FR2264334A1 - Burglar, fire etc. alarm system - uses detectors to send radio code signals to alarm - Google Patents

Burglar, fire etc. alarm system - uses detectors to send radio code signals to alarm

Info

Publication number
FR2264334A1
FR2264334A1 FR7408606A FR7408606A FR2264334A1 FR 2264334 A1 FR2264334 A1 FR 2264334A1 FR 7408606 A FR7408606 A FR 7408606A FR 7408606 A FR7408606 A FR 7408606A FR 2264334 A1 FR2264334 A1 FR 2264334A1
Authority
FR
France
Prior art keywords
alarm
transmitter
burglar
detectors
code 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
FR7408606A
Other languages
French (fr)
Other versions
FR2264334B3 (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.)
LIOU TCHEN SAN RENE FR
Original Assignee
LIOU TCHEN SAN RENE FR
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 LIOU TCHEN SAN RENE FR filed Critical LIOU TCHEN SAN RENE FR
Priority to FR7408606A priority Critical patent/FR2264334A1/en
Publication of FR2264334A1 publication Critical patent/FR2264334A1/en
Application granted granted Critical
Publication of FR2264334B3 publication Critical patent/FR2264334B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)

Abstract

Transmitter detectors intermittently send a single coded signal, doubled by a modulated single, to a selective receiver which can record these transmissions. The transmitter detectors have means which trigger an alarm when a transmitter which is not part of the installation attempts to jam the transmissions. The selective receiver detects a non-functioning detector transmitter in an installation having several detector transmitters. The transmitters and receivers are powered by chargeable or non-chargeable batteries and may be used to control sirens, police alarms etc. The system may be used for gas or fire detection etc. and to controls sprinklers etc.
FR7408606A 1974-03-14 1974-03-14 Burglar, fire etc. alarm system - uses detectors to send radio code signals to alarm Granted FR2264334A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7408606A FR2264334A1 (en) 1974-03-14 1974-03-14 Burglar, fire etc. alarm system - uses detectors to send radio code signals to alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7408606A FR2264334A1 (en) 1974-03-14 1974-03-14 Burglar, fire etc. alarm system - uses detectors to send radio code signals to alarm

Publications (2)

Publication Number Publication Date
FR2264334A1 true FR2264334A1 (en) 1975-10-10
FR2264334B3 FR2264334B3 (en) 1976-12-24

Family

ID=9136288

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7408606A Granted FR2264334A1 (en) 1974-03-14 1974-03-14 Burglar, fire etc. alarm system - uses detectors to send radio code signals to alarm

Country Status (1)

Country Link
FR (1) FR2264334A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2596555A1 (en) * 1986-03-25 1987-10-02 Greg S Greganti C Sas DEVICE FOR TRANSMITTING MESSAGES FROM A PLURALITY OF SENSORS TO A CENTRAL UNIT, ESPECIALLY FOR THE DETECTION OF FIXED OR MOBILE DEVICE OPERATING FAULTS OF MACHINES OR VEHICLES
FR2658343A1 (en) * 1990-02-09 1991-08-16 Olivier Denis Device against theft of and breaking into containers
FR2685600A1 (en) * 1991-12-20 1993-06-25 Robart Yves System for surveillance of a plurality of electrical cabinets, and especially of telephony sub-distribution cabinets

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2596555A1 (en) * 1986-03-25 1987-10-02 Greg S Greganti C Sas DEVICE FOR TRANSMITTING MESSAGES FROM A PLURALITY OF SENSORS TO A CENTRAL UNIT, ESPECIALLY FOR THE DETECTION OF FIXED OR MOBILE DEVICE OPERATING FAULTS OF MACHINES OR VEHICLES
FR2658343A1 (en) * 1990-02-09 1991-08-16 Olivier Denis Device against theft of and breaking into containers
FR2685600A1 (en) * 1991-12-20 1993-06-25 Robart Yves System for surveillance of a plurality of electrical cabinets, and especially of telephony sub-distribution cabinets

Also Published As

Publication number Publication date
FR2264334B3 (en) 1976-12-24

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Legal Events

Date Code Title Description
ST Notification of lapse