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EP1906371B1 - Contrôle de dispositif d'alarme - Google Patents

Contrôle de dispositif d'alarme Download PDF

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Publication number
EP1906371B1
EP1906371B1 EP07394020A EP07394020A EP1906371B1 EP 1906371 B1 EP1906371 B1 EP 1906371B1 EP 07394020 A EP07394020 A EP 07394020A EP 07394020 A EP07394020 A EP 07394020A EP 1906371 B1 EP1906371 B1 EP 1906371B1
Authority
EP
European Patent Office
Prior art keywords
alarm
remote control
alarm system
switch
control unit
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.)
Active
Application number
EP07394020A
Other languages
German (de)
English (en)
Other versions
EP1906371A3 (fr
EP1906371A2 (fr
Inventor
Michael Byrne
Fergus Flynn
Michael Guinee
James Duignan
Ronan Doyle
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.)
EI Technology Ltd
Original Assignee
EI Technology Ltd
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38925517&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1906371(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by EI Technology Ltd filed Critical EI Technology Ltd
Publication of EP1906371A2 publication Critical patent/EP1906371A2/fr
Publication of EP1906371A3 publication Critical patent/EP1906371A3/fr
Application granted granted Critical
Publication of EP1906371B1 publication Critical patent/EP1906371B1/fr
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Classifications

    • 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
    • G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
    • G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • G08B21/14—Toxic gas alarms
    • 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
    • G08B29/12—Checking intermittently signalling or alarm systems
    • G08B29/123—Checking intermittently signalling or alarm systems of line circuits

Definitions

  • the invention relates to control of alarm devices such as heat, CO, or smoke alarm devices.
  • Fig. A This has a number of problems.
  • the alarm has to be modified mechanically to provide an extra terminal. This can require a special junction box, a "pattress" as shown, to connect it. This makes the unit much bulkier from a cosmetic point of view than it otherwise needs to be.
  • the installer has to run an extra wire, along with the mains wires and the interconnect wire (four wires not including earth). These alarms use non-isolated supplies - this means that all of the wiring between alarms has to be mains rated.
  • Document WO 2006 044 358 discloses an alarm system according to the preamble of claim 1.
  • Document US 5 705 979 discloses an alarm system where alarm devices can be centrally controlled by means of voltage modulation over an interconnect wire.
  • the invention is directed towards providing improved remote control of alarm devices.
  • the remote control unit comprises means for modulating remote control signals according to voltage level.
  • the remote control unit applies to the interconnect wire a higher voltage level than that of alarm device interconnect signals.
  • the remote control unit comprises a switch for causing said high-Voltage signal to be delivered on the interconnect wire.
  • said switch connects a high voltage derived from the mains supply to the interconnect wire.
  • the switch connects the mains supply to the interconnect wire via a capacitor and a diode.
  • the alarm device control circuits comprise means for operating in response to a remote control signal to test the associated devices.
  • the alarm device control circuits comprise means for operating in response to a remote control signal to hush the associated devices.
  • the alarm device control circuits comprise means for operating in response to a remote control signal to suppress low-battery beeps.
  • said switch is spring-biased to a default position at which the interconnect wire is not pulled to a low voltage.
  • the transistor turn-on voltage is prevented if a test or hush operation is required.
  • a test or hush switch of the remote control unit when pressed, shorts the capacitor.
  • sensors are smoke or heat sensors.
  • Smoke alarm devices typically have an interconnect line that is already wired.
  • the invention provides an alarm system including a remote control unit and interfaces in the alarm devices which handle remote control signals on the interconnect line. This means that alarm systems can be readily provided with remote control by simply sliding the existing alarm devices off their mounting plates and replacing them with alarm devices of the invention, and fitting the control units.
  • a remote control unit 1 is shown in Figs. 1 and 2 . It fits into a conventional two-switch mains box similar to that used for lighting in houses.
  • the unit 1 has a Locate switch 2 and a Test/Hush switch 3.
  • An alarm system is completed by alarm devices 10 having circuitry 50 shown in Fig. 3 for remote control processing, and wiring 20.
  • the unit 1 may be wall-mounted at a convenient location such as where a light switch would be located.
  • a higher-than-normal voltage (15V) is delivered to the alarm devices 10 via the interconnect line.
  • the interface circuit 50 ( Fig. 3 ) performs test or hush operations as appropriate in response to the received 15V.
  • the switch 2 the interconnect line is pulled to ground, thus stopping devices from alarming with the exception of that which has detected smoke.
  • the devices 10 use the interconnect line for signals to all other devices 10 to alarm. For clarity, only two alarm devices are shown in Fig.1 , however in practice there are typically several more than this number.
  • the devices 10 use a voltage in the range of 4 Volts up to the alarm DC supply voltage, typically about 11 Volts for interconnect signalling.
  • this same wire is used by the remote control unit 1 to cause the devices 10 to test themselves by checking their chambers. This is done by putting a 15 Volts signal on the interconnect line to trigger the device's circuit, which has a 13 Volt threshold.
  • the 15 volts DC is readily generated by the unit 1 from the 230VAC mains circuit. This has a further benefit as it checks that the mains is present, as the unit 1 will not trigger the devices 10 if the mains is off, as the 15 Volts DC will not be generated.
  • the 15 Volts DC is generated when the switch 3 connects the mains to mains dropping capacitors C1 and C2, a power-limiting resistor R1, a rectifier diode CR2, and a zener diode CR1.
  • This 15 Volts on the interconnect line is delivered to the smoke alarm devices 10.
  • a Locate circuit 4 is also included in the unit 1.
  • the (spring loaded) Locate switch 2 by default connects the interconnect line (which will have about 8 volts on it when any interconnected device 10 on it is in alarm) to charge an electrolytic capacitor C3.
  • this voltage is applied to the gate of an FET Q1, through R5, turning Q1 on.
  • Q1 therefore shorts the interconnect line to Neutral, bringing it to almost 0 volts, thus silencing all of the interconnected devices 10 apart from the device 10 sensing smoke/fire/CO.
  • the user can then hear just the device which is sounding and so immediately locate the source of the alarm and take appropriate action.
  • the resistors R5 and R6 will discharge the capacitor C3 and so the FET Q1 will turn off thus restoring the system to normal standby.
  • a possible problem with the circuit 4 is that with C3 charged, then the interconnect will not operate when the Test/Hush switch 3 is pressed. The user may then think the system is defective. However, when the Test/Hush switch 3 is pressed, a transistor Q2 is turned on through a diode CR3 and a resistor R3, and it discharges C3, thus removing the short from the interconnect line. A diode CR2 and a resistor R1 ensure that there is sufficient voltage to turn on Q2 with the FET Q1 on.
  • Fig. 3 From Fig. 3 it can be seen that the 15 Volts delivered by the unit 1 turns on a transistor Q53 and this along with R51 provides a suitable pull down voltage for smoke alarms with ionisation smoke chambers.
  • a 12 Volt zener diode CR6 prevents a transistor Q53 from turning on unless the voltage is above about 13 Volts - preventing the combined Test/Hush feature from being activated with an interconnect signal, which only goes to 10 Volts.
  • Q53 also turns on Q52 and this provides a pull up voltage to first test ionisation devices and then after the switch is released to put the devices into hush mode for 10 minutes, by pulling the relevant smoke IC pin high.
  • a high resistor (R51, about 10,000 ohms) limits the current in series on the interconnect line.
  • this high resistance would also very significantly reduce the current, normally over 5mA, from the I.C. used to turn on other interconnect alarms. This problem is overcome by adding a diode CR52 across the resistor R51.
  • a further feature that can be activated by the remote control unit 1 is the suppression of low battery beeps for 12 hours.
  • Smoke alarm devices with replaceable batteries often start giving low battery beeps at about 5.00am in the morning as this is when the house is typically coolest and the battery voltage lowest - much to the annoyance of the awakened user.
  • the remote control unit of the invention activates the Test/Hush mode, and so pressing the Test/Hush switch will also suppress the low battery beeps for 12 hours on these types of alarms. This is far easier than going around to all the ceiling mounted units (there could be twelve units or more) in the system and pressing all their buttons. Pressing the remote Test/Hush switch 3, which is connected to all the devices, will do this easily with just one button press.
  • the interconnect line may be used for Test and Hush with separate voltage levels rather than a combined single level.
  • signals may be modulated with frequency or pulsing control rather than intensity levels as described above.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Security & Cryptography (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Alarm Systems (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)

Claims (14)

  1. Un système d'alarme comprenant une pluralité de dispositifs d'alarme (10) interconnectés par un fil d'interconnexion (IC) et chacun d'eux possédant un détecteur de condition environnementale et un circuit de commande, et une unité de télécommande (1), où l'unité de télécommande (1) comprend un moyen (2, 3, 4) de modulation de signaux de télécommande sur le fil d'interconnexion (IC) reliant les dispositifs d'alarme (10), et chaque circuit de commande de dispositif d'alarme comprend un moyen (50) d'exécution d'opérations en réponse auxdits signaux.
    où l'unité de télécommande (1) comprend un commutateur (2) et un circuit (4) destinés à fonctionner en réponse à une entrée d'utilisateur de façon à court-circuiter le fil d'interconnexion (IC) vers une basse tension, de sorte qu'une signalisation d'interconnexion entre les dispositifs d'alarme (10) soit empêchée et uniquement un dispositif détectant une situation d'alarme se déclenche,
    où le circuit (4) applique une tension d'activation à un transistor (Q1) de façon à raccorder le fil d'interconnexion à la terre lorsque le commutateur (2) est enclenché,
    caractérisé en ce que ladite tension d'activation est appliquée par un condensateur (C3) et le circuit (4) est adapté de façon à charger ledit condensateur à partir de la ligne d'interconnexion lorsqu'elle est élevée du fait d'un avertisseur de fumée étant en état d'alarme.
  2. Un système d'alarme selon la Revendication 1, où l'unité de télécommande (1) comprend un moyen de modulation de signaux de télécommande selon un niveau de tension.
  3. Un système d'alarme selon la Revendication 2, où l'unité de télécommande (1) applique au fil d'interconnexion (IC) un niveau de tension plus élevé que celui des signaux d'interconnexion de dispositif d'alarme.
  4. Un système d'alarme selon la Revendication 3, où l'unité de télécommande (1) comprend un commutateur (3) destiné à amener ledit signal haute tension à être fourni sur le fil d'interconnexion (IC).
  5. Un système d'alarme selon la Revendication 4, où ledit commutateur (3) relie une tension élevée dérivée de l'alimentation secteur au fil d'interconnexion (IC).
  6. Un système d'alarme selon la Revendication 5, où le commutateur (3) relie l'alimentation secteur au fil d'interconnexion (IC) par l'intermédiaire d'un condensateur (C1, C2) et d'une diode (CR2).
  7. Un système d'alarme selon la Revendication 6, où il y a au moins deux condensateurs (C1, C2) en parallèle.
  8. Un système d'alarme selon l'une quelconque des Revendications précédentes, où les circuits de commande de dispositif d'alarme comprennent un moyen (50) destiné à fonctionner en réponse à un signal de télécommande destiné à tester les dispositifs associés.
  9. Un système d'alarme selon l'une quelconque des Revendications précédentes, où les circuits de commande de dispositif d'alarme comprennent un moyen (50) destiné à fonctionner en réponse à un signal de télécommande destiné à mettre en silence les dispositifs associés.
  10. Un système d'alarme selon l'une quelconque des Revendications précédentes, où les circuits de commande de dispositif d'alarme comprennent un moyen (50) destiné à fonctionner en réponse à un signal de télécommande destiné à supprimer des bips de batterie faible.
  11. Un système d'alarme selon l'une quelconque des Revendications précédentes, où ledit commutateur (2) est sollicité par un ressort vers une position par défaut dans laquelle le fil d'interconnexion (IC) n'est pas tiré vers une basse tension.
  12. Un système d'alarme selon l'une quelconque des Revendications précédentes, où la tension d'activation du transistor (Q1) est empêchée si une opération d'essai ou de mise en silence est requise.
  13. Un système d'alarme selon la Revendication 12, où un commutateur d'essai ou de mise en silence (3) de l'unité de télécommande, lorsqu'il est activé, court-circuite le condensateur.
  14. Un système d'alarme selon l'une quelconque des Revendications précédentes, où les détecteurs sont des détecteurs de fumée ou de chaleur.
EP07394020A 2006-09-28 2007-09-20 Contrôle de dispositif d'alarme Active EP1906371B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IE20060706 2006-09-28

Publications (3)

Publication Number Publication Date
EP1906371A2 EP1906371A2 (fr) 2008-04-02
EP1906371A3 EP1906371A3 (fr) 2010-03-24
EP1906371B1 true EP1906371B1 (fr) 2011-10-19

Family

ID=38925517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07394020A Active EP1906371B1 (fr) 2006-09-28 2007-09-20 Contrôle de dispositif d'alarme

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EP (1) EP1906371B1 (fr)
AT (1) ATE529845T1 (fr)
IE (2) IE20070675A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7893825B2 (en) 2007-11-20 2011-02-22 Universal Security Instruments, Inc. Alarm origination latching system and method
DE102009060418A1 (de) * 2009-12-22 2011-06-30 Minimax GmbH & Co. KG, 23843 Prüfeinrichtung für Gefahrenmeldeanlagen
EP2575114B1 (fr) 2011-09-30 2015-01-21 E.I. Technology Limited Contrôleur d'alarme
EP2843636B1 (fr) 2013-08-23 2018-06-13 E.I. Technology Surveillance et commande de systèmes d'alarme
CN103473879B (zh) * 2013-09-18 2015-06-10 上海贝岭股份有限公司 一种用于光电式烟雾报警器的静音电路
CN107085929A (zh) * 2017-05-17 2017-08-22 深圳市芯安智能安防科技有限公司 一种非接触式产品检测装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006044358A2 (fr) * 2004-10-15 2006-04-27 Ranco Incorporated Of Delaware Circuit est procédé d'établissement des priorités entre des messages de situations dangereuses pour des détecteurs de situations dangereuses interconnectés

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5705979A (en) * 1995-04-13 1998-01-06 Tropaion Inc. Smoke detector/alarm panel interface unit
US6791453B1 (en) * 2000-08-11 2004-09-14 Walter Kidde Portable Equipment, Inc. Communication protocol for interconnected hazardous condition detectors, and system employing same
US6611204B2 (en) * 2001-04-16 2003-08-26 Maple Chase Company Hazard alarm, system, and communication therefor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006044358A2 (fr) * 2004-10-15 2006-04-27 Ranco Incorporated Of Delaware Circuit est procédé d'établissement des priorités entre des messages de situations dangereuses pour des détecteurs de situations dangereuses interconnectés

Also Published As

Publication number Publication date
IE20070675A1 (en) 2008-04-30
ATE529845T1 (de) 2011-11-15
EP1906371A3 (fr) 2010-03-24
EP1906371A2 (fr) 2008-04-02
IES20070677A2 (en) 2008-04-30

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