EP1528521A1 - System for monitoring a plurality of zones - Google Patents

System for monitoring a plurality of zones Download PDF

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Publication number
EP1528521A1
EP1528521A1 EP04292388A EP04292388A EP1528521A1 EP 1528521 A1 EP1528521 A1 EP 1528521A1 EP 04292388 A EP04292388 A EP 04292388A EP 04292388 A EP04292388 A EP 04292388A EP 1528521 A1 EP1528521 A1 EP 1528521A1
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Prior art keywords
detection
computers
computer
detection devices
zones
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EP04292388A
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German (de)
French (fr)
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EP1528521B1 (en
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Bertrand Vaysse
Pierre Lascours
Céline Virgulin
Laurent Escaich
Jean-Yves Vilain
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Airbus Operations SAS
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Airbus Operations SAS
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/16—Security signalling or alarm systems, e.g. redundant systems

Definitions

  • the present invention relates to a system for monitoring of a plurality of zones.
  • a system for monitoring of a plurality of zones is particularly suitable for being implemented for centralized detection in a plurality of zones, in particular on board an aircraft, so that, subsequently, the invention will be more specifically described in connection with such an application.
  • the aircraft are equipped with a centralized system of monitoring said zones comprising electrical detection devices respectively arranged in said areas, as well as means for processing the detection signals emitted by said devices detecting means and alarm means actuated by said processing means, said processing and alarm means being arranged in the vicinity or in the cockpit, that is, at a remote location said detection devices.
  • Detection devices include fire detectors known types, for example pneumatic or thermoresistive (more particularly negative temperature coefficient), arranged in pairs to detection redundancy purposes.
  • each detection device comprises only two output channels and, in each pair of detectors, one of said detectors is connected to one of said channels while the other detector is connected to the other channel.
  • said output channels are independent of each other and in case of a plurality n of detector pairs in a detection device (n being an integer different from 0), there are n detectors connected in parallel and connected to an output channel and n detectors, also mounted in parallel, but connected to the other exit.
  • said processing means are constituted by a set of individual calculators, each of which is associated with a monitored area and receives the information conveyed by the two channels independent of the detection device disposed in said zone. So, said calculator associated with a zone can constantly compare the information it receives from said two independent channels, and in particular when one of the channels carries fire information in the area considered, said associated computer can verify this information by comparing with those transmitted through the other channel and determine whether it should not transmitting an alarm signal to said alarm means.
  • each calculator of the processing means comprises two elementary calculators independent (cards) electrically isolated from each other, which in complicates the structure and increases the cost.
  • the object of the present invention is to remedy these drawbacks and it relates to a monitoring system architecture allowing to significantly reduce the number of said elementary calculators, while providing the same security of detection.
  • each first and second calculator can be connected to several detection devices and that links exist between said first and second calculators, the number of calculators means for processing the detection signals can be reduced.
  • each first and second calculator is connected to only one output channel of a sensing device and is isolated from the other channel of out of the latter by said electrically isolated connections, its structure can be simple and not double with internal electrical insulation, as in the prior art. So if the number of zones to monitor is equal to six as in the previous example, the number elementary calculators of the signal processing means of detection can be reduced to four, instead of the previous twelve.
  • Said electrically insulating connections may be hertzian, magnetic or other. However, preferably, they are optical and can be materialized by optical fibers and components Optoelectronic. They can be discrete or digital.
  • no first (or second) calculator is connected exactly to the same set of detection devices than a second (or first) calculator.
  • each first (or second) computer can communicate, through said electrically insulating links, with each two second (or first) calculators.
  • the system according to the present invention is intended the detection of fire in non-pressurized areas of an aircraft four-engine, it is advantageous that none of said first and second calculators is connected to more than two associated detection devices each to an engine. Thus, a simple malfunction of the system can not affect more than one engine.
  • Figure 1 illustrates an application of the monitoring system according to the invention to fire detection in non-pressurized areas of a plane.
  • Figure 2 shows the block diagram of a detection system fire known for the aircraft of Figure 1.
  • FIG. 3 shows the block diagram of the detection system in accordance with the present invention for the aircraft of FIG.
  • each of these six zones ZM1, ZM2, ZM3, ZM4, ZAP and ZLG is arranged a corresponding fire detection device DZM1, DZM2, DZM3, DZM4, DZAP and DZLG, respectively.
  • Each fire detection device DZM1 to DZM4, DZAP and DZLG has a first and a second output channel respectively references ZM1A and ZM1B; ZM2A and ZM2B; ZM3A and ZM3B; ZM4A and ZM4B; ZAPA and ZAPB; and ZLGA and ZLGB.
  • each of said fire detection devices is constituted pairs of fire detectors, each having a dA detector and a dB detector jointly monitoring the same location of the area corresponding, for redundancy purposes.
  • each zone ZM1 to ZM4 ZAP and ZLG is associated with calculator FDUM1 to FDUM4, FDUAP and FDULG, respectively, connected to the first and second channels of the detection device DZM1 to DZM4, DZAP and corresponding DZLG.
  • each of these individual calculators receives the state of each of the detectors dA and dB of the detection device associated and determines, by comparison of said states, whether there exists or no fire in the corresponding area.
  • said calculators FDUM1 to FDUM4, FDUAP and FDULG must have two electrically insulated parts, as is suggested in Figure 2 by the dashed score lines.
  • said calculators FDUM1 to FDUM4, FDUAP and FDULG After processing the information received on their two channels, said calculators FDUM1 to FDUM4, FDUAP and FDULG transmit the result of their monitoring to a FWS alarm system.
  • detectors DZM1 through DZM4, DZAP and DZLG are located in the areas they monitor, calculators FDUM1 to FDUM4, FDUA and FDLG and the FWS alarm system are located in the BA avionics bay, in the vicinity or in the cockpit (see Figure 1). There are therefore L lines of great length (not shown in Figure 1 for the sake of clarity) traveling the aircraft 1 between said detectors and said calculators.
  • the FDU calculation unit comprises four computers C1A, C2B, C3A and C4B, for example under the form of electronic cards.
  • each of the computers C1 A, C2B, C3A and C4B receiving directly a information of one of the channels of one of the detectors DZM1 to DZM4, DZAP, DZLG can bring this information closer to the one conveyed by the other channel said detector and received by another computer to determine whether or not to send an alarm signal to the alarm system FWS and / or any other local alarm device (not shown), by example that arranged on the ceiling of the cockpit.

Abstract

The system has a detection signal processing unit (FDU) comprising controllers (C1A, C3A) connected to channels (ZM1A-ZM4A, ZAPA, ZLGA) of detection devices, and controllers (C2B, C4B) connected to channels (ZM1B-ZM4B, ZAPB, ZLGB) of the detection devices. Electrically insulating connections (3) are provided between former and latter controllers such that the controllers connected to same detection device communicates between them.

Description

La présente invention concerne un système pour la surveillance d'une pluralité de zones. Quoique non exclusivement, un tel système est tout particulièrement approprié à être mis en oeuvre pour la détection centralisée de feu dans une pluralité de zones, notamment à bord d'un aéronef, de sorte que, par la suite, l'invention sera plus spécialement décrite en rapport avec une telle application.The present invention relates to a system for monitoring of a plurality of zones. Although not exclusively, such a system is particularly suitable for being implemented for centralized detection in a plurality of zones, in particular on board an aircraft, so that, subsequently, the invention will be more specifically described in connection with such an application.

On sait qu'il est particulièrement important que l'équipage d'un aéronef soit prévenu au plus tôt d'un feu se déclarant à bord, notamment dans des zones non pressurisées de l'aéronef, éloignées les unes des autres, telles que les moteurs portés par les ailes, la case de train d'atterrissage principal disposée dans la partie intermédiaire du fuselage ou la case de l'unité de puissance auxiliaire prévue dans la partie arrière dudit fuselage.We know that it is particularly important that the crew of a aircraft be notified as soon as possible of a fire on board, including in non-pressurized areas of the aircraft, distant from each other, such as the engines worn by the wings, the box of landing gear main body arranged in the middle part of the fuselage or of the auxiliary power unit provided in the rear part of said fuselage.

A cet effet, les aéronefs sont équipés d'un système centralisé de surveillance desdites zones comportant des dispositifs électriques de détection respectivement disposés dans lesdites zones, ainsi que des moyens de traitement des signaux de détection émis par lesdits dispositifs de détection et des moyens d'alarme actionnés par lesdits moyens de traitement, lesdits moyens de traitement et d'alarme étant disposés au voisinage ou dans la cabine de pilotage, c'est-à-dire à un emplacement éloigné desdits dispositifs de détection.For this purpose, the aircraft are equipped with a centralized system of monitoring said zones comprising electrical detection devices respectively arranged in said areas, as well as means for processing the detection signals emitted by said devices detecting means and alarm means actuated by said processing means, said processing and alarm means being arranged in the vicinity or in the cockpit, that is, at a remote location said detection devices.

Les dispositifs de détection comportent des détecteurs de feu de types connus, par exemple pneumatiques ou thermorésistifs (plus particulièrement à coefficient de température négatif), disposés par paires à des fins de redondance de détection. Par ailleurs, pour limiter le nombre des liaisons entre les dispositifs de détection et les moyens de traitement (et donc gagner de la masse en conducteurs) et limiter également le nombre desdits moyens de traitement, chaque dispositif de détection ne comporte que deux canaux de sortie et, dans chaque paire de détecteurs, l'un desdits détecteurs est relié à l'un desdits canaux tandis que l'autre détecteur est relié à l'autre canal. Ainsi, lesdits canaux de sortie sont indépendants l'un de l'autre et en cas d'une pluralité n de paires de détecteurs dans un dispositif de détection (n étant un nombre entier différent de 0), il y a n détecteurs montés en parallèle et reliés à un canal de sortie et n détecteurs, également montés en parallèle, mais reliés à l'autre canal de sortie.Detection devices include fire detectors known types, for example pneumatic or thermoresistive (more particularly negative temperature coefficient), arranged in pairs to detection redundancy purposes. In addition, to limit the number links between the detection devices and the processing means (and therefore gain mass in drivers) and also limit the number said processing means, each detection device comprises only two output channels and, in each pair of detectors, one of said detectors is connected to one of said channels while the other detector is connected to the other channel. Thus, said output channels are independent of each other and in case of a plurality n of detector pairs in a detection device (n being an integer different from 0), there are n detectors connected in parallel and connected to an output channel and n detectors, also mounted in parallel, but connected to the other exit.

Par ailleurs, lesdits moyens de traitement sont constitués par un ensemble de calculateurs individuels, dont chacun d'eux est associé à une zone surveillée et reçoit les informations véhiculées par les deux canaux indépendants du dispositif de détection disposé dans ladite zone. Ainsi, ledit calculateur associé à une zone peut en permanence comparer les informations qu'il reçoit desdits deux canaux indépendants, et notamment lorsque l'un des canaux véhicule des informations de feu dans la zone considérée, ledit calculateur associé peut vérifier ces informations en les comparant à celles transmises par l'autre canal et déterminer s'il doit ou non transmettre un signal d'alarme auxdits moyens d'alarme.Moreover, said processing means are constituted by a set of individual calculators, each of which is associated with a monitored area and receives the information conveyed by the two channels independent of the detection device disposed in said zone. So, said calculator associated with a zone can constantly compare the information it receives from said two independent channels, and in particular when one of the channels carries fire information in the area considered, said associated computer can verify this information by comparing with those transmitted through the other channel and determine whether it should not transmitting an alarm signal to said alarm means.

On remarquera qu'un tel fonctionnement nécessite que chaque calculateur des moyens de traitement comporte deux calculateurs élémentaires indépendants (cartes) électriquement isolés l'un de l'autre, ce qui en complique la structure et en augmente le coût.It should be noted that such an operation requires that each calculator of the processing means comprises two elementary calculators independent (cards) electrically isolated from each other, which in complicates the structure and increases the cost.

Par ailleurs, ces systèmes de surveillance connus sont désavantageux en ce qui concerne la masse et les coûts, puisqu'ils nécessitent un calculateur (double) par zone surveillée. Ainsi, si le nombre de zones surveillées est égal à six, on doit prévoir douze calculateurs élémentaires. Moreover, these known surveillance systems are disadvantageous as regards mass and costs, since they require calculator (double) per supervised area. So, if the number of monitored areas is equal to six, we must provide twelve elementary calculators.

La présente invention a pour objet de remédier à ces inconvénients et elle concerne une architecture de système de surveillance permettant de réduire de façon significative le nombre desdits calculateurs élémentaires, tout en assurant la même sécurité de détection.The object of the present invention is to remedy these drawbacks and it relates to a monitoring system architecture allowing to significantly reduce the number of said elementary calculators, while providing the same security of detection.

A cette fin, selon l'invention, le système pour la surveillance d'une pluralité de zones, comportant :

  • des dispositifs de détection, dont chacun d'eux est disposé dans l'une desdites zones à surveiller et comporte un premier et un second canal de sortie, chaque dispositif de détection comportant au moins une paire de détecteurs associés à des fins de redondance de détection, un détecteur de chaque paire étant relié au premier canal de sortie correspondant alors que l'autre détecteur de ladite paire est relié au second canal de sortie dudit dispositif de détection ;
  • des moyens de traitement des signaux de détection émis par lesdits dispositifs de détection ; et
  • des moyens d'alarme actionnés par lesdits moyens de traitement des signaux de détection,
est remarquable :
  • en ce que lesdits moyens de traitement des signaux de détection comportent :
    • des premiers calculateurs dont chacun d'eux est relié à des premiers canaux de dispositifs de détection, de façon que chaque premier canal soit relié une fois et une seule à un premier calculateur, et
    • des seconds calculateurs dont chacun d'eux est relié à des seconds canaux de dispositifs de détection, de façon que chaque second canal soit relié une fois et une seule à un second calculateur ; et
  • en ce que des liaisons électriquement isolantes sont prévues entre lesdits premiers et seconds calculateurs, de façon qu'un premier calculateur et un second calculateur reliés à un même dispositif de détection puissent communiquer entre eux.
For this purpose, according to the invention, the system for monitoring a plurality of zones, comprising:
  • detection devices, each of which is arranged in one of said zones to be monitored and comprises a first and a second output channel, each detection device comprising at least one pair of associated detectors for detection redundancy purposes a detector of each pair being connected to the corresponding first output channel while the other detector of said pair is connected to the second output channel of said detection device;
  • means for processing the detection signals emitted by said detection devices; and
  • alarm means actuated by said detection signal processing means,
is remarkable:
  • in that said detection signal processing means comprises:
    • first computers each of which is connected to first channels of detection devices, so that each first channel is connected once and only one to a first computer, and
    • second computers each of which is connected to second channels of detection devices, so that each second channel is connected once and only one to a second computer; and
  • in that electrically insulating connections are provided between said first and second computers, so that a first computer and a second computer connected to the same detection device can communicate with each other.

Ainsi, grâce au fait que chaque premier et second calculateur peut être relié à plusieurs dispositifs de détection et que des liaisons existent entre lesdits premiers et seconds calculateurs, le nombre des calculateurs des moyens de traitement des signaux de détection peut être réduit. De plus, puisque chaque premier et second calculateur n'est relié qu'à un seul canal de sortie d'un dispositif de détection et est isolé de l'autre canal de sortie de ce dernier par lesdites liaisons électriquement isolées, sa structure peut être simple et non pas double avec isolation électrique interne, comme dans la technique antérieure. C'est ainsi que si le nombre de zones à surveiller est égale à six comme dans l'exemple précédent, le nombre des calculateurs élémentaires des moyens de traitement des signaux de détection peut être ramené à quatre, au lieu des douze nécessaires antérieurement.Thus, thanks to the fact that each first and second calculator can be connected to several detection devices and that links exist between said first and second calculators, the number of calculators means for processing the detection signals can be reduced. Of more, since each first and second calculator is connected to only one output channel of a sensing device and is isolated from the other channel of out of the latter by said electrically isolated connections, its structure can be simple and not double with internal electrical insulation, as in the prior art. So if the number of zones to monitor is equal to six as in the previous example, the number elementary calculators of the signal processing means of detection can be reduced to four, instead of the previous twelve.

Lesdites liaisons électriquement isolantes peuvent être hertziennes, magnétiques ou autres. Cependant, de préférence, elles sont optiques et peuvent être matérialisées par des fibres optiques et des composants optoélectroniques. Elles peuvent être discrètes ou digitales.Said electrically insulating connections may be hertzian, magnetic or other. However, preferably, they are optical and can be materialized by optical fibers and components Optoelectronic. They can be discrete or digital.

De préférence, à des fins de sécurité et pour permettre des communications entre chaque premier (ou second) calculateur et au moins deux seconds (ou premiers) calculateurs, aucun premier (ou second) calculateur n'est relié exactement au même ensemble de dispositifs de détection qu'un second (ou premier) calculateur.Preferably, for security purposes and to enable communications between each first (or second) calculator and at least two seconds (or first) calculators, no first (or second) calculator is connected exactly to the same set of detection devices than a second (or first) calculator.

Dans le cas particulier où le nombre de zones à surveiller est égal à six, le système de surveillance conforme à la présente invention peut comporter :

  • deux premiers calculateurs, chacun relié à trois dispositifs de détection ; et
  • deux seconds calculateurs, dont chacun d'eux est également relié à trois dispositifs de détection.
In the particular case where the number of zones to be monitored is equal to six, the monitoring system according to the present invention may comprise:
  • first two computers, each connected to three detection devices; and
  • two second computers, each of which is also connected to three detection devices.

Ainsi, chaque premier (ou second) calculateur peut communiquer, par l'intermédiaire desdites liaisons électriquement isolantes, avec chacun des deux seconds (ou premiers) calculateurs.Thus, each first (or second) computer can communicate, through said electrically insulating links, with each two second (or first) calculators.

Si, de plus, le système conforme à la présente invention est destiné à la détection de feu dans des zones non pressurisées d'un aéronef quadrimoteur, il est avantageux qu'aucun desdits premiers et seconds calculateurs ne soit relié à plus de deux dispositifs de détection associés chacun à un moteur. Ainsi, une simple faute de fonctionnement du système ne peut affecter plus d'un moteur.If, moreover, the system according to the present invention is intended the detection of fire in non-pressurized areas of an aircraft four-engine, it is advantageous that none of said first and second calculators is connected to more than two associated detection devices each to an engine. Thus, a simple malfunction of the system can not affect more than one engine.

Les figures du dessin annexé feront bien comprendre comment l'invention peut être réalisée. Sur ces figures, des références identiques désignent des éléments semblables.The figures of the annexed drawing will make clear how the invention can be realized. In these figures, identical references designate similar elements.

La figure 1 illustre une application du système de surveillance selon l'invention à la détection de feu dans des zones non pressurisées d'un avion.Figure 1 illustrates an application of the monitoring system according to the invention to fire detection in non-pressurized areas of a plane.

La figure 2 montre le schéma synoptique d'un système de détection de feu connu pour l'avion de la figure 1.Figure 2 shows the block diagram of a detection system fire known for the aircraft of Figure 1.

La figure 3 montre le schéma synoptique du système de détection de feu conforme à la présente invention pour l'avion de la figure 1.Figure 3 shows the block diagram of the detection system in accordance with the present invention for the aircraft of FIG.

L'avion quadrimoteur 1, représenté schématiquement sur la figure 1, comporte six zones non pressurisées dans lesquelles il est important de pouvoir détecter un feu. Il s'agit :

  • des quatre zones ZM1, ZM2, ZM3 et ZM4 correspondant respectivement aux quatre moteurs M1, M2, M3 et M4 ;
  • de la zone ZAP correspondant à l'emplacement de la source de puissance auxiliaire APU ; et
  • de la zone ZLG correspondant à la case du train d'atterrissage principal LG.
The four-engine aircraft 1, shown schematically in FIG. 1, comprises six non-pressurized zones in which it is important to be able to detect a fire. It's about :
  • four zones ZM1, ZM2, ZM3 and ZM4 respectively corresponding to the four motors M1, M2, M3 and M4;
  • the ZAP zone corresponding to the location of the APU auxiliary power source; and
  • of the ZLG zone corresponding to the box of the LG main landing gear.

Dans chacune de ces six zones ZM1, ZM2, ZM3, ZM4, ZAP et ZLG est disposé un dispositif de détection du feu correspondant DZM1, DZM2, DZM3, DZM4, DZAP et DZLG, respectivement.In each of these six zones ZM1, ZM2, ZM3, ZM4, ZAP and ZLG is arranged a corresponding fire detection device DZM1, DZM2, DZM3, DZM4, DZAP and DZLG, respectively.

Chaque dispositif de détection de feu DZM1 à DZM4, DZAP et DZLG comporte un premier et un second canal de sortie portant respectivement les références ZM1A et ZM1B; ZM2A et ZM2B ; ZM3A et ZM3B ; ZM4A et ZM4B ; ZAPA et ZAPB ; et ZLGA et ZLGB.Each fire detection device DZM1 to DZM4, DZAP and DZLG has a first and a second output channel respectively references ZM1A and ZM1B; ZM2A and ZM2B; ZM3A and ZM3B; ZM4A and ZM4B; ZAPA and ZAPB; and ZLGA and ZLGB.

De plus, chacun desdits dispositifs de détection de feu est constitué de paires de détecteurs de feu, comportant chacune un détecteur dA et un détecteur dB surveillant ensemble le même emplacement de la zone correspondante, à des fins de redondance de détection.In addition, each of said fire detection devices is constituted pairs of fire detectors, each having a dA detector and a dB detector jointly monitoring the same location of the area corresponding, for redundancy purposes.

Dans chacun des six dispositifs de détection DZM1 à DZM4, DZAP et DZLG :

  • tous les détecteurs dA sont reliés en parallèle sur le premier canal ZM1A à ZM4A, ZAPA ou ZLGA correspondant ; et
  • tous les détecteurs dB sont reliés en parallèle sur le second canal ZM1B à ZM4B, ZAPB ou ZLGB correspondant.
In each of the six detection devices DZM1 to DZM4, DZAP and DZLG:
  • all the detectors dA are connected in parallel on the first channel ZM1A to ZM4A, ZAPA or ZLGA corresponding; and
  • all dB detectors are connected in parallel on the second channel ZM1B to ZM4B, ZAPB or ZLGB corresponding.

Par ailleurs, à chaque zone ZM1 à ZM4, ZAP et ZLG est associé un calculateur FDUM1 à FDUM4, FDUAP et FDULG, respectivement, relié au premier et au second canal du dispositif de détection DZM1 à DZM4, DZAP et DZLG correspondant. Ainsi, chacun de ces calculateurs individuels reçoit l'état de chacun des détecteurs dA et dB du dispositif de détection associé et détermine, par comparaison desdits états, s'il existe ou non un feu dans la zone correspondante. On remarquera que, pour traiter de façon indépendante les informations qu'ils reçoivent desdits premier et second canaux, lesdits calculateurs FDUM1 à FDUM4, FDUAP et FDULG doivent présenter deux parties électriquement isolées, comme cela est suggéré sur la figure 2 par les lignes de partition en pointillés.Furthermore, for each zone ZM1 to ZM4, ZAP and ZLG is associated with calculator FDUM1 to FDUM4, FDUAP and FDULG, respectively, connected to the first and second channels of the detection device DZM1 to DZM4, DZAP and corresponding DZLG. So, each of these individual calculators receives the state of each of the detectors dA and dB of the detection device associated and determines, by comparison of said states, whether there exists or no fire in the corresponding area. It will be noted that, to treat independently the information they receive from the said first and second channels, said calculators FDUM1 to FDUM4, FDUAP and FDULG must have two electrically insulated parts, as is suggested in Figure 2 by the dashed score lines.

Après traitement des informations reçues sur leurs deux canaux, lesdits calculateurs FDUM1 à FDUM4, FDUAP et FDULG transmettent le résultat de leur surveillance à un système d'alarme FWS.After processing the information received on their two channels, said calculators FDUM1 to FDUM4, FDUAP and FDULG transmit the result of their monitoring to a FWS alarm system.

On notera que, alors que les détecteurs DZM1 à DZM4, DZAP et DZLG sont disposés dans les zones qu'ils surveillent, les calculateurs FDUM1 à FDUM4, FDUA et FDLG et le système d'alarme FWS se trouvent dans la baie avionique BA, au voisinage ou dans la cabine de pilotage (voir la figure 1). Il existe donc des lignes L de grande longueur (non représentées sur la figure 1 à des fins de clarté) parcourant l'avion 1 entre lesdits détecteurs et lesdits calculateurs.Note that while the detectors DZM1 through DZM4, DZAP and DZLG are located in the areas they monitor, calculators FDUM1 to FDUM4, FDUA and FDLG and the FWS alarm system are located in the BA avionics bay, in the vicinity or in the cockpit (see Figure 1). There are therefore L lines of great length (not shown in Figure 1 for the sake of clarity) traveling the aircraft 1 between said detectors and said calculators.

Dans le système conforme à la présente invention et représenté sur la figure 3, on retrouve tous les éléments décrits ci-dessus à propos du système connu de la figure 2, à l'exception du fait que les calculateurs individuels FDUM1 à FDUM4, FDUAP et FDULG sont remplacés par une unité de calcul FDU.In the system according to the present invention and shown in Figure 3, we find all the elements described above about the known system of Figure 2, except that the calculators FDUM1 to FDUM4, FDUAP and FDULG are replaced by a FDU calculation unit.

A l'intérieur d'un boítier 2, l'unité de calcul FDU comporte quatre calculateurs C1A, C2B, C3A et C4B, se présentant par exemple sous la forme de cartes électroniques.Inside a housing 2, the FDU calculation unit comprises four computers C1A, C2B, C3A and C4B, for example under the form of electronic cards.

Comme on peut le voir sur la figure 3 :

  • le calculateur C 1 A est relié aux premiers canaux ZM1A, ZM4A et ZAPA des détecteurs DZM1, DZM4 et DZAP, respectivement ;
  • le calculateur C2B est relié aux seconds canaux ZM1 B, ZM2B et ZAPB des détecteurs DZM 1, DZM2 et DZAP, respectivement ;
  • le calculateur C3A est relié aux premiers canaux ZM2A, ZM3A et ZLGA des détecteurs DZM2, DZM3 et DZLG, respectivement ; et
  • le calculateur C4B est relié aux seconds canaux ZM3B, ZM4B et ZLGB des détecteurs DZM3, DZM4 et DZLG, respectivement.
As can be seen in Figure 3:
  • the computer C 1 A is connected to the first channels ZM1A, ZM4A and ZAPA detectors DZM1, DZM4 and DZAP, respectively;
  • the computer C2B is connected to the second channels ZM1 B, ZM2B and ZAPB detectors DZM 1, DZM2 and DZAP, respectively;
  • the computer C3A is connected to the first channels ZM2A, ZM3A and ZLGA detectors DZM2, DZM3 and DZLG, respectively; and
  • the calculator C4B is connected to the second channels ZM3B, ZM4B and ZLGB detectors DZM3, DZM4 and DZLG, respectively.

Par ailleurs, par des liaisons optiques électriquement isolées 3 :

  • le calculateur C1A peut communiquer avec les calculateurs C2B et C4B ;
  • le calculateur C2B peut communiquer avec les calculateurs C1A et C3A ;
  • le calculateur C3A peut communiquer avec les calculateurs C2B et C4B ; et
  • le calculateur C4B peut communiquer avec les calculateurs C1A et C3A.
Moreover, by electrically isolated optical links 3:
  • the C1A calculator can communicate with computers C2B and C4B;
  • the calculator C2B can communicate with computers C1A and C3A;
  • the computer C3A can communicate with computers C2B and C4B; and
  • the calculator C4B can communicate with computers C1A and C3A.

Les liaisons optiques 3 peuvent être réalisées par des liens optoélectroniques ou par des fibres optiques, associés à des émetteurs et à des récepteurs optoélectroniques 4, 5, en liaison avec les calculateurs C1 A, C2B, C3A et C4B.The optical links 3 can be made by links optoelectronic or optical fibers, associated with transmitters and to optoelectronic receivers 4, 5, in conjunction with the computers C1 A, C2B, C3A and C4B.

On comprendra aisément qu'ainsi, grâce aux liaisons optiques 3, chacun des calculateurs C1 A, C2B, C3A et C4B recevant directement une information d'un des canaux d'un des détecteurs DZM1 à DZM4, DZAP, DZLG peut rapprocher cette information de celle véhiculée par l'autre canal dudit détecteur et reçue par un autre calculateur, afin de déterminer s'il y a lieu ou non d'adresser un signal d'alarme au système d'alarme FWS et/ou à tout autre dispositif d'alarme locale (non représenté), par exemple celui disposé au plafond de la cabine de pilotage.It will be easily understood that, thanks to the optical links 3, each of the computers C1 A, C2B, C3A and C4B receiving directly a information of one of the channels of one of the detectors DZM1 to DZM4, DZAP, DZLG can bring this information closer to the one conveyed by the other channel said detector and received by another computer to determine whether or not to send an alarm signal to the alarm system FWS and / or any other local alarm device (not shown), by example that arranged on the ceiling of the cockpit.

Claims (6)

Système pour la surveillance d'une pluralité de zones (ZM1 à ZM4, ZAP, ZLG), comportant : des dispositifs de détection (DZM1 à DZM4, DZAP, DZLG), dont chacun d'eux est disposé dans l'une desdites zones à surveiller et comporte un premier (ZM1A à ZM4A, ZAPA, ZLGA) et un second (ZM1B à ZM4B, ZAPB, ZLGB) canal de sortie, chaque dispositif de détection comportant au moins une paire de détecteurs (dA, dB) associés à des fins de redondance de détection, un détecteur (dA) de chaque paire étant relié au premier canal de sortie correspondant alors que l'autre détecteur (dB) de ladite paire est relié au second canal de sortie dudit dispositif de détection ; des moyens de traitement (FDU) des signaux de détection émis par lesdits dispositifs de détection ; et des moyens d'alarme (FWS) actionnés par lesdits moyens de traitement des signaux de détection, caractérisé : en ce que lesdits moyens de traitement des signaux de détection (FDU) comportent : des premiers calculateurs (C1A, C3A) dont chacun d'eux est relié à des premiers canaux de dispositifs de détection, de façon que chaque premier canal soit relié une fois et une seule à un premier calculateur, et des seconds calculateurs (C2B, C4B) dont chacun d'eux est relié à des seconds canaux de dispositifs de détection, de façon que chaque second canal soit relié une fois et une seule à un second calculateur ; et en ce que des liaisons électriquement isolantes (3) sont prévues entre lesdits premiers (C1A, C2A) et seconds (C2B, C4B) calculateurs, de façon qu'un premier calculateur et un second calculateur reliés à un même dispositif de détection puissent communiquer entre eux. System for monitoring a plurality of zones (ZM1 to ZM4, ZAP, ZLG), comprising: detection devices (DZM1 to DZM4, DZAP, DZLG) each of which is disposed in one of said areas to be monitored and comprises a first one (ZM1A to ZM4A, ZAPA, ZLGA) and a second one (ZM1B to ZM4B, ZAPB, ZLGB), each detection device having at least one pair of detectors (dA, dB) associated for detection redundancy purposes, a detector (dA) of each pair being connected to the corresponding first output channel then that the other detector (dB) of said pair is connected to the second output channel of said detection device; processing means (FDU) of the detection signals emitted by said detection devices; and alarm means (FWS) actuated by said detection signal processing means, characterized in that said detection signal processing means (FDU) comprises: first computers (C1A, C3A) each of which is connected to first channels of detection devices, so that each first channel is connected once and only one to a first computer, and second computers (C2B, C4B) each of which is connected to second channels of detection devices, so that each second channel is connected once and only one to a second computer; and in that electrically insulating links (3) are provided between said first (C1A, C2A) and second (C2B, C4B) computers, so that a first computer and a second computer connected to the same detection device can communicate between them. Système selon la revendication 1,
caractérisé en ce que lesdites liaisons électriquement isolantes (3) sont optiques.System according to claim 1,
characterized in that said electrically insulating links (3) are optical. Système selon l'une des revendications 1 ou 2,
caractérisé en ce qu'aucun premier (ou second) calculateur n'est relié exactement au même ensemble de dispositifs de détection qu'un second (ou premier) calculateur.System according to one of claims 1 or 2,
characterized in that no first (or second) computer is connected exactly to the same set of detection devices as a second (or first) computer. Système selon l'une des revendications 1 à 3, pour la surveillance de six zones,
caractérisé en ce qu'il comporte : deux premiers calculateurs (C1A, C3A), chacun relié à trois dispositifs de détection ; et deux seconds calculateurs (C2B, C4B), dont chacun d'eux est également relié à trois dispositifs de détection. System according to one of Claims 1 to 3, for monitoring six zones,
characterized in that it comprises: first two computers (C1A, C3A), each connected to three detection devices; and two second computers (C2B, C4B), each of which is also connected to three detection devices. Système selon les revendications 3 et 4,
caractérisé en ce que chaque premier (ou second) calculateur communique, par l'intermédiaire desdites liaisons électriquement isolantes (3), avec chacun des deux seconds (ou premiers) calculateurs.System according to claims 3 and 4,
characterized in that each first (or second) computer communicates, via said electrically insulating links (3), with each of the two second (or first) computers. Système selon l'une des revendications 1 à 5, destiné à la détection de feu dans des zones non pressurisées d'un aéronef quadrimoteur (1 ),
caractérisé en ce qu'aucun desdits premiers et seconds calculateurs n'est relié à plus de deux dispositifs de détection (DZM1 à DZM4) associés chacun à un moteur.System according to one of claims 1 to 5, for the detection of fire in non-pressurized zones of a four-engine aircraft (1),
characterized in that none of said first and second computers is connected to more than two detection devices (DZM1 to DZM4) each associated with a motor.
EP04292388A 2003-11-03 2004-10-08 System for monitoring a plurality of zones Not-in-force EP1528521B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0312853 2003-11-03
FR0312853A FR2861881B1 (en) 2003-11-03 2003-11-03 SYSTEM FOR MONITORING A PLURALITY OF ZONES

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EP1528521A1 true EP1528521A1 (en) 2005-05-04
EP1528521B1 EP1528521B1 (en) 2009-09-02

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EP (1) EP1528521B1 (en)
AT (1) ATE441912T1 (en)
CA (1) CA2482497C (en)
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FR (1) FR2861881B1 (en)

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CN102176269A (en) * 2011-02-15 2011-09-07 中国航空工业集团公司西安飞机设计研究所 Alarm logical designing method for airplane engine cabin fire alarm detecting system
CA2901900C (en) 2013-03-06 2021-09-14 Anthony EL HADDAD Interface between fire suppressant conduit and cargo compartment of an aircraft

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US4195286A (en) * 1978-01-06 1980-03-25 American District Telegraph Company Alarm system having improved false alarm rate and detection reliability
US4305556A (en) * 1978-06-10 1981-12-15 Westinghouse Brake & Signal Co. Ltd. Railway control signal dynamic output interlocking systems
US4279395A (en) * 1978-12-21 1981-07-21 Wabco Westinghouse Compagnia Italiana Segnali S.P.A. Speed control apparatus for railroad trains
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US4641243A (en) * 1983-06-28 1987-02-03 Siemens Aktiengesellschaft Computer-controlled interlocking system for a railway installation

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CA2482497C (en) 2012-09-25
CA2482497A1 (en) 2005-05-03
FR2861881B1 (en) 2006-01-20
FR2861881A1 (en) 2005-05-06
DE602004022906D1 (en) 2009-10-15
ATE441912T1 (en) 2009-09-15
US20050168335A1 (en) 2005-08-04
US7161499B2 (en) 2007-01-09
EP1528521B1 (en) 2009-09-02

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