JPS6189155U - - Google Patents

Info

Publication number
JPS6189155U
JPS6189155U JP17466584U JP17466584U JPS6189155U JP S6189155 U JPS6189155 U JP S6189155U JP 17466584 U JP17466584 U JP 17466584U JP 17466584 U JP17466584 U JP 17466584U JP S6189155 U JPS6189155 U JP S6189155U
Authority
JP
Japan
Prior art keywords
gas
gas sensor
temperature range
heater
metal oxide
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
JP17466584U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP17466584U priority Critical patent/JPS6189155U/ja
Publication of JPS6189155U publication Critical patent/JPS6189155U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)

Description

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

第１図ａは実施例の特定ガス検出装置のブロツ
ク図で、第１図ｂ第１図ｃはその要部の回路図で
有る。第２図は実施例の動作の波形図、第３図は
他の実施例のブロツク図である。 ２…電池電源、４…タイマ要素、Ｍ，Ｍ…パル
ス幅可変単安定マルチバイブレータ、Ｔｒ１，Ｔ
ｒ２，Ｔｒ３…トランジスタ、２０，３０…ガス
センサ、２２，３２…金属酸化物半導体、２４，
２６，３４…ヒータ。 FIG. 1a is a block diagram of a specific gas detection device according to an embodiment, and FIG. 1b and FIG. 1c are circuit diagrams of the main parts thereof. FIG. 2 is a waveform diagram of the operation of the embodiment, and FIG. 3 is a block diagram of another embodiment. 2...Battery power supply, 4...Timer element, M, M...Pulse width variable monostable multivibrator, Tr 1 , T
r2 , Tr3 ...transistor, 20,30...gas sensor, 22,32...metal oxide semiconductor, 24,
26, 34...Heater.

Claims (1)

【実用新案登録請求の範囲】 電池電源と、 ガスにより抵抗値が変化する金属酸化物半導体
と、この半導体を加熱するためのヒータとを有す
るガスセンサと、 ガスセンサのヒータを電池電源に接続するため
のスイツチング要素と、 ガスセンサ中の金属酸化物半導体の抵抗値から
特定のガスを検出するためのガス検出回路と、 前記スイツチング要素のオン期間のデユーテイ
比を周期的に変化させて、ガスセンサを高温域と
低温域とに周期的に加熱するためのデユーテイ比
制御信号と、ガスセンサが低温域に加熱されてい
る期間内に前記ガス検出回路を動作させるための
サンプリング信号を発するタイマ要素、 とを有する特定ガス検出装置。[Scope of Claim for Utility Model Registration] A gas sensor having a battery power source, a metal oxide semiconductor whose resistance value changes depending on gas, and a heater for heating the semiconductor, and a gas sensor for connecting the heater of the gas sensor to the battery power source. A switching element, a gas detection circuit for detecting a specific gas from the resistance value of a metal oxide semiconductor in the gas sensor, and a duty ratio of an on period of the switching element is periodically changed to adjust the gas sensor to a high temperature range. a duty ratio control signal for periodically heating the gas to a low temperature range; and a timer element for generating a sampling signal for operating the gas detection circuit during a period in which the gas sensor is heated to a low temperature range. Detection device.
JP17466584U 1984-11-16 1984-11-16 Pending JPS6189155U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17466584U JPS6189155U (en) 1984-11-16 1984-11-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17466584U JPS6189155U (en) 1984-11-16 1984-11-16

Publications (1)

Publication Number Publication Date
JPS6189155U true JPS6189155U (en) 1986-06-10

Family

ID=30732284

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17466584U Pending JPS6189155U (en) 1984-11-16 1984-11-16

Country Status (1)

Country Link
JP (1) JPS6189155U (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5515080A (en) * 1978-07-20 1980-02-01 Nichicon Capacitor Ltd Applying unit of gas-sensitive element
JPS57163859A (en) * 1982-03-01 1982-10-08 Fuigaro Giken Kk Gas detector
JPS57184961A (en) * 1981-05-08 1982-11-13 Matsushita Electric Ind Co Ltd Detecting device
JPS6070344A (en) * 1983-09-28 1985-04-22 Nohmi Bosai Kogyo Co Ltd Gas leak detecting apparatus
JPS6070345A (en) * 1983-09-28 1985-04-22 Nohmi Bosai Kogyo Co Ltd Gas leak detecting apparatus
JPS60203845A (en) * 1984-03-29 1985-10-15 Nohmi Bosai Kogyo Co Ltd Alarming device of gas leakage
JPS60231150A (en) * 1984-04-28 1985-11-16 Mitsubishi Electric Corp smoke/gas detector

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5515080A (en) * 1978-07-20 1980-02-01 Nichicon Capacitor Ltd Applying unit of gas-sensitive element
JPS57184961A (en) * 1981-05-08 1982-11-13 Matsushita Electric Ind Co Ltd Detecting device
JPS57163859A (en) * 1982-03-01 1982-10-08 Fuigaro Giken Kk Gas detector
JPS6070344A (en) * 1983-09-28 1985-04-22 Nohmi Bosai Kogyo Co Ltd Gas leak detecting apparatus
JPS6070345A (en) * 1983-09-28 1985-04-22 Nohmi Bosai Kogyo Co Ltd Gas leak detecting apparatus
JPS60203845A (en) * 1984-03-29 1985-10-15 Nohmi Bosai Kogyo Co Ltd Alarming device of gas leakage
JPS60231150A (en) * 1984-04-28 1985-11-16 Mitsubishi Electric Corp smoke/gas detector

Similar Documents

Publication Publication Date Title
JPS6189155U (en)
JPS6189156U (en)
JPH0327345U (en)
JPS62165554U (en)
JPS61102953U (en)
JPS6134469U (en) Oxygen sensor heater control device
JPS624091U (en)
JPS6344128U (en)
JPS6155713U (en)
JPS61112261U (en)
JPS62165553U (en)
JPH0252046U (en)
JPS62101194U (en)
JPS62123671U (en)
JPS6275479U (en)
JPS6232499U (en)
JPS62123516U (en)
JPS6021224U (en) Gas cooker control device
JPH0328691U (en)
JPS61163971U (en)
JPS6336427U (en)
JPS62199649U (en)
JPS61142253U (en)
JPS6214936U (en)
JPS61112263U (en)