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EP0693743A1 - Moyen indicateur - Google Patents

Moyen indicateur Download PDF

Info

Publication number
EP0693743A1
EP0693743A1 EP95304995A EP95304995A EP0693743A1 EP 0693743 A1 EP0693743 A1 EP 0693743A1 EP 95304995 A EP95304995 A EP 95304995A EP 95304995 A EP95304995 A EP 95304995A EP 0693743 A1 EP0693743 A1 EP 0693743A1
Authority
EP
European Patent Office
Prior art keywords
annunciator
switch
door
desired location
indicator means
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Withdrawn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
EP95304995A
Other languages
German (de)
English (en)
Inventor
Christopher Mark Bentley
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.)
Sign & Labels Ltd
Original Assignee
Sign & Labels Ltd
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 Sign & Labels Ltd filed Critical Sign & Labels Ltd
Publication of EP0693743A1 publication Critical patent/EP0693743A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/08—Mechanical actuation by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind

Definitions

  • the invention relates to indicator means, in particular devices operable to indicate when an object which is movable is in a described location.
  • each door on each of its faces
  • a sign or decal indicating that the door is a fire or other form of normally closed safety door and should be kept closed.
  • these signs or decals are increasingly ignored.
  • the present invention provides means for association with an object and operable to indicate if the object is moved from a desired location, said means including an annunciator and drive circuitry therefor, the drive circuitry including a switch which is normally operable to enable the annunciator and which is held in a condition disabling the annunciator when the object is at said desired location.
  • said switch is normally closed and is held open when the object is in said desired location.
  • Said switch may comprise a mechanical switch carried by the object, or an article adjacent the object when the object is at the desired location, and be then engaged by an element associated with the article or with the object.
  • said switch may comprise a magnetic reed switch carried by the object, or an article adjacent the object when the object is at the desired location, and be then held in a condition disabling the annunciator by the action of a magnet supported by the article or object.
  • the drive circuitry includes delay means for delaying operation of the annunciator for a predetermined period after movement of the object from the desired location.
  • the delay means may comprise a timer or counter.
  • the annunciator may incorporate an LED and/or a tone sounder.
  • the LED may be an auto-flashing device.
  • the indicator means may be for mounting on the face of a door with said switch means formed as a magnetic reed switch carried adjacent an edge of the door and normally held open by operation of a magnet mounted in the frame of the doorway, the arrangement being such that the annunciator is disabled when the door is closed and is enabled after the door is opened.
  • the indicator means may be for mounting in a position adjacent a location at which it is desired to store an object, the annunciator means being disabled while said object is at said desired location and enabled should the object be moved from the desired location.
  • the indicator may further include means for relaying a signal to a central location should the annunciator become enabled.
  • Figure 1A shows the casing of an annunciator forming part of an indicator means embodying the present invention to comprise a shallow box 10 with upstanding side walls 12 to which a front plate 14 may be fitted.
  • the front plate 14 is fittable to the side walls 12 of the shallow box 10 by means of vandal proof screws 16 which are used to mount box 10 on a door.
  • the plate 10 carries a decal 18 on its outermost surface indicating that a door on which the annunciator body is mounted is a fire door and should be kept closed.
  • the face plate 14 is pierced by an aperture 20 enabling a flashing LED device within the box 10 to be seen when the LED device enabled.
  • the annunciator body shown in Figure 1A is securable to a fire door 22 - as shown in Figure 2A - by the screws 14 after a cable 24 has been passed through the body of the door 22 from a switch 26 mounted in a side edge of the door.
  • Switch 26 is a normally closed magnetic reed relay switch. Magnet 28 is mounted in the jam 30 of the door frame against which the door 22 closes and proximate the position of the switch 26 when the door is closed.
  • Figures 1B and 2B shows a second form of annunciator body embodying the present invention and in particular shows the body to comprise a plastics material box 10' having side walls 12' and a rear wall 13.
  • the front plate 14' for the annunciator body is held in position in use by being trapped in grooves in return lips 12A on the outer edges of the walls 12' of the body.
  • Screws 16' pass through the rear wall 13 to secure the box 10' on the face of a door 22' at a position approximately 10mm from the free edge of the door.
  • a magnetic reed relay switch 26' is carried by the annunciator body in a wall 12' of box 10' closest to the frame 34' of the door when the door is closed.
  • a user After positioning the annunciator body on the face of the door 22' a user then drills a hole in the frame 34' at a position opposite the reed switch 26' and inserts in it a magnet 28'. It will be appreciated that in this position the magnet 28' is proximate the position of the reed switch 26' when the door is closed.
  • Figure 3A shows circuitry for the annunciator including, to an LED display 40 a tone sounder 42 and a battery 44.
  • Tone sounder 42 may be any suitable device commercially available and the battery 34 preferably comprises one or more long life, lithium batteries.
  • switch 26, 26' when closed, enables operation of the LED display 40 and the tone sounder 42 by completing the circuit of those devices with the battery 44.
  • the annunciator will emit a warning tone (preferably an intermittent buzz) and LED display 40 will become illuminated (preferably this display is a flashing display).
  • a delay may be introduced to the indicator means, for example by providing between switch 26, 26' and the annunciator a Schmitt trigger, a capacitive link, a counter or any other suitable form of delay device. Again the arrangement may be modified by being mains powered and further be arranged to send a signal to a central location if desired.
  • the indicator means is powered from a mains electrical supply via leads 50 which are coupled to an inverter 52 forming part of the indicator.
  • a battery 44 is again provided as a back-up in case of mains power failure.
  • 26' is coupled to enable the LED display 40 and tone sounder 42 but in this arrangement via a delay device 54.
  • the arrangement of Figure 3B also includes an R/F sender 56 enabled with the LED display 40 and tone sounder 42 to emit a radio frequency signal identifying the door.
  • the tone sounder 42 and LED display 40 are enabled and the R/F sender 56 begins emitting a radio frequency signal indicating the door on which the annunciator is mounted is being held open.
  • Figure 3C illustrates a third form of circuit which may be employed in an annunciator embodying the present invention.
  • parts common to Figures 3A and 3B are given the same reference numerals.
  • Power to the integrated circuit 60 is provided by coupling a pin 8 to the positive supply rail 62 and its pin 1 to the negative supply rail 64.
  • the reset pin 4 of the integrated circuit is also coupled, as can be seen, from Figure 3C to the positive rail 64.
  • the threshold and discharge pins 6 and 7 of the integrated circuit are coupled to the junction of a resistor 70 and capacitor 72 running between the rails 62 and 64 and its trigger pin, pin 2, is coupled to the junction of a resistor 74 of capacitor 76 also running between the positive and negative supply rails 60, 62 and 64.
  • Pin 3 the output pin of the integrated circuit, is coupled to the positive supply rail via a tone sounder 42 and LED 40 as shown.
  • the LED device is preferably one such as sold by Messrs. Maplins Electronics of 282-284 London Road, Westcliffe-on-Sea, Essex, England stock code UK30H.
  • the delay given by using a resistor 70 of 106 ohms and a capacitor 72 of 10 x 10 ⁇ 6 Farads will approximate to 11 seconds.
  • a flashing device it will when powered emit a flashing signal and at the same time, by interrupting the current passing therethrough, cause the tone sounder 42 to operate.
  • the values of the resistor 70 may be variable to enable a user to vary the delay before the annunciator operates.
  • annunciator is mounted on the door, on that face of the door which is exposed when the door is open. If desired however the annunciator may be mounted on a wall, ceiling or transom adjacent the door and not on the door itself with the magnet 28, 28' carried by the door.
  • switch 26, 26' is described as being a magnetic reed switch which is normally closed it will be appreciated that the switch may be implemented as any form of suitable switch, for example a simple mechanical switch which is normally closed but which is held open by engagement of part of it and with the jamb adjacent the door.
  • illuminable display other than the LED display described may of course be used and the annunciator may incorporate an illuminable display or an audible display if desired, and not both.
  • the signal is sent to a central location via an R/F sender. If desired this transaction may be performed by hardwiring the annunciator to the central location or by making use of the mains lead 50 bringing power to the device.
  • Arrangements embodying the invention may, for example, be provided adjacent items of equipment normally stored in a particular location and arranged to provide an indication should the item of equipment be moved from that location.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Audible And Visible Signals (AREA)
EP95304995A 1994-07-20 1995-07-18 Moyen indicateur Withdrawn EP0693743A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9414640A GB9414640D0 (en) 1994-07-20 1994-07-20 Indicators
GB9414640 1994-07-20

Publications (1)

Publication Number Publication Date
EP0693743A1 true EP0693743A1 (fr) 1996-01-24

Family

ID=10758619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95304995A Withdrawn EP0693743A1 (fr) 1994-07-20 1995-07-18 Moyen indicateur

Country Status (2)

Country Link
EP (1) EP0693743A1 (fr)
GB (2) GB9414640D0 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10045655A1 (de) * 2000-09-15 2002-04-18 Aeg Hausgeraete Gmbh Einbaukochmulde
EP1449990A1 (fr) * 2003-02-20 2004-08-25 Schotemeier, Ingenieurmetallbau GmbH Méthode et dispositif pour surveiller un édifice
RU186858U1 (ru) * 2018-06-28 2019-02-06 Общество с ограниченной ответственностью "ЕХ-ПРИБОР" Извещатель пожарный ручной
CN114267140A (zh) * 2022-03-01 2022-04-01 西安迈远科技有限公司 一种报警装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9925240D0 (en) * 1999-10-26 1999-12-29 Briggs Leslie G Sensor for security system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4241337A (en) * 1979-03-29 1980-12-23 General Electric Company Appliance door position sensor arrangement
US4896144A (en) * 1988-09-29 1990-01-23 Bogstad Naomi C Hand washing alert
US4910497A (en) * 1988-07-11 1990-03-20 Seachris Harlan E Closure alarm for containment chambers for dangerous materials

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2095448A (en) * 1981-03-25 1982-09-29 Satchwell Controls Ltd Alarm systems
US4427975A (en) * 1981-04-29 1984-01-24 Kinzie James E Unopened-door indicator
DK462484A (da) * 1983-11-17 1985-05-18 Securistyle Ltd Alarmsystem
US4796010A (en) * 1986-07-28 1989-01-03 Bland Robert T Intrusion alarm and automatic illumination system
US4843374A (en) * 1988-03-30 1989-06-27 Sansky Michael J Door annunciator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4241337A (en) * 1979-03-29 1980-12-23 General Electric Company Appliance door position sensor arrangement
US4910497A (en) * 1988-07-11 1990-03-20 Seachris Harlan E Closure alarm for containment chambers for dangerous materials
US4896144A (en) * 1988-09-29 1990-01-23 Bogstad Naomi C Hand washing alert

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10045655A1 (de) * 2000-09-15 2002-04-18 Aeg Hausgeraete Gmbh Einbaukochmulde
EP1449990A1 (fr) * 2003-02-20 2004-08-25 Schotemeier, Ingenieurmetallbau GmbH Méthode et dispositif pour surveiller un édifice
RU186858U1 (ru) * 2018-06-28 2019-02-06 Общество с ограниченной ответственностью "ЕХ-ПРИБОР" Извещатель пожарный ручной
CN114267140A (zh) * 2022-03-01 2022-04-01 西安迈远科技有限公司 一种报警装置

Also Published As

Publication number Publication date
GB9514668D0 (en) 1995-09-13
GB9414640D0 (en) 1994-09-07
GB2291732A (en) 1996-01-31

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Effective date: 19960725