EP0462442B1 - Verfahren zum Verhindern des Scharfschaltens einer Einbruchmeldeanlage - Google Patents

Verfahren zum Verhindern des Scharfschaltens einer Einbruchmeldeanlage Download PDF

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Publication number
EP0462442B1
EP0462442B1 EP91109050A EP91109050A EP0462442B1 EP 0462442 B1 EP0462442 B1 EP 0462442B1 EP 91109050 A EP91109050 A EP 91109050A EP 91109050 A EP91109050 A EP 91109050A EP 0462442 B1 EP0462442 B1 EP 0462442B1
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EP
European Patent Office
Prior art keywords
monitoring
arming
signal
ues
changed
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Expired - Lifetime
Application number
EP91109050A
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German (de)
English (en)
French (fr)
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EP0462442A1 (de
Inventor
Karlheinz Dipl.-Ing. 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
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Siemens AG
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Publication date
Application filed by Siemens AG filed Critical Siemens AG
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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
    • G08B25/008—Alarm setting and unsetting, i.e. arming or disarming of the security system
    • 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
    • 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

Definitions

  • the invention relates to a method for preventing the arming of a burglar alarm system with a control center and with at least one reporting primary line, which is formed by a serial signal bus to which various elements and a block lock element are connected at the end of a respective monitoring area.
  • intrusion detection systems In intrusion detection systems, it is common practice to mark the end of a surveillance area, i.e. the last door to be locked is to be fitted with an electromechanical block lock. The intruder alarm system is armed with the block lock and the last door is mechanically locked at the same time. However, arming should only be possible if the entire system is ready to arm, i.e. no detector or element of the intrusion detection system may issue an intrusion report, e.g. a window contact that issues a message if the window is still open, i.e. not closed.
  • an intrusion report e.g. a window contact that issues a message if the window is still open, i.e. not closed.
  • the object of the invention is to provide a method in a burglar alarm system described at the outset which avoids waiting times when arming, i.e. the response times are reduced without reducing the number of elements per primary line or increasing the data transmission rates.
  • the method according to the invention is characterized in that all the elements connected to a primary signal line can listen to signaling signals almost simultaneously and emit their own signaling signals, and that the signal used for line monitoring is specifically changed by the element that wants to prevent arming .
  • the block lock in question immediately recognizes a non-arming enable for its area and blocks the arming.
  • the control center also recognizes a permissible change from the changed monitoring signal and does not interpret this as a fault.
  • the central unit In contrast to central processing, in which the individual detectors are queried for their status based on a request for arming, and when a detector is recognized that does not allow arming, the central unit sends a signal to the block lock to enable arming To block.
  • This cumbersome data exchange between the block lock and the relevant detectors or elements and the control center is no longer necessary in the method according to the invention.
  • the method according to the invention has the advantage of a significantly lower data transmission rate, that is, if an element signals that it is not ready to arm, the associated block lock recognizes immediately, that is, without data exchange to and from the control center again to the block lock, that the Arming is not possible.
  • At least one very specific bit of the bit sequence of the monitoring signal can expediently be changed. It is advantageous if a plurality of monitoring areas are connected to a primary signaling line to specifically change a different part of the monitoring signal for each monitoring area, so that the associated block lock can deduce its area from the changed monitoring signal.
  • the control center recognizes from the multiply changed monitoring signal that arming is prevented, for example, for two different areas at the same time.
  • the method according to the invention can advantageously be used for different network structures, i.e. regardless of the network design of the intrusion detection system.
  • the free end is usually provided with a terminating element, which initiates regularly from the control center or also generates a standby telegram by itself as a monitoring signal with a predetermined bit sequence.
  • the control center regularly generates a standby telegram as a monitoring signal, which is passed on unchanged by each element in the normal state of the intrusion detection system until it reaches the control center again.
  • the element concerned changes the idle telegram according to the invention, which is then passed on from element to element to the control center as a modified idle telegram.
  • the last element of a monitoring area is designed in a known manner as a block lock. This block lock detects the changed idle telegram and interprets this as a signal to prevent arming and blocks its locking mechanism.
  • the element which wishes to prevent arming can destroy the monitoring signal (idle telegram), from which it is recognized that arming is to be prevented.
  • an intrusion alarm system EMA is shown schematically, which has a central Z.
  • a single signaling primary line MPL is connected to the control center Z and is terminated at its free end with the terminating element ELA.
  • the signaling primary line MPL is designed as a serial signal bus SB, to which a large number of elements EL1 to EL (n + 1) are connected, all of which can simultaneously listen to the data traffic of the signal bus SB and can also emit a signal almost simultaneously.
  • the signaling primary line MPL is divided into two monitoring areas UEB1 and UEB2. At the end of each surveillance area there is a block lock BS1 and BS2 on the last door.
  • the monitoring area UEB1 is provided with the last element EL4 as a block lock BS1, the monitoring area UEB2 as the last element EL (n + 1) as a block lock BS2.
  • the terminating element ELA regularly emits a monitoring signal UES as an idle telegram in the form of a predetermined bit sequence. This monitoring signal UES is heard by all elements and also by the central office Z. If the monitoring signal UES remains unchanged, the control center Z recognizes no malfunction, no alarm and no manipulation. It is now assumed that the element EL2 wants to prevent arming, which is indicated by SV, because, for example, the element EL2 is a window contact and the associated window is open.
  • the element EL2 specifically changes the monitoring signal UESV, for example by changing one or two specific bits of the bit sequence.
  • the changed monitoring signal UES ' is heard by all elements and also the control center. Since the block lock BS1 (element EL4) hears the changed monitoring signal and interprets it as a signal that arming is to be prevented, a locking device is extended in block lock BS1, for example, so that the last door can neither be locked nor armed.
  • the control center Z which also receives the changed monitoring signal UESV, recognizes on the basis of the specific change in this signal that there is no interference here, but that an element of the signaling primary line MPL wants to prevent arming SV.
  • it is expedient in any case if arming is to be prevented, to change the monitoring signal for a monitoring area in a very specific manner and for a further monitoring area in a different specific manner, so that in each case only the associated block lock on the Desire to prevent arming can react and the control center can also recognize the area from which the request to prevent arming comes. This is made clear in a further exemplary embodiment.
  • FIG. 2 schematically shows an intrusion alarm system EMA with a control center Z, to which an alarm primary line MPL in the form of a token ring is connected.
  • the token ring has six elements EL1 to EL6, a first monitoring area UEB1 being formed by the first three elements EL1 to EL3 with EL3 as a block lock BS1.
  • a second monitoring area UEB2 also has three elements here, with the block lock BS2 forming the end of an area, which is the last element EL6 of the token ring.
  • the element EL1 now wants to prevent arming, which is indicated by SV
  • the monitoring signal that comes from the central station Z as a monitoring token TUE changed from element EL1 to a token TUV, which is passed on unchanged by the second element EL2.
  • the third element EL3 or the block lock BS1 recognizes from the changed monitoring token TUV that arming is to be prevented, so that the block lock BS1 is blocked.
  • the block lock BS1 changes the token to be passed on to a new surveillance token TUN1, which is passed on as a surveillance signal by each subsequent element and reaches the central station Z unchanged, unless another element wants to prevent arming in the second surveillance area UEB2. This is indicated in the example of the element EL5 with SV7.
  • the element EL5 now changes the new monitoring token TUN1 to a token TUNV, which is intended to prevent arming SV for the monitoring area UEB2.
  • the second block lock BS2 recognizes from the again changed token TUNV that arming is to be prevented for the associated area and consequently blocks the block lock.
  • the second block lock can also change the monitoring token in such a way that this newly changed token TUN2 has, for example, a further changed bit to prevent arming in the monitoring area UEB2.
  • the token TUN2 now received by the central station Z is recognized as a deliberately changed monitoring token, with the information that the arming for the first and the second monitoring area UEB1 and UEB2 is to be prevented.
  • the line-monitoring signal can be changed by the individual elements or stations in such a way that each listening block lock can conclude that its area is ready for arming, or that arming is prevented when the specified monitoring signal is specifically changed. If a primary signal line has several areas, different parts of the monitoring signal are specifically changed.
  • the method according to the invention can be used in the case of open primary signal lines in various signal transmission methods, for example in a polling method or a time slot method or also in a free-running system with and without a collision.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Burglar Alarm Systems (AREA)
  • Alarm Systems (AREA)
EP91109050A 1990-06-20 1991-06-03 Verfahren zum Verhindern des Scharfschaltens einer Einbruchmeldeanlage Expired - Lifetime EP0462442B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4019663 1990-06-20
DE4019663 1990-06-20

Publications (2)

Publication Number Publication Date
EP0462442A1 EP0462442A1 (de) 1991-12-27
EP0462442B1 true EP0462442B1 (de) 1995-03-29

Family

ID=6408729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91109050A Expired - Lifetime EP0462442B1 (de) 1990-06-20 1991-06-03 Verfahren zum Verhindern des Scharfschaltens einer Einbruchmeldeanlage

Country Status (5)

Country Link
EP (1) EP0462442B1 (es)
AT (1) ATE120574T1 (es)
DE (1) DE59105032D1 (es)
ES (1) ES2069772T3 (es)
GR (1) GR3015578T3 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4339318C1 (de) * 1993-11-18 1995-05-04 Grundig Emv Vorrichtung zum Scharfschalten einer Funkalarmanlage
DE4443391A1 (de) * 1994-12-06 1996-06-13 Aeg Sensorsysteme Gmbh System mit einer Mehrzahl von Schlössern

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3025730C2 (de) * 1980-07-08 1982-04-29 Recke, Manfred, 7410 Reutlingen Einrichtung zum Schärfen und Entschärfen einer Überwachungsanlage
DE3316793A1 (de) * 1983-05-07 1984-11-08 Sachs Systemtechnik Gmbh, 8720 Schweinfurt Kombination einer zentral-verriegelungs-anlage mit einer diebstahl-warnanlage
DE3682256D1 (de) * 1985-10-18 1991-12-05 Siemens Ag Scharf-/unscharf-schalteinrichtung fuer eine einbruchmeldeanlage.

Also Published As

Publication number Publication date
DE59105032D1 (de) 1995-05-04
EP0462442A1 (de) 1991-12-27
GR3015578T3 (en) 1995-06-30
ES2069772T3 (es) 1995-05-16
ATE120574T1 (de) 1995-04-15

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