EP2124507A2 - Emetteur de signal pour un signal lumineux DEL - Google Patents

Emetteur de signal pour un signal lumineux DEL Download PDF

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Publication number
EP2124507A2
EP2124507A2 EP09160459A EP09160459A EP2124507A2 EP 2124507 A2 EP2124507 A2 EP 2124507A2 EP 09160459 A EP09160459 A EP 09160459A EP 09160459 A EP09160459 A EP 09160459A EP 2124507 A2 EP2124507 A2 EP 2124507A2
Authority
EP
European Patent Office
Prior art keywords
operating voltage
signal
light signal
load
characteristic
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.)
Withdrawn
Application number
EP09160459A
Other languages
German (de)
English (en)
Other versions
EP2124507A3 (fr
Inventor
Eike Berg
Stefan Burgass
Rolf Eckl
Uwe Frost
Norbert PÖPPLOW
Michael Zabel
Dirk Zimmermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2124507A2 publication Critical patent/EP2124507A2/fr
Publication of EP2124507A3 publication Critical patent/EP2124507A3/fr
Withdrawn legal-status Critical Current

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    • 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
    • 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]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • 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 for a LED light signal with a circuit part for adapting a signal generator current operating voltage characteristic of the LED light signal to a characteristic of a light bulb light signal, wherein a load in response to the operating voltage can be controlled.
  • LEDs 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 signaling technology. 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 changes to an existing monitoring device. This is particularly true for light signal circuits of the railroad, in which the proper function is usually monitored by a safe signaling by means of a signal-wise control part. In order to continue to use this monitoring device without modification, the signal generator current operating voltage characteristic of the LED light signal must be approximately matched to that of the incandescent light signal. In order to achieve interface compatibility, therefore, the additional circuit part in the signal generator is required. This circuit part allows the characteristic adjustment by the difference between the power consumption of the illuminated LEDs and the replaced light bulb is compensated by a corresponding electrical power consumption.
  • a control voltage is derived.
  • a rectifier bridge GR is connected in parallel with a control circuit 1 for a load 2, consisting of transistors T1, T2 and load resistors RL1, RL2 and current diodes D1 and D2.
  • the control circuit 1 generates from the operating voltage a control voltage which sets the average current flow through the transistors T1 and T2.
  • the characteristic curve adaptation achievable in this way is relatively inaccurate.
  • the load current, which results mainly through the transistors T1 and T2 is not sinusoidal at sinusoidal operating voltage, whereby the desired purely resistive character of the light bulb to be simulated can not be replicated exactly.
  • a pulse width modulated electronic switch 3rd according to FIG. 2 to use.
  • the circuit comprises, in addition to a power supply 4, an operating voltage measurement 5, wherein a pulse width modulation - PWM - is generated from the operating voltage by means of an algorithm 6, which activates the electronic switch 3 for energizing a load resistor 7.
  • the invention has for its object to overcome these drawbacks and to provide a signal generator of the generic type, which allows a simple way a characteristic adjustment according to needs accuracy.
  • the object is achieved in that a resistor network with electronically switchable resistors is provided as the load.
  • electronically switchable resistors in contrast to the known transistor variant and its modifications by means of PWM or MOSFET, a purely ohmic load character is generated.
  • I U / R.
  • Signal distortions in the zero crossing of the load current or harmonics do not occur.
  • the control of the resistors by means of electronic switches made possible by operating voltage-dependent connection or disconnection of resistors in a simple manner, a realization of the desired load for the characteristic adjustment.
  • the electronic switches of the resistor network can be driven by a microcontroller, depending on the operating voltage.
  • a microcontroller depending on the operating voltage.
  • the resistor network may additionally be equipped according to claim 3 with at least one normally closed contact for simulating an inrush current of the incandescent light signal.
  • the normally closed contact is preferably in the ground state, i. H. with dark signal, closed. After switching on the operating voltage, the normally closed contact is opened after a specified time. This results shortly after switching on the operating voltage for a short time an additional surge, which simulates the surge, which arises at the incandescent light signal due to its lower resistance in the cold state. Since the inrush current in the incandescent light signal depends on the magnitude of the applied voltage and on the heating of the filament, which leads to an increase in the resistance, also on the time, the accuracy of the replica by the use of multiple break contacts, the be controlled according to these initial conditions can be improved.
  • FIG. 4 shows the essential components of a characteristic adaptation according to the invention.
  • transistors - FIG. 1 - or PWM - FIG. 2 - or MOSFET - FIG. 3 - A resistor network with resistors R1, R2, R3, which are controlled by electronic switches 13.1, 13.2, 13.3, used.
  • the desired load is realized by operating voltage-dependent connection or disconnection of the resistors R1, R2, R3.
  • the circuit arrangement of the resistors R1, R2, R3, which may also have different values, is freely configurable according to the respective requirements.
  • For controlling the electronic switches 13.1, 13.2, 13.3 is preferably a microcontroller 14 or a programmable logic.
  • FIG. 5 illustrates a signal generator power operating voltage diagram in which the characteristic 15 to be emulated of a light bulb, the characteristic 16 of an LED array and the characteristic curve 17 of a matching circuit according to the principle of FIG. 4 are shown. It can be seen that a very good characteristic curve adaptation already results with only five resistance levels.
  • the frequency of the characteristic 17 can be by the freely selectable number of resistors R1 to R7 used according to FIG. 6 within the scope of the monitoring-specific tolerances.
  • the LED characteristic 16 is split into a night area ⁇ 8 V and a day area> 8 V. Especially in the night area, there is a big difference between the power consumption of the incandescent lamp and the power consumption necessary for the illumination of the LEDs.
  • the signal generator generates in this critical area suitable for external monitoring output, which comes very close to the incandescent lamp.
  • the circuit can also be used to simulate the cold resistance of the signal lamp.
  • an opener contact 18 is provided which is closed when the signal is switched off. After switching on the operating voltage of the normally closed contact 18 is opened after a specified time. The resulting additional current flow shortly after switching on reflects the additional current flow, which arises in the case of an incandescent lamp due to its lower resistance in the cold state. Since the resistance of the filament increases as a function of the heating, the inrush current of the incandescent lamp depends on the level of the applied voltage and on the time. To replicate this relationship exactly, several separately controlled break contacts 18 can be used.
  • FIGS. 6a, 6b and 6c show resistor networks of various complexity which can be combined with the cold-thread simulation of FIG. 6d.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Led Devices (AREA)
EP09160459.5A 2008-05-23 2009-05-18 Emetteur de signal pour un signal lumineux DEL Withdrawn EP2124507A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008025187A DE102008025187A1 (de) 2008-05-23 2008-05-23 Signalgeber für ein LED-Lichtsignal

Publications (2)

Publication Number Publication Date
EP2124507A2 true EP2124507A2 (fr) 2009-11-25
EP2124507A3 EP2124507A3 (fr) 2014-05-28

Family

ID=41011796

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09160459.5A Withdrawn EP2124507A3 (fr) 2008-05-23 2009-05-18 Emetteur de signal pour un signal lumineux DEL

Country Status (2)

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EP (1) EP2124507A3 (fr)
DE (1) DE102008025187A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2653365A1 (fr) * 2012-04-18 2013-10-23 Siemens Schweiz AG Signal lumineux contenant un agencement de sources lumineuses DEL en remplacement d'un agencement de lampes à incandescence
WO2014019924A2 (fr) * 2012-08-03 2014-02-06 Siemens Aktiengesellschaft Signal lumineux
EP2687418A3 (fr) * 2012-07-20 2014-05-14 Pintsch Bamag Antriebs- und Verkehrstechnik GmbH Signal de trajectoire à LED pour le transport ferroviaire et interface pour un tel signal de trajectoire à LED
EP3037713A1 (fr) * 2014-12-23 2016-06-29 DB Netz AG Dispositif d'eclairage pour une installation de signal lumineux du trafic ferroviaire
DE202016003785U1 (de) 2016-06-16 2016-07-20 Deutsche Bahn Ag Vorrichtung zum Ersetzen einer Glühlampe
DE102016007366A1 (de) 2016-06-16 2017-12-21 Deutsche Bahn Ag Glühlampenemulation
CN109884555A (zh) * 2017-12-06 2019-06-14 台达电子企业管理（上海）有限公司 一种直流集中照明系统及其灯具状态的测量方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1233654A1 (fr) 2001-01-19 2002-08-21 Siemens Aktiengesellschaft Circuit et procédé d'adaptation de la courbe caractéristique d'une diode LED
EP1232654A1 (fr) 1999-11-25 2002-08-21 Quante Ag Module de connexion cote systeme et repartiteur faisant partie de la technologie des telecommunications

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19846753A1 (de) * 1998-10-07 2000-04-13 Siemens Ag Schaltungsanordnung zum Betreiben eines Leuchtzeichens
US6764347B1 (en) * 2003-01-06 2004-07-20 Paul J. Plishner Plug and socket holder for replaceably holding diode-based light sources and other radiation sources and receivers
DE102004027351B3 (de) * 2004-06-01 2006-01-19 Siemens Ag Schaltungsanordnung zum Betreiben einers LED-Signalgebers
EP1787886B1 (fr) * 2005-11-18 2008-01-02 ALCATEL Transport Solution Deutschland GmbH Circuit électrique pour des lampes de signalisation avec diodes électroluminescentes ayant un seuil pour changer entre un mode de fonctionnement de jour et un mode de fonctionnement de nuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1232654A1 (fr) 1999-11-25 2002-08-21 Quante Ag Module de connexion cote systeme et repartiteur faisant partie de la technologie des telecommunications
EP1233654A1 (fr) 2001-01-19 2002-08-21 Siemens Aktiengesellschaft Circuit et procédé d'adaptation de la courbe caractéristique d'une diode LED

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2653365A1 (fr) * 2012-04-18 2013-10-23 Siemens Schweiz AG Signal lumineux contenant un agencement de sources lumineuses DEL en remplacement d'un agencement de lampes à incandescence
EP2687418A3 (fr) * 2012-07-20 2014-05-14 Pintsch Bamag Antriebs- und Verkehrstechnik GmbH Signal de trajectoire à LED pour le transport ferroviaire et interface pour un tel signal de trajectoire à LED
WO2014019924A2 (fr) * 2012-08-03 2014-02-06 Siemens Aktiengesellschaft Signal lumineux
WO2014019924A3 (fr) * 2012-08-03 2014-05-01 Siemens Aktiengesellschaft Signal lumineux
EP3037713A1 (fr) * 2014-12-23 2016-06-29 DB Netz AG Dispositif d'eclairage pour une installation de signal lumineux du trafic ferroviaire
DE202016003785U1 (de) 2016-06-16 2016-07-20 Deutsche Bahn Ag Vorrichtung zum Ersetzen einer Glühlampe
DE102016007366A1 (de) 2016-06-16 2017-12-21 Deutsche Bahn Ag Glühlampenemulation
DE102016007366B4 (de) * 2016-06-16 2021-05-06 Deutsche Bahn Aktiengesellschaft Glühlampenemulation
CN109884555A (zh) * 2017-12-06 2019-06-14 台达电子企业管理（上海）有限公司 一种直流集中照明系统及其灯具状态的测量方法

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Publication number Publication date
EP2124507A3 (fr) 2014-05-28
DE102008025187A1 (de) 2009-12-03

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