JPS649598A - Fire alarm equipment - Google Patents

Fire alarm equipment

Info

Publication number
JPS649598A
JPS649598A JP16394287A JP16394287A JPS649598A JP S649598 A JPS649598 A JP S649598A JP 16394287 A JP16394287 A JP 16394287A JP 16394287 A JP16394287 A JP 16394287A JP S649598 A JPS649598 A JP S649598A
Authority
JP
Japan
Prior art keywords
prescribed
sensor output
output level
sampled
level
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
Application number
JP16394287A
Other languages
Japanese (ja)
Other versions
JP2566243B2 (en
Inventor
Yoshiaki Okayama
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.)
Nohmi Bosai Ltd
Original Assignee
Nohmi Bosai Kogyo Co Ltd
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 Nohmi Bosai Kogyo Co Ltd filed Critical Nohmi Bosai Kogyo Co Ltd
Priority to JP62163942A priority Critical patent/JP2566243B2/en
Publication of JPS649598A publication Critical patent/JPS649598A/en
Application granted granted Critical
Publication of JP2566243B2 publication Critical patent/JP2566243B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Fire-Detection Mechanisms (AREA)

Abstract

PURPOSE:To raise an alarm while sensing a fire surely and early by integrating levels of a sensor output level over a 1st prescribed level or over and outputting an abnormality signal only when the rate of change of the sensor output level is positive after the integration value reaches a prescribed integration value. CONSTITUTION:A sensor output level is sampled for each prescribed time interval DELTAt and when the sensor output level SLV reaches the 1st prescribed level LV1 or over, a difference between the sampled sensor output level SLV and the 1st prescribed level LV1 is integrated for each prescribed time interval DELTAt. A discriminating means compares the integrated value SI with the prescribed integration value A and when it is discriminated that the integrated value SI reaches the prescribed integration value A, and when the sensor output level sampled this time is more than the sensor output level sampled precedingly substantially, a signal representing abnormality is outputted. Thus, stable fire detection is attained.
JP62163942A 1987-07-02 1987-07-02 Fire alarm Expired - Lifetime JP2566243B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62163942A JP2566243B2 (en) 1987-07-02 1987-07-02 Fire alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62163942A JP2566243B2 (en) 1987-07-02 1987-07-02 Fire alarm

Publications (2)

Publication Number Publication Date
JPS649598A true JPS649598A (en) 1989-01-12
JP2566243B2 JP2566243B2 (en) 1996-12-25

Family

ID=15783748

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62163942A Expired - Lifetime JP2566243B2 (en) 1987-07-02 1987-07-02 Fire alarm

Country Status (1)

Country Link
JP (1) JP2566243B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2961285B1 (en) 2013-02-27 2019-01-02 British American Tobacco (Investments) Ltd An inhalation device and component for an inhalation device
US10492526B2 (en) 2013-02-27 2019-12-03 British American Tobacco (Investments) Limited Inhalation device and inhalant apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2961285B1 (en) 2013-02-27 2019-01-02 British American Tobacco (Investments) Ltd An inhalation device and component for an inhalation device
US10470491B2 (en) 2013-02-27 2019-11-12 British American Tobacco (Investments) Limited Inhalation device and component for an inhalation device
US10492526B2 (en) 2013-02-27 2019-12-03 British American Tobacco (Investments) Limited Inhalation device and inhalant apparatus

Also Published As

Publication number Publication date
JP2566243B2 (en) 1996-12-25

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