EP1477951B1 - Méthode et appareil de surveillance du fonctionnement des voies de transmission radio dans un système de signalisation d'alarmes - Google Patents

Méthode et appareil de surveillance du fonctionnement des voies de transmission radio dans un système de signalisation d'alarmes Download PDF

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Publication number
EP1477951B1
EP1477951B1 EP04101551A EP04101551A EP1477951B1 EP 1477951 B1 EP1477951 B1 EP 1477951B1 EP 04101551 A EP04101551 A EP 04101551A EP 04101551 A EP04101551 A EP 04101551A EP 1477951 B1 EP1477951 B1 EP 1477951B1
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European Patent Office
Prior art keywords
participant
level
central facility
time intervals
participants
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Expired - Lifetime
Application number
EP04101551A
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German (de)
English (en)
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EP1477951A3 (fr
EP1477951A2 (fr
Inventor
Karlheinz Schreyer
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Siemens AG
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Siemens AG
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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
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/20—Calibration, including self-calibrating arrangements
    • G08B29/24—Self-calibration, e.g. compensating for environmental drift or ageing of components
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
    • 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
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
    • 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
    • G08B29/12—Checking intermittently signalling or alarm systems
    • 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
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/20—Calibration, including self-calibrating arrangements

Definitions

  • the invention relates to a method and a device for monitoring the function of radio transmission paths in a danger detection system with a control center and a plurality of subscribers, which each have a transmitting and a receiving device.
  • US 5029334 discloses a method for optimizing the data paths.
  • the aim of the present invention is therefore to ensure a reliable function monitoring of the transmission paths in a hazard detection system, but at the same time to reduce the necessary radio traffic and thus to reduce energy consumption.
  • the invention makes use of the knowledge that for the function monitoring of the transmission paths, it is not necessary to exchange data with the control panel every time. Rather, the invention is based on the consideration that a radio transmission between two points is always guaranteed if a sufficient payload field strength is available at the location of the receiver, if the level of other services or of jammers is small compared to their own received useful signal and Finally, no overlays lead to a triggering of the received signal.
  • each subscriber monitors his own environment by comparing the interference level with the last received user signal levels of partner users at short time intervals. It is therefore assumed that, as experience has shown, the transmission level of the respective partner subscriber does not change at short notice, so that the measurement of this useful signal level with the necessary transmission of routine signals by all the participants can take place at longer intervals. As a result, the radio traffic can be considerably restricted and the energy consumption can be correspondingly reduced.
  • the signal levels measured at longer intervals by the partner subscribers and possibly also by the control center are stored in each subscriber, so that they are available for the short-term comparison with the respective interference level.
  • the station forwards the fault status to one or more partners of the network in the direction of the control center. This forwarding takes place at least unidirectionally.
  • a bidirectional transmission is not necessary, but does not need to be excluded. In the presence of interferers, it may happen that only one direction of transmission fails while the other remains available. One speaks in such cases of one-sided transmission disturbances.
  • the comparison signal level relevant for the interference detection can represent an average of the respectively last level measurements; this includes a statistical evaluation of the reception level.
  • the participants in regular routine messages to the headquarters each send a list of all reachable by you partner participants and that the center then generates an error message when a participant only over a single radio path to Central has. This is to ensure that if this single path fails, there will be a gap in the transmission chain.
  • the first time intervals for measuring the interference levels are substantially shorter than the time intervals for fault reporting required in the standard (eg 100 seconds) and are preferably of the order of 1 second, while the second Time intervals for refreshing the comparison signal level can be much larger than the ge called normal value and, for example, on the order of 15 minutes.
  • FIG. 1 shows the influencing variables which can generally prevent radio transmission. Assuming that a transmitter S with a certain transmission power SL emits a signal, so the receiver E can receive this signal only when it arrives at a sufficient field strength at him. If an interferer ST is located in the vicinity of the receiver E whose interference level decreases with increasing distance, it must be ensured that the interference level in the region of the receiver E is less than the signal level of the transmitter S arriving there. In this case, a sufficient transmission power SL be ensured that despite the losses due to damping sufficient field strength arrives at the receiver E. In addition, there is the possibility of extinguishing the signal due to superpositions due to reflections and diffraction, which is indicated by the angled arrows R.
  • FIG. 2 indicates a situation in which an interferer ST is located in the vicinity of the transmitting station of a subscriber T.
  • the transmission power SL of the subscriber T and the interference power STL of the interferer ST are shown schematically, wherein the decrease in level is indicated by the attenuation with increasing distance from the respective transmitter by brighter expectant sections.
  • transmission is possible at least in the direction from the transmitter to the control center (unilateral transmission interference).
  • each participant In order to avoid overlays due to diffractions and reflections making contact with a participant impossible, each participant must be in contact with several other partner participants who act as intermediaries. In Figure 4, this constellation is indicated.
  • the subscriber T1 can communicate with the center Z directly via the route R1. If, however, this route R1 fails because the radio range is too low or because a fault occurs, the radio traffic can take an alternative route R2 or R3 via the subscriber T2 or via the subscriber T3. If the control center recognizes by appropriate routine messages that a participant no longer has sufficient alternative routes for the incident, this can be evaluated and reported as a fault.
  • the malfunction detection mechanism according to the invention in a subscriber is shown in FIG. 5 in a block diagram.
  • a noise level measuring device MRP In the receiver of the subscriber T1, there are two level measuring devices, a noise level measuring device MRP and a signal level measuring device MSP.
  • the measurement of the noise level or disturbance level via the device MRP takes place at short time intervals, for example every second, and the measured value P ST is fed to a comparison device VP.
  • the storage values from a level memory SPP which has stored in individual memories the last measured signal levels of the various partner subscribers, are fed to this comparison device.
  • level values P z are stored by the center and P T2 to P T4 by the partner subscribers T2 to T4.
  • the measured disturbance level P ST1 is compared with each one of the stored signal levels. As soon as one of the signal levels P z , P T2 , etc. is greater than the disturbance level (including a safety margin), an error signal SF is generated. This is fed to a time evaluation ZB. If the error signal SF is present for a predetermined minimum time, a fault message STM is sent to the control center.
  • the stored level values of the control center or of the partner subscribers in the level memory SPP are updated at specific time intervals by evaluating the incoming routine signals via the signal level measuring device MSP. This is done at longer intervals, for example every 15 minutes.
  • the time relationships in the fault detection according to FIG. 5 are plotted in FIG.
  • the measurement of the noise level or disturbance level P ST takes place at short intervals TA1, for example every second.
  • the query of the signal levels P z , P T2 to P T4 takes place at relatively long intervals TA2, for example every 15 minutes.
  • the fault detection time, so the Time that an error signal must be present to cause a fault message is designated as TA3. This is for example 100 seconds.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)
  • Alarm Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Claims (13)

  1. Procédé de surveillance du fonctionnement de voies de transmission radio dans un système avertisseur de danger, comprenant une centrale (Z) et une pluralité de postes (T1, T2, T3, T4) qui comportent chacun un dispositif émetteur et un dispositif récepteur, caractérisé par les étapes suivantes:
    a) auprès de chaque poste (T1 à T4), le niveau de perturbation (PST) arrivant au récepteur est mesuré à des premiers intervalles de temps courts prédéfinis (TA1) et est comparé avec au moins un niveau de signal de comparaison stocké (PZ, PT1 ... 4);
    b) chaque poste mesure, à des deuxièmes intervalles de temps prédéfinis (TA2) qui sont un multiple des premiers intervalles de temps (TA1), respectivement les niveaux de signal arrivant de la centrale (Z) et/ou d'au moins un poste partenaire (T2, T3, T4) servant de station intermédiaire vers la centrale et les niveaux de signal mesurés ou les valeurs qui en sont dérivées sont stockés en tant que niveaux de signal de comparaison (PZ, PT2 à PT4) ;
    c) dans le poste respectif (T1, T2, T3, T4) est généré un signal d'erreur (SF) lorsqu'il n'y a pas au moins un niveau de signal de comparaison qui est significativement supérieur au niveau de perturbation actuellement mesuré (PST) et
    d) un message de perturbation (STM) est généré à partir du signal d'erreur (SF) et émis en direction vers la centrale si le signal d'erreur a existé sans interruption pendant un temps minimal prédéfini (TA3) qui est un multiple du premier intervalle de temps (TA1).
  2. Procédé selon la revendication 1,
    caractérisé en ce qu'un poste (T1), avant l'émission du message de perturbation (STM), essaie de joindre, par un trafic de télégramme, la centrale (Z) resp. le poste partenaire spécifié (T2, T3, T4).
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que chaque poste (T1), à l'étape b), mesure le niveau de signal arrivant de tous les postes partenaires qui se trouvent dans la portée radio (T2, T3, T4) et stocke, pour chaque poste partenaire, un niveau de signal de comparaison (PT2, PT3, PT4) qui en est dérivé.
  4. Procédé selon l'une des revendications 1 à 3,
    caractérisé en ce que les niveaux de signal de comparaison (PZ, PT2, PT3, PT4) sont respectivement dérivés de plusieurs niveaux de signal mesurés consécutivement.
  5. Procédé selon l'une des revendications 1 à 4,
    caractérisé en ce que chaque poste (T1 à T4), y compris la centrale (Z), émet respectivement un télégramme de routine aux deuxièmes intervalles de temps prédéfinis (TA2) pour permettre une mesure de niveau à tous les postes partenaires qui se trouvent dans la portée radio.
  6. Procédé selon l'une des revendications 1 à 5,
    caractérisé en ce que les premiers intervalles de temps (TA1) selon la caractéristique a) de la revendication 1 sont plus courts et les deuxièmes intervalles de temps (TA2) selon la caractéristique b) de la revendication 1, plus longs d'un multiple que les intervalles de temps prédéfinis dans une stipulation de norme pour un affichage de perturbation.
  7. Procédé selon la revendication 6,
    caractérisé en ce que les premiers intervalles de temps (TA1) sont de l'ordre de 1 seconde et les deuxièmes intervalles de temps (TA2), de l'ordre de plus de 10 minutes.
  8. Procédé selon l'une des revendications 1 à 7,
    caractérisé en ce que chaque poste (T1, T2, T3, T4) émet respectivement, dans des messages de routine réguliers à la centrale (Z), une liste de tous les postes partenaires qu'il peut joindre et en ce que la centrale (Z) génère alors un message d'erreur lorsqu'un poste ne dispose que d'une unique voie radio vers la centrale.
  9. Procédé selon l'une des revendications 1 à 8,
    caractérisé en ce que tous les postes (T1, T2, T3, T4) sont affectés à des niveaux de communication déterminés conformément au nombre de leurs stations intermédiaires nécessaires pour une liaison vers la centrale (Z) et en ce que chaque poste vérifie quel chemin mène à la centrale avec le moins de stations intermédiaires.
  10. Dispositif de surveillance du fonctionnement de voies de transmission radio dans un système avertisseur de danger comprenant une centrale (Z) et une pluralité de postes (T1, T2, T3, T4) qui comportent chacun un dispositif émetteur et un dispositif récepteur,
    caractérisé en ce que chaque poste présente:
    - un dispositif de mesure (MRP) pour mesurer le niveau de perturbation (PST) à des premiers intervalles de temps (TA1) prédéfinis,
    - un dispositif de mémoire (SPP) pour stocker au moins un niveau de signal de comparaison (PZ, PT2, PT3, PT4),
    - un dispositif de comparaison (VP) pour comparer le niveau de perturbation (PST) respectivement mesuré avec l'au moins un niveau de signal de comparaison stocké (PZ, PT1 ... 4) et générer un signal d'erreur (SF) lorsque le niveau de perturbation (PST) est supérieur à tous les niveaux de signal de comparaison (PZ, PT2, PT3, PT4) et un dispositif de retard (ZB) qui convertit en un message de perturbation (ST) un signal d'erreur (SF) qui se maintient sur une durée de temps prédéfinie (TA3).
  11. Dispositif selon la revendication 10,
    caractérisé en ce que chaque poste comporte additionnellement un dispositif de mesure (MSP) pour mesurer les niveaux de signal de tous les postes partenaires (T2, T3, T4) qui se trouvent dans la portée radio; y compris de la centrale (Z) , à des deuxièmes intervalles de temps prédéfinis (TA2) et dériver à partir des valeurs de mesure des niveaux de signal de comparaison (PZ, PT2, PT3, PT4).
  12. Dispositif selon la revendication 10 ou 11,
    caractérisé en ce que chaque poste possède, pour chaque poste partenaire (T2, T3, T4) qui lui est affecté et se trouve dans sa portée radio, une mémoire pour un niveau de signal de comparaison affecté (PZ, PT2, PT3, PT4).
  13. Dispositif selon l'une des revendications 10 à 12,
    caractérisé en ce que au moins une partie des postes comporte une protection anti-vol qui déclenche un message dès que le poste est retiré de sa position prédéfinie.
EP04101551A 2003-05-12 2004-04-15 Méthode et appareil de surveillance du fonctionnement des voies de transmission radio dans un système de signalisation d'alarmes Expired - Lifetime EP1477951B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10321204 2003-05-12
DE10321204A DE10321204B3 (de) 2003-05-12 2003-05-12 Verfahren und Einrichtung zur Funktionsüberwachung von Funkübertragungswegen in einem Gefahrenmeldesystem

Publications (3)

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EP1477951A2 EP1477951A2 (fr) 2004-11-17
EP1477951A3 EP1477951A3 (fr) 2006-03-01
EP1477951B1 true EP1477951B1 (fr) 2006-11-02

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EP04101551A Expired - Lifetime EP1477951B1 (fr) 2003-05-12 2004-04-15 Méthode et appareil de surveillance du fonctionnement des voies de transmission radio dans un système de signalisation d'alarmes

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EP (1) EP1477951B1 (fr)
AT (1) ATE344515T1 (fr)
DE (2) DE10321204B3 (fr)
DK (1) DK1477951T3 (fr)
ES (1) ES2276221T3 (fr)
PT (1) PT1477951E (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2973544B1 (fr) 2011-03-31 2013-11-15 Finsecur Dispositif de declenchement d'alarme pour un systeme de securite
FR2973546B1 (fr) * 2011-03-31 2013-04-05 Finsecur Dispositif de declenchement d'alarme pour un systeme de securite
FR2973545B1 (fr) * 2011-03-31 2013-04-12 Finsecur Dispositif de declenchement d'alarme pour un systeme de securite et procede d'installation d'un dispositif de declenchement d'alarme

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH677300A5 (fr) * 1989-03-21 1991-04-30 Asea Brown Boveri
DE19539312A1 (de) * 1995-10-23 1997-04-24 Grundig Emv Verfahren zur Erhöhung der Übertragungssicherheit bei Funkalarmanlagen
DE19622880A1 (de) * 1996-06-07 1997-12-11 Grundig Ag Funkgesteuerte Gefahrenmeldeanlage mit unterzentralen und sicherer Datenkommunikation zwischen den einzelnen Komponenten
DE59810391D1 (de) * 1997-09-30 2004-01-22 Siemens Ag Verfahren zur Funkübertragung in einem Gefahrenmeldesystem
DE19904358B4 (de) * 1999-02-04 2005-07-07 Abb Research Ltd. Verfahren zum Datenaustausch über ein dezentrales Netzwerk
DE19952657A1 (de) * 1999-11-02 2001-05-03 Andy Barnekow Anordnung zur Signalübermittlung an und von beweglichen Objekten
DE10114313C2 (de) * 2001-03-23 2003-12-04 Siemens Gebaeudesicherheit Gmb Verfahren zur Funkübertragung in einem Gefahrenmeldesystem

Also Published As

Publication number Publication date
PT1477951E (pt) 2007-02-28
EP1477951A3 (fr) 2006-03-01
ATE344515T1 (de) 2006-11-15
EP1477951A2 (fr) 2004-11-17
ES2276221T3 (es) 2007-06-16
DE502004001876D1 (de) 2006-12-14
DK1477951T3 (da) 2007-02-19
DE10321204B3 (de) 2005-01-13

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