CH670718A5 - - Google Patents
Download PDFInfo
- Publication number
- CH670718A5 CH670718A5 CH1319/87A CH131987A CH670718A5 CH 670718 A5 CH670718 A5 CH 670718A5 CH 1319/87 A CH1319/87 A CH 1319/87A CH 131987 A CH131987 A CH 131987A CH 670718 A5 CH670718 A5 CH 670718A5
- Authority
- CH
- Switzerland
- Prior art keywords
- light
- light emitting
- charging
- emitting device
- capacitor
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 claims description 94
- 238000001514 detection method Methods 0.000 claims description 55
- 239000000725 suspension Substances 0.000 claims description 3
- 239000000779 smoke Substances 0.000 description 59
- 239000007789 gas Substances 0.000 description 16
- 230000006870 function Effects 0.000 description 11
- 230000001186 cumulative effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 230000002238 attenuated effect Effects 0.000 description 3
- 230000005669 field effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000001955 cumulated effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Classifications
-
- 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
- G08B17/103—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
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
- G01J1/46—Electric circuits using a capacitor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
- G01J1/1626—Arrangements with two photodetectors, the signals of which are compared
- G01J2001/1636—Arrangements with two photodetectors, the signals of which are compared one detector directly monitoring the source, e.g. also impulse time controlling
-
- 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
- G01N2021/1748—Comparative step being essential in the method
- G01N2021/1751—Constructive features therefore, e.g. using two measurement cells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/062—LED's
- G01N2201/0621—Supply
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/069—Supply of sources
- G01N2201/0696—Pulsed
-
- 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)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
- Measurement Of Current Or Voltage (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61079434A JPH0765963B2 (ja) | 1986-04-07 | 1986-04-07 | 減光式煙感知器 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH670718A5 true CH670718A5 (enExample) | 1989-06-30 |
Family
ID=13689770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1319/87A CH670718A5 (enExample) | 1986-04-07 | 1987-04-06 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4838698A (enExample) |
| JP (1) | JPH0765963B2 (enExample) |
| AU (1) | AU598527B2 (enExample) |
| CH (1) | CH670718A5 (enExample) |
| DE (1) | DE3711022A1 (enExample) |
| FI (1) | FI871477A7 (enExample) |
| FR (1) | FR2596862B1 (enExample) |
| GB (1) | GB2190191B (enExample) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0629983A1 (en) * | 1993-06-02 | 1994-12-21 | David Appleby | Obscuration type smoke detector |
| DE4320861A1 (de) * | 1993-06-23 | 1995-01-05 | Hekatron Gmbh | Schaltungsanordnung für einen optischen Melder zur Umweltüberwachung und Anzeige eines Störmediums |
| EP0886252B1 (de) * | 1997-06-16 | 2001-08-16 | Siemens Building Technologies AG | Optischer Rauchmelder nach dem Extinktionsprinzip |
| DE19749891B4 (de) * | 1997-11-12 | 2004-08-26 | Jürgen Dittrich | Verfahren zur Messung der Konzentration eines Gases in einem Gasgemisch, insbesondere in Luft, und Vorrichtung zur Durchführung des Verfahrens |
| CN109979151B (zh) * | 2019-03-28 | 2021-03-16 | 赛特威尔电子股份有限公司 | 一种烟雾报警方法、装置、烟雾报警设备及存储介质 |
| CN214895849U (zh) | 2021-01-28 | 2021-11-26 | 贝克曼库尔特生物科技（苏州）有限公司 | 气泡检测装置和样本处理仪 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3528749A (en) * | 1966-12-09 | 1970-09-15 | Itek Corp | Apparatus for measuring optical density |
| US3872315A (en) * | 1973-12-21 | 1975-03-18 | Babcock & Wilcox Co | Radiation sensitive fluid analyzer |
| US3954342A (en) * | 1974-03-28 | 1976-05-04 | Jan Boeke | Optical device for monitoring clarity of a fluid |
| US3992113A (en) * | 1974-11-20 | 1976-11-16 | Bruno Egli | Photometer circuitry for the digital indication of the light absorption of a test sample |
| SE7604502L (sv) * | 1976-04-15 | 1977-10-16 | Ericsson Telefon Ab L M | Optisk branddetektor |
| JPS5578397A (en) * | 1978-12-08 | 1980-06-12 | Matsushita Electric Industrial Co Ltd | Smoke sensor |
| JPS598876B2 (ja) * | 1980-05-22 | 1984-02-28 | ニッタン株式会社 | 透過光式煙感知器 |
| ATE24787T1 (de) * | 1980-12-18 | 1987-01-15 | Cerberus Ag | Rauchmelder nach dem strahlungs-extinktionsprinzip. |
| US4544273A (en) * | 1983-07-29 | 1985-10-01 | Particulate Instruments | Smoke opacity meter |
| JPS6033035A (ja) * | 1983-08-02 | 1985-02-20 | Hochiki Corp | 減光式煙感知器 |
| JPS60169740A (ja) * | 1984-02-14 | 1985-09-03 | Nippon Denso Co Ltd | 煙検出装置 |
| JPS60186994A (ja) * | 1984-03-05 | 1985-09-24 | ホーチキ株式会社 | 火災感知器 |
| US4621204A (en) * | 1984-07-26 | 1986-11-04 | Miles Laboratories, Inc. | Sensor integrator system |
| FI854809A7 (fi) * | 1984-12-18 | 1986-06-19 | Hochiki Co | Branddetektor som baserar sig pao minskat ljus. |
-
1986
- 1986-04-07 JP JP61079434A patent/JPH0765963B2/ja not_active Expired - Lifetime
-
1987
- 1987-03-31 US US07/033,065 patent/US4838698A/en not_active Expired - Fee Related
- 1987-04-02 AU AU71006/87A patent/AU598527B2/en not_active Ceased
- 1987-04-02 DE DE19873711022 patent/DE3711022A1/de not_active Withdrawn
- 1987-04-03 FI FI871477A patent/FI871477A7/fi not_active Application Discontinuation
- 1987-04-06 FR FR878704814A patent/FR2596862B1/fr not_active Expired - Lifetime
- 1987-04-06 CH CH1319/87A patent/CH670718A5/fr not_active IP Right Cessation
- 1987-04-07 GB GB8708258A patent/GB2190191B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB8708258D0 (en) | 1987-05-13 |
| GB2190191A (en) | 1987-11-11 |
| GB2190191B (en) | 1989-11-29 |
| AU598527B2 (en) | 1990-06-28 |
| JPH0765963B2 (ja) | 1995-07-19 |
| FI871477A0 (fi) | 1987-04-03 |
| AU7100687A (en) | 1987-10-08 |
| DE3711022A1 (de) | 1987-10-08 |
| FI871477A7 (fi) | 1987-10-08 |
| FR2596862B1 (fr) | 1991-02-08 |
| US4838698A (en) | 1989-06-13 |
| FR2596862A1 (fr) | 1987-10-09 |
| JPS62235547A (ja) | 1987-10-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased | ||
| PL | Patent ceased |