EP0492427A2 - Circuit économiseur de batterie pour système d'alarme - Google Patents

Circuit économiseur de batterie pour système d'alarme Download PDF

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Publication number
EP0492427A2
EP0492427A2 EP91121756A EP91121756A EP0492427A2 EP 0492427 A2 EP0492427 A2 EP 0492427A2 EP 91121756 A EP91121756 A EP 91121756A EP 91121756 A EP91121756 A EP 91121756A EP 0492427 A2 EP0492427 A2 EP 0492427A2
Authority
EP
European Patent Office
Prior art keywords
sensor
signals
transmitter
alarm
counter
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Withdrawn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
EP91121756A
Other languages
German (de)
English (en)
Other versions
EP0492427A3 (en
Inventor
Wilhelm Stürzl
Norbert Bogner
Peter Grundl
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.)
Diehl Verwaltungs Stiftung
Original Assignee
Diehl GmbH and Co
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 Diehl GmbH and Co filed Critical Diehl GmbH and Co
Publication of EP0492427A2 publication Critical patent/EP0492427A2/fr
Publication of EP0492427A3 publication Critical patent/EP0492427A3/de
Withdrawn legal-status Critical Current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
    • G08B25/008—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
    • 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

Definitions

  • the invention relates to a power-saving circuit for alarm systems with battery-operated motion detectors, in particular with IR sensors, each motion detector having an HF transmitter and being wirelessly connected to the central system.
  • the alarm systems for room surveillance currently on the market generally consist of a central unit that triggers the alarm and one or more motion detectors distributed in the room, which are connected to the central unit with connecting cables or wirelessly and upon detection of movement in the monitored room send an alarm signal to the central unit.
  • the invention is concerned with such alarm systems in which the motion detectors are battery operated so that they can be placed anywhere in the room to be monitored. These motion detectors are wirelessly connected to the central unit. For practical reasons, these motion detectors are designed without their own focusing device, since it can be troublesome for the user, on the one hand, to focus or disarm each motion detector individually, and there is also the risk that one or the other will be forgotten. For this reason, alarm systems of this type only have a central focusing device.
  • the invention has now set itself the goal of proposing a power saving circuit which reduces the energy consumption of the motion detectors in the time in which the central alarm system is disarmed and more frequent public traffic takes place in the monitored room.
  • the invention uses the features shown in the characterizing part of claim 1.
  • the invention is generally based on the idea that a motion detector, which frequently detects motion during room monitoring, only sends a signal to the central alarm system for the first time or twice, but subsequent signals are suppressed if these signals are within a predetermined time Distances occur.
  • a timeout of 20 seconds within which alarm signals are suppressed, a considerable part of the battery energy is saved and a battery life of around one year is therefore predictable for a motion detector.
  • the actual reduction in security in the event that the alarm system is armed and an unauthorized person enters the room is low.
  • one or two alarm signals are emitted when the intruder is detected for the first time and no further alarm is given if the intruder is constantly moving in the area of the motion detector.
  • an IR sensor 1 is shown schematically, which emits a pulse when a movement is detected in the room to be monitored. This pulse is present on the one hand at the up-count input of an up / down counter 2, but at the same time it is also fed to the trigger input of a monostable flip-flop 3.
  • a frequency generator 5 is connected to the down-counter input of the up / down counter 2 via a connecting line 4, which generates a pulse to the down-counter input every 20 seconds. The interval of 20 seconds is chosen based on statistical studies on the activation of motion detectors. With 2a the outputs of the up / down counter 2 are designated. They output the counts 20 21 and 22. All outputs are combined in an OR gate 6, the output of which is at the blocking input 3a of the monostable flip-flop 3. The output of this flip-flop is connected to the RF transmitter 7 of the motion detector.
  • the individual pulse trains are named with the reference numerals of the components on which these pulses arise.
  • the motion detector in particular the IR sensor 1
  • the power-saving circuit according to the invention only has the desired effect if movements take place continuously in the monitoring area of the IR sensor 1.
  • the pulse train 1 shows the activation signals that the IR sensor 1 emits. As can be seen, these are non-uniform in time. Initially, the up / down counter 2 is at the value 0.
  • the monostable flip-flop 3 outputs a control signal to the RF transmitter 7.
  • a second alarm signal is emitted at the end of a 20 sec.
  • 5 pulses are emitted by the generator at intervals of 20 seconds.
  • counter 2 starts after the 2nd alarm signal from the IR sensor, counter 2 counts up one digit whenever a new activation of the IR sensor takes place within the next 20 seconds. If no such activation occurs, counter 2 is counted down by one digit after the next 20 sec. Pulse.
  • the counter initially counted up to its limit value 4 - which was chosen arbitrarily - and was then counted down by one step until it finally returned to zero after no further movements were detected by the IR sensor counts down. It can be seen from the pulse train 3a that the transmitter can only issue alarm signals at those times when the counter reading is zero. The transmitter is "in focus”.

Landscapes

  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Burglar Alarm Systems (AREA)
EP19910121756 1990-12-24 1991-12-19 Battery saver circuit for alarm system Withdrawn EP0492427A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4041825 1990-12-24
DE19904041825 DE4041825C2 (de) 1990-12-24 1990-12-24 Alarmanlage

Publications (2)

Publication Number Publication Date
EP0492427A2 true EP0492427A2 (fr) 1992-07-01
EP0492427A3 EP0492427A3 (en) 1993-08-11

Family

ID=6421472

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910121756 Withdrawn EP0492427A3 (en) 1990-12-24 1991-12-19 Battery saver circuit for alarm system

Country Status (2)

Country Link
EP (1) EP0492427A3 (fr)
DE (1) DE4041825C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005055017A2 (fr) * 2003-12-01 2005-06-16 Ems-Patent Ag Procede et dispositif de reduction du consommateur de courant dans des appareils a accumulateurs
WO2010095075A1 (fr) * 2009-02-20 2010-08-26 Koninklijke Philips Electronics N.V. Système, procédé et appareil pour faire entrer un dispositif en mode actif
EP2455926A1 (fr) * 2010-11-19 2012-05-23 Honeywell International Inc. Pont entre un système de sécurité et des appareils
EP3599522A1 (fr) * 2018-07-25 2020-01-29 EBS Spolka z ograniczona Odpowiedzialnoscia 3E Production sp.k. Système de surveillance de biens immobiliers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19939535C2 (de) * 1999-08-20 2003-10-09 Wiesemann & Theis Gmbh Verfahren zur Funkübertragung eines Statussignals eines Sensors
DE10309334B4 (de) * 2003-03-04 2006-12-07 Enocean Gmbh Bewegungsmelder

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056815A (en) * 1976-02-03 1977-11-01 Westinghouse Electric Corporation Battery operated transmitter circuit
EP0125387A1 (fr) * 1983-04-29 1984-11-21 Cerberus Ag Méthode et dispositif de signalisation de risque

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2913266A1 (de) * 1979-04-03 1980-10-16 Ecotron Ges Fuer Elektronische Verfahren zur drahtlosen ueberwachung von objekten, insbesondere von gebaeuden

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056815A (en) * 1976-02-03 1977-11-01 Westinghouse Electric Corporation Battery operated transmitter circuit
EP0125387A1 (fr) * 1983-04-29 1984-11-21 Cerberus Ag Méthode et dispositif de signalisation de risque

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005055017A2 (fr) * 2003-12-01 2005-06-16 Ems-Patent Ag Procede et dispositif de reduction du consommateur de courant dans des appareils a accumulateurs
WO2005055017A3 (fr) * 2003-12-01 2005-09-15 Abb Research Ltd Procede et dispositif de reduction du consommateur de courant dans des appareils a accumulateurs
CN100468287C (zh) * 2003-12-01 2009-03-11 Ems专利股份公司 用于减小电池供电装置中电力消耗的方法和装置
WO2010095075A1 (fr) * 2009-02-20 2010-08-26 Koninklijke Philips Electronics N.V. Système, procédé et appareil pour faire entrer un dispositif en mode actif
RU2534073C2 (ru) * 2009-02-20 2014-11-27 Конинклейке Филипс Электроникс Н.В. Система, способ и аппарат для инструктирования устройству входить в активный режим
EP2455926A1 (fr) * 2010-11-19 2012-05-23 Honeywell International Inc. Pont entre un système de sécurité et des appareils
US8872625B2 (en) 2010-11-19 2014-10-28 Honeywell International Inc. Bridge between security system and appliances
US9460610B2 (en) 2010-11-19 2016-10-04 Honeywell International Inc. Bridge between security system and appliances
EP3599522A1 (fr) * 2018-07-25 2020-01-29 EBS Spolka z ograniczona Odpowiedzialnoscia 3E Production sp.k. Système de surveillance de biens immobiliers
WO2020020975A1 (fr) * 2018-07-25 2020-01-30 Ebs Spolka Z Ograniczona Odpowiedzialnoscia 3E Production Sp.K. Système de surveillance de biens immobiliers

Also Published As

Publication number Publication date
EP0492427A3 (en) 1993-08-11
DE4041825C1 (fr) 1992-07-16
DE4041825C2 (de) 1996-06-20

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