FR2451750B1 - - Google Patents

Info

Publication number
FR2451750B1
FR2451750B1 FR8005903A FR8005903A FR2451750B1 FR 2451750 B1 FR2451750 B1 FR 2451750B1 FR 8005903 A FR8005903 A FR 8005903A FR 8005903 A FR8005903 A FR 8005903A FR 2451750 B1 FR2451750 B1 FR 2451750B1
Authority
FR
France
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
Application number
FR8005903A
Other versions
FR2451750A1 (fr
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
Priority claimed from JP1979033726U external-priority patent/JPS5844466Y2/ja
Priority claimed from JP3372779U external-priority patent/JPS5933111Y2/ja
Application filed by Hochiki Corp filed Critical Hochiki Corp
Publication of FR2451750A1 publication Critical patent/FR2451750A1/fr
Application granted granted Critical
Publication of FR2451750B1 publication Critical patent/FR2451750B1/fr
Granted 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
    • 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
    • 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

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)
FR8005903A 1979-03-17 1980-03-17 Detecteur d'incendie a discrimination de comptes Granted FR2451750A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1979033726U JPS5844466Y2 (ja) 1979-03-17 1979-03-17 蓄積型火災感知器
JP3372779U JPS5933111Y2 (ja) 1979-03-17 1979-03-17 蓄積型火災感知器

Publications (2)

Publication Number Publication Date
FR2451750A1 FR2451750A1 (fr) 1980-10-17
FR2451750B1 true FR2451750B1 (fr) 1983-03-25

Family

ID=26372472

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8005903A Granted FR2451750A1 (fr) 1979-03-17 1980-03-17 Detecteur d'incendie a discrimination de comptes

Country Status (5)

Country Link
US (1) US4260984A (fr)
CH (1) CH636211A5 (fr)
DE (1) DE3009970A1 (fr)
FR (1) FR2451750A1 (fr)
GB (1) GB2044504B (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6014398B2 (ja) * 1981-03-18 1985-04-12 ホーチキ株式会社 光電式煙感知器
CH657221A5 (de) * 1981-06-15 1986-08-15 Cerberus Ag Rauchdetektor.
US4482852A (en) * 1981-06-24 1984-11-13 Westinghouse Electric Corp. Motor slip controller for AC motors
DE3369213D1 (en) * 1982-05-13 1987-02-19 Cerberus Ag Smoke detector according to the radiation-extinction principle
US4760400A (en) * 1986-07-15 1988-07-26 Canadian Marconi Company Sandwich-wire antenna
US4763115A (en) * 1986-12-09 1988-08-09 Donald L. Trigg Fire or smoke detection and alarm system
DE8800651U1 (fr) * 1988-01-21 1988-08-25 Huang, Ding-Li, Sun-Chung, Taipei, Tw
GB9014015D0 (en) * 1990-06-23 1990-08-15 Dennis Peter N J Improvements in or relating to smoke detectors
GB2274333B (en) * 1993-01-07 1996-12-11 Hochiki Co Smoke detecting apparatus capable of detecting both smoke and fine particles
US5914656A (en) * 1997-04-10 1999-06-22 Nexsys Comtech International, Inc. Environmental condition detector transmitter interface
JP3588535B2 (ja) * 1997-06-30 2004-11-10 ホーチキ株式会社 煙感知装置
US6111511A (en) * 1998-01-20 2000-08-29 Purdue Research Foundations Flame and smoke detector
DE102011108389A1 (de) * 2011-07-22 2013-01-24 PPP "KB Pribor" Ltd. Rauchdetektor
US9437093B2 (en) 2011-10-06 2016-09-06 Microchip Technology Incorporated Differential current measurements to determine ION current in the presence of leakage current
US9257980B2 (en) 2011-10-06 2016-02-09 Microchip Technology Incorporated Measuring capacitance of a capacitive sensor with a microcontroller having digital outputs for driving a guard ring
US9467141B2 (en) 2011-10-07 2016-10-11 Microchip Technology Incorporated Measuring capacitance of a capacitive sensor with a microcontroller having an analog output for driving a guard ring
US9252769B2 (en) 2011-10-07 2016-02-02 Microchip Technology Incorporated Microcontroller with optimized ADC controller
US9207209B2 (en) * 2011-12-14 2015-12-08 Microchip Technology Incorporated Method and apparatus for detecting smoke in an ion chamber
US9176088B2 (en) 2011-12-14 2015-11-03 Microchip Technology Incorporated Method and apparatus for detecting smoke in an ion chamber
US9189940B2 (en) 2011-12-14 2015-11-17 Microchip Technology Incorporated Method and apparatus for detecting smoke in an ion chamber
US9823280B2 (en) 2011-12-21 2017-11-21 Microchip Technology Incorporated Current sensing with internal ADC capacitor

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3846772A (en) * 1972-08-11 1974-11-05 Chubb Fire Security Ltd Fire detector responsive to amplitude modulation of a pulsed em beam
US3842409A (en) * 1972-12-13 1974-10-15 Unitec Inc Ionization detector apparatus
US3946241A (en) * 1973-11-26 1976-03-23 Pyrotector, Incorporated Light detector with pulsed light source and synchronous data gating
US4015121A (en) * 1974-07-11 1977-03-29 Allca Instruments Co. Ltd. Catalsimeter with time measuring circuitry for determining reactant concentration level
US4011458A (en) * 1975-10-09 1977-03-08 Pyrotector, Incorporated Photoelectric detector with light source intensity regulation
JPS5231699A (en) * 1975-07-25 1977-03-10 Hochiki Corp Fire senser
JPS52153759A (en) * 1976-06-17 1977-12-21 Hochiki Co Storage type detector
US4186390A (en) * 1976-08-30 1980-01-29 Electro Signal Lab, Inc. Battery powered smoke detector
JPS5354000A (en) * 1976-10-26 1978-05-16 Matsushita Electric Works Ltd Detection signal processing circuit of photoelectric type smoke detectors
US4163969A (en) * 1977-06-20 1979-08-07 American District Telegraph Company Variable frequency light pulser for smoke detectors
JPS5760147Y2 (fr) * 1977-07-04 1982-12-22
US4125779A (en) * 1977-07-13 1978-11-14 Chloride, Incorporated Smoke detector
US4185278A (en) * 1977-09-22 1980-01-22 HF Systems, Incorporated Obscuration type smoke detector
US4193069A (en) * 1978-03-13 1980-03-11 American District Telegraph Company Latching alarm smoke detector

Also Published As

Publication number Publication date
US4260984A (en) 1981-04-07
GB2044504B (en) 1983-04-20
DE3009970A1 (de) 1980-09-18
CH636211A5 (fr) 1983-05-13
GB2044504A (en) 1980-10-15
FR2451750A1 (fr) 1980-10-17

Similar Documents

Publication Publication Date Title
BR8002583A (fr)
FR2451750B1 (fr)
BR8006808A (fr)
DE3014670C2 (fr)
DE2942994C2 (fr)
AU78386S (fr)
AU79918S (fr)
AU78270S (fr)
AU78271S (fr)
AU80228S (fr)
AU78385S (fr)
AU79950S (fr)
AU78569S (fr)
AU78389S (fr)
AU77763S (fr)
AU78390S (fr)
AU79826S (fr)
AU79559S (fr)
AU79558S (fr)
AU78391S (fr)
BR5901094U (fr)
AU79557S (fr)
AU79200S (fr)
AU77669S (fr)
BG28728A1 (fr)

Legal Events

Date Code Title Description
ST Notification of lapse