JPS5923891U - gas leak alarm - Google Patents
gas leak alarmInfo
- Publication number
- JPS5923891U JPS5923891U JP11835082U JP11835082U JPS5923891U JP S5923891 U JPS5923891 U JP S5923891U JP 11835082 U JP11835082 U JP 11835082U JP 11835082 U JP11835082 U JP 11835082U JP S5923891 U JPS5923891 U JP S5923891U
- Authority
- JP
- Japan
- Prior art keywords
- oscillation
- gas leak
- signal
- gas
- comparison circuit
- 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
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Emergency Alarm Devices (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
第１図は本考案に用いられるガスセンサーのガス感応特
性を示すグラフ、第２図は本考案の一実施例を示すガス
漏れ警報器のブロック回路図、第３図は第２図の回路に
おける各部の波形区、第４図はガス濃度と警報遅延時間
との関係を示す図である。
１・・・ガスセンサー、２・・・コンデンサ、３・・・
発振回路、４・・・波形整形回路、５，６・・・周期比
較器、−１・・・カウンタ、８・・・警報駆動回路、９
・・・ランプ、１０・・・ブザー。Fig. 1 is a graph showing the gas sensitivity characteristics of the gas sensor used in the present invention, Fig. 2 is a block circuit diagram of a gas leak alarm showing an embodiment of the present invention, and Fig. 3 is a graph showing the gas sensitivity characteristics of the gas sensor used in the present invention. FIG. 4 is a diagram showing the relationship between gas concentration and alarm delay time. 1... Gas sensor, 2... Capacitor, 3...
Oscillation circuit, 4... Waveform shaping circuit, 5, 6... Period comparator, -1... Counter, 8... Alarm drive circuit, 9
...Lamp, 10...Buzzer.
Claims (1)
高くなるガスセンサーと、該ガスセンサーの電気抵抗面
の変化により発振周波数が変化する発振回路と、該発□
振回路の発振周期が設定値以下になると信号を出力する
ガス漏れ検出用周期比較回路と、該ガス漏れ検出用比較
回路からの出力信号により前記発振回路の出力パルスを
設定された数迄カウントし、カウント終了後、信号を出
力するカウントと、前記発振回路の発振周期が設定値以
上になると信号を出力する故障検出用周期比較回路と、
該故障検出用周期比較回路または前記カウンタからの出
力信号により警報を行なう警報手段とから成ることを特
徴とするガス漏れ警報器。A gas sensor whose electrical resistance decreases when it comes into contact with the gas to be detected and increases when it fails; an oscillation circuit whose oscillation frequency changes due to changes in the electrical resistance of the gas sensor;
A period comparison circuit for gas leak detection outputs a signal when the oscillation cycle of the oscillation circuit becomes less than a set value, and the output pulses of the oscillation circuit are counted up to a set number by the output signal from the comparison circuit for gas leak detection. , a count that outputs a signal after the count ends, and a period comparison circuit for failure detection that outputs a signal when the oscillation period of the oscillation circuit exceeds a set value;
A gas leak alarm comprising: an alarm means for issuing an alarm based on the output signal from the failure detection cycle comparison circuit or the counter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11835082U JPS5923891U (en) | 1982-08-05 | 1982-08-05 | gas leak alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11835082U JPS5923891U (en) | 1982-08-05 | 1982-08-05 | gas leak alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5923891U true JPS5923891U (en) | 1984-02-14 |
Family
ID=30272058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11835082U Pending JPS5923891U (en) | 1982-08-05 | 1982-08-05 | gas leak alarm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5923891U (en) |
-
1982
- 1982-08-05 JP JP11835082U patent/JPS5923891U/en active Pending
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