DE19904535A1 - Lichthindernis-Rauchsensor - Google Patents

Lichthindernis-Rauchsensor

Info

Publication number
DE19904535A1
DE19904535A1 DE19904535A DE19904535A DE19904535A1 DE 19904535 A1 DE19904535 A1 DE 19904535A1 DE 19904535 A DE19904535 A DE 19904535A DE 19904535 A DE19904535 A DE 19904535A DE 19904535 A1 DE19904535 A1 DE 19904535A1
Authority
DE
Germany
Prior art keywords
light
level
generation control
sensor
circuit
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.)
Ceased
Application number
DE19904535A
Other languages
German (de)
English (en)
Other versions
DE1034737T1 (de
Inventor
Satoshi Nakajima
Isao Asano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hochiki Corp
Original Assignee
Hochiki Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hochiki Corp filed Critical Hochiki Corp
Publication of DE19904535A1 publication Critical patent/DE19904535A1/de
Ceased legal-status Critical Current

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
    • G08—SIGNALLING
    • G08B—SIGNALLING OR 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
    • G08B29/18—Prevention or correction of operating errors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
DE19904535A 1998-02-05 1999-02-04 Lichthindernis-Rauchsensor Ceased DE19904535A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10024358A JPH11224387A (ja) 1998-02-05 1998-02-05 減光式煙感知器

Publications (1)

Publication Number Publication Date
DE19904535A1 true DE19904535A1 (de) 1999-08-12

Family

ID=12135984

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19904535A Ceased DE19904535A1 (de) 1998-02-05 1999-02-04 Lichthindernis-Rauchsensor

Country Status (6)

Country Link
US (1) US6094143A (enExample)
JP (1) JPH11224387A (enExample)
AU (1) AU750314B2 (enExample)
CH (1) CH694649A5 (enExample)
DE (1) DE19904535A1 (enExample)
GB (1) GB2334096B (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4559664B2 (ja) * 2001-06-29 2010-10-13 ニッタン株式会社 光電分離型煙感知器および防災システム
DE60210738T2 (de) * 2002-01-16 2007-04-12 Leeds Electronic Eng. Ltd. Diebstahlschutzalarm mit reduzierter Verdrahtung
US8021469B2 (en) * 2005-07-14 2011-09-20 Access Business Group International Llc Control methods for an air treatment system
DE202007013986U1 (de) * 2007-10-05 2008-02-07 Cedes Ag Vorrichtung zur Steuerung eines angetriebenen Bewegungselements, insbesondere einer Tür oder eines Tores
CN106155861A (zh) * 2015-04-22 2016-11-23 鸿富锦精密工业(武汉)有限公司 电子设备报警电路
KR102508926B1 (ko) * 2022-06-09 2023-03-14 (주)전원테크 광전식 화재감지기의 수명을 관리할 수 있는 화재감시 시스템

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2074721B (en) * 1980-04-23 1983-09-07 Furnace Construction Co Ltd Smoke sensor apparatus
GB2095821B (en) * 1981-03-17 1985-08-21 Malinowski William J Self-calibrating smoke detector and method
JPS60144458U (ja) * 1984-03-05 1985-09-25 ホーチキ株式会社 火災検出装置
JPS61247918A (ja) * 1985-04-26 1986-11-05 Hochiki Corp アナログセンサの出力補正装置
GB9212060D0 (en) * 1992-06-04 1992-07-22 Appleby David Obscuration sensor
JP3231886B2 (ja) * 1993-03-31 2001-11-26 能美防災株式会社 光電式火災感知器
EP0629983A1 (en) * 1993-06-02 1994-12-21 David Appleby Obscuration type smoke detector
US5546074A (en) * 1993-08-19 1996-08-13 Sentrol, Inc. Smoke detector system with self-diagnostic capabilities and replaceable smoke intake canopy
FR2723233B1 (fr) * 1994-07-29 1996-10-04 Lewiner Jacques Perfectionnements aux detecteurs optiques de fumees
GB2314618B (en) * 1996-06-26 1999-12-29 David Appleby Smoke detector using light scatter and extinction
US5705988A (en) * 1996-07-08 1998-01-06 Detection Systems, Inc. Photoelectric smoke detector with count based A/D and D/A converter
US5831537A (en) * 1997-10-27 1998-11-03 Slc Technologies, Inc. Electrical current saving combined smoke and fire detector

Also Published As

Publication number Publication date
GB2334096A (en) 1999-08-11
CH694649A5 (de) 2005-05-13
US6094143A (en) 2000-07-25
AU1542899A (en) 1999-08-26
GB2334096B (en) 2002-05-29
AU750314B2 (en) 2002-07-18
JPH11224387A (ja) 1999-08-17

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
R002 Refusal decision in examination/registration proceedings
R003 Refusal decision now final

Effective date: 20120106