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FR2791452B1 - DEVICE FOR MONITORING A GROUP OF INDIVIDUALS BY RADIO-FREQUENCY - Google Patents

DEVICE FOR MONITORING A GROUP OF INDIVIDUALS BY RADIO-FREQUENCY

Info

Publication number
FR2791452B1
FR2791452B1 FR9903758A FR9903758A FR2791452B1 FR 2791452 B1 FR2791452 B1 FR 2791452B1 FR 9903758 A FR9903758 A FR 9903758A FR 9903758 A FR9903758 A FR 9903758A FR 2791452 B1 FR2791452 B1 FR 2791452B1
Authority
FR
France
Prior art keywords
individuals
radio
monitoring
frequency
group
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.)
Expired - Fee Related
Application number
FR9903758A
Other languages
French (fr)
Other versions
FR2791452A1 (en
Inventor
Catherine Claude Mari Coutelou
Xavier Constant Guy Delattre
Jeremie Koffi Nicolas Sylv Yao
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.)
Individual
Original Assignee
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 to FR9903758A priority Critical patent/FR2791452B1/en
Publication of FR2791452A1 publication Critical patent/FR2791452A1/en
Application granted granted Critical
Publication of FR2791452B1 publication Critical patent/FR2791452B1/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
    • G08B21/0227—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
    • G08B21/0288—Attachment of child unit to child/article

Landscapes

  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
FR9903758A 1999-03-22 1999-03-22 DEVICE FOR MONITORING A GROUP OF INDIVIDUALS BY RADIO-FREQUENCY Expired - Fee Related FR2791452B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9903758A FR2791452B1 (en) 1999-03-22 1999-03-22 DEVICE FOR MONITORING A GROUP OF INDIVIDUALS BY RADIO-FREQUENCY

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9903758A FR2791452B1 (en) 1999-03-22 1999-03-22 DEVICE FOR MONITORING A GROUP OF INDIVIDUALS BY RADIO-FREQUENCY

Publications (2)

Publication Number Publication Date
FR2791452A1 FR2791452A1 (en) 2000-09-29
FR2791452B1 true FR2791452B1 (en) 2002-01-18

Family

ID=9543646

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9903758A Expired - Fee Related FR2791452B1 (en) 1999-03-22 1999-03-22 DEVICE FOR MONITORING A GROUP OF INDIVIDUALS BY RADIO-FREQUENCY

Country Status (1)

Country Link
FR (1) FR2791452B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006133487A1 (en) * 2005-06-14 2006-12-21 Adina Resources Pty Ltd Method and means for tracking people and objects with active tags
WO2017029656A1 (en) * 2015-08-19 2017-02-23 Daniel Hatzav Systems and methods for detecting a missing group member

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4675656A (en) * 1984-03-16 1987-06-23 Narcisse Bernadine O Out-of-range personnel monitor and alarm
US4885571A (en) * 1986-04-15 1989-12-05 B. I. Incorperated Tag for use with personnel monitoring system
HUT43774A (en) * 1986-05-15 1987-11-30 Koezponti Banyaszati Fejleszte Method and apparatus for automatic identification living beings and objects
US4980671A (en) * 1989-04-26 1990-12-25 Guardian Technologies, Inc. Remote confinement system with timed tamper signal reset
CA2212009C (en) * 1995-02-24 2005-05-10 Ntp Incorporated Radio tracking system and method of operation thereof
US5745037A (en) * 1996-06-13 1998-04-28 Northrop Grumman Corporation Personnel monitoring tag
US5771002A (en) * 1997-03-21 1998-06-23 The Board Of Trustees Of The Leland Stanford Junior University Tracking system using radio frequency signals

Also Published As

Publication number Publication date
FR2791452A1 (en) 2000-09-29

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Legal Events

Date Code Title Description
TQ Partial transmission of property
ST Notification of lapse