EP0432623B1 - Circuit de surveillance du fonctionnement de lampes à double filament dans des installations de signalisation lumineuse - Google Patents

Circuit de surveillance du fonctionnement de lampes à double filament dans des installations de signalisation lumineuse Download PDF

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Publication number
EP0432623B1
EP0432623B1 EP90123329A EP90123329A EP0432623B1 EP 0432623 B1 EP0432623 B1 EP 0432623B1 EP 90123329 A EP90123329 A EP 90123329A EP 90123329 A EP90123329 A EP 90123329A EP 0432623 B1 EP0432623 B1 EP 0432623B1
Authority
EP
European Patent Office
Prior art keywords
filament
circuit according
optical coupler
switch
main filament
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.)
Expired - Lifetime
Application number
EP90123329A
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German (de)
English (en)
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EP0432623A1 (fr
Inventor
Hellmuth Fricke
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
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0432623A1 publication Critical patent/EP0432623A1/fr
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Publication of EP0432623B1 publication Critical patent/EP0432623B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/10—Circuits providing for substitution of the light source in case of its failure

Definitions

  • the invention relates to a circuit according to the preamble of claim 1.
  • Such a circuit is known from DE-PS 11 81 792.
  • a monitoring circuit for main and secondary threads of incandescent lamps, in particular signal lamps, is described there, in which, when the main thread is switched on, its operational behavior and, at the same time, a voltage indicator monitor the readiness for switch-on of the associated secondary thread by means of a current indicator.
  • Two monitoring messages are generated for each signal lamp, one for the main thread and one for the secondary thread; the two monitoring messages are transmitted to a preferably remote evaluation device and evaluated there individually or they are summarized and evaluated together.
  • the object of the invention is to provide a circuit according to the preamble of claim 1, which enables the identification of the respective operating state of a signal lamp and the readiness to switch on its secondary thread when the main thread is switched on by means of a single monitoring message via a single transmission channel to a remote monitoring point.
  • FIG. 1 shows a signal lamp L which, if required, can be switched on when voltage is applied to the primary winding of a lamp transformer T1.
  • the signal lamp L has a main thread HF and a secondary thread NF connected in parallel with it.
  • the main thread HF usually lights up; the secondary thread NF is switched off and only takes over its function if the main thread fails.
  • a current indicator JH is connected in series with the main thread HF, which serves to switch on the secondary thread if the main thread is defective. As long as a lamp current flows over the main thread, the secondary thread circuit is separated via the normally closed contact JH / 1 of the main thread monitor.
  • the signal lamp is switched on, current flows briefly over both lamp threads until the current indicator JH responds.
  • a current-sensitive detector M connected in series with the secondary thread NF of the signal lamp is connected in parallel with the normally closed contact JH / 1 of the current indicator JH lying in series with the main thread HF.
  • This detector is used to output a fault message to a remote evaluation device (not shown) in the event that the supply circuit leading via the main thread HF is switched off when the signal lamp is switched on or the monitoring circuit of the signal lamp is broken via the secondary thread NF when the main thread is intact.
  • the detector M transmits a monitoring message, which characterizes the respective operating state of the signal lamp monitored by it, to the remote evaluation device via a contact M / 1.
  • the detector M is excited and sends a message to the evaluation device which indicates the correct operating state of the signal lamp.
  • the detector M is so high-impedance or the detection circuit is so high-impedance that the signaling current flowing through the secondary thread NF not yet warmed the secondary thread. This prevents the secondary thread from being electrically loaded when the main thread is still intact.
  • the current indicator JH drops and closes its normally closed contact JH / 1 in the feed circuit of the secondary thread.
  • the secondary thread is automatically switched on and takes over the tasks of the defective main thread of the signal lamp.
  • the detector M is short-circuited via the closed normally closed contact JH / 1 of the dropped current indicator JH.
  • the detector M drops and reports via its contact M / 1 to the remote evaluation device that a fault has occurred on the signal lamp L, which necessitates the use of the fault or maintenance service.
  • a fault message can also be triggered when the feed circuit leading over the main thread has become so high-resistance that the main thread no longer lights up at full brightness.
  • the monitoring circuit leading over the secondary thread and the detector is interrupted while the signal lamp is switched on and the main thread is intact, there is no longer any redundancy for the main thread. This should also be reported to the malfunction and maintenance personnel as early as possible so that the malfunction that has occurred can, if possible, be remedied before a malfunction occurs in the main thread circle. If the monitoring circuit led over the secondary thread and the detector is opened, the detector M reacts to it in the same way as if the current indicator JH had indicated a fault in the main thread circuit of the signal lamp, i.e. it drops out and reports this fault via its contact M / 1 to the remote evaluation point.
  • FIG 2 shows an embodiment of the circuit according to the invention with only electronic switching means for monitoring the operating state of a signal lamp L.
  • the supply circuits of the two lamp filaments of the signal lamp are drawn out thick as in Figure 1, while the switching means of the actual monitoring circuit by thin lines together are connected.
  • the signal lamp is in turn supplied via a lamp transformer T1, to the primary winding of which an alternating supply voltage can be connected if necessary.
  • the monitoring circuit is supplied with power from a rectifier G which is connected on the input side to the secondary winding of the lamp transformer T1.
  • the current indicator JH which is in series with the main thread HF of the signal lamp L, is formed from an optocoupler U1 coupled to the main thread feed circuit via a current transformer T2 and having input diodes connected in anti-parallel.
  • the switching transistor of the optocoupler U1 is switched to a low resistance and controls a downstream electronic switch S1 designed as a field effect transistor.
  • This switch short-circuits the transmission diode of an optoelectronically controlled AC switch U2, which is used to control a triac TR.
  • This triac has the function of the switching contact JH / 1 shown in FIG. 1.
  • Main thread monitor JH, switch S1, AC switch U2 and triac TR together form a main / auxiliary thread switch HNU1.
  • the triac TR has a high resistance and interrupts the feed circuit for the secondary thread NF.
  • the transmission diodes of a further optocoupler U3 are connected in parallel with the triac TR via a series resistor R.
  • the switching transistor of this optocoupler has a low resistance when the secondary thread feed circuit is opened.
  • the control potential then present at the gate of a further electronic switch S2 designed as a field effect transistor has the effect that the source-drain path of this switch has a low resistance.
  • the transmission diode of another optocoupler U4 is short-circuited; the associated switching transistor has a high impedance for sending a message to the remote evaluation device which indicates the correct operating state of the monitored signal lamp.
  • the switching transistor of the optocoupler U1 becomes high-resistance and the electronic switch S1 arranged downstream of it is blocked.
  • the Transmitting diode of the AC switch U2 is then no longer short-circuited; it is energized and causes the internal AC switch to switch; this results in the control of the triac, via which the auxiliary thread of the signal lamp is switched on.
  • the triac TR briefly switches the input diodes of the optocoupler U3, so that the switching path of the associated switching transistor becomes high-resistance.
  • the control potential present at the gate of the electronic switch S2 changes, as a result of which the source-drain path of this switch becomes high-resistance.
  • the short circuit for the input diode of the optocoupler U4 is eliminated, so that the optocoupler responds and outputs a fault message for the monitored signal lamp via its switching transistor.
  • a corresponding fault message is also triggered if the secondary thread circuit of the signal lamp is interrupted while the intact main thread is switched on.
  • the transmission diodes of the optocoupler U3 are also de-energized, so that the associated switching transistor becomes high-resistance and the positive control potential is separated from the gate of the electronic switch S2.
  • the switch S2 becomes high-resistance and the optocoupler U4 can respond.
  • the optocoupler U1 used as a current indicator does not necessarily have to be connected to the secondary winding of a current transformer; it can also be connected in parallel to a burden lying in the main thread circle.
  • a main thread monitor designed as a relay or optocoupler any other known monitor, in particular also voltage-controlled monitors, can be used. An embodiment of this is shown in Fig. 3; the designations introduced in FIG. 2 are retained for corresponding components.
  • the main / secondary thread switch HNU2 shown in FIG. 3 differs essentially from that of FIG. 2 in that the indicator lying in series with the main thread of the signal lamp L does not show the feed current flowing over the main thread the signal lamp, but an independent current that can only flow when the main thread is intact.
  • the optocoupler U1 used as an indicator is fed on the input side via the main thread HF of the signal lamp from the lamp transformer T1.
  • the current-carrying state that is to say with the main thread intact, it switches through an AC switch TRM designed as a triac in the supply circuit of the main thread of the signal lamp and thus causes the signal lamp L to be switched on via its main thread.
  • the switching distance of the AC switch TRH becomes high-resistance because the holding current of the AC switch is undercut.
  • the sequence of effects of the other switching means of the main / secondary thread switch HNU2 corresponds to that of the main / secondary thread switch HNU1 in FIG Signal lamp signals.
  • a corresponding optocoupler in series with the switching path of the electronic switch S1 or in series with the switching path of the switching transistor of the first optocoupler U1 could serve to identify the switched main thread HF of the signal lamp.
  • the detector M is activated to output a fault message and that the monitored signal lamp is to be switched off when the operating state is operating properly.
  • the switching transistor of the optocoupler U1 can also short-circuit the transmitting diode of the optoelectronically controllable AC switch U2 directly or the supply circuit thereof cut open. Because of the ripple of the voltage supplied to the transmitter diodes of the optocoupler U1, a very low pulsating DC voltage will be able to be tapped at the switching path of the optocoupler switching transistor. In order to prevent the optoelectronically controllable AC switch U2 from turning on as a result of this DC voltage, a capacitor for smoothing this voltage must be connected in parallel with the switching path of the optocoupler switching transistor.
  • a zener diode is to be connected in series with the transmitter diode of the optoelectronically controllable AC switch U2, the zener voltage of which is at least equal to the voltage across the capacitor when the optocoupler switching transistor is controlled.
  • This Zener voltage is added to the forward voltage of the transmitter diode of the optoelectronically controllable AC switch and prevents the control of this switch when the main thread is illuminated.
  • This optocoupler can also be controlled directly by the switching transistor of the optocoupler U3 by short-circuiting the transmitting diode of the optocoupler U4 as required or opening its supply circuit.
  • special precautions must be taken to render the residual voltage applied to the switching path of the optocoupler U3 when the switching transistor is turned on ineffective.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Claims (18)

  1. Circuit de contrôle du fonctionnement d'une lampe à double filament dans un signal lumineux, notamment dans un signal lumineux de chemin de fer, comportant un filament principal et un filament auxiliaire branché en parallèle du filament principal, parmi lesquels, dans le cas d'une lampe à signal branchée, habituellement seul le filament principal éclaire, alors que le filament auxiliaire reste sombre, et pour lesquels, dans le cas où le filament principal associé a brûlé, le filament auxiliaire prend en charge automatiquement cette fonction, en utilisant un indicateur qui contrôle le filament principal et qui, lorsqu'un courant de lampe passe par le filament principal, supprime le branchement du filament auxiliaire associé, et comportant un indicateur supplémentaire pour le contrôle du fonctionnement du filament auxiliaire, dans le cas où le filament principal branché est intact,
    caractérisé en ce que
    un indicateur de courant (M) est branché en série avec le filament auxiliaire (NF) de la lampe à signal (L), pour déclencher une signalisation de contrôle, et que le contrôleur du filament principal (JH) court-circuite cet indicateur de courant (M), à l'aide de moyens de commutation qu'il commande (JH/1), dans le cas où un courant de lampe trop faible passe dans le filament principal.
  2. Circuit suivant la revendication 1, caractérisé en ce que le circuit d'alimentation du filament auxiliaire, qui est branché par l'intermédiaire de l'indicateur de courant (L) du filament auxiliaire (NF), est à forte valeur ohmique de telle sorte que le filament auxiliaire n'éclaire pas encore.
  3. Circuit suivant la revendication 1 et/ou 2, caractérisé en ce que les indicateurs (JH et/ou M) sont constitués en relais.
  4. Circuit suivant la revendication 1 et/ou 2, caractérisé en ce que les indicateurs (JH et/ou M) sont constitués en optocoupleurs (U1, U3).
  5. Circuit suivant la revendication 4, caractérisé en ce que les optocoupleurs (U1, U3) comportent des diodes d'émission branchées de manière antiparallèle.
  6. Circuit suivant la revendication 4 ou 5, caractérisé en ce que l'optocoupleur (U3) branché en série avec le filament auxiliaire (NF) est branché, par sa diode d'émission, en parallèle avec les moyens de commutation (TR) commandés par le contrôleur du filament principal (JH), et que le transistor de commutation de cet optocoupleur (U3) court-circuite, dans le cas où la diode d'émission est parcourue par un courant, directement ou indirectement, la diode d'émission d'un autre optocoupleur (U4), dont le transistor de commutation fournit la signalisation de contrôle, sépare le circuit d'alimentation de cet optocoupleur (U4), met fin au court-circuit ou branche le circuit d'alimentation.
  7. Circuit suivant la revendication 6, caractérisé en ce que le transistor de commutation de l'optocoupleur (U3) branché en série avec le filament auxiliair règle, à l'état réglé, un commutateur électronique (S2) pour le branchement de l'autre optocoupleur (U4).
  8. Circuit suivant la revendication 4 ou 5, caractérisé en ce que l'optocoupleur (U1) du contrôleur du filament principal (IH) est relié, côté entrée, à l'enroulement secondaire d'un transducteur de courant (T1) branché, côté primaire, dans la voie de courant du filament principal.
  9. Circuit suivant la revendication 4 ou 5, caractérisé en ce que l'optocoupleur du contrôleur du filament principal est branché en parallèle, côté entrée, avec une charge branchée dans la voie de courant du filament principal.
  10. Circuit suivant la revendication 4 ou 5, caractérisé en ce qu'un commutateur de courant alternatif (TRH) électronique est monté dans le circuit de lampe du filament principal (HF) et que l'optocoupleur (U1) du contrôleur du filament principal (JH) est alimenté, côté entrée, par l'intermédiaire du filament principal de la lampe à signal (L), à partir du dispositif d'alimentation en courant (T1) de la lampe à signal et connecte, dans l'état de courant passant, le commutateur de courant alternatif (TRH) du filament principal.
  11. Circuit suivant la revendication 6 ou 7, caractérisé en ce que les transistors de commutation des optocoupleurs (U1, U3) sont placés à une tension continue fournie par la tension de la lampe à signal.
  12. Circuit suivant les revendications 4 ou 5, 6, 8 ou 9, caractérisé en ce que les moyens de commutation commandés par le contrôleur du filament principal (JH) sont constitués en commutateur de courant alternatif (TR) électronique, qui est susceptible d'être commandé directement ou indirectement par l'optocoupleur (U1) du contrôleur du filament principal.
  13. Circuit suivant la revendication 12, caractérisé en ce que le commutateur de courant alternatif (TR) électronique et branché en série avec le filament auxiliaire est constitué en triac, qui est susceptible d'être commandé par un commutateur de courant alternatif (U2) commandable de manière optoélectronique et branché en parallèle au commutateur de courant alternatif électronique (TR) par l'intermédiaire de résistances.
  14. Circuit suivant la revendication 13, caractérisé en ce que le transistor de commutation de l'optocoupleur (U1) utilisé en tant que contrôleur du filament principal, règle, à l'état réglé, un commutateur électronique (S1) pour court-circuiter la diode d'émission ou les diodes d'émission du commutateur de courant alternatif (U2) commandable optoélectriquement.
  15. Circuit suivant la revendication 6 et/ou 13, caractérisé en ce qu'un condensateur est branché en parallèle avec la section de commutation du transistor de commutation de l'optocoupleur.
  16. Circuit suivant la revendication 6 et/ou 13 ou 15, caractérisé en ce qu'en série avec l'une au moins des diodes d'émission du commutateur de courant alternatif (U2) commandable optoélectroniquement, est branchée une diode Zener, dont la tension de fonctionnement est au moins égale à la tension qui s'établit aux bornes de la section de commutation du transistor de commutation de l'optocoupleur réglé ou aux bornes du condensateur.
  17. Circuit suivant la revendication 7 et/ou 14, caractérisé en ce que le commutateur électronique (S1, S2) est constitué en transistor à effet de champ.
  18. Circuit suivant l'une des revendications 1 et 17, caractérisé en ce qu'en série avec la diode d'émission du commutateur de courant alternatif (U2) commandable optoélectriquement, avec la section de commutation du commutateur électronique (S1), ou avec la section de commutation du premier transistor de commutation de l'optocoupleur, est branchée la diode d'émission d'un autre optocoupleur (U5), dont le transistor de commutation sert à déclencher une signalisation de contrôle.
EP90123329A 1989-12-14 1990-12-05 Circuit de surveillance du fonctionnement de lampes à double filament dans des installations de signalisation lumineuse Expired - Lifetime EP0432623B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3941327 1989-12-14
DE3941327A DE3941327A1 (de) 1989-12-14 1989-12-14 Schaltung zur funktionsueberwachung von doppelfadenlampen in lichtsignalen

Publications (2)

Publication Number Publication Date
EP0432623A1 EP0432623A1 (fr) 1991-06-19
EP0432623B1 true EP0432623B1 (fr) 1994-06-15

Family

ID=6395469

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90123329A Expired - Lifetime EP0432623B1 (fr) 1989-12-14 1990-12-05 Circuit de surveillance du fonctionnement de lampes à double filament dans des installations de signalisation lumineuse

Country Status (6)

Country Link
EP (1) EP0432623B1 (fr)
AT (1) ATE107462T1 (fr)
DE (2) DE3941327A1 (fr)
DK (1) DK0432623T3 (fr)
ES (1) ES2056351T3 (fr)
FI (1) FI97675C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19948718A1 (de) * 1999-09-30 2001-05-03 Siemens Ag Verfahren zum Betreiben eines LED-Leuchtzeichens aus einer Lichtsignalschaltung für Signallampen sowie dafür geeignete Schaltung

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112201537B (zh) * 2020-10-12 2023-10-03 天津理工大学 一种交流灯丝转换继电器及其可靠性的在线监测方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1181792B (de) * 1963-06-29 1964-11-19 Pintsch Bamag Ag UEberwachungsschaltung fuer Haupt- und Nebenfaeden von Gluehlampen, insbesondere Signallampen
DE1566901A1 (de) * 1967-03-21 1970-04-30 Licentia Gmbh Anordnung zur UEberwachung von Signallampen auf Fadenbruch
NL178634C (nl) * 1978-01-02 1986-04-16 Philips Nv Inrichting voor het detecteren van ongewenste signaalcombinaties van twee signaallampen bij verkeerslichten.
US4380718A (en) * 1981-05-22 1983-04-19 Kelsey-Hayes Co. Trailer marker light substitution circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19948718A1 (de) * 1999-09-30 2001-05-03 Siemens Ag Verfahren zum Betreiben eines LED-Leuchtzeichens aus einer Lichtsignalschaltung für Signallampen sowie dafür geeignete Schaltung
DE19948718C2 (de) * 1999-09-30 2003-02-27 Siemens Ag Schaltung zum Betreiben eines Leuchtzeichens aus einer Lichtsignalschaltung für Signallampen

Also Published As

Publication number Publication date
FI97675C (fi) 1997-01-27
DK0432623T3 (da) 1994-10-24
FI97675B (fi) 1996-10-15
DE3941327A1 (de) 1991-06-20
DE59006141D1 (de) 1994-07-21
EP0432623A1 (fr) 1991-06-19
ATE107462T1 (de) 1994-07-15
ES2056351T3 (es) 1994-10-01
FI906151A (fi) 1991-06-15
FI906151A0 (fi) 1990-12-13

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