CA2513733A1 - Security and tracking system - Google Patents

Security and tracking system Download PDF

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Publication number
CA2513733A1
CA2513733A1 CA002513733A CA2513733A CA2513733A1 CA 2513733 A1 CA2513733 A1 CA 2513733A1 CA 002513733 A CA002513733 A CA 002513733A CA 2513733 A CA2513733 A CA 2513733A CA 2513733 A1 CA2513733 A1 CA 2513733A1
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CA
Canada
Prior art keywords
signaling
location
signaling unit
units
security
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
CA002513733A
Other languages
French (fr)
Other versions
CA2513733C (en
Inventor
Benedict Curatolo
Thomas Cornelius
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.)
C2 Global Technologies Inc USA
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Individual
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 Individual filed Critical Individual
Priority claimed from PCT/US2003/001774 external-priority patent/WO2004068387A1/en
Publication of CA2513733A1 publication Critical patent/CA2513733A1/en
Application granted granted Critical
Publication of CA2513733C publication Critical patent/CA2513733C/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
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/028—Communication between parent and child units via remote transmission means, e.g. satellite network
    • G08B21/0283—Communication between parent and child units via remote transmission means, e.g. satellite network via a telephone network, e.g. cellular GSM
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/14—Receivers specially adapted for specific applications
    • G01S19/17—Emergency applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0018—Transmission from mobile station to base station
    • G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0205—Specific application combined with child monitoring using a transmitter-receiver system
    • G08B21/0211—Combination with medical sensor, e.g. for measuring heart rate, temperature
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0205—Specific application combined with child monitoring using a transmitter-receiver system
    • G08B21/0213—System disabling if a separation threshold is exceeded
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0227—System arrangements with a plurality of child units
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/023—Power management, e.g. system sleep and wake up provisions
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/028—Communication between parent and child units via remote transmission means, e.g. satellite network
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S2205/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S2205/001—Transmission of position information to remote stations
    • G01S2205/008—Transmission of position information to remote stations using a mobile telephone network

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cardiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Alarm Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

A security and tracking apparatus includes at least a first signaling unit (101) and a second signaling unit (106) in communicating proximity with the first signaling unit, each signaling unit having a receiver (111) for identifying the location of the signaling unit; and, a transmitter (112) for transmitting the location of the signaling unit when the first and second signaling units are separated by more than a preselected distance. A method to locate a person, animal, or object, includes providing in contact with or at least in close proximity to the person, the animal, or the object, at least a first signaling unit (101) and a second signaling unit (106), the second signaling unit in communicating proximity with said first signaling unit, ea ch signaling unit having a receiver (111) for identifying the location of the signaling unit and a transmitter (112) for transmitting the location of the signaling unit when the first and second signaling units are separated more than a preselected distance; and activating the signaling units to transmit the location of the signaling units.

Claims (70)

1. A security and tracking apparatus comprising at least a first signaling unit and a second signaling unit in communicating proximity with the first signaling unit, each said signaling unit having a receiver for identifying the location of said signaling unit; and, a transmitter for transmitting the location of said signaling unit when the first and second signaling units are separated by more than a preselected distance.
2. The security and tracking apparatus of claim 1, wherein said transmitter is automatically activated when the first and second signaling units are separated by more than the preselected distance.
3. The security and tracking apparatus of claim 1, including a receiver for receiving an initiating signal for activating the transmission of information identifying the location of the signaling units.
4. The security and tracking apparatus of claim 1, including a microcontroller for initiating the transmission of information identifying the location of the signaling units by at least one of the signaling units.
5. The security and tracking apparatus of claim 1, wherein at least one of the signaling units is adapted to be hidden.
6. The security and tracking apparatus of claim 1, wherein the receiver for identifying the location of the signaling units includes an antenna for communicating with the global positioning satellite (GPS) system or with low earth orbit satellites.
7. The security and tracking apparatus of claim 1, wherein the transmitter for identifying the location of the signaling units includes a transceiver for communicating with a cellular network.
8. The security and tracking apparatus of claim 1, wherein at least one of the signaling units is in a passive mode when said signaling units are in communicating proximity.
9. The security and tracking apparatus of claim 1, wherein at least one said signaling unit is small enough to be able to be hidden in a wearable article.
10. The security and tracking apparatus of claim 9, wherein at least one said signaling unit is incorporated into at least one of an article of clothing, a shoe, a watch, a wristband, a bracelet, an identification card, an article of jewelry, a hair accessory, eyeglasses, and an animal collar.
11. The security and tracking apparatus of claim 1, wherein at least one said signaling unit is incorporated into at least one of a molded article, an extruded article, and a sewn article.
12. The security and tracking apparatus of claim 1, wherein at least one signaling unit is incorporated into at least one of a credit card, a wallet, a checkbook, a purse, a cellular phone, a pager, a motor vehicle, a boat, an aircraft, a television, a radio, a stereo, a tape player, a compact disc player, a DVD player, an MP3 player, a VCR, a camera, a movie camera, a computer, a printer, a laptop or notebook computer, a PDA or PocketPC, a briefcase, a suitcase, a backpack, a weapon, an article of clothing, an article of jewelry, and an article of artwork.
13. A security and tracking system comprising at least a first signaling unit and a second signaling unit in communicating proximity with the first signaling unit, each said signaling unit having a receiver for identifying the location of said signaling unit; and, a transmitter for transmitting the location of said signaling unit when the first and second signaling units are separated by more than a preselected distance; and a monitoring station capable of receiving information identifying the location of said signaling units.
14. The security and tracking system of claim 13 wherein the monitoring station comprises a computer.
15. The security and tracking system of claim 13, wherein said monitoring station includes a transmitter for transmitting information identifying the location of the signaling units from the monitoring station to a remote receiver.
16. The security and tracking system of claim 15, wherein the transmitter is adapted for communication selected from the group consisting of at least one of radio, wireless, cellular, Internet, telephonic, television, or satellite.
17. The security and tracking system of claim 15, wherein the location of the remote receiver is one of a law enforcement agency facility, a law enforcement vehicle, an emergency response vehicle, and an emergency care facility.
18. The security and tracking system of claim 13 wherein the monitoring station comprises a cellular phone, a PDA or PocketPC, a computer, or a combination thereof.
19. The security and tracking system of claim 13, wherein the receiver for identifying the location of the signaling units includes an antenna for communicating with the global positioning satellite (GPS) system.
20. The security and tracking system of claim 13, wherein the transmitter for identifying the location of the signaling units includes a transceiver for communicating with a cellular network.
21. A method to locate a person, animal, or object, comprising:
(a) providing in contact with or at least in close proximity to the person, the animal, or the object, at least a first signaling unit and a second signaling unit, said second signaling unit in communicating proximity with said first signaling unit, each said signaling unit having a receiver for identifying the location of said signaling unit and a transmitter for transmitting the location of said signaling unit when the first and second signaling units are separated more than a preselected distance; and (b) activating the signaling units to transmit the location of the signaling units.
22. The method of claim 21, including automatically activating the transmission of the location of the signaling units when said signaling units are separated by more than the preselected distance.
23. The method of claim 21, including initiating the transmission of information identifying the location of the signaling units upon receiving instructions from a remote source.
24. The method of claim 21, including signaling the units from a monitoring station to initiate the transmission of information identifying the location of the signaling units.
25 25. The method of claim 21, including activating at least one of the signaling units to initiate the transmission of information identifying the location of the signaling unit.
26. The method of claim 21, including receiving the location of the signaling units from the global positioning satellite (GPS) system.
27. The method of claim 21, including operating at least one of the signaling units in a passive mode when said signaling units are in communicating proximity.
28. The method of claim 21, including continuously transmitting the information identifying the location of at least one of the signaling units.
29. The method of claim 21, including intermittently transmitting the information identifying the location of at least one of the signaling units.
30. The method of claim 21, including transmitting in an encrypted form the information identifying the location of the signaling units.
31. The method of claim 21, including transmitting the information identifying the location of the signaling units to a monitoring station.
32. The method of claim 31, including transmitting the information identifying the location of the signaling units from the monitoring station to a remote receiver.
33. The method of claim 32, including transmitting additional information from the monitoring station to a remote receiver.
34. The method of claim 33, including transmitting the description of the person, the animal, or the object from the monitoring station to a remote receiver.
35. The method of claim 32, including transmitting the information identifying the location of the signaling units from the monitoring station to a remote receiver using communication selected from the group consisting of radio, the internet, a telephone network, a cellular network, television, and satellite.
36. The method of claim 21, wherein at least one signaling unit is small, and wherein providing said signaling unit includes hiding said small unit in a wearable article.
37. A method of locating a person, animal or object comprising:
a) providing an apparatus adapted to be in contact or at least in close proximity to the person, the animal or the object, the apparatus comprising at least a first signaling unit and a second signaling unit in communicating proximity with the first signaling unit, each said signaling unit having a receiver for identifying the location of said signaling unit; and, a transmitter for transmitting the location of said signaling unit when the first and second signaling units are separated by more than a preselected distance;
b) communicating between each signaling unit to determine whether said signaling units are separated by more than the preselected distance; and c) upon determining that said signaling units are separated by more than the preselected distance, transmitting the location of the signaling units to a monitoring station, optionally activating said signaling unit that may be in a passive mode to transmit its location to the monitoring station.
38. The method of claim 37 including transmitting the location of the signaling units, and optionally, additional information, to a remote receiver.
39. The method of claim 37 including communicating between each signaling unit at least periodically.
40. The method of claim 37 including communicating between each signaling unit continuously.
41. The method of claim 37 including communicating between each signaling unit upon demand from the monitoring station.
42. The method of claim 37 including transmitting the location of the signaling units upon demand from the person.
43. The method of claim 37 including logging the location of the signaling units in a database associated with the identification and optionally other information associated with the person, the animal or the object.
44. The method of claim 37 including identifying the location of said signaling unit using a GPS receiver.
45. The method of claim 37 including transmitting the location of said signaling unit using a cellular transceiver.
46. The method of claim 37 including monitoring a physical function for transmitting a signal associated with an emergency condition.
47. The method of claim 37 including transmitting the location of said signaling unit to the monitoring station upon loss of communication with the other signaling unit.
48. A method of locating a person, animal or object comprising:
a) providing an apparatus adapted to be in contact or at least in close proximity to the person, the animal or the object, the apparatus comprising at least a first signaling unit and a second signaling unit in proximity with the first signaling unit, each said signaling unit having a receiver for identifying the location of said signaling unit; and, a transmitter for transmitting the location of said signaling unit;
b) transmitting the location of each of the signaling units to a monitoring station;
c) calculating whether said signaling units are separated by more than a preselected distance; and d) upon calculating that said signaling units are separated by more than the preselected distance, initiating at least frequent or continuous transmission of location from each signaling unit, optionally activating said signaling unit that may be in a passive mode to transmit its location to the monitoring station.
49. The method of claim 48 including transmitting the location of the signaling units, and optionally, additional information, to a remote receiver.
50. The method of claim 48 including transmitting the location of each of the signaling units to the monitoring station upon demand from the monitoring station.
51. The method of claim 48 including transmitting the location of the signaling units upon demand from the person.
52. The method of claim 48 including transmitting the location of at least one said signaling unit to the monitoring station upon demand from the monitoring station upon loss of transmission from the other signaling unit.
53. The method of claim 48 including logging the location of the signaling units in a database associated with the identification and optionally other information associated with the person, the animal or the object.
54. The method of claim 48 including identifying the location of said signaling units using a GPS receiver.
55. The method of claim 48 including transmitting the location of said signaling units using a cellular transceiver.
56. The method of claim 48 including monitoring a physical function for transmitting a signal associated with an emergency condition.
57. A security and tracking apparatus for a person, an animal or an object comprising at least a first signaling unit and a second signaling unit adapted to be hidden in contact or in close proximity to the person, the animal or the object, the second signaling unit in communicating proximity with the first signaling unit, each said signaling unit having a GPS
receiver for identifying the location of said signaling unit; and, a cellular transceiver for transmitting the location of said signaling unit when the first and second signaling units are separated by more than a preselected distance.
58. The security and tracking apparatus of claim 57 wherein each said signaling unit is adapted to activate its cellular transceiver to transmit the location of said signaling unit to a monitoring station under at least one of the following conditions:
a) automatically when the first and second signaling units are separated by more than a preselected distance, b) upon demand from the monitoring station, c) upon demand from the person, d) upon loss or absence of communication from the other signaling unit, or e) upon preselected intervals;
wherein the monitoring station optionally comprises a cellular phone, a PDA or PocketPC, a computer, or a combination thereof.
59. The security and tracking apparatus of claim 57, wherein each said signaling unit has a low power RF transceiver for communication with the other signaling unit.
60. The security and tracking apparatus of claim 57, wherein at least one said signaling unit is incorporated into at least one of an article of clothing, a shoe, a watch, a wristband, a bracelet, an identification card, an article of jewelry, a hair accessory, eyeglasses, and an animal collar.
61. The security and tracking apparatus of claim 57, wherein at least one signaling unit is incorporated into at least one of a credit card, a wallet, a checkbook, a purse, a cellular phone, a pager, a motor vehicle, a boat, an aircraft, a television, a radio, a stereo, a tape player, a compact disc player, a DVD player, an MP3 player, a VCR, a camera, a movie camera, a computer, a printer, a laptop or notebook computer, a PDA or PocketPC, a briefcase, a suitcase, a backpack, a weapon, an article of clothing, an article of jewelry, and an article of artwork.
62. The security and tracking apparatus of claim 57, wherein at least one signaling unit is incorporated into a watch.
63. The security and tracking apparatus of claim 57, wherein at least one signaling unit is incorporated into a cellular phone.
64. The security and tracking apparatus of claim 57, wherein at least one signaling unit is incorporated into a pager.
65. The security and tracking apparatus of claim 57, wherein at least one signaling unit additionally comprises a monitoring station adapted to generate a signal to notify the person of the other signaling unit being separated by more than a preselected distance.
66. The security and tracking apparatus of claim 57, wherein at least one signaling unit additionally is adapted to monitor and report at least one physical condition of the person.
67. The security and tracking apparatus of claim 57, wherein said signaling units are powered by a power source selected from the group consisting of rechargeable battery, replaceable battery, solar cell, kinetic power device, or combinations thereof.
68. The method of claim 48 wherein said calculating is processed by at least one said signaling unit.
69. The method of claim 48 wherein said calculating is processed by the monitoring station.
70. The security and tracking apparatus of claim 1 wherein at least one said signaling unit is capable of secondary operations, optionally including at least one of receiving or transmitting video signals or audio signals, disabling a firearm, or disabling a motor vehicle.
CA2513733A 2003-01-20 2003-01-20 Security and tracking system Expired - Fee Related CA2513733C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2003/001774 WO2004068387A1 (en) 1999-03-31 2003-01-20 Security and tracking system

Publications (2)

Publication Number Publication Date
CA2513733A1 true CA2513733A1 (en) 2004-08-12
CA2513733C CA2513733C (en) 2010-10-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2513733A Expired - Fee Related CA2513733C (en) 2003-01-20 2003-01-20 Security and tracking system

Country Status (4)

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EP (1) EP1588310A4 (en)
KR (1) KR100971848B1 (en)
AU (1) AU2003207629A1 (en)
CA (1) CA2513733C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2905760A3 (en) * 2014-02-05 2015-11-11 Honeywell International Inc. System and method for location tagged headcount accounting

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2448743A (en) * 2007-04-26 2008-10-29 Eads Defence And Security Systems Ltd Bi-directional communication in an asset tracking system
KR101023321B1 (en) * 2008-11-12 2011-03-18 이강욱 Apparatus, method and system for searching object by RF communication
KR101039873B1 (en) * 2011-03-02 2011-06-09 (주)한국전산감리원 Electronic anklet notification system and electronic anklet notification method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6518889B2 (en) * 1998-07-06 2003-02-11 Dan Schlager Voice-activated personal alarm
US5982281A (en) 1998-05-02 1999-11-09 Pro Tech Monitoring, Inc. Offender and victim collision avoidance and advanced warning system
US6292747B1 (en) * 2000-04-20 2001-09-18 International Business Machines Corporation Heterogeneous wireless network for traveler information
US20010030603A1 (en) * 2000-06-27 2001-10-18 Susanne Arens System for altering when separated by a preset distance
FR2823484B1 (en) * 2001-04-12 2003-07-11 Time Sport Int ASSEMBLY OF A BICYCLE PEDAL AND A HANGING SHIM, PEDAL AND SHIM OF THIS ASSEMBLY
US6414629B1 (en) * 2001-04-19 2002-07-02 Tektrack, Llc Tracking device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2905760A3 (en) * 2014-02-05 2015-11-11 Honeywell International Inc. System and method for location tagged headcount accounting

Also Published As

Publication number Publication date
AU2003207629A1 (en) 2004-08-23
CA2513733C (en) 2010-10-05
EP1588310A1 (en) 2005-10-26
KR100971848B1 (en) 2010-07-22
EP1588310A4 (en) 2009-04-15
KR20050091786A (en) 2005-09-15

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