JPS52133796A - Fire alarm - Google Patents

Fire alarm

Info

Publication number
JPS52133796A
JPS52133796A JP5066376A JP5066376A JPS52133796A JP S52133796 A JPS52133796 A JP S52133796A JP 5066376 A JP5066376 A JP 5066376A JP 5066376 A JP5066376 A JP 5066376A JP S52133796 A JPS52133796 A JP S52133796A
Authority
JP
Japan
Prior art keywords
smoke
fire alarm
points
detecting points
detecing
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.)
Pending
Application number
JP5066376A
Other languages
Japanese (ja)
Inventor
Tsunehiko Araki
Yoshihiko Okuda
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP5066376A priority Critical patent/JPS52133796A/en
Publication of JPS52133796A publication Critical patent/JPS52133796A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fire-Detection Mechanisms (AREA)

Abstract

PURPOSE: To obtain the moving speed of smoke by obtaining the distance between smoke detecing points from the delay time in operation of first, second smoke detecting points as well as to detect the density of smoke from the smoke detecting points.
COPYRIGHT: (C)1977,JPO&Japio
JP5066376A 1976-04-30 1976-04-30 Fire alarm Pending JPS52133796A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5066376A JPS52133796A (en) 1976-04-30 1976-04-30 Fire alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5066376A JPS52133796A (en) 1976-04-30 1976-04-30 Fire alarm

Publications (1)

Publication Number Publication Date
JPS52133796A true JPS52133796A (en) 1977-11-09

Family

ID=12865182

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5066376A Pending JPS52133796A (en) 1976-04-30 1976-04-30 Fire alarm

Country Status (1)

Country Link
JP (1) JPS52133796A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63211496A (en) * 1987-02-27 1988-09-02 ホーチキ株式会社 Fire detector apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63211496A (en) * 1987-02-27 1988-09-02 ホーチキ株式会社 Fire detector apparatus

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