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EP1630760A1 - Procédé de transmission radio dans un système de signalisation d'alarmes - Google Patents

Procédé de transmission radio dans un système de signalisation d'alarmes Download PDF

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Publication number
EP1630760A1
EP1630760A1 EP05107285A EP05107285A EP1630760A1 EP 1630760 A1 EP1630760 A1 EP 1630760A1 EP 05107285 A EP05107285 A EP 05107285A EP 05107285 A EP05107285 A EP 05107285A EP 1630760 A1 EP1630760 A1 EP 1630760A1
Authority
EP
European Patent Office
Prior art keywords
main station
station
route
stations
radio transmission
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.)
Ceased
Application number
EP05107285A
Other languages
German (de)
English (en)
Inventor
Karlheinz Schreyer
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP1630760A1 publication Critical patent/EP1630760A1/fr
Ceased legal-status Critical Current

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Classifications

    • 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
    • G08B25/08—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 communication transmission lines
    • 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
    • G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
    • G08B26/007—Wireless interrogation
    • 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

Definitions

  • the invention relates to a method for radio transmission in a hazard detection system having a main station and a plurality of substations, wherein the main station and the substation each have a transmitting and receiving device.
  • the alarm systems comprise alarm sensors as secondary stations which, in the event of a detected danger (fire, burglary) transmit a danger message via a radio link to a central station or main station (which should also be understood as repeater and router), in which further measures ( Alerting the fire department or the police) are initiated.
  • the message sensors each comprise a transmitting and receiving device and should be as self-sufficient as possible for use in inaccessible places, i. with a battery.
  • each slave station attempts to transmit data via radio directly to the main station. If the direct radio transmission between the master station and one of the slave stations is disturbed, this slave station transmits its data to another slave station and this further slave station transmits the data to the master station.
  • the substations and the main station attempt to communicate with each other at predetermined time intervals as part of an integrity check. If this integrity check does not work, the slave station that does not reach the main station reports to the main station via the additional slave station. that it is functional and has to be communicated via the additional secondary station.
  • the route is stored in the main station, via which intermediate stations the secondary stations can be reached and with which further intermediate stations or secondary stations the respective intermediate stations are in direct contact. If an integrity check now fails at predetermined time intervals, a different route than the original route is selected in the main station on the basis of the stored network information and the contact with the secondary station is attempted on this basis by means of a telegram.
  • the main station determines the new route here. The effectiveness of such a method depends crucially on the resources provided by the element seeking a new route. For cost reasons, the resources in the substations are always subject to considerable cost pressure. Not only the computing power and the available memory are limited, also the necessary radio traffic is subject to narrow restrictions.
  • a high volume of traffic means a high current drain from the battery.
  • the higher resources available in a main station can more easily exploit all the possibilities of route finding that are inherent in the system.
  • the main station uses information that was obtained in advance from the network and that is stored as stored data.
  • the main station therefore has an image of the network with all substations and connection attributes. This information can be used in a known manner to optimize the route choice.
  • the optimization method used can use all the network information and is not dependent on individual options - for example, the connection with the fewest intermediate stations. A small detour can certainly bring more security.
  • the newly determined route is stored in the main station and further integrity checks and possible data communication take place on this route. In this way a once disturbed route can be avoided and an attempt is made to use a better route instead.
  • field strengths are determined in the communication with the secondary stations, these are stored in the main station and taken into account in the determination of the new route.
  • the field strength is a measure of the reception level, it can be assumed that at a high field strength better communication is achieved.
  • the main station transmits in the telegram to the secondary station with the route to be selected
  • the intermediate stations evaluate the telegram and forward the telegram according to the contained route information.
  • the Volunteer- / intermediate stations can thus be designed appropriately low.
  • An even more flexible embodiment of the method is characterized according to claim 5, characterized in that the main station transmits to the intermediate stations routing lists, from which emerge the routes to reach the secondary stations.
  • the intermediate stations store these routing lists and use she for communication with other substations. This reduces the computational effort in the main station.
  • the main station determines only a suitable intermediate station for establishing contact and transmitted to them the order to establish contact and the intermediate station then determined itself on the basis of their stored routing list the best way to the secondary station. In this way, the system is decentralized optimized and it is the elements charged with the optimization, which are closer to a probable error in the system.
  • FIG. 1 shows how a main station 1 communicates with a plurality of substations S1 to S9.
  • the secondary station S6 is normally reached via the intermediate stations S4 and S5 on a first path 2.
  • an integrity check is carried out regularly, during which the monitoring station S6 with the Master 1 on Route 2 communicates. Now occur, for example, due to fading holes communication problems, the main station 1 determines a new route to the secondary station S6 (for example, the path 3 via the substations S1 and S2).
  • a matrix is stored in the main station, in which the characteristics of the communication to the individual substations S1 to S9 are recorded.
  • Possible table entries are shown in FIG. 2: these are the number of intermediate stations required for the communication from the slave station to the main station in a first line, the field strength with which the signal of the individual slave stations in the master station is received second line, the bit error rate in the communication of the individual substations with the main station in a third line and, for example, the number of failed connections in the communication in a fourth line.
  • the corresponding data are constantly determined and updated as part of the integrity check.
  • the first filling of the table can be specified directly during the installation of the network, or be determined by the main station in conjunction with the substations in an initialization phase itself.
  • Such a matrix can also be stored in the substations S1... S9, which act as intermediate stations. During the integrity check, such a matrix can then also be updated in the intermediate stations and used for future routing tasks.
  • the field strength is entered as the value for the field strength, which is measured in the communication between two substations communicating directly without an intermediate station, or between the main station and the slave station.
  • Such a direct connection is also referred to as hop, ie a connection running over several intermediate stations has a corresponding number Hops, for example, the connection between the main station 1 and the slave station S6 runs over 3 hops.
  • a further route can be determined in the main station 1 on the basis of the stored information, which can be compared to other possible routes, for example by a shorter connection to the secondary station S6, or by a higher field strength in the communication with the slave station S6, by a lower bit error rate or by a smaller number of failed connections.
  • the communication between the main station 1 and the secondary station S6 then runs in the future.
  • the main station 1 performs the entire determination of the optimal route in a known manner, or embodiments in which the main station 1 only the next best intermediate station (for example, the secondary station S4) determined and to this the communication request to the secondary station S6 transmitted.
  • the best route to the intermediate station S6 can then be determined on the basis of a matrix stored there.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)
EP05107285A 2004-08-11 2005-08-08 Procédé de transmission radio dans un système de signalisation d'alarmes Ceased EP1630760A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410039026 DE102004039026B3 (de) 2004-08-11 2004-08-11 Verfahren zur Funkübertragung in einem Gefahrenmeldesystem

Publications (1)

Publication Number Publication Date
EP1630760A1 true EP1630760A1 (fr) 2006-03-01

Family

ID=35478367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05107285A Ceased EP1630760A1 (fr) 2004-08-11 2005-08-08 Procédé de transmission radio dans un système de signalisation d'alarmes

Country Status (2)

Country Link
EP (1) EP1630760A1 (fr)
DE (1) DE102004039026B3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11272384B2 (en) 2017-08-11 2022-03-08 Honeywell International Inc. Systems and methods for increasing the reliability of a wireless communication connection

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5029334A (en) * 1989-03-21 1991-07-02 Asea Brown Boveri Ltd. Process for transferring data packets
EP0811959A1 (fr) * 1996-06-07 1997-12-10 GRUNDIG Aktiengesellschaft Système d'alarme commandé par radio avec sous-stations et transmission sûr de données
EP1244081A1 (fr) 2001-03-23 2002-09-25 Siemens Gebäudesicherheit GmbH & Co. OHG Procede de communication radio dans un systeme d'alarme

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1282095B1 (fr) * 2001-08-03 2010-09-01 Siemens Aktiengesellschaft Procédé de communication radio dans un système d'alarme

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5029334A (en) * 1989-03-21 1991-07-02 Asea Brown Boveri Ltd. Process for transferring data packets
EP0811959A1 (fr) * 1996-06-07 1997-12-10 GRUNDIG Aktiengesellschaft Système d'alarme commandé par radio avec sous-stations et transmission sûr de données
EP1244081A1 (fr) 2001-03-23 2002-09-25 Siemens Gebäudesicherheit GmbH & Co. OHG Procede de communication radio dans un systeme d'alarme

Also Published As

Publication number Publication date
DE102004039026B3 (de) 2006-06-08

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