CA2225025A1 - Directional antenna configuration for asset tracking system - Google Patents

Directional antenna configuration for asset tracking system

Info

Publication number
CA2225025A1
CA2225025A1 CA002225025A CA2225025A CA2225025A1 CA 2225025 A1 CA2225025 A1 CA 2225025A1 CA 002225025 A CA002225025 A CA 002225025A CA 2225025 A CA2225025 A CA 2225025A CA 2225025 A1 CA2225025 A1 CA 2225025A1
Authority
CA
Canada
Prior art keywords
antenna configuration
portal
directional antenna
tracking system
asset tracking
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.)
Granted
Application number
CA002225025A
Other languages
French (fr)
Other versions
CA2225025C (en
Inventor
Touraj Ghaffari
Larry Canipe
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.)
Sensormatic Electronics Corp
Original Assignee
Sensormatic Electronics Corporation
Touraj Ghaffari
Larry Canipe
Tyco Acquisition Corp. Xxiv
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 Sensormatic Electronics Corporation, Touraj Ghaffari, Larry Canipe, Tyco Acquisition Corp. Xxiv filed Critical Sensormatic Electronics Corporation
Publication of CA2225025A1 publication Critical patent/CA2225025A1/en
Application granted granted Critical
Publication of CA2225025C publication Critical patent/CA2225025C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2482—EAS methods, e.g. description of flow chart of the detection procedure
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2428—Tag details
    • G08B13/2434—Tag housing and attachment details
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2451—Specific applications combined with EAS
    • G08B13/2462—Asset location systems combined with EAS
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2471—Antenna signal processing by receiver or emitter
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2474—Antenna or antenna activator geometry, arrangement or layout
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/248—EAS system combined with another detection technology, e.g. dual EAS and video or other presence detection system
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2488—Timing issues, e.g. synchronising measures to avoid signal collision, with multiple emitters or a single emitter and receiver

Abstract

A directional antenna configuration (52) for use in an article tracking sytem (50) includes two shorted loops (82, 82'), one on each side of a portal or doorway (68) and in each case circumscribing the portal.
The antenna configuration also includes a respective pair of passage antennas (78 80 and 78, 80') provided on each side of the portal. The passage antennas are all arranged in planes parallel to the path of travel (72) through the doorway. The respective loops confine the effective detection areas of each pair of passage antennas to the respective side of the portal. The antenna configuration permits reliable detection of direction of movement through the portal.
CA002225025A 1995-06-19 1996-06-07 Directional antenna configuration for asset tracking system Expired - Fee Related CA2225025C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/437,946 US5661457A (en) 1995-06-19 1995-06-19 Directional antenna configuration for asset tracking system
US08/437,946 1995-06-19
PCT/US1996/009825 WO1997000503A1 (en) 1995-06-19 1996-06-07 Directional antenna configuration for asset tracking system

Publications (2)

Publication Number Publication Date
CA2225025A1 true CA2225025A1 (en) 1997-01-03
CA2225025C CA2225025C (en) 2005-04-05

Family

ID=23738584

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002225025A Expired - Fee Related CA2225025C (en) 1995-06-19 1996-06-07 Directional antenna configuration for asset tracking system

Country Status (9)

Country Link
US (1) US5661457A (en)
EP (1) EP0834164B1 (en)
JP (1) JP3817740B2 (en)
AR (1) AR002517A1 (en)
AU (1) AU695592B2 (en)
BR (1) BR9609357A (en)
CA (1) CA2225025C (en)
DE (1) DE69635110T2 (en)
WO (1) WO1997000503A1 (en)

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Also Published As

Publication number Publication date
JPH11508383A (en) 1999-07-21
JP3817740B2 (en) 2006-09-06
US5661457A (en) 1997-08-26
AU695592B2 (en) 1998-08-20
AR002517A1 (en) 1998-03-25
EP0834164B1 (en) 2005-08-24
EP0834164A4 (en) 2000-07-05
BR9609357A (en) 1999-05-18
DE69635110D1 (en) 2005-09-29
AU6167396A (en) 1997-01-15
DE69635110T2 (en) 2006-03-02
WO1997000503A1 (en) 1997-01-03
CA2225025C (en) 2005-04-05
EP0834164A1 (en) 1998-04-08

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