EP0500201A1 - Circuit for monitoring alternating current supplied signal lamps - Google Patents
Circuit for monitoring alternating current supplied signal lamps Download PDFInfo
- Publication number
- EP0500201A1 EP0500201A1 EP92250035A EP92250035A EP0500201A1 EP 0500201 A1 EP0500201 A1 EP 0500201A1 EP 92250035 A EP92250035 A EP 92250035A EP 92250035 A EP92250035 A EP 92250035A EP 0500201 A1 EP0500201 A1 EP 0500201A1
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- Prior art keywords
- signal
- circuit
- monitoring
- lamp
- signal lamp
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 27
- 230000011664 signaling Effects 0.000 claims abstract description 9
- 230000007717 exclusion Effects 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011990 functional testing Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/097—Supervising of traffic control systems, e.g. by giving an alarm if two crossing streets have green light simultaneously
-
- 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
Definitions
- the invention relates to a circuit according to the preamble of claim 1.
- a circuit is known from DE-PS 35 16 612.
- the DC indicators serve to identify the signal term present in each case and to identify the effective lamp filament of an activated signal lamp.
- the different signaling states are differentiated by evaluating the polarity of DC voltages; the DC voltage detected in each case is switched in the vicinity of the lamp via differently polarized diodes and exclusion contacts from signaling devices to the feed lines to the signal lamps and is coupled out at a remote monitoring point via DC indicators.
- Light signal circuits are also known in which the respective secondary thread of a signal lamp is checked for functionality. This is the case, for example, with the circuit known from DE-PS 35 15 962. There, the auxiliary thread of the signal lamp is also briefly switched on each time a signal lamp is switched on and when the signal lamp is switched on. If the secondary thread is live, a feedback to a Monitoring point given, which then causes the shutdown of the previously switched on thread. In this known circuit there is no constant monitoring of the secondary thread for functionality. In addition, the individual connection of the secondary threads for testing purposes and the feedback of the corresponding reporting status to an evaluation point requires a relatively high amount of hardware only for the functional test of the secondary threads on the individual signal lamps.
- a circuit for function monitoring of double-filament lamps in light signals is known from German utility model 90 12 641, in which the secondary thread of a signal lamp is continuously monitored when the main thread is switched on. If the monitoring circuit guided over the secondary thread is interrupted for any reason, this is indicated to a central monitoring point. This is done with the help of a separate current indicator in the circuit of the monitored lamp filaments.
- the object of the invention is to provide a circuit according to the preamble of claim 1, which enables continuous function monitoring of a replacement thread for the duration of the connection of a lamp without the need for an additional current indicator or other signaling device in the monitoring circuit of the replacement thread in question.
- the drawing shows a signal lamp L of a multi-term light signal, not shown, which from a remote control point via isolating transformers T1 and T2 is operated with AC voltage. This AC voltage is constantly present;
- the signal lamp L is switched on and off by contacts FU1 / 1 and FU2 / 1 of lamp monitors which are assigned to other signal lamps of the light signal. If the signal lamp L shown is, for example, a signal lamp provided for switching on the stop term, then the contacts FU1 / 1 and FU2 / 1 are contacts of the lamp monitor assigned to, for example, two travel signal lamps of the light signal.
- the supply voltage for the driving signal lamps is not continuously switched through to the signal lamps; if necessary, it is created by switching contacts.
- a DC monitoring circuit which leads via the feed lines leading to the signal lamp, the two lamp threads of the signal lamp connected in series and at least one DC indicator.
- the DC monitoring voltage is derived from the constant supply AC voltage via diodes D1 and D2 connected in opposite polarity and upstream exclusion contacts W / 2 and W / 3. As long as a sufficiently high alternating current flows over the main thread H of the connected signal lamp L, the alternating current indicator W is excited.
- the contact W / 2 in series with the diode D1 is closed and a monitoring current circuit is formed via this diode, the secondary thread N of the signal lamp, then division of the path via main thread H of the signal lamp, primary winding of a current transformer feeding the AC indicator W and the transformer T2, the DC indicator G1 and the feed lines S of the signal lamp.
- the DC indicator G1 indicates when set the presence of the correct operating state of the signal lamp L.
- the main thread is monitored by the AC indicator W.
- Resistors R prevent the DC monitoring current from energizing the secondary thread of the signal lamp which is not switched on beyond its glow limit.
- the AC indicator W drops, for example, when the main thread of the signal lamp burns out, it opens its contact W / 2 and closes its contacts W / 1 and W / 3.
- a DC monitoring current now flows via the diode D2, the contact W / 1, the DC indicator G2 and the feed lines of the signal lamp.
- the response of the DC indicator G2 indicates the fault that has occurred.
- exclusion contacts W / 2 and W / 3 of the AC indicator assigned to the signal lamp in the monitoring circuit of a signal lamp can also be used to switch the DC indicators on and off as required, for example switches which indicate whether the signal lamp is switched on of the light signal, e.g. a driving signal lamp, the main or the secondary thread is effective.
- the monitoring of the signal concept that is switched on is carried out by means of direct current indicators, not shown in the drawing, which are assigned to the travel signal lamps of the light signal and can be connected via meshing between the feed lines of the individual signal lamps.
- the invention shows a way to check the auxiliary thread of the signal lamp for operational readiness in addition to the main thread of a signal lamp that is currently switched on, or to monitor both the main and the in the notification process Incorporation of a signal lamp. Any errors that would have a detrimental effect on operation or endanger the operation only in the event of a malfunction when the main thread of a signal lamp burns out, are thus recognized at an early stage so that there is the possibility of timely rectification of the malfunction before the moment of danger occurs.
- the invention can also be used for monitoring signal lamps without double-filament lamps. There, a replacement lamp takes over the function of the secondary thread according to the exemplary embodiment explained above.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Schaltung nach dem Oberbegriff des Patentanspruches 1. Eine derartige Schaltung ist aus der DE-PS 35 16 612 bekannt.The invention relates to a circuit according to the preamble of
Bei dieser bekannten Schaltung dienen die Gleichstromindikatoren zur Kennzeichnung des jeweils vorhandenen Signalbegriffes und zur Kennzeichnung des jeweils wirksamen Lampenfadens einer angeschalteten Signallampe. Die Unterscheidung der verschiedenen Meldezustände geschieht durch Bewerten der Polarität von Gleichspannungen; die jeweils detektierte Gleichspannung wird in Lampennähe über unterschiedlich gepolte Dioden und Ausschlußkontakte von Meldeorganen auf die Speiseleitungen zu den Signallampen geschaltet und an einer fernen Überwachungsstelle über Gleichstromindikatoren ausgekoppelt.In this known circuit, the DC indicators serve to identify the signal term present in each case and to identify the effective lamp filament of an activated signal lamp. The different signaling states are differentiated by evaluating the polarity of DC voltages; the DC voltage detected in each case is switched in the vicinity of the lamp via differently polarized diodes and exclusion contacts from signaling devices to the feed lines to the signal lamps and is coupled out at a remote monitoring point via DC indicators.
In der Nähe der Signallampen befindet sich ein Lampenüberwacher, der den über den Hauptfaden der jeweiligen Signallampe fließenden Speisestrom detektiert und bei ausreichend hohem Speisestrom einen dem Hauptfaden zu Reservezwecken parallelgeschalteten Nebenfaden von der Versorgungsspannung abtrennt. Beim Durchbrennen des Hauptfadens wird automatisch der Nebenfaden der Signallampe wirksam geschaltet. Bei dieser bekannten Schaltung geht man davon aus, daß der Nebenfaden einer Signallampe stets funktionsfähig ist und im Störungsfall die Aufgabe des dann ausgefallenen Hauptfadens übernehmen kann.In the vicinity of the signal lamps there is a lamp monitor which detects the feed current flowing over the main thread of the respective signal lamp and, if the feed current is sufficiently high, disconnects a secondary thread connected in parallel with the main thread for reserve purposes from the supply voltage. When the main thread burns through, the auxiliary thread of the signal lamp is automatically activated. In this known circuit it is assumed that the secondary thread of a signal lamp is always functional and can take over the task of the failed main thread in the event of a fault.
Es sind auch Lichtsignalschaltungen bekannt, bei denen der jeweiligen Nebenfaden einer Signallampe auf Funktionsfähigkeit überprüft wird. Dies ist z.B. bei der aus der DE-PS 35 15 962 bekannten Schaltung der Fall. Dort wird bei jedem Anschalten einer Signallampe sowie bei angeschalteter Signallampe jeweils kurzzeitig auch der Nebenfaden der Signallampe angeschaltet. Ist der Nebenfaden stromführend, wird eine Rückmeldung an eine Überwachungsstelle gegeben, die daraufhin die Abschaltung des zuvor angeschalteten Nebenfadens veranlaßt. Bei dieser bekannten Schaltung ist keine ständige Überwachung des Nebenfadens auf Funktionsfähigkeit gegeben. Außerdem erfordert die individuelle Anschaltung der Nebenfäden zu Prüfzwecken und die Rückmeldung der entsprechenden Meldezustände an eine Auswertestelle einen relativ hohen Hardware-Aufwand ausschließlich für die Funktionsprüfung der Nebenfäden an den einzelnen Signallampen.Light signal circuits are also known in which the respective secondary thread of a signal lamp is checked for functionality. This is the case, for example, with the circuit known from DE-PS 35 15 962. There, the auxiliary thread of the signal lamp is also briefly switched on each time a signal lamp is switched on and when the signal lamp is switched on. If the secondary thread is live, a feedback to a Monitoring point given, which then causes the shutdown of the previously switched on thread. In this known circuit there is no constant monitoring of the secondary thread for functionality. In addition, the individual connection of the secondary threads for testing purposes and the feedback of the corresponding reporting status to an evaluation point requires a relatively high amount of hardware only for the functional test of the secondary threads on the individual signal lamps.
Aus dem deutschen Gebrauchsmuster 90 12 641 ist eine Schaltung zur Funktionsüberwachung von Doppelfadenlampen in Lichtsignalen bekannt, bei der der Nebenfaden einer Signallampe bei angeschaltetem Hauptfaden ständig überwacht ist. Ist der über den Nebenfaden geführte Überwachungsstromkreis aus irgendeinem Grunde unterbrochen, so wird dies einer zentralen Überwachungsstelle angezeigt. Dies geschieht unter Zuhilfenahme eines gesonderten Stromindikators im Stromkreis der überwachten Lampennebenfäden.A circuit for function monitoring of double-filament lamps in light signals is known from German utility model 90 12 641, in which the secondary thread of a signal lamp is continuously monitored when the main thread is switched on. If the monitoring circuit guided over the secondary thread is interrupted for any reason, this is indicated to a central monitoring point. This is done with the help of a separate current indicator in the circuit of the monitored lamp filaments.
Aufgabe der Erfindung ist es, eine Schaltung nach dem Oberbegriff des Patentanspruches 1 anzugeben, die eine ständige Funktionsüberwachung eines Ersatzfadens für die Dauer der Anschaltung einer Lampe ermöglicht, ohne daß es eines zusätzlichen Stromindikators oder einer sonstigen Meldeeinrichtung im Überwachungskreis des betreffenden Ersatzfadens bedarf.The object of the invention is to provide a circuit according to the preamble of
Die Erfindung löst diese Aufgabe durch die kennzeichnenden Merkmale des Patentanspruches 1. Vorteilhafte Ausgestaltungen der erfindungsgemäßen Schaltung sind in den Unteransprüchen angegeben.The invention solves this problem by the characterizing features of
Ein Ausführungsbeispiel der Erfindung ist nachstehend anhand der Zeichnung näher erläutert.An embodiment of the invention is explained below with reference to the drawing.
Die Zeichnung zeigt eine Signallampe L eines nicht weiter dargestellten mehrbegriffigen Lichtsignales, die von einer entfernten Steuerstelle aus über Trenntransformatoren T1 und T2 mit Wechselspannung betrieben wird. Diese Wechselspannung liegt ständig an; das An-und Abschalten der Signallampe L geschieht durch Kontakte FU1/1 und FU2/1 von Lampenüberwachern, die anderen Signallampen des Lichtsignals zugeordnet sind. Wenn es sich bei der dargestellten Signallampe L beispielsweise um eine zum Anschalten des Haltbegriffes vorgesehene Signallampe handelt, so sind die Kontakte FU1/1 und FU2/1 Kontakte der den beispielsweise zwei Fahrtsignallampen des Lichtsignales zugeordneten Lampenüberwacher. Die Versorgungsspannung für die Fahrtsignallampen ist nicht ständig bis zu den Signallampen durchgeschaltet; sie wird bedarfsweise durch Anschaltkontakte angelegt.The drawing shows a signal lamp L of a multi-term light signal, not shown, which from a remote control point via isolating transformers T1 and T2 is operated with AC voltage. This AC voltage is constantly present; The signal lamp L is switched on and off by contacts FU1 / 1 and FU2 / 1 of lamp monitors which are assigned to other signal lamps of the light signal. If the signal lamp L shown is, for example, a signal lamp provided for switching on the stop term, then the contacts FU1 / 1 and FU2 / 1 are contacts of the lamp monitor assigned to, for example, two travel signal lamps of the light signal. The supply voltage for the driving signal lamps is not continuously switched through to the signal lamps; if necessary, it is created by switching contacts.
In der Nähe der Signallampe L befindet sich ein Wechselstromindikator W, der den über den Hauptfaden H der Signallampe fließenden Speisewechselstrom detektiert und bei ausreichend hohem Speisewechselstrom mit seinem Kontakt W/1 den Nebenfaden N der Signallampe abschaltet.In the vicinity of the signal lamp L there is an AC indicator W which detects the feed alternating current flowing via the main filament H of the signal lamp and switches off the secondary filament N of the signal lamp with its contact W / 1 when the feed alternating current is sufficiently high.
Zum Überwachen des ordnungsgerechten Betriebsverhaltens der Signallampe und zum gleichzeitigen Überwachen der Funktionsfähigkeit des nicht angeschalteten Nebenfadens dient ein Gleichstromüberwachungskreis, der über die zur Signallampe führenden Speiseleitungen, die beiden in Reihe geschalteten Lampenfäden der Signallampe und mindestens einen Gleichstromindikator führt. Die Überwachungsgleichspannung wird dabei aus der ständig anliegenden Versorgungswechselspannung über gegenpolig geschaltete Dioden D1 und D2 und vorgeschaltete Ausschlußkontakte W/2 und W/3 abgeleitet. Solange ein ausreichend hoher Speisewechselstrom über den Hauptfaden H der angeschalteten Signallampe L fließt, ist der Wechselstromindikator W erregt. Dabei ist z.B. der mit der Diode D1 in Reihe liegende Kontakt W/2 geschlossen und es bildet sich ein Überwachungsstromkeis über diese Diode, den Nebenfaden N der Signallampe, danach Aufteilung des Weges über Hauptfaden H der Signallampe, Primärwicklung eines den Wechselstromindikator W speisenden Stromwandlers und den Transformator T2, den Gleichstromindikator G1 und die Speiseleitungen S der Signallampe aus. Der Gleichstromindikator G1 kennzeichnet in eingestelltem Zustand das Vorhandensein des ordnungsgerechten Betriebszustandes der Signallampe L. Der Hauptfaden wird durch den Wechselstromindikator W überwacht. Widerstände R verhindern, daß der Überwachungsgleichstrom den nicht angeschalteten Nebenfaden der Signallampe bis über seine Glühgrenze erregt.To monitor the correct operating behavior of the signal lamp and at the same time to monitor the functionality of the secondary thread that is not switched on, a DC monitoring circuit is used which leads via the feed lines leading to the signal lamp, the two lamp threads of the signal lamp connected in series and at least one DC indicator. The DC monitoring voltage is derived from the constant supply AC voltage via diodes D1 and D2 connected in opposite polarity and upstream exclusion contacts W / 2 and W / 3. As long as a sufficiently high alternating current flows over the main thread H of the connected signal lamp L, the alternating current indicator W is excited. For example, the contact W / 2 in series with the diode D1 is closed and a monitoring current circuit is formed via this diode, the secondary thread N of the signal lamp, then division of the path via main thread H of the signal lamp, primary winding of a current transformer feeding the AC indicator W and the transformer T2, the DC indicator G1 and the feed lines S of the signal lamp. The DC indicator G1 indicates when set the presence of the correct operating state of the signal lamp L. The main thread is monitored by the AC indicator W. Resistors R prevent the DC monitoring current from energizing the secondary thread of the signal lamp which is not switched on beyond its glow limit.
Fällt der Wechselstromindikator W beispielsweise beim Durchbrennen des Hauptfadens der Signallampe ab, so öffnet er seinen Kontakt W/2 und schließt seine Kontakte W/1 und W/3. Jetzt fließt ein Überwachungsgleichstrom über die Diode D2, den Kontakt W/1, den Gleichstromindikator G2 und die Speiseleitungen der Signallampe. Das Ansprechen des Gleichstromindikators G2 kennzeichnet die eingetretene Störung.If the AC indicator W drops, for example, when the main thread of the signal lamp burns out, it opens its contact W / 2 and closes its contacts W / 1 and W / 3. A DC monitoring current now flows via the diode D2, the contact W / 1, the DC indicator G2 and the feed lines of the signal lamp. The response of the DC indicator G2 indicates the fault that has occurred.
Anstelle von Ausschlußkontakten W/2 und W/3 des der Signallampe zugeordneten Wechselstromindikators im Überwachungsstromkreis einer Signallampe können dort auch durch andere Ereignisse gesteuerte Ausschlußkontakte zum bedarfsweisen An- und Abschalten der Gleichstromindikatoren verwendet sein, beispielsweise Schalter, die anzeigen, ob bei der jeweils angeschalteten Signallampe des Lichtsignales, z.B. einer Fahrtsignallampe, der Haupt- oder der Nebenfaden wirksam ist. Für diesen Fall erfolgt die Überwachung des jeweils angeschalteten Signalbegriffes über in der Zeichnung nicht dargestellte Gleichstromindikatoren, die den Fahrtsignallampen des Lichtsignales zugeordnet sind und über Vermaschungen zwischen den Speiseleitungen der einzelnen Signallampen anschaltbar sind.Instead of exclusion contacts W / 2 and W / 3 of the AC indicator assigned to the signal lamp in the monitoring circuit of a signal lamp, exclusion contacts controlled by other events can also be used to switch the DC indicators on and off as required, for example switches which indicate whether the signal lamp is switched on of the light signal, e.g. a driving signal lamp, the main or the secondary thread is effective. In this case, the monitoring of the signal concept that is switched on is carried out by means of direct current indicators, not shown in the drawing, which are assigned to the travel signal lamps of the light signal and can be connected via meshing between the feed lines of the individual signal lamps.
Unabhängig davon, durch wen die Anzeige der jeweils überwachten Signallampe erfolgt, zeigt die Erfindung einen Weg, um ohne Mehraufwand zusätzlich zum jeweils angeschalteten Hauptfaden einer Signallampe auch deren Nebenfaden auf Funktionsbereitschaft zu überprüfen bzw. in den Meldevorgang sowohl die Überwachung des Haupt- als auch des Nebenfadens einer Signallampe einzubeziehen. Etwaige Fehler, die sich betriebshemmend oder betriebsgefährdend erst im Störungsfall beim Durchbrennen des Hauptfadens einer Signallampe auswirken würden, werden so frühzeitig erkannt, so daß die Möglichkeit einer rechtzeitigen Störungsbehebung vor Eintritt des Gefahrenmomentes gegeben ist.Regardless of who the monitored signal lamp is displayed by, the invention shows a way to check the auxiliary thread of the signal lamp for operational readiness in addition to the main thread of a signal lamp that is currently switched on, or to monitor both the main and the in the notification process Incorporation of a signal lamp. Any errors that would have a detrimental effect on operation or endanger the operation only in the event of a malfunction when the main thread of a signal lamp burns out, are thus recognized at an early stage so that there is the possibility of timely rectification of the malfunction before the moment of danger occurs.
Die Erfindung ist auch anwendbar bei der Überwachung von Signallampen ohne Doppelfadenlampen. Dort übernimmt eine Ersatzlampe die Funktion des Nebenfadens gemäß vorstehend erläutertem Ausführungsbeispiel.The invention can also be used for monitoring signal lamps without double-filament lamps. There, a replacement lamp takes over the function of the secondary thread according to the exemplary embodiment explained above.
Durch die galvanische Verbindung zwischen den Speiseleitungen und der bzw. den in den Überwachungskreis einbezogenen Signallampen ist es möglich, durch dafür vorgesehene Meldeeinrichtungen Aderberührungen und Erdschlüsse auch auf den lampennahen Zuleitungen in gleicher Weise ohne Mehraufwand zu detektieren wie Aderberührungen und Erdschlüsse auf den Speiseleitungen zu den Signallampen.Due to the galvanic connection between the feed lines and the signal lamp (s) included in the monitoring circuit, it is possible to detect wire touches and earth faults on the supply lines near the lamp in the same way without additional effort as wire touches and earth faults on the feed lines to the signal lamps by means of signaling devices provided for this purpose .
Claims (4)
dadurch gekennzeichnet,
daß der Gleichstromüberwachungskreis über die Reihenschaltung aus Haupt- (H) und zugehörigem Ersatzfaden (N) geführt ist.Circuit for monitoring AC-fed signal lamps by means of a DC voltage using at least one DC indicator, preferably remote from the signal lamp, for identifying at least one signaling state and a signal-related AC indicator for switching on a replacement thread when necessary when a main thread that can usually be switched on is blown, in particular for double-filament lamps in traffic signal technology,
characterized by
that the direct current monitoring circuit is routed via the series connection of main (H) and associated replacement thread (N).
daß der Gleichstromüberwachungskreis so hochohmig ausgelegt ist, daß der Überwachungsgleichstrom die Lampenfäden (H, N) nur unterhalb ihrer Leuchtgrenze erregt.Circuit according to claim 1, characterized in
that the direct current monitoring circuit is designed so high-resistance that the direct monitoring current excites the lamp filaments (H, N) only below their luminous limit.
daß die Überwachungsgleichspannung durch Gleichrichtung aus der Wechselstromversorgung der eigenen Signallampe (L) oder weiterer Signallampen abgeleitet ist.Circuit according to claim 1 and 2, characterized in
that the DC monitoring voltage is derived by rectification from the AC power supply of the own signal lamp (L) or other signal lamps.
daß zwei auf unterschiedliche Polarität einer angelegten Gleichspannung ansprechende Gleichstromindikatoren (G1, G2) vorgesehen sind und daß der Gleichstromüberwachungskreis zwei einander parallelgeschaltete, in unterschiedlicher Durchlaßrichtung gepolte Dioden (D1, D2) mit vorgeschalteten Ausschlußkontakten (W/2, W/3) für unterschiedliche Meldezustände aufweist.Circuit according to claim 1 and 2 or 3, characterized in that
that two direct current indicators (G1, G2) responding to different polarity of an applied direct voltage are provided and that the direct current monitoring circuit has two diodes (D1, D2) connected in parallel in different forward directions with upstream exclusion contacts (W / 2, W / 3) for different signaling states having.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4105477 | 1991-02-21 | ||
| DE4105477A DE4105477A1 (en) | 1991-02-21 | 1991-02-21 | CIRCUIT FOR MONITORING AC POWERED SIGNAL LAMPS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0500201A1 true EP0500201A1 (en) | 1992-08-26 |
| EP0500201B1 EP0500201B1 (en) | 1994-05-18 |
Family
ID=6425594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92250035A Expired - Lifetime EP0500201B1 (en) | 1991-02-21 | 1992-02-18 | Circuit for monitoring alternating current supplied signal lamps |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0500201B1 (en) |
| DE (2) | DE4105477A1 (en) |
| FI (1) | FI101361B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19948718C2 (en) * | 1999-09-30 | 2003-02-27 | Siemens Ag | Circuit for operating a luminous sign from a light signal circuit for signal lamps |
| RU2493605C1 (en) * | 2012-02-17 | 2013-09-20 | Евгений Александрович Оленев | Method for operation of lens traffic light with double-filament lamp and apparatus for realising said method |
| RU2556045C1 (en) * | 2014-05-05 | 2015-07-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Уральский государственный университет путей сообщения" (УрГУПС) | Traffic light |
| RU2617023C2 (en) * | 2015-08-21 | 2017-04-19 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уральский государственный университет путей сообщения" (УрГУПС) | Light-emitting diode traffic light with cold state control |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE901785C (en) * | 1951-12-23 | 1954-01-14 | Lorenz C Ag | Circuit arrangement for light signals in railway security systems |
| DE1566901A1 (en) * | 1967-03-21 | 1970-04-30 | Licentia Gmbh | Arrangement for monitoring signal lamps for thread breakage |
| US3968395A (en) * | 1972-09-25 | 1976-07-06 | Siemens Aktiengesellschaft | Two filament electric bulb traffic light |
| DE3516612A1 (en) * | 1985-05-08 | 1986-11-13 | Siemens AG, 1000 Berlin und 8000 München | Circuit for remote monitoring of a light signal |
| DE3813538A1 (en) * | 1988-04-22 | 1989-11-02 | Standard Elektrik Lorenz Ag | Circuit arrangement for the monitored operation of two AC loads via a common supply line |
| DE9102056U1 (en) * | 1991-02-21 | 1991-05-08 | Siemens AG, 8000 München | Circuit for monitoring AC powered signal lamps |
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1991
- 1991-02-21 DE DE4105477A patent/DE4105477A1/en not_active Withdrawn
-
1992
- 1992-02-18 EP EP92250035A patent/EP0500201B1/en not_active Expired - Lifetime
- 1992-02-18 DE DE59200162T patent/DE59200162D1/en not_active Expired - Fee Related
- 1992-02-20 FI FI920743A patent/FI101361B/en active IP Right Grant
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE901785C (en) * | 1951-12-23 | 1954-01-14 | Lorenz C Ag | Circuit arrangement for light signals in railway security systems |
| DE1566901A1 (en) * | 1967-03-21 | 1970-04-30 | Licentia Gmbh | Arrangement for monitoring signal lamps for thread breakage |
| US3968395A (en) * | 1972-09-25 | 1976-07-06 | Siemens Aktiengesellschaft | Two filament electric bulb traffic light |
| DE3516612A1 (en) * | 1985-05-08 | 1986-11-13 | Siemens AG, 1000 Berlin und 8000 München | Circuit for remote monitoring of a light signal |
| DE3813538A1 (en) * | 1988-04-22 | 1989-11-02 | Standard Elektrik Lorenz Ag | Circuit arrangement for the monitored operation of two AC loads via a common supply line |
| DE9102056U1 (en) * | 1991-02-21 | 1991-05-08 | Siemens AG, 8000 München | Circuit for monitoring AC powered signal lamps |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59200162D1 (en) | 1994-06-23 |
| DE4105477A1 (en) | 1992-08-27 |
| FI920743A0 (en) | 1992-02-20 |
| FI101361B1 (en) | 1998-06-15 |
| FI101361B (en) | 1998-06-15 |
| FI920743A (en) | 1992-08-22 |
| EP0500201B1 (en) | 1994-05-18 |
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