devices individual output circuits 12 may be provided.

Dieser DC-Ausgangskreis hat den Vorteil, dass er im Vergleich zu entsprechenden AC-Kreisen gegenüber parasitären Effekten weniger anfällig ist.This DC output circuit has the advantage that it is less susceptible to parasitic effects than corresponding AC circuits.

An den DC-Ausgangskreis 11 bzw. 12 können Notlicht-Steuereinheiten 7 bzw. weitere Steuereinheiten 8 angeschlossen sein, wobei diese Einrichtungen auch Signale von den angeschlossenen Betriebsgeräten aus dem DC-Bus auslesen könne, wenn sie einen Powerline-Demodulator aufweisen.Emergency lighting control units 7 or further control units 8 can be connected to the DC output circuit 11 or 12, and these devices can also read signals from the connected operating devices from the DC bus if they have a powerline demodulator.

Festzuhalten ist also, dass gemäß der vorliegenden Erfindung die Zentraleinheit für mehrere Betriebsgeräte gemeinsam vorgesehen ist, wobei die Zentraleinheit mit den Betriebsgeräten mittels wenigstens eines DC-Ausgangskreises verbunden ist. Die Spannung auf dem Ausgangskreis 11 kann beispielsweise 400 Volt betragen.It should therefore be noted that according to the present invention, the central unit is provided jointly for a plurality of operating devices, wherein the central unit with the Operating equipment is connected by means of at least one DC output circuit. The voltage on the output circuit 11 may be for example 400 volts.

Da wie aus Fig. 1 beispielsweise ersichtlich, der DC-Ausgangskreis 11 strikt von der Netzversorgungsspannung 9 getrennt ist, kann wie im folgenden im Detail erläutert eine Powerline-Modulation für den DC-Ausgangskreis 11 vorgesehen sein, die nicht denjenigen Restriktionen unterliegt, wie sie normalerweise in Netzspannungsversorgungen herrschen.There like out Fig. 1 For example, as can be seen, the DC output circuit 11 is strictly disconnected from the power supply voltage 9, as explained in detail below, a powerline modulation may be provided for the DC output circuit 11 that does not suffer from those restrictions normally prevailing in mains power supplies.

In Fig. 3 ist eine Technik dargestellt, wie mittels des DC-Bus in einfacher Weise die Betriebsgeräte 1 nicht nur mit Spannung versorgt, sondern auch angesteuert werden können. Gemäß diesem Aspekt werden Powerline-Steuersignale hochfrequent auf den DC-Bus 11 aufmoduliert. Der Hub der Modulation kann dabei beispielsweise 10 Volt bei 400 Volt DC-Spannung sein. Allgemein ist festzuhalten, dass der Modulationshub im Vergleich zu dem Pegel der DC-Spannung klein ist und bpsw. weniger als 10% und vorzugsweise weniger als 5% des DC-Spannungspegels beträgt.In Fig. 3 a technique is shown, as by means of the DC bus in a simple manner, the operating devices 1 not only supplied with voltage, but also can be controlled. According to this aspect, powerline control signals are high-frequency modulated onto the DC bus 11. The stroke of the modulation can be, for example, 10 volts at 400 volts DC voltage. Generally, it should be noted that the modulation swing is small compared to the level of the DC voltage and bpsw. is less than 10% and preferably less than 5% of the DC voltage level.

Doe Modulationsfrequenz kann bspw. im MHz-Bereich liegen.Doe modulation frequency may be, for example, in the MHz range.

Separat zu der Zentraleinheit 20 oder integral mit dieser (schematisch durch Bezugszeichen 19 dargestellt) ist ein Powerline(PLC)-Modulator 17 vorgesehen, der von einer übergeordneten Steuerung her zugeführte Steuersignale 23 auf den DC-Bus 11 aufmoduliert.Separate from or integral with the central unit 20 (shown schematically by reference numeral 19), a power-line (PLC) modulator 17 is provided which modulates the control signals 23 supplied from a higher-level controller onto the DC bus 11.

Die übergeordnete Steuerung kann bspw. ein DALI (Digital Addressable Light Interface)- Steuerung sein.The higher-level control can, for example, be a DALI (Digital Addressable Light Interface) controller.

Diese Steuersignale 23 können komplexe Steuersignale zum Starten, Einschalten und/oder Dimmen etc. der an das entsprechende Betriebsgerät 1 angeschlossenen Leuchtmittel 14 sein. Insbesondere kann dem PLC-Modulator 17 aber auch ein einfacher, manuell betätigbarer Taster oder Schalter 18 vorgeschaltet sein, so dass das Überführen dieses Schalters 18 in die Aus-Position von dem PLC-Modulator 17 in ein Powerline-Ansteuersignal für den DC-Bus 11 umgesetzt wird.These control signals 23 may be complex control signals for starting, switching on and / or dimming, etc. of the lamps 14 connected to the corresponding operating device 1. In particular, the PLC modulator 17 but also a simple, manually operable button or switch 18th so that the transfer of this switch 18 to the off position is implemented by the PLC modulator 17 into a powerline drive signal for the DC bus 11.

Dieses Powerline-Steuersignal wird dann von einem PLC-Modulator 15 ausgelesen, auswertet und einer lokalen Steuereinheit 16 in dem Betriebsgerät 1 überführt. Die lokale Steuereinheit 16 sorgt dafür, dass die ausgelesenen Powerline-Steuersignale in ein entsprechendes Betriebszustands-Stellsignal für die angeschlossenen Leuchtmittel 14 umgesetzt wird. Mittels der Stellsignale kann also ein Leuchtmittel eingeschaltet, ausgeschaltet und/oder gedimmt bzw. auch ausgehend von der Zentraleinheit Zustände von einem Betriebsgerät abgefragt werden (Master/Slave-Prinzip). Die Helligkeitssteuerung kann bei einer Gasentladungslampe beispielsweise durch Einstellen der Frequenz des Wechselrichters in einem elektronischen Vorschaltgerät (EVG) sein.This powerline control signal is then read out by a PLC modulator 15, evaluated and transferred to a local control unit 16 in the operating device 1. The local control unit 16 ensures that the read-out powerline control signals are converted into a corresponding operating state control signal for the connected lighting means 14. By means of the control signals, therefore, a light source can be switched on, switched off and / or dimmed or queried states of a control gear from the central unit (master / slave principle). The brightness control may be in a gas discharge lamp, for example by adjusting the frequency of the inverter in an electronic ballast (ECG).

Zur Adressierung eines derartigen über den Bus übermittelten PLC-Steuerbefehls an ein bzw. eine Gruppe an Betriebsgeräten kann ein Powerline-Steuerbefehl mit einem Adress-Vorspann (Header) versehen sein, so dass der PLC-Demodulator 15 bzw. die angeschlossene lokale Steuereinheit 16 erfassen kann, ob der jeweilige Powerline-Steuerbefehl für das zugehörige Betriebsgerät 1 bestimmt ist. Dem Betriebsgerät wird dazu natürlich vorab eine Adresse zugeteilt, die in dem Betriebsgerät abgelegt ist und die der den Steuerbefehl sendenden Einheit bekannt ist.For addressing such a transmitted over the bus PLC control command to one or a group of operating devices, a powerline control command with an address header (header) may be provided so that the PLC demodulator 15 and the connected local control unit 16 detect can, whether the respective powerline control command for the associated control gear 1 is determined. Of course, the operating device is assigned in advance an address which is stored in the operating device and which is known to the unit sending the control command.

Alternativ oder zusätzlich kann aber auch die Zentraleinheit 20 bzw. der zugeordnete PLC-Modulator 17 ein Betriebsgerät 1 dadurch mit einem Powerline-Steuerbefehl ansprechen, dass eine diesem Betriebsgerät 1 zugeordnete DC-Busleitung 11 für die Übertragung des entsprechenden Powerline-Ansteuerbefehls verwendet wird. Insbesondere in diesem Fall kann die Zentraleinheit 20 mehrere Ausgangskreise 11, 12 (siehe Fig. 1) ansprechen, um somit verschiedene Betriebsgeräte bzw. Gruppen an Betriebsgeräten unterschiedlich anzusteuern (beispielsweise Starten, Ausschalten, Dimmen der zugeordneten Leuchtmittel).Alternatively or additionally, however, the central unit 20 or the associated PLC modulator 17 can thereby address an operating device 1 with a powerline control command that a DC bus line 11 assigned to this operating device 1 is used for the transmission of the corresponding powerline control command. In particular, in this case, the central processing unit 20 may have a plurality of output circuits 11, 12 (see Fig. 1 ), so as to different operating devices or groups to control differently on operating devices (for example, start, switch off, dimming the associated bulbs).

In Fig. 4 ist dargestellt, dass zwischen der Zentraleinheit 20 und einem bzw. mehreren Betriebsgeräten 1 eine Untereinheit 20 vorgesehen sein kann, die den PLC-Modulator 17 enthalten kann.In Fig. 4 It is shown that between the central unit 20 and one or more operating devices 1, a sub-unit 20 may be provided, which may include the PLC modulator 17.

Während für die Strecke zwischen der Untereinheit 20 und einem Betriebsgerät wiederum ein DC-Bus vorgesehen ist, kann zwischen der Untereinheit 20 und der Zentraleinheit eine von der Zentraleinheit gleichgerichtete Wechselspannung (AC-Zwischenspannung) vorliegen.While a DC bus is again provided for the distance between the subunit 20 and an operating device, an AC voltage (AC intermediate voltage) rectified by the central unit can be present between the subunit 20 and the central unit.

Bei dieser Ausgestaltung gemäß Fig. 4 wie auch bei den Ausgestaltungen gemäß Fig. 1 und Fig. 3 kann es im übrigen vorgesehen sein, dass die Kommunikation auf den DC-Bus 11 bidirektional erfolgt. Das heisst, es können nicht nur Powerline-Steuerbefehle von einer Zentrale 19 hin zu lokalen Betriebsgeräten 1 übertragen werden, sondern beispielsweise auch Fehlermeldungen und/oder Statussignale von lokalen Betriebsgeräten an die Zentrale 19 zurückgemeldet werden. In diesem Fall weist das entsprechende Betriebsgerät 1 natürlich nicht nur einen PLC-Demodulator 15, sondern auch einen PLC-Modulator (in Figuren nicht dargestellt) für die Modulation der Rückmeldungssignale auf den DC-Bus 11 auf.In this embodiment according to Fig. 4 as well as in the embodiments according to Fig. 1 and Fig. 3 It may be otherwise provided that the communication on the DC bus 11 is bidirectional. This means that not only can powerline control commands be transmitted from a control center 19 to local operating devices 1, but, for example, error messages and / or status signals from local operating devices can also be reported back to the control center 19. In this case, the corresponding operating device 1 of course not only a PLC demodulator 15, but also a PLC modulator (not shown in figures) for the modulation of the feedback signals on the DC bus 11.

Claims (20)

  1. Method for controlling lamp operating devices by means of a central rectifier/PFC unit (2, 10) which supplies a number of lamp operating devices (1) by means of at least one DC output circuit (11), characterized in that digital radio-frequency control signals are modulated onto the DC supply voltage in a power line technique (17), which signals are read out by power line demodulators (15) in the operating devices (1) and evaluated for controlling the associated lamps (5), wherein, in the DC output circuit or in the rectifier/PFC unit (2, 10), a power line modulator modulates supplied control signals onto the DC output circuit.
  2. Method according to Claim 1, characterized in that, for switching off a lamp (5), a switch-off command is conveyed to the power line demodulator whereupon the latter switches the associated lamp off via a corresponding power line control command.
  3. Method according to Claim 2, characterized in that the lamp is a gas discharge lamp and the operating device is an electronic ballast, the gas discharge lamp being switched off by switching off an inverter in the ballast.
  4. Method according to Claim 2 or 3, characterized in that the power line modulator is preceded by a switch, the power line modulator delivering a switch-off command to the DC output circuit when the switch is brought into a switch-off position.
  5. Method according to one of the preceding claims, characterized in that in the DC output circuit, signals are transmitted bidirectionally in power line technique in order to transmit signals from an operating device to the central rectifier/PFC unit.
  6. Method according to Claim 5, characterized in that error and/or status messages are transmitted from an operating device to the rectifier/PFC unit.
  7. Method according to one of the preceding claims, wherein the power line modulator is provided separately from the central rectifier/PFC unit and conveys signals with respect to the operating state of a lamp or of the associated operating means to the rectifier/PFC unit.
  8. Method according to one of the preceding claims, characterized in that the control commands can be addressed individually to operating devices and/or groups of operating devices in that the commands have an address header or an individual output circuit is in each case allocated to the operating device/devices to be addressed.
  9. Method according to Claim 8, characterized in that individual lamps and/or groups of lamps are started and/or dimmed individually by means of the power line control commands.
  10. Method according to one of the preceding claims, characterized in that the power line control signals are modulated with an amplitude of less than 10%, especially less than 5% of the DC voltage.
  11. Lighting system comprising a control system and lamp operating devices, having a central rectifier/PFC unit which supplies a number of lamp operating devices by means of at least one DC output circuit, characterized in that a power line modulator is provided in the DC output circuit, the control system being designed for modulating digital radio-frequency control signals onto the DC supply voltage in a power line technique, the operating devices in each case having a power line demodulator which is designed for reading out the digital radio-frequency control signals and evaluating them for controlling the lamp associated with the operating devices, that in the DC output circuit or the rectifier/PFC unit, a power line modulator is provided which is designed for modulating on supplied control signals.
  12. Lighting system according to Claim 11, characterized in that the power line demodulator is designed for initiating new switching-off of the associated lamp following a switch-off command.
  13. Lighting system according to Claim 12, characterized in that the lamp is a gas discharge lamp and the operating device is an electronic ballast, the gas discharge lamp being disconnectable by switching off an inverter in the ballast.
  14. Lighting system according to Claim 12 or 13, characterized in that the power line modulator is preceded by a switch, the power line modulator delivering a switching-off command to the output circuit when the switch is brought into an off position.
  15. Lighting system according to one of Claims 11 to 14, characterized in that the DC output circuit, the central rectifier/PFC unit and the power line demodulator are designed for a bidirectional transmission in power line technique in order to transmit signals from an operating device to the central rectifier/PFC unit.
  16. Lighting system according to Claim 15, characterized in that error and/or status messages can be transmitted from an operating device to the rectifier/PFC unit.
  17. Lighting system according to one of Claims 11 to 16, wherein the power line modulator is provided separately from the central rectifier/PFC unit and is designed for conveying signals with respect to the operating state of a lamp or of the associated operating means to the rectifier/PFC unit.
  18. Lighting system according to one of Claims 11 to 17, characterized in that the control commands can be addressed individually to the operating devices and/or groups of operating devices in that the control commands are provided with an address header or an individual output circuit is allocated to the operating device/devices to be addressed.
  19. Lighting system according to Claim 18, characterized in that individual lamps and/or groups of lamps can be started and/or dimmed individually by means of the power line control commands.
  20. Lighting system according to one of Claims 11 to 19, characterized in that the modulation level is less than 10%, especially less than 5% of the DC voltage.
EP04027898.8A 2004-01-14 2004-11-24 Control of lighting devices over a modulated DC bus Not-in-force EP1555859B1 (en)

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Also Published As

Publication number Publication date
EP1555859A1 (en) 2005-07-20
EP2288238B1 (en) 2014-10-15
EP2288238A2 (en) 2011-02-23
EP2288238A3 (en) 2012-10-31
DE102004002026A1 (en) 2005-08-04
HK1148897A1 (en) 2011-09-16

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