GB2117560B - Capacitive smoke detector - Google Patents

Capacitive smoke detector

Info

Publication number
GB2117560B
GB2117560B GB08229446A GB8229446A GB2117560B GB 2117560 B GB2117560 B GB 2117560B GB 08229446 A GB08229446 A GB 08229446A GB 8229446 A GB8229446 A GB 8229446A GB 2117560 B GB2117560 B GB 2117560B
Authority
GB
United Kingdom
Prior art keywords
capacitive
smoke detector
smoke
detector
capacitive smoke
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.)
Expired
Application number
GB08229446A
Other versions
GB2117560A (en
Inventor
Emile Hugon
Electronic La Societe Gamma
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.)
GAMMA ELECTRONIC
Original Assignee
GAMMA ELECTRONIC
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 GAMMA ELECTRONIC filed Critical GAMMA ELECTRONIC
Publication of GB2117560A publication Critical patent/GB2117560A/en
Application granted granted Critical
Publication of GB2117560B publication Critical patent/GB2117560B/en
Expired 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
    • G08B17/11—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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
GB08229446A 1982-03-09 1982-10-14 Capacitive smoke detector Expired GB2117560B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8203897A FR2523309A1 (en) 1982-03-09 1982-03-09 NEW CAPACITIVE SMOKE DETECTOR WITH INTERCHANGEABLE MODULES

Publications (2)

Publication Number Publication Date
GB2117560A GB2117560A (en) 1983-10-12
GB2117560B true GB2117560B (en) 1986-04-16

Family

ID=9271767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08229446A Expired GB2117560B (en) 1982-03-09 1982-10-14 Capacitive smoke detector

Country Status (4)

Country Link
JP (1) JPS58154092A (en)
CH (1) CH649639A5 (en)
FR (1) FR2523309A1 (en)
GB (1) GB2117560B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104508717A (en) * 2012-08-01 2015-04-08 密克罗奇普技术公司 Smoke detection using change in permittivity of capacitor air dielectric

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101294923B (en) * 2008-05-29 2011-03-02 中国科学技术大学 Capacitor type smoke detector
US8847802B2 (en) 2011-10-06 2014-09-30 Microchip Technology Incorporated Microcontroller ADC with a variable sample and hold capacitor
US9437093B2 (en) 2011-10-06 2016-09-06 Microchip Technology Incorporated Differential current measurements to determine ION current in the presence of leakage current
US9252769B2 (en) 2011-10-07 2016-02-02 Microchip Technology Incorporated Microcontroller with optimized ADC controller
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
US9071264B2 (en) 2011-10-06 2015-06-30 Microchip Technology Incorporated Microcontroller with sequencer driven analog-to-digital converter
US9207209B2 (en) 2011-12-14 2015-12-08 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
US9176088B2 (en) * 2011-12-14 2015-11-03 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
CN106846710A (en) * 2017-04-06 2017-06-13 安徽理工大学 A kind of novel domestic intelligence smoke alarm
CN108561701A (en) * 2018-06-11 2018-09-21 天津永汇仁恒科技股份有限公司 Novel smoke detector connecting device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH508251A (en) * 1970-07-23 1971-05-31 Cerberus Ag Ionization fire alarms
CH551057A (en) * 1973-04-17 1974-06-28 Cerberus Ag IONIZATION ALARM.
US3959788A (en) * 1974-05-10 1976-05-25 General Signal Corporation Ionization-type fire detector
JPS5552558Y2 (en) * 1975-02-10 1980-12-05
BE831296A (en) * 1975-07-11 1975-11-03 ION DETECTOR
GB1581236A (en) * 1976-07-02 1980-12-10 Chloride Group Ltd Ionisation detector chamber
DE2652970C3 (en) * 1976-11-22 1979-09-06 Hartwig Ing.(Grad.) 2409 Scharbeutz Beyersdorf Ionization fire detectors
FR2386874A1 (en) * 1977-04-08 1978-11-03 Gamma Electronic IONIZATION SMOKE DETECTOR ASSOCIATED WITH AN ELECTRONIC VELOCIMETRIC MEASUREMENT CIRCUIT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104508717A (en) * 2012-08-01 2015-04-08 密克罗奇普技术公司 Smoke detection using change in permittivity of capacitor air dielectric

Also Published As

Publication number Publication date
JPS58154092A (en) 1983-09-13
FR2523309A1 (en) 1983-09-16
FR2523309B3 (en) 1985-01-11
CH649639A5 (en) 1985-05-31
GB2117560A (en) 1983-10-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee