FR2476878B3 - - Google Patents

Info

Publication number
FR2476878B3
FR2476878B3 FR8004109A FR8004109A FR2476878B3 FR 2476878 B3 FR2476878 B3 FR 2476878B3 FR 8004109 A FR8004109 A FR 8004109A FR 8004109 A FR8004109 A FR 8004109A FR 2476878 B3 FR2476878 B3 FR 2476878B3
Authority
FR
France
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
Application number
FR8004109A
Other languages
French (fr)
Other versions
FR2476878A1 (en
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 FR8004109A priority Critical patent/FR2476878A1/en
Publication of FR2476878A1 publication Critical patent/FR2476878A1/en
Application granted granted Critical
Publication of FR2476878B3 publication Critical patent/FR2476878B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/56—Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
    • G08B29/08—Signalling of tampering with the line circuit
FR8004109A 1980-02-25 1980-02-25 Doppler effect movement detector - has multivibrator controlling operation only during existence of short pulses to minimise power and enable battery operation in power cut Granted FR2476878A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8004109A FR2476878A1 (en) 1980-02-25 1980-02-25 Doppler effect movement detector - has multivibrator controlling operation only during existence of short pulses to minimise power and enable battery operation in power cut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8004109A FR2476878A1 (en) 1980-02-25 1980-02-25 Doppler effect movement detector - has multivibrator controlling operation only during existence of short pulses to minimise power and enable battery operation in power cut

Publications (2)

Publication Number Publication Date
FR2476878A1 FR2476878A1 (en) 1981-08-28
FR2476878B3 true FR2476878B3 (en) 1982-12-17

Family

ID=9238930

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8004109A Granted FR2476878A1 (en) 1980-02-25 1980-02-25 Doppler effect movement detector - has multivibrator controlling operation only during existence of short pulses to minimise power and enable battery operation in power cut

Country Status (1)

Country Link
FR (1) FR2476878A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519449A1 (en) * 1981-12-31 1983-07-08 Agence Centrale De Services Intrusion alarm triggering circuit for Doppler effect detector - uses timing circuits in triggering and reset circuits for shift register to ensure detected movement is valid
DE3209093A1 (en) * 1982-03-12 1983-09-22 Hörmann GmbH, 8011 Kirchseeon DEVICE FOR MONITORING SPACE BY DOPPLER RADAR
DE3209094A1 (en) * 1982-03-12 1983-09-22 Hörmann GmbH, 8011 Kirchseeon DEVICE FOR MONITORING SPACE BY DOPPLER RADAR
FR2538188B1 (en) * 1982-12-16 1988-07-15 Dreuilhe Jacqueline OSCILLATOR FOR A DOPPLER RADAR HEAD FOR THE DETECTION OF MOVING OBJECTS
FR2575554B1 (en) * 1984-12-28 1987-01-23 Radiotechnique Compelec MICROWAVE MODULE FOR DOPPLER RADAR IN BAND K
EP0213558A1 (en) * 1985-08-23 1987-03-11 C & K Systems, Inc. A method and an apparatus for detecting an intruder
FR2614429B1 (en) * 1987-04-21 1989-09-01 Esteban Michel HOMODYNE-TYPE WAVELENGTH RADIO DOPPLER RADAR FOR USE IN DETECTION OF INTRUSIONS INSIDE PREMISES

Also Published As

Publication number Publication date
FR2476878A1 (en) 1981-08-28

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Legal Events

Date Code Title Description
CL Concession to grant licenses
ST Notification of lapse