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

Similar Documents

Publication Publication Date Title
US4189720A (en) Repeater for smoke and similar alarms
US4358756A (en) Alarm transmission system
US5159315A (en) Communication system with environmental condition detection capability
US3852740A (en) Alarm system with radio alarm link and equipment-activating power line link
EP0125143A3 (en) Movement monitor
GB1476261A (en) Information transmission system
GB1342552A (en) Intruder detection systems
US5790024A (en) Intrusion monitoring system
IE42885L (en) Alarm circuit for battery-operated device
GB1533823A (en) Remote signalling apparatus particularly suitable for anti-theft and anti-burglary protection
GB1308701A (en) Intrusion detection apparatus having protection against jamming
US3559194A (en) Fire alarm system
US3806921A (en) Detector device
FR2264334A1 (en) Burglar, fire etc. alarm system - uses detectors to send radio code signals to alarm
EP0229198A1 (en) Neighbourhood alarm
FR2351461A1 (en) Theft deterrent system with radio transmitters - has each object fitted with transmitter providing alarm signal when carried out of range
GB1520196A (en) Alarm and theft prevention apparatus
GB1308702A (en) Intrusion detection apparatus having supervisory control means
ATE193137T1 (en) RADIO ALARM SECURITY SYSTEM
JPH0652297B2 (en) Alarm device
FR2234622A1 (en) Centralised radio alarm system - control in vehicle directs latter to peripherals signalling alarm
GB1489385A (en) Alarm signal communication systems
GB1428652A (en) Alarm systems
EP0032135A3 (en) Monitoring apparatus
SU1730648A1 (en) Burglar alarm device with remote radio communication

Legal Events

Date Code Title Description
ST Notification of lapse