EP0934645A1 - Procede pour surveiller un objet au moyen d'un reseau numerique de donnees comportant une pluralite de centrales d'alarme - Google Patents

Procede pour surveiller un objet au moyen d'un reseau numerique de donnees comportant une pluralite de centrales d'alarme

Info

Publication number
EP0934645A1
EP0934645A1 EP97951234A EP97951234A EP0934645A1 EP 0934645 A1 EP0934645 A1 EP 0934645A1 EP 97951234 A EP97951234 A EP 97951234A EP 97951234 A EP97951234 A EP 97951234A EP 0934645 A1 EP0934645 A1 EP 0934645A1
Authority
EP
European Patent Office
Prior art keywords
alarm
center
detection unit
channel
network
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.)
Withdrawn
Application number
EP97951234A
Other languages
German (de)
English (en)
Inventor
Hans-Peter Hellemann
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.)
HELLEMANN HANS PETER
Original Assignee
HELLEMANN HANS PETER
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
Priority claimed from DE1996154722 external-priority patent/DE19654722C1/de
Application filed by HELLEMANN HANS PETER filed Critical HELLEMANN HANS PETER
Publication of EP0934645A1 publication Critical patent/EP0934645A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems

Definitions

  • the present invention relates to a method for monitoring an object with a decentralized alarm detection unit assigned to the object and with an alarm center, which can be connected to one another via a digital data network.
  • Automatic alarm detection systems with a decentralized alarm detection unit in the form of a so-called automatic dialing and announcement hazard detector according to the VDE 0820 standard and with an alarm center are already known for monitoring objects.
  • Such automatic dialing and announcement hazard detectors are connected on the project side to various monitoring contacts or signaling contacts for the detection of assigned alarms and are connected directly to the public telephone network.
  • these object-side alarm recording units select a stored number in the event of an alarm and, after the dial-up connection to the alarm center has been established, report a stored text to the security staff at the location of the alarm center, for example the location of the alarm knows.
  • an automatic dialing and announcement hazard detector of a more recent design fails to establish a connection to the alarm center even after several attempts, the hazard detector dials an alternative number in order to attempt to carry out the same procedure. Due to the long dialing times for several attempts, this form of connection establishment is unacceptable for objects that are classified as worthy of protection. For this reason, automatic dialing and announcement hazard detectors are only accepted by the association of property insurers for objects of low hazard class.
  • an ISDN connection is established by exchanging information packets between the calling subscriber and the ISDN network and between the ISDN network and the addressee or called subscriber.
  • This in- Formation packages are defined in international standards, such as ITU (CCITT) publication Q. 930-Q.940 "Digital Subscriber Signaling". These standards describe the individual data packets and how they can be used.
  • ITU CITT
  • Q. 930-Q.940 Digital Subscriber Signaling
  • the most important field which is best known from telephoning, is the "Calling Party Nu ber” field, which is known to users of ISDN telephones by the "Suppress phone number” function and by the "List call” function in private branch exchanges.
  • This "set up” packet is transmitted by the network, for example Weg, to the number specified in the "set up” packet.
  • the recipient With the first incoming signaling packet, the recipient receives information about the type of call and, insofar as the relevant field is filled, also information about the calling person.
  • a method for monitoring an object with a decentralized alarm detection unit assigned to the object and with an alarm center is such that a safe and fast Transmission of the alarm information in the event of an alarm is made possible without the need for a dedicated line between the alarm detection unit and the alarm center.
  • the call number transmitted in the D channel of the alarm recording unit serves as alarm information.
  • the transmitted number represents a clear criterion for identifying the decentralized alarm detection unit, which does not require any additional encryption, since ISDN connections, like all communication connections, are connection-oriented, i.e. a falsification of the addressee or the sender automatically leads to no connections.
  • the step of detecting the alarm state on the basis of the transmission of the information clearly identifying the decentralized alarm detection unit, preferably the call number of the decentralized alarm detection unit, is followed by the step of establishing a connection via the message / data channel of the digital data network if this channel is free.
  • This procedure corresponds to the establishment of a "normal" telephone connection, ie the standard signaling of an ISDN call is carried out with a free B channel of the ISDN network.
  • the message / data channel of the connection of the alarm center to the ISDN network is occupied by various alarm recording units due to a large number of alarm messages arriving at the same time.
  • Such an exceptional case can occur, for example, during a thunderstorm in which a large number of alarm detection devices for monitoring houses erroneously detect an intrusion situation. If the B channels are already occupied by such a natural event due to the large number of alarms arriving almost simultaneously, only the call is acknowledged and rejected, but the call number of the respective alarm recording units, i.e. the call number identification or the calling party number in the alarm center is saved.
  • This example shows that the method according to the invention has a reliable Compared to conventional, connection-oriented alarms, more alarming ensures that the same alarming effect is achieved only when a very large number of user channels, which essentially corresponds to the number of possible alarm sources, is achieved, but with a considerable additional technical effort and thus corresponding additional costs.
  • the incoming alarm messages can be used for the cartographic position display of the alarm location, so that trained personnel can distinguish false alarms caused by a thunderstorm from real alarms, for example.
  • the staff in the alarm center can, for example, switch an audio-video connection via the digital network and check the object.
  • the decentralized alarm detection unit can recognize the alarm center based on the call number of the alarm center and, in the event of an alarm, reject any other call with the exception of the call to the alarm center, so that the line cannot be blocked.
  • the alarm call is only acknowledged and rejected, the number of the respective alarm recording unit for which no free message / data channel was available in the alarm center is saved. This can result in considerable delays when establishing a connection between the alarm center and this alarm recording unit, if one is carried out later.
  • the invention is based on the object of a method for monitoring an object with one assigned to the object decentralized alarm detection unit and with an alarm center, such that a safe and fast transmission of the alarm information is made possible in the event of an alarm, without the need for a dedicated line between the alarm detection unit and the alarm center, with which an alarm center is possible even during overload times, a connection via a message - / To establish data channel between an alarm center and an alarm detection unit.
  • the invention creates a method for monitoring an object with a decentralized alarm detection unit assigned to the object and with an alarm center which are connected to one another via a digital data network with a signaling channel and a message / data channel, with the following method - steps:
  • the alarm center stores the information which uniquely identifies the alarm detection unit and generates an alarm display indicating the alarm detection unit;
  • At least one further alarm center and a plurality of decentralized alarm detection units with the digital Data network are connected, and wherein the above steps in the detection of an alarm are carried out by any one of the decentralized detection units between this decentralized detection unit and one of the alarm centers, and wherein at least one of the alarm centers detects an impending overload condition of incoming alarm calls at this alarm center - transmits line information to a remote station of the digital data network, which then forwards further alarm calls that are directed to this alarm center to another alarm center.
  • an alarm center for forwarding an alarm call can use the "Administrative Service" of the call eider réelle, which is accessible to an ISDN connection.
  • status information which indicates the degree of alarm call of the respective alarm center is preferably exchanged between the alarm centers.
  • This status information is then preferably exchanged between the alarm centers during signaling gaps via the signaling channel of the digital data network.
  • the call forwarding information can contain destination information which indicates to which alarm center the remote station is to forward an alarm call, this destination information being determined on the basis of the status information exchanged between the alarm centers.
  • the status information is transmitted over the signaling channel during signaling gaps.
  • the status information is preferably exchanged between the alarm centers by means of the X25 service of the ISDN network via the D channel of the ISDN network. This is an inexpensive way to transfer the status information.
  • the following description of the preferred exemplary embodiment of the method relates to its use in the case of the ISDN network as a digital data network.
  • Any digital data network that has a signaling channel or control channel and a message / data channel can be used instead of the ISDN network.
  • an alarm detection unit After the start of the method in a first step 1, an alarm detection unit carries out a check in step 2 as to whether an alarm is present.
  • the alarm detection unit can be a PC at the location of the object to be monitored, which is provided with a plurality of alarm sensors and is connected to the ISDN network. If the alarm detection unit detects the occurrence of this alarm in step 2, the program proceeds to step 3.
  • the alarm detection unit prepares the data to be transmitted including the calling party number and copies this data into the UUS frame, i.e. the field for data transmission from user to user via the signaling channel.
  • the data to be transmitted can be, for example, a characterization of the type of alarm, such as the response of a glass break sensor, the response of a fire sensor or the like.
  • the information built up in the UUS frame is transmitted by the alarm detection unit via the Signaling channel or D channel of the ISDN network transmitted to an alarm center.
  • step 5 the alarm center checks whether the number of the alarm detection unit transmitted via the signaling channel is known, that is to say, for example, it is contained in a table of the number of participants in the alarm system. If this is not the case, the method proceeds to step 6, in which the call is rejected. If the check in step 5 shows that the number of the alarm detection unit is one of the numbers contained in a table of the alarm center, the method continues in step 7, in which the alarm data, namely at least the number of the calling alarm detection unit, possibly the transmitted alarm type and, for example, the current time can be saved.
  • step 8 details of the monitored object, such as, for example, the address of the object, are read out and, in the subsequent step 9, are displayed as an alarm display connected to the address for the personnel in the alarm center.
  • the alarm is triggered before the connection described below is established with access to the message / data channel.
  • step 10 the alarm center checks whether the message / data channel or B channel of its connection to the ISDN network is free. If this is the case, the method continues with step 13. Otherwise, the method proceeds to step 11, in which the alarm center receives the alarm via the signaling channel or D channel of the ISDN network in the case of the so-called "release complete", that is to say the abort procedure for the connection establishment which did not come about via the signaling channel - avoidance reconfirmed.
  • this step 11 can in turn include the preparation of the data to be retransmitted, namely the reconfirmation, the copying of the data to be retransmitted into the UUS frame for ISDN and the subsequent transmission of the UUS frame pages of the alarm center via the signaling channel.
  • the alarm center or, if necessary, another center connected to the alarm center via a network tries to call the alarm detection unit in order to establish a connection via the message / data channel or B channel.
  • a connection is established via the message / data channel or B channel in the case of the ISDN network from the alarm center or the said other center to the alarm detection unit.
  • optical and / or acoustic data are transmitted from the alarm detection unit to the alarm center or to said other center via the message / data channel or B channel in the following method step 14 in order to determine the cause of the alarm check and in order to enable the personnel in the alarm center to take appropriate further measures, e.g. to notify the police, fire service, emergency services, etc.
  • an audio-video connection can be established between the alarm detection unit and the alarm center.
  • the establishment of the connection of the message / data channel or B channel in ISDN is terminated and the connection is thus ended.
  • the method ends in the following method step 16.
  • Steps 3 to 15 of the process sequence described are preferably repeated until the occurrence of the alarm has been transmitted from the alarm recording unit to the alarm center and the alarm center has transmitted the alarm either by reconfirmation via the signaling channel in step 11 or by establishing a connection via the message / data channel in step 13.
  • call forwarding is available, for example, in the ISDN network as an administrative service.
  • a subscriber A can forward an incoming call, regardless of whether it is analog or digital, to another subscriber B with a different number.
  • call forwarding information is transmitted to a remote station of the digital data network, which then automatically forwards incoming calls for subscriber A to subscriber B.
  • this call forwarding is used to respond to an alarm center, e.g. a critical decrease in free line access, to forward further alarm calls reaching this alarm center to another alarm center connected to the digital network.
  • a busy state of an alarm center can thus be avoided.
  • the selection of the phone number or the alarm center to which an incoming alarm call is to be forwarded can be made using an overload plan.
  • the alarm centers preferably communicate continuously in order to exchange status information regarding their load status. This communication takes place in the ISDN network preferably during signaling gaps over the signaling channel, i.e. the D channel, the ISDN network instead.
  • the ISDN network such a transmission is offered as an X25 service, which provides a tariff-compliant, inexpensive option for the transmission of data packets.
  • an alarm center If an alarm center detects an impending overload, it signals the remote station of the network operator. bers a message that further alarm calls should be forwarded to another alarm center.
  • This message which can be referred to as call forwarding information, can contain the number of the alarm center to which the alarm call is to be forwarded.
  • the status information mentioned above can be used, for example, to determine to which alarm center an alarm call should be forwarded, for example depending on the load status of the individual alarm centers.
  • Alarm centers and intelligent alarm detection units can also be interconnected to form an alarm network via the D channel of the ISDN network, X25 service, such that information about the state of the individual terminals, i.e. Alarm detection units, between the terminals and the control centers, i.e. Alarm centers to be replaced.
  • tamper protection and a load distribution mechanism can advantageously be set up using packet data traffic in the ISDN network of the X25 service. This can be done by a signaling chain and in the same way by a star network.
  • a system for alarm centers can be set up that distributes each alarm call to a free line of the networked alarm centers regardless of location. This means that a small number of control centers can serve a large number of alarm calls without an alarm detection unit sending an alarm call receiving a busy signal from an alarm center.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Alarm Systems (AREA)

Abstract

L'invention concerne un procédé pour surveiller un objet au moyen d'une unité de détection d'alarme décentralisée et d'une centrale d'alarme qui sont raccordées au moyen d'un réseau numérique de données comportant un canal de signalisation et un canal de messages/données. Ce procédé comprend les étapes suivantes: lorsqu'une alarme est détectée (1), une information représentant une connexion souhaitée est transmise (4). L'information est mémorisée (7) par la centrale d'alarme, puis un affichage d'alarme est produit (9). Enfin, si le canal de messages/données du réseau numérique de données est libre, une connexion est établie (13). Au moins une centrale d'alarme supplémentaire et une pluralité d'unités de détection décentralisées sont raccordées au réseau numérique. Lors de la détection d'une alarme par n'importe laquelle des unités de détection décentralisées, les étapes ci-dessus sont exécutées entre ladite unité de détection décentralisée et une des centrales d'alarme. Lors de la détection d'un état de surcharge des appels d'alarme entrants, au moins une des centrales d'alarmes transmet une information de transfert d'appel à un poste correspondant du réseau numérique de données qui transmet d'autres appels d'alarme à une centrale d'alarme décentralisée.
EP97951234A 1996-12-30 1997-11-18 Procede pour surveiller un objet au moyen d'un reseau numerique de donnees comportant une pluralite de centrales d'alarme Withdrawn EP0934645A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19654722 1996-12-30
DE1996154722 DE19654722C1 (de) 1995-06-30 1996-12-30 Verfahren zum Überwachen eines Objektes über ein digitales Datennetz mit einer Mehrzahl von Alarmzentralen
PCT/EP1997/006444 WO1998030010A1 (fr) 1996-12-30 1997-11-18 Procede pour surveiller un objet au moyen d'un reseau numerique de donnees comportant une pluralite de centrales d'alarme

Publications (1)

Publication Number Publication Date
EP0934645A1 true EP0934645A1 (fr) 1999-08-11

Family

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Application Number Title Priority Date Filing Date
EP97951234A Withdrawn EP0934645A1 (fr) 1996-12-30 1997-11-18 Procede pour surveiller un objet au moyen d'un reseau numerique de donnees comportant une pluralite de centrales d'alarme

Country Status (3)

Country Link
EP (1) EP0934645A1 (fr)
AU (1) AU5483898A (fr)
WO (1) WO1998030010A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5323444A (en) * 1991-08-16 1994-06-21 U S West Advanced Technologies, Inc. Emergency call system with call capacity/last chance routing feature
JPH06506580A (ja) * 1992-01-28 1994-07-21 モトローラ・インコーポレーデッド Ｉｓｄｎチャネルのデ−インタリーブに用いる遅延回路
US5311569A (en) * 1992-06-05 1994-05-10 At&T Bell Laboratories Line-based public safety answering point
JPH0772923A (ja) * 1993-09-02 1995-03-17 Mitsubishi Electric Corp 遠隔監視装置
DE29509506U1 (de) * 1995-06-14 1995-08-03 Wasenitz, geb. Schirmer, Marion, 65193 Wiesbaden Schaltungsanordnung zur Steuerung der Verarbeitung eines ankommenden Anrufs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9830010A1 *

Also Published As

Publication number Publication date
AU5483898A (en) 1998-07-31
WO1998030010A1 (fr) 1998-07-09

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