JPS62165554U - - Google Patents
Info
- Publication number
- JPS62165554U JPS62165554U JP5415486U JP5415486U JPS62165554U JP S62165554 U JPS62165554 U JP S62165554U JP 5415486 U JP5415486 U JP 5415486U JP 5415486 U JP5415486 U JP 5415486U JP S62165554 U JPS62165554 U JP S62165554U
- Authority
- JP
- Japan
- Prior art keywords
- temperature range
- gas
- output
- detection means
- gas sensor
- 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
Links
- 238000001514 detection method Methods 0.000 claims 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims 2
- 229910002091 carbon monoxide Inorganic materials 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 claims 2
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Non-Adjustable Resistors (AREA)
Description
第１図は、実施例の回路図、第２図はその波形
図、第３図、第４図は実施例に用いるガスセンサ
の特性図である。
図に於いて、２…ガスセンサ、４，６…ヒータ
兼用電極、８…電源、１０…タイマ、１２…ヒー
タ電源、３８，４８，６０…比較回路、４０，６
２…Ｄ．Ｆ．Ｆ．５４…ＲＳＴフリツプ・フロツ
プ。
FIG. 1 is a circuit diagram of the embodiment, FIG. 2 is a waveform diagram thereof, and FIGS. 3 and 4 are characteristic diagrams of the gas sensor used in the embodiment. In the figure, 2... Gas sensor, 4, 6... Heater electrode, 8... Power supply, 10... Timer, 12... Heater power supply, 38, 48, 60... Comparison circuit, 40, 6
2...D. F. F. 54...RST flip-flop.
Claims (1)
を用いたガスセンサの加熱温度を、高温域と低温
域とに交互に周期的に変化させるようにしたガス
検出装置において、 高温域への移行直後に生じるガスセンサの出力
のピークを検出するためのピーク検出手段と、 ピーク検出手段の出力により加熱周期を変更し
て、低温域への保持時間を延長するための手段と
、 延長された低温域における、ガスセンサの出力
から一酸化炭素を検出するための一酸化炭素検出
手段と、 高温域における、ガスセンサの出力から可燃性
ガスを検出するための可燃性ガス検出手段、 とを設けたことを特徴とするガス検出装置。[Scope of Utility Model Registration Claim] In a gas detection device in which the heating temperature of a gas sensor using a metal oxide semiconductor whose resistance value changes depending on gas is alternately and periodically changed between a high temperature range and a low temperature range, peak detection means for detecting a peak in the output of the gas sensor that occurs immediately after transition to the high temperature range; means for changing the heating cycle based on the output of the peak detection means to extend the holding time to the low temperature range; Carbon monoxide detection means for detecting carbon monoxide from the output of the gas sensor in an extended low temperature range; and combustible gas detection means for detecting flammable gas from the output of the gas sensor in the high temperature range. A gas detection device characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5415486U JPH0532761Y2 (en) | 1986-04-10 | 1986-04-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5415486U JPH0532761Y2 (en) | 1986-04-10 | 1986-04-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62165554U true JPS62165554U (en) | 1987-10-21 |
| JPH0532761Y2 JPH0532761Y2 (en) | 1993-08-20 |
Family
ID=30880886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5415486U Expired - Lifetime JPH0532761Y2 (en) | 1986-04-10 | 1986-04-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0532761Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009210344A (en) * | 2008-03-03 | 2009-09-17 | Osaka Gas Co Ltd | Gas detection device and gas detection method |
| JP2016145748A (en) * | 2015-02-06 | 2016-08-12 | 日本写真印刷株式会社 | Gas detector |
-
1986
- 1986-04-10 JP JP5415486U patent/JPH0532761Y2/ja not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009210344A (en) * | 2008-03-03 | 2009-09-17 | Osaka Gas Co Ltd | Gas detection device and gas detection method |
| JP2016145748A (en) * | 2015-02-06 | 2016-08-12 | 日本写真印刷株式会社 | Gas detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0532761Y2 (en) | 1993-08-20 |
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