DE2346249C3 - Brandmelder - Google Patents
BrandmelderInfo
- Publication number
- DE2346249C3 DE2346249C3 DE2346249A DE2346249A DE2346249C3 DE 2346249 C3 DE2346249 C3 DE 2346249C3 DE 2346249 A DE2346249 A DE 2346249A DE 2346249 A DE2346249 A DE 2346249A DE 2346249 C3 DE2346249 C3 DE 2346249C3
- Authority
- DE
- Germany
- Prior art keywords
- light
- detector
- housing
- energy source
- wavelength
- 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.)
- Expired
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical group O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 14
- 238000002485 combustion reaction Methods 0.000 claims description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 7
- 239000001569 carbon dioxide Substances 0.000 claims description 7
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 claims description 3
- 230000005855 radiation Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- WPYVAWXEWQSOGY-UHFFFAOYSA-N indium antimonide Chemical compound [Sb]#[In] WPYVAWXEWQSOGY-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000004071 soot Substances 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
- G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
- G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
- G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity
-
- 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
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Emergency Management (AREA)
- Business, Economics & Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fire-Detection Mechanisms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA726258A ZA726258B (en) | 1972-09-13 | 1972-09-13 | Fire detector |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2346249A1 DE2346249A1 (de) | 1974-03-21 |
| DE2346249B2 DE2346249B2 (de) | 1977-09-15 |
| DE2346249C3 true DE2346249C3 (de) | 1978-05-03 |
Family
ID=25565379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2346249A Expired DE2346249C3 (de) | 1972-09-13 | 1973-09-13 | Brandmelder |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3921158A (OSRAM) |
| JP (1) | JPS4969099A (OSRAM) |
| CA (1) | CA1015042A (OSRAM) |
| DE (1) | DE2346249C3 (OSRAM) |
| DK (1) | DK137293B (OSRAM) |
| FR (1) | FR2199150B1 (OSRAM) |
| GB (1) | GB1436405A (OSRAM) |
| ZA (1) | ZA726258B (OSRAM) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5193499U (OSRAM) * | 1975-01-24 | 1976-07-27 | ||
| GB8309211D0 (en) * | 1983-04-05 | 1983-05-11 | Edinburgh Instr | Infra red absorption gas detectors |
| GB8515519D0 (en) * | 1985-06-19 | 1985-07-24 | Graviner Ltd | Gas detection |
| GB9616809D0 (en) * | 1996-08-10 | 1996-09-25 | Eev Ltd | Gas monitors |
| EP1087352A1 (de) * | 1999-09-22 | 2001-03-28 | Siemens Building Technologies AG | Optischer Rauchmelder |
| US6876305B2 (en) * | 1999-12-08 | 2005-04-05 | Gentex Corporation | Compact particle sensor |
| DE10031555B4 (de) * | 2000-06-28 | 2010-04-15 | Robert Bosch Gmbh | Optischer Sensor |
| DE60325254D1 (de) * | 2002-08-23 | 2009-01-22 | Gen Electric | Mmuner alarmsignalerzeugungs-rauchdetektor |
| US7564365B2 (en) * | 2002-08-23 | 2009-07-21 | Ge Security, Inc. | Smoke detector and method of detecting smoke |
| CN103150590A (zh) * | 2013-03-16 | 2013-06-12 | 赵明 | 矿井人员定位卡 |
| DE102013212512A1 (de) * | 2013-06-27 | 2015-01-15 | Robert Bosch Gmbh | Außenteil für ein Gerät und Gerät |
| CN103343701B (zh) * | 2013-07-23 | 2018-09-21 | 北京圣博亚科技有限公司 | 一种井下环境监测预警系统及其智能传感器 |
| 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 |
| 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 |
| CN105089700A (zh) * | 2015-08-10 | 2015-11-25 | 苏州欧可罗电子科技有限公司 | 一种矿井安全监测系统 |
| CN107829780B (zh) * | 2017-10-27 | 2019-11-05 | 精英数智科技股份有限公司 | 一种基于煤矿安全监控联网系统的瓦斯误报警识别方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1695031A (en) * | 1925-09-01 | 1928-12-11 | Siemens Ag | Determining gaseous carbonic acid |
| US2170435A (en) * | 1937-12-14 | 1939-08-22 | Standard Oil Dev Co | Gas analysis apparatus |
| US3102257A (en) * | 1958-07-21 | 1963-08-27 | John M Miller | Gas warning device |
| US3279308A (en) * | 1963-12-02 | 1966-10-18 | Dow Chemical Co | Dispersive analyzer having means for segregating different wavelengths of radiation from a single source |
| US3435209A (en) * | 1966-03-10 | 1969-03-25 | Beckman Instruments Inc | Two wavelength infrared analyzer having a pair of variable interference filters for determining the respective wavelengths |
| US3539770A (en) * | 1967-11-14 | 1970-11-10 | Barber Mfg Co | Electric infrared heater |
| US3621200A (en) * | 1968-10-31 | 1971-11-16 | American Packaging Corp | Heating element and packaging machine equipped therewith |
| US3677652A (en) * | 1971-06-15 | 1972-07-18 | Gte Sylvania Inc | Fluid analyzer apparatus |
-
1972
- 1972-09-13 ZA ZA726258A patent/ZA726258B/xx unknown
-
1973
- 1973-09-10 GB GB4237573A patent/GB1436405A/en not_active Expired
- 1973-09-10 US US395747A patent/US3921158A/en not_active Expired - Lifetime
- 1973-09-11 DK DK497973AA patent/DK137293B/da unknown
- 1973-09-12 CA CA181,009A patent/CA1015042A/en not_active Expired
- 1973-09-12 JP JP48102253A patent/JPS4969099A/ja active Pending
- 1973-09-13 FR FR7332948A patent/FR2199150B1/fr not_active Expired
- 1973-09-13 DE DE2346249A patent/DE2346249C3/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4969099A (OSRAM) | 1974-07-04 |
| DE2346249B2 (de) | 1977-09-15 |
| CA1015042A (en) | 1977-08-02 |
| ZA726258B (en) | 1973-11-28 |
| DK137293C (OSRAM) | 1978-07-10 |
| US3921158A (en) | 1975-11-18 |
| AU6025073A (en) | 1975-03-13 |
| GB1436405A (en) | 1976-05-19 |
| DK137293B (da) | 1978-02-13 |
| FR2199150A1 (OSRAM) | 1974-04-05 |
| DE2346249A1 (de) | 1974-03-21 |
| FR2199150B1 (OSRAM) | 1977-05-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |