FR2289017A1 - Centralised surveillance system - connects noise detectors to central receivers above set noise level or on break in - Google Patents

Centralised surveillance system - connects noise detectors to central receivers above set noise level or on break in

Info

Publication number
FR2289017A1
FR2289017A1 FR7435560A FR7435560A FR2289017A1 FR 2289017 A1 FR2289017 A1 FR 2289017A1 FR 7435560 A FR7435560 A FR 7435560A FR 7435560 A FR7435560 A FR 7435560A FR 2289017 A1 FR2289017 A1 FR 2289017A1
Authority
FR
France
Prior art keywords
break
noise
surveillance system
centralised
above set
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
FR7435560A
Other languages
French (fr)
Other versions
FR2289017B1 (en
Inventor
Claude Wach
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.)
CRIT TELEPHONIE
Original Assignee
CRIT TELEPHONIE
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 CRIT TELEPHONIE filed Critical CRIT TELEPHONIE
Priority to FR7435560A priority Critical patent/FR2289017A1/en
Publication of FR2289017A1 publication Critical patent/FR2289017A1/en
Application granted granted Critical
Publication of FR2289017B1 publication Critical patent/FR2289017B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
    • 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
    • G08B25/08—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 communication transmission lines

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)

Abstract

The surveillance system has, at each location, and installation which is coupled to a complementary installation at a central surveillance post, connections being by two wire telephone lines and transformers. Each subscriber installation has at least one noise detector and the monitoring installation has a noise receiver. Means are provided for connecting the receiver to the noise detector as soon as contacts are actuated by a break-in attempt or the noise level in the location exceeds a predetermined level.
FR7435560A 1974-10-23 1974-10-23 Centralised surveillance system - connects noise detectors to central receivers above set noise level or on break in Granted FR2289017A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7435560A FR2289017A1 (en) 1974-10-23 1974-10-23 Centralised surveillance system - connects noise detectors to central receivers above set noise level or on break in

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7435560A FR2289017A1 (en) 1974-10-23 1974-10-23 Centralised surveillance system - connects noise detectors to central receivers above set noise level or on break in

Publications (2)

Publication Number Publication Date
FR2289017A1 true FR2289017A1 (en) 1976-05-21
FR2289017B1 FR2289017B1 (en) 1977-07-08

Family

ID=9144383

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7435560A Granted FR2289017A1 (en) 1974-10-23 1974-10-23 Centralised surveillance system - connects noise detectors to central receivers above set noise level or on break in

Country Status (1)

Country Link
FR (1) FR2289017A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999028883A1 (en) * 1997-11-27 1999-06-10 Joy Ann Watson Monitoring system
GB2336014A (en) * 1997-11-27 1999-10-06 Joy Ann Watson Monitoring system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1251649A (en) * 1960-03-17 1961-01-20 Telautograph Corp Warning system
FR1303629A (en) * 1961-08-03 1962-09-14 Theft protection device
US3304547A (en) * 1964-12-30 1967-02-14 Iii Benedict Bristol Alarm system
US3475751A (en) * 1966-07-07 1969-10-28 Executone Inf Sys Inc Remote sound monitoring and control system
US3647974A (en) * 1969-10-21 1972-03-07 Raymond E Geisler Sound-type detection system
US3678509A (en) * 1970-07-30 1972-07-18 Multra Guard Inc Security alarm system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1251649A (en) * 1960-03-17 1961-01-20 Telautograph Corp Warning system
FR1303629A (en) * 1961-08-03 1962-09-14 Theft protection device
US3304547A (en) * 1964-12-30 1967-02-14 Iii Benedict Bristol Alarm system
US3475751A (en) * 1966-07-07 1969-10-28 Executone Inf Sys Inc Remote sound monitoring and control system
US3647974A (en) * 1969-10-21 1972-03-07 Raymond E Geisler Sound-type detection system
US3678509A (en) * 1970-07-30 1972-07-18 Multra Guard Inc Security alarm system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999028883A1 (en) * 1997-11-27 1999-06-10 Joy Ann Watson Monitoring system
GB2336014A (en) * 1997-11-27 1999-10-06 Joy Ann Watson Monitoring system

Also Published As

Publication number Publication date
FR2289017B1 (en) 1977-07-08

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Legal Events

Date Code Title Description
ST Notification of lapse