WO1993011515A1 - Systeme de securite pour equipement electrique et electronique - Google Patents

Systeme de securite pour equipement electrique et electronique Download PDF

Info

Publication number
WO1993011515A1
WO1993011515A1 PCT/GB1992/002250 GB9202250W WO9311515A1 WO 1993011515 A1 WO1993011515 A1 WO 1993011515A1 GB 9202250 W GB9202250 W GB 9202250W WO 9311515 A1 WO9311515 A1 WO 9311515A1
Authority
WO
WIPO (PCT)
Prior art keywords
mains
equipment
security
security unit
central computer
Prior art date
Application number
PCT/GB1992/002250
Other languages
English (en)
Inventor
Paul Christopher Gilhooley
Original Assignee
Bache, Hugh, Robert, Ian
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 Bache, Hugh, Robert, Ian filed Critical Bache, Hugh, Robert, Ian
Priority to DE69224752T priority Critical patent/DE69224752T2/de
Priority to EP92924781A priority patent/EP0615644B1/fr
Publication of WO1993011515A1 publication Critical patent/WO1993011515A1/fr

Links

Classifications

    • 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
    • G08B26/002—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel only replying the state of the sensor
    • 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
    • G08B25/06—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 power transmission lines

Definitions

  • This invention relates to a security system to protect items of electrical and electronic equipment, particularly computer equipment.
  • each first security unit storing an identity code unique to the associated item of equipment and being coupled to or for
  • each second security unit storing an identity code unique to the associated mains power outlet
  • J a communications interface coupled or for coupling to the mains, the central computer being arranged to poll the security units of one said group by signalling over the mains, the
  • FIGURE 1 is a view of a first security unit for each item of equipment
  • FIGURE 2 is a view of a wall socket incorporating a second security unit
  • FIGURE 3 is a schematic diagram of a security system in accordance with the invention.
  • a security system in accordance with this invention comprises a plurality of first security units 10, one for each item of equipment to be protected, a plurality of second security units 20, one for each mains power outlet socket of the premises in which the items of equipment are located, and a central computer 30 with interface unit 32.
  • the first security unit 10 comprises a housing containing a circuit and a rechargeable supply battery for that circuit, this circuit including a memory storing an identification code unique to the item of equipment which it protects.
  • the unit 10 is permanently fixed to the item of equipment and plugged into the power-in socket of the latter and includes a replacement power-in socket to receive a power lead 12.
  • the power lead 12 is plugged at its other end into a mains power socket 14 of the premises.
  • each second security unit 20 may form an add-on to existing wall sockets e.g. 14, or it may instead by incorporated into a modified wall socket.
  • the unit 20 contains a circuit which includes a memory storing an identity code unique to the mains socket.
  • the central computer 30 is connected to an interface unit 32, which is able to transmit signals from the computer onto the mains and is also able to pick up signals received over the mains and pass these to the computer.
  • the system employs mains signalling at high frequencies, e.g. 500 to 600 Hz although possibly up to 1 MHz.
  • the central computer is arranged to poll in turn each of the items of equipment recorded in its database, by transmitting signals over the mains.
  • its security unit 10 recognises the transmitted signal from the computer as addressing that security unit, and the security unit 10 returns an acknowledgement signal to the central computer as confirmation, by signalling back over the mains.
  • the security unit 20 in the mains outlet socket detects the acknowledgement signal as it passes through that socket, and signals its own identity code back over the mains to the central computer.
  • the central computer can keep an up-to-date record of which items of equipment are plugged into which mains outlet socket.
  • the central computer keeps records of each item of equipment in the premises including identity code, manufacturer, type, serial number etc.

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Power Sources (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

Dans un système de sécurité pour un équipement électrique et électronique, chaque appareil de l'équipement possède un ensemble de sécurité (10) couplé à son entrée de réseau d'alimentation et mémorisant un code d'identité unique pour ledit appareil et chaque prise de sortie du réseau d'alimentation (14) comprend un ensemble de sécurité mémorisant un code d'identité unique pour ladite prise. Un ordinateur central (30) est alimenté à partir du réseau et est conçu pour interroger les ensembles de sécurité (10) des appareils de l'équipement par l'intermédiaire du réseau: l'ensemble de sécurité interrogé (10) envoie un signal d'accusé de réception en retour et ledit signal est détecté par l'ensemble de sécurité de la prise de réseau correspondante (14), ce qui provoque l'émission d'un signal en retour par ledit ensemble indiquant son code d'identité.
PCT/GB1992/002250 1991-12-03 1992-12-03 Systeme de securite pour equipement electrique et electronique WO1993011515A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE69224752T DE69224752T2 (de) 1991-12-03 1992-12-03 Sicherheitssystem für elektrische und elektronische geräte
EP92924781A EP0615644B1 (fr) 1991-12-03 1992-12-03 Systeme de securite pour equipement electrique et electronique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9125647.9 1991-12-03
GB9125647A GB2262372B (en) 1991-12-03 1991-12-03 Security system for electrical and electronic equipment

Publications (1)

Publication Number Publication Date
WO1993011515A1 true WO1993011515A1 (fr) 1993-06-10

Family

ID=10705585

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1992/002250 WO1993011515A1 (fr) 1991-12-03 1992-12-03 Systeme de securite pour equipement electrique et electronique

Country Status (7)

Country Link
EP (1) EP0615644B1 (fr)
AU (1) AU3089592A (fr)
CA (1) CA2125154A1 (fr)
DE (1) DE69224752T2 (fr)
ES (1) ES2115682T3 (fr)
GB (1) GB2262372B (fr)
WO (1) WO1993011515A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2715492A1 (fr) * 1994-01-27 1995-07-28 Bruere Jean Noel Dispositif antivol électronique à codage pour appareils raccordés à un réseau électrique.
WO1996009613A1 (fr) * 1994-09-19 1996-03-28 Hedstroem Mats Holger Goeran Systeme de commande et d'enregistrement

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9624981D0 (en) * 1996-11-30 1997-01-15 Watkins Richard Improvements relating to security systems
GB9714146D0 (en) * 1997-07-05 1997-09-10 Mayburn Ltd Monitoring equipment
US6308272B1 (en) * 1998-12-21 2001-10-23 International Business Machines Corporation Security system using existing network and personal computers
GB2350704A (en) * 1999-06-02 2000-12-06 Nicholas Peter Carter Security system
GB2357612A (en) * 1999-12-21 2001-06-27 Ibm Electronic inventory tag
GB2357611B (en) * 1999-12-21 2004-06-02 Ibm Electronic location tag
GB2358946A (en) * 2000-02-01 2001-08-08 Ravinder S Dosanjh Combating theft of computer equipment and software piracy
GB2362248A (en) * 2000-05-13 2001-11-14 Ibm Power socket for physical asset tracking

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983338A (en) * 1973-09-19 1976-09-28 Mathauser William R Apparatus and method to test the condition of an electrical service line and to determine the presence and/or removal of electrical equipment connected to the line
WO1987001229A1 (fr) * 1985-08-14 1987-02-26 Dunn, Jeffrey Dispositif de securite

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2233485A (en) * 1989-06-23 1991-01-09 James Moore Equipment anti-theft monitor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983338A (en) * 1973-09-19 1976-09-28 Mathauser William R Apparatus and method to test the condition of an electrical service line and to determine the presence and/or removal of electrical equipment connected to the line
WO1987001229A1 (fr) * 1985-08-14 1987-02-26 Dunn, Jeffrey Dispositif de securite

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2715492A1 (fr) * 1994-01-27 1995-07-28 Bruere Jean Noel Dispositif antivol électronique à codage pour appareils raccordés à un réseau électrique.
WO1996009613A1 (fr) * 1994-09-19 1996-03-28 Hedstroem Mats Holger Goeran Systeme de commande et d'enregistrement

Also Published As

Publication number Publication date
AU3089592A (en) 1993-06-28
ES2115682T3 (es) 1998-07-01
GB9125647D0 (en) 1992-01-29
CA2125154A1 (fr) 1993-06-10
GB2262372B (en) 1995-03-22
EP0615644B1 (fr) 1998-03-11
EP0615644A1 (fr) 1994-09-21
GB2262372A (en) 1993-06-16
DE69224752T2 (de) 1998-09-24
DE69224752D1 (de) 1998-04-16

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