ATE87385T1 - SECURITY SYSTEM WITH RADIO ELECTRICAL TRANSMISSION. - Google Patents

SECURITY SYSTEM WITH RADIO ELECTRICAL TRANSMISSION.

Info

Publication number
ATE87385T1
ATE87385T1 AT89402891T AT89402891T ATE87385T1 AT E87385 T1 ATE87385 T1 AT E87385T1 AT 89402891 T AT89402891 T AT 89402891T AT 89402891 T AT89402891 T AT 89402891T AT E87385 T1 ATE87385 T1 AT E87385T1
Authority
AT
Austria
Prior art keywords
alarm
security system
electrical transmission
signals
radio electrical
Prior art date
Application number
AT89402891T
Other languages
German (de)
Inventor
Jacques Duboys
Gerard Akenine
Original Assignee
Cerberus Guinard
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 Cerberus Guinard filed Critical Cerberus Guinard
Application granted granted Critical
Publication of ATE87385T1 publication Critical patent/ATE87385T1/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08B29/16—Security signalling or alarm systems, e.g. redundant systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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 Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Alarm Systems (AREA)
  • Transceivers (AREA)
  • Fire Alarms (AREA)
  • Helmets And Other Head Coverings (AREA)

Abstract

The proposed device consists in that, each transmitter (1) associated with an alarm detection device (2) comprises two devices (3) and (4) for transmitting the alarm signal in such a way as to transmit two alarm signals which are identical but separated in time by a certain period. On reception, an alarm is recognised not only when both signals are received, but also when a single signal is received. The coding of the two transmission devices into the alarm signals permits determination of the transmission device (3) or (4) which is defective. The proposed device is applicable to security systems. <IMAGE>
AT89402891T 1988-10-25 1989-10-19 SECURITY SYSTEM WITH RADIO ELECTRICAL TRANSMISSION. ATE87385T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8813920A FR2638267B1 (en) 1988-10-25 1988-10-25 SAFETY SYSTEM WITH RADIOELECTRIC TRANSMISSION
EP89402891A EP0366527B1 (en) 1988-10-25 1989-10-19 Security system with radioelectric transmission

Publications (1)

Publication Number Publication Date
ATE87385T1 true ATE87385T1 (en) 1993-04-15

Family

ID=9371248

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89402891T ATE87385T1 (en) 1988-10-25 1989-10-19 SECURITY SYSTEM WITH RADIO ELECTRICAL TRANSMISSION.

Country Status (4)

Country Link
EP (1) EP0366527B1 (en)
AT (1) ATE87385T1 (en)
DE (1) DE68905567T2 (en)
FR (1) FR2638267B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848231A (en) * 1970-12-31 1974-11-12 Baldwin Electronics Inc Alarm system utilizing pulse position modulation and dual conductor sensor
US3909722A (en) * 1973-06-22 1975-09-30 Jbh Electronic Systems Inc Variable frequency communication system
US4575712A (en) * 1984-02-27 1986-03-11 Pittway Corporation Communication system
US4665385A (en) * 1985-02-05 1987-05-12 Henderson Claude L Hazardous condition monitoring system

Also Published As

Publication number Publication date
EP0366527A1 (en) 1990-05-02
DE68905567T2 (en) 1993-08-26
DE68905567D1 (en) 1993-04-29
FR2638267A1 (en) 1990-04-27
FR2638267B1 (en) 1990-12-21
EP0366527B1 (en) 1993-03-24

Similar Documents

Publication Publication Date Title
FR2460013B1 (en)
ES2020690A6 (en) Antenna structure for an electronic article surveillance system.
EP0834846A3 (en) Wireless hazard signalling system and method
CA2003939A1 (en) Active signalling transmitter control
WO1991009323A3 (en) Detection device
TW235392B (en)
FR2537367B1 (en) METHOD AND DEVICE FOR UNINTERRUPTED TRAFFIC MONITORING OF EQUIPMENT OF A DIGITAL TRANSMISSION LINK
EP0310932A3 (en) Light barrier with reflector
KR920704249A (en) Electronics to prevent collisions between vehicles
DE68905567D1 (en) SECURITY SYSTEM WITH RADIO ELECTRICAL TRANSMISSION.
WO1996033582A3 (en) Transmission system with improved tone detection
DE58905863D1 (en) Radio receiver.
CA2000582A1 (en) Optical transmission device
ATE193137T1 (en) RADIO ALARM SECURITY SYSTEM
EP0376574A3 (en) Franking system
EP0395097A3 (en) Remote control system for audio/video devices
SE9302900D0 (en) Detecting aircraft sensor
FI932431A0 (en) Foerfarande Foer indicering av halter av fraemmande aemnen och anordning Foer detta
JPS5488019A (en) Transmitting device of non-contact signal
JPS57161924A (en) Data gathering system
JPS57155861A (en) Line monitoring system
FR2753024B1 (en) DEVICE AND METHOD FOR RECEIVING AN AMRF SIGNAL CONSISTING OF CARRIER FREQUENCIES TRANSMITTED BY AT LEAST TWO TERMINALS, AND CORRESPONDING TRANSMISSION SYSTEM
JPS57132439A (en) Optical wireless communication system
JPS56159760A (en) Intercomputer coupler
JPS6444656A (en) Data communication system