FR2341903A1 - Systeme bifilaire comportant une section de reception de signaux et une section de detection avec un relais protege - Google Patents
Systeme bifilaire comportant une section de reception de signaux et une section de detection avec un relais protegeInfo
- Publication number
- FR2341903A1 FR2341903A1 FR7704790A FR7704790A FR2341903A1 FR 2341903 A1 FR2341903 A1 FR 2341903A1 FR 7704790 A FR7704790 A FR 7704790A FR 7704790 A FR7704790 A FR 7704790A FR 2341903 A1 FR2341903 A1 FR 2341903A1
- Authority
- FR
- France
- Prior art keywords
- system including
- section
- signal reception
- wire system
- detection section
- 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.)
- Withdrawn
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
- G08B29/18—Prevention or correction of operating errors
- G08B29/185—Signal analysis techniques for reducing or preventing false alarms or for enhancing the reliability of the system
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
-
- 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
- G08B29/16—Security signalling or alarm systems, e.g. redundant systems
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1976018255U JPS52111590U (fr) | 1976-02-20 | 1976-02-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2341903A1 true FR2341903A1 (fr) | 1977-09-16 |
Family
ID=11966562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7704790A Withdrawn FR2341903A1 (fr) | 1976-02-20 | 1977-02-18 | Systeme bifilaire comportant une section de reception de signaux et une section de detection avec un relais protege |
Country Status (6)
Country | Link |
---|---|
US (1) | US4142219A (fr) |
JP (1) | JPS52111590U (fr) |
CH (1) | CH614797A5 (fr) |
DE (1) | DE2707061A1 (fr) |
FR (1) | FR2341903A1 (fr) |
GB (1) | GB1532173A (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2203581A (en) * | 1987-04-15 | 1988-10-19 | Jack Y C Chen | Fire and/or burglar alarm system |
US5302889A (en) * | 1992-06-19 | 1994-04-12 | Honeywell Inc. | Voltage regulator |
DE4412653C2 (de) * | 1994-04-13 | 1997-01-09 | Schmersal K A Gmbh & Co | Überwachungseinrichtung |
CN103280055A (zh) * | 2013-05-30 | 2013-09-04 | 成都荣耀科技有限公司 | 可增强报警功能的低压电力线路防盗系统 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS446089Y1 (fr) * | 1966-03-30 | 1969-03-05 | ||
DE2029485B2 (de) * | 1969-06-21 | 1971-11-25 | Nittan Co. Ltd., Tokio | Ionisations rauchfuehler |
US3717862A (en) * | 1969-10-16 | 1973-02-20 | Nittan Co Ltd | Fire detecting system and testing means therefor |
US3728706A (en) * | 1970-09-28 | 1973-04-17 | Gen Signal Corp | System for indicating aerosols in the atmosphere |
US3824434A (en) * | 1972-12-26 | 1974-07-16 | Square D Co | Relay with time delay coil |
US4021671A (en) * | 1975-07-07 | 1977-05-03 | Gulf & Western Manufacturing Company (Systems) | Ionization detector |
-
1976
- 1976-02-20 JP JP1976018255U patent/JPS52111590U/ja active Pending
-
1977
- 1977-02-16 US US05/769,197 patent/US4142219A/en not_active Expired - Lifetime
- 1977-02-17 GB GB6757/77A patent/GB1532173A/en not_active Expired
- 1977-02-18 DE DE19772707061 patent/DE2707061A1/de not_active Withdrawn
- 1977-02-18 FR FR7704790A patent/FR2341903A1/fr not_active Withdrawn
- 1977-02-18 CH CH209577A patent/CH614797A5/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB1532173A (en) | 1978-11-15 |
CH614797A5 (fr) | 1979-12-14 |
US4142219A (en) | 1979-02-27 |
DE2707061A1 (de) | 1977-09-01 |
JPS52111590U (fr) | 1977-08-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |