IT1136527B - CAPACITIVE SMOKE DETECTOR WITH WEAK SOURCE OF IONIZATION - Google Patents

CAPACITIVE SMOKE DETECTOR WITH WEAK SOURCE OF IONIZATION

Info

Publication number
IT1136527B
IT1136527B IT83491/80A IT8349180A IT1136527B IT 1136527 B IT1136527 B IT 1136527B IT 83491/80 A IT83491/80 A IT 83491/80A IT 8349180 A IT8349180 A IT 8349180A IT 1136527 B IT1136527 B IT 1136527B
Authority
IT
Italy
Prior art keywords
ionization
capacitive
smoke detector
weak source
weak
Prior art date
Application number
IT83491/80A
Other languages
Italian (it)
Other versions
IT8083491A0 (en
Inventor
Louis Hugon
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 IT8083491A0 publication Critical patent/IT8083491A0/en
Application granted granted Critical
Publication of IT1136527B publication Critical patent/IT1136527B/en

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

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)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
IT83491/80A 1980-01-02 1980-12-31 CAPACITIVE SMOKE DETECTOR WITH WEAK SOURCE OF IONIZATION IT1136527B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8000048A FR2473201A1 (en) 1980-01-02 1980-01-02 CAPACITIVE SMOKE DETECTOR WITH LOW IONIZATION SOURCE

Publications (2)

Publication Number Publication Date
IT8083491A0 IT8083491A0 (en) 1980-12-31
IT1136527B true IT1136527B (en) 1986-08-27

Family

ID=9237176

Family Applications (1)

Application Number Title Priority Date Filing Date
IT83491/80A IT1136527B (en) 1980-01-02 1980-12-31 CAPACITIVE SMOKE DETECTOR WITH WEAK SOURCE OF IONIZATION

Country Status (5)

Country Link
BE (1) BE886940A (en)
DE (1) DE3100022A1 (en)
ES (1) ES8201334A1 (en)
FR (1) FR2473201A1 (en)
IT (1) IT1136527B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8847802B2 (en) 2011-10-06 2014-09-30 Microchip Technology Incorporated Microcontroller ADC with a variable sample and hold capacitor
US9252769B2 (en) 2011-10-07 2016-02-02 Microchip Technology Incorporated Microcontroller with optimized ADC controller
US9437093B2 (en) 2011-10-06 2016-09-06 Microchip Technology Incorporated Differential current measurements to determine ION current in the presence of leakage current
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
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
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
US9207209B2 (en) 2011-12-14 2015-12-08 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
US8884771B2 (en) 2012-08-01 2014-11-11 Microchip Technology Incorporated Smoke detection using change in permittivity of capacitor air dielectric

Family Cites Families (2)

* 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
BE790355A (en) * 1971-10-20 1973-02-15 Bevaknings A B Securitas SMOKE DETECTOR

Also Published As

Publication number Publication date
ES498274A0 (en) 1981-12-01
FR2473201B3 (en) 1982-10-01
ES8201334A1 (en) 1981-12-01
DE3100022A1 (en) 1981-12-17
BE886940A (en) 1981-04-16
FR2473201A1 (en) 1981-07-10
IT8083491A0 (en) 1980-12-31

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