EP0485878A2 - Procédé pour déterminer la configuration des détecteurs d'un système d'alarme - Google Patents

Procédé pour déterminer la configuration des détecteurs d'un système d'alarme Download PDF

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Publication number
EP0485878A2
EP0485878A2 EP91118892A EP91118892A EP0485878A2 EP 0485878 A2 EP0485878 A2 EP 0485878A2 EP 91118892 A EP91118892 A EP 91118892A EP 91118892 A EP91118892 A EP 91118892A EP 0485878 A2 EP0485878 A2 EP 0485878A2
Authority
EP
European Patent Office
Prior art keywords
detector
detectors
matrix
control center
serial number
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.)
Granted
Application number
EP91118892A
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German (de)
English (en)
Other versions
EP0485878B1 (fr
EP0485878A3 (en
Inventor
Horst Dipl.-Ing. Berger
Heiner Dipl.-Ing. Politze
Peter Dipl.-Ing. Ungemach
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.)
Novar GmbH
Original Assignee
Esser Sicherheitstechnik GmbH
Caradon Esser GmbH
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 Esser Sicherheitstechnik GmbH, Caradon Esser GmbH filed Critical Esser Sicherheitstechnik GmbH
Publication of EP0485878A2 publication Critical patent/EP0485878A2/fr
Publication of EP0485878A3 publication Critical patent/EP0485878A3/de
Application granted granted Critical
Publication of EP0485878B1 publication Critical patent/EP0485878B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G08B25/003—Address allocation methods and details
    • 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
    • G08B26/001—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel

Definitions

  • the invention relates to a method of the type specified in the preamble of claim 1, and a suitable detector.
  • EP-A1-0 191 239 already discloses a hazard alarm system with detectors which have certain design features which enable the control center to recognize the installation sequence of the detectors connected in parallel to a two-wire detection line, regardless of whether the detection line is a stub line, is designed as a ring line or as a combination of both.
  • each detector contains at least one relay, through whose contacts the detection line is guided.
  • each detector contains an address memory and a microprocessor, which is able to exchange data with the control center. When the system is switched on for the first time, the so-called initialization, the relay contacts in all detectors are open.
  • the control center now assigns an address to the first one, that is to say the detector next to it, and sends the command to this detector to save this address and to activate its relay so that its contacts close.
  • the control center operates analogously.
  • the control panel After the initialization is complete, the control panel has all detectors individually recognized and can address them via their address if the detection line is a simple stub or ring line. If, on the other hand, it is an installation with several branch lines and / or sub-ring lines, which may be branched out, special detectors are installed at the branch or connection points, which contain a second relay, which together with the first relay acts as a so-called T- Switch works.
  • initialization is initially carried out in the direction of the branches (stub or sub-ring line) up to the associated last detector.
  • the control center then continues from the branch point in the other branch direction after it has transmitted the command to switch its T switch to the relevant detector.
  • the topology of the system that is to say the exact configuration of its detectors, can be determined from the knowledge gained in this way of the sequence of the detectors and the position of the special detectors containing a T switch.
  • each detector must be equipped with an expensive bistable relay, namely because of the desired, low power consumption, the special detectors installed at junction or junction points even with two such relays. Replacing the relay or relays with semiconductor circuits fails because of the voltage drops which add up in view of the series connection and would also have hardly any cost advantages.
  • the address assigned to a detector simultaneously identifies the installation location of the detector, an exchange of two or more detectors not recognized by the control center would have the consequence that alarm signals emitted by these detectors would originate from the respective original installation location would be interpreted so that, for example, intervention forces would be misguided.
  • the detector address is stored in a volatile memory in the known system, so it is lost when the detector is removed.
  • the removal of more than one detector in the control center is displayed as a fault, which requires a new initialization after rectification.
  • the problem described could be avoided in a system in which the address memory of each detector is located in its usually permanently installed base. The need for a second circuit board in each detector base and the corresponding transfer contacts to the detector speak against such a solution from both a cost and reliability point of view.
  • the invention has for its object to provide a method of the type specified in the introduction, which gets by with a comparatively simple structure, namely at least in its majority relay-free detectors and when configuration changes (changes to the existing installation) a re-initialization normally only to the extent of the changes made requires or carries out.
  • the invention is also based on the object of providing a detector which is suitable for carrying out such a method.
  • the first-mentioned object is achieved by the method specified in the characterizing part of patent claim 1.
  • the sub-claims 2 to 6 contain advantageous embodiments of this method.
  • the block diagram shown in solid lines in FIG. 1 represents a detector which has a microprocessor 4 with a connected sensor 7, a non-volatile memory 15, e.g. B. in the form of a PROM, a current measuring device 1, 2 and a current sink 13a and 13b in front and behind the current measuring device 1, 2 comprises.
  • the current measuring device consists of a series resistor 1 in which one wire of the detection line, which is led via the detector connections 10, 12, the other wire of which carries the reference potential, usually ground, and is connected to the detector connections 9, 11.
  • the voltage drop across the series resistor 1 is measured by a voltage detector 2, which is connected to the microprocessor 4.
  • the sensor 7 and the non-volatile memory 15 are also connected to this.
  • the microprocessor 4 controls the first current sink 13a and the second current sink 13b.
  • the microprocessor 4 receives its supply voltage from the wire of the detection line led via the connections 10, 12 via a line 4a.
  • the microprocessor 4 also includes a shift register, not shown, which is known per se, the task of which will be explained below.
  • Detector with built-in isolator for example in the form of a relay contact in the live wire of the reporting line are known per se.
  • the detector described here, proposed here becomes a detector with isolating element by adding the components shown in broken lines. In detail, it is a relay 3 controlled by the microprocessor 4, the contact of which takes the place of the line section 8 between the connection points 8a and 8b in the relay-less detector, for example consisting of a short-circuit bridge.
  • the supply line 4a for the microprocessor 4 is omitted. This then receives its supply voltage via the line 4d, as well as the diode 6a or the diode 6b, depending on whether the detector is from the central station via the Port 10 or is fed via the port 12. The other diode is then used for decoupling.
  • the capacitor 5 lying against the reference potential by the line 4b has the task of supplying the microprocessor 4 with its operating voltage in the event of a supply voltage failure (for example as a result of a short circuit) until the microprocessor 4 actuates the relay 3 and thus opens its contact can.
  • the relay 3 and / or its contact can be installed in the base of the detector instead.
  • An arrangement of detectors from one isolating element embodied by the relay 3 or its contact, including the next, can be referred to as a "segment".
  • FIG. 3 shows in a highly schematic form such a system, consisting of the center Z, which can feed either the start A or the end B of a ring line.
  • the detectors 11, 22, 21, 39, 81, 41 and 20 are located one behind the other in the ring line.
  • a first branch line with three detectors 46, 40 and 44 branches off between detectors 22 and 21.
  • the detectors When the system is fully installed, the detectors are quasi parallel (due to the series resistance 1 of the current measuring device 1, 2 in each detector, it is not a real parallel connection) on the detection line comprising any stub and / or ring lines, are randomly distributed and initially indistinguishable from the head office.
  • the central unit is also initially not aware of the number of detectors installed.
  • Each detector receives a unique serial number in the course of the production process. This is stored in the form of an imprint on the detector housing and as a binary number in a non-volatile memory in the detector. Each detector is therefore unique, which differs from every other detector both in terms of its housing imprint and its stored binary number.
  • the control center now places all detectors in an initialization routine using a collective command. In this state, each detector sends a power response to the control center if it recognizes its serial number in a data telegram sent by the control center.
  • the control center can therefore find out the actually installed detectors and determine their serial numbers by querying all possible serial numbers. Assuming that the serial number e.g. Is 24 bits long, that is 24 digits long, this procedure is very lengthy. It is therefore advisable to use other algorithms which are known per se and which lead to the goal more quickly.
  • the control center first sends the collective command "reinitialization” to all detectors.
  • their microprocessors are brought into a mode based on this algorithm.
  • the control center now sets the most significant bit (MSB) to "1" in an internal memory area, the width of which corresponds to the number of digits of the serial number, and sends the collective query to all detectors: "Are there detectors that have a" 1 "as the most significant bit?"
  • all detectors that apply i.e. have a "1" as MSB
  • the control center determines whether at least one detector answered "yes" to the question (it is not checked how many detectors answered).
  • control center changes the MSB to "0". The next least significant bit remains at “1". The control center then sends the collective query "Are there detectors that have the bit sequence" 01 "in the two most significant bits?"
  • This procedure logically corresponds to halving the possible value range and a threshold query to the detectors, in which half the respective serial number is located. Once the corresponding half has been determined, it is again halved (corresponds to the setting of the next least significant bit), etc.
  • the number of query steps corresponds exactly to the number of bits in the serial number, i.e. With a 24-digit serial number, exactly 24 steps are required to recognize a given serial number.
  • the control center sends the command to this detector to behave passively until the entire detection algorithm has been run through. This means that this detector will no longer respond to the queries sent by the control center, and the control center can thus determine the detector with the next lower serial number.
  • S means the number of steps and n the total number of detectors in the system.
  • n the total number of detectors in the system.
  • each serial number of a detector determined last must be the highest serial number at the moment.
  • the query of the remaining detectors can therefore be shortened by the steps that are only necessary for the recognition of serial numbers that are equal to or higher than the last determined serial number.
  • each detector can be addressed with its serial number (to shorten the data traffic, the control center can also replace each 24-bit serial number with an internal number with, for example, 7 bits), the detectors are assigned a collective command to the so-called
  • Each detector then recognizes by means of its current measuring device those current pulses which originate from detectors which, seen from the control center, lie behind the detecting detector. Upon receipt of its own serial number, the detector generates a current pulse for a certain time, which is at least so long that the other detectors are able to register this current pulse. However, the detector generating the current pulse does not measure this own current pulse.
  • the control center now queries all serial numbers one after the other. With each query, all detectors load the result of their current measurement into the shift register contained in their microprocessor 4 and increment it. If a detector detects a current increase, its microprocessor notes this in its shift register with a logical "1", in the other case with a logical "0". The detector notes its own transmitted current pulse in the shift register with a logical "0".
  • connection sequence of the connections 10, 12 of each detector is interchangeable on both sides of the current measuring device 1, 2, negative current values can also occur. Before the current measurement information is loaded into the shift register, an amount is therefore formed. If negative current values occur, this determination is also stored in the microprocessor.
  • each detector After each detector has given its current response and measured that of the other, there is a bit sequence in the shift register of each detector, which is referred to below as a current vector with the dimension n, where n in turn is the number of detectors present. Since each detector has registered such a current vector, there are n different current vectors. These are queried one after the other by the individual serial numbers of the existing detectors and saved in the columns of a matrix. This matrix is referred to below as the "S matrix" and is shown in FIG. 2 for the case of the system configuration shown in FIG. 3. The individual current responses are in the rows of the S matrix. Each line accordingly shows the current pulse pattern that is stored in the shift registers of all other detectors when the detector corresponding to this line is queried.
  • the configuration of the system can be calculated using the S matrix. For this purpose, sums are first formed from the rows and columns of the matrix. The relevant values are designated in FIG. 2 by ⁇ H and ⁇ V.
  • the sum ⁇ H of each line i (i from 1 to n) provides information about how many detectors are between the control panel and the detector with the i-th serial number.
  • a new matrix is formed from the row sums and the column sums of the S matrix together with the associated serial numbers, which has the following appearance in the selected example: ⁇ H ⁇ V Ser.No. 4th 0 87 4th 2nd 81 2nd 2nd 46 4th 0 44 5 1 41 3rd 1 40 3rd 4th 39 1 9 22 2nd 5 21st 6 0 20th 0 10th 11
  • the control center determines the information that is still required to determine the spatial configuration.
  • the number of end indicators and their serial numbers are known from the A matrix.
  • the current vectors in the S matrix ("1" entry in the relevant lines) designate the further detectors belonging to the respective end detectors. In the selected example, the following three quantities result:
  • the detectors 21 and 39 could belong to either set 1 or set 3 (M1 ⁇ M3).
  • the control center now switches to feeding the line in the opposite direction, so now feeds into line end B. Repetition of the query described above provides, among other things, the result that the detector 20 is now the first and the detector 11 is the last detector, and also the sequence of the detectors lying in between on the ring line. The control center thus recognizes that the detectors 21 and 39 belong to the ring line and thus together with the detectors 11 and 22 to the set 3.
  • the assignment can be made based on the larger number of detectors or a decision can be made by lot.
  • the control center now knows the basic configuration of the system. So she knows whether there is a loop, in the affirmative which detectors belong to the loop, how many stubs there are and which detectors belong to which stub.
  • control center uses the ascending order of the values of the row sum ⁇ H of the A matrix to determine the position of the branch points and the order of the detectors in the respective stub lines, as described above under c), but now also including the more as one-time numbers or values.
  • the control center now assigns installation numbers to the detectors according to the recognized configuration and outputs the recognized configuration together with these installation numbers on a screen and / or a printer.
  • the installer or operator of the system can now in turn transfer the installation numbers assigned by the control center to his installation plan and, conversely, enter all the texts stored in the control center for all or for selected detectors at their respective installation location.
  • each installation number assigned by the control center designates a very specific installation location, it is of crucial importance for the function of the system, especially in the event of an alarm, that this assignment is retained even in the event of any conceivable interventions in the detector configuration or there is a clearly recognizable reallocation.
  • control center logs all changes to the system that it has determined according to the above diagram (as well as all other relevant events). A state in which an incoming message is assigned to a location other than the real installation location of the relevant detector cannot occur.

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Helmets And Other Head Coverings (AREA)
EP91118892A 1990-11-16 1991-11-05 Procédé pour déterminer la configuration des détecteurs d'un système d'alarme Expired - Lifetime EP0485878B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4036639 1990-11-16
DE4036639A DE4036639A1 (de) 1990-11-16 1990-11-16 Verfahren zur ermittlung der konfiguration der melder einer gefahrenmeldeanlage und fuer die anlagenkonfigurationsbestimmung geeigneter melder
US07/909,572 US5402101A (en) 1990-11-16 1992-07-06 Method for determining the configuration of detectors of a danger alarm system and for determining the system configuration of suitable detectors

Publications (3)

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EP0485878A2 true EP0485878A2 (fr) 1992-05-20
EP0485878A3 EP0485878A3 (en) 1993-07-14
EP0485878B1 EP0485878B1 (fr) 1998-02-04

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US (1) US5402101A (fr)
EP (1) EP0485878B1 (fr)
AT (1) ATE163103T1 (fr)
DE (2) DE4036639A1 (fr)
ES (1) ES2114872T3 (fr)
HK (1) HK1004925A1 (fr)

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EP0616306A1 (fr) * 1993-03-17 1994-09-21 Hochiki Corporation Procédé et dispositif pour la surveillance d'un système de prévention de sinistres
EP0734005A1 (fr) * 1995-03-24 1996-09-25 Bticino S.P.A. Système de réception/gestion pour signaux numériques issus de dispositifs électroniques, et capables d'apprendre la configuration des capteurs, en particulier pour système d'alarme
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US5786757A (en) * 1995-05-16 1998-07-28 General Signal Corporation Load shed scheme for two wire data transmission
US5864286A (en) * 1995-05-16 1999-01-26 General Signal Corporation Distributed intelligence alarm system having a two- tier monitoring process for detecting alarm conditions
EP0929056A2 (fr) * 1998-01-08 1999-07-14 Caradon Esser GmbH Installation de surveillance
WO1999041725A1 (fr) * 1998-02-11 1999-08-19 Scantronic Limited Systemes electroniques
DE19940700A1 (de) * 1999-08-27 2001-03-08 Job Lizenz Gmbh & Co Kg Verfahren und Vorrichtung zur automatischen Zuweisung von Melderadressen bei einer Gefahrenmeldeanlage
WO2004028115A1 (fr) * 2002-09-04 2004-04-01 Robert Bosch Gmbh Bus
WO2009010745A1 (fr) * 2007-07-16 2009-01-22 Thorn Security Limited Identification d'une pluralité de dispositifs
WO2013135767A1 (fr) * 2012-03-14 2013-09-19 Robert Bosch Gmbh Procédé d'exploitation d'un réseau
WO2013135764A1 (fr) * 2012-03-14 2013-09-19 Robert Bosch Gmbh Procédé d'exploitation d'un réseau
US8842747B2 (en) 2010-10-08 2014-09-23 Honeywell International Inc. Method for digital communication between a plurality of nodes connected by a serial field bus and corresponding system, in particular a field control system or field surveyance system
US10812444B2 (en) 2015-08-14 2020-10-20 Ebm-Papst Mulfingen Gmbh & Co. Kg Network configuration and method for assigning of network addresses to fans in a network

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EP1703481B1 (fr) * 2005-03-15 2007-11-14 Siemens Schweiz AG Procédé pour déterminer la configuration d'un système d'alarme et système d'alarme
US10354516B2 (en) * 2006-09-15 2019-07-16 Tyco Safety Products Canada, Ltd. Method and apparatus for automated activation of a security system
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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0616306A1 (fr) * 1993-03-17 1994-09-21 Hochiki Corporation Procédé et dispositif pour la surveillance d'un système de prévention de sinistres
US5428343A (en) * 1993-03-17 1995-06-27 Hochiki Corporation Disaster prevention monitoring apparatus and method
EP0734005A1 (fr) * 1995-03-24 1996-09-25 Bticino S.P.A. Système de réception/gestion pour signaux numériques issus de dispositifs électroniques, et capables d'apprendre la configuration des capteurs, en particulier pour système d'alarme
US5670937A (en) * 1995-05-16 1997-09-23 General Signal Corporation Line monitor for two wire data transmission
US5701115A (en) * 1995-05-16 1997-12-23 General Signal Corporation Field programmable module personalities
US5721530A (en) * 1995-05-16 1998-02-24 General Signal Corporation Stand alone mode for alarm-type module
US5786757A (en) * 1995-05-16 1998-07-28 General Signal Corporation Load shed scheme for two wire data transmission
US5864286A (en) * 1995-05-16 1999-01-26 General Signal Corporation Distributed intelligence alarm system having a two- tier monitoring process for detecting alarm conditions
EP0929056A3 (fr) * 1998-01-08 2000-04-26 Caradon Esser GmbH Installation de surveillance
EP0929056A2 (fr) * 1998-01-08 1999-07-14 Caradon Esser GmbH Installation de surveillance
WO1999041725A1 (fr) * 1998-02-11 1999-08-19 Scantronic Limited Systemes electroniques
DE19940700A1 (de) * 1999-08-27 2001-03-08 Job Lizenz Gmbh & Co Kg Verfahren und Vorrichtung zur automatischen Zuweisung von Melderadressen bei einer Gefahrenmeldeanlage
DE19940700C2 (de) * 1999-08-27 2003-05-08 Job Lizenz Gmbh & Co Kg Verfahren und Vorrichtung zur automatischen Zuweisung von Melderadressen bei einer Gefahrenmeldeanlage
WO2004028115A1 (fr) * 2002-09-04 2004-04-01 Robert Bosch Gmbh Bus
WO2009010745A1 (fr) * 2007-07-16 2009-01-22 Thorn Security Limited Identification d'une pluralité de dispositifs
US8232869B2 (en) 2007-07-16 2012-07-31 Thorn Security Limited Identifying a plurality of devices
US8842747B2 (en) 2010-10-08 2014-09-23 Honeywell International Inc. Method for digital communication between a plurality of nodes connected by a serial field bus and corresponding system, in particular a field control system or field surveyance system
WO2013135767A1 (fr) * 2012-03-14 2013-09-19 Robert Bosch Gmbh Procédé d'exploitation d'un réseau
WO2013135764A1 (fr) * 2012-03-14 2013-09-19 Robert Bosch Gmbh Procédé d'exploitation d'un réseau
EP2826227B1 (fr) * 2012-03-14 2020-07-15 Robert Bosch GmbH Procédé d'exploitation d'un réseau
US10812444B2 (en) 2015-08-14 2020-10-20 Ebm-Papst Mulfingen Gmbh & Co. Kg Network configuration and method for assigning of network addresses to fans in a network

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Publication number Publication date
ES2114872T3 (es) 1998-06-16
ATE163103T1 (de) 1998-02-15
US5402101A (en) 1995-03-28
EP0485878B1 (fr) 1998-02-04
DE4036639A1 (de) 1992-05-21
DE59108931D1 (de) 1998-03-12
EP0485878A3 (en) 1993-07-14
DE4036639C2 (fr) 1993-07-15
HK1004925A1 (en) 1998-12-11

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