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EP2146551B1 - 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
EP2146551B1
EP2146551B1 EP09162493.2A EP09162493A EP2146551B1 EP 2146551 B1 EP2146551 B1 EP 2146551B1 EP 09162493 A EP09162493 A EP 09162493A EP 2146551 B1 EP2146551 B1 EP 2146551B1
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EP
European Patent Office
Prior art keywords
signal
led light
mode
light source
signal transmitter
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.)
Active
Application number
EP09162493.2A
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German (de)
French (fr)
Other versions
EP2146551A2 (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 Mobility GmbH
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Publication of EP2146551A2 publication Critical patent/EP2146551A2/en
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 controls a plurality of LED light sources of a certain color and is designed to interact 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 generator has a selection circuit for Stelltechnik wh predetermined color selection, which drives a switch for connecting an LED driver of the signal generator with the selected LED light source, the LED driver on the input side via an EMC protection device with the Signaling is formed connectable and the output side is connected to the LED light source, wherein that acted upon by the LED light source or their energization measured value to determine an actual mode, especially with respect to daytime or nighttime operation, with a comparator for comparing the actual mode and one of the signal box predetermined target mode is connected, wherein the comparison result is fed to a looped into the current path of the LED driver circuit breaker.
  • a selection circuit for Stelltechnik wh predetermined color selection which drives a switch for connecting an LED driver of the signal generator with the selected LED light source, the LED driver on the input side via an EMC protection device with the Signaling is formed connectable and the output side is connected to the LED light source, wherein that acted upon by the LED light source or their energization measured value to determine an
  • 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 term 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 take place optically, as shown in the figures in the form of an optical assembly 8, 8.1, or by measuring electrical properties of the LED light source 2, for example, forward voltage or current flow.
  • 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.
  • a power supply module 10 is required, which takes over the power supply of the functional units of the signal generator 1.
  • a signal safe double signal generator for driving the red LED light source 2 and a green LED light source 12.
  • a common optics 8 is provided, the two LED light sources 2 and 12 including, respectively associated measured value acquisition 7 includes.
  • the common optics 8 the desired radiation characteristic is generated.
  • the light generation energy and the day / night information are provided by the switch side, illuminates the corresponding LED light source 2 or 12.
  • a simultaneous power supply to both signal transmitters 1 and 11 is usually not desirable and is either on the control side or part of the digit side, for example by an additional comparison the output values of the two measured value detections 7, prevented.
  • the functionality of the double signal generator is according to FIG. 1 realized according to the invention 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 8.1 may be equipped with a common, acted upon by both LED light sources 2 and 12 measured value acquisition 7.1.
  • FIG. 3 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. 2 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.
  • a multi-purpose signal generator 1.3 which has to process an input sum signal including the day / night information and the color information, is in FIG. 4 shown.
  • the mode recognition 15.1 serves to split off the day / night information from the specific sum signal, which is not the light generation energy - as in FIG. 3 - 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 1.4 according to FIG. 5 to 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 noise suppression 5 should be placed in the current path behind the circuit breaker 4, so that in case of an error in the device for noise suppression 5 also this is turned off, as in FIG. 1 , that is 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. If the same color LED light sources 2 and 12 are used in a multi-purpose signal generator, this arrangement can be used to simulate a conventional double filament lamp with a separate main and secondary filament. For this purpose, for example, a prioritization of the same color LED light sources 2 and 12 are used. To prioritize a priority circuit may be provided, which may optionally also be integrated in the selection circuit 13.
  • a further modification may be 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)

Description

Die Erfindung betrifft einen Signalgeber, der mehrere LED-Lichtquellen bestimmter Farbe ansteuert und zum Zusammenwirken mit einem Stellwerk ausgebildet ist.The invention relates to a signal generator, which controls a plurality of LED light sources of a certain color and is designed to interact 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.

In der WO 2007/036509 A1 ist ein Verfahren und eine Einrichtung zur Überwachung des Lichtsignals eines elektro-optischen Leuchtelements beschrieben.In the WO 2007/036509 A1 a method and a device for monitoring the light signal of an electro-optical luminous element is described.

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 eine Auswahlschaltung zur stellwerkseitig vorgegebenen Farbauswahl aufweist, welche einen Umschalter zur Verbindung eines LED-Treibers des Signalgebers mit der ausgewählten LED-Lichtquelle ansteuert, wobei der LED-Treiber eingangsseitig über eine EMV-Schutzeinrichtung mit dem Stellwerk verbindbar ausgebildet ist und ausgangsseitig mit der LED-Lichtquelle verbunden ist, wobei 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 vorgebbaren 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 generator has a selection circuit for Stellwerkseitig predetermined color selection, which drives a switch for connecting an LED driver of the signal generator with the selected LED light source, the LED driver on the input side via an EMC protection device with the Signaling is formed connectable and the output side is connected to the LED light source, wherein that acted upon by the LED light source or their energization measured value to determine an actual mode, especially with respect to daytime or nighttime operation, with a comparator for comparing the actual mode and one of the signal box predetermined target mode is connected, wherein the comparison result is fed to a looped into the current path of the LED driver circuit breaker.

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 zusätzlieher Farben, 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, data acquisition, comparator, cut-off and LED light source, each separately adapted to different security requirements and other functional units, for example, to realize additional Colors 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 Mehrbegriffssignalgebers als Doppelsignalgeber ohne Signalbegriffsauswahl,
Figur 2
eine erste Ausführungsform eines erfindungsgemäßen signaltechnisch sicheren Mehrbegriffssignalgebers mit Signalbegriffsauswahl,
Figur 3
eine zweite Ausführungsform eines signaltechnisch sicheren Mehrbegriffssignalgebers für ein Eingangs-Summensignal bezüglich Tag/Nachtinformation und Lichterzeugungsenergie,
Figur 4
eine dritte Ausführungsform eines signaltechnisch sicheren Mehrbegriffssignalgebers für ein Eingangs-Summensignal bezüglich Tag/Nachtinformation und Farbinformation und
Figur 5
eine vierte Ausführungsform eines signaltechnisch sicheren Mehrbegriffssignalgebers für ein Eingangs-Summensignal bezüglich Tag/Nachtinformation, Lichterzeugungsenergie und Farbinformation.
Show it:
FIG. 1
the basic concept of a signal-technically safe multi-purpose signal generator as a double signal generator without signal term selection,
FIG. 2
A first embodiment of a signal-technically secure multi-purpose signal generator with signal term selection,
FIG. 3
a second embodiment of a fail-safe multi-point signal generator for an input sum signal with respect to day / night information and light generation energy,
FIG. 4
a third embodiment of a fail-safe multi-conceptual signal generator for an input sum signal with respect to day / night information and color information and
FIG. 5
a fourth embodiment of a signal-safe 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 Figuren in Form einer Optikbaugruppe 8, 8.1 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 term 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 take place optically, as shown in the figures in the form of an optical assembly 8, 8.1, or by measuring electrical properties of the LED light source 2, for example, forward voltage or current flow. 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. Dabei ist eine gemeinsame Optik 8 vorgesehen, die beide LED-Lichtquellen 2 und 12 inklusive jeweils zugeordneter Messwerterfassung 7 umfasst. Durch die gemeinsame Optik 8 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. In this case, a common optics 8 is provided, the two LED light sources 2 and 12 including, respectively associated measured value acquisition 7 includes. By the common optics 8, the desired radiation characteristic is generated. Depending on which of the two signal transmitters 1 and 11 the light generation energy and the day / night information are provided by the switch side, illuminates the corresponding LED light source 2 or 12. A simultaneous power supply to both signal transmitters 1 and 11 is usually not desirable and is either on the control side or part of the digit side, for example by an additional comparison the output values of the two measured value detections 7, prevented.

Um Baugruppen einzusparen, wird die Funktionalität des Doppelsignalgebers gemäß Figur 1 erfindungsgemäß mit nur einem Signalgeber 1.1 realisiert. Dazu wird gemäß Figur 2 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 double signal generator is according to FIG. 1 realized according to the invention with only one signal generator 1.1. This is done according to FIG. 2 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 8.1 mit einer gemeinsamen, von beiden LED-Lichtquellen 2 und 12 beaufschlagten Messwerterfassung 7.1 ausgestattet sein.To further simplify the optics 8.1 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 und 2 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 ist häufig ein Summensignal als Eingangssignal für den Signalgeber 1 bzw. 1.1 vorhanden. Dieses Summensignal kann dabei verschiedene Zusammensetzungen aufweisen und verschiedene Signalgeberarchitekturen erfordern, die nachfolgend erläutert werden.In the embodiments of the FIGS. 1 and 2 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 3 zeigt einen signaltechnisch sicheren Signalgeber 1.2, dessen Eingangs-Summensignal die Tag/Nachtinformation und die Lichterzeugungsenergie beinhaltet. Im Vergleich zur Anordnung nach Figur 2 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. 3 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. 2 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.

Ein Mehrbegriffssignalgeber 1.3, der ein Eingangs-Summensignal, welches die Tag/Nachtinformation und die Farbinformation enthält, verarbeiten muss, ist in Figur 4 dargestellt. Hier dient die Betriebsartenerkennung 15.1 der Abspaltung der Tag/Nachtinformation aus dem spezifischen Summensignal, welches nicht die Lichterzeugungsenergie - wie bei Figur 3 - sondern die Farbinformation enthält.A multi-purpose signal generator 1.3, which has to process an input sum signal including the day / night information and the color information, is in FIG. 4 shown. Here, the mode recognition 15.1 serves to split off the day / night information from the specific sum signal, which is not the light generation energy - as in FIG. 3 - 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 1.4 gemäß Figur 5 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 1.4 according to FIG FIG. 5 to 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, wie in Figur 1, das heißt ohne Auswahlschaltung 13, dargestellt. Bei der Ausführungsform gemäß Figur 5 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.Preferably, the device for noise suppression 5 should be placed in the current path behind the circuit breaker 4, so that in case of an error in the device for noise suppression 5 also this is turned off, as in FIG. 1 , that is without selection circuit 13, shown. In the embodiment according to FIG. 5 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. Werden gleichfarbige LED-Lichtquellen 2 und 12 in einem Mehrbegriffssignalgeber verwendet, so lässt sich diese Anordnung zur Nachbildung einer konventionellen Doppelfadenlampe mit getrenntem Haupt- und Nebenfaden verwenden. Dazu kann beispielsweise eine Priorisierung der gleichfarbigen LED-Lichtquellen 2 und 12 dienen. Zur Priorisierung kann eine Vorrangschaltung vorgesehen sein, die gegebenenfalls auch in der Auswahlschaltung 13 integriert sein kann.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. If the same color LED light sources 2 and 12 are used in a multi-purpose signal generator, this arrangement can be used to simulate a conventional double filament lamp with a separate main and secondary filament. For this purpose, for example, a prioritization of the same color LED light sources 2 and 12 are used. To prioritize a priority circuit may be provided, which may optionally also be integrated in the selection circuit 13.

Eine weitere 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. A further modification may be 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 (4)

  1. Signal transmitter, which actuates a plurality of LED light sources (2, 12) of a particular colour and is designed to interact with a signal box, wherein the signal emitter (1.2, 1.3, 1.4) has a selection circuit (13) for colour selection which is able to be predetermined on the signal box side, which actuates a changeover switch (14) to connect an LED driver (6) of the signal transmitter (1.2, 1.3, 1.4) to the LED light source (2 or 12) in the selected colour, wherein the LED driver (6) is designed to be able to be connected to the signal box on the input side via an EMC protection facility (3) and is connected on the output side to the LED light source (2, 12), wherein a measured value acquisition (7, 7.1) applied by the LED light source (2, 12) or the energisation thereof, in order to determine an actual mode of operation, in particular in relation to day or night operation, is connected to a comparator (9) to compare the actual mode of operation to a target mode of operation which is able to be predetermined by the signal box, wherein the comparison result is supplied to a cut-off switch (4) looped in in the current path of the LED driver (6).
  2. Signal transmitter according to claim 1,
    characterised in that
    the target mode of operation is able to be identified from a sum signal, which is able to be predetermined on the signal box side and contains the target mode of operation and a light generation energy or the target mode of operation and colour information or the target mode of operation, the light generation energy and the colour information, by means of a mode of operation identification (15, 15.1), wherein the mode of operation identification (15, 15.1) is connected to the LED driver (6) and the comparator (9) on the output side.
  3. Signal transmitter according to one of the preceding claims,
    characterised in that
    means for eliminating interference voltages (5) are provided in the current path of the LED driver (6).
  4. Signal transmitter according to one of the preceding claims,
    characterised in that
    a plurality of LED light sources (2, 12) of the same colour are provided, wherein either every LED light source (2, 12) is assigned a signal transmitter (1, 11) which is able to be actuated in a predetermined order of priority or a common signal transmitter (1.1, 1.2, 1.3, 1.4) has a priority circuit for the preferred actuation 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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DE102008029725A DE102008029725A1 (en) 2008-06-23 2008-06-23 signaler

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DE102011080040A1 (en) * 2011-07-28 2013-01-31 Siemens Aktiengesellschaft signaler
DE102012213774A1 (en) * 2012-08-03 2014-02-06 Siemens Aktiengesellschaft light signal
DE102012019861B4 (en) * 2012-10-10 2021-03-11 Bbr Verkehrstechnik Gmbh Method for operating a signal transmitter and signal transmitter
DE102013218998B4 (en) * 2013-09-20 2016-01-14 Siemens Aktiengesellschaft Method for setting an LED signal transmitter with regard to daytime and nighttime operation and LED signal transmitter
CN105934019B (en) * 2016-04-25 2017-09-29 成都益英光电科技有限公司 The illuminator and its detection method that can be communicated with one another

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Publication number Priority date Publication date Assignee Title
EP1274285A1 (en) * 1999-11-19 2003-01-08 Gelcore Company Method and device for remote monitoring of LED lamps
WO2007036509A1 (en) * 2005-09-27 2007-04-05 Siemens Aktiengesellschaft Method and device for monitoring the light signal from an electrooptical light element, in particular a high-current led, which is used for railway purposes, of a safe railway signal
EP1777533A1 (en) * 2005-10-21 2007-04-25 ALCATEL Transport Solution Deutschland GmbH Monitoring device for an array of electrical units
DE602005004167T2 (en) * 2005-11-18 2008-12-24 Thales Rail Signalling Solutions Gmbh Electrical circuit for LED signal lamps with a switching threshold for switching between daytime and nighttime operation

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EP2146551A3 (en) 2013-03-06
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