FR2386874A1 - Detecteur de fumees a ionisation associe a un circuit electronique de mesure velocimetrique - Google Patents
Detecteur de fumees a ionisation associe a un circuit electronique de mesure velocimetriqueInfo
- Publication number
- FR2386874A1 FR2386874A1 FR7710719A FR7710719A FR2386874A1 FR 2386874 A1 FR2386874 A1 FR 2386874A1 FR 7710719 A FR7710719 A FR 7710719A FR 7710719 A FR7710719 A FR 7710719A FR 2386874 A1 FR2386874 A1 FR 2386874A1
- Authority
- FR
- France
- Prior art keywords
- electronic
- measurement circuit
- velocimetric
- smoke detector
- detector associated
- 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
Links
Classifications
-
- 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
- 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
- G08B17/113—Constructional details
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire-Detection Mechanisms (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
Dispositif permettant la détection des fumées par la mesure vélocimétrique de la variation d'ionisation d'une chambre d'essai par rapport à une référence obtenue à l'aide d'un circuit électronique. Le dispositif comporte : - deux chambres ionisées par deux sources radioactives. Une des chambres contenant une atmosphère de référence et l'autre subissant l'atmosphère environnante; - un ensemble d'électrodes polarisées par un courant continu basse tension; - un circuit électronique de mesure vélocimétrique analysant et différenciant les variations du champ électrique. L'invention peut être utilisée pour détecter les incendies et tous les sinistres générant des composés ionisables.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7710719A FR2386874A1 (fr) | 1977-04-08 | 1977-04-08 | Detecteur de fumees a ionisation associe a un circuit electronique de mesure velocimetrique |
US05/892,390 US4238677A (en) | 1977-04-08 | 1978-03-31 | Smoke detector by ionization associated to a velocimetric measurement electronic circuit |
CH369078A CH625356A5 (fr) | 1977-04-08 | 1978-04-06 | |
ES468622A ES468622A1 (es) | 1977-04-08 | 1978-04-07 | Dispositivo de deteccion de humos de incendio |
GB13826/78A GB1598973A (en) | 1977-04-08 | 1978-04-07 | Device for detecting ionizable compounds |
JP4113478A JPS541092A (en) | 1977-04-08 | 1978-04-07 | Smoke detecting device |
BE0/201405A BE884312Q (fr) | 1977-04-08 | 1980-07-15 | Detecteur de fumees a ionisation associe a un circuit electronique de mesure velocimetrique |
FR8203898A FR2524179A2 (fr) | 1977-04-08 | 1982-03-09 | Detecteur de fumees velocimetrique a modules interchangeables |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7710719A FR2386874A1 (fr) | 1977-04-08 | 1977-04-08 | Detecteur de fumees a ionisation associe a un circuit electronique de mesure velocimetrique |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2386874A1 true FR2386874A1 (fr) | 1978-11-03 |
FR2386874B1 FR2386874B1 (fr) | 1980-01-18 |
Family
ID=9189231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7710719A Granted FR2386874A1 (fr) | 1977-04-08 | 1977-04-08 | Detecteur de fumees a ionisation associe a un circuit electronique de mesure velocimetrique |
Country Status (7)
Country | Link |
---|---|
US (1) | US4238677A (fr) |
JP (1) | JPS541092A (fr) |
BE (1) | BE884312Q (fr) |
CH (1) | CH625356A5 (fr) |
ES (1) | ES468622A1 (fr) |
FR (1) | FR2386874A1 (fr) |
GB (1) | GB1598973A (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4488044A (en) * | 1981-11-20 | 1984-12-11 | Pittway Corporation | Ionization chamber for smoke detector and the like |
FR2523309A1 (fr) * | 1982-03-09 | 1983-09-16 | Hugon Emile | Nouveau detecteur de fumees capacitif a modules interchangeables |
US4617560A (en) * | 1984-12-31 | 1986-10-14 | Gutmann Robin P E | Smoke or fire detector |
US5327119A (en) * | 1989-12-22 | 1994-07-05 | Hochiki Kabushiki Kaisha | Ionizing smoke sensor |
DE10326047A1 (de) * | 2003-06-10 | 2004-12-30 | Degussa Ag | Verfahren zur Herstellung alpha-substituierter Carbonsäuren aus der Reihe der alpha-Hydroxycarbonsäuren und N-substituierten-alpha-Aminocarbonsäuren |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2029485B2 (de) * | 1969-06-21 | 1971-11-25 | Nittan Co. Ltd., Tokio | Ionisations rauchfuehler |
US3665441A (en) * | 1970-09-14 | 1972-05-23 | Gen Signal Corp | Method and apparatus for detecting aerosols |
CH570016A5 (fr) * | 1973-03-30 | 1975-11-28 | Cerberus Ag | |
US3906474A (en) * | 1973-05-07 | 1975-09-16 | Fire Alert Company | Combustion products alarm |
US3909815A (en) * | 1973-06-01 | 1975-09-30 | Gamma Electronic | Detector for fumes and combustion gases |
US3812362A (en) * | 1973-07-02 | 1974-05-21 | Honeywell Inc | Smoke detector circuit |
US4020415A (en) * | 1974-12-30 | 1977-04-26 | Unitec, Inc. | Combustion product indicator |
JPS51100085U (fr) * | 1975-02-10 | 1976-08-11 | ||
US4097851A (en) * | 1976-07-19 | 1978-06-27 | Pittway Corporation | Sensitivity compensated fire detector |
-
1977
- 1977-04-08 FR FR7710719A patent/FR2386874A1/fr active Granted
-
1978
- 1978-03-31 US US05/892,390 patent/US4238677A/en not_active Expired - Lifetime
- 1978-04-06 CH CH369078A patent/CH625356A5/fr not_active IP Right Cessation
- 1978-04-07 ES ES468622A patent/ES468622A1/es not_active Expired
- 1978-04-07 GB GB13826/78A patent/GB1598973A/en not_active Expired
- 1978-04-07 JP JP4113478A patent/JPS541092A/ja active Pending
-
1980
- 1980-07-15 BE BE0/201405A patent/BE884312Q/fr not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FR2386874B1 (fr) | 1980-01-18 |
CH625356A5 (fr) | 1981-09-15 |
ES468622A1 (es) | 1979-04-01 |
US4238677A (en) | 1980-12-09 |
GB1598973A (en) | 1981-09-30 |
JPS541092A (en) | 1979-01-06 |
BE884312Q (fr) | 1980-11-03 |
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