FR2417222A1 - Dispositif de surveillance a elements photosensibles - Google Patents

Dispositif de surveillance a elements photosensibles

Info

Publication number
FR2417222A1
FR2417222A1 FR7803816A FR7803816A FR2417222A1 FR 2417222 A1 FR2417222 A1 FR 2417222A1 FR 7803816 A FR7803816 A FR 7803816A FR 7803816 A FR7803816 A FR 7803816A FR 2417222 A1 FR2417222 A1 FR 2417222A1
Authority
FR
France
Prior art keywords
zone
surveillance
rages
monitor
detect movement
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
FR7803816A
Other languages
English (en)
Other versions
FR2417222B1 (fr
Inventor
Jean Cottin
Michel Resibois
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7803816A priority Critical patent/FR2417222A1/fr
Publication of FR2417222A1 publication Critical patent/FR2417222A1/fr
Application granted granted Critical
Publication of FR2417222B1 publication Critical patent/FR2417222B1/fr
Granted 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
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

Dispositif de surveillance d'une zone vis-à-vis des mobiles tentant d'y pénétrer ou y évoluant, comportant une matrice d'éléments photosensibles du type à transfert de charge. L'image de la zone formée sur la matrice est comparée dans un comparateur à une image précédente, et le résultat de la comparaison délivre un signal vidéo proportionnel à la différence des éclairements des images comparées, différence produite par un objet mobile. Le signal vidéo ainsi formé déclenche une alarme si son niveau est supérieur à un seuil de valeur préétablie. Application à la surveillance de zones protégées.
FR7803816A 1978-02-10 1978-02-10 Dispositif de surveillance a elements photosensibles Granted FR2417222A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7803816A FR2417222A1 (fr) 1978-02-10 1978-02-10 Dispositif de surveillance a elements photosensibles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7803816A FR2417222A1 (fr) 1978-02-10 1978-02-10 Dispositif de surveillance a elements photosensibles

Publications (2)

Publication Number Publication Date
FR2417222A1 true FR2417222A1 (fr) 1979-09-07
FR2417222B1 FR2417222B1 (fr) 1982-12-03

Family

ID=9204457

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7803816A Granted FR2417222A1 (fr) 1978-02-10 1978-02-10 Dispositif de surveillance a elements photosensibles

Country Status (1)

Country Link
FR (1) FR2417222A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072511A1 (fr) * 1981-08-14 1983-02-23 Ficht GmbH Dispositif de détermination de la position dans un plan de mesure du point d'intersection entre ce plan et la trajectoire d'un objet
US4589079A (en) * 1983-04-14 1986-05-13 Ficht Gmbh Evaluation circuit for the signals from an array of N photoconductors which are successively scanned in a fast rhythm
FR2616251A1 (fr) * 1987-06-05 1988-12-09 Bertin & Cie Procede et dispositif de determination du nombre de personnes presentes dans un espace determine
FR2633134A1 (fr) * 1988-06-15 1989-12-22 Boucher Bernard Installation de surveillance video
EP0502791A1 (fr) * 1991-03-07 1992-09-09 Bertin & Cie Procédé et dispositif de surveillance d'un espace déterminé, tel qu'une partie d'un local, une zone de terrain ou une installation industrielle par exemple

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3825676A (en) * 1972-07-07 1974-07-23 Sanders Associates Inc Surveillance system
US3851096A (en) * 1972-11-03 1974-11-26 Texas Instruments Inc Surveillance system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3825676A (en) * 1972-07-07 1974-07-23 Sanders Associates Inc Surveillance system
US3851096A (en) * 1972-11-03 1974-11-26 Texas Instruments Inc Surveillance system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NV202/73 *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072511A1 (fr) * 1981-08-14 1983-02-23 Ficht GmbH Dispositif de détermination de la position dans un plan de mesure du point d'intersection entre ce plan et la trajectoire d'un objet
DE3132168A1 (de) * 1981-08-14 1983-03-03 Ficht GmbH, 8011 Kirchseeon Auswerteschaltung fuer die signale einer reihe von n in schnellem rhythmus nacheinander abgetasteten f fotodetektoren
WO1987000929A1 (fr) * 1981-08-14 1987-02-12 Peter Klaus Juergen CIRCUIT D'EVALUATION DES SIGNAUX PROVENANT D'UNE SERIE DE n PHOTODETECTEURS BALAYES SUCCESSIVEMENT A UN RYTHME RAPIDE
US4589079A (en) * 1983-04-14 1986-05-13 Ficht Gmbh Evaluation circuit for the signals from an array of N photoconductors which are successively scanned in a fast rhythm
FR2616251A1 (fr) * 1987-06-05 1988-12-09 Bertin & Cie Procede et dispositif de determination du nombre de personnes presentes dans un espace determine
WO1988009978A1 (fr) * 1987-06-05 1988-12-15 Bertin & Cie Procede et dispositif de determination du nombre de personnes presentes dans un espace determine
EP0296011A1 (fr) * 1987-06-05 1988-12-21 Bertin & Cie Procédé et dispositif de détermination du nombre de personnes présentes dans un espace déterminé
FR2633134A1 (fr) * 1988-06-15 1989-12-22 Boucher Bernard Installation de surveillance video
EP0502791A1 (fr) * 1991-03-07 1992-09-09 Bertin & Cie Procédé et dispositif de surveillance d'un espace déterminé, tel qu'une partie d'un local, une zone de terrain ou une installation industrielle par exemple
FR2673745A1 (fr) * 1991-03-07 1992-09-11 Bertin & Cie Procede et dispositif de surveillance d'un espace determine, tel qu'une partie d'un local, une zone de terrain ou une installation industrielle par exemple.
US5229601A (en) * 1991-03-07 1993-07-20 Bertin & Cie Method and apparatus for surveillance of a determined space such as a portion of premises, an area of ground, or an industrial installation, for example

Also Published As

Publication number Publication date
FR2417222B1 (fr) 1982-12-03

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Legal Events

Date Code Title Description
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