NO125704B - - Google Patents
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- Publication number
- NO125704B NO125704B NO2432/70A NO243270A NO125704B NO 125704 B NO125704 B NO 125704B NO 2432/70 A NO2432/70 A NO 2432/70A NO 243270 A NO243270 A NO 243270A NO 125704 B NO125704 B NO 125704B
- Authority
- NO
- Norway
- Prior art keywords
- threshold value
- fire detector
- ionization
- transistor
- detector according
- Prior art date
Links
- 230000005669 field effect Effects 0.000 claims description 48
- 230000008878 coupling Effects 0.000 claims description 21
- 238000010168 coupling process Methods 0.000 claims description 21
- 238000005859 coupling reaction Methods 0.000 claims description 21
- 238000009413 insulation Methods 0.000 claims description 17
- 230000000295 complement effect Effects 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 15
- 230000001960 triggered effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims 2
- 230000008859 change Effects 0.000 description 5
- 239000010445 mica Substances 0.000 description 5
- 229910052618 mica group Inorganic materials 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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 Alarms (AREA)
- Fire-Detection Mechanisms (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH966269A CH497755A (de) | 1969-06-24 | 1969-06-24 | Ionisationsfeuermelder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO125704B true NO125704B (de) | 1972-10-16 |
Family
ID=4354339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO2432/70A NO125704B (de) | 1969-06-24 | 1970-06-23 |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US3676680A (de) |
| BE (1) | BE752058A (de) |
| CH (1) | CH497755A (de) |
| DE (1) | DE2029794C3 (de) |
| FR (1) | FR2060523A5 (de) |
| GB (1) | GB1291755A (de) |
| HK (1) | HK10478A (de) |
| NL (1) | NL168976C (de) |
| NO (1) | NO125704B (de) |
| SE (1) | SE354139B (de) |
| YU (1) | YU33338B (de) |
| ZA (1) | ZA704145B (de) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO129270B (de) * | 1970-05-16 | 1974-03-18 | Preussag Ag Feuerschutz | |
| CA933679A (en) * | 1970-08-10 | 1973-09-11 | Nittan Company | Fire alarming system |
| US3964036A (en) * | 1972-11-15 | 1976-06-15 | Hochiki Corporation | Ionization smoke detector co-used to issue fire alarm and detect ambient atmosphere |
| US3866195A (en) * | 1973-05-07 | 1975-02-11 | Fire Alert Company | Combustion product detector and method of calibrating |
| US3906474A (en) * | 1973-05-07 | 1975-09-16 | Fire Alert Company | Combustion products alarm |
| US4023152A (en) * | 1973-10-01 | 1977-05-10 | Matsushita Electric Works, Ltd. | Ionization type smoke sensing device |
| US3944859A (en) * | 1974-09-03 | 1976-03-16 | Rca Corporation | Bridge-balance detection circuit |
| USRE30117E (en) * | 1975-07-25 | 1979-10-16 | Cerberus Ag | Ionization-type fire or smoke sensing system |
| US4038649A (en) * | 1975-09-16 | 1977-07-26 | Emhart Industries, Inc. | Smoke detection alarm device |
| DE2713280C3 (de) * | 1977-03-25 | 1986-10-23 | Esser Sicherheitstechnik GmbH & Co KG, 4040 Neuss | Funktionsüberprüfbare Feuermelderanlage |
| JPS583195Y2 (ja) * | 1977-10-20 | 1983-01-20 | ツエルベルス・アクチェン・ゲゼルシャフト | イオン式火災感知器 |
| DE3004753C2 (de) * | 1980-02-08 | 1983-12-22 | Hartwig Dipl.-Ing. 2409 Scharbeutz Beyersdorf | Brandmeldeeinrichtung |
| NL180784C (nl) * | 1983-10-14 | 1987-04-16 | Nederlanden Staat | Gasgevoelige sensor. |
| 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 |
| DE4028167A1 (de) * | 1990-09-05 | 1992-03-12 | Esser Sicherheitstechnik | Ionisationsbrandmelder |
| US9437100B2 (en) * | 2013-11-02 | 2016-09-06 | Jeffrey D. Zwirn | Supervising alarm notification devices |
| CN112946458B (zh) * | 2021-02-22 | 2024-01-12 | 重庆四联测控技术有限公司 | 一种压力变送器的强制报警电流输出系统和方法 |
| CN114446002B (zh) * | 2022-01-17 | 2023-10-31 | 厦门理工学院 | 火灾在线监测方法、装置、介质及系统 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2646556A (en) * | 1950-06-17 | 1953-07-21 | C O Two Fire Equipment Co | Supervised alarm system |
| JPS446089Y1 (de) * | 1966-03-30 | 1969-03-05 | ||
| US3514603A (en) * | 1966-12-22 | 1970-05-26 | Johnson Service Co | Ionization chamber detection apparatus having a low voltage source means |
-
1969
- 1969-06-24 CH CH966269A patent/CH497755A/de not_active IP Right Cessation
-
1970
- 1970-06-08 US US44091A patent/US3676680A/en not_active Expired - Lifetime
- 1970-06-10 NL NLAANVRAGE7008421,A patent/NL168976C/xx active
- 1970-06-16 DE DE2029794A patent/DE2029794C3/de not_active Expired
- 1970-06-16 BE BE752058D patent/BE752058A/nl unknown
- 1970-06-17 ZA ZA704145A patent/ZA704145B/xx unknown
- 1970-06-17 FR FR7022334A patent/FR2060523A5/fr not_active Expired
- 1970-06-22 YU YU1575/70A patent/YU33338B/xx unknown
- 1970-06-23 SE SE08660/70A patent/SE354139B/xx unknown
- 1970-06-23 NO NO2432/70A patent/NO125704B/no unknown
- 1970-06-24 GB GB30653/70A patent/GB1291755A/en not_active Expired
-
1978
- 1978-02-23 HK HK104/78A patent/HK10478A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2029794C3 (de) | 1979-10-11 |
| BE752058A (nl) | 1970-12-01 |
| HK10478A (en) | 1978-03-03 |
| NL7008421A (de) | 1970-12-29 |
| FR2060523A5 (de) | 1971-06-18 |
| SE354139B (de) | 1973-02-26 |
| YU157570A (en) | 1976-04-30 |
| US3676680A (en) | 1972-07-11 |
| DE2029794A1 (de) | 1971-01-07 |
| CH497755A (de) | 1970-10-15 |
| GB1291755A (en) | 1972-10-04 |
| ZA704145B (en) | 1971-03-31 |
| NL168976C (nl) | 1982-05-17 |
| YU33338B (en) | 1976-10-31 |
| DE2029794B2 (de) | 1973-04-26 |
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