EP0457041A2 - Dispositif de signalisation à éclair - Google Patents

Dispositif de signalisation à éclair Download PDF

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Publication number
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
Authority
EP
European Patent Office
Prior art keywords
voltage
flyback converter
ignition
storage capacitor
ignition device
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.)
Granted
Application number
EP91106005A
Other languages
German (de)
English (en)
Other versions
EP0457041A3 (en
EP0457041B1 (fr
Inventor
Siegfried Schmees
Werner Kohl
Wolfgang Grimm
Heiko Janssen
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP0457041A2 publication Critical patent/EP0457041A2/fr
Publication of EP0457041A3 publication Critical patent/EP0457041A3/de
Application granted granted Critical
Publication of EP0457041B1 publication Critical patent/EP0457041B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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).

Landscapes

  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP91106005A 1990-05-14 1991-04-16 Dispositif de signalisation à éclair Expired - Lifetime EP0457041B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4015402 1990-05-14
DE4015402A DE4015402A1 (de) 1990-05-14 1990-05-14 Lichtblitzwarnanlage

Publications (3)

Publication Number Publication Date
EP0457041A2 true EP0457041A2 (fr) 1991-11-21
EP0457041A3 EP0457041A3 (en) 1992-07-22
EP0457041B1 EP0457041B1 (fr) 1995-07-26

Family

ID=6406335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106005A Expired - Lifetime EP0457041B1 (fr) 1990-05-14 1991-04-16 Dispositif de signalisation à éclair

Country Status (3)

Country Link
US (1) US5162703A (fr)
EP (1) EP0457041B1 (fr)
DE (2) DE4015402A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4205871A1 (de) * 1992-02-26 1993-09-02 Hella Kg Hueck & Co Lichtblitzwarnanlage
US5315215A (en) * 1993-04-27 1994-05-24 Metcal, Inc. High-voltage switching circuit

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1783820U (de) * 1956-07-12 1959-02-26 Siemens Ag Photoblitzgeraet.
GB1108516A (en) * 1965-11-19 1968-04-03 James Russell Navigation lights for aircraft
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 (de) * 1974-04-26 1978-07-06 Neumann Elektronik Gmbh, 4330 Muelheim Einrichtung zur Speisung einer Glfihlampe, einer Leuchtdiode oder einer Blitzröhre in einer Notrufsäule
FR2342620A1 (fr) * 1976-02-24 1977-09-23 France Etat Dispositifs generateurs d'eclairs periodiques
US4164679A (en) * 1978-02-27 1979-08-14 Midland-Ross Corporation Strobe lamp series triggering circuit
US4321507A (en) * 1978-11-21 1982-03-23 Austin Electronics, Inc. Strobe power supply
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
FR2571506B1 (fr) * 1984-10-05 1987-01-23 Trt Telecom Radio Electr Systeme d'observation nocturne semi-actif a intensification de lumiere
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

Also Published As

Publication number Publication date
DE59106067D1 (de) 1995-08-31
US5162703A (en) 1992-11-10
DE4015402A1 (de) 1991-11-21
EP0457041A3 (en) 1992-07-22
EP0457041B1 (fr) 1995-07-26

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