FR2367325A1 - Dispositif d'autocontrole positif de tous ensembles de surveillance acoustique - Google Patents

Dispositif d'autocontrole positif de tous ensembles de surveillance acoustique

Info

Publication number
FR2367325A1
FR2367325A1 FR7630681A FR7630681A FR2367325A1 FR 2367325 A1 FR2367325 A1 FR 2367325A1 FR 7630681 A FR7630681 A FR 7630681A FR 7630681 A FR7630681 A FR 7630681A FR 2367325 A1 FR2367325 A1 FR 2367325A1
Authority
FR
France
Prior art keywords
surveillance
automatic
common line
control
control signals
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
FR7630681A
Other languages
English (en)
Other versions
FR2367325B3 (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.)
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 FR7630681A priority Critical patent/FR2367325A1/fr
Publication of FR2367325A1 publication Critical patent/FR2367325A1/fr
Application granted granted Critical
Publication of FR2367325B3 publication Critical patent/FR2367325B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • G08B29/04—Monitoring of the detection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

L'invention a pour but le contrôle cyclique ou aléatoire du bon fonctionnement des systèmes d'écoute pour la surveillance des locaux pouvant être l'objet de vols. Un local A est pourvu d'un module d'écoute a à microphone M d'un module a1 émetteur de sons HP. Le centre d'écoute B possède un module d'écoute b avec un module de commande b1 commandant al par les fils 1,1 d'une ligne L privée ou concédée. Toute commande de b1 entraîne l'émission de a1, temporisée, dont le fonctionnement est contrôlée par b. Toute panne entraîne le silence et donne l'alerte. L'appareil s'applique à tous les systèmes et en particulier à la surveillance acoustique des établissements bancaires.
FR7630681A 1976-10-06 1976-10-06 Dispositif d'autocontrole positif de tous ensembles de surveillance acoustique Granted FR2367325A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7630681A FR2367325A1 (fr) 1976-10-06 1976-10-06 Dispositif d'autocontrole positif de tous ensembles de surveillance acoustique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7630681A FR2367325A1 (fr) 1976-10-06 1976-10-06 Dispositif d'autocontrole positif de tous ensembles de surveillance acoustique

Publications (2)

Publication Number Publication Date
FR2367325A1 true FR2367325A1 (fr) 1978-05-05
FR2367325B3 FR2367325B3 (fr) 1979-06-22

Family

ID=9178671

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7630681A Granted FR2367325A1 (fr) 1976-10-06 1976-10-06 Dispositif d'autocontrole positif de tous ensembles de surveillance acoustique

Country Status (1)

Country Link
FR (1) FR2367325A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043747A1 (fr) * 1980-07-08 1982-01-13 Hbs Dispositif de contrôle acoustique à distance testable par variation de la tension d'alimentation
EP0768630A1 (fr) * 1995-10-10 1997-04-16 DORNIER GmbH Dispositif de protection d'objets et de surveillance pour terrain en plein air
US5629687A (en) * 1994-08-29 1997-05-13 Emergency Technologies, Inc. Universal interface for remotely-monitored security systems

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0043747A1 (fr) * 1980-07-08 1982-01-13 Hbs Dispositif de contrôle acoustique à distance testable par variation de la tension d'alimentation
US5629687A (en) * 1994-08-29 1997-05-13 Emergency Technologies, Inc. Universal interface for remotely-monitored security systems
EP0768630A1 (fr) * 1995-10-10 1997-04-16 DORNIER GmbH Dispositif de protection d'objets et de surveillance pour terrain en plein air
US5838231A (en) * 1995-10-10 1998-11-17 Senstar-Stellar Corporation Device for monitoring open terrain and for protecting objects

Also Published As

Publication number Publication date
FR2367325B3 (fr) 1979-06-22

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Legal Events

Date Code Title Description
ST Notification of lapse