EP1315404B1 - Lichtinformationseinrichtung zum Anzeigen des Betriebszustandes eines Systems, insbesondere für die Avionics - Google Patents
Lichtinformationseinrichtung zum Anzeigen des Betriebszustandes eines Systems, insbesondere für die Avionics Download PDFInfo
- Publication number
- EP1315404B1 EP1315404B1 EP02292760A EP02292760A EP1315404B1 EP 1315404 B1 EP1315404 B1 EP 1315404B1 EP 02292760 A EP02292760 A EP 02292760A EP 02292760 A EP02292760 A EP 02292760A EP 1315404 B1 EP1315404 B1 EP 1315404B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- branch
- branches
- operating state
- fault
- 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
Links
- 238000000034 method Methods 0.000 claims abstract description 16
- 230000011664 signaling Effects 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 230000006870 function Effects 0.000 claims description 5
- 230000004913 activation Effects 0.000 claims 4
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 238000005286 illumination Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 4
- 235000021183 entrée Nutrition 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
- G08B5/38—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources using flashing light
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/52—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits in a parallel array of LEDs
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/54—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits in a series array of LEDs
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/58—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving end of life detection of LEDs
-
- 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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/20—Responsive to malfunctions or to light source life; for protection
- H05B47/21—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in parallel
Definitions
- the present invention relates to a light information device relating to the operating state of a system and a method of managing such a device, particularly in the avionics field.
- signaling indicators type lights such as light emitting diodes
- pilots possibly maintenance operators, operating states of the various systems present in these aircraft.
- the pilots are therefore led to regularly check the good operating status of such indicators by means of a test command which has the effect of lighting a pre-determined set of these, for example those of the ceiling panel.
- the drivers must then change the faulty LEDs online.
- a control button 12 causes all these LEDs to be lit simultaneously. allows the pilot to easily spot a light that remains off.
- LEDs consisting each of several light emitting elements 20 in series / parallel assembly, as illustrated in FIG. 2.
- the failure of an element 20 does not then cause the indicator to fail, but a simple drop. of brightness.
- Such a device is not really fault-tolerant but has a degraded operating mode in case of failure.
- US Pat. No. 3,781,853 discloses a maritime signaling system in which several light sources are connected together to project a simultaneous burst. The purpose of this system is to continue operate if one of the light sources fails.
- Each light source includes a flash beacon, a daylight controlled circuit, an off lamp detection circuit, and a lamp change circuit. The output power of each flash beacon synchronizes all light sources. In case one of the sources breaks down, the others continue to work.
- the subject of the invention is a luminous information device for the operating state of a system making it possible to overcome the disadvantages of the devices of the prior art by detecting the failures of the signaling indicators and by guaranteeing a smooth operation even in presence of certain failures.
- the invention also relates to a method for managing such a device.
- the present invention relates to a light information device relating to the operating state of a system comprising at least one indicator light and means for detecting failure of this or these indicators, characterized in that each indicator comprises m branches in parallel. each consisting of n light emitting diodes in series, and means for selecting a branch, m and n being integers such that: m ⁇ 2 and n ⁇ 1.
- first m ends of each branch are connected together, their second ends being connected to the different inputs of the selection means, which, as a function of a control command, connect a selected branch to the output of the device.
- each indicator, its control module and its switch are integrated in a single housing.
- each indicator light is alternately illuminated with a scanning frequency of the order of a few kilohertz high enough not to be perceived by the human eye, the current / voltage parameters being checked at each scan.
- a scanning frequency of the order of a few kilohertz high enough not to be perceived by the human eye, the current / voltage parameters being checked at each scan.
- the duty cycle of the other branches without fault is modified to keep the same overall brightness at the indicator whose at least one branch is in default.
- the invention can advantageously be used in the avionics field.
- a permanent automatic test of all the lights of the cockpit of an airplane is carried out and the pilot is thus relieved of this task.
- Such a continuous test makes it possible to avoid the non-detection. a hidden failure, by the pilot.
- the redundant structure of LEDs allows an immediate dynamic management in case of failure of this first redundancy without visible repercussions at the level of the pilot, and thus without overload for this one.
- FIGS 1 and 2 illustrate two devices of the prior art.
- FIGS 3 and 4 illustrate the device of the invention.
- FIG. 5 illustrates an advantageous embodiment of the device of the invention.
- a voltage measuring device 34 connected between the input E and the output S of the indicator makes it possible to know the voltage at the terminals of this indicator.
- An intensity measuring device 35 connected at the output of the indicator 29 makes it possible to know the intensity of the current flowing through it.
- the indicator light 29 is powered by a current generator 40.
- a control module 41 controls, on the one hand, the selector 33 via a line 43 and, on the other hand, a switch 42 via a line 44.
- control module 41 contains a memory for storing the functional or non-functional state of each branch 31.
- the control signal of this module 41 conveyed on an external control line 45, is a conventional order given to a light (on /off).
- a line of record 46 allows report the state of this indicator 29 to external devices for alarm or maintenance purposes for example.
- the method of the invention also realizes a dynamic management of the redundancy of each indicator, which consists, with the aid of the selector 33, in alternately selecting the various branches 31 of this indicator with a sufficiently high scanning frequency order of a few kHz) not to be perceived by the human eye.
- the current / voltage parameters of the LED are checked. If a fault is found, the limb involved is no longer solicited and the other branches have their ignition timing changed to keep the same overall brightness at the indicator.
- the method of the invention thus avoids the total loss of the indicator. Also, even when the indicator is not lit, the method of the invention continues its dynamic test by performing a brief command of the different branches. Upon the loss of a first branch, it is possible to develop a preventive maintenance message without the pilot being informed.
- the control module 41 opens and closes the switch 42 so as to supply the light 29 with sufficiently short pulses, for example of a duration of the order of a few seconds. microseconds, and spaced so that the light 29 appears extinguished to an observer.
- Each pulse is switched successively by the selector 33 on one of the branches 31. It measures the voltage across this branch and the current flowing through it.
- the (or) branch (s) in question can (wind) be requalified as functional, the indicator emitting less light than during its nominal operation.
- Any fault detection can lead to the issuance of a signal on the report line, intended for an operator and / or any maintenance system.
- the indicator light 29, its control module 41 and the switch 42 are integrated in a single housing 50, with two supply lines 51, so as to present the appearance of an almost classic light.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Audible And Visible Signals (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Selective Calling Equipment (AREA)
- Maintenance And Management Of Digital Transmission (AREA)
- Debugging And Monitoring (AREA)
Claims (10)
- Vorrichtung zur Leuchtanzeige bezüglich des Funktionszustands eines Systems, wobei die Vorrichtung mindestens eine Anzeigeleuchte bzw. einen Sichtmelder sowie Pannenerfassungsmittel dieser Anzeigeleuchte(n) umfasst, dadurch gekennzeichnet, dass jede Anzeigeleuchte m parallele Zweige (31), die jeweils aus n Leuchtdioden (32) in Reihe bestehen, sowie Auswahlmittel (33) eines Zweigs umfasst, wobei m und n ganze Zahlen sind, wie z.B. m ≥2 und n ≥ 1.
- Vorrichtung nach Anspruch 1, wobei die m ersten Enden der Zweige miteinander verbunden sind, und ihre zweiten Enden an unterschiedlichen Eingängen der Auswahlmittel (33) verbunden sind, die in Abhängigkeit von einem Steuerbefehl C die Verbindung eines ausgewählten Zweigs (31) mit einem Ausgang der Vorrichtung (S) gestatten.
- Vorrichtung nach Anspruch 2, außerdem für jede Anzeigeleuchte umfassend:- einen Stromgenerator (40), der diese Leuchte (29) speist,- einen zwischen den Ausgang der Auswahlmittel (33) und den Eingang des Stromgenerators (40) geschalteten Unterbrecherschalter (42),- ein Steuermodul (41), welches die Auswahlmittel und den Unterbrecherschalter (42) steuert und einen Speicher enthält, der die Speicherung des Zustands jedes Zweigs (31) gestattet.
- Vorrichtung nach Anspruch 3, wobei jede Anzeigeleuchte (29), ihr Steuermodul (41) sowie ihr Unterbrecherschalter (42) in einem einzigen Gehäuse (50) integriert sind.
- Anwendung der Vorrichtung nach einem der Ansprüche 1 bis 4 auf dem Gebiet der Luftfahrt.
- Verfahren zur Steuerung einer Leuchtanzeigevorrichtung hinsichtlich des Funktionszustandes eines Systems, wobei die Vorrichtung mindestens eine Anzeigeleuchte sowie Pannenerfassungsmittel dieser Anzeigeleuchte(n) umfasst, wobei jede Anzeigeleuchte m parallele Zweige (31) umfasst, die jeweils aus n Leuchtdioden (32) in Reihe bestehen, sowie Auswahlmittel (33) eines Zweigs, wobei m und n ganze Zahlen sind, wie z.B. m ≥ 2 und n ≥ 1, und wobei das Verfahren einen automatischen Testschritt aller Anzeigeleuchten des Systems umfasst, wobei dieser Schritt die folgenden Schritte für jede Anzeigeleuchte umfasst:- wenn die Anzeigeleuchte eingeschaltet ist, wird ihre richtige Funktionsweise durch Kontrolle der verbrauchten Intensität und der an ihren Klemmen vorhandenen Spannung überprüft,- wenn die Anzeigeleuchte ausgeschaltet ist, wird sie während einiger Mikrosekunden aktiviert, so dass die Aktivierung dem menschlichen Auge verborgen bleibt, und im Verlauf dieser Aktivierung werden ihre Strom-/Spannungsparameter gemessen.
- Verfahren nach Anspruch 6, wobei im Verlauf des Schritts der dynamischen Steuerung alternierend die verschiedenen Zweige jeder Anzeigeleuchte mit einer Abtastfrequenz von einigen Kilohertz aktiviert werden, die genügend hoch ist, damit die Aktivierung dem menschlichen Auge verborgen bleibt, wobei die Strom-/Spannungsparameter bei jeder Abtastung kontrolliert werden.
- Verfahren nach Anspruch 7, wobei ein Zweig nicht mehr aktiviert wird, wenn in ihm ein Fehler festgestellt wird.
- Verfahren nach Anspruch 7, wobei, wenn alle Zweige Fehler aufweisen, aber mindestens ein Zweig verbleibt, der keinen offenen Stromkreis aufweist, dieser/diese Zweig(e) als funktionsfähig eingestuft werden.
- Verfahren nach Anspruch 7, wobei, wenn ein Fehler in mindestens einem Zweig festgestellt wird, das zyklische Einschaltverhältnis der Zweige ohne Fehler modifiziert wird, um die gleiche Gesamtleuchtkraft an der Anzeigeleuchte, von der mindestens ein Zweig fehlerhaft ist, zu erhalten.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0114445A FR2831979B1 (fr) | 2001-11-08 | 2001-11-08 | Dispositif d'information lumineuse concernant l'etat de fonctionnement d'un systeme et procede de gestion d'un tel dispositif, notamment dans le domaine avionique |
FR0114445 | 2001-11-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1315404A1 EP1315404A1 (de) | 2003-05-28 |
EP1315404B1 true EP1315404B1 (de) | 2006-03-08 |
Family
ID=8869178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02292760A Expired - Lifetime EP1315404B1 (de) | 2001-11-08 | 2002-11-06 | Lichtinformationseinrichtung zum Anzeigen des Betriebszustandes eines Systems, insbesondere für die Avionics |
Country Status (8)
Country | Link |
---|---|
US (1) | US6917164B2 (de) |
EP (1) | EP1315404B1 (de) |
JP (1) | JP4327437B2 (de) |
AT (1) | ATE320166T1 (de) |
CA (1) | CA2410841C (de) |
DE (1) | DE60209677T2 (de) |
ES (1) | ES2260398T3 (de) |
FR (1) | FR2831979B1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006018813A1 (de) * | 2006-03-29 | 2007-10-04 | Kompled Gmbh & Co. Kg | Fahrzeugleuchtenanordnung |
JP4925747B2 (ja) * | 2006-07-05 | 2012-05-09 | シーシーエス株式会社 | 光照射システム |
WO2008061301A1 (en) * | 2006-11-20 | 2008-05-29 | Lednium Technology Pty Limited | A fault detector and a fault detection process for lighting |
JP2008134288A (ja) * | 2006-11-27 | 2008-06-12 | Sharp Corp | Ledドライバ |
DE102012101363A1 (de) * | 2012-02-21 | 2013-08-22 | Hella Kgaa Hueck & Co. | Verfahren zum Betreiben einer Schaltungsanordnung mit einem Steuer- und/oder Regelungsmittel für ein Leuchtdiodenfeld |
DE102017125173B4 (de) * | 2017-10-26 | 2022-09-08 | Preh Gmbh | Verfahren zur Funktionsüberprüfung mehrerer, pulsweitenmoduliert angesteuerter Lichtquellen |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1194295B (de) * | 1962-05-21 | 1965-06-03 | Franz Baumgartner Fabrik Elek | Lichtelektrisches Kontrollsystem fuer Signallampen in Verkehrssignalanlagen |
US3719937A (en) * | 1971-02-11 | 1973-03-06 | Master Specialties Co | Failure detection circuit |
US3781853A (en) * | 1971-12-23 | 1973-12-25 | Tideland Signal Corp | Navigational light system |
US3812351A (en) * | 1972-05-25 | 1974-05-21 | Hurletron Inc | Rotary position detector machine control system |
JPS556687A (en) * | 1978-06-29 | 1980-01-18 | Handotai Kenkyu Shinkokai | Traffic use display |
US4271408A (en) * | 1978-10-17 | 1981-06-02 | Stanley Electric Co., Ltd. | Colored-light emitting display |
US4217573A (en) * | 1979-04-05 | 1980-08-12 | Norris Elwood G | Switching unit for selectively connecting together various combinations of audio subsystems |
DE3112038C2 (de) * | 1980-03-27 | 1986-07-03 | Nippondenso Co., Ltd., Kariya, Aichi | Richtungsgeberblinkschaltung für Zweiradfahrzeuge |
CA1250972A (en) * | 1985-06-28 | 1989-03-07 | Norman E. Bowman | Emergency exit sign |
US5161879A (en) * | 1991-04-10 | 1992-11-10 | Mcdermott Kevin | Flashlight for covert applications |
DE4208306A1 (de) * | 1992-03-16 | 1993-09-23 | Bernd Vogelsang | Anordnung zur anzeige mit leuchtdioden |
DE4341058C1 (de) | 1993-12-02 | 1995-04-27 | Daimler Benz Ag | Lichtsteuereinrichtung für ein Kraftfahrzeug |
KR0157936B1 (ko) * | 1995-03-04 | 1999-03-20 | 이희종 | 교통 신호 제어기의 전구 단선 검출 방법 및 장치 |
US5680098A (en) | 1995-09-27 | 1997-10-21 | Ford Motor Company | Circuit for compensating for failure of a light source in an automotive vehicle |
US5896010A (en) * | 1995-09-29 | 1999-04-20 | Ford Motor Company | System for controlling lighting in an illuminating indicating device |
JP3717006B2 (ja) | 1995-11-01 | 2005-11-16 | 矢崎総業株式会社 | ランプ断線検出装置 |
US5786682A (en) * | 1996-08-07 | 1998-07-28 | Reltec Corporation | Battery charging circuit including a current limiter which compares a reference current to a charging current to ensure operation of a load |
US5801623A (en) | 1997-06-30 | 1998-09-01 | Ford Motor Company | Method of detecting a lamp outage condition in a vehicle flasher system |
US6608453B2 (en) | 1997-08-26 | 2003-08-19 | Color Kinetics Incorporated | Methods and apparatus for controlling devices in a networked lighting system |
EP0967590A1 (de) * | 1998-06-25 | 1999-12-29 | Hewlett-Packard Company | Optische Anzeigevorrichtung mit Leuchtdioden und Steuerverfahren dafür |
DE19852351A1 (de) * | 1998-11-13 | 2000-05-18 | Hella Kg Hueck & Co | Diagnosesystem für eine LED-Leuchte in einem Kraftfahrzeug |
US6351079B1 (en) * | 1999-08-19 | 2002-02-26 | Schott Fibre Optics (Uk) Limited | Lighting control device |
NZ520794A (en) * | 2000-01-20 | 2004-04-30 | Miguel S Giacaman | Intrinsically safe traffic control system, method and apparatus optimized for inherent-polarity traffic signals |
-
2001
- 2001-11-08 FR FR0114445A patent/FR2831979B1/fr not_active Expired - Fee Related
-
2002
- 2002-10-29 JP JP2002314506A patent/JP4327437B2/ja not_active Expired - Fee Related
- 2002-11-01 CA CA2410841A patent/CA2410841C/en not_active Expired - Fee Related
- 2002-11-05 US US10/289,116 patent/US6917164B2/en not_active Expired - Lifetime
- 2002-11-06 AT AT02292760T patent/ATE320166T1/de not_active IP Right Cessation
- 2002-11-06 EP EP02292760A patent/EP1315404B1/de not_active Expired - Lifetime
- 2002-11-06 ES ES02292760T patent/ES2260398T3/es not_active Expired - Lifetime
- 2002-11-06 DE DE60209677T patent/DE60209677T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6917164B2 (en) | 2005-07-12 |
ATE320166T1 (de) | 2006-03-15 |
FR2831979A1 (fr) | 2003-05-09 |
EP1315404A1 (de) | 2003-05-28 |
CA2410841C (en) | 2012-01-10 |
JP2003223123A (ja) | 2003-08-08 |
US20030085672A1 (en) | 2003-05-08 |
JP4327437B2 (ja) | 2009-09-09 |
CA2410841A1 (en) | 2003-05-08 |
DE60209677T2 (de) | 2006-11-16 |
ES2260398T3 (es) | 2006-11-01 |
FR2831979B1 (fr) | 2004-01-30 |
DE60209677D1 (de) | 2006-05-04 |
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