EP0457041A2 - Signaling flash device - Google Patents
Signaling flash device Download PDFInfo
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- EP0457041A2 EP0457041A2 EP91106005A EP91106005A EP0457041A2 EP 0457041 A2 EP0457041 A2 EP 0457041A2 EP 91106005 A EP91106005 A EP 91106005A EP 91106005 A EP91106005 A EP 91106005A EP 0457041 A2 EP0457041 A2 EP 0457041A2
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- European Patent Office
- Prior art keywords
- voltage
- ignition
- storage capacitor
- flash
- ignition device
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- 230000011664 signaling Effects 0.000 title 1
- 239000003990 capacitor Substances 0.000 claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000004297 night vision Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
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Classifications
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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
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
Definitions
- the invention relates to a light flash warning system, with a voltage source, with a main flyback converter, with a flash tube, with an ignition device, with at least one storage capacitor and with an electrical switching device.
- Such a light flash warning system is known from US Pat. No. 3,644,818, which has a voltage source, a main flyback converter, a flash tube, an ignition device, at least one storage capacitor and an electrical switching device.
- This flashing light warning system has two storage capacitors, one of which is arranged in series with an electrical switching device. If the electrical switching device is closed, both storage capacitors from the main flyback converter are charged to the same charging voltage. If the electrical switching device is open, the first storage capacitor is charged much more slowly than the second storage capacitor via a resistor.
- the known flashing light warning system has the disadvantage that flashing energy ⁇ 50 mWs cannot be achieved, since both the first storage capacitor and the second storage capacitor are continuously charged during the operation of the flashing light warning system and are discharged via the flash tube.
- the resistance that the causes slower charging of the second capacitor leads to a significantly reduced charging of the first storage capacitor only when the flyback converter is switched off after a predetermined period of time, for. B. the second storage capacitor is charged, that is, a complex control of the flyback converter is required.
- a light energy is emitted by the flash tube, which greatly disrupts flight operations when using night vision goggles, also called night vision goggles (NVG), and thus makes them impossible .
- NVG night vision goggles
- the invention has for its object to provide a light flash warning system that is simple and inexpensive to manufacture and that enables a switching of the light energy between a day flash and a night flash with a safe generation of light flash, the night flash having a light energy that can only be seen at a distance with night vision devices is.
- the object is achieved in that the switching device can switch off the voltage generation of the main flyback converter or the forwarding of the voltage of the at least one storage capacitor, that the ignition device is connected to an additional flyback converter and that the generation of light flashes when the voltage generation of the main flyback converter is switched off or when the forwarding of the voltage of the at least one storage capacitor is carried out by the high-frequency ignition voltage that the ignition device generates.
- the switching device can switch off the voltage generation of the main flyback converter or the forwarding of the voltage of the at least one storage capacitor, because it is thus avoided in a particularly simple and cost-effective manner.
- the storage capacitor for night operation is charged with night vision devices and can release its storage energy to the flash tube.
- the ignition device is connected to an additional flyback converter and that the generation of light flashes when the voltage generation of the main flyback converter is switched off or when the forwarding of the voltage of the at least one storage capacitor is switched off by the high-frequency ignition voltage generated by the ignition device results on the one hand in the advantage that the generation the high-frequency ignition voltage by the ignition device is independent of the voltage supply by the main flyback converter and, on the other hand, the high-frequency ignition voltage generates light flashes that arise solely from the ionization in the flash tube due to the high-frequency high-voltage excitation, which have a light flash energy ⁇ 50 mWs and which are used during night flight operations using night vision devices do not generate interference such.
- B. may consist in a glare to the pilot.
- the switching path of the switching device is arranged parallel to the storage capacitor, because the forwarding of the storage energy of the storage capacitor when the switching device is closed is thus avoided in a particularly simple and inexpensive manner. Since a short circuit is generated when the switching device is closed, the main flyback converter is advantageously designed as a short-circuit proof flyback converter.
- the fact that the switching device is part of the main flyback converter results in the advantage of a particularly simple and inexpensive influencing of the generation of the voltage by the main flyback converter.
- the switching device can be reversed by an operating device, because on the one hand this ensures a particularly safe reversal between day and night operation and on the other hand enables both manual and automatic reversal.
- the ignition device is a parallel or a serial ignition device because, depending on the application, a particularly safe and reliable ignition of the flash tube is made possible both during day and night operation.
- the ignition device has a clock generator or is connected to a clock generator gives the advantage of a particularly safe and reliable ignition of the flash tube at fixed or variable time intervals.
- FIG. 1 shows a block diagram of an embodiment of a flashing light warning system according to the invention.
- a main flyback converter (HW) is electrically conductively connected to a voltage source (U), which acts as a DC voltage source or as an AC voltage source can be trained.
- the main flyback converter (HW) converts the voltage of the voltage source (U) into a DC voltage that is required to charge a storage capacitor (K) in parallel with the outputs of the main flyback converter (HW) to a voltage sufficient to run one in parallel with the Storage capacitor (K) arranged flash tube (R) to supply with the ignition with an energy that ensures sufficient light energy during daytime operation.
- An electrical switching device (S) is arranged parallel to the storage capacitor (K), for example, which can be reversed in its switching positions by an operating device (B).
- the switching device (S) can be designed as a transistor, a tyristor or a similar switching component.
- the changeover by the operating device can take place on the basis of a manual input on the operating device (B), but it can also take place automatically depending on predetermined parameters. For example, automatic changeover can take effect during night operation.
- the ignition device (Z) Since the short-circuit-proof main flyback converter (HW) is short-circuited when the switching device (S) is closed and the ignition device (Z) cannot generate voltage for generating high-frequency ignition signals, the ignition device (Z) is here, for example, via an additional flyback converter (ZW) to the voltage source (U) connected.
- the additional flyback converter (ZW) generates a direct voltage from the voltage from the voltage source (U), which is made available to the ignition device (Z) for generating a high-frequency ignition voltage.
- the additional flyback converter (ZW) can be designed as a particularly simple and inexpensive component. In another embodiment, the additional flyback converter (ZW) can also be part of the main flyback converter (HW) in a particularly simple and inexpensive manner.
- the ignition device (Z) is designed here, for example, as a parallel ignition device (Z).
- the ignition device (Z) can have a clock generator for the periodic generation of the ignition signals or can be controlled by a clock generator.
- the ignition signals are supplied here by way of example from the ignition device (Z) via an ignition anode (ZA) to the light flash tube (R).
- the ignition device (Z) can also be designed as a serial ignition device in which the ignition signals are fed to the light flash tube (R) via the cathode of the light flash tube (R).
- the operating device (B) can act on a switching device (S) which controls the main flyback converter (HW) in such a way that the outputs do not provide a voltage which is sufficient to charge the storage capacitor (K) to a charging voltage charge.
- S switching device
- HW main flyback converter
- the mode of operation of the flashing light warning system shown in FIG. 1 is described in more detail below using an example.
- the switching device (S) is controlled by the operating device (B) in such a way that the switching path of the switching device (S) is open. If the flashing light warning system is put into operation, the storage capacitor (K) is charged. In accordance with the periodic high-frequency ignition signals generated by the ignition device (Z), the energy stored in the storage capacitor is periodically converted into high-energy light flashes by discharging the storage capacitor (K).
- the storage energy of the storage capacitor (K) can, for example, be approximately 100 Ws. The storage energy is dependent on the respective requirements.
- NVG Night vision goggles
- the switching path of the switching device (S) is closed, so that the storage capacitor (K) is short-circuited, no storage energy can be built up in the storage capacitor (K) and no storage energy can be emitted by the storage capacitor (K) to the light flash tube (R).
- the light flash tube (R) is thus driven solely by the ignition signals generated by the ignition device (Z).
- These high-frequency periodic high-voltage signals from the ignition device (Z) generate a brief ionization in the light flash tube (R), so that an ionization flash of low light energy is generated with each ignition signal from the ignition device (Z).
- the light energy is, for example, less than about 50 mWs.
- light flash energies in the order of magnitude of about 10 mWs can be achieved.
- FIG. 2 shows an example of an ignition device (Z), which is a parallel ignition device (Z).
- FIG. 3 shows an example of an ignition device (Z) which is a serial ignition device (Z).
- Both ignition devices are constructed here similarly by way of example, in that they have a resistor (W) and an ignition capacitor (ZK), which is connected to a transformer (T), the ignition energy of the ignition capacitor (ZK) being switched by a switch (TH), which here exemplarily designed as a tyristor is that can be controlled by a clock generator, not shown here, can be switched to the primary winding of the transformer (T), so that the latter supplies the ignition signal to the flash tube (R) via the secondary winding.
- W resistor
- ZK ignition capacitor
- T transformer
- TH exemplarily designed as a tyristor is that can be controlled by a clock generator, not shown here, can be switched to the primary winding of the transformer (T), so that the latter supplies the ignition signal to the flash tube (R) via the secondary wind
- the secondary winding of the transformer (T) is connected to the ignition anode (ZA) of the flash tube (R).
- the secondary winding of the transformer (T) is connected to the cathode of the flash tube (R).
- the ignition anode (ZA) is connected to the negative voltage connection of the main flyback converter (HW). In both circuit arrangements, the ignition device (Z) is supplied with voltage via the additional flyback converter (ZW).
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- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
Description
Die Erfindung betrifft eine Lichtblitzwarnanlage, mit einer Spannungsquelle, mit einem Hauptsperrwandler, mit einer Blitzröhre, mit einer Zündeinrichtung, mit mindestens einem Speicherkondensator und mit einer elektrischen Schalteinrichtung.The invention relates to a light flash warning system, with a voltage source, with a main flyback converter, with a flash tube, with an ignition device, with at least one storage capacitor and with an electrical switching device.
Aus der US-PS 36 44 818 ist eine derartige Lichtblitzwarnanlage bekannt, die eine Spannungsquelle, einen Hauptsperrwandler, eine Blitzröhre, eine Zündeinrichtung, mindestens einen Speicherkondensator und eine elektrische Schalteinrichtung aufweist. Diese Lichtblitzwarnanlage verfügt über zwei Speicherkondensatoren, von denen einer in Serie mit einer elektrischen Schalteinrichtung angeordnet ist. Ist die elektrische Schalteinrichtung geschlossen, so werden beide Speicherkondensatoren aus dem Hauptsperrwandler auf die gleiche Ladespannung aufgeladen. Ist die elektrische Schalteinrichtung geöffnet, so wird der erste Speicherkondensator über einen Widerstand wesentlich langsamer aufgeladen als der zweite Speicherkondensator. Durch diese Maßnahmen soll die der Blitzröhre zugeführte elektrische Energie und damit die Lichtblitzenergie in Abhängigkeit von der Stellung der elektrischen Schalteinrichtung derart beeinflußbar sein, daß die Lichtblitzenergie bei geöffneter Schalteinrichtung vermindert wird.Such a light flash warning system is known from US Pat. No. 3,644,818, which has a voltage source, a main flyback converter, a flash tube, an ignition device, at least one storage capacitor and an electrical switching device. This flashing light warning system has two storage capacitors, one of which is arranged in series with an electrical switching device. If the electrical switching device is closed, both storage capacitors from the main flyback converter are charged to the same charging voltage. If the electrical switching device is open, the first storage capacitor is charged much more slowly than the second storage capacitor via a resistor. These measures are intended to be able to influence the electrical energy supplied to the flash tube and thus the light flash energy as a function of the position of the electrical switching device in such a way that the light flash energy is reduced when the switching device is open.
Die vorbekannte Lichtblitzwarnanlage weist jedoch den Nachteil auf, daß Lichtblitzenergien < 50 mWs nicht erreichbar sind, da sowohl der erste Speicherkondensator als auch der zweite Speicherkondensator bei dem Betrieb der Lichtblitzwarnanlage fortwährend aufgeladen werden und über die Blitzröhre entladen werden. Der Widerstand, der die langsamere Aufladung des zweiten Kondensators bewirkt, führt nur dann zu einer wesentlich verringerten Aufladung des ersten Speicherkondensators, wenn der Sperrwandler nach einer vorgegebenen Zeitdauer abgeschaltet wird, wenn z. B. der zweite Speicherkondensator aufgeladen ist, das heißt, es ist eine aufwendige Steuerung des Sperrwandlers erforderlich. Aber auch dann, wenn der erste Speicherkondensator aufgeladen und über die Blitzröhre entladen wird, wird von der Blitzröhre eine Lichtenergie emittiert, die den Flugbetrieb bei der Benutzung von Nachtsichtgeräten, auch genannt Night-Vision-Goggles (NVG), stark stört und somit unmöglich macht.However, the known flashing light warning system has the disadvantage that flashing energy <50 mWs cannot be achieved, since both the first storage capacitor and the second storage capacitor are continuously charged during the operation of the flashing light warning system and are discharged via the flash tube. The resistance that the causes slower charging of the second capacitor, leads to a significantly reduced charging of the first storage capacitor only when the flyback converter is switched off after a predetermined period of time, for. B. the second storage capacitor is charged, that is, a complex control of the flyback converter is required. But even when the first storage capacitor is charged and discharged via the flash tube, a light energy is emitted by the flash tube, which greatly disrupts flight operations when using night vision goggles, also called night vision goggles (NVG), and thus makes them impossible .
Der Erfindung liegt die Aufgabe zugrunde, eine Lichtblitzwarnanlage zu schaffen, die einfach und kostengünstig herstellbar ist und die bei einer sicheren Lichtblitzerzeugung eine Umsteuerung der Lichtenergie zwischen einem Tagblitz und einem Nachtblitz ermöglicht, wobei der Nachtblitz eine Lichtenergie aufweist, die auf Entfernung nur mit Nachtsichtgeräten erkennbar ist.The invention has for its object to provide a light flash warning system that is simple and inexpensive to manufacture and that enables a switching of the light energy between a day flash and a night flash with a safe generation of light flash, the night flash having a light energy that can only be seen at a distance with night vision devices is.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Schalteinrichtung die Spannungserzeugung des Hauptsperrwandlers oder die Weiterleitung der Spannung des mindestens einen Speicherkondensators abschalten kann, daß die Zündeinrichtung mit einem Zusatzsperrwandler verbunden ist und daß die Lichtblitzerzeugung bei abgeschalteter Spannungserzeugung des Hauptsperrwandlers oder bei abgeschalteter Weiterleitung der Spannung des mindestens einen Speicherkondensators durch die hochfrequente Zündspannung erfolgt, die die Zündeinrichtung erzeugt.The object is achieved in that the switching device can switch off the voltage generation of the main flyback converter or the forwarding of the voltage of the at least one storage capacitor, that the ignition device is connected to an additional flyback converter and that the generation of light flashes when the voltage generation of the main flyback converter is switched off or when the forwarding of the voltage of the at least one storage capacitor is carried out by the high-frequency ignition voltage that the ignition device generates.
Es ist von Vorteil, daß die Schalteinrichtung die Spannungserzeugung des Hauptsperrwandlers oder die Weiterleitung der Spannung des mindestens einen Speicherkondensators abschalten kann, weil somit auf besonders einfache und kostengünstige Weise vermieden wird, daß der Speicherkondensator für den Nachtbetrieb mit Nachtsichtgeräten aufgeladen wird und seine Speicherenergie an die Blitzröhre abgeben kann.It is advantageous that the switching device can switch off the voltage generation of the main flyback converter or the forwarding of the voltage of the at least one storage capacitor, because it is thus avoided in a particularly simple and cost-effective manner. that the storage capacitor for night operation is charged with night vision devices and can release its storage energy to the flash tube.
Dadurch, daß die Zündeinrichtung mit einem Zusatzsperrwandler verbunden ist und daß die Lichtblitzerzeugung bei abgeschalteter Spannungserzeugung des Hauptsperrwandlers oder bei abgeschalteter Weiterleitung der Spannung des mindestens einen Speicherkondensators durch die hochfrequente Zündspannung erfolgt, die die Zündeinrichtung erzeugt, ergibt sich zum einen der Vorteil, daß die Erzeugung der hochfrequenten Zündspannung durch die Zündeinrichtung unabhängig von der Spannungsversorgung durch den Hauptsperrwandler ist und zum anderen durch die hochfrequente Zündspannung Lichtblitze erzeugt werden, die allein durch die Ionisation in der Lichtblitzröhre aufgrund der hochfrequenten Hochspannungsanregung entstehen, die eine Lichtblitzenergie < 50 mWs aufweisen und die bei Nachtflugbetrieb unter Verwendung von Nachtsichtgeräten keine Störungen erzeugen, die z. B. in einer Blendung des Piloten bestehen können.The fact that the ignition device is connected to an additional flyback converter and that the generation of light flashes when the voltage generation of the main flyback converter is switched off or when the forwarding of the voltage of the at least one storage capacitor is switched off by the high-frequency ignition voltage generated by the ignition device results on the one hand in the advantage that the generation the high-frequency ignition voltage by the ignition device is independent of the voltage supply by the main flyback converter and, on the other hand, the high-frequency ignition voltage generates light flashes that arise solely from the ionization in the flash tube due to the high-frequency high-voltage excitation, which have a light flash energy <50 mWs and which are used during night flight operations using night vision devices do not generate interference such. B. may consist in a glare to the pilot.
Es ist von Vorteil, daß die Schaltstrecke der Schalteinrichtung parallel zu dem Speicherkondensator angeordnet ist, weil somit auf besonders einfache und kostengünstige Weise die Weiterleitung der Speicherenergie des Speicherkondensators bei geschlossener Schalteinrichtung vermieden wird. Da bei geschlossener Schalteinrichtung ein Kurzschluß erzeugt wird, ist der Hauptsperrwandler vorteilhaft als ein kurzschlußfester Hauptsperrwandler ausgebilet.It is advantageous that the switching path of the switching device is arranged parallel to the storage capacitor, because the forwarding of the storage energy of the storage capacitor when the switching device is closed is thus avoided in a particularly simple and inexpensive manner. Since a short circuit is generated when the switching device is closed, the main flyback converter is advantageously designed as a short-circuit proof flyback converter.
Dadurch, daß die Schalteinrichtung Teil des Hauptsperrwandlers ist, ergibt sich der Vorteil einer besonders einfachen und kostengünstigen Beeinflussung der Erzeugung der Spannung durch den Hauptsperrwandler.The fact that the switching device is part of the main flyback converter results in the advantage of a particularly simple and inexpensive influencing of the generation of the voltage by the main flyback converter.
Es ist von Vorteil, daß die Schalteinrichtung durch eine Bedieneinrichtung umsteuerbar ist, weil somit zum einen eine besonders sichere Umsteuerung zwischen Tagbetrieb und Nachtbetrieb sichergestellt ist und zum anderen sowohl eine manuelle als auch eine automatische Umsteuerung ermöglicht wird.It is advantageous that the switching device can be reversed by an operating device, because on the one hand this ensures a particularly safe reversal between day and night operation and on the other hand enables both manual and automatic reversal.
Es ist von Vorteil, daß die Zündeinrichtung eine parallele oder eine serielle Zündeinrichtung ist, weil somit je nach Anwendungsfall eine besonders sichere und zuverlässige Zündung der Blitzröhre sowohl bei Tagbetrieb als auch bei Nachtbetrieb ermöglicht wird.It is advantageous that the ignition device is a parallel or a serial ignition device because, depending on the application, a particularly safe and reliable ignition of the flash tube is made possible both during day and night operation.
Dadurch, daß die Zündeinrichtung einen Taktgenerator aufweist oder mit einem Taktgenerator verbunden ist, ergibt sich der Vorteil einer besonders sicheren und zuverlässigen Zündung der Blitzröhre in festen oder veränderlichen Zeitabständen.The fact that the ignition device has a clock generator or is connected to a clock generator gives the advantage of a particularly safe and reliable ignition of the flash tube at fixed or variable time intervals.
Ausführungsbeispiele des Erfindungsgegenstands sind in den Zeichnungen dargestellt und werden im folgenden anhand der Zeichnungen näher beschrieben.Exemplary embodiments of the subject matter of the invention are shown in the drawings and are described in more detail below with reference to the drawings.
Es zeigen
- Figur 1 ein Blockschaltbild einer erfindungsgemäßen Lichtblitzwarnlage,
- Figur 2 eine Zündeinrichtung in Parallelbetrieb,
- Figur 3 eine Zündeinrichtung in Serienbetrieb.
- FIG. 1 shows a block diagram of a flashing light warning system according to the invention,
- FIG. 2 shows an ignition device in parallel operation,
- Figure 3 shows an ignition device in series operation.
Figur 1 zeigt ein Blockschaltbild einer Ausführungsform einer erfindungsgemäßen Lichtblitzwarnanlage. Ein Hauptsperrwandler (HW) ist hierbei elektrisch leitend mit einer Spannungsquelle (U) verbunden, die als eine Gleichspannungsquelle oder als eine Wechselspannungsquelle ausgebildet sein kann. Der Hauptsperrwandler (HW) wandelt die Spannung der Spannungsquelle (U) in eine Gleichspannung um, die benötigt wird, um einen Speicherkondensator (K) parallel zu den Ausgängen des Hauptsperrwandlers (HW) auf eine Spannung aufzuladen, die ausreicht, um eine parallel zu dem Speicherkondensator (K) angeordnete Blitzröhre (R) bei der Zündung mit einer Energie zu versorgen, die bei dem Tagbetrieb eine ausreichende Lichtenergie sicherstellt.Figure 1 shows a block diagram of an embodiment of a flashing light warning system according to the invention. A main flyback converter (HW) is electrically conductively connected to a voltage source (U), which acts as a DC voltage source or as an AC voltage source can be trained. The main flyback converter (HW) converts the voltage of the voltage source (U) into a DC voltage that is required to charge a storage capacitor (K) in parallel with the outputs of the main flyback converter (HW) to a voltage sufficient to run one in parallel with the Storage capacitor (K) arranged flash tube (R) to supply with the ignition with an energy that ensures sufficient light energy during daytime operation.
Parallel zu dem Speicherkondensator (K) ist hier beispielhaft eine elektrische Schalteinrichtung (S) angeordnet, die von einer Bedieneinrichtung (B) in ihren Schaltstellungen umsteuerbar ist. Die Schalteinrichtung (S) kann dabei als ein Transistor, ein Tyristor oder ein ähnliches Schaltbauteil ausgebildet sein. Die Umsteuerung durch die Bedieneinrichtung kann aufgrund einer manuellen Eingabe an der Bedieneinrichtung (B) erfolgen, sie kann jedoch auch automatisch in Abhängigkeit von vorgegebenen Parametern erfolgen. Z. B. kann beim Nachtbetrieb eine automatische Umsteuerung wirksam werden.An electrical switching device (S) is arranged parallel to the storage capacitor (K), for example, which can be reversed in its switching positions by an operating device (B). The switching device (S) can be designed as a transistor, a tyristor or a similar switching component. The changeover by the operating device can take place on the basis of a manual input on the operating device (B), but it can also take place automatically depending on predetermined parameters. For example, automatic changeover can take effect during night operation.
Da bei geschlossener Schalteinrichtung (S) der kurzschlußfeste Hauptsperrwandler (HW) kurzgeschlossen ist, und die Zündeinrichtung (Z) zur Erzeugung von hochfrequenten Zündsignalen nicht mit Spannung versorgen kann, ist die Zündeinrichtung (Z) hier beispielhaft über einen Zusatzsperrwandler (ZW) an die Spannungsquelle (U) angeschlossen. Der Zusatzsperrwandler (ZW) erzeugt aus der Spannung von der Spannungsquelle (U) eine Gleichspannung, die der Zündeinrichtung (Z) zur Erzeugung einer hochfrequenten Zündspannung zur Verfügung gestellt wird. Der Zusatzsperrwandler (ZW) kann dabei als ein besonders einfaches und kostengünstiges Bauteil ausgebildet sein. Bei einem anderen Ausführungsbeispiel kann der Zusatzsperrwandler (ZW) auch in besonders einfacher und kostengünstiger Weise Teil des Hauptsperrwandlers (HW) sein.Since the short-circuit-proof main flyback converter (HW) is short-circuited when the switching device (S) is closed and the ignition device (Z) cannot generate voltage for generating high-frequency ignition signals, the ignition device (Z) is here, for example, via an additional flyback converter (ZW) to the voltage source (U) connected. The additional flyback converter (ZW) generates a direct voltage from the voltage from the voltage source (U), which is made available to the ignition device (Z) for generating a high-frequency ignition voltage. The additional flyback converter (ZW) can be designed as a particularly simple and inexpensive component. In another embodiment, the additional flyback converter (ZW) can also be part of the main flyback converter (HW) in a particularly simple and inexpensive manner.
Die Zündeinrichtung (Z) ist hier beispielhaft als eine parallele Zündeinrichtung (Z) ausgebildet. Die Zündeinrichtung (Z) kann zur periodischen Erzeugung der Zündsignale über einen Taktgenerator verfügen, oder von einem Taktgenerator ansteuerbar sein. Die Zündsignale werden hier beispielhaft von der Zündeinrichtung (Z) über eine Zündanode (ZA) der Lichtblitzröhre (R) zugeführt. Bei einem anderen Ausführungsbeispiel kann die Zündeinrichtung (Z) auch als eine serielle Zündeinrichtung ausgebildet sein, bei der die Zündsignale der Lichtblitzröhre (R) über die Kathode der Lichtblitzröhre (R) zugeführt werden.The ignition device (Z) is designed here, for example, as a parallel ignition device (Z). The ignition device (Z) can have a clock generator for the periodic generation of the ignition signals or can be controlled by a clock generator. The ignition signals are supplied here by way of example from the ignition device (Z) via an ignition anode (ZA) to the light flash tube (R). In another exemplary embodiment, the ignition device (Z) can also be designed as a serial ignition device in which the ignition signals are fed to the light flash tube (R) via the cathode of the light flash tube (R).
Bei einem anderen Ausführungsbeispiel kann die Bedieneinrichtung (B) auf eine Schalteinrichtung (S) wirken, die den Hauptsperrwandler (HW) derart ansteuert, daß dieser an seinen Ausgängen keine Spannung zur Verfügung stellt, die ausreicht, um den Speicherkondensator (K) auf eine Ladespannung aufzuladen.In another exemplary embodiment, the operating device (B) can act on a switching device (S) which controls the main flyback converter (HW) in such a way that the outputs do not provide a voltage which is sufficient to charge the storage capacitor (K) to a charging voltage charge.
Die Wirkungsweise der unter Figur 1 gezeigten Lichtblitzwarnanlage wird im folgenden anhand eines Beispiels näher beschrieben.The mode of operation of the flashing light warning system shown in FIG. 1 is described in more detail below using an example.
Bei Tagbetrieb wird die Schalteinrichtung (S) durch die Bedieneinrichtung (B) derart angesteuert, daß die Schaltstrecke der Schalteinrichtung (S) geöffnet ist. Wird die Lichtblitzwarnanlage in Betrieb genommen, so wird der Speicherkondensator (K) aufgeladen. Entsprechend den durch die Zündeinrichtung (Z) erzeugten periodischen hochfrequenten Zündsignalen wird die in dem Speicherkondensator gespeicherte Energie periodisch durch Entladen des Speicherkondensators (K) in Lichtblitze hoher Energie umgesetzt. Die Speicherenergie des Speicherkondensators (K) kann beispielhaft bei etwa 100 Ws liegen. Die Speicherenergie ist dabei von den jeweiligen Anforderungen abhängig. Für den Nachtbetrieb in Verbindung mit der Benutzung von Nachtsichtgeräten, auch genannt Night-Vision-Goggles (NVG), wird angesteuert durch die Bedieneinrichtung (B) die Schaltstrecke der Schalteinrichtung (S) geschlossen, so daß der Speicherkondensator (K) kurzgeschlossen wird, keine Speicherenergie in dem Speichekondensator (K) aufgebaut werden kann und keine Speicherenergie durch den Speicherkondensator (K) an die Lichtblitzröhre (R) abgegeben werden kann.During daytime operation, the switching device (S) is controlled by the operating device (B) in such a way that the switching path of the switching device (S) is open. If the flashing light warning system is put into operation, the storage capacitor (K) is charged. In accordance with the periodic high-frequency ignition signals generated by the ignition device (Z), the energy stored in the storage capacitor is periodically converted into high-energy light flashes by discharging the storage capacitor (K). The storage energy of the storage capacitor (K) can, for example, be approximately 100 Ws. The storage energy is dependent on the respective requirements. For night operation in connection with the use of night vision devices, also called Night vision goggles (NVG), controlled by the operating device (B), the switching path of the switching device (S) is closed, so that the storage capacitor (K) is short-circuited, no storage energy can be built up in the storage capacitor (K) and no storage energy can be emitted by the storage capacitor (K) to the light flash tube (R).
Bei geschlossener Schaltstrecke der Schalteinrichtung (S) wird die Lichtblitzröhre (R) somit allein durch die Zündsignale, die von der Zündeinrichtung (Z) erzeugt werden, angesteuert. Diese hochfrequenten periodischen Hochspannungssignale von der Zündeinrichtung (Z) erzeugen in der Lichtblitzröhre (R) eine kurzzeitige Ionisation, so daß bei jedem Zündsignale von der Zündeinrichtung (Z) ein Ionisationsblitz geringer Lichtenergie erzeugt wird. Die Lichtenergie ist hier beispielhaft kleiner etwa 50 mWs. Es können dabei beispielhaft Lichtblitzenergien in der Größenordnung von etwa 10 mWs erreicht werden.When the switching path of the switching device (S) is closed, the light flash tube (R) is thus driven solely by the ignition signals generated by the ignition device (Z). These high-frequency periodic high-voltage signals from the ignition device (Z) generate a brief ionization in the light flash tube (R), so that an ionization flash of low light energy is generated with each ignition signal from the ignition device (Z). The light energy is, for example, less than about 50 mWs. For example, light flash energies in the order of magnitude of about 10 mWs can be achieved.
Bei der Erzeugung derart geringer Lichtblitzenergien wird der Betrieb von Flugzeugen oder anderen Verkehrsmitteln bei der Verwendung von Nachtsichtgeräten zum einen nicht durch energiereiche Lichtblitze gestört und zum anderen wird sichergestellt, daß die Verkehrsmittel bei der Verwendung von Nachtsichtgeräten erkennbar bleiben.In the generation of such low flash energy, the operation of aircraft or other means of transport when using night vision devices is not disturbed by high-energy flashes of light and on the other hand it is ensured that the means of transport remain recognizable when using night vision devices.
Figur 2 zeigt beispielhaft eine Zündeinrichtung (Z), die eine parallele Zündeinrichtung (Z) ist. In Figur 3 ist beispielhaft eine Zündeinrichtung (Z) gezeigt, die eine serielle Zündeinrichtung (Z) ist. Beide Zündeinrichtungen sind hier beispielhaft ähnlich aufgebaut, indem sie einen Widerstand (W) und einen Zündkondensator (ZK) aufweisen, der mit einem Transformator (T) verbunden ist, wobei die Zündenergie des Zündkondensators (ZK) durch einen Schalter (TH), der hier beispielhaft als ein Tyristor ausgebildet ist, der von einem hier nicht gezeigten Taktgenerator ansteuerbar ist, auf die Primärwicklung des Transformators (T) schaltbar ist, so daß dieser über die Sekundärwicklung das Zündsignal der Lichtblitzröhre (R) zuleitet.Figure 2 shows an example of an ignition device (Z), which is a parallel ignition device (Z). FIG. 3 shows an example of an ignition device (Z) which is a serial ignition device (Z). Both ignition devices are constructed here similarly by way of example, in that they have a resistor (W) and an ignition capacitor (ZK), which is connected to a transformer (T), the ignition energy of the ignition capacitor (ZK) being switched by a switch (TH), which here exemplarily designed as a tyristor is that can be controlled by a clock generator, not shown here, can be switched to the primary winding of the transformer (T), so that the latter supplies the ignition signal to the flash tube (R) via the secondary winding.
Bei der unter Figur 2 gezeigten parallelen Zündeinrichtung (Z) ist die Sekundärwicklung des Transformators (T) mit der Zündanode (ZA) der Lichtblitzröhre (R) verbunden. Bei der unter Figur 3 gezeigten seriellen Zündeinrichtung (Z) ist die Sekundärwicklung des Transformators (T) mit der Kathode der Lichtblitzröhre (R) verbunden. Die Zündanode (ZA) ist hierbei mit dem negativen Spannungsanschluß des Hauptsperrwandlers (HW) verbunden. Bei beiden Schaltungsanordnungen wird die Zündeinrichtung (Z) über den Zusatzsperrwandler (ZW) mit Spannung versorgt.In the parallel ignition device (Z) shown in FIG. 2, the secondary winding of the transformer (T) is connected to the ignition anode (ZA) of the flash tube (R). In the serial ignition device (Z) shown in FIG. 3, the secondary winding of the transformer (T) is connected to the cathode of the flash tube (R). The ignition anode (ZA) is connected to the negative voltage connection of the main flyback converter (HW). In both circuit arrangements, the ignition device (Z) is supplied with voltage via the additional flyback converter (ZW).
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4015402 | 1990-05-14 | ||
| DE4015402A DE4015402A1 (en) | 1990-05-14 | 1990-05-14 | LIGHTNING FLASH WARNING SYSTEM |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0457041A2 true EP0457041A2 (en) | 1991-11-21 |
| EP0457041A3 EP0457041A3 (en) | 1992-07-22 |
| EP0457041B1 EP0457041B1 (en) | 1995-07-26 |
Family
ID=6406335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91106005A Expired - Lifetime EP0457041B1 (en) | 1990-05-14 | 1991-04-16 | Signaling flash device |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5162703A (en) |
| EP (1) | EP0457041B1 (en) |
| DE (2) | DE4015402A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4205871A1 (en) * | 1992-02-26 | 1993-09-02 | Hella Kg Hueck & Co | LIGHTNING FLASH WARNING SYSTEM |
| US5315215A (en) * | 1993-04-27 | 1994-05-24 | Metcal, Inc. | High-voltage switching circuit |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1108516A (en) * | 1965-11-19 | 1968-04-03 | James Russell | Navigation lights for aircraft |
| FR2342620A1 (en) * | 1976-02-24 | 1977-09-23 | France Etat | Light beacon for navigation and distress signalling - has chopper DC to DC step up converter supplying discharge lamp and pulsed ignition thyristor |
| US4321507A (en) * | 1978-11-21 | 1982-03-23 | Austin Electronics, Inc. | Strobe power supply |
| EP0178015A1 (en) * | 1984-10-05 | 1986-04-16 | Telecommunications Radioelectriques Et Telephoniques T.R.T. | Semi-active night observation system with intensification of light |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1783820U (en) * | 1956-07-12 | 1959-02-26 | Siemens Ag | PHOTOBLASH UNIT. |
| US3644818A (en) * | 1971-03-10 | 1972-02-22 | Gte Sylvania Inc | Electronic flashlamp power supply |
| US3846750A (en) * | 1972-07-27 | 1974-11-05 | Flash Technology Corp Of Ameri | Day-night flash beacon |
| DE2420197C3 (en) * | 1974-04-26 | 1978-07-06 | Neumann Elektronik Gmbh, 4330 Muelheim | Device for supplying a light bulb, a light emitting diode or a flash tube in an emergency call box |
| US4164679A (en) * | 1978-02-27 | 1979-08-14 | Midland-Ross Corporation | Strobe lamp series triggering circuit |
| JPS5738594A (en) * | 1980-08-20 | 1982-03-03 | Ushio Electric Inc | Device for firing discharge lamp |
| US4477796A (en) * | 1982-09-29 | 1984-10-16 | Kearsley Wayne A | Spatial acquisition flash beacon |
| US4656397A (en) * | 1985-03-04 | 1987-04-07 | Simplec Manufacturing Company, Inc. | Method and apparatus for controlling flash tube discharge |
| GB8524735D0 (en) * | 1985-10-08 | 1985-11-13 | Lucas Ind Plc | Electric circuit arrangement |
-
1990
- 1990-05-14 DE DE4015402A patent/DE4015402A1/en not_active Withdrawn
-
1991
- 1991-04-16 EP EP91106005A patent/EP0457041B1/en not_active Expired - Lifetime
- 1991-04-16 DE DE59106067T patent/DE59106067D1/en not_active Expired - Fee Related
- 1991-05-08 US US07/696,965 patent/US5162703A/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1108516A (en) * | 1965-11-19 | 1968-04-03 | James Russell | Navigation lights for aircraft |
| FR2342620A1 (en) * | 1976-02-24 | 1977-09-23 | France Etat | Light beacon for navigation and distress signalling - has chopper DC to DC step up converter supplying discharge lamp and pulsed ignition thyristor |
| US4321507A (en) * | 1978-11-21 | 1982-03-23 | Austin Electronics, Inc. | Strobe power supply |
| EP0178015A1 (en) * | 1984-10-05 | 1986-04-16 | Telecommunications Radioelectriques Et Telephoniques T.R.T. | Semi-active night observation system with intensification of light |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59106067D1 (en) | 1995-08-31 |
| US5162703A (en) | 1992-11-10 |
| DE4015402A1 (en) | 1991-11-21 |
| EP0457041A3 (en) | 1992-07-22 |
| EP0457041B1 (en) | 1995-07-26 |
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