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FR2407537A1 - Object distance measuring and signalling system - uses transmitter on monitored object and receiver at supervision station - Google Patents

Object distance measuring and signalling system - uses transmitter on monitored object and receiver at supervision station

Info

Publication number
FR2407537A1
FR2407537A1 FR7733476A FR7733476A FR2407537A1 FR 2407537 A1 FR2407537 A1 FR 2407537A1 FR 7733476 A FR7733476 A FR 7733476A FR 7733476 A FR7733476 A FR 7733476A FR 2407537 A1 FR2407537 A1 FR 2407537A1
Authority
FR
France
Prior art keywords
receiver
distance measuring
signalling system
transmitter
supervision station
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Withdrawn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
FR7733476A
Other languages
French (fr)
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.)
BADENS GERARD
Original Assignee
BADENS GERARD
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 BADENS GERARD filed Critical BADENS GERARD
Priority to FR7733476A priority Critical patent/FR2407537A1/en
Publication of FR2407537A1 publication Critical patent/FR2407537A1/en
Withdrawn legal-status Critical Current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
    • G08B21/18—Status alarms
    • G08B21/24—Reminder alarms, e.g. anti-loss alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles
    • G08B13/1427—Mechanical actuation by lifting or attempted removal of hand-portable articles with transmitter-receiver for distance detection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Burglar Alarm Systems (AREA)
  • Emergency Alarm Devices (AREA)

Abstract

The system is designed to be used as an anti-theft or anti-loss warning system for precious objects. It uses a combination a transmitter fixed to the object to be guarded and a receiver fixed to the supervising element. The transmitter circuit includes a driving stage which is stabilised by a quartz element. The circuit has a high-frequency power stage and an aerial filter. It has also an aerial and a supply produced by a miniature battery. An acoustic signal is generated in accordance with the distance of the object from the supervising element and the receiver may be the superheterodyne type.
FR7733476A 1977-10-28 1977-10-28 Object distance measuring and signalling system - uses transmitter on monitored object and receiver at supervision station Withdrawn FR2407537A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7733476A FR2407537A1 (en) 1977-10-28 1977-10-28 Object distance measuring and signalling system - uses transmitter on monitored object and receiver at supervision station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7733476A FR2407537A1 (en) 1977-10-28 1977-10-28 Object distance measuring and signalling system - uses transmitter on monitored object and receiver at supervision station

Publications (1)

Publication Number Publication Date
FR2407537A1 true FR2407537A1 (en) 1979-05-25

Family

ID=9197355

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7733476A Withdrawn FR2407537A1 (en) 1977-10-28 1977-10-28 Object distance measuring and signalling system - uses transmitter on monitored object and receiver at supervision station

Country Status (1)

Country Link
FR (1) FR2407537A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498783A1 (en) * 1981-01-23 1982-07-30 Decis Mario AUTOMATIC PRESENCE CONTROL DEVICE
EP0073681A2 (en) * 1981-09-02 1983-03-09 Kunwar Chander Jeet Singh Improvements relating to position detection devices
FR2543715A1 (en) * 1983-03-30 1984-10-05 Mayer Claude Monitoring device triggering an alarm in the case of separation between the user and a person, an animal or a monitored object
FR2590680A1 (en) * 1985-11-28 1987-05-29 Royoux Guy DEVICE FOR MONITORING THE PRESENCE IN A NEAR ZONE OF A MOBILE OBJECT, AN ANIMAL OR A HUMAN BEING

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3551906A (en) * 1967-04-28 1970-12-29 Leslie A Cooper Remote control alarm system
FR2082792A5 (en) * 1970-03-17 1971-12-10 Domy Jacques
NL7103592A (en) * 1971-03-17 1972-09-19
FR2301054A1 (en) * 1975-02-12 1976-09-10 Attia Chaouki Electronic anti theft device for hand luggage - has alarm operated when fixed reference post transmitter loses contact with receiver placed in case
FR2351461A1 (en) * 1976-05-12 1977-12-09 Holzer Walter Theft deterrent system with radio transmitters - has each object fitted with transmitter providing alarm signal when carried out of range

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3551906A (en) * 1967-04-28 1970-12-29 Leslie A Cooper Remote control alarm system
FR2082792A5 (en) * 1970-03-17 1971-12-10 Domy Jacques
NL7103592A (en) * 1971-03-17 1972-09-19
FR2301054A1 (en) * 1975-02-12 1976-09-10 Attia Chaouki Electronic anti theft device for hand luggage - has alarm operated when fixed reference post transmitter loses contact with receiver placed in case
FR2351461A1 (en) * 1976-05-12 1977-12-09 Holzer Walter Theft deterrent system with radio transmitters - has each object fitted with transmitter providing alarm signal when carried out of range

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498783A1 (en) * 1981-01-23 1982-07-30 Decis Mario AUTOMATIC PRESENCE CONTROL DEVICE
EP0073681A2 (en) * 1981-09-02 1983-03-09 Kunwar Chander Jeet Singh Improvements relating to position detection devices
EP0073681A3 (en) * 1981-09-02 1983-10-12 Kunwar Chander Jeet Singh Improvements relating to position detection devices
FR2543715A1 (en) * 1983-03-30 1984-10-05 Mayer Claude Monitoring device triggering an alarm in the case of separation between the user and a person, an animal or a monitored object
FR2590680A1 (en) * 1985-11-28 1987-05-29 Royoux Guy DEVICE FOR MONITORING THE PRESENCE IN A NEAR ZONE OF A MOBILE OBJECT, AN ANIMAL OR A HUMAN BEING

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Legal Events

Date Code Title Description
ST Notification of lapse