GB2295706A - Alarm equipment - Google Patents

Alarm equipment Download PDF

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Publication number
GB2295706A
GB2295706A GB9424073A GB9424073A GB2295706A GB 2295706 A GB2295706 A GB 2295706A GB 9424073 A GB9424073 A GB 9424073A GB 9424073 A GB9424073 A GB 9424073A GB 2295706 A GB2295706 A GB 2295706A
Authority
GB
United Kingdom
Prior art keywords
unit
portable
alarm systems
examination unit
addressable alarm
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Withdrawn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
GB9424073A
Other versions
GB9424073D0 (en
Inventor
Harold Robert Holt
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.)
MERWOOD Ltd
Original Assignee
MERWOOD 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 MERWOOD Ltd filed Critical MERWOOD Ltd
Priority to GB9424073A priority Critical patent/GB2295706A/en
Publication of GB9424073D0 publication Critical patent/GB9424073D0/en
Publication of GB2295706A publication Critical patent/GB2295706A/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • G08B26/001—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Alarm Systems (AREA)

Abstract

A dedicated portable examination unit for use with addressable alarm systems that can be attached to devices 5e within the system to establish read/write communications. <IMAGE>

Description

ALARM EQUIPMENT This invention relates to Alarm Systems.
In particular addressable fire alarms but is not limited to this alone.
Alarm systems that are able to give a precise location of a fire alarm, rely on the detection devices being able to communicate their position within the system to a control panel via an address located either in the detector or its base or a remote module connected to the device, if a device fails to respond then a fault condition will exist on the system, the fault may or may not be within the device itself therefore a means of interrogating the device at the location has a distinct advantage.
According to the present invention there is provided a portable unit, preferably hand held, primarily for interrogating fire alarm devices consisting of a housing to contain the electronics and a visual display for status information etc., a means of connecting the interrogating unit to the device that is to be examined. The present invention may also have the facility to program/re-program fire alarm devices on a stand alone basis.
A specific embodiment of the present invention will now be described by way of example with reference to the accompanying drawing in which: Figure 1 shows in perspective the unit attached to a fire detector head.
Figure 2 shows a control circuit for the unit.
Referring to the drawing the unit comprises a housing la preferably made of a plastic material in the form that is easily held in the hand. The unit incorporates a visual display this may be an LCD module 2b situated in a suitable position for ease of viewing, the unit may also incorporate a means to secure the device that is being examined in a user friendly position as shown in Fig 1 this may take the form of a movable arm 3c formed so as to allow different size and shaped devices to be held in a suitable position whilst being worked on, the movable arm 3c preferably folds away when not in use. Devices are connected preferably via a flexible connection 4d which interconnects between the unit fig 1 and the device 5e under examination, this enables differing shapes of devices to be accommodated whilst the examination is taking place.The flexible connector 4d is preferably a polarised coiled lead with three conductors terminated so as to be releasable connected to the device that is to be examined. The various functions of the unit are accessed via switches or alternatively a key pad 6f as shown in Fig 1, some typical operational functions are as follows: Read/Write, display the address/location, this may be the descriptive address (displayed in ASCII characters) as well as the coded address of the device, communications fail, interrogation of set parameters, fault diagnostics, etc. A hard copy facility may be incorporated within the unit or a print out port may be provided for. This list of functions is not exhaustive and the ability to alter the units operation ie. to add functions so that new devices may be examined would be advantageous, in this example, this may be done by re-programing the microcontroller in the unit.

Claims (7)

- CLAIMS
1 A dedicated portable examination unit for use with addressable alarm systems that can be attached to devices to establish read/write communications
2 A portable examination unit for use with addressable alarm systems as claimed in claim one where the unit is intended as.a stand alone hand held device.
3 A portable examination unit for use with addressable alarm systems as claimed in claim one and claim 2 wherein connection between the unit and the device is via a flexible cable.
4 A portable examination unit for use with addressable alarm systems as claimed in preceding claim wherein the portable unit contains a microprocessor/microcontroller.
5 A portable examination unit for use with addressable alarm systems as claimed in preceding claim wherein the portable unit contains a visual display.
6 A portable examination unit for use with addressable alarm systems as claimed in preceding claim wherein the portable unit contains a printout facility.
7 A portable examination unit substantially as described herein with reference to Figures 1-2 of the accompanying drawing.
GB9424073A 1994-11-29 1994-11-29 Alarm equipment Withdrawn GB2295706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9424073A GB2295706A (en) 1994-11-29 1994-11-29 Alarm equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9424073A GB2295706A (en) 1994-11-29 1994-11-29 Alarm equipment

Publications (2)

Publication Number Publication Date
GB9424073D0 GB9424073D0 (en) 1995-01-18
GB2295706A true GB2295706A (en) 1996-06-05

Family

ID=10765155

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9424073A Withdrawn GB2295706A (en) 1994-11-29 1994-11-29 Alarm equipment

Country Status (1)

Country Link
GB (1) GB2295706A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0872817A1 (en) * 1997-04-17 1998-10-21 Cerberus Ag A hasard warning device and operating module
EP2140432A1 (en) * 2007-04-02 2010-01-06 3M Innovative Properties Company System, method and kit for testing gas monitors

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2039113A (en) * 1978-04-22 1980-07-30 British Leyland Cars Ltd Multiplex wiring system for a vehicle
US4329643A (en) * 1980-03-13 1982-05-11 Neumann Manfred H Portable circuit testing system
EP0133250A1 (en) * 1983-07-22 1985-02-20 Siemens Aktiengesellschaft Danger alarm installation
EP0180423A2 (en) * 1984-10-25 1986-05-07 Sieger Limited A system for remotely adjusting a parameter of an electrical circuit within an enclosure
GB2224144A (en) * 1988-10-20 1990-04-25 Nittan Co Ltd Central monitoring and alarm system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2039113A (en) * 1978-04-22 1980-07-30 British Leyland Cars Ltd Multiplex wiring system for a vehicle
US4329643A (en) * 1980-03-13 1982-05-11 Neumann Manfred H Portable circuit testing system
EP0133250A1 (en) * 1983-07-22 1985-02-20 Siemens Aktiengesellschaft Danger alarm installation
EP0180423A2 (en) * 1984-10-25 1986-05-07 Sieger Limited A system for remotely adjusting a parameter of an electrical circuit within an enclosure
GB2224144A (en) * 1988-10-20 1990-04-25 Nittan Co Ltd Central monitoring and alarm system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0872817A1 (en) * 1997-04-17 1998-10-21 Cerberus Ag A hasard warning device and operating module
EP2140432A1 (en) * 2007-04-02 2010-01-06 3M Innovative Properties Company System, method and kit for testing gas monitors
EP2140432A4 (en) * 2007-04-02 2013-04-03 3M Innovative Properties Co System, method and kit for testing gas monitors

Also Published As

Publication number Publication date
GB9424073D0 (en) 1995-01-18

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)