JPS5858687U - fire detector - Google Patents

fire detector

Info

Publication number
JPS5858687U
JPS5858687U JP15227081U JP15227081U JPS5858687U JP S5858687 U JPS5858687 U JP S5858687U JP 15227081 U JP15227081 U JP 15227081U JP 15227081 U JP15227081 U JP 15227081U JP S5858687 U JPS5858687 U JP S5858687U
Authority
JP
Japan
Prior art keywords
value
analog
digital
output
fire
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
JP15227081U
Other languages
Japanese (ja)
Other versions
JPS6022476Y2 (en
Inventor
木村　徹男
Original Assignee
ニツタン株式会社
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 ニツタン株式会社 filed Critical ニツタン株式会社
Priority to JP1981152270U priority Critical patent/JPS6022476Y2/en
Publication of JPS5858687U publication Critical patent/JPS5858687U/en
Application granted granted Critical
Publication of JPS6022476Y2 publication Critical patent/JPS6022476Y2/en
Expired legal-status Critical Current

Links

Landscapes

  • Fire-Detection Mechanisms (AREA)
  • Alarm Systems (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

一部１図は従来の火災検出器の一例を示す一部回路図を
含むブロック図、第２１図は上記従来例におけるアナロ
グ入力値とディジタル出力値との関係を示す図、第３図
は本発明の一実施例を示す一部回路図を含むブロック図
、第４図は上記実施例におけるアナログ入力とディジタ
ル出力との関係を示す図である。 図において、１・・・比較暮、２゛・・・カウンタ、３
・・・クロックパルス発生器、４・・・アンドゲート、
Ｒｅ２Ｒ，Ｒａ、　Ｒｂ・・・抵抗、Ｅ、・・・電源電
圧。Part 1 is a block diagram including a partial circuit diagram showing an example of a conventional fire detector, Fig. 21 is a diagram showing the relationship between analog input values and digital output values in the above conventional example, and Fig. 3 is the main FIG. 4 is a block diagram including a partial circuit diagram showing one embodiment of the invention, and is a diagram showing the relationship between analog input and digital output in the above embodiment. In the figure, 1...comparison counter, 2゛...counter, 3
...Clock pulse generator, 4...And gate,
Re2R, Ra, Rb...Resistance, E,...Power supply voltage.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 煙濃度等に対応した火災センサーのアナログ出力をデジ
タル信号に変換出力する火災検出器において、上記火災
センサーの通常の出力値の変動範囲以下の値をデジタル
値の０″に対応させ、危険状態に対応する火災センサー
の出力値を最高のデジタル値に対応させたアナログ−デ
ジタル変換器と、該アナログ−デジタル変換器の出力が
“０゛であるとき故障検出信号を出す故障検出器とを備
えたことを特徴とする火災検出器。In a fire detector that converts the analog output of a fire sensor corresponding to smoke concentration, etc. into a digital signal, a value below the normal output value fluctuation range of the fire sensor is made to correspond to a digital value of 0'', and a dangerous state is detected. Equipped with an analog-to-digital converter that makes the output value of a corresponding fire sensor correspond to the highest digital value, and a failure detector that outputs a failure detection signal when the output of the analog-to-digital converter is "0". A fire detector characterized by:
JP1981152270U 1981-10-15 1981-10-15 fire detector Expired JPS6022476Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1981152270U JPS6022476Y2 (en) 1981-10-15 1981-10-15 fire detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1981152270U JPS6022476Y2 (en) 1981-10-15 1981-10-15 fire detector

Publications (2)

Publication Number Publication Date
JPS5858687U true JPS5858687U (en) 1983-04-20
JPS6022476Y2 JPS6022476Y2 (en) 1985-07-03

Family

ID=29944928

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1981152270U Expired JPS6022476Y2 (en) 1981-10-15 1981-10-15 fire detector

Country Status (1)

Country Link
JP (1) JPS6022476Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63220396A (en) * 1987-03-09 1988-09-13 能美防災株式会社 Analog type fire sensor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55131736A (en) * 1979-03-30 1980-10-13 Sanyo Electric Co Ltd Temperature measuring device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55131736A (en) * 1979-03-30 1980-10-13 Sanyo Electric Co Ltd Temperature measuring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63220396A (en) * 1987-03-09 1988-09-13 能美防災株式会社 Analog type fire sensor

Also Published As

Publication number Publication date
JPS6022476Y2 (en) 1985-07-03

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