WO2005069240A2 - Fire detector - Google Patents

Fire detector Download PDF

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Publication number
WO2005069240A2
WO2005069240A2 PCT/ZA2004/000160 ZA2004000160W WO2005069240A2 WO 2005069240 A2 WO2005069240 A2 WO 2005069240A2 ZA 2004000160 W ZA2004000160 W ZA 2004000160W WO 2005069240 A2 WO2005069240 A2 WO 2005069240A2
Authority
WO
WIPO (PCT)
Prior art keywords
fire
battery
detection system
detector
charger
Prior art date
Application number
PCT/ZA2004/000160
Other languages
French (fr)
Other versions
WO2005069240A3 (en
Inventor
Dunstan Walter Runciman
Colin William Peter Attwell
Original Assignee
Dunstan Walter Runciman
Colin William Peter Attwell
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 Dunstan Walter Runciman, Colin William Peter Attwell filed Critical Dunstan Walter Runciman
Publication of WO2005069240A2 publication Critical patent/WO2005069240A2/en
Publication of WO2005069240A3 publication Critical patent/WO2005069240A3/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/02—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which an auxiliary distribution system and its associated lamps are brought into service
    • 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
    • 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
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources

Definitions

  • THIS INVENTION relates to a fire detector. More particularly, the invention relates to an integrated fire detector and emergency lighting system.
  • BACKGROUND TO THE INVENTION Most modern buildings have a fire alarm system installed. Conventional systems comprise detectors throughout the building, the detectors having a pre-set threshold and going into an alarm condition when the threshold is exceeded.
  • the detector might be a smoke detector which operates at a certain obscuration percentage.
  • Intelligent fire detection systems have control panels which "talk" continuously to the detectors of the system, monitoring their status and many other parameters. In such a system the detectors do not establish an alarm condition. They merely provide information. The panel makes the decision on whether to establish an alarm condition.
  • Applicant is aware that buildings are often provided with emergency lighting systems that are activated in the event of a power failure.
  • the wiring for such a system extends throughout the building and Applicant is aware of a proposal to use the existing wiring of an emergency lighting system as the wiring of a fire detection system. More specifically, detectors are connected to the wiring at spaced locations throughout the building.
  • a fire detector which includes an emergency light, a battery and a charger for the battery, the emergency light being a high illumination light emitting diode.
  • a fire detection system comprising wiring extending through the premises to be protected, fire detectors connected to said wiring, some or all of the fire detectors including an emergency light, a battery and a charger for the battery, the emergency light being a high illumination light emitting diode.
  • the power supply and communications channels of the existing fire detection system may be used to control the emergency light.
  • the emergency light may be powered by a trickle charge from the power supply of the existing fire detection system. In this way the battery is kept charged so as to power the emergency light when it is required to be used in an emergency.
  • FIG. 1 is a schematic view of a first embodiment of the fire detector according to the invention
  • Figure 2 is a schematic view of a second embodiment of the fire detector
  • Figure 3 shows a schematic view of a third embodiment of the fire detector.
  • a fire detector 10 according to a first embodiment of the invention is shown in Figure 1.
  • the fire detector 10 has a casing 12 within which there are means to detect the presence of gaseous products of combustion such as, for example, carbon dioxide (C0 2 ), carbon monoxide (CO), hydro-carbonatious gasses or water (H 2 0).
  • the fire detector 10 may also include means to detect heat and/or the rate of heat exchange, optical obscuration and/or optical scatter, ionised particles, thermal imaging and/or pyro-electric detection or any other means of fire detection.
  • a high illumination intensity low voltage light emitting diode (LED) 14 is provided and a battery 18 is located in the casing of the fire detector.
  • the LED is preferably a white or near-white LED and there may be a plurality of LEDs located in the housing. The LEDs provide illumination, under certain conditions, to a specific area in which a fire detection system has been installed.
  • the casing 12 also includes a battery charger 20 connected to the power supply of the fire detection system.
  • the conditions under which the LEDs in the fire detector 10 provide iilumination are, for example, for area illumination in the event of a mains power failure in that area and for illumination to indicate a detected fire condition as a means to alert hearing impaired persons to the emergency condition.
  • the condition of the batteries can be monitored by the fire panel during the normal functioning of the fire detecting system.
  • the white LED in the fire detector 10 or in a plurality of fire detectors 10 may be turned on or off as dictated by the programmed logic contained within the fire detection system control panel.
  • the emergency illumination may be provided at, for example, full intensity and continuously for an initial period of fifteen to twenty minutes, at reduced intensity continuously for a subsequent period of a further twenty minutes, and a flashing on and off duty cycle for two seconds on or two seconds off until the battery is discharged.
  • FIG. 2 a second embodiment of the fire detector 22 is shown which has its LED 24, battery 26 and charger 28 located in the ceiling mounted base 30 to which the detector casing 32 is fitted.
  • FIG. 3 a third embodiment of the fire detector 34 is shown which has the LED, battery and charger incorporated into a separate unit generally designated 36 located behind the mounting base 38 to which the detector casing 40 is fitted.
  • the LEDs are shown at 42.
  • a transparent or translucent cover can fit over the LED to scatter or direct the light as required.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Fire Alarms (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

A fire detector (10) including a rechargeable battery (18), a charger (20) for the battery (18), a high intensity light emitting diode (14) is disclosed. The detector is used in a fire alarm system having a fire panel. The panel monitors the battery condition, and a signal from the panel switches on the light.

Description

FIRE DETECTOR
FIELD OF THE INVENTION THIS INVENTION relates to a fire detector. More particularly, the invention relates to an integrated fire detector and emergency lighting system.
BACKGROUND TO THE INVENTION Most modern buildings have a fire alarm system installed. Conventional systems comprise detectors throughout the building, the detectors having a pre-set threshold and going into an alarm condition when the threshold is exceeded. For example, the detector might be a smoke detector which operates at a certain obscuration percentage.
Intelligent fire detection systems have control panels which "talk" continuously to the detectors of the system, monitoring their status and many other parameters. In such a system the detectors do not establish an alarm condition. They merely provide information. The panel makes the decision on whether to establish an alarm condition.
Applicant is aware that buildings are often provided with emergency lighting systems that are activated in the event of a power failure. The wiring for such a system extends throughout the building and Applicant is aware of a proposal to use the existing wiring of an emergency lighting system as the wiring of a fire detection system. More specifically, detectors are connected to the wiring at spaced locations throughout the building.
BRIEF DESCRIPTION OF THE INVENTION According to one aspect of the present invention there is provided a fire detector which includes an emergency light, a battery and a charger for the battery, the emergency light being a high illumination light emitting diode.
According to a further aspect of the present invention there is provided a fire detection system comprising wiring extending through the premises to be protected, fire detectors connected to said wiring, some or all of the fire detectors including an emergency light, a battery and a charger for the battery, the emergency light being a high illumination light emitting diode.
The power supply and communications channels of the existing fire detection system may be used to control the emergency light. The emergency light may be powered by a trickle charge from the power supply of the existing fire detection system. In this way the battery is kept charged so as to power the emergency light when it is required to be used in an emergency.
BRIEF DESCRIPTION OF THE DRAWINGS For a better understanding of the present invention, and to show how the same may be carried into effect, reference will now be made, by way of example, to the accompanying drawings in which:- Figure 1 is a schematic view of a first embodiment of the fire detector according to the invention; Figure 2 is a schematic view of a second embodiment of the fire detector; and Figure 3 shows a schematic view of a third embodiment of the fire detector.
DETAILED DESCRIPTION OF THE DRAWINGS A fire detector 10 according to a first embodiment of the invention is shown in Figure 1. The fire detector 10 has a casing 12 within which there are means to detect the presence of gaseous products of combustion such as, for example, carbon dioxide (C02), carbon monoxide (CO), hydro-carbonatious gasses or water (H20). The fire detector 10 may also include means to detect heat and/or the rate of heat exchange, optical obscuration and/or optical scatter, ionised particles, thermal imaging and/or pyro-electric detection or any other means of fire detection.
A high illumination intensity low voltage light emitting diode (LED) 14 is provided and a battery 18 is located in the casing of the fire detector. The LED is preferably a white or near-white LED and there may be a plurality of LEDs located in the housing. The LEDs provide illumination, under certain conditions, to a specific area in which a fire detection system has been installed. The casing 12 also includes a battery charger 20 connected to the power supply of the fire detection system.
The conditions under which the LEDs in the fire detector 10 provide iilumination are, for example, for area illumination in the event of a mains power failure in that area and for illumination to indicate a detected fire condition as a means to alert hearing impaired persons to the emergency condition. By making use of a sequential flashing of the LEDs of a plurality of fire detectors an indication can be given of the general direction of evacuation towards a safe exit in the event of a fire condition being detected.
The condition of the batteries can be monitored by the fire panel during the normal functioning of the fire detecting system.
During emergency conditions, under the programmable control of the fire detection system, the white LED in the fire detector 10 or in a plurality of fire detectors 10, may be turned on or off as dictated by the programmed logic contained within the fire detection system control panel. The emergency illumination may be provided at, for example, full intensity and continuously for an initial period of fifteen to twenty minutes, at reduced intensity continuously for a subsequent period of a further twenty minutes, and a flashing on and off duty cycle for two seconds on or two seconds off until the battery is discharged.
In Figure 2 a second embodiment of the fire detector 22 is shown which has its LED 24, battery 26 and charger 28 located in the ceiling mounted base 30 to which the detector casing 32 is fitted.
In Figure 3 a third embodiment of the fire detector 34 is shown which has the LED, battery and charger incorporated into a separate unit generally designated 36 located behind the mounting base 38 to which the detector casing 40 is fitted. The LEDs are shown at 42.
In all forms a transparent or translucent cover can fit over the LED to scatter or direct the light as required.

Claims

CLAIMS:
1. A fire detector which includes an emergency light, a battery and a charger for the battery, the emergency light being a high illumination light emitting diode.
2. A fire detection system comprising a fire panel and wiring extending through the premises to be protected, fire detectors connected to said wiring, some or all of the fire detectors including an emergency light, a battery and a charger for the battery, the emergency light being a high illumination light emitting diode.
3. A fire detection system as claimed in claim 2, and which has a power supply, the battery charger being connected to the power supply of the fire detection system thereby to trickle charge the battery.
4. A fire detection system as claimed in claim 2 or 3, wherein said high illumination light emitting diode is connected so that it can be switched on by a signal from the fire panel.
5. A fire detection system as claimed in claim 2, 3 or 4, wherein said fire panel includes means for monitoring the state of charge of the batteries of the fire detectors.
PCT/ZA2004/000160 2003-12-22 2004-12-21 Fire detector WO2005069240A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200309883 2003-12-22
ZA2003/9883 2003-12-22

Publications (2)

Publication Number Publication Date
WO2005069240A2 true WO2005069240A2 (en) 2005-07-28
WO2005069240A3 WO2005069240A3 (en) 2005-08-25

Family

ID=34795959

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2004/000160 WO2005069240A2 (en) 2003-12-22 2004-12-21 Fire detector

Country Status (1)

Country Link
WO (1) WO2005069240A2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009017213A1 (en) * 2009-04-09 2010-10-14 Uwe Lindner Emergency light for lighting surrounding area in emergency or dangerous situation, is connected with power supply in normal operation and has light emission device
WO2016042169A1 (en) * 2014-09-19 2016-03-24 Pwi-Pure System Ag Safety system
EP2779124A3 (en) * 2013-03-14 2016-10-12 Kidde Technologies, Inc. Thermal event detection and notification system
EP3779914A4 (en) * 2018-03-29 2021-05-05 Panasonic Intellectual Property Management Co., Ltd. Acoustic device, control method and program

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531114A (en) * 1982-05-06 1985-07-23 Safety Intelligence Systems Intelligent fire safety system
US5493272A (en) * 1990-12-07 1996-02-20 G. P. B. Beghelli S.R.L. Emergency lighting system with alarm for fire, gas and ambient air pollution with automatic monitoring and battery recharging
US5905438A (en) * 1997-01-10 1999-05-18 Micro Weiss Electronics Remote detecting system and method
WO2000014693A1 (en) * 1998-09-09 2000-03-16 Siemens Building Technologies Ag Fire alarm and fire alarm system
WO2000022588A1 (en) * 1998-10-15 2000-04-20 Acbond Limited Improvements in and relating to electrical accessories

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531114A (en) * 1982-05-06 1985-07-23 Safety Intelligence Systems Intelligent fire safety system
US5493272A (en) * 1990-12-07 1996-02-20 G. P. B. Beghelli S.R.L. Emergency lighting system with alarm for fire, gas and ambient air pollution with automatic monitoring and battery recharging
US5905438A (en) * 1997-01-10 1999-05-18 Micro Weiss Electronics Remote detecting system and method
WO2000014693A1 (en) * 1998-09-09 2000-03-16 Siemens Building Technologies Ag Fire alarm and fire alarm system
WO2000022588A1 (en) * 1998-10-15 2000-04-20 Acbond Limited Improvements in and relating to electrical accessories

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009017213A1 (en) * 2009-04-09 2010-10-14 Uwe Lindner Emergency light for lighting surrounding area in emergency or dangerous situation, is connected with power supply in normal operation and has light emission device
DE102009017213B4 (en) * 2009-04-09 2012-08-02 Uwe Lindner Emergency light with intelligent additional modules
EP2779124A3 (en) * 2013-03-14 2016-10-12 Kidde Technologies, Inc. Thermal event detection and notification system
WO2016042169A1 (en) * 2014-09-19 2016-03-24 Pwi-Pure System Ag Safety system
EP3779914A4 (en) * 2018-03-29 2021-05-05 Panasonic Intellectual Property Management Co., Ltd. Acoustic device, control method and program

Also Published As

Publication number Publication date
WO2005069240A3 (en) 2005-08-25

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