EP2146551A2 - Control of LED lamp, in particular for railway signalisation - Google Patents

Control of LED lamp, in particular for railway signalisation Download PDF

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Publication number
EP2146551A2
EP2146551A2 EP09162493A EP09162493A EP2146551A2 EP 2146551 A2 EP2146551 A2 EP 2146551A2 EP 09162493 A EP09162493 A EP 09162493A EP 09162493 A EP09162493 A EP 09162493A EP 2146551 A2 EP2146551 A2 EP 2146551A2
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EP
European Patent Office
Prior art keywords
led light
signal
light source
signal generator
color
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09162493A
Other languages
German (de)
French (fr)
Other versions
EP2146551B1 (en
EP2146551A3 (en
Inventor
Eike Berg
Stefan Burgass
Rolf Eckl
Uwe Frost
Norbert PÖPPLOW
Michael Zabel
Dirk Zimmermann
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Siemens Mobility GmbH
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Siemens AG
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Publication of EP2146551A3 publication Critical patent/EP2146551A3/en
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Publication of EP2146551B1 publication Critical patent/EP2146551B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/12—Visible signals
    • B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
    • B61L5/1809—Daylight signals
    • B61L5/1881—Wiring diagrams for power supply, control or testing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L7/00—Remote control of local operating means for points, signals, or track-mounted scotch-blocks
    • B61L7/06—Remote control of local operating means for points, signals, or track-mounted scotch-blocks using electrical transmission
    • B61L7/08—Circuitry
    • B61L7/10—Circuitry for light signals, e.g. for supervision, back-signalling
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/12—Controlling the intensity of the light using optical feedback
    • 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
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L2207/00—Features of light signals
    • B61L2207/02—Features of light signals using light-emitting diodes [LEDs]

Definitions

  • the invention relates to a signal generator which drives an LED light source of a certain color and cooperates with a signal box.
  • LEDs - light emitting diodes - instead of incandescent lamps are increasingly being used in many areas, especially in railway signaling.
  • LEDs are comparatively inexpensive, durable and bright.
  • the use of LEDs is difficult where the incandescent lamps are to be replaced by LEDs without changing an existing monitoring device. This is particularly true for light signal circuits of the railway, in which the proper function is usually monitored by a signal-technically safe current measurement on the part of the circuit.
  • Another special feature of railway light signals is the signaling at ambient conditions with non-constant light conditions, for example, outside of subway tunnels.
  • a lowering of the light output that is to say the operating voltage
  • signals are used that have multiple signal generator of different colors.
  • One design of these signals unites these signal generators such that all use one and the same light exit opening.
  • several LED light sources of specific color must be signal-technically controllable.
  • multi-purpose signal generators are realized, for example, in that a mirror system deflects the light of the incandescent lamp equipped with the corresponding color filter to a light exit opening.
  • the invention is based on the object to provide a signal generator of the generic type, which meets high safety requirements and which is easily adaptable to the settings on the side of the frame with respect to the color, that is, the respective signal concept.
  • the object is achieved in that the signal transmitter has an LED driver, which is connected on the input side via an EMC protection device with the interlocking and the output side with the LED light source and that acted upon by the LED light source or its energization measured value detection an actual operating mode, in particular with regard to daytime or nighttime operation, is connected to a comparator for comparing the actual operating mode and a desired operating mode specified by the signal box, wherein the comparison result is fed to a circuit breaker inserted in the current path of the LED driver.
  • the LED driver sets the lighting conditions for the LED light source based on the day / night information.
  • the LED light source consists of any parallel or / and series connection of individual LEDs.
  • the EMC - electromagnetic compatibility - protective device eliminates impermissible external voltages in the input signal. Via this input signal, the energy for the generation of light and / or the day / night information and / or the color information is transmitted.
  • the measured value acquisition records the optical and / or electrical operating values of the LED light source and prepares them.
  • Such operating values are in particular light intensity, current supply and color location.
  • the comparator compares the information content of the measured value acquisition with the desired operating mode. If the comparison shows, for example, that the light intensity does not correspond to the high value for daytime operation set by the control panel or the lower value for nighttime operation, the comparator activates the cut-off and reports the deviation to the interlocking.
  • means for eliminating interference voltage can be provided. This requirement arises in particular for larger distances for the transmission of energy by means of electrical lines, as can be coupled into this high-energy interference voltages.
  • a low-impedance line termination is preferably used, whereby the interference voltages are short-circuited.
  • FIG. 1 illustrates the essential functional units of a signal-safe signal generator 1, in which the control of a signal concept, realized by a red LED light source 2, is provided.
  • An unillustrated interlocking provides an input to the light generation energy.
  • This input signal is fed via an EMC protection device 3, a cut-off switch 4 and a device for noise suppression 5 a LED driver 6.
  • the LED driver 6 is also connected on the input side to a second input signal specified by the interlocking with regard to day / night information.
  • the LED driver 6 controls the energization of the LED light source 2, whose parameters, for example, with respect to light intensity, current or color location of a measured value detection 7 are measured. This measurement can be made optically, as in the embodiments of the FIGS.
  • a common lens 8.1 is provided, which includes both LED light sources 2 and 12, including associated measured value detection 7.
  • the common optics 8.1 the desired radiation characteristic is generated.
  • the light generation energy and the day / night information are provided by the switch side, lit, the corresponding LED light source 2 or 12.
  • a simultaneous power supply to both signal generators 1 and 11 is not desirable and in the rule Either on the control side or on the actuating part side, for example by an additional comparison of the output values of the two measured value detectors 7, is prevented.
  • the functionality of the multi-conceptual signal generator according to FIG. 2 be realized with only one signal generator 1.1.
  • the predetermined color information is guided by means of a selection circuit 13 to a changeover switch 14, which connects the LED driver 6 with the respective red LED light source 2 or green LED light source 12 to be controlled.
  • this multi-purpose signal generator 1.1 can also be dispensed with the device for noise suppression 5 in addition, since the color information does not have to be generated from a signal transmitted over greater distances.
  • the switch 14 may have a third switch position in which none of the LED light sources 2 and 12 is connected to the LED driver 6.
  • this off-state is dispensable when the ground state is always the most restrictive signal concept, namely driving the red LED light source 2, that is, the stop state.
  • optics 8.2 may be equipped with a common, acted upon by both LED light sources 2 and 12 measured value acquisition 7.1.
  • FIG. 4 shows a signal safe signaling device 1.2, the input sum signal includes the day / night information and the light generation energy. Compared to the arrangement according to FIG. 1
  • the mode detection 15 allows the separation of the day / night information from the sum signal, wherein the day / night information for internal processing is supplied to both the LED driver 6 and the comparator 9.
  • FIG. 3 expands to a multi-purpose signal generator on the basis of a single signal generator 1.3, as FIG. 5 shows.
  • a multi-purpose signal generator 1.4 which has to process an input sum signal including the day / night information and the color information is in FIG. 6 shown.
  • the mode recognition 15.1 serves the splitting off of the day / night information from the specific sum signal, which is not the light generation energy - as with the FIGS. 4 and 5 - but contains the color information.
  • the input sum signal includes all three input variables, namely day / night information, light generation energy and color information
  • a fail-safe multi-purpose signal generator 1.5 according to FIG. 7 to prefer. It is necessary to provide the EMC protection device 3 and the device for noise suppression 5 for each required signal term, that is before the selection circuit 13.
  • the device for interference suppression 5 should preferably be arranged in the current path behind the cut-off switch 4 be so that in case of an error in the device for noise suppression 5 also this is turned off.
  • This preferred variant is in the FIGS. 1 . 2 and 4 , that is, in the variants without selection circuit 13, shown.
  • the device for noise suppression 5 must be placed in front of the circuit breaker 4, since the selection circuit 13, the decision which signal concept to be controlled, only the output side of the device for noise suppression 5 can make. As a result, further measures are required to detect errors in the device for noise suppression 5.
  • the signaling safety of the multi-purpose signal generator would no longer exist if an error in the device for noise suppression 5 could lead to an additional current flow, which could simulate the driving interlocking a properly functioning signal.
  • a current limitation is provided in the device designed as a low-impedance line termination for noise suppression 5 to a value below the value, which is evaluated by the interlocking as a properly functioning signal.
  • the figuratively illustrated embodiments can be varied varied and expanded.
  • signaling technology-safe multi-purpose signal generators can be designed, which can implement more than two signal terms.
  • this arrangement can be used to simulate a conventional double filament lamp with separate main and secondary filament.
  • the arrangement according to FIG. 4 be doubled or there is a prioritization of the same color LED light sources 2 or 12.
  • a priority circuit which may optionally also be integrated in the selection circuit 13.
  • a modification may consist in that not a special signal input is provided for each signal concept, but that the color information is supplied via an input as a coded signal.
  • the selection circuit 13 is equipped with a corresponding decoder.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

The signal transmitter (1) has an light emitting diode driver (6), which is connected with the signal box by an at the input side and is connected with a light emitting diode light source (2) at the output side. The compensation output is applied to a circuit breaker looped in the current path of the light emitting diode driver.

Description

Die Erfindung betrifft einen Signalgeber, der eine LED-Lichtquelle bestimmter Farbe ansteuert und mit einem Stellwerk zusammenwirkt.The invention relates to a signal generator which drives an LED light source of a certain color and cooperates with a signal box.

Lichtsignale oder Leuchtzeichen auf der Basis von LEDs - Licht emittierende Dioden - anstelle von Glühlampen werden in vielen Bereichen, insbesondere in der Eisenbahnsignaltechnik zunehmend angewendet. LEDs sind vergleichsweise preiswert, langlebig und lichtstark. Schwierig ist der Einsatz von LEDs jedoch dort, wo ohne Änderung einer vorhandenen Überwachungseinrichtung die Glühlampen durch LEDs ersetzt werden sollen. Besonders gilt dieses für Lichtsignalschaltungen der Eisenbahn, bei welchen die ordnungsgemäße Funktion in der Regel durch eine signaltechnisch sichere Strommessung stellwerkseitig überwacht wird. Eine weitere Besonderheit bei Eisenbahnlichtsignalen ist die Signalisierung bei Umgebungsbedingungen mit nicht konstanten Lichtverhältnissen, beispielsweise außerhalb von U-Bahn-Tunneln. Hier ist schaltungstechnisch eine Absenkung der Lichtleistung, das heißt der Betriebsspannung, für den Nachtbetrieb gegenüber dem Tagbetrieb zu realisieren. Außerdem kommen Signale zum Einsatz, die mehrere Signalgeber unterschiedlicher Farbe besitzen. Eine Bauform dieser Signale vereint diese Signalgeber derart, dass alle ein und dieselbe Lichtaustrittsöffnung verwenden. Dabei müssen mehrere LED-Lichtquellen bestimmter Farbe signaltechnisch ansteuerbar sein. Für Lichtquellen auf Glühlampenbasis werden solche Mehrbegriffssignalgeber beispielsweise dadurch realisiert, dass ein Spiegelsystem das Licht der mit dem entsprechenden Farbfilter ausgestatteten Glühlampe zu einer Lichtaustrittsöffnung umlenkt.Light signals or LEDs on the basis of LEDs - light emitting diodes - instead of incandescent lamps are increasingly being used in many areas, especially in railway signaling. LEDs are comparatively inexpensive, durable and bright. However, the use of LEDs is difficult where the incandescent lamps are to be replaced by LEDs without changing an existing monitoring device. This is particularly true for light signal circuits of the railway, in which the proper function is usually monitored by a signal-technically safe current measurement on the part of the circuit. Another special feature of railway light signals is the signaling at ambient conditions with non-constant light conditions, for example, outside of subway tunnels. In terms of circuitry, a lowering of the light output, that is to say the operating voltage, can be realized here for the nighttime operation in comparison to the daytime operation. In addition, signals are used that have multiple signal generator of different colors. One design of these signals unites these signal generators such that all use one and the same light exit opening. In this case, several LED light sources of specific color must be signal-technically controllable. For light sources based on incandescent lamps, such multi-purpose signal generators are realized, for example, in that a mirror system deflects the light of the incandescent lamp equipped with the corresponding color filter to a light exit opening.

Der Erfindung liegt die Aufgabe zu Grunde, einen Signalgeber der gattungsgemäßen Art anzugeben, der hohen Sicherheitsanforderungen genügt und der problemlos an stellwerkseitige Vorgaben bezüglich der Farbe, das heißt des jeweiligen Signalbegriffs, anpassbar ist.The invention is based on the object to provide a signal generator of the generic type, which meets high safety requirements and which is easily adaptable to the settings on the side of the frame with respect to the color, that is, the respective signal concept.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass der Signalgeber einen LED-Treiber aufweist, welcher eingangsseitig über eine EMV-Schutzeinrichtung mit dem Stellwerk und ausgangsseitig mit der LED-Lichtquelle verbunden ist und dass eine von der LED-Lichtquelle oder deren Bestromung beaufschlagte Messwerterfassung zur Ermittlung einer Ist-Betriebsart, insbesondere bezüglich Tag- oder Nachtbetrieb, mit einem Vergleicher zum Vergleich der Ist-Betriebsart und einer von dem Stellwerk vorgegebenen Soll-Betriebsart verbunden ist, wobei das Vergleichsergebnis einem in den Strompfad des LED-Treibers eingeschleiften Abschalter zugeführt ist.According to the invention the object is achieved in that the signal transmitter has an LED driver, which is connected on the input side via an EMC protection device with the interlocking and the output side with the LED light source and that acted upon by the LED light source or its energization measured value detection an actual operating mode, in particular with regard to daytime or nighttime operation, is connected to a comparator for comparing the actual operating mode and a desired operating mode specified by the signal box, wherein the comparison result is fed to a circuit breaker inserted in the current path of the LED driver.

Durch konsequent modulare Bauform ergibt sich die Möglichkeit, die einzelnen Funktionseinheiten, nämlich LED-Treiber, EMV-Schutzeinrichtung, Messwerterfassung, Vergleicher, Abschalter und LED-Lichtquelle, jeweils separat an unterschiedliche Sicherheitsforderungen anzupassen sowie weitere Funktionseinheiten, beispielsweise zur Realisierung mehrerer Signalbegriffe, einzufügen. Die Funktionseinheiten erfüllen dabei folgende Teilaufgaben des Signalgebers:By consistently modular design, there is the possibility of the individual functional units, namely LED driver, EMC protection device, data acquisition, comparator, cut-off and LED light source, each separately adapted to different security requirements as well as other functional units, for example, to implement several signal terms to insert. The functional units fulfill the following subtasks of the signal generator:

Der LED-Treiber stellt die Speisebedingungen für die LED-Lichtquelle auf Basis der Tag/Nachtinformation ein. Die LED-Lichtquelle besteht dabei aus einer beliebigen Parallel-oder/und Reihenschaltung einzelner LEDs.The LED driver sets the lighting conditions for the LED light source based on the day / night information. The LED light source consists of any parallel or / and series connection of individual LEDs.

Die EMV- - elektromagnetische Verträglichkeit - Schutzeinrichtung eliminiert unzulässige Fremdspannungen im Eingangssignal. Über dieses Eingangssignal wird die Energie für die Lichterzeugung und/oder die Tag/Nachtinformation und/oder die Farbinformation übertragen.The EMC - electromagnetic compatibility - protective device eliminates impermissible external voltages in the input signal. Via this input signal, the energy for the generation of light and / or the day / night information and / or the color information is transmitted.

Die Messwerterfassung erfasst die optischen und/oder elektrischen Betriebswerte der LED-Lichtquelle und bereitet diese auf. Derartige Betriebswerte sind insbesondere Lichtstärke, Bestromung und Farbort.The measured value acquisition records the optical and / or electrical operating values of the LED light source and prepares them. Such operating values are in particular light intensity, current supply and color location.

Der Vergleicher vergleicht den Informationsgehalt der Messwerterfassung mit der Soll-Betriebsart. Ergibt der Vergleich beispielsweise, dass die Lichtstärke nicht dem stellwerkseitig vorgegebenem hohen Wert für Tagbetrieb oder dem niedrigerem Wert für Nachtbetrieb entspricht, aktiviert der Vergleicher den Abschalter und meldet die Abweichung an das Stellwerk.The comparator compares the information content of the measured value acquisition with the desired operating mode. If the comparison shows, for example, that the light intensity does not correspond to the high value for daytime operation set by the control panel or the lower value for nighttime operation, the comparator activates the cut-off and reports the deviation to the interlocking.

Zusätzlich können Mittel zur Eliminierung von Störspannung vorgesehen sein. Dieses Erfordernis ergibt sich insbesondere bei größeren Entfernungen für die Energieübertragung mittels elektrischer Leitungen, da in diese energiereiche Störspannungen eingekoppelt werden können. Um diese Störspannungen zu eliminieren, wird vorzugsweise ein niederohmiger Leitungsabschluss verwendet, wodurch die Störspannungen kurzgeschlossen werden.In addition, means for eliminating interference voltage can be provided. This requirement arises in particular for larger distances for the transmission of energy by means of electrical lines, as can be coupled into this high-energy interference voltages. In order to eliminate these interference voltages, a low-impedance line termination is preferably used, whereby the interference voltages are short-circuited.

Vorteilhafte Ausgestaltungen des erfindungsgemäßen Signalgebers sind in den Unteransprüchen gekennzeichnet und werden nachfolgend anhand figürlicher Darstellungen näher erläutert.Advantageous embodiments of the signal generator according to the invention are characterized in the subclaims and are explained in more detail below with reference to figurative representations.

Es zeigen:

Figur 1
das Grundkonzept eines signaltechnisch sicheren Signalgebers,
Figur 2
einen signaltechnisch sicheren Mehrbegriffssignalgeber als Doppelsignalgeber,
Figur 3
einen signaltechnisch sicheren Mehrbegriffssignalgeber mit Signalbegriffsauswahl,
Figur 4
einen signaltechnisch sicheren Signalgeber für ein Eingangs-Summensignal bezüglich Tag/Nachtinformation und Lichterzeugungsenergie,
Figur 5
einen signaltechnisch sicheren Mehrbegriffssignalgeber für ein Eingangs-Summensignal gemäß Figur 4,
Figur 6
einen signaltechnisch sicheren Mehrbegriffssignalgeber für ein Eingangs-Summensignal bezüglich Tag/Nachtinformation und Farbinformation und
Figur 7
einen signaltechnisch sicheren Mehrbegriffssignalgeber für ein Eingangs-Summensignal bezüglich Tag/Nachtinformation, Lichterzeugungsenergie und Farbinformation.
Show it:
FIG. 1
the basic concept of a fail-safe signaling device,
FIG. 2
a signal-technically safe multi-purpose signal generator as a double signal generator,
FIG. 3
a signal-technically secure multi-purpose signal generator with signal term selection,
FIG. 4
a signal-safe signal generator for an input sum signal with regard to day / night information and light generation energy,
FIG. 5
a signal technically safe multi-conceptual signal generator for an input sum signal according to FIG. 4 .
FIG. 6
a signal technically secure multi-conceptual signal generator for an input sum signal with respect to day / night information and color information and
FIG. 7
a signal technically secure multi-conceptual signal generator for an input sum signal with respect to day / night information, light generation energy and color information.

Figur 1 veranschaulicht die wesentlichen Funktionseinheiten eines signaltechnisch sicheren Signalgebers 1, bei dem die Ansteuerung eines Signalbegriffs, realisiert durch eine rote LED-Lichtquelle 2, vorgesehen ist. Ein nicht dargestelltes Stellwerk stellt ein Eingangssignal bezüglich der Lichterzeugungsenergie zur Verfügung. Dieses Eingangssignal wird über eine EMV-Schutzeinrichtung 3, einen Abschalter 4 und einer Einrichtung zur Störspannungsunterdrückung 5 einem LED-Treiber 6 zugeführt. Der LED-Treiber 6 ist eingangsseitig außerdem mit einem zweiten vom Stellwerk vorgegebenen Eingangssignal bezüglich Tag/Nachtinformation verbunden. Der LED-Treiber 6 steuert die Bestromung der LED-Lichtquelle 2, deren Parameter, beispielsweise bezüglich Lichtstärke, Bestromung oder Farbort von einer Messwerterfassung 7 gemessen werden. Diese Messung kann optisch erfolgen, wie in den Ausführungsbeispielen der Figuren 1 bis 7 in Form einer Optikbaugruppe 8, bestehend aus der LED-Lichtquelle 2 und der Messwerterfassung 7, dargestellt, oder durch Messung elektrischer Eigenschaften der LED-Lichtquelle 2, beispielsweise Flussspannung oder Flussstrom, erfolgen. Das Ausgangssignal der Messwerterfassung 7 ist einem Vergleicher 9 zugeführt, der außerdem mit dem Eingangssignal bezüglich der Tag/Nachtinformation verbunden ist und bei Nichtübereinstimmung der gemessenen Ist-Betriebsart mit der durch die Tag/Nachtinformation vorgegebenen Soll-Betriebsart den Abschalter 4 im Strompfad des LED-Treibers 6 aktiviert. Zusätzlich ist eine Stromversorgungsbaugruppe 10 erforderlich, welche die Stromversorgung der Funktionseinheiten des Signalgebers 1 übernimmt. FIG. 1 illustrates the essential functional units of a signal-safe signal generator 1, in which the control of a signal concept, realized by a red LED light source 2, is provided. An unillustrated interlocking provides an input to the light generation energy. This input signal is fed via an EMC protection device 3, a cut-off switch 4 and a device for noise suppression 5 a LED driver 6. The LED driver 6 is also connected on the input side to a second input signal specified by the interlocking with regard to day / night information. The LED driver 6 controls the energization of the LED light source 2, whose parameters, for example, with respect to light intensity, current or color location of a measured value detection 7 are measured. This measurement can be made optically, as in the embodiments of the FIGS. 1 to 7 in the form of an optical assembly 8, consisting of the LED light source 2 and the measured value acquisition 7, shown, or by measuring electrical properties of the LED light source 2, for example, forward voltage or current flow done. The output signal of the measured value acquisition 7 is fed to a comparator 9, which is also connected to the input signal with respect to the day / night information and if the measured actual operating mode does not match the desired operating mode specified by the day / night information, the cut-off switch 4 in the current path of the LED. Driver 6 is activated. In addition, a power supply module 10 is required, which takes over the power supply of the functional units of the signal generator 1.

Durch Verdoppelung des Signalgebers 1, 11 ergibt sich auf einfache Weise ein signaltechnisch sicherer Doppelsignalgeber zur Ansteuerung der roten LED-Lichtquelle 2 und einer grünen LED-Lichtquelle 12, wie Figur 2 zeigt. Dabei ist eine gemeinsame Optik 8.1 vorgesehen, die beide LED-Lichtquellen 2 und 12 inklusive jeweils zugeordneter Messwerterfassung 7 umfasst. Durch die gemeinsame Optik 8.1 wird die gewünschte Abstrahlcharakteristik erzeugt. Je nachdem, an welchem der beiden Signalgeber 1 und 11 die Lichterzeugungsenergie und die Tag/Nachtinformation stellwerkseitig zur Verfügung gestellt werden, leuchtet die entsprechende LED-Lichtquelle 2 oder 12. Eine gleichzeitige Energiezuführung zu beiden Signalgebern 1 und 11 ist in der Regel nicht erwünscht und wird entweder stellwerkseitig oder stellteilseitig, beispielsweise durch einen zusätzlichen Vergleich der Ausgangswerte der beiden Messwerterfassungen 7, verhindert.By doubling the signal generator 1, 11 results in a simple way a signal safe double signal generator for driving the red LED light source 2 and a green LED light source 12, such as FIG. 2 shows. In this case, a common lens 8.1 is provided, which includes both LED light sources 2 and 12, including associated measured value detection 7. By the common optics 8.1 the desired radiation characteristic is generated. Depending on which of the two signal generators 1 and 11, the light generation energy and the day / night information are provided by the switch side, lit, the corresponding LED light source 2 or 12. A simultaneous power supply to both signal generators 1 and 11 is not desirable and in the rule Either on the control side or on the actuating part side, for example by an additional comparison of the output values of the two measured value detectors 7, is prevented.

Um Baugruppen einzusparen, kann die Funktionalität des Mehrbegriffssignalgebers gemäß Figur 2 auch mit nur einem Signalgeber 1.1 realisiert werden. Dazu wird die vorgegebene Farbinformation mittels einer Auswahlschaltung 13 auf einen Umschalter 14 geführt, welcher den LED-Treiber 6 mit der jeweils anzusteuernden roten LED-Lichtquelle 2 oder grünen LED-Lichtquelle 12 verbindet. Bei diesem Mehrbegriffssignalgeber 1.1 kann zusätzlich auch noch auf die Einrichtung zur Störspannungsunterdrückung 5 verzichtet werden, da die Farbinformation nicht aus einem über größere Entfernungen übertragenen Signal generiert werden muss.To save assemblies, the functionality of the multi-conceptual signal generator according to FIG. 2 be realized with only one signal generator 1.1. For this purpose, the predetermined color information is guided by means of a selection circuit 13 to a changeover switch 14, which connects the LED driver 6 with the respective red LED light source 2 or green LED light source 12 to be controlled. In this multi-purpose signal generator 1.1 can also be dispensed with the device for noise suppression 5 in addition, since the color information does not have to be generated from a signal transmitted over greater distances.

Zusätzlich kann der Umschalter 14 eine dritte Schaltstellung aufweisen, bei welcher keine der LED-Lichtquellen 2 und 12 mit dem LED-Treiber 6 verbunden ist. Dieser Aus-Zustand ist jedoch entbehrlich, wenn der Grundzustand immer der restriktivste Signalbegriff, nämlich Ansteuerung der roten LED-Lichtquelle 2, das heißt der Halt-Zustand, ist.In addition, the switch 14 may have a third switch position in which none of the LED light sources 2 and 12 is connected to the LED driver 6. However, this off-state is dispensable when the ground state is always the most restrictive signal concept, namely driving the red LED light source 2, that is, the stop state.

Zur weiteren Vereinfachung kann die Optik 8.2 mit einer gemeinsamen, von beiden LED-Lichtquellen 2 und 12 beaufschlagten Messwerterfassung 7.1 ausgestattet sein.To further simplify the optics 8.2 may be equipped with a common, acted upon by both LED light sources 2 and 12 measured value acquisition 7.1.

Bei den Ausführungsformen der Figuren 1 bis 3 war vorausgesetzt, dass die Lichterzeugungsenergie getrennt von der Tag/Nachtinformation als Eingangssignal für den Signalgeber 1 bzw. 1.1 zur Verfügung steht. Derart getrennte Eingangssignale haben sich jedoch erst bei modernster Ansteuertechnik durchgesetzt. Bei älterer Ansteuertechnik liegt häufig ein Summensignal als Eingangssignal für den Signalgeber 1 bzw. 1.1 zur Verfügung. Dieses Summensignal kann dabei verschiedene Zusammensetzungen aufweisen und verschiedene Signalgeberarchitekturen erfordern, die nachfolgend erläutert werden.In the embodiments of the FIGS. 1 to 3 It was assumed that the light generation energy is available separately from the day / night information as an input signal for the signal generator 1 or 1.1 available. However, such separate input signals have prevailed only with the most modern control technology. With older control technology is often a sum signal as an input signal for the signal generator 1 or 1.1 available. This sum signal can have different compositions and require different signal generator architectures, which are explained below.

Figur 4 zeigt einen signaltechnisch sicheren Signalgeber 1.2, dessen Eingangs-Summensignal die Tag/Nachtinformation und die Lichterzeugungsenergie beinhaltet. Im Vergleich zur Anordnung nach Figur 1 besitzt dieser Signalgeber 1.2 zusätzlich eine Baugruppe zur Betriebsartenerkennung 15. Die Betriebsartenerkennung 15 ermöglicht die Abtrennung der Tag/Nachtinformation von dem Summensignal, wobei die Tag/Nachtinformation zur internen Weiterverarbeitung sowohl dem LED-Treiber 6 als auch dem Vergleicher 9 zugeführt wird. FIG. 4 shows a signal safe signaling device 1.2, the input sum signal includes the day / night information and the light generation energy. Compared to the arrangement according to FIG. 1 The mode detection 15 allows the separation of the day / night information from the sum signal, wherein the day / night information for internal processing is supplied to both the LED driver 6 and the comparator 9.

Dieses Grundprinzip lässt sich analog zu Figur 3 zu einem Mehrbegriffssignalgeber auf der Basis eines einzigen Signalgebers 1.3 erweitern, wie Figur 5 zeigt.This basic principle can be analogous to FIG. 3 expand to a multi-purpose signal generator on the basis of a single signal generator 1.3, as FIG. 5 shows.

Ein Mehrbegriffssignalgeber 1.4, der ein Eingangs-Summensignal, welches die Tag/Nachtinformation und die Farbinformation enthält, verarbeiten muss, ist in Figur 6 dargestellt. Hier dient die Betriebsartenerkennung 15.1 der Abspaltung der Tag/Nachtinformation aus dem spezifischen Summensignal, welches nicht die Lichterzeugungsenergie - wie bei den Figuren 4 und 5 - sondern die Farbinformation enthält.A multi-purpose signal generator 1.4 which has to process an input sum signal including the day / night information and the color information is in FIG. 6 shown. Here, the mode recognition 15.1 serves the splitting off of the day / night information from the specific sum signal, which is not the light generation energy - as with the FIGS. 4 and 5 - but contains the color information.

Für den Fall, dass das Eingangs-Summensignal alle drei Eingangsgrößen, nämlich Tag/Nachtinformation, Lichterzeugungsenergie und Farbinformation, beinhaltet, ist ein signaltechnisch sicherer Mehrbegriffssignalgeber 1.5 gemäß Figur 7 zu bevorzugen. Dabei ist es notwendig, die EMV-Schutzeinrichtung 3 und die Einrichtung zur Störspannungsunterdrückung 5 für jeden benötigten Signalbegriff, das heißt vor der Auswahlschaltung 13 vorzusehen.In the event that the input sum signal includes all three input variables, namely day / night information, light generation energy and color information, a fail-safe multi-purpose signal generator 1.5 according to FIG FIG. 7 to prefer. It is necessary to provide the EMC protection device 3 and the device for noise suppression 5 for each required signal term, that is before the selection circuit 13.

Vorzugsweise sollte die Einrichtung zur Störspannungsunterdrückung 5 im Strompfad hinter dem Abschalter 4 angeordnet werden, damit bei einem Fehler in der Einrichtung zur Störspannungsunterdrückung 5 auch diese abgeschaltet wird. Diese Vorzugsvariante ist in den Figuren 1, 2 und 4, das heißt bei den Varianten ohne Auswahlschaltung 13, dargestellt. Bei der Ausführungsform gemäß Figur 7 muss jedoch die Einrichtung zur Störspannungsunterdrückung 5 vor dem Abschalter 4 angeordnet werden, da die Auswahlschaltung 13 die Entscheidung, welcher Signalbegriff angesteuert werden soll, erst ausgangsseitig der Einrichtung zur Störspannungsunterdrückung 5 treffen kann. Infolge dessen sind weitere Maßnahmen erforderlich, um Fehler in der Einrichtung zur Störspannungsunterdrückung 5 zu erkennen. Die signaltechnische Sicherheit des Mehrbegriffssignalgebers wäre nicht mehr gegeben, wenn ein Fehler in der Einrichtung zur Störspannungsunterdrückung 5 zu einem zusätzlichen Stromfluss führen könnte, der dem ansteuernden Stellwerk ein ordnungsgemäß funktionierendes Signal vortäuschen könnte. Um diesem potentiell gefährlichen Zustand entgegenzuwirken, ist eine Strombegrenzung in der als niederohmiger Leitungsabschluss ausgebildeten Einrichtung zur Störspannungsunterdrückung 5 auf einen Wert unterhalb des Wertes vorgesehen, welcher vom Stellwerk als ordnungsgemäß funktionierendes Signal bewertet wird.The device for interference suppression 5 should preferably be arranged in the current path behind the cut-off switch 4 be so that in case of an error in the device for noise suppression 5 also this is turned off. This preferred variant is in the FIGS. 1 . 2 and 4 , that is, in the variants without selection circuit 13, shown. In the embodiment according to FIG. 7 However, the device for noise suppression 5 must be placed in front of the circuit breaker 4, since the selection circuit 13, the decision which signal concept to be controlled, only the output side of the device for noise suppression 5 can make. As a result, further measures are required to detect errors in the device for noise suppression 5. The signaling safety of the multi-purpose signal generator would no longer exist if an error in the device for noise suppression 5 could lead to an additional current flow, which could simulate the driving interlocking a properly functioning signal. In order to counteract this potentially dangerous condition, a current limitation is provided in the device designed as a low-impedance line termination for noise suppression 5 to a value below the value, which is evaluated by the interlocking as a properly functioning signal.

Die figürlich dargestellten Ausführungsbeispiele können vielfältig variiert und ausgebaut werden. Insbesondere können signaltechnisch sichere Mehrbegriffssignalgeber konzipiert werden, welche mehr als zwei Signalbegriffe umsetzen können.The figuratively illustrated embodiments can be varied varied and expanded. In particular, signaling technology-safe multi-purpose signal generators can be designed, which can implement more than two signal terms.

Werden gleichfarbige LED-Lichtquellen 2 bzw. 12 in einem Mehrbegriffssignalgeber verwendet, so lässt sich diese Anordnung zur Nachbildung einer konventionellen Doppelfadenlampe mit getrenntem Haupt- und Nebenfaden verwenden. Dazu kann beispielsweise die Anordnung nach Figur 4 verdoppelt werden oder es erfolgt eine Priorisierung der gleichfarbigen LED-Lichtquellen 2 bzw. 12. Zur Priorisierung kann eine Vorrangschaltung vorgesehen sein, die gegebenenfalls auch in der Auswahlschaltung 13 integriert sein kann.If the same color LED light sources 2 and 12 are used in a multi-signal signal generator, this arrangement can be used to simulate a conventional double filament lamp with separate main and secondary filament. For this example, the arrangement according to FIG. 4 be doubled or there is a prioritization of the same color LED light sources 2 or 12. For prioritization may be provided a priority circuit, which may optionally also be integrated in the selection circuit 13.

Eine weitere Variante betrifft alle Ausführungsbeispiele, die die Auswahlschaltung 13 aufweisen, nämlich die Varianten der Figuren 3, 5, 6 und 7. Eine Abwandlung kann darin bestehen, dass nicht für jeden Signalbegriff ein spezieller Signaleingang vorgesehen ist, sondern dass die Farbinformation über einen Eingang als codiertes Signal zugeführt wird. In diesem Fall ist die Auswahlschaltung 13 mit einem entsprechenden Decoder ausgestattet.Another variant relates to all embodiments, which have the selection circuit 13, namely the variants of Figures 3 . 5 . 6 and 7 , A modification may consist in that not a special signal input is provided for each signal concept, but that the color information is supplied via an input as a coded signal. In this case, the selection circuit 13 is equipped with a corresponding decoder.

Claims (6)

Signalgeber, der eine LED-Lichtquelle (2, 12) bestimmter Farbe ansteuert und mit einem Stellwerk zusammenwirkt,
dadurch gekennzeichnet, dass
der Signalgeber (1, 11, 1.1, 1.2, 1.3, 1.4, 1.5) einen LED-Treiber (6) aufweist, welcher eingangsseitig über eine EMV-Schutzeinrichtung (3) mit dem Stellwerk und ausgangsseitig mit der LED-Lichtquelle (2, 12) verbunden ist und dass eine von der LED-Lichtquelle (2, 12) oder deren Bestromung beaufschlagte Messwerterfassung (7, 7.1) zur Ermittlung einer Ist-Betriebsart, insbesondere bezüglich Tag- oder Nachtbetrieb, mit einem Vergleicher (9) zum Vergleich der Ist-Betriebsart mit einer von dem Stellwerk vorgegebenen Soll-Betriebsart verbunden ist, wobei das Vergleichsergebnis einem in den Strompfad des LED-Treibers (6) eingeschleiften Abschalter (4) zugeführt ist.Signaling device, which activates a LED light source (2, 12) of a certain color and interacts with an interlocking,
characterized in that
the signal transmitter (1, 11, 1.1, 1.2, 1.3, 1.4, 1.5) has an LED driver (6), which on the input side via an EMC protection device (3) with the interlocking and the output side with the LED light source (2, 12 ) and that one of the LED light source (2, 12) or their energization acted Meßwerterfassung (7, 7.1) for determining an actual mode, in particular with respect to daytime or nighttime operation, with a comparator (9) for comparing the actual Mode is connected to a predetermined by the signal box target mode, wherein the comparison result is fed to a in the current path of the LED driver (6) looped switch (4). Signalgeber nach Anspruch 1,
dadurch gekennzeichnet, dass
mehrere LED-Lichtquellen (2 und 12) unterschiedlicher Farbe vorgesehen sind, wobei jeder LED-Lichtquelle (2, 12) ein Signalgeber (1, 11) zugeordnet ist.Signaling device according to claim 1,
characterized in that
a plurality of LED light sources (2 and 12) of different color are provided, each LED light source (2, 12) is associated with a signal generator (1, 11). Signalgeber nach Anspruch 1,
dadurch gekennzeichnet, dass
mehrere LED-Lichtquellen (2 und 12) unterschiedlicher Farbe vorgesehen sind, wobei ein gemeinsamer Signalgeber (1.1, 1.3, 1.4, 1.5) eine Auswahlschaltung (13) zur stellwerkseitig vorgegebenen Farbauswahl aufweist, welche einen Umschalter (14) zur Verbindung des LED-Treibers (6) mit der ausgewählten LED-Lichtquelle (2 oder 12) ansteuert.Signaling device according to claim 1,
characterized in that
a plurality of LED light sources (2 and 12) of different color are provided, wherein a common signal generator (1.1, 1.3, 1.4, 1.5) has a selection circuit (13) for the frame side predetermined color selection, which includes a switch (14) for connecting the LED driver (6) with the selected LED light source (2 or 12). Signalgeber nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, dass
die Soll-Betriebsart mittels einer Betriebsartenerkennung (15, 15.1) aus einem stellwerkseitig vorgegebenen Summensignal, welches die Soll-Betriebsart und eine Lichterzeugungsenergie oder die Soll-Betriebsart und eine Farbinformation oder die Soll-Betriebsart, die Lichterzeugungsenergie und die Farbinformation beinhaltet, abspaltbar ist, wobei die Betriebsartenerkennung (15, 15.1) ausgangsseitig mit dem LED-Treiber (6) und dem Vergleicher (9) verbunden ist.Signaling device according to one of the preceding claims,
characterized in that
the target mode is cleavable by means of a mode recognition (15, 15.1) from a set signal signal including the target mode and a light generation energy or the target mode and a color information or the target mode, the light generation energy and the color information, wherein the mode recognition (15, 15.1) on the output side with the LED driver (6) and the comparator (9) is connected. Signalgeber nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, dass
im Strompfad des LED-Treibers (6) Mittel zur Eliminierung von Störspannungen (5) vorgesehen sind.Signaling device according to one of the preceding claims,
characterized in that
in the current path of the LED driver (6) means for eliminating interference voltages (5) are provided. Signalgeber nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, dass
mehrere LED-Lichtquellen (2, 12) gleicher Farbe vorgesehen sind, wobei entweder jeder LED-Lichtquelle (2, 12) ein in einer vorgegebenen Rangordnung ansteuerbarer Signalgeber (1, 11) zugeordnet ist oder ein gemeinsamer Signalgeber (1.1, 1.3, 1.4, 1.5) eine Vorrangschaltung zur bevorzugten Ansteuerung einer der LED-Lichtquellen (2, 12) aufweist.Signaling device according to one of the preceding claims,
characterized in that
a plurality of LED light sources (2, 12) of the same color are provided, wherein either each LED light source (2, 12) is assigned a controllable in a predetermined ranking signal generator (1, 11) or a common signal generator (1.1, 1.3, 1.4, 1.5) has a priority circuit for preferential control of one of the LED light sources (2, 12).
EP09162493.2A 2008-06-23 2009-06-11 Control of LED lamp, in particular for railway signalisation Active EP2146551B1 (en)

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