FR2441892A1 - Detecteur et procede d'utilisation d'un detecteur - Google Patents
Detecteur et procede d'utilisation d'un detecteurInfo
- Publication number
- FR2441892A1 FR2441892A1 FR7928549A FR7928549A FR2441892A1 FR 2441892 A1 FR2441892 A1 FR 2441892A1 FR 7928549 A FR7928549 A FR 7928549A FR 7928549 A FR7928549 A FR 7928549A FR 2441892 A1 FR2441892 A1 FR 2441892A1
- Authority
- FR
- France
- Prior art keywords
- ionization current
- ionization
- detector
- fire detector
- operating amplifier
- 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
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)
- Spectrometry And Color Measurement (AREA)
- Glass Compositions (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Abstract
L'INVENTION PORTE SUR UN DETECTEUR D'INCENDIE DU TYPE A IONISATION A UNE SEULE CHAMBRE. LE COURANT D'IONISATION EST DIRECTEMENT AMPLIFIE POUR FOURNIR UN SIGNAL ANALOGIQUE UTILISABLE, DANS UN AMPLIFICATEUR OPERATIONNEL DONT L'EFFET SUR LE COURANT D'IONISATION EST MINIMAL. CET AMPLIFICATEUR OPERATIONNEL EST AUSSI UTILISE POUR MAINTENIR DANS LA CHAMBRE UNE DIFFERENCE DE POTENTIEL CONSTANTE DE MANIERE QUE LE COURANT D'IONISATION NE SOIT PAS AFFECTE PAR DES FLUCTUATIONS DE TENSION. LE SIGNAL AMPLIFIE COMMANDE UN DISPOSITIF ENREGISTREUR, L'ANALYSE DE LA REPRESENTATION GRAPHIQUE PRODUITE PAR L'ENREGISTREUR PERMETTANT DE DISTINGUER ENTRE LES CONDITIONS REELLES D'INCENDIE ET LES CONDITIONS DE FAUSSES ALERTES. APPLICATION : DETECTEUR D'INCENDIE.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA786519A ZA786519B (en) | 1978-11-20 | 1978-11-20 | Detector |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2441892A1 true FR2441892A1 (fr) | 1980-06-13 |
FR2441892B1 FR2441892B1 (fr) | 1983-02-11 |
Family
ID=25573664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7928549A Granted FR2441892A1 (fr) | 1978-11-20 | 1979-11-20 | Detecteur et procede d'utilisation d'un detecteur |
Country Status (20)
Country | Link |
---|---|
US (1) | US4423411A (fr) |
JP (1) | JPS5572294A (fr) |
AU (1) | AU534265B2 (fr) |
BE (1) | BE880166A (fr) |
BR (1) | BR7907533A (fr) |
CA (1) | CA1148278A (fr) |
CH (1) | CH647879A5 (fr) |
DE (1) | DE2946507C2 (fr) |
DK (1) | DK156785C (fr) |
FR (1) | FR2441892A1 (fr) |
GB (1) | GB2041534B (fr) |
IE (1) | IE48643B1 (fr) |
IT (1) | IT1124984B (fr) |
LU (1) | LU81912A1 (fr) |
NL (1) | NL182989C (fr) |
NO (1) | NO151062C (fr) |
PH (1) | PH21359A (fr) |
SE (1) | SE444240B (fr) |
ZA (1) | ZA786519B (fr) |
ZM (1) | ZM8979A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3904979A1 (de) * | 1989-02-18 | 1990-08-23 | Beyersdorf Hartwig | Verfahren zum betrieb eines ionisationsrauchmelders und ionisationsrauchmelder |
US5189399A (en) * | 1989-02-18 | 1993-02-23 | Hartwig Beyersdorf | Method of operating an ionization smoke alarm and ionization smoke alarm |
US4904988A (en) * | 1989-03-06 | 1990-02-27 | Nesbit Charles E | Toy with a smoke detector |
US5563578A (en) * | 1993-07-26 | 1996-10-08 | Isenstein; Robert J. | Detection of hazardous gas leakage |
US8773137B2 (en) * | 2008-03-07 | 2014-07-08 | Bertelli & Partners, S.R.L. | Method and device to detect the flame in a burner operating on a solid, liquid or gaseous combustible |
DE102014019172B4 (de) | 2014-12-17 | 2023-12-07 | Elmos Semiconductor Se | Vorrichtung und Verfahren zur Unterscheidung von festen Objekten, Kochdunst und Rauch mit einem kompensierenden optischen Messsystem |
DE102014019773B4 (de) | 2014-12-17 | 2023-12-07 | Elmos Semiconductor Se | Vorrichtung und Verfahren zur Unterscheidung von festen Objekten, Kochdunst und Rauch mittels des Displays eines Mobiltelefons |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3714641A (en) * | 1969-03-27 | 1973-01-30 | Cerberus Ag | Ionization fire alarm |
US3964036A (en) * | 1972-11-15 | 1976-06-15 | Hochiki Corporation | Ionization smoke detector co-used to issue fire alarm and detect ambient atmosphere |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2954474A (en) * | 1955-04-01 | 1960-09-27 | Nat Res Corp | Measuring |
JPS529998B1 (fr) * | 1969-04-25 | 1977-03-19 | ||
NO129270B (fr) * | 1970-05-16 | 1974-03-18 | Preussag Ag Feuerschutz | |
JPS5299099A (en) * | 1976-02-16 | 1977-08-19 | Nohmi Bosai Kogyo Co Ltd | Fire detector |
DE2711457C2 (de) * | 1977-03-16 | 1985-06-27 | Siemens AG, 1000 Berlin und 8000 München | Ionisationsbrandmelder |
-
1978
- 1978-11-20 ZA ZA786519A patent/ZA786519B/xx unknown
-
1979
- 1979-11-14 IE IE2181/79A patent/IE48643B1/en not_active IP Right Cessation
- 1979-11-15 ZM ZM89/79A patent/ZM8979A1/xx unknown
- 1979-11-15 NO NO79793696A patent/NO151062C/no unknown
- 1979-11-16 IT IT27341/79A patent/IT1124984B/it active
- 1979-11-17 DE DE2946507A patent/DE2946507C2/de not_active Expired
- 1979-11-19 LU LU81912A patent/LU81912A1/fr unknown
- 1979-11-19 CA CA000340127A patent/CA1148278A/fr not_active Expired
- 1979-11-19 NL NLAANVRAGE7908429,A patent/NL182989C/xx not_active IP Right Cessation
- 1979-11-19 CH CH10287/79A patent/CH647879A5/de not_active IP Right Cessation
- 1979-11-19 SE SE7909517A patent/SE444240B/sv not_active IP Right Cessation
- 1979-11-19 JP JP14990779A patent/JPS5572294A/ja active Pending
- 1979-11-19 AU AU52947/79A patent/AU534265B2/en not_active Ceased
- 1979-11-19 DK DK490879A patent/DK156785C/da active
- 1979-11-19 GB GB7939915A patent/GB2041534B/en not_active Expired
- 1979-11-20 BE BE0/198211A patent/BE880166A/fr not_active IP Right Cessation
- 1979-11-20 PH PH23306A patent/PH21359A/en unknown
- 1979-11-20 BR BR7907533A patent/BR7907533A/pt not_active IP Right Cessation
- 1979-11-20 FR FR7928549A patent/FR2441892A1/fr active Granted
-
1981
- 1981-09-02 US US06/298,804 patent/US4423411A/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3714641A (en) * | 1969-03-27 | 1973-01-30 | Cerberus Ag | Ionization fire alarm |
US3964036A (en) * | 1972-11-15 | 1976-06-15 | Hochiki Corporation | Ionization smoke detector co-used to issue fire alarm and detect ambient atmosphere |
Also Published As
Publication number | Publication date |
---|---|
NL182989C (nl) | 1988-06-16 |
NL7908429A (nl) | 1980-05-22 |
DE2946507A1 (de) | 1980-05-29 |
LU81912A1 (fr) | 1980-04-22 |
NO151062C (no) | 1985-01-30 |
AU5294779A (en) | 1980-06-12 |
JPS5572294A (en) | 1980-05-30 |
AU534265B2 (en) | 1984-01-12 |
GB2041534A (en) | 1980-09-10 |
IE792181L (en) | 1980-05-20 |
CA1148278A (fr) | 1983-06-14 |
US4423411A (en) | 1983-12-27 |
BE880166A (fr) | 1980-03-17 |
NO151062B (no) | 1984-10-22 |
NL182989B (nl) | 1988-01-18 |
SE7909517L (sv) | 1980-05-21 |
IE48643B1 (en) | 1985-04-03 |
FR2441892B1 (fr) | 1983-02-11 |
SE444240B (sv) | 1986-03-24 |
DK156785B (da) | 1989-10-02 |
IT7927341A0 (it) | 1979-11-16 |
CH647879A5 (de) | 1985-02-15 |
DK490879A (da) | 1980-05-21 |
ZA786519B (en) | 1980-02-27 |
DK156785C (da) | 1990-03-05 |
NO793696L (no) | 1980-05-21 |
ZM8979A1 (en) | 1981-08-21 |
PH21359A (en) | 1987-10-15 |
IT1124984B (it) | 1986-05-14 |
GB2041534B (en) | 1983-06-15 |
DE2946507C2 (de) | 1986-04-10 |
BR7907533A (pt) | 1980-08-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |