JPS4969099A - - Google Patents
Info
- Publication number
- JPS4969099A JPS4969099A JP48102253A JP10225373A JPS4969099A JP S4969099 A JPS4969099 A JP S4969099A JP 48102253 A JP48102253 A JP 48102253A JP 10225373 A JP10225373 A JP 10225373A JP S4969099 A JPS4969099 A JP S4969099A
- Authority
- JP
- Japan
- 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.)
- Pending
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
- G08B17/103—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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA726258A ZA726258B (en) | 1972-09-13 | 1972-09-13 | Fire detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4969099A true JPS4969099A (en) | 1974-07-04 |
Family
ID=25565379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP48102253A Pending JPS4969099A (en) | 1972-09-13 | 1973-09-12 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3921158A (en) |
| JP (1) | JPS4969099A (en) |
| CA (1) | CA1015042A (en) |
| DE (1) | DE2346249C3 (en) |
| DK (1) | DK137293B (en) |
| FR (1) | FR2199150B1 (en) |
| GB (1) | GB1436405A (en) |
| ZA (1) | ZA726258B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5193499U (en) * | 1975-01-24 | 1976-07-27 | ||
| JPS59206745A (en) * | 1983-04-05 | 1984-11-22 | イ− アイジ−デイ− リミテイド | Infrared absorption gas detecting monitor head and detector |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (en) * | 1999-09-22 | 2001-03-28 | Siemens Building Technologies AG | Optical smoke detector |
| US6876305B2 (en) * | 1999-12-08 | 2005-04-05 | Gentex Corporation | Compact particle sensor |
| DE10031555B4 (en) * | 2000-06-28 | 2010-04-15 | Robert Bosch Gmbh | Optical sensor |
| DE60325254D1 (en) * | 2002-08-23 | 2009-01-22 | Gen Electric | MMUNER ALARM SIGNAL GENERATION SMOKE DETECTOR |
| US7564365B2 (en) * | 2002-08-23 | 2009-07-21 | Ge Security, Inc. | Smoke detector and method of detecting smoke |
| CN103150590A (en) * | 2013-03-16 | 2013-06-12 | 赵明 | Positioning card for mine personnel |
| DE102013212512A1 (en) * | 2013-06-27 | 2015-01-15 | Robert Bosch Gmbh | Outer part for a device and device |
| CN103343701B (en) * | 2013-07-23 | 2018-09-21 | 北京圣博亚科技有限公司 | A kind of subsurface environment monitoring and warning system and its intelligence sensor |
| DE102014019773B4 (en) | 2014-12-17 | 2023-12-07 | Elmos Semiconductor Se | Device and method for distinguishing between solid objects, cooking fumes and smoke using the display of a mobile telephone |
| DE102014019172B4 (en) | 2014-12-17 | 2023-12-07 | Elmos Semiconductor Se | Device and method for distinguishing between solid objects, cooking fumes and smoke using a compensating optical measuring system |
| CN105089700A (en) * | 2015-08-10 | 2015-11-25 | 苏州欧可罗电子科技有限公司 | Mining safety monitoring system |
| CN107829780B (en) * | 2017-10-27 | 2019-11-05 | 精英数智科技股份有限公司 | A kind of gas false alarm recognition methods based on coal mine safety monitoring networked system |
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/en unknown
-
1973
- 1973-09-10 US US395747A patent/US3921158A/en not_active Expired - Lifetime
- 1973-09-10 GB GB4237573A patent/GB1436405A/en not_active Expired
- 1973-09-11 DK DK497973AA patent/DK137293B/en 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/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5193499U (en) * | 1975-01-24 | 1976-07-27 | ||
| JPS59206745A (en) * | 1983-04-05 | 1984-11-22 | イ− アイジ−デイ− リミテイド | Infrared absorption gas detecting monitor head and detector |
Also Published As
| Publication number | Publication date |
|---|---|
| AU6025073A (en) | 1975-03-13 |
| FR2199150B1 (en) | 1977-05-20 |
| DK137293C (en) | 1978-07-10 |
| CA1015042A (en) | 1977-08-02 |
| FR2199150A1 (en) | 1974-04-05 |
| GB1436405A (en) | 1976-05-19 |
| ZA726258B (en) | 1973-11-28 |
| DE2346249C3 (en) | 1978-05-03 |
| DE2346249B2 (en) | 1977-09-15 |
| DK137293B (en) | 1978-02-13 |
| US3921158A (en) | 1975-11-18 |
| DE2346249A1 (en) | 1974-03-21 |