FI56908C - Brandalarmanlaeggning - Google Patents
Brandalarmanlaeggning Download PDFInfo
- Publication number
- FI56908C FI56908C FI1942/73A FI194273A FI56908C FI 56908 C FI56908 C FI 56908C FI 1942/73 A FI1942/73 A FI 1942/73A FI 194273 A FI194273 A FI 194273A FI 56908 C FI56908 C FI 56908C
- Authority
- FI
- Finland
- Prior art keywords
- current
- voltage
- fire
- alarm
- signal
- Prior art date
Links
- 239000004020 conductor Substances 0.000 claims description 27
- 230000011664 signaling Effects 0.000 claims description 16
- 230000005669 field effect Effects 0.000 claims description 8
- 239000000779 smoke Substances 0.000 claims description 4
- 239000000443 aerosol Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 claims 3
- 238000005065 mining Methods 0.000 claims 1
- 230000009022 nonlinear effect Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 230000000284 resting effect Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 241000202252 Cerberus Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009467 reduction 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)
- Alarm Systems (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1065472 | 1972-07-17 | ||
| CH1065472 | 1972-07-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FI56908B FI56908B (fi) | 1979-12-31 |
| FI56908C true FI56908C (fi) | 1980-04-10 |
Family
ID=4365437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FI1942/73A FI56908C (fi) | 1972-07-17 | 1973-06-15 | Brandalarmanlaeggning |
Country Status (13)
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2707409C2 (de) * | 1977-02-21 | 1985-02-21 | Hartwig Dipl.-Ing. 2409 Scharbeutz Beyersdorf | Ionisationsbrandmelder |
| US4191946A (en) * | 1977-10-20 | 1980-03-04 | Gonzalez Raymond J | Warning apparatus with a line integrity supervisory circuit |
| JPS5831038B2 (ja) * | 1977-12-26 | 1983-07-02 | 能美防災工業株式会社 | 火災感知器 |
| DE2811891A1 (de) * | 1978-03-18 | 1979-09-27 | Merk Gmbh Telefonbau Fried | Schaltungsanordnung zur ruhestromueberwachung von meldeleitungen |
| US4207558A (en) * | 1978-04-03 | 1980-06-10 | Pittway Corporation | Interconnection circuit for a plurality of alarm units |
| USRE30620E (en) * | 1978-07-03 | 1981-05-19 | P. R. Mallory & Co. Inc. | High output smoke and heat detector alarm system utilizing a piezoelectric transducer and a voltage doubling means |
| FR2434438A1 (fr) * | 1978-08-26 | 1980-03-21 | Hochiki Co | Dispositif de detection d'incendie a protection contre les facteurs de bruit electrique |
| US4414539A (en) * | 1978-12-22 | 1983-11-08 | The Boeing Company | Built-in passive fault detection circuitry for an aircraft's electrical/electronic systems |
| US4287515A (en) * | 1979-04-27 | 1981-09-01 | Baker Industries, Inc. | Fire detection system with multiple output signals |
| US4573040A (en) * | 1979-11-30 | 1986-02-25 | Drexelbrook Engineering Company | Fail-safe instrument system |
| JPS56162122A (en) | 1980-05-16 | 1981-12-12 | Canon Inc | Electronic apparatus equipped with printing device |
| US5015958A (en) | 1983-06-30 | 1991-05-14 | Raychem Corporation | Elongate sensors comprising conductive polymers, and methods and apparatus using such sensors |
| US5382909A (en) | 1983-06-30 | 1995-01-17 | Raychem Corporation | Method for detecting and obtaining information about changes in variables |
| NZ208683A (en) * | 1983-06-30 | 1988-04-29 | Raychem Corp | Resistive sensor system for locating events |
| JPS6174187U (enrdf_load_html_response) * | 1984-10-16 | 1986-05-20 | ||
| DE3687819T2 (de) | 1985-06-12 | 1993-06-09 | Raychem Corp | Kohlenwasserstoffsensor. |
| US5898369A (en) * | 1996-01-18 | 1999-04-27 | Godwin; Paul K. | Communicating hazardous condition detector |
| AT501215B1 (de) * | 2004-12-20 | 2008-05-15 | Friedl Helmut Dipl Ing | Überwachungseinrichtung |
| DE102005038602B4 (de) * | 2005-08-16 | 2019-05-09 | Robert Bosch Gmbh | Sicherheitseinrichtung |
| JP6175235B2 (ja) * | 2012-12-25 | 2017-08-02 | 能美防災株式会社 | 火災報知設備及びそれに利用する火災感知器及び終端装置 |
| RU2717355C1 (ru) * | 2019-07-24 | 2020-03-23 | Общество С Ограниченной Ответственностью "Форносовское Научно-Производственное Предприятие "Гефест" | Устройство коммутации исполнительных элементов пожарной автоматики |
| CN116087726B (zh) * | 2023-04-11 | 2023-06-27 | 国网四川省电力公司电力科学研究院 | 一种火焰通道的临界击穿距离测量装置及测量方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3550120A (en) * | 1968-12-09 | 1970-12-22 | Honeywell Inc | Control apparatus |
-
1972
- 1972-07-17 CH CH1065472A patent/CH547531A/xx not_active IP Right Cessation
-
1973
- 1973-06-06 DE DE2328881A patent/DE2328881C3/de not_active Expired
- 1973-06-15 FI FI1942/73A patent/FI56908C/fi active
- 1973-06-27 FR FR7323460A patent/FR2193225B1/fr not_active Expired
- 1973-06-28 US US00374795A patent/US3821734A/en not_active Expired - Lifetime
- 1973-07-11 AU AU58325/73A patent/AU474604B2/en not_active Expired
- 1973-07-12 CA CA176,282A patent/CA988224A/en not_active Expired
- 1973-07-16 NO NO2886/73A patent/NO137619C/no unknown
- 1973-07-16 SE SE7309919A patent/SE390076B/xx unknown
- 1973-07-17 JP JP8001373A patent/JPS5617704B2/ja not_active Expired
- 1973-07-17 GB GB3409473A patent/GB1401146A/en not_active Expired
- 1973-07-17 ZA ZA734855A patent/ZA734855B/xx unknown
-
1980
- 1980-10-02 HK HK558/80A patent/HK55880A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2328881C3 (de) | 1982-03-18 |
| HK55880A (en) | 1980-10-10 |
| GB1401146A (en) | 1975-07-16 |
| DE2328881B2 (enrdf_load_html_response) | 1981-02-05 |
| US3821734A (en) | 1974-06-28 |
| JPS5617704B2 (enrdf_load_html_response) | 1981-04-23 |
| AU474604B2 (en) | 1976-07-29 |
| DE2328881A1 (de) | 1974-01-31 |
| SE390076B (sv) | 1976-11-29 |
| FI56908B (fi) | 1979-12-31 |
| NO137619C (no) | 1978-03-29 |
| AU5798773A (en) | 1975-01-16 |
| FR2193225B1 (enrdf_load_html_response) | 1979-01-26 |
| NO137619B (no) | 1977-12-12 |
| ZA734855B (en) | 1974-07-31 |
| FR2193225A1 (enrdf_load_html_response) | 1974-02-15 |
| CH547531A (de) | 1974-03-29 |
| CA988224A (en) | 1976-04-27 |
| JPS4970596A (enrdf_load_html_response) | 1974-07-08 |
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