EP0503122A1 - Arrangement pour commuter des lignes primaires en cas de perturbations - Google Patents

Arrangement pour commuter des lignes primaires en cas de perturbations Download PDF

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Publication number
EP0503122A1
EP0503122A1 EP91103978A EP91103978A EP0503122A1 EP 0503122 A1 EP0503122 A1 EP 0503122A1 EP 91103978 A EP91103978 A EP 91103978A EP 91103978 A EP91103978 A EP 91103978A EP 0503122 A1 EP0503122 A1 EP 0503122A1
Authority
EP
European Patent Office
Prior art keywords
line
mpl1
switching
elements
primary
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
EP91103978A
Other languages
German (de)
English (en)
Other versions
EP0503122B1 (fr
Inventor
Otto Walter Dipl.-Ing. Moser
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
Original Assignee
Siemens AG
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 filed Critical Siemens AG
Priority to AT91103978T priority Critical patent/ATE131647T1/de
Priority to EP91103978A priority patent/EP0503122B1/fr
Priority to ES91103978T priority patent/ES2080174T3/es
Priority to DE59107080T priority patent/DE59107080D1/de
Publication of EP0503122A1 publication Critical patent/EP0503122A1/fr
Application granted granted Critical
Publication of EP0503122B1 publication Critical patent/EP0503122B1/fr
Priority to GR950403641T priority patent/GR3018511T3/el
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
    • G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
    • G08B26/005—Alarm systems in which substations are interrogated in succession by a central station with substations connected in series, e.g. cascade
    • 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
    • G08B25/04—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 a single signalling line, e.g. in a closed loop
    • 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 invention relates to an arrangement for switching primary reporting lines in the event of faults in a hazard detection system, which operates according to the chain synchronization principle.
  • DE-OS 25 33 382 discloses a method and a device for transmitting measured values in a fire alarm system.
  • danger detectors that operate according to the chain synchronization principle, e.g. Fire or intrusion detectors of pulse detection technology, described and which give their measured values in succession in a known manner and at the same time switch the line to the next detector.
  • the detectors are connected via a two-wire branch line, i.e. a signaling primary line with a-b wire, connected to the control center and are queried one after the other from the control center.
  • the switching device provided for this in the respective detector thus only works in one direction.
  • a disadvantage of this chain-shaped arrangement is that when an element is removed or fails, e.g. because the switching device is defective, or the chain is interrupted at the fault location in the event of a line break, which leads to a fault. This means that hazard detectors or, more generally speaking, elements which, seen from the control center, are connected to the primary reporting line after the fault location, are no longer operational.
  • the elements of a stub line are operated via a loop, ie the elements are switched on to the control center via the signaling primary line, as in stub line operation, after In the last element, however, the primary signal line is returned to the control center and connected there.
  • a loop formation of a hazard detection system is known from ER-PA 86116172.
  • all elements can continue to be operated in the event of an interruption, for example due to a line break or a defective switching device in the element.
  • the elements are queried until the error from the beginning of the primary reporting line and then the remaining detectors, which are arranged after the error, are queried from the control center from the end of the primary reporting line.
  • this requires that the elements and the associated switching devices are designed so that they can be operated in both directions, ie that they can be queried both from the beginning and from the end of the primary signal line.
  • Hazard detectors or elements that work according to the chain synchronization principle have the advantage over other alarm systems working in parallel that they already have a switching device that can be used in the event of a short circuit to unlock the fault location.
  • the loop Since the described loop systems are sensitive to electromagnetic interference or coupling, the loop is usually only operated from one side in the undisturbed operating state, i.e. all elements are queried from the beginning of the line.
  • the return line is generally only used in the event of a fault or for test purposes.
  • the line With loop operation it is also possible for the line to alternate, e.g. every second polling cycle, from the front or from the rear, or the polling direction is reversed at certain time intervals, so that the reverse direction can also be continuously checked for function.
  • This loop system is that all elements must be designed bidirectionally.
  • the switching devices of such elements must be able to carry or block current in both directions, which can be achieved, for example, by two SIPMOS transistors with a correspondingly more complex control electronics.
  • it must be possible to query the elements from both sides. All of this means a not inconsiderable additional circuit outlay, which is further increased considerably by a current measuring device for short-circuit detection, and this for each individual element.
  • an error for example an interruption or a short circuit
  • each branch line i.e. first reporting primary line
  • a plurality of switching elements arranged at selected locations between two elements.
  • Each switchover element is provided with control electronics, a switching device and a switchover device and is connected in a chain to the danger control center via a second signaling primary line.
  • the incoming second primary signal line is switched to the outgoing stub line by means of the control electronics, the switching device and the switching device of the switching element which is arranged after the interruption.
  • switching elements has the advantage that none for the individual regular elements additional circuitry is required, and that one or more switchover elements can be arranged in a targeted manner, that is to say placed in a sensible manner, in an existing hazard alarm system, but these must be connected to an additional primary reporting line for an alarm line.
  • the outgoing stub line can advantageously be switched off and the incoming second primary signal line can be switched to the outgoing stub line with the switching element after the short circuit.
  • This has the advantage that the elements can be queried from the control center up to the switching element before the short circuit, and that the further elements lying after the second switching element can be found via the second primary signal line via the second switching element which is arranged after the short circuit first primary line can still be queried. Only the line section in which the short circuit occurred, which is located between the two switching elements, can no longer be operated by the control center.
  • the two-core MPL primary line with wires a and b is connected to the central station Z.
  • the individual elements E1 to En are arranged on the primary signal line, which connect the next detector or the next element in sequence in a chain fashion with a switching device S1.
  • a hazard detection system for loop operation is indicated in FIG.
  • the alarm primary line MPL is connected to the control center Z in a loop, ie the beginning of the alarm line
  • MPL-A is connected to the central unit with the individual elements E1 to En.
  • the last detector or the last element En is connected to the control center again via the two-wire primary signal line, which is shown in FIG. 3 by the MPL-E primary signal line end and corresponding to the two wires a ⁇ and b '.
  • FIG. 4 the fault for the loop operation according to FIG. 3 is also shown using the example of a line break UB.
  • a line break UB which can also be caused by a defective switching device in one element.
  • all elements can continue to be operated. If the error lies, for example, between the elements E4 and E5, as shown in FIG. 4, the elements E1 to E4 are queried from the beginning of the line MPL-A and the elements En to E5 from the end of the line MPL-E.
  • the prerequisite for this is that the elements E1 to En and the associated switching devices S2 are designed so that they can be operated in both directions, that is to say that they can be queried both from the beginning and from the end of the primary signal line, which means that they must be designed bidirectionally.
  • Such switching devices S2 must therefore carry or block current in both directions, which can be achieved, for example, by means of two SIPMOS transistors with correspondingly complex control electronics.
  • the elements E1 to En are connected in a known manner to a stub line, ie first primary signal line MPL1. They have simple switching devices S1 that only work in one direction, ie switch from the beginning of the line to the end of the line. They are identical to that of the branch line operation forth from the elements known from pulse detection technology and can consist, for example, of only one SIPMOS transistor. All elements are always queried from the same side, namely from the beginning of the primary reporting line.
  • a switching element UE1 and UE2 is inserted between the elements E3 and E4 and between the elements E (n-2) and E (n-l). As shown in FIGS. 5 to 7, these switchover elements are additionally connected to the control center Z via a second signaling primary line MPL2. They are supplied, monitored and controlled via this second primary MPL2 signaling line, i.e. also operated in a chain-synchronous manner.
  • the switching element UE essentially consists of control electronics STE with a switching device S1, a switching device US with three permanently coupled contact levels US-1 to US-3, each with three switching positions 1 to 3, and terminals for the incoming and outgoing signaling primary lines MPL1 and MPL2.
  • the switchover device US At rest, i.e. in the regular operation of the hazard alarm system, the switchover device US is in position 1. This means that the first primary signal line MPL1 (stub line) is connected through.
  • This idle state is static, that is to say regardless of whether the switching element UE is connected to a second signaling primary line MPL2 or not, or even if the second signaling primary line MPL2 should not be ready for operation due to an error.
  • the switching element UE is supplied, operated and controlled exclusively via the second signaling primary line MPL2.
  • the control electronics STE are connected via the incoming a and b core of the second signaling primary line MPL2 provided.
  • This is constructed in exactly the same way as in the usual elements of the alarm system, which works according to the chain synchronization principle. This means that it delivers a measured value which signals the proper functioning of the switching element and which can also include, for example, the position of the switching device US. It then switches the second primary signal line MPL2 on to the next switching element in a known manner via the switching device S1. It can also receive control commands (for example DE-PS 25 33 354) from the control center in a known manner and operate the switching device US as a function thereof. This is shown by way of example in FIG.
  • the switchover device US is expediently constructed with transistors, for example self-conducting or normally-off MOS transistors.
  • the respective switching device US is switched through in the individual switching elements UE in the undisturbed operation.
  • the switchover device US is therefore in its static idle position in position 1. All elements E1 to En can therefore be queried via the first primary signal line MPL1 like normal pulse detectors.
  • the switching elements UE do not occupy any additional addresses on the first signaling primary line MPL1.
  • FIG. 6 shows an example of a line break UB, a fault after element E5.
  • the elements E1 to E5 are properly recognized and queried by the control center Z via the first primary signal line MPL1.
  • Element E6 can no longer be recognized. Since the system configuration of the control center is known, it also knows the switching element following the fault location UB, here in the exemplary embodiment UE2. With a control command via the second signaling primary line MPL2, this switching element UE2 is now caused to switch the switching device US to position 3. As a result, the incoming second message primary line MPL2 is switched to the outgoing first message primary line MPL1 in the switching element UE2.
  • the E6 to E (n-2) identified by a thicker border in the drawing after the fault location UB up to the next switching element UE2 are deactivated by the line break UB.
  • a further example shows the sequence in the event of a line or element short-circuit K in FIG.
  • the fault location K lies after element E4.
  • a current measuring device is of course also necessary here, which can detect a line current that is too large or a resistance that is too small between the a and b wires.
  • This current measuring device is usually implemented in the control center.
  • the elements E1 to E4 are queried in a known manner via the first primary signal line.
  • the short-circuit point K is switched on.
  • An increased line current flows via the first primary signal line MPL1, which is recognized by the current measuring device in the control center.
  • the control center Z controls the previous switching element, closest to the fault location K, in the exemplary embodiment UE1, via the second reporting primary line MPL2, in such a way that the faulty line section is completely activated, i.e. has no connection to the first reporting primary line or to the second reporting primary line .
  • This is achieved in position 2 of the switching device US of the switching element UE1.
  • the fault location is thus switched off, the further operation of the Elements up to this switching element UE1, ie the elements E1 to E3 are no longer at risk.
  • the control center Z switches the switching element UE2 following the fault location K to the second reporting primary line MPL2 via the second reporting primary line (position 3 of the switching device US).
  • the remaining elements, here in the exemplary embodiment E (n-1) to En, are now queried via the second primary signaling line.
  • the elements between the two switching elements UE1 and UE2, that is, elements E4 to E (n-2), are no longer ready for operation in this case.
  • the arrangement according to the invention i.e. Through the use of such switching elements according to the invention, the number of elements that are at maximum failure in the event of a simple line or element fault can be limited to the number of elements installed between two switching elements. By using several switchover elements and their sensible configuration or placement in the primary reporting line, the hazard alarm system can largely continue to be operated even in the event of an error. In the event of a line fault on the second signaling primary line MPL2 or an element fault in a switchover element UE, the normal operation of the elements E1 to En via the first signaling primary line MPL1 is not affected, since as a rule all switchover devices US are in their static idle position, i.e. Position 1, remain.
  • the arrangement according to the invention thus has the advantage that, in a hazard detection system that operates on the principle of chain synchronization, for example pulse detection technology, the regular detector elements used there, for example smoke detectors, push-button detectors, and external ones Detector displays or the like, which are generally also installed in large quantities, do not require any special additional effort.
  • the regular detector elements used there for example smoke detectors, push-button detectors, and external ones Detector displays or the like, which are generally also installed in large quantities, do not require any special additional effort.
  • all of the existing elements for example all detectors and displays of pulse signaling technology, can still be operated unchanged.
  • measures to reduce the number of elements affected by the failure in the event of a line or element fault are desired or required, this can be done with the arrangement according to the invention by inserting the switching elements described above without changing or increasing the cost of existing elements (for example detectors).
  • the maximum number of elements that can no longer be operated in the event of an error can be determined by sensibly configuring switchover elements. It

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Alarm Systems (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
EP91103978A 1991-03-14 1991-03-14 Arrangement pour commuter des lignes primaires en cas de perturbations Expired - Lifetime EP0503122B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT91103978T ATE131647T1 (de) 1991-03-14 1991-03-14 Anordnung zum umschalten von meldeprimärleitungen bei störungen
EP91103978A EP0503122B1 (fr) 1991-03-14 1991-03-14 Arrangement pour commuter des lignes primaires en cas de perturbations
ES91103978T ES2080174T3 (es) 1991-03-14 1991-03-14 Disposicion para la conmutacion de lineas primarias de alarma en caso de averias.
DE59107080T DE59107080D1 (de) 1991-03-14 1991-03-14 Anordnung zum Umschalten von Meldeprimärleitungen bei Störungen
GR950403641T GR3018511T3 (en) 1991-03-14 1995-12-21 Arrangement for commuting primary leads during faults

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91103978A EP0503122B1 (fr) 1991-03-14 1991-03-14 Arrangement pour commuter des lignes primaires en cas de perturbations

Publications (2)

Publication Number Publication Date
EP0503122A1 true EP0503122A1 (fr) 1992-09-16
EP0503122B1 EP0503122B1 (fr) 1995-12-13

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ID=8206523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91103978A Expired - Lifetime EP0503122B1 (fr) 1991-03-14 1991-03-14 Arrangement pour commuter des lignes primaires en cas de perturbations

Country Status (5)

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EP (1) EP0503122B1 (fr)
AT (1) ATE131647T1 (fr)
DE (1) DE59107080D1 (fr)
ES (1) ES2080174T3 (fr)
GR (1) GR3018511T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1508885A1 (fr) * 2003-08-18 2005-02-23 Siemens Building Technologies AG Procédé et canal de communication pour la transmission simultanée de plusieurs flux d'informations par un moyen de communication commun, ainsi que système de signalisation de danger
EP1510988A3 (fr) * 2003-08-18 2007-08-29 Siemens Schweiz AG Procédé et canal de communication pour la transmission simultanée de plusieurs flux d'informations ainsi que système de signalisation de danger

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0224819A1 (fr) * 1985-11-26 1987-06-10 Siemens Aktiengesellschaft Système de signalisation de danger
DE3637681A1 (de) * 1986-11-05 1988-05-19 Siemens Ag Gefahrenmeldeanlage nach dem pulsmeldesystem
EP0361298A1 (fr) * 1988-09-26 1990-04-04 Alcatel Cit Système de collecte des alarmes d'un ensemble de stations

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0224819A1 (fr) * 1985-11-26 1987-06-10 Siemens Aktiengesellschaft Système de signalisation de danger
DE3637681A1 (de) * 1986-11-05 1988-05-19 Siemens Ag Gefahrenmeldeanlage nach dem pulsmeldesystem
EP0361298A1 (fr) * 1988-09-26 1990-04-04 Alcatel Cit Système de collecte des alarmes d'un ensemble de stations

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1508885A1 (fr) * 2003-08-18 2005-02-23 Siemens Building Technologies AG Procédé et canal de communication pour la transmission simultanée de plusieurs flux d'informations par un moyen de communication commun, ainsi que système de signalisation de danger
EP1510988A3 (fr) * 2003-08-18 2007-08-29 Siemens Schweiz AG Procédé et canal de communication pour la transmission simultanée de plusieurs flux d'informations ainsi que système de signalisation de danger

Also Published As

Publication number Publication date
DE59107080D1 (de) 1996-01-25
GR3018511T3 (en) 1996-03-31
ATE131647T1 (de) 1995-12-15
EP0503122B1 (fr) 1995-12-13
ES2080174T3 (es) 1996-02-01

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