EP3274975A1 - Brandmelder mit einer streulichtanordnung im bereich einer raucheintrittsöffnung zur verschmutzungsüberwachung - Google Patents
Brandmelder mit einer streulichtanordnung im bereich einer raucheintrittsöffnung zur verschmutzungsüberwachungInfo
- Publication number
- EP3274975A1 EP3274975A1 EP16703995.7A EP16703995A EP3274975A1 EP 3274975 A1 EP3274975 A1 EP 3274975A1 EP 16703995 A EP16703995 A EP 16703995A EP 3274975 A1 EP3274975 A1 EP 3274975A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- inlet opening
- detector
- smoke inlet
- receiver
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/02—Monitoring continuously signalling or alarm systems
- G08B29/04—Monitoring of the detection circuits
- G08B29/043—Monitoring of the detection circuits of fire detection circuits
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
- G08B17/107—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 for detecting light-scattering due to smoke
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
- G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
Definitions
- the invention relates to a fire detector, in particular an optical smoke detector.
- the fire detector has a
- Detector housing with a smoke inlet one in
- Detector unit arranged for detection of specific fire characteristics, an evaluation unit for outputting a fire alarm and at least one connected to the Ausnceein ⁇ unit of light emitter and light receiver for monitoring the smoke inlet opening to an inadmissible contamination out.
- Such a fire detector is e.g. from EP 1 857 989 A1 or from EP 1 870 866 A1.
- fire detectors are preferably smoke detectors, smoke detectors or smoke detectors as a unit. Compared to linear smoke detectors, they are designed as point detectors or point detectors.
- Such fire detectors have ⁇ typi cally a working according to the principle of scattered light optical see detection unit for detecting smoke particles.
- they may have a gas sensor for the detection of typical gases.
- such fire detectors may have a temperature sensor for detecting an inadmissibly high temperature in their environment.
- fire detectors can be connected via a common detector line, in particular via a two-wire line, signal and / or data technology with a fire alarm panel. They may also have an autonomous power supply, such as a battery.
- fire detectors can be a radio module for transmitting an alarm message, a warning message or a status information to an adjacent Fire detector or have a fire alarm panel. They can also be set up for forwarding an alarm message, warning message or status information transmitted by a neighboring fire detector via radio to another neighboring fire detector or to a fire alarm control panel.
- the light emitter and the light receiver are arranged in a scattered light arrangement.
- a stray light volume defined by the stray light arrangement lies in the region of the smoke inlet opening and, in particular, in a region of the smoke inlet opening that tends towards soiling.
- the smoke inlet opening itself can be divided two or more times un, for example by connecting webs. It can be composed of several slots or holes.
- the light transmitter is preferably a light emitting diode, such as an IR light emitting diode, a white, red, green or blue luminous LED or a UV light emitting diode.
- the light emitter may be a laser diode.
- the light receiver is typically a spectrally tuned to the light emitter photodiode or phototransistor.
- the light transmitter is arranged and oriented such that a first part of a full ⁇ emitted light beam passes through the area of the flue inlet opening, without affecting adjacent housing parts.
- the first part of the emitted light beam traverses the region of the smoke inlet opening without contact. This can be achieved for example by a light emitter downstream aperture.
- a laser beam as the first part of the light beam this is already sharply limited due to its optical generation.
- the housing part in the region of the smoke inlet opening is, for example, a base body or a detector cap of the detector housing, an insect screen or a connecting web between the base body and
- the insect repellent is in particular a net or grid.
- the light transmitter can be set up and aligned in such a way that a second part of the light beam impinges on a housing part adjoining the smoke inlet opening.
- the surface of the housing part is constructed and / or oriented such that the incident there second part of the beam is deflected away or absorbed by the light ⁇ receiver.
- the second housing part may for example be glossy or specular.
- Housing part is relative to the detector housing so determined that the reflected light beam is preferably deflected into the environment of the fire detector and thus away from the light receiver.
- the housing part may alternatively be a light-absorbing
- a service message can be output by means of the evaluation unit if the scattered light detected by the light receiver exceeds a minimum value.
- the Ser ⁇ vice message may also include a degree of pollution, such as having a percent, where 0% no pollution and 100% would mean a complete pollution.
- the evaluation unit is preferably a processor based processing unit such as a microcontroller or Pro ⁇ cessor. It can also be used as (electronic) control unit ⁇ be distinguished.
- the service message can be relayed wirelessly or via a connected bus, for example, to a higher level of fire ⁇ register central to inform service personnel for an upcoming cleaning of the respective fire detector.
- the service message can alternatively or additionally be issued by a luminous or flashing LED, or by a warning beeper of the fire detector.
- the evaluation unit can also be set up to control the light transmitters one after the other. It can be set up to selectively detect and evaluate a received signal of the at least one associated light receiver.
- the essence of the invention lies in the fact that the light scattered by soiling and then detectable is used as a measure of the contamination of a fire detector.
- a non-polluted fire detector such as in Neu ⁇ state
- the scattering cross section in the scattered light volume also increases, with the result that the scattered light also increases with increasing contamination. Due to the high dynamic range of a photoreceiver, the possible extent of contamination can thus advantageously be determined.
- the extinction principle is used in the prior art, in which the light emitter and the light receiver are located on a common optical axis. In this case, the attenuation of the received light is determined due to contamination.
- the disadvantage of the principle is the low Dyna ⁇ mik Symposium and in the difficult calibration of this arrangement to a maximum light value for a Dolphinschmut- wetting. In order to avoid a false alarm, therefore, the limit for the light to be detected is set low.
- the detector housing is essentially symmetrical, in particular rotationally symmetrical. It has an axis of symmetry.
- the symmetry axis is preferably also the constructive main axis of the
- Fire detector housing There are a plurality of light emitters and light ⁇ receivers arranged circumferentially about the axis of symmetry in a respective scattered light arrangement in the region of the smoke inlet opening. Thereby, the entire ge ⁇ smoke inlet opening along its entire circumference to an unacceptable pollution is advantageous toward monitored.
- the light transmitters and light receivers may alternate in the circumferential direction. Preferably, these are distributed uniformly ent ⁇ long of the circumference.
- the respective Lichtsen ⁇ that can be designed such that it is arranged in each case in a scattered light arrangement to its two circumferentially adjacent light receivers.
- a respective light transmitter and a respective light receiver are in a sprinkling arrangement arranged with a scattered light angle in the range of 20 ° to 80 °.
- a respective light emitter and a respective light receiver may also be arranged in a backward scattering order with a scattered light angle in the range of 110 ° to 150 °.
- a respective light transmitter and a respective light receiver can be combined to form a light-emitting receiver as a structural unit.
- Light transmitters and light receivers are then arranged in a backward scattering arrangement with a scattered light angle in the range of 150 ° to 180 °.
- the advantage with this embodiment lies in the integration of light emitter and light receiver in a single component.
- a respective light transmitter, a respective light receiver and / or a respective light-emitting receiver is arranged on a circuit carrier in the detector housing. It is the respective light emitter, the light receiver and / or the light transceiver a
- Detector housing for light extraction and / or light coupling passed in the smoke inlet opening By “upstream” is meant that a first end of the
- Optical fiber for light coupling and / or light extraction of the respective optically active surface of the light transmitter
- a respective light transmitter is arranged on a circuit carrier in the detector housing. It is the respective light emitter upstream of a light guide, wherein an opposite (second) end ⁇ piece of the respective light guide through the detector housing for light extraction in the region of the smoke inlet opening
- the respective light receiver is arranged on the detector cap in the region of the smoke inlet opening.
- the respective (second) end piece of a light ⁇ conductor is an optical lens and / or it is formed as an optical prism.
- the respective light guide is at the same time part of a connecting web between a main body and a detector cap of the detector housing.
- the integration of the light guide into the connecting web protects the optical fibers against mechanical influences.
- FIG. 1 is a plan view of an exemplary fire detector with three light emitters and three light receivers for pollution monitoring according to the invention
- FIG. 2 shows a plan view of two stray light arrangements in FIG
- FIG. 3 shows a side view of the fire detector according to FIG. 1 along the viewing direction III entered there.
- FIG. 1 shows a plan view of an exemplary fire damper M with three light transmitters 1 and three light receivers 2 for contamination monitoring according to the invention.
- the fire detector M shown is in particular an optical smoke detector. It typically has a detection unit DET arranged in the detector housing 3 for detecting specific fire characteristics.
- the detection unit DET is shielded from direct ambient light, e.g. through fins, but permeable to smoke to be detected.
- the housing 3 shown comprises a main body 4 and a so-called detector cap 5 placed therefrom. Between these two
- Housing parts 4, 5 is formed a smoke inlet opening OF for the possible passage of smoke to be detected towards the detection unit DET.
- N denotes an insect repellent is, the ten ingress of insects or spiders ver prevents ⁇ in the interior of the detecting unit DET. It is typically a grid or a net.
- the fire detector M further comprises an evaluation unit 7 for outputting a fire alarm AL.
- the evaluation unit 7 is typically processor-based and in particular a microcontroller.
- the output of the fire alarm AL can take place via a closed to ⁇ detector line via radio and / or via a visual and / or audible indicator at the fire detector M.
- at least one light transmitter 1 and one light receiver 2 are connected to the evaluation unit 7. They are provided for monitoring the smoke inlet opening OF on an inadmissible pollution V out.
- three light transmitter 1 in the circumferential direction about an axis of symmetry Z of the fire detector M are arranged in the same ⁇ moderately distributed.
- three light receivers 2 are likewise arranged in the circumferential direction.
- the at least one light transmitter 1 and the at least one light receiver 2 are arranged in a scattered light arrangement.
- scattered light arrangement is meant that kei ⁇ ner of the light receiver 2 is directed excluded on one of the light transmitter 1. In other words, receiving the respective light receiver 2 from the respective direct light
- Light transmitter 1 a common scattered light arrangement. Light emitter and associated light receiver are thus not on a common optical axis.
- the three light emitters 1 each emit two light bundles L 1, L 2 to the two light receivers 2 adjacent in the circumferential direction.
- a respective scattered light volume SV is set such that it is in a too Ver ⁇ dirt V prone area of the flue inlet opening OF.
- the scattered light volume SV1, SV2 formed two scattered light arrangements are shown in detail.
- the light emitter 1, 11, 12 can be arranged and aligned in such a way that a first part D of an emitted light beam LI traverses the area of the smoke entrance opening OF, without adjacent ones
- the light beam LI is preferably sharp ⁇ be limited. This can be done for example by a diaphragm which is connected downstream of a respective light transmitter 1.
- the emitted light beam LI is already sharply defined.
- both light beams LI emitted by the light transmitters 11, 12 pass through the area of the smoke inlet opening OF without contact.
- the first part D of the emitted light beam LI corresponds to the light beam LI itself.
- the boundary of the light beam LI, L2 is indicated by dotted edge rays R marked.
- the light transmitter 1 is also set up and aligned in such a way that a second part A of the light beam L2 impinges on a housing part 4, 5, 8, N adjoining the smoke inlet opening OF.
- this is ⁇ the two of the light transmitters 11, 13 emitted light beams L2 of the case.
- the upper surface of the housing part is 4, 5, 8, N constructed and directed from ⁇ that the incident part A of the second there
- Light beam L2 is deflected away from the light receiver 2.
- the adjacent housing part is N, i. the insect repellent, reflective.
- the outer surfaces of the insect screen N are in relation to that of the
- Light emitters 11, 13 incident light optically oriented so that the reflected second part A of the light ⁇ bundle L2 does not reach the associated light receiver 2.
- a first part D of the second light bundle L2 also passes through the area of the smoke inlet opening OF in a contact-free manner.
- FIG. 2 shows a plan view of two scattered light arrangements in FIG. 1 in detail, formed by the two light transmitters 11, 12 and the common light receiver 2.
- EB denotes the reception area of the light receiver 2. This is preferably sharply defined, such as by means of a switched before ⁇ aperture.
- SV1 with a first scattered light volume is indicated, which comprises Thomasvo ⁇ lumen is in geometrical terms of the light beam LI of the light emitter 11 and the Emp ⁇ EB capture range of the light receiver. 2 With SV2 a second scattered light volume is designated, which in a corresponding manner the cutting volume from the light beam LI of
- Light transmitter 12 and the reception area EB of the light receiver 2 is.
- the two scattered light ⁇ volumes SV1, SV2 shown hatched, which overlap in part, are in the range of the smoke inlet opening OF.
- FIG. 3 shows a side view of the fire detector M according to FIG. 1 along the viewing direction III entered there.
- this representation it can be seen, on the one hand, how a second part A of the light beam L2 emitted by the light emitter 13 both on the insect screen N and on an outer contour of the light beam
- Detector cap 5 is reflected such that no light of the light beam L2 reaches the associated light receiver 2. In contrast, part of the light beam emitted by the light emitter 13 LI is scattered at the local pollution V and detected as scattered light S from the light receiver 2. With G are designated by the pollution V damped, attenuated light rays.
- the Brandmel ⁇ M a arranged in the detector housing 3 circuit carrier 6, on which the three light emitter 1 and the three Lichtemp ⁇ catcher 2 are arranged. They are each preceded by a light guide 8 for light extraction and / or light coupling in the smoke inlet opening OF.
- the respective light guides 8 are characterized by a corresponding recess in
- the six light guides 8 protrude low ⁇ philgig, such as in the range of 1 mm to 10 mm, body from the base 4 out.
- the light guides 8 are preferably made of egg ⁇ nem rod-shaped, cylindrical plastic, which is transparent to light in the wavelength range of the light emitted by the light emitters 1 light.
- the respective end piece 14 may be such that two light bundles LI, L2, as shown in FIG. 1, are emitted.
- the optical fibers 8 connected upstream of the light receivers 2 are such that light can be detected in a predetermined reception region EB, as shown by way of example in FIG.
- the use of optical fibers 8 advantageously enables a simple mechanical construction of the fire detector M.
- the light emitter 1 and / or the light receiver 2 can also be arranged directly in the area of the smoke inlet opening OF. This can be an optical means for the
- Lichtauskopplung or upstream for the light coupling such as an optical lens and / or an optical prism and / or a diaphragm.
- the corresponding electrical connections are then preferably connected to the circuit carrier 6 and via this to the evaluation unit 7 for the electrical control of the light transmitter 1 and for the detection of the jewei- ligen electrical signals from the light receivers 2 connected.
- FIG 4 shows a side view of a fire engine according to the invention M according to a first embodiment.
- the light emitters 1 downstream light guides 8 at the same time also part of a connecting web 9, which connects the base ⁇ body 4 mechanically with the detector cap 5.
- the associated end piece 14 of the light guide 8 and the connecting web 9 is designed as a prism, which is arranged at a 45 ° angle with respect to the incident light beam of the light emitter 1.
- the light beam L is deflected by 90 ° and to monitor in the ⁇ the area of the flue inlet opening OF passed.
- the inclined by 45 ° surface of the end piece 14 or the adjoining part of the connecting web 9 may also be mirrored.
- the light guides 8, which are connected upstream of the light receivers 2, part of such a connecting web 9 may be.
- a light emitting receiver is referred to as a unit comprising a light emitter 1 and a light ⁇ receiver 2.
- the light-emitting receiver 10 is in turn arranged on a circuit carrier 6 in the main body 4 of the fire detector M.
- Light emitter 1 and light receiver 2 are exemplary in a backward scattering arrangement with a
- the light-emitting receiver 10 is followed by a light guide 8, which is connected both to
- Light coupling is provided as well as for light extraction.
- the light guide 8 is passed through a recess 8 in the base body 4 in the region of the smoke inlet opening OF.
- the end piece 14 projecting into this region is such that one emitted by the light emitter 1
- Light bundle L in the area of the smoke inlet opening OF um- is deflected and that stray light from this area can be coupled to the reverse ⁇ way for detection by the light receiver 2 again.
- B denotes a diaphragm which greatly reduces crosstalk of emitted light of the light transmitter 1 directly to the light receiver 2.
- the fire detector M has a plurality of such light-emitting receiver 10 distributed in the circumferential direction in the region of the smoke inlet opening OF.
- FIG. 6 shows a side view of an inventive fire detector ⁇ M according to a second embodiment.
- a respective light receiver 2 ⁇ adjacent to the smoke inlet opening OF at the detector cap 5 of the fire alarm M is brought to ⁇ .
- this light receiver 2 ⁇ is also scattered light S in the event of contamination V detectable.
- optical coupling element optical tail A deflected light beam
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Computer Security & Cryptography (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Environmental & Geological Engineering (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP15160271.1A EP3073458A1 (de) | 2015-03-23 | 2015-03-23 | Brandmelder mit einer streulichtanordnung im bereich einer raucheintrittsöffnung zur verschmutzungsüberwachung |
| PCT/EP2016/052961 WO2016150613A1 (de) | 2015-03-23 | 2016-02-12 | Brandmelder mit einer streulichtanordnung im bereich einer raucheintrittsöffnung zur verschmutzungsüberwachung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3274975A1 true EP3274975A1 (de) | 2018-01-31 |
| EP3274975B1 EP3274975B1 (de) | 2018-11-21 |
Family
ID=52807580
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15160271.1A Withdrawn EP3073458A1 (de) | 2015-03-23 | 2015-03-23 | Brandmelder mit einer streulichtanordnung im bereich einer raucheintrittsöffnung zur verschmutzungsüberwachung |
| EP16703995.7A Active EP3274975B1 (de) | 2015-03-23 | 2016-02-12 | Brandmelder mit einer streulichtanordnung im bereich einer raucheintrittsöffnung zur verschmutzungsüberwachung |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15160271.1A Withdrawn EP3073458A1 (de) | 2015-03-23 | 2015-03-23 | Brandmelder mit einer streulichtanordnung im bereich einer raucheintrittsöffnung zur verschmutzungsüberwachung |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US10573167B2 (de) |
| EP (2) | EP3073458A1 (de) |
| CN (1) | CN107646129B (de) |
| WO (1) | WO2016150613A1 (de) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3073458A1 (de) | 2015-03-23 | 2016-09-28 | Siemens Schweiz AG | Brandmelder mit einer streulichtanordnung im bereich einer raucheintrittsöffnung zur verschmutzungsüberwachung |
| EP3287999A1 (de) * | 2016-08-25 | 2018-02-28 | Siemens Schweiz AG | Verfahren zur branddetektion nach dem streulichtprinzip mit gestaffelter zuschaltung einer weiteren led-einheit zum einstrahlen weiterer lichtimpulse unterschiedlicher wellenlänge und streulichtwinkel sowie derartige streulichtrauchmelder |
| AU2018278833B2 (en) * | 2017-05-31 | 2023-09-21 | Eric V. Gonzales | Smoke device and smoke detection circuit |
| EP3454311B1 (de) * | 2017-09-08 | 2020-06-10 | Tyco Fire & Security GmbH | Kammerloser rauchmelder |
| US11788942B2 (en) | 2017-12-15 | 2023-10-17 | Analog Devices, Inc. | Compact optical smoke detector system and apparatus |
| US10809173B2 (en) * | 2017-12-15 | 2020-10-20 | Analog Devices, Inc. | Smoke detector chamber boundary surfaces |
| USD874964S1 (en) | 2018-11-06 | 2020-02-11 | Analog Devices, Inc. | Blocking members in a smoke detector chamber |
| USD920825S1 (en) | 2018-11-06 | 2021-06-01 | Analog Devices, Inc. | Smoke detector chamber |
| US12211370B2 (en) | 2018-12-02 | 2025-01-28 | Analog Devices, Inc. | Fire detection system |
| US11195400B2 (en) * | 2019-02-20 | 2021-12-07 | Jade Bird Fire Co., Ltd. | Smoke detector and method for detecting smoke |
| US10921367B2 (en) | 2019-03-06 | 2021-02-16 | Analog Devices, Inc. | Stable measurement of sensors methods and systems |
| US11796445B2 (en) | 2019-05-15 | 2023-10-24 | Analog Devices, Inc. | Optical improvements to compact smoke detectors, systems and apparatus |
| EP4078550A1 (de) * | 2019-12-20 | 2022-10-26 | Siemens Schweiz AG | Messkammer zur anbringung auf einer rauchdetektionseinheit mit einer lichtfalle nach dem prinzip einer fresnel-stufenlinse |
| CN111696307B (zh) * | 2020-06-10 | 2021-04-02 | 深圳泽保智能科技有限公司 | 一种探测火灾的光学探测装置 |
| CN114170756B (zh) * | 2021-11-10 | 2024-08-27 | 三明学院 | 一种火灾烟雾识别器及其方法、装置、可读存储介质 |
| US12196665B2 (en) * | 2021-11-18 | 2025-01-14 | Honeywell International Inc. | Optical chamber for smoke detection with reflective surfaces |
| GB2616858A (en) * | 2022-03-21 | 2023-09-27 | Fireangel Safety Tech Limited | Safety alarm |
| US12542041B2 (en) * | 2023-04-16 | 2026-02-03 | Kidde Fire Protection, Llc | Self-testing smoke detector having an electrochromic film |
| US20250123204A1 (en) * | 2023-10-12 | 2025-04-17 | Honeywell International Inc. | Optical chamber base with integrated reflective surfaces for particle detection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3831654A1 (de) * | 1988-09-17 | 1990-03-22 | Hartwig Beyersdorf | Optischer rauchmelder |
| JPH02181297A (ja) * | 1989-01-06 | 1990-07-16 | Oki Denki Bosai Kk | 試験機能付煙感知器 |
| CH683464A5 (de) * | 1991-09-06 | 1994-03-15 | Cerberus Ag | Optischer Rauchmelder mit aktiver Ueberwachung. |
| US5659292A (en) * | 1995-02-21 | 1997-08-19 | Pittway Corporation | Apparatus including a fire sensor and a non-fire sensor |
| JP3213211B2 (ja) * | 1995-07-20 | 2001-10-02 | ホーチキ株式会社 | 光電式煙感知器 |
| AUPN965896A0 (en) * | 1996-05-03 | 1996-05-30 | Vision Products Pty Ltd | The detection of airborne pollutants |
| DE102006023048C5 (de) | 2006-05-17 | 2014-12-11 | Techem Energy Services Gmbh | Brandwarnmelder und Verfahren zur Überprüfung dessen Funktionsfähigkeit |
| ATE464629T1 (de) | 2006-06-24 | 2010-04-15 | Brunata Waermemesser Hagen Gmb | Rauchwarnmelder |
| EP2093732A1 (de) | 2008-02-19 | 2009-08-26 | Siemens Aktiengesellschaft | Vorrichtung und Verfahren zum Detektieren von Rauch durch gemeinsame Auswertung zweier optischer Rückstreusignale |
| ATE507544T1 (de) * | 2008-02-19 | 2011-05-15 | Siemens Ag | Rauchdetektion mittels zweier spektral unterschiedlicher streulichtmessungen |
| DE102009047533A1 (de) * | 2009-12-04 | 2011-06-09 | Atral- Secal Gmbh | Rauchmelder mit Infrarot-Abdecküberwachung |
| US8547238B2 (en) | 2010-06-30 | 2013-10-01 | Knowflame, Inc. | Optically redundant fire detector for false alarm rejection |
| FR2964743B1 (fr) | 2010-09-14 | 2015-06-26 | Finsecur | Circuit de detection de fumee, detecteur de fumee le comportant et dispositif d'alarme les comportant. |
| DE102010041693B4 (de) * | 2010-09-30 | 2021-08-19 | Robert Bosch Gmbh | Verfahren zum Prüfen der Funktionsfähigkeit eines photoelektrischen Rauchmelders sowie Rauchmelder zur Durchführung des Verfahrens |
| JP6145041B2 (ja) * | 2011-06-30 | 2017-06-07 | ホーチキ株式会社 | 散乱光式煙検出装置 |
| US9251683B2 (en) * | 2011-09-16 | 2016-02-02 | Honeywell International Inc. | Flame detector using a light guide for optical sensing |
| US9098988B2 (en) * | 2012-12-18 | 2015-08-04 | Excelitas Technologies Philippines Inc. | Integrated smoke cell |
| CN104408863A (zh) | 2014-11-05 | 2015-03-11 | 中国科学技术大学先进技术研究院 | 一种双光路火灾烟雾探测烟室 |
| CN104392577B (zh) | 2014-12-08 | 2016-08-31 | 王殊 | 一种基于双波长散射信号的气溶胶粒径传感方法 |
| EP3073458A1 (de) | 2015-03-23 | 2016-09-28 | Siemens Schweiz AG | Brandmelder mit einer streulichtanordnung im bereich einer raucheintrittsöffnung zur verschmutzungsüberwachung |
-
2015
- 2015-03-23 EP EP15160271.1A patent/EP3073458A1/de not_active Withdrawn
-
2016
- 2016-02-12 CN CN201680029954.2A patent/CN107646129B/zh active Active
- 2016-02-12 US US15/560,609 patent/US10573167B2/en active Active
- 2016-02-12 WO PCT/EP2016/052961 patent/WO2016150613A1/de not_active Ceased
- 2016-02-12 EP EP16703995.7A patent/EP3274975B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3073458A1 (de) | 2016-09-28 |
| WO2016150613A1 (de) | 2016-09-29 |
| EP3274975B1 (de) | 2018-11-21 |
| CN107646129A (zh) | 2018-01-30 |
| US20180061215A1 (en) | 2018-03-01 |
| US10573167B2 (en) | 2020-02-25 |
| CN107646129B (zh) | 2019-12-24 |
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